diff options
Diffstat (limited to 'tools/lib')
80 files changed, 5145 insertions, 594 deletions
diff --git a/tools/lib/lk/Makefile b/tools/lib/api/Makefile index 3dba0a4aebb..ce00f7ee645 100644 --- a/tools/lib/lk/Makefile +++ b/tools/lib/api/Makefile @@ -1,4 +1,5 @@ include ../../scripts/Makefile.include +include ../../perf/config/utilities.mak # QUIET_CLEAN CC = $(CROSS_COMPILE)gcc AR = $(CROSS_COMPILE)ar @@ -7,11 +8,13 @@ AR = $(CROSS_COMPILE)ar LIB_H= LIB_OBJS= -LIB_H += debugfs.h +LIB_H += fs/debugfs.h +LIB_H += fs/fs.h -LIB_OBJS += $(OUTPUT)debugfs.o +LIB_OBJS += $(OUTPUT)fs/debugfs.o +LIB_OBJS += $(OUTPUT)fs/fs.o -LIBFILE = liblk.a +LIBFILE = libapikfs.a CFLAGS = -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) -fPIC EXTLIBS = -lelf -lpthread -lrt -lm @@ -25,14 +28,17 @@ $(LIBFILE): $(LIB_OBJS) $(LIB_OBJS): $(LIB_H) -$(OUTPUT)%.o: %.c +libapi_dirs: + $(QUIET_MKDIR)mkdir -p $(OUTPUT)fs/ + +$(OUTPUT)%.o: %.c libapi_dirs $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $< -$(OUTPUT)%.s: %.c +$(OUTPUT)%.s: %.c libapi_dirs $(QUIET_CC)$(CC) -S $(ALL_CFLAGS) $< -$(OUTPUT)%.o: %.S +$(OUTPUT)%.o: %.S libapi_dirs $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $< clean: - $(RM) $(LIB_OBJS) $(LIBFILE) + $(call QUIET_CLEAN, libapi) $(RM) $(LIB_OBJS) $(LIBFILE) .PHONY: clean diff --git a/tools/lib/lk/debugfs.c b/tools/lib/api/fs/debugfs.c index 099e7cd022e..a74fba6d774 100644 --- a/tools/lib/lk/debugfs.c +++ b/tools/lib/api/fs/debugfs.c @@ -5,7 +5,6 @@ #include <stdbool.h> #include <sys/vfs.h> #include <sys/mount.h> -#include <linux/magic.h> #include <linux/kernel.h> #include "debugfs.h" @@ -13,8 +12,8 @@ char debugfs_mountpoint[PATH_MAX + 1] = "/sys/kernel/debug"; static const char * const debugfs_known_mountpoints[] = { - "/sys/kernel/debug/", - "/debug/", + "/sys/kernel/debug", + "/debug", 0, }; diff --git a/tools/lib/lk/debugfs.h b/tools/lib/api/fs/debugfs.h index 935c59bdb44..f19d3df9609 100644 --- a/tools/lib/lk/debugfs.h +++ b/tools/lib/api/fs/debugfs.h @@ -1,5 +1,5 @@ -#ifndef __LK_DEBUGFS_H__ -#define __LK_DEBUGFS_H__ +#ifndef __API_DEBUGFS_H__ +#define __API_DEBUGFS_H__ #define _STR(x) #x #define STR(x) _STR(x) @@ -26,4 +26,4 @@ char *debugfs_mount(const char *mountpoint); extern char debugfs_mountpoint[]; -#endif /* __LK_DEBUGFS_H__ */ +#endif /* __API_DEBUGFS_H__ */ diff --git a/tools/lib/api/fs/fs.c b/tools/lib/api/fs/fs.c new file mode 100644 index 00000000000..c1b49c36a95 --- /dev/null +++ b/tools/lib/api/fs/fs.c @@ -0,0 +1,165 @@ +/* TODO merge/factor in debugfs.c here */ + +#include <ctype.h> +#include <errno.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/vfs.h> + +#include "debugfs.h" +#include "fs.h" + +static const char * const sysfs__fs_known_mountpoints[] = { + "/sys", + 0, +}; + +static const char * const procfs__known_mountpoints[] = { + "/proc", + 0, +}; + +struct fs { + const char *name; + const char * const *mounts; + char path[PATH_MAX + 1]; + bool found; + long magic; +}; + +enum { + FS__SYSFS = 0, + FS__PROCFS = 1, +}; + +static struct fs fs__entries[] = { + [FS__SYSFS] = { + .name = "sysfs", + .mounts = sysfs__fs_known_mountpoints, + .magic = SYSFS_MAGIC, + }, + [FS__PROCFS] = { + .name = "proc", + .mounts = procfs__known_mountpoints, + .magic = PROC_SUPER_MAGIC, + }, +}; + +static bool fs__read_mounts(struct fs *fs) +{ + bool found = false; + char type[100]; + FILE *fp; + + fp = fopen("/proc/mounts", "r"); + if (fp == NULL) + return NULL; + + while (!found && + fscanf(fp, "%*s %" STR(PATH_MAX) "s %99s %*s %*d %*d\n", + fs->path, type) == 2) { + + if (strcmp(type, fs->name) == 0) + found = true; + } + + fclose(fp); + return fs->found = found; +} + +static int fs__valid_mount(const char *fs, long magic) +{ + struct statfs st_fs; + + if (statfs(fs, &st_fs) < 0) + return -ENOENT; + else if (st_fs.f_type != magic) + return -ENOENT; + + return 0; +} + +static bool fs__check_mounts(struct fs *fs) +{ + const char * const *ptr; + + ptr = fs->mounts; + while (*ptr) { + if (fs__valid_mount(*ptr, fs->magic) == 0) { + fs->found = true; + strcpy(fs->path, *ptr); + return true; + } + ptr++; + } + + return false; +} + +static void mem_toupper(char *f, size_t len) +{ + while (len) { + *f = toupper(*f); + f++; + len--; + } +} + +/* + * Check for "NAME_PATH" environment variable to override fs location (for + * testing). This matches the recommendation in Documentation/sysfs-rules.txt + * for SYSFS_PATH. + */ +static bool fs__env_override(struct fs *fs) +{ + char *override_path; + size_t name_len = strlen(fs->name); + /* name + "_PATH" + '\0' */ + char upper_name[name_len + 5 + 1]; + memcpy(upper_name, fs->name, name_len); + mem_toupper(upper_name, name_len); + strcpy(&upper_name[name_len], "_PATH"); + + override_path = getenv(upper_name); + if (!override_path) + return false; + + fs->found = true; + strncpy(fs->path, override_path, sizeof(fs->path)); + return true; +} + +static const char *fs__get_mountpoint(struct fs *fs) +{ + if (fs__env_override(fs)) + return fs->path; + + if (fs__check_mounts(fs)) + return fs->path; + + if (fs__read_mounts(fs)) + return fs->path; + + return NULL; +} + +static const char *fs__mountpoint(int idx) +{ + struct fs *fs = &fs__entries[idx]; + + if (fs->found) + return (const char *)fs->path; + + return fs__get_mountpoint(fs); +} + +#define FS__MOUNTPOINT(name, idx) \ +const char *name##__mountpoint(void) \ +{ \ + return fs__mountpoint(idx); \ +} + +FS__MOUNTPOINT(sysfs, FS__SYSFS); +FS__MOUNTPOINT(procfs, FS__PROCFS); diff --git a/tools/lib/api/fs/fs.h b/tools/lib/api/fs/fs.h new file mode 100644 index 00000000000..cb7049551f3 --- /dev/null +++ b/tools/lib/api/fs/fs.h @@ -0,0 +1,14 @@ +#ifndef __API_FS__ +#define __API_FS__ + +#ifndef SYSFS_MAGIC +#define SYSFS_MAGIC 0x62656572 +#endif + +#ifndef PROC_SUPER_MAGIC +#define PROC_SUPER_MAGIC 0x9fa0 +#endif + +const char *sysfs__mountpoint(void); +const char *procfs__mountpoint(void); +#endif /* __API_FS__ */ diff --git a/tools/lib/lockdep/Makefile b/tools/lib/lockdep/Makefile new file mode 100644 index 00000000000..52f9279c6c1 --- /dev/null +++ b/tools/lib/lockdep/Makefile @@ -0,0 +1,243 @@ +# file format version +FILE_VERSION = 1 + +LIBLOCKDEP_VERSION=$(shell make --no-print-directory -sC ../../.. kernelversion) + +# Makefiles suck: This macro sets a default value of $(2) for the +# variable named by $(1), unless the variable has been set by +# environment or command line. This is necessary for CC and AR +# because make sets default values, so the simpler ?= approach +# won't work as expected. +define allow-override + $(if $(or $(findstring environment,$(origin $(1))),\ + $(findstring command line,$(origin $(1)))),,\ + $(eval $(1) = $(2))) +endef + +# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix. +$(call allow-override,CC,$(CROSS_COMPILE)gcc) +$(call allow-override,AR,$(CROSS_COMPILE)ar) + +INSTALL = install + +# Use DESTDIR for installing into a different root directory. +# This is useful for building a package. The program will be +# installed in this directory as if it was the root directory. +# Then the build tool can move it later. +DESTDIR ?= +DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' + +prefix ?= /usr/local +libdir_relative = lib +libdir = $(prefix)/$(libdir_relative) +bindir_relative = bin +bindir = $(prefix)/$(bindir_relative) + +export DESTDIR DESTDIR_SQ INSTALL + +# copy a bit from Linux kbuild + +ifeq ("$(origin V)", "command line") + VERBOSE = $(V) +endif +ifndef VERBOSE + VERBOSE = 0 +endif + +ifeq ("$(origin O)", "command line") + BUILD_OUTPUT := $(O) +endif + +ifeq ($(BUILD_SRC),) +ifneq ($(BUILD_OUTPUT),) + +define build_output + $(if $(VERBOSE:1=),@)$(MAKE) -C $(BUILD_OUTPUT) \ + BUILD_SRC=$(CURDIR) -f $(CURDIR)/Makefile $1 +endef + +saved-output := $(BUILD_OUTPUT) +BUILD_OUTPUT := $(shell cd $(BUILD_OUTPUT) && /bin/pwd) +$(if $(BUILD_OUTPUT),, \ + $(error output directory "$(saved-output)" does not exist)) + +all: sub-make + +gui: force + $(call build_output, all_cmd) + +$(filter-out gui,$(MAKECMDGOALS)): sub-make + +sub-make: force + $(call build_output, $(MAKECMDGOALS)) + + +# Leave processing to above invocation of make +skip-makefile := 1 + +endif # BUILD_OUTPUT +endif # BUILD_SRC + +# We process the rest of the Makefile if this is the final invocation of make +ifeq ($(skip-makefile),) + +srctree := $(realpath $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR))) +objtree := $(realpath $(CURDIR)) +src := $(srctree) +obj := $(objtree) + +export prefix libdir bindir src obj + +# Shell quotes +libdir_SQ = $(subst ','\'',$(libdir)) +bindir_SQ = $(subst ','\'',$(bindir)) + +LIB_FILE = liblockdep.a liblockdep.so.$(LIBLOCKDEP_VERSION) +BIN_FILE = lockdep + +CONFIG_INCLUDES = +CONFIG_LIBS = +CONFIG_FLAGS = + +OBJ = $@ +N = + +export Q VERBOSE + +INCLUDES = -I. -I/usr/local/include -I./uinclude -I./include -I../../include $(CONFIG_INCLUDES) + +# Set compile option CFLAGS if not set elsewhere +CFLAGS ?= -g -DCONFIG_LOCKDEP -DCONFIG_STACKTRACE -DCONFIG_PROVE_LOCKING -DBITS_PER_LONG=__WORDSIZE -DLIBLOCKDEP_VERSION='"$(LIBLOCKDEP_VERSION)"' -rdynamic -O0 -g + +override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ) + +ifeq ($(VERBOSE),1) + Q = + print_compile = + print_app_build = + print_fpic_compile = + print_shared_lib_compile = + print_install = +else + Q = @ + print_compile = echo ' CC '$(OBJ); + print_app_build = echo ' BUILD '$(OBJ); + print_fpic_compile = echo ' CC FPIC '$(OBJ); + print_shared_lib_compile = echo ' BUILD SHARED LIB '$(OBJ); + print_static_lib_build = echo ' BUILD STATIC LIB '$(OBJ); + print_install = echo ' INSTALL '$1' to $(DESTDIR_SQ)$2'; +endif + +do_fpic_compile = \ + ($(print_fpic_compile) \ + $(CC) -c $(CFLAGS) $(EXT) -fPIC $< -o $@) + +do_app_build = \ + ($(print_app_build) \ + $(CC) $^ -rdynamic -o $@ $(CONFIG_LIBS) $(LIBS)) + +do_compile_shared_library = \ + ($(print_shared_lib_compile) \ + $(CC) --shared $^ -o $@ -lpthread -ldl -Wl,-soname='"$@"';$(shell ln -s $@ liblockdep.so)) + +do_build_static_lib = \ + ($(print_static_lib_build) \ + $(RM) $@; $(AR) rcs $@ $^) + + +define do_compile + $(print_compile) \ + $(CC) -c $(CFLAGS) $(EXT) $< -o $(obj)/$@; +endef + +$(obj)/%.o: $(src)/%.c + $(Q)$(call do_compile) + +%.o: $(src)/%.c + $(Q)$(call do_compile) + +PEVENT_LIB_OBJS = common.o lockdep.o preload.o rbtree.o + +ALL_OBJS = $(PEVENT_LIB_OBJS) + +CMD_TARGETS = $(LIB_FILE) + +TARGETS = $(CMD_TARGETS) + + +all: all_cmd + +all_cmd: $(CMD_TARGETS) + +liblockdep.so.$(LIBLOCKDEP_VERSION): $(PEVENT_LIB_OBJS) + $(Q)$(do_compile_shared_library) + +liblockdep.a: $(PEVENT_LIB_OBJS) + $(Q)$(do_build_static_lib) + +$(PEVENT_LIB_OBJS): %.o: $(src)/%.c + $(Q)$(do_fpic_compile) + +## make deps + +all_objs := $(sort $(ALL_OBJS)) +all_deps := $(all_objs:%.o=.%.d) + +# let .d file also depends on the source and header files +define check_deps + @set -e; $(RM) $@; \ + $(CC) -MM $(CFLAGS) $< > $@.$$$$; \ + sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \ + $(RM) $@.$$$$ +endef + +$(all_deps): .%.d: $(src)/%.c + $(Q)$(call check_deps) + +$(all_objs) : %.o : .%.d + +dep_includes := $(wildcard $(all_deps)) + +ifneq ($(dep_includes),) + include $(dep_includes) +endif + +### Detect environment changes +TRACK_CFLAGS = $(subst ','\'',$(CFLAGS)):$(ARCH):$(CROSS_COMPILE) + +tags: force + $(RM) tags + find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \ + --regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/' + +TAGS: force + $(RM) TAGS + find . -name '*.[ch]' | xargs etags \ + --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/' + +define do_install + $(print_install) \ + if [ ! -d '$(DESTDIR_SQ)$2' ]; then \ + $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \ + fi; \ + $(INSTALL) $1 '$(DESTDIR_SQ)$2' +endef + +install_lib: all_cmd + $(Q)$(call do_install,$(LIB_FILE),$(libdir_SQ)) + $(Q)$(call do_install,$(BIN_FILE),$(bindir_SQ)) + +install: install_lib + +clean: + $(RM) *.o *~ $(TARGETS) *.a *liblockdep*.so* $(VERSION_FILES) .*.d + $(RM) tags TAGS + +endif # skip-makefile + +PHONY += force +force: + +# Declare the contents of the .PHONY variable as phony. We keep that +# information in a variable so we can use it in if_changed and friends. +.PHONY: $(PHONY) diff --git a/tools/lib/lockdep/common.c b/tools/lib/lockdep/common.c new file mode 100644 index 00000000000..8ef602f18a3 --- /dev/null +++ b/tools/lib/lockdep/common.c @@ -0,0 +1,33 @@ +#include <stddef.h> +#include <stdbool.h> +#include <linux/compiler.h> +#include <linux/lockdep.h> +#include <unistd.h> +#include <sys/syscall.h> + +static __thread struct task_struct current_obj; + +/* lockdep wants these */ +bool debug_locks = true; +bool debug_locks_silent; + +__attribute__((constructor)) static void liblockdep_init(void) +{ + lockdep_init(); +} + +__attribute__((destructor)) static void liblockdep_exit(void) +{ + debug_check_no_locks_held(¤t_obj); +} + +struct task_struct *__curr(void) +{ + if (current_obj.pid == 0) { + /* Makes lockdep output pretty */ + prctl(PR_GET_NAME, current_obj.comm); + current_obj.pid = syscall(__NR_gettid); + } + + return ¤t_obj; +} diff --git a/tools/lib/lockdep/include/liblockdep/common.h b/tools/lib/lockdep/include/liblockdep/common.h new file mode 100644 index 00000000000..0bda630027c --- /dev/null +++ b/tools/lib/lockdep/include/liblockdep/common.h @@ -0,0 +1,50 @@ +#ifndef _LIBLOCKDEP_COMMON_H +#define _LIBLOCKDEP_COMMON_H + +#include <pthread.h> + +#define NR_LOCKDEP_CACHING_CLASSES 2 +#define MAX_LOCKDEP_SUBCLASSES 8UL + +#ifndef CALLER_ADDR0 +#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) +#endif + +#ifndef _RET_IP_ +#define _RET_IP_ CALLER_ADDR0 +#endif + +#ifndef _THIS_IP_ +#define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; }) +#endif + +struct lockdep_subclass_key { + char __one_byte; +}; + +struct lock_class_key { + struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES]; +}; + +struct lockdep_map { + struct lock_class_key *key; + struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES]; + const char *name; +#ifdef CONFIG_LOCK_STAT + int cpu; + unsigned long ip; +#endif +}; + +void lockdep_init_map(struct lockdep_map *lock, const char *name, + struct lock_class_key *key, int subclass); +void lock_acquire(struct lockdep_map *lock, unsigned int subclass, + int trylock, int read, int check, + struct lockdep_map *nest_lock, unsigned long ip); +void lock_release(struct lockdep_map *lock, int nested, + unsigned long ip); + +#define STATIC_LOCKDEP_MAP_INIT(_name, _key) \ + { .name = (_name), .key = (void *)(_key), } + +#endif diff --git a/tools/lib/lockdep/include/liblockdep/mutex.h b/tools/lib/lockdep/include/liblockdep/mutex.h new file mode 100644 index 00000000000..ee53a42818c --- /dev/null +++ b/tools/lib/lockdep/include/liblockdep/mutex.h @@ -0,0 +1,70 @@ +#ifndef _LIBLOCKDEP_MUTEX_H +#define _LIBLOCKDEP_MUTEX_H + +#include <pthread.h> +#include "common.h" + +struct liblockdep_pthread_mutex { + pthread_mutex_t mutex; + struct lockdep_map dep_map; +}; + +typedef struct liblockdep_pthread_mutex liblockdep_pthread_mutex_t; + +#define LIBLOCKDEP_PTHREAD_MUTEX_INITIALIZER(mtx) \ + (const struct liblockdep_pthread_mutex) { \ + .mutex = PTHREAD_MUTEX_INITIALIZER, \ + .dep_map = STATIC_LOCKDEP_MAP_INIT(#mtx, &((&(mtx))->dep_map)), \ +} + +static inline int __mutex_init(liblockdep_pthread_mutex_t *lock, + const char *name, + struct lock_class_key *key, + const pthread_mutexattr_t *__mutexattr) +{ + lockdep_init_map(&lock->dep_map, name, key, 0); + return pthread_mutex_init(&lock->mutex, __mutexattr); +} + +#define liblockdep_pthread_mutex_init(mutex, mutexattr) \ +({ \ + static struct lock_class_key __key; \ + \ + __mutex_init((mutex), #mutex, &__key, (mutexattr)); \ +}) + +static inline int liblockdep_pthread_mutex_lock(liblockdep_pthread_mutex_t *lock) +{ + lock_acquire(&lock->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_); + return pthread_mutex_lock(&lock->mutex); +} + +static inline int liblockdep_pthread_mutex_unlock(liblockdep_pthread_mutex_t *lock) +{ + lock_release(&lock->dep_map, 0, (unsigned long)_RET_IP_); + return pthread_mutex_unlock(&lock->mutex); +} + +static inline int liblockdep_pthread_mutex_trylock(liblockdep_pthread_mutex_t *lock) +{ + lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_); + return pthread_mutex_trylock(&lock->mutex) == 0 ? 1 : 0; +} + +static inline int liblockdep_pthread_mutex_destroy(liblockdep_pthread_mutex_t *lock) +{ + return pthread_mutex_destroy(&lock->mutex); +} + +#ifdef __USE_LIBLOCKDEP + +#define pthread_mutex_t liblockdep_pthread_mutex_t +#define pthread_mutex_init liblockdep_pthread_mutex_init +#define pthread_mutex_lock liblockdep_pthread_mutex_lock +#define pthread_mutex_unlock liblockdep_pthread_mutex_unlock +#define pthread_mutex_trylock liblockdep_pthread_mutex_trylock +#define pthread_mutex_destroy liblockdep_pthread_mutex_destroy + +#endif + +#endif diff --git a/tools/lib/lockdep/include/liblockdep/rwlock.h b/tools/lib/lockdep/include/liblockdep/rwlock.h new file mode 100644 index 00000000000..4ec03f86155 --- /dev/null +++ b/tools/lib/lockdep/include/liblockdep/rwlock.h @@ -0,0 +1,86 @@ +#ifndef _LIBLOCKDEP_RWLOCK_H +#define _LIBLOCKDEP_RWLOCK_H + +#include <pthread.h> +#include "common.h" + +struct liblockdep_pthread_rwlock { + pthread_rwlock_t rwlock; + struct lockdep_map dep_map; +}; + +typedef struct liblockdep_pthread_rwlock liblockdep_pthread_rwlock_t; + +#define LIBLOCKDEP_PTHREAD_RWLOCK_INITIALIZER(rwl) \ + (struct liblockdep_pthread_rwlock) { \ + .rwlock = PTHREAD_RWLOCK_INITIALIZER, \ + .dep_map = STATIC_LOCKDEP_MAP_INIT(#rwl, &((&(rwl))->dep_map)), \ +} + +static inline int __rwlock_init(liblockdep_pthread_rwlock_t *lock, + const char *name, + struct lock_class_key *key, + const pthread_rwlockattr_t *attr) +{ + lockdep_init_map(&lock->dep_map, name, key, 0); + + return pthread_rwlock_init(&lock->rwlock, attr); +} + +#define liblockdep_pthread_rwlock_init(lock, attr) \ +({ \ + static struct lock_class_key __key; \ + \ + __rwlock_init((lock), #lock, &__key, (attr)); \ +}) + +static inline int liblockdep_pthread_rwlock_rdlock(liblockdep_pthread_rwlock_t *lock) +{ + lock_acquire(&lock->dep_map, 0, 0, 2, 1, NULL, (unsigned long)_RET_IP_); + return pthread_rwlock_rdlock(&lock->rwlock); + +} + +static inline int liblockdep_pthread_rwlock_unlock(liblockdep_pthread_rwlock_t *lock) +{ + lock_release(&lock->dep_map, 0, (unsigned long)_RET_IP_); + return pthread_rwlock_unlock(&lock->rwlock); +} + +static inline int liblockdep_pthread_rwlock_wrlock(liblockdep_pthread_rwlock_t *lock) +{ + lock_acquire(&lock->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_); + return pthread_rwlock_wrlock(&lock->rwlock); +} + +static inline int liblockdep_pthread_rwlock_tryrdlock(liblockdep_pthread_rwlock_t *lock) +{ + lock_acquire(&lock->dep_map, 0, 1, 2, 1, NULL, (unsigned long)_RET_IP_); + return pthread_rwlock_tryrdlock(&lock->rwlock) == 0 ? 1 : 0; +} + +static inline int liblockdep_pthread_rwlock_trywlock(liblockdep_pthread_rwlock_t *lock) +{ + lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_); + return pthread_rwlock_trywlock(&lock->rwlock) == 0 ? 1 : 0; +} + +static inline int liblockdep_rwlock_destroy(liblockdep_pthread_rwlock_t *lock) +{ + return pthread_rwlock_destroy(&lock->rwlock); +} + +#ifdef __USE_LIBLOCKDEP + +#define pthread_rwlock_t liblockdep_pthread_rwlock_t +#define pthread_rwlock_init liblockdep_pthread_rwlock_init +#define pthread_rwlock_rdlock liblockdep_pthread_rwlock_rdlock +#define pthread_rwlock_unlock liblockdep_pthread_rwlock_unlock +#define pthread_rwlock_wrlock liblockdep_pthread_rwlock_wrlock +#define pthread_rwlock_tryrdlock liblockdep_pthread_rwlock_tryrdlock +#define pthread_rwlock_trywlock liblockdep_pthread_rwlock_trywlock +#define pthread_rwlock_destroy liblockdep_rwlock_destroy + +#endif + +#endif diff --git a/tools/lib/lockdep/lockdep b/tools/lib/lockdep/lockdep new file mode 100755 index 00000000000..49af9fe19f5 --- /dev/null +++ b/tools/lib/lockdep/lockdep @@ -0,0 +1,3 @@ +#!/bin/bash + +LD_PRELOAD="./liblockdep.so $LD_PRELOAD" "$@" diff --git a/tools/lib/lockdep/lockdep.c b/tools/lib/lockdep/lockdep.c new file mode 100644 index 00000000000..f42b7e9aa48 --- /dev/null +++ b/tools/lib/lockdep/lockdep.c @@ -0,0 +1,2 @@ +#include <linux/lockdep.h> +#include "../../../kernel/locking/lockdep.c" diff --git a/tools/lib/lockdep/lockdep_internals.h b/tools/lib/lockdep/lockdep_internals.h new file mode 100644 index 00000000000..29d0c954cc2 --- /dev/null +++ b/tools/lib/lockdep/lockdep_internals.h @@ -0,0 +1 @@ +#include "../../../kernel/locking/lockdep_internals.h" diff --git a/tools/lib/lockdep/lockdep_states.h b/tools/lib/lockdep/lockdep_states.h new file mode 100644 index 00000000000..248d235efda --- /dev/null +++ b/tools/lib/lockdep/lockdep_states.h @@ -0,0 +1 @@ +#include "../../../kernel/locking/lockdep_states.h" diff --git a/tools/lib/lockdep/preload.c b/tools/lib/lockdep/preload.c new file mode 100644 index 00000000000..6f803609e49 --- /dev/null +++ b/tools/lib/lockdep/preload.c @@ -0,0 +1,445 @@ +#define _GNU_SOURCE +#include <pthread.h> +#include <stdio.h> +#include <dlfcn.h> +#include <stdlib.h> +#include <sysexits.h> +#include "include/liblockdep/mutex.h" +#include "../../../include/linux/rbtree.h" + +/** + * struct lock_lookup - liblockdep's view of a single unique lock + * @orig: pointer to the original pthread lock, used for lookups + * @dep_map: lockdep's dep_map structure + * @key: lockdep's key structure + * @node: rb-tree node used to store the lock in a global tree + * @name: a unique name for the lock + */ +struct lock_lookup { + void *orig; /* Original pthread lock, used for lookups */ + struct lockdep_map dep_map; /* Since all locks are dynamic, we need + * a dep_map and a key for each lock */ + /* + * Wait, there's no support for key classes? Yup :( + * Most big projects wrap the pthread api with their own calls to + * be compatible with different locking methods. This means that + * "classes" will be brokes since the function that creates all + * locks will point to a generic locking function instead of the + * actual code that wants to do the locking. + */ + struct lock_class_key key; + struct rb_node node; +#define LIBLOCKDEP_MAX_LOCK_NAME 22 + char name[LIBLOCKDEP_MAX_LOCK_NAME]; +}; + +/* This is where we store our locks */ +static struct rb_root locks = RB_ROOT; +static pthread_rwlock_t locks_rwlock = PTHREAD_RWLOCK_INITIALIZER; + +/* pthread mutex API */ + +#ifdef __GLIBC__ +extern int __pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr); +extern int __pthread_mutex_lock(pthread_mutex_t *mutex); +extern int __pthread_mutex_trylock(pthread_mutex_t *mutex); +extern int __pthread_mutex_unlock(pthread_mutex_t *mutex); +extern int __pthread_mutex_destroy(pthread_mutex_t *mutex); +#else +#define __pthread_mutex_init NULL +#define __pthread_mutex_lock NULL +#define __pthread_mutex_trylock NULL +#define __pthread_mutex_unlock NULL +#define __pthread_mutex_destroy NULL +#endif +static int (*ll_pthread_mutex_init)(pthread_mutex_t *mutex, + const pthread_mutexattr_t *attr) = __pthread_mutex_init; +static int (*ll_pthread_mutex_lock)(pthread_mutex_t *mutex) = __pthread_mutex_lock; +static int (*ll_pthread_mutex_trylock)(pthread_mutex_t *mutex) = __pthread_mutex_trylock; +static int (*ll_pthread_mutex_unlock)(pthread_mutex_t *mutex) = __pthread_mutex_unlock; +static int (*ll_pthread_mutex_destroy)(pthread_mutex_t *mutex) = __pthread_mutex_destroy; + +/* pthread rwlock API */ + +#ifdef __GLIBC__ +extern int __pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr); +extern int __pthread_rwlock_destroy(pthread_rwlock_t *rwlock); +extern int __pthread_rwlock_wrlock(pthread_rwlock_t *rwlock); +extern int __pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock); +extern int __pthread_rwlock_rdlock(pthread_rwlock_t *rwlock); +extern int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock); +extern int __pthread_rwlock_unlock(pthread_rwlock_t *rwlock); +#else +#define __pthread_rwlock_init NULL +#define __pthread_rwlock_destroy NULL +#define __pthread_rwlock_wrlock NULL +#define __pthread_rwlock_trywrlock NULL +#define __pthread_rwlock_rdlock NULL +#define __pthread_rwlock_tryrdlock NULL +#define __pthread_rwlock_unlock NULL +#endif + +static int (*ll_pthread_rwlock_init)(pthread_rwlock_t *rwlock, + const pthread_rwlockattr_t *attr) = __pthread_rwlock_init; +static int (*ll_pthread_rwlock_destroy)(pthread_rwlock_t *rwlock) = __pthread_rwlock_destroy; +static int (*ll_pthread_rwlock_rdlock)(pthread_rwlock_t *rwlock) = __pthread_rwlock_rdlock; +static int (*ll_pthread_rwlock_tryrdlock)(pthread_rwlock_t *rwlock) = __pthread_rwlock_tryrdlock; +static int (*ll_pthread_rwlock_trywrlock)(pthread_rwlock_t *rwlock) = __pthread_rwlock_trywrlock; +static int (*ll_pthread_rwlock_wrlock)(pthread_rwlock_t *rwlock) = __pthread_rwlock_wrlock; +static int (*ll_pthread_rwlock_unlock)(pthread_rwlock_t *rwlock) = __pthread_rwlock_unlock; + +enum { none, prepare, done, } __init_state; +static void init_preload(void); +static void try_init_preload(void) +{ + if (__init_state != done) + init_preload(); +} + +static struct rb_node **__get_lock_node(void *lock, struct rb_node **parent) +{ + struct rb_node **node = &locks.rb_node; + struct lock_lookup *l; + + *parent = NULL; + + while (*node) { + l = rb_entry(*node, struct lock_lookup, node); + + *parent = *node; + if (lock < l->orig) + node = &l->node.rb_left; + else if (lock > l->orig) + node = &l->node.rb_right; + else + return node; + } + + return node; +} + +#ifndef LIBLOCKDEP_STATIC_ENTRIES +#define LIBLOCKDEP_STATIC_ENTRIES 1024 +#endif + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +static struct lock_lookup __locks[LIBLOCKDEP_STATIC_ENTRIES]; +static int __locks_nr; + +static inline bool is_static_lock(struct lock_lookup *lock) +{ + return lock >= __locks && lock < __locks + ARRAY_SIZE(__locks); +} + +static struct lock_lookup *alloc_lock(void) +{ + if (__init_state != done) { + /* + * Some programs attempt to initialize and use locks in their + * allocation path. This means that a call to malloc() would + * result in locks being initialized and locked. + * + * Why is it an issue for us? dlsym() below will try allocating + * to give us the original function. Since this allocation will + * result in a locking operations, we have to let pthread deal + * with it, but we can't! we don't have the pointer to the + * original API since we're inside dlsym() trying to get it + */ + + int idx = __locks_nr++; + if (idx >= ARRAY_SIZE(__locks)) { + fprintf(stderr, + "LOCKDEP error: insufficient LIBLOCKDEP_STATIC_ENTRIES\n"); + exit(EX_UNAVAILABLE); + } + return __locks + idx; + } + + return malloc(sizeof(struct lock_lookup)); +} + +static inline void free_lock(struct lock_lookup *lock) +{ + if (likely(!is_static_lock(lock))) + free(lock); +} + +/** + * __get_lock - find or create a lock instance + * @lock: pointer to a pthread lock function + * + * Try to find an existing lock in the rbtree using the provided pointer. If + * one wasn't found - create it. + */ +static struct lock_lookup *__get_lock(void *lock) +{ + struct rb_node **node, *parent; + struct lock_lookup *l; + + ll_pthread_rwlock_rdlock(&locks_rwlock); + node = __get_lock_node(lock, &parent); + ll_pthread_rwlock_unlock(&locks_rwlock); + if (*node) { + return rb_entry(*node, struct lock_lookup, node); + } + + /* We didn't find the lock, let's create it */ + l = alloc_lock(); + if (l == NULL) + return NULL; + + l->orig = lock; + /* + * Currently the name of the lock is the ptr value of the pthread lock, + * while not optimal, it makes debugging a bit easier. + * + * TODO: Get the real name of the lock using libdwarf + */ + sprintf(l->name, "%p", lock); + lockdep_init_map(&l->dep_map, l->name, &l->key, 0); + + ll_pthread_rwlock_wrlock(&locks_rwlock); + /* This might have changed since the last time we fetched it */ + node = __get_lock_node(lock, &parent); + rb_link_node(&l->node, parent, node); + rb_insert_color(&l->node, &locks); + ll_pthread_rwlock_unlock(&locks_rwlock); + + return l; +} + +static void __del_lock(struct lock_lookup *lock) +{ + ll_pthread_rwlock_wrlock(&locks_rwlock); + rb_erase(&lock->node, &locks); + ll_pthread_rwlock_unlock(&locks_rwlock); + free_lock(lock); +} + +int pthread_mutex_init(pthread_mutex_t *mutex, + const pthread_mutexattr_t *attr) +{ + int r; + + /* + * We keep trying to init our preload module because there might be + * code in init sections that tries to touch locks before we are + * initialized, in that case we'll need to manually call preload + * to get us going. + * + * Funny enough, kernel's lockdep had the same issue, and used + * (almost) the same solution. See look_up_lock_class() in + * kernel/locking/lockdep.c for details. + */ + try_init_preload(); + + r = ll_pthread_mutex_init(mutex, attr); + if (r == 0) + /* + * We do a dummy initialization here so that lockdep could + * warn us if something fishy is going on - such as + * initializing a held lock. + */ + __get_lock(mutex); + + return r; +} + +int pthread_mutex_lock(pthread_mutex_t *mutex) +{ + int r; + + try_init_preload(); + + lock_acquire(&__get_lock(mutex)->dep_map, 0, 0, 0, 1, NULL, + (unsigned long)_RET_IP_); + /* + * Here's the thing with pthread mutexes: unlike the kernel variant, + * they can fail. + * + * This means that the behaviour here is a bit different from what's + * going on in the kernel: there we just tell lockdep that we took the + * lock before actually taking it, but here we must deal with the case + * that locking failed. + * + * To do that we'll "release" the lock if locking failed - this way + * we'll get lockdep doing the correct checks when we try to take + * the lock, and if that fails - we'll be back to the correct + * state by releasing it. + */ + r = ll_pthread_mutex_lock(mutex); + if (r) + lock_release(&__get_lock(mutex)->dep_map, 0, (unsigned long)_RET_IP_); + + return r; +} + +int pthread_mutex_trylock(pthread_mutex_t *mutex) +{ + int r; + + try_init_preload(); + + lock_acquire(&__get_lock(mutex)->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_); + r = ll_pthread_mutex_trylock(mutex); + if (r) + lock_release(&__get_lock(mutex)->dep_map, 0, (unsigned long)_RET_IP_); + + return r; +} + +int pthread_mutex_unlock(pthread_mutex_t *mutex) +{ + int r; + + try_init_preload(); + + lock_release(&__get_lock(mutex)->dep_map, 0, (unsigned long)_RET_IP_); + /* + * Just like taking a lock, only in reverse! + * + * If we fail releasing the lock, tell lockdep we're holding it again. + */ + r = ll_pthread_mutex_unlock(mutex); + if (r) + lock_acquire(&__get_lock(mutex)->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_); + + return r; +} + +int pthread_mutex_destroy(pthread_mutex_t *mutex) +{ + try_init_preload(); + + /* + * Let's see if we're releasing a lock that's held. + * + * TODO: Hook into free() and add that check there as well. + */ + debug_check_no_locks_freed(mutex, mutex + sizeof(*mutex)); + __del_lock(__get_lock(mutex)); + return ll_pthread_mutex_destroy(mutex); +} + +/* This is the rwlock part, very similar to what happened with mutex above */ +int pthread_rwlock_init(pthread_rwlock_t *rwlock, + const pthread_rwlockattr_t *attr) +{ + int r; + + try_init_preload(); + + r = ll_pthread_rwlock_init(rwlock, attr); + if (r == 0) + __get_lock(rwlock); + + return r; +} + +int pthread_rwlock_destroy(pthread_rwlock_t *rwlock) +{ + try_init_preload(); + + debug_check_no_locks_freed(rwlock, rwlock + sizeof(*rwlock)); + __del_lock(__get_lock(rwlock)); + return ll_pthread_rwlock_destroy(rwlock); +} + +int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock) +{ + int r; + + init_preload(); + + lock_acquire(&__get_lock(rwlock)->dep_map, 0, 0, 2, 1, NULL, (unsigned long)_RET_IP_); + r = ll_pthread_rwlock_rdlock(rwlock); + if (r) + lock_release(&__get_lock(rwlock)->dep_map, 0, (unsigned long)_RET_IP_); + + return r; +} + +int pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock) +{ + int r; + + init_preload(); + + lock_acquire(&__get_lock(rwlock)->dep_map, 0, 1, 2, 1, NULL, (unsigned long)_RET_IP_); + r = ll_pthread_rwlock_tryrdlock(rwlock); + if (r) + lock_release(&__get_lock(rwlock)->dep_map, 0, (unsigned long)_RET_IP_); + + return r; +} + +int pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock) +{ + int r; + + init_preload(); + + lock_acquire(&__get_lock(rwlock)->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_); + r = ll_pthread_rwlock_trywrlock(rwlock); + if (r) + lock_release(&__get_lock(rwlock)->dep_map, 0, (unsigned long)_RET_IP_); + + return r; +} + +int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock) +{ + int r; + + init_preload(); + + lock_acquire(&__get_lock(rwlock)->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_); + r = ll_pthread_rwlock_wrlock(rwlock); + if (r) + lock_release(&__get_lock(rwlock)->dep_map, 0, (unsigned long)_RET_IP_); + + return r; +} + +int pthread_rwlock_unlock(pthread_rwlock_t *rwlock) +{ + int r; + + init_preload(); + + lock_release(&__get_lock(rwlock)->dep_map, 0, (unsigned long)_RET_IP_); + r = ll_pthread_rwlock_unlock(rwlock); + if (r) + lock_acquire(&__get_lock(rwlock)->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_); + + return r; +} + +__attribute__((constructor)) static void init_preload(void) +{ + if (__init_state == done) + return; + +#ifndef __GLIBC__ + __init_state = prepare; + + ll_pthread_mutex_init = dlsym(RTLD_NEXT, "pthread_mutex_init"); + ll_pthread_mutex_lock = dlsym(RTLD_NEXT, "pthread_mutex_lock"); + ll_pthread_mutex_trylock = dlsym(RTLD_NEXT, "pthread_mutex_trylock"); + ll_pthread_mutex_unlock = dlsym(RTLD_NEXT, "pthread_mutex_unlock"); + ll_pthread_mutex_destroy = dlsym(RTLD_NEXT, "pthread_mutex_destroy"); + + ll_pthread_rwlock_init = dlsym(RTLD_NEXT, "pthread_rwlock_init"); + ll_pthread_rwlock_destroy = dlsym(RTLD_NEXT, "pthread_rwlock_destroy"); + ll_pthread_rwlock_rdlock = dlsym(RTLD_NEXT, "pthread_rwlock_rdlock"); + ll_pthread_rwlock_tryrdlock = dlsym(RTLD_NEXT, "pthread_rwlock_tryrdlock"); + ll_pthread_rwlock_wrlock = dlsym(RTLD_NEXT, "pthread_rwlock_wrlock"); + ll_pthread_rwlock_trywrlock = dlsym(RTLD_NEXT, "pthread_rwlock_trywrlock"); + ll_pthread_rwlock_unlock = dlsym(RTLD_NEXT, "pthread_rwlock_unlock"); +#endif + + lockdep_init(); + + __init_state = done; +} diff --git a/tools/lib/lockdep/rbtree.c b/tools/lib/lockdep/rbtree.c new file mode 100644 index 00000000000..f7f43033c8b --- /dev/null +++ b/tools/lib/lockdep/rbtree.c @@ -0,0 +1 @@ +#include "../../../lib/rbtree.c" diff --git a/tools/lib/lockdep/run_tests.sh b/tools/lib/lockdep/run_tests.sh new file mode 100755 index 00000000000..5334ad9d39b --- /dev/null +++ b/tools/lib/lockdep/run_tests.sh @@ -0,0 +1,27 @@ +#! /bin/bash + +make &> /dev/null + +for i in `ls tests/*.c`; do + testname=$(basename -s .c "$i") + gcc -o tests/$testname -pthread -lpthread $i liblockdep.a -Iinclude -D__USE_LIBLOCKDEP &> /dev/null + echo -ne "$testname... " + if [ $(timeout 1 ./tests/$testname | wc -l) -gt 0 ]; then + echo "PASSED!" + else + echo "FAILED!" + fi + rm tests/$testname +done + +for i in `ls tests/*.c`; do + testname=$(basename -s .c "$i") + gcc -o tests/$testname -pthread -lpthread -Iinclude $i &> /dev/null + echo -ne "(PRELOAD) $testname... " + if [ $(timeout 1 ./lockdep ./tests/$testname | wc -l) -gt 0 ]; then + echo "PASSED!" + else + echo "FAILED!" + fi + rm tests/$testname +done diff --git a/tools/lib/lockdep/tests/AA.c b/tools/lib/lockdep/tests/AA.c new file mode 100644 index 00000000000..0f782ff404a --- /dev/null +++ b/tools/lib/lockdep/tests/AA.c @@ -0,0 +1,13 @@ +#include <liblockdep/mutex.h> + +void main(void) +{ + pthread_mutex_t a, b; + + pthread_mutex_init(&a, NULL); + pthread_mutex_init(&b, NULL); + + pthread_mutex_lock(&a); + pthread_mutex_lock(&b); + pthread_mutex_lock(&a); +} diff --git a/tools/lib/lockdep/tests/ABBA.c b/tools/lib/lockdep/tests/ABBA.c new file mode 100644 index 00000000000..07f0e29d548 --- /dev/null +++ b/tools/lib/lockdep/tests/ABBA.c @@ -0,0 +1,13 @@ +#include <liblockdep/mutex.h> +#include "common.h" + +void main(void) +{ + pthread_mutex_t a, b; + + pthread_mutex_init(&a, NULL); + pthread_mutex_init(&b, NULL); + + LOCK_UNLOCK_2(a, b); + LOCK_UNLOCK_2(b, a); +} diff --git a/tools/lib/lockdep/tests/ABBCCA.c b/tools/lib/lockdep/tests/ABBCCA.c new file mode 100644 index 00000000000..843db09ac66 --- /dev/null +++ b/tools/lib/lockdep/tests/ABBCCA.c @@ -0,0 +1,15 @@ +#include <liblockdep/mutex.h> +#include "common.h" + +void main(void) +{ + pthread_mutex_t a, b, c; + + pthread_mutex_init(&a, NULL); + pthread_mutex_init(&b, NULL); + pthread_mutex_init(&c, NULL); + + LOCK_UNLOCK_2(a, b); + LOCK_UNLOCK_2(b, c); + LOCK_UNLOCK_2(c, a); +} diff --git a/tools/lib/lockdep/tests/ABBCCDDA.c b/tools/lib/lockdep/tests/ABBCCDDA.c new file mode 100644 index 00000000000..33620e268f8 --- /dev/null +++ b/tools/lib/lockdep/tests/ABBCCDDA.c @@ -0,0 +1,17 @@ +#include <liblockdep/mutex.h> +#include "common.h" + +void main(void) +{ + pthread_mutex_t a, b, c, d; + + pthread_mutex_init(&a, NULL); + pthread_mutex_init(&b, NULL); + pthread_mutex_init(&c, NULL); + pthread_mutex_init(&d, NULL); + + LOCK_UNLOCK_2(a, b); + LOCK_UNLOCK_2(b, c); + LOCK_UNLOCK_2(c, d); + LOCK_UNLOCK_2(d, a); +} diff --git a/tools/lib/lockdep/tests/ABCABC.c b/tools/lib/lockdep/tests/ABCABC.c new file mode 100644 index 00000000000..3fee51e3a68 --- /dev/null +++ b/tools/lib/lockdep/tests/ABCABC.c @@ -0,0 +1,15 @@ +#include <liblockdep/mutex.h> +#include "common.h" + +void main(void) +{ + pthread_mutex_t a, b, c; + + pthread_mutex_init(&a, NULL); + pthread_mutex_init(&b, NULL); + pthread_mutex_init(&c, NULL); + + LOCK_UNLOCK_2(a, b); + LOCK_UNLOCK_2(c, a); + LOCK_UNLOCK_2(b, c); +} diff --git a/tools/lib/lockdep/tests/ABCDBCDA.c b/tools/lib/lockdep/tests/ABCDBCDA.c new file mode 100644 index 00000000000..427ba562c75 --- /dev/null +++ b/tools/lib/lockdep/tests/ABCDBCDA.c @@ -0,0 +1,17 @@ +#include <liblockdep/mutex.h> +#include "common.h" + +void main(void) +{ + pthread_mutex_t a, b, c, d; + + pthread_mutex_init(&a, NULL); + pthread_mutex_init(&b, NULL); + pthread_mutex_init(&c, NULL); + pthread_mutex_init(&d, NULL); + + LOCK_UNLOCK_2(a, b); + LOCK_UNLOCK_2(c, d); + LOCK_UNLOCK_2(b, c); + LOCK_UNLOCK_2(d, a); +} diff --git a/tools/lib/lockdep/tests/ABCDBDDA.c b/tools/lib/lockdep/tests/ABCDBDDA.c new file mode 100644 index 00000000000..680c6cf3e91 --- /dev/null +++ b/tools/lib/lockdep/tests/ABCDBDDA.c @@ -0,0 +1,17 @@ +#include <liblockdep/mutex.h> +#include "common.h" + +void main(void) +{ + pthread_mutex_t a, b, c, d; + + pthread_mutex_init(&a, NULL); + pthread_mutex_init(&b, NULL); + pthread_mutex_init(&c, NULL); + pthread_mutex_init(&d, NULL); + + LOCK_UNLOCK_2(a, b); + LOCK_UNLOCK_2(c, d); + LOCK_UNLOCK_2(b, d); + LOCK_UNLOCK_2(d, a); +} diff --git a/tools/lib/lockdep/tests/WW.c b/tools/lib/lockdep/tests/WW.c new file mode 100644 index 00000000000..d44f77d7102 --- /dev/null +++ b/tools/lib/lockdep/tests/WW.c @@ -0,0 +1,13 @@ +#include <liblockdep/rwlock.h> + +void main(void) +{ + pthread_rwlock_t a, b; + + pthread_rwlock_init(&a, NULL); + pthread_rwlock_init(&b, NULL); + + pthread_rwlock_wrlock(&a); + pthread_rwlock_rdlock(&b); + pthread_rwlock_wrlock(&a); +} diff --git a/tools/lib/lockdep/tests/common.h b/tools/lib/lockdep/tests/common.h new file mode 100644 index 00000000000..d89e94d47d8 --- /dev/null +++ b/tools/lib/lockdep/tests/common.h @@ -0,0 +1,12 @@ +#ifndef _LIBLOCKDEP_TEST_COMMON_H +#define _LIBLOCKDEP_TEST_COMMON_H + +#define LOCK_UNLOCK_2(a, b) \ + do { \ + pthread_mutex_lock(&(a)); \ + pthread_mutex_lock(&(b)); \ + pthread_mutex_unlock(&(b)); \ + pthread_mutex_unlock(&(a)); \ + } while(0) + +#endif diff --git a/tools/lib/lockdep/tests/unlock_balance.c b/tools/lib/lockdep/tests/unlock_balance.c new file mode 100644 index 00000000000..0bc62de686f --- /dev/null +++ b/tools/lib/lockdep/tests/unlock_balance.c @@ -0,0 +1,12 @@ +#include <liblockdep/mutex.h> + +void main(void) +{ + pthread_mutex_t a; + + pthread_mutex_init(&a, NULL); + + pthread_mutex_lock(&a); + pthread_mutex_unlock(&a); + pthread_mutex_unlock(&a); +} diff --git a/tools/lib/lockdep/uinclude/asm/hash.h b/tools/lib/lockdep/uinclude/asm/hash.h new file mode 100644 index 00000000000..d82b170bb21 --- /dev/null +++ b/tools/lib/lockdep/uinclude/asm/hash.h @@ -0,0 +1,6 @@ +#ifndef __ASM_GENERIC_HASH_H +#define __ASM_GENERIC_HASH_H + +/* Stub */ + +#endif /* __ASM_GENERIC_HASH_H */ diff --git a/tools/lib/lockdep/uinclude/asm/hweight.h b/tools/lib/lockdep/uinclude/asm/hweight.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/asm/hweight.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/asm/sections.h b/tools/lib/lockdep/uinclude/asm/sections.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/asm/sections.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/bitops.h b/tools/lib/lockdep/uinclude/linux/bitops.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/bitops.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/compiler.h b/tools/lib/lockdep/uinclude/linux/compiler.h new file mode 100644 index 00000000000..7ac838a1f19 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/compiler.h @@ -0,0 +1,7 @@ +#ifndef _LIBLOCKDEP_LINUX_COMPILER_H_ +#define _LIBLOCKDEP_LINUX_COMPILER_H_ + +#define __used __attribute__((__unused__)) +#define unlikely + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/debug_locks.h b/tools/lib/lockdep/uinclude/linux/debug_locks.h new file mode 100644 index 00000000000..f38eb64df79 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/debug_locks.h @@ -0,0 +1,12 @@ +#ifndef _LIBLOCKDEP_DEBUG_LOCKS_H_ +#define _LIBLOCKDEP_DEBUG_LOCKS_H_ + +#include <stddef.h> +#include <linux/compiler.h> + +#define DEBUG_LOCKS_WARN_ON(x) (x) + +extern bool debug_locks; +extern bool debug_locks_silent; + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/delay.h b/tools/lib/lockdep/uinclude/linux/delay.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/delay.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/ftrace.h b/tools/lib/lockdep/uinclude/linux/ftrace.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/ftrace.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/gfp.h b/tools/lib/lockdep/uinclude/linux/gfp.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/gfp.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/hardirq.h b/tools/lib/lockdep/uinclude/linux/hardirq.h new file mode 100644 index 00000000000..c8f3f8f5872 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/hardirq.h @@ -0,0 +1,11 @@ +#ifndef _LIBLOCKDEP_LINUX_HARDIRQ_H_ +#define _LIBLOCKDEP_LINUX_HARDIRQ_H_ + +#define SOFTIRQ_BITS 0UL +#define HARDIRQ_BITS 0UL +#define SOFTIRQ_SHIFT 0UL +#define HARDIRQ_SHIFT 0UL +#define hardirq_count() 0UL +#define softirq_count() 0UL + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/hash.h b/tools/lib/lockdep/uinclude/linux/hash.h new file mode 100644 index 00000000000..0f8479858dc --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/hash.h @@ -0,0 +1 @@ +#include "../../../include/linux/hash.h" diff --git a/tools/lib/lockdep/uinclude/linux/interrupt.h b/tools/lib/lockdep/uinclude/linux/interrupt.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/interrupt.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/irqflags.h b/tools/lib/lockdep/uinclude/linux/irqflags.h new file mode 100644 index 00000000000..6cc296f0fad --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/irqflags.h @@ -0,0 +1,38 @@ +#ifndef _LIBLOCKDEP_LINUX_TRACE_IRQFLAGS_H_ +#define _LIBLOCKDEP_LINUX_TRACE_IRQFLAGS_H_ + +# define trace_hardirq_context(p) 0 +# define trace_softirq_context(p) 0 +# define trace_hardirqs_enabled(p) 0 +# define trace_softirqs_enabled(p) 0 +# define trace_hardirq_enter() do { } while (0) +# define trace_hardirq_exit() do { } while (0) +# define lockdep_softirq_enter() do { } while (0) +# define lockdep_softirq_exit() do { } while (0) +# define INIT_TRACE_IRQFLAGS + +# define stop_critical_timings() do { } while (0) +# define start_critical_timings() do { } while (0) + +#define raw_local_irq_disable() do { } while (0) +#define raw_local_irq_enable() do { } while (0) +#define raw_local_irq_save(flags) ((flags) = 0) +#define raw_local_irq_restore(flags) do { } while (0) +#define raw_local_save_flags(flags) ((flags) = 0) +#define raw_irqs_disabled_flags(flags) do { } while (0) +#define raw_irqs_disabled() 0 +#define raw_safe_halt() + +#define local_irq_enable() do { } while (0) +#define local_irq_disable() do { } while (0) +#define local_irq_save(flags) ((flags) = 0) +#define local_irq_restore(flags) do { } while (0) +#define local_save_flags(flags) ((flags) = 0) +#define irqs_disabled() (1) +#define irqs_disabled_flags(flags) (0) +#define safe_halt() do { } while (0) + +#define trace_lock_release(x, y) +#define trace_lock_acquire(a, b, c, d, e, f, g) + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/kallsyms.h b/tools/lib/lockdep/uinclude/linux/kallsyms.h new file mode 100644 index 00000000000..b0f2dbdf1a1 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/kallsyms.h @@ -0,0 +1,32 @@ +#ifndef _LIBLOCKDEP_LINUX_KALLSYMS_H_ +#define _LIBLOCKDEP_LINUX_KALLSYMS_H_ + +#include <linux/kernel.h> +#include <stdio.h> + +#define KSYM_NAME_LEN 128 + +struct module; + +static inline const char *kallsyms_lookup(unsigned long addr, + unsigned long *symbolsize, + unsigned long *offset, + char **modname, char *namebuf) +{ + return NULL; +} + +#include <execinfo.h> +#include <stdlib.h> +static inline void print_ip_sym(unsigned long ip) +{ + char **name; + + name = backtrace_symbols((void **)&ip, 1); + + printf("%s\n", *name); + + free(name); +} + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/kern_levels.h b/tools/lib/lockdep/uinclude/linux/kern_levels.h new file mode 100644 index 00000000000..3b9bade2869 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/kern_levels.h @@ -0,0 +1,25 @@ +#ifndef __KERN_LEVELS_H__ +#define __KERN_LEVELS_H__ + +#define KERN_SOH "" /* ASCII Start Of Header */ +#define KERN_SOH_ASCII '' + +#define KERN_EMERG KERN_SOH "" /* system is unusable */ +#define KERN_ALERT KERN_SOH "" /* action must be taken immediately */ +#define KERN_CRIT KERN_SOH "" /* critical conditions */ +#define KERN_ERR KERN_SOH "" /* error conditions */ +#define KERN_WARNING KERN_SOH "" /* warning conditions */ +#define KERN_NOTICE KERN_SOH "" /* normal but significant condition */ +#define KERN_INFO KERN_SOH "" /* informational */ +#define KERN_DEBUG KERN_SOH "" /* debug-level messages */ + +#define KERN_DEFAULT KERN_SOH "" /* the default kernel loglevel */ + +/* + * Annotation for a "continued" line of log printout (only done after a + * line that had no enclosing \n). Only to be used by core/arch code + * during early bootup (a continued line is not SMP-safe otherwise). + */ +#define KERN_CONT "" + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/kernel.h b/tools/lib/lockdep/uinclude/linux/kernel.h new file mode 100644 index 00000000000..a11e3c357be --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/kernel.h @@ -0,0 +1,44 @@ +#ifndef _LIBLOCKDEP_LINUX_KERNEL_H_ +#define _LIBLOCKDEP_LINUX_KERNEL_H_ + +#include <linux/export.h> +#include <linux/types.h> +#include <linux/rcu.h> +#include <linux/hardirq.h> +#include <linux/kern_levels.h> + +#ifndef container_of +#define container_of(ptr, type, member) ({ \ + const typeof(((type *)0)->member) * __mptr = (ptr); \ + (type *)((char *)__mptr - offsetof(type, member)); }) +#endif + +#define max(x, y) ({ \ + typeof(x) _max1 = (x); \ + typeof(y) _max2 = (y); \ + (void) (&_max1 == &_max2); \ + _max1 > _max2 ? _max1 : _max2; }) + +#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) +#define WARN_ON(x) (x) +#define WARN_ON_ONCE(x) (x) +#define likely(x) (x) +#define WARN(x, y, z) (x) +#define uninitialized_var(x) x +#define __init +#define noinline +#define list_add_tail_rcu list_add_tail + +#ifndef CALLER_ADDR0 +#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) +#endif + +#ifndef _RET_IP_ +#define _RET_IP_ CALLER_ADDR0 +#endif + +#ifndef _THIS_IP_ +#define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; }) +#endif + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/kmemcheck.h b/tools/lib/lockdep/uinclude/linux/kmemcheck.h new file mode 100644 index 00000000000..94d598bc6ab --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/kmemcheck.h @@ -0,0 +1,8 @@ +#ifndef _LIBLOCKDEP_LINUX_KMEMCHECK_H_ +#define _LIBLOCKDEP_LINUX_KMEMCHECK_H_ + +static inline void kmemcheck_mark_initialized(void *address, unsigned int n) +{ +} + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/linkage.h b/tools/lib/lockdep/uinclude/linux/linkage.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/linkage.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/list.h b/tools/lib/lockdep/uinclude/linux/list.h new file mode 100644 index 00000000000..6e9ef31ed82 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/list.h @@ -0,0 +1 @@ +#include "../../../include/linux/list.h" diff --git a/tools/lib/lockdep/uinclude/linux/lockdep.h b/tools/lib/lockdep/uinclude/linux/lockdep.h new file mode 100644 index 00000000000..c1552c28507 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/lockdep.h @@ -0,0 +1,58 @@ +#ifndef _LIBLOCKDEP_LOCKDEP_H_ +#define _LIBLOCKDEP_LOCKDEP_H_ + +#include <sys/prctl.h> +#include <sys/syscall.h> +#include <string.h> +#include <limits.h> +#include <linux/utsname.h> + + +#define MAX_LOCK_DEPTH 2000UL + +#define asmlinkage +#define __visible + +#include "../../../include/linux/lockdep.h" + +struct task_struct { + u64 curr_chain_key; + int lockdep_depth; + unsigned int lockdep_recursion; + struct held_lock held_locks[MAX_LOCK_DEPTH]; + gfp_t lockdep_reclaim_gfp; + int pid; + char comm[17]; +}; + +extern struct task_struct *__curr(void); + +#define current (__curr()) + +#define debug_locks_off() 1 +#define task_pid_nr(tsk) ((tsk)->pid) + +#define KSYM_NAME_LEN 128 +#define printk printf + +#define list_del_rcu list_del + +#define atomic_t unsigned long +#define atomic_inc(x) ((*(x))++) + +static struct new_utsname *init_utsname(void) +{ + static struct new_utsname n = (struct new_utsname) { + .release = "liblockdep", + .version = LIBLOCKDEP_VERSION, + }; + + return &n; +} + +#define print_tainted() "" +#define static_obj(x) 1 + +#define debug_show_all_locks() + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/module.h b/tools/lib/lockdep/uinclude/linux/module.h new file mode 100644 index 00000000000..09c7a7be8cc --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/module.h @@ -0,0 +1,6 @@ +#ifndef _LIBLOCKDEP_LINUX_MODULE_H_ +#define _LIBLOCKDEP_LINUX_MODULE_H_ + +#define module_param(name, type, perm) + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/mutex.h b/tools/lib/lockdep/uinclude/linux/mutex.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/mutex.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/poison.h b/tools/lib/lockdep/uinclude/linux/poison.h new file mode 100644 index 00000000000..0c27bdf1423 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/poison.h @@ -0,0 +1 @@ +#include "../../../include/linux/poison.h" diff --git a/tools/lib/lockdep/uinclude/linux/prefetch.h b/tools/lib/lockdep/uinclude/linux/prefetch.h new file mode 100644 index 00000000000..d73fe6f850a --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/prefetch.h @@ -0,0 +1,6 @@ +#ifndef _LIBLOCKDEP_LINUX_PREFETCH_H_ +#define _LIBLOCKDEP_LINUX_PREFETCH_H + +static inline void prefetch(void *a __attribute__((unused))) { } + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/proc_fs.h b/tools/lib/lockdep/uinclude/linux/proc_fs.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/proc_fs.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/rbtree.h b/tools/lib/lockdep/uinclude/linux/rbtree.h new file mode 100644 index 00000000000..965901db486 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/rbtree.h @@ -0,0 +1 @@ +#include "../../../include/linux/rbtree.h" diff --git a/tools/lib/lockdep/uinclude/linux/rbtree_augmented.h b/tools/lib/lockdep/uinclude/linux/rbtree_augmented.h new file mode 100644 index 00000000000..c3759477379 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/rbtree_augmented.h @@ -0,0 +1,2 @@ +#define __always_inline +#include "../../../include/linux/rbtree_augmented.h" diff --git a/tools/lib/lockdep/uinclude/linux/rcu.h b/tools/lib/lockdep/uinclude/linux/rcu.h new file mode 100644 index 00000000000..042ee8e463c --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/rcu.h @@ -0,0 +1,21 @@ +#ifndef _LIBLOCKDEP_RCU_H_ +#define _LIBLOCKDEP_RCU_H_ + +int rcu_scheduler_active; + +static inline int rcu_lockdep_current_cpu_online(void) +{ + return 1; +} + +static inline int rcu_is_cpu_idle(void) +{ + return 1; +} + +static inline bool rcu_is_watching(void) +{ + return false; +} + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/seq_file.h b/tools/lib/lockdep/uinclude/linux/seq_file.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/seq_file.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/lockdep/uinclude/linux/spinlock.h b/tools/lib/lockdep/uinclude/linux/spinlock.h new file mode 100644 index 00000000000..68c1aa2bcba --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/spinlock.h @@ -0,0 +1,25 @@ +#ifndef _LIBLOCKDEP_SPINLOCK_H_ +#define _LIBLOCKDEP_SPINLOCK_H_ + +#include <pthread.h> +#include <stdbool.h> + +#define arch_spinlock_t pthread_mutex_t +#define __ARCH_SPIN_LOCK_UNLOCKED PTHREAD_MUTEX_INITIALIZER + +static inline void arch_spin_lock(arch_spinlock_t *mutex) +{ + pthread_mutex_lock(mutex); +} + +static inline void arch_spin_unlock(arch_spinlock_t *mutex) +{ + pthread_mutex_unlock(mutex); +} + +static inline bool arch_spin_is_locked(arch_spinlock_t *mutex) +{ + return true; +} + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/stacktrace.h b/tools/lib/lockdep/uinclude/linux/stacktrace.h new file mode 100644 index 00000000000..39aecc6b19d --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/stacktrace.h @@ -0,0 +1,32 @@ +#ifndef _LIBLOCKDEP_LINUX_STACKTRACE_H_ +#define _LIBLOCKDEP_LINUX_STACKTRACE_H_ + +#include <execinfo.h> + +struct stack_trace { + unsigned int nr_entries, max_entries; + unsigned long *entries; + int skip; +}; + +static inline void print_stack_trace(struct stack_trace *trace, int spaces) +{ + backtrace_symbols_fd((void **)trace->entries, trace->nr_entries, 1); +} + +#define save_stack_trace(trace) \ + ((trace)->nr_entries = \ + backtrace((void **)(trace)->entries, (trace)->max_entries)) + +static inline int dump_stack(void) +{ + void *array[64]; + size_t size; + + size = backtrace(array, 64); + backtrace_symbols_fd(array, size, 1); + + return 0; +} + +#endif diff --git a/tools/lib/lockdep/uinclude/linux/stringify.h b/tools/lib/lockdep/uinclude/linux/stringify.h new file mode 100644 index 00000000000..05dfcd1ac11 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/stringify.h @@ -0,0 +1,7 @@ +#ifndef _LIBLOCKDEP_LINUX_STRINGIFY_H_ +#define _LIBLOCKDEP_LINUX_STRINGIFY_H_ + +#define __stringify_1(x...) #x +#define __stringify(x...) __stringify_1(x) + +#endif diff --git a/tools/lib/lockdep/uinclude/trace/events/lock.h b/tools/lib/lockdep/uinclude/trace/events/lock.h new file mode 100644 index 00000000000..fab00ff936d --- /dev/null +++ b/tools/lib/lockdep/uinclude/trace/events/lock.h @@ -0,0 +1,3 @@ + +/* empty file */ + diff --git a/tools/lib/symbol/kallsyms.c b/tools/lib/symbol/kallsyms.c new file mode 100644 index 00000000000..18bc271a4bb --- /dev/null +++ b/tools/lib/symbol/kallsyms.c @@ -0,0 +1,58 @@ +#include "symbol/kallsyms.h" +#include <stdio.h> +#include <stdlib.h> + +int kallsyms__parse(const char *filename, void *arg, + int (*process_symbol)(void *arg, const char *name, + char type, u64 start)) +{ + char *line = NULL; + size_t n; + int err = -1; + FILE *file = fopen(filename, "r"); + + if (file == NULL) + goto out_failure; + + err = 0; + + while (!feof(file)) { + u64 start; + int line_len, len; + char symbol_type; + char *symbol_name; + + line_len = getline(&line, &n, file); + if (line_len < 0 || !line) + break; + + line[--line_len] = '\0'; /* \n */ + + len = hex2u64(line, &start); + + len++; + if (len + 2 >= line_len) + continue; + + symbol_type = line[len]; + len += 2; + symbol_name = line + len; + len = line_len - len; + + if (len >= KSYM_NAME_LEN) { + err = -1; + break; + } + + err = process_symbol(arg, symbol_name, symbol_type, start); + if (err) + break; + } + + free(line); + fclose(file); + return err; + +out_failure: + return -1; +} diff --git a/tools/lib/symbol/kallsyms.h b/tools/lib/symbol/kallsyms.h new file mode 100644 index 00000000000..6084f5e18b3 --- /dev/null +++ b/tools/lib/symbol/kallsyms.h @@ -0,0 +1,24 @@ +#ifndef __TOOLS_KALLSYMS_H_ +#define __TOOLS_KALLSYMS_H_ 1 + +#include <elf.h> +#include <linux/ctype.h> +#include <linux/types.h> + +#ifndef KSYM_NAME_LEN +#define KSYM_NAME_LEN 256 +#endif + +static inline u8 kallsyms2elf_type(char type) +{ + if (type == 'W') + return STB_WEAK; + + return isupper(type) ? STB_GLOBAL : STB_LOCAL; +} + +int kallsyms__parse(const char *filename, void *arg, + int (*process_symbol)(void *arg, const char *name, + char type, u64 start)); + +#endif /* __TOOLS_KALLSYMS_H_ */ diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile index ca6cb779876..005c9cc0693 100644 --- a/tools/lib/traceevent/Makefile +++ b/tools/lib/traceevent/Makefile @@ -43,6 +43,32 @@ man_dir_SQ = '$(subst ','\'',$(man_dir))' export man_dir man_dir_SQ INSTALL export DESTDIR DESTDIR_SQ +set_plugin_dir := 1 + +# Set plugin_dir to preffered global plugin location +# If we install under $HOME directory we go under +# $(HOME)/.traceevent/plugins +# +# We dont set PLUGIN_DIR in case we install under $HOME +# directory, because by default the code looks under: +# $(HOME)/.traceevent/plugins by default. +# +ifeq ($(plugin_dir),) +ifeq ($(prefix),$(HOME)) +override plugin_dir = $(HOME)/.traceevent/plugins +set_plugin_dir := 0 +else +override plugin_dir = $(prefix)/lib/traceevent/plugins +endif +endif + +ifeq ($(set_plugin_dir),1) +PLUGIN_DIR = -DPLUGIN_DIR="$(plugin_dir)" +PLUGIN_DIR_SQ = '$(subst ','\'',$(PLUGIN_DIR))' +endif + +include $(if $(BUILD_SRC),$(BUILD_SRC)/)../../scripts/Makefile.include + # copy a bit from Linux kbuild ifeq ("$(origin V)", "command line") @@ -57,18 +83,13 @@ ifeq ("$(origin O)", "command line") endif ifeq ($(BUILD_SRC),) -ifneq ($(BUILD_OUTPUT),) +ifneq ($(OUTPUT),) define build_output - $(if $(VERBOSE:1=),@)+$(MAKE) -C $(BUILD_OUTPUT) \ - BUILD_SRC=$(CURDIR) -f $(CURDIR)/Makefile $1 + $(if $(VERBOSE:1=),@)+$(MAKE) -C $(OUTPUT) \ + BUILD_SRC=$(CURDIR)/ -f $(CURDIR)/Makefile $1 endef -saved-output := $(BUILD_OUTPUT) -BUILD_OUTPUT := $(shell cd $(BUILD_OUTPUT) && /bin/pwd) -$(if $(BUILD_OUTPUT),, \ - $(error output directory "$(saved-output)" does not exist)) - all: sub-make $(MAKECMDGOALS): sub-make @@ -80,7 +101,7 @@ sub-make: force # Leave processing to above invocation of make skip-makefile := 1 -endif # BUILD_OUTPUT +endif # OUTPUT endif # BUILD_SRC # We process the rest of the Makefile if this is the final invocation of make @@ -96,6 +117,7 @@ export prefix bindir src obj # Shell quotes bindir_SQ = $(subst ','\'',$(bindir)) bindir_relative_SQ = $(subst ','\'',$(bindir_relative)) +plugin_dir_SQ = $(subst ','\'',$(plugin_dir)) LIB_FILE = libtraceevent.a libtraceevent.so @@ -114,7 +136,7 @@ export Q VERBOSE EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION) -INCLUDES = -I. $(CONFIG_INCLUDES) +INCLUDES = -I. -I $(srctree)/../../include $(CONFIG_INCLUDES) # Set compile option CFLAGS if not set elsewhere CFLAGS ?= -g -Wall @@ -125,41 +147,14 @@ override CFLAGS += $(udis86-flags) -D_GNU_SOURCE ifeq ($(VERBOSE),1) Q = - print_compile = - print_app_build = - print_fpic_compile = - print_shared_lib_compile = - print_plugin_obj_compile = - print_plugin_build = - print_install = else Q = @ - print_compile = echo ' CC '$(OBJ); - print_app_build = echo ' BUILD '$(OBJ); - print_fpic_compile = echo ' CC FPIC '$(OBJ); - print_shared_lib_compile = echo ' BUILD SHARED LIB '$(OBJ); - print_plugin_obj_compile = echo ' CC PLUGIN OBJ '$(OBJ); - print_plugin_build = echo ' CC PLUGI '$(OBJ); - print_static_lib_build = echo ' BUILD STATIC LIB '$(OBJ); - print_install = echo ' INSTALL '$1' to $(DESTDIR_SQ)$2'; endif -do_fpic_compile = \ - ($(print_fpic_compile) \ - $(CC) -c $(CFLAGS) $(EXT) -fPIC $< -o $@) - -do_app_build = \ - ($(print_app_build) \ - $(CC) $^ -rdynamic -o $@ $(CONFIG_LIBS) $(LIBS)) - do_compile_shared_library = \ ($(print_shared_lib_compile) \ $(CC) --shared $^ -o $@) -do_compile_plugin_obj = \ - ($(print_plugin_obj_compile) \ - $(CC) -c $(CFLAGS) -fPIC -o $@ $<) - do_plugin_build = \ ($(print_plugin_build) \ $(CC) $(CFLAGS) -shared -nostartfiles -o $@ $<) @@ -169,23 +164,37 @@ do_build_static_lib = \ $(RM) $@; $(AR) rcs $@ $^) -define do_compile - $(print_compile) \ - $(CC) -c $(CFLAGS) $(EXT) $< -o $(obj)/$@; -endef +do_compile = $(QUIET_CC)$(CC) -c $(CFLAGS) $(EXT) $< -o $(obj)/$@; $(obj)/%.o: $(src)/%.c - $(Q)$(call do_compile) + $(call do_compile) %.o: $(src)/%.c - $(Q)$(call do_compile) + $(call do_compile) -PEVENT_LIB_OBJS = event-parse.o trace-seq.o parse-filter.o parse-utils.o +PEVENT_LIB_OBJS = event-parse.o +PEVENT_LIB_OBJS += event-plugin.o +PEVENT_LIB_OBJS += trace-seq.o +PEVENT_LIB_OBJS += parse-filter.o +PEVENT_LIB_OBJS += parse-utils.o PEVENT_LIB_OBJS += kbuffer-parse.o -ALL_OBJS = $(PEVENT_LIB_OBJS) +PLUGIN_OBJS = plugin_jbd2.o +PLUGIN_OBJS += plugin_hrtimer.o +PLUGIN_OBJS += plugin_kmem.o +PLUGIN_OBJS += plugin_kvm.o +PLUGIN_OBJS += plugin_mac80211.o +PLUGIN_OBJS += plugin_sched_switch.o +PLUGIN_OBJS += plugin_function.o +PLUGIN_OBJS += plugin_xen.o +PLUGIN_OBJS += plugin_scsi.o +PLUGIN_OBJS += plugin_cfg80211.o + +PLUGINS := $(PLUGIN_OBJS:.o=.so) + +ALL_OBJS = $(PEVENT_LIB_OBJS) $(PLUGIN_OBJS) -CMD_TARGETS = $(LIB_FILE) +CMD_TARGETS = $(LIB_FILE) $(PLUGINS) TARGETS = $(CMD_TARGETS) @@ -195,32 +204,40 @@ all: all_cmd all_cmd: $(CMD_TARGETS) libtraceevent.so: $(PEVENT_LIB_OBJS) - $(Q)$(do_compile_shared_library) + $(QUIET_LINK)$(CC) --shared $^ -o $@ libtraceevent.a: $(PEVENT_LIB_OBJS) - $(Q)$(do_build_static_lib) + $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^ + +plugins: $(PLUGINS) $(PEVENT_LIB_OBJS): %.o: $(src)/%.c TRACEEVENT-CFLAGS - $(Q)$(do_fpic_compile) + $(QUIET_CC_FPIC)$(CC) -c $(CFLAGS) $(EXT) -fPIC $< -o $@ + +$(PLUGIN_OBJS): %.o : $(src)/%.c + $(QUIET_CC_FPIC)$(CC) -c $(CFLAGS) -fPIC -o $@ $< + +$(PLUGINS): %.so: %.o + $(QUIET_LINK)$(CC) $(CFLAGS) -shared -nostartfiles -o $@ $< define make_version.h - (echo '/* This file is automatically generated. Do not modify. */'; \ - echo \#define VERSION_CODE $(shell \ - expr $(VERSION) \* 256 + $(PATCHLEVEL)); \ - echo '#define EXTRAVERSION ' $(EXTRAVERSION); \ - echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"'; \ - echo '#define FILE_VERSION '$(FILE_VERSION); \ - ) > $1 + (echo '/* This file is automatically generated. Do not modify. */'; \ + echo \#define VERSION_CODE $(shell \ + expr $(VERSION) \* 256 + $(PATCHLEVEL)); \ + echo '#define EXTRAVERSION ' $(EXTRAVERSION); \ + echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"'; \ + echo '#define FILE_VERSION '$(FILE_VERSION); \ + ) > $1 endef define update_version.h - ($(call make_version.h, $@.tmp); \ - if [ -r $@ ] && cmp -s $@ $@.tmp; then \ - rm -f $@.tmp; \ - else \ - echo ' UPDATE $@'; \ - mv -f $@.tmp $@; \ - fi); + ($(call make_version.h, $@.tmp); \ + if [ -r $@ ] && cmp -s $@ $@.tmp; then \ + rm -f $@.tmp; \ + else \ + echo ' UPDATE $@'; \ + mv -f $@.tmp $@; \ + fi); endef ep_version.h: force @@ -229,13 +246,13 @@ ep_version.h: force VERSION_FILES = ep_version.h define update_dir - (echo $1 > $@.tmp; \ - if [ -r $@ ] && cmp -s $@ $@.tmp; then \ - rm -f $@.tmp; \ - else \ - echo ' UPDATE $@'; \ - mv -f $@.tmp $@; \ - fi); + (echo $1 > $@.tmp; \ + if [ -r $@ ] && cmp -s $@ $@.tmp; then \ + rm -f $@.tmp; \ + else \ + echo ' UPDATE $@'; \ + mv -f $@.tmp $@; \ + fi); endef ## make deps @@ -245,10 +262,10 @@ all_deps := $(all_objs:%.o=.%.d) # let .d file also depends on the source and header files define check_deps - @set -e; $(RM) $@; \ - $(CC) -MM $(CFLAGS) $< > $@.$$$$; \ - sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \ - $(RM) $@.$$$$ + @set -e; $(RM) $@; \ + $(CC) -MM $(CFLAGS) $< > $@.$$$$; \ + sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \ + $(RM) $@.$$$$ endef $(all_deps): .%.d: $(src)/%.c @@ -268,7 +285,7 @@ TRACK_CFLAGS = $(subst ','\'',$(CFLAGS)):$(ARCH):$(CROSS_COMPILE) TRACEEVENT-CFLAGS: force @FLAGS='$(TRACK_CFLAGS)'; \ if test x"$$FLAGS" != x"`cat TRACEEVENT-CFLAGS 2>/dev/null`" ; then \ - echo 1>&2 " * new build flags or cross compiler"; \ + echo 1>&2 " FLAGS: * new build flags or cross compiler"; \ echo "$$FLAGS" >TRACEEVENT-CFLAGS; \ fi @@ -283,27 +300,41 @@ TAGS: force --regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/' define do_install - $(print_install) \ if [ ! -d '$(DESTDIR_SQ)$2' ]; then \ $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \ fi; \ $(INSTALL) $1 '$(DESTDIR_SQ)$2' endef -install_lib: all_cmd - $(Q)$(call do_install,$(LIB_FILE),$(bindir_SQ)) +define do_install_plugins + for plugin in $1; do \ + $(call do_install,$$plugin,$(plugin_dir_SQ)); \ + done +endef + +install_lib: all_cmd install_plugins + $(call QUIET_INSTALL, $(LIB_FILE)) \ + $(call do_install,$(LIB_FILE),$(bindir_SQ)) + +install_plugins: $(PLUGINS) + $(call QUIET_INSTALL, trace_plugins) \ + $(call do_install_plugins, $(PLUGINS)) install: install_lib clean: - $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d - $(RM) TRACEEVENT-CFLAGS tags TAGS + $(call QUIET_CLEAN, libtraceevent) \ + $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d \ + $(RM) TRACEEVENT-CFLAGS tags TAGS endif # skip-makefile -PHONY += force +PHONY += force plugins force: +plugins: + @echo > /dev/null + # Declare the contents of the .PHONY variable as phony. We keep that # information in a variable so we can use it in if_changed and friends. .PHONY: $(PHONY) diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index d1c2a6a4cd3..93825a17dcc 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -50,6 +50,18 @@ static int show_warning = 1; warning(fmt, ##__VA_ARGS__); \ } while (0) +#define do_warning_event(event, fmt, ...) \ + do { \ + if (!show_warning) \ + continue; \ + \ + if (event) \ + warning("[%s:%s] " fmt, event->system, \ + event->name, ##__VA_ARGS__); \ + else \ + warning(fmt, ##__VA_ARGS__); \ + } while (0) + static void init_input_buf(const char *buf, unsigned long long size) { input_buf = buf; @@ -305,6 +317,11 @@ int pevent_register_comm(struct pevent *pevent, const char *comm, int pid) return 0; } +void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock) +{ + pevent->trace_clock = trace_clock; +} + struct func_map { unsigned long long addr; char *func; @@ -599,10 +616,11 @@ find_printk(struct pevent *pevent, unsigned long long addr) * This registers a string by the address it was stored in the kernel. * The @fmt passed in is duplicated. */ -int pevent_register_print_string(struct pevent *pevent, char *fmt, +int pevent_register_print_string(struct pevent *pevent, const char *fmt, unsigned long long addr) { struct printk_list *item = malloc(sizeof(*item)); + char *p; if (!item) return -1; @@ -610,10 +628,21 @@ int pevent_register_print_string(struct pevent *pevent, char *fmt, item->next = pevent->printklist; item->addr = addr; + /* Strip off quotes and '\n' from the end */ + if (fmt[0] == '"') + fmt++; item->printk = strdup(fmt); if (!item->printk) goto out_free; + p = item->printk + strlen(item->printk) - 1; + if (*p == '"') + *p = 0; + + p -= 2; + if (strcmp(p, "\\n") == 0) + *p = 0; + pevent->printklist = item; pevent->printk_count++; @@ -736,6 +765,9 @@ static void free_arg(struct print_arg *arg) case PRINT_BSTRING: free(arg->string.string); break; + case PRINT_BITMASK: + free(arg->bitmask.bitmask); + break; case PRINT_DYNAMIC_ARRAY: free(arg->dynarray.index); break; @@ -1338,7 +1370,7 @@ static int event_read_fields(struct event_format *event, struct format_field **f } if (!field->type) { - do_warning("%s: no type found", __func__); + do_warning_event(event, "%s: no type found", __func__); goto fail; } field->name = last_token; @@ -1385,7 +1417,7 @@ static int event_read_fields(struct event_format *event, struct format_field **f free_token(token); type = read_token(&token); if (type == EVENT_NONE) { - do_warning("failed to find token"); + do_warning_event(event, "failed to find token"); goto fail; } } @@ -1589,6 +1621,24 @@ process_arg(struct event_format *event, struct print_arg *arg, char **tok) static enum event_type process_op(struct event_format *event, struct print_arg *arg, char **tok); +/* + * For __print_symbolic() and __print_flags, we need to completely + * evaluate the first argument, which defines what to print next. + */ +static enum event_type +process_field_arg(struct event_format *event, struct print_arg *arg, char **tok) +{ + enum event_type type; + + type = process_arg(event, arg, tok); + + while (type == EVENT_OP) { + type = process_op(event, arg, tok); + } + + return type; +} + static enum event_type process_cond(struct event_format *event, struct print_arg *top, char **tok) { @@ -1601,7 +1651,7 @@ process_cond(struct event_format *event, struct print_arg *top, char **tok) right = alloc_arg(); if (!arg || !left || !right) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", __func__); /* arg will be freed at out_free */ free_arg(left); free_arg(right); @@ -1651,7 +1701,7 @@ process_array(struct event_format *event, struct print_arg *top, char **tok) arg = alloc_arg(); if (!arg) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", __func__); /* '*tok' is set to top->op.op. No need to free. */ *tok = NULL; return EVENT_ERROR; @@ -1757,7 +1807,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) if (arg->type == PRINT_OP && !arg->op.left) { /* handle single op */ if (token[1]) { - do_warning("bad op token %s", token); + do_warning_event(event, "bad op token %s", token); goto out_free; } switch (token[0]) { @@ -1767,7 +1817,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) case '-': break; default: - do_warning("bad op token %s", token); + do_warning_event(event, "bad op token %s", token); goto out_free; } @@ -1853,7 +1903,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) char *new_atom; if (left->type != PRINT_ATOM) { - do_warning("bad pointer type"); + do_warning_event(event, "bad pointer type"); goto out_free; } new_atom = realloc(left->atom.atom, @@ -1895,7 +1945,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) type = process_array(event, arg, tok); } else { - do_warning("unknown op '%s'", token); + do_warning_event(event, "unknown op '%s'", token); event->flags |= EVENT_FL_FAILED; /* the arg is now the left side */ goto out_free; @@ -1916,7 +1966,7 @@ process_op(struct event_format *event, struct print_arg *arg, char **tok) return type; out_warn_free: - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", __func__); out_free: free_token(token); *tok = NULL; @@ -2221,6 +2271,7 @@ static int arg_num_eval(struct print_arg *arg, long long *val) case PRINT_FIELD ... PRINT_SYMBOL: case PRINT_STRING: case PRINT_BSTRING: + case PRINT_BITMASK: default: do_warning("invalid eval type %d", arg->type); ret = 0; @@ -2249,6 +2300,7 @@ static char *arg_eval (struct print_arg *arg) case PRINT_FIELD ... PRINT_SYMBOL: case PRINT_STRING: case PRINT_BSTRING: + case PRINT_BITMASK: default: do_warning("invalid eval type %d", arg->type); break; @@ -2350,11 +2402,11 @@ process_flags(struct event_format *event, struct print_arg *arg, char **tok) field = alloc_arg(); if (!field) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", __func__); goto out_free; } - type = process_arg(event, field, &token); + type = process_field_arg(event, field, &token); /* Handle operations in the first argument */ while (type == EVENT_OP) @@ -2403,11 +2455,12 @@ process_symbols(struct event_format *event, struct print_arg *arg, char **tok) field = alloc_arg(); if (!field) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", __func__); goto out_free; } - type = process_arg(event, field, &token); + type = process_field_arg(event, field, &token); + if (test_type_token(type, token, EVENT_DELIM, ",")) goto out_free_field; @@ -2441,7 +2494,7 @@ process_hex(struct event_format *event, struct print_arg *arg, char **tok) field = alloc_arg(); if (!field) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", __func__); goto out_free; } @@ -2456,7 +2509,7 @@ process_hex(struct event_format *event, struct print_arg *arg, char **tok) field = alloc_arg(); if (!field) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", __func__); *tok = NULL; return EVENT_ERROR; } @@ -2519,7 +2572,7 @@ process_dynamic_array(struct event_format *event, struct print_arg *arg, char ** free_token(token); arg = alloc_arg(); if (!arg) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", __func__); *tok = NULL; return EVENT_ERROR; } @@ -2578,13 +2631,14 @@ process_paren(struct event_format *event, struct print_arg *arg, char **tok) /* prevous must be an atom */ if (arg->type != PRINT_ATOM) { - do_warning("previous needed to be PRINT_ATOM"); + do_warning_event(event, "previous needed to be PRINT_ATOM"); goto out_free; } item_arg = alloc_arg(); if (!item_arg) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", + __func__); goto out_free; } @@ -2634,6 +2688,35 @@ process_str(struct event_format *event __maybe_unused, struct print_arg *arg, return EVENT_ERROR; } +static enum event_type +process_bitmask(struct event_format *event __maybe_unused, struct print_arg *arg, + char **tok) +{ + enum event_type type; + char *token; + + if (read_expect_type(EVENT_ITEM, &token) < 0) + goto out_free; + + arg->type = PRINT_BITMASK; + arg->bitmask.bitmask = token; + arg->bitmask.offset = -1; + + if (read_expected(EVENT_DELIM, ")") < 0) + goto out_err; + + type = read_token(&token); + *tok = token; + + return type; + + out_free: + free_token(token); + out_err: + *tok = NULL; + return EVENT_ERROR; +} + static struct pevent_function_handler * find_func_handler(struct pevent *pevent, char *func_name) { @@ -2674,7 +2757,6 @@ process_func_handler(struct event_format *event, struct pevent_function_handler struct print_arg *farg; enum event_type type; char *token; - const char *test; int i; arg->type = PRINT_FUNC; @@ -2686,20 +2768,27 @@ process_func_handler(struct event_format *event, struct pevent_function_handler for (i = 0; i < func->nr_args; i++) { farg = alloc_arg(); if (!farg) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", + __func__); return EVENT_ERROR; } type = process_arg(event, farg, &token); - if (i < (func->nr_args - 1)) - test = ","; - else - test = ")"; - - if (test_type_token(type, token, EVENT_DELIM, test)) { - free_arg(farg); - free_token(token); - return EVENT_ERROR; + if (i < (func->nr_args - 1)) { + if (type != EVENT_DELIM || strcmp(token, ",") != 0) { + do_warning_event(event, + "Error: function '%s()' expects %d arguments but event %s only uses %d", + func->name, func->nr_args, + event->name, i + 1); + goto err; + } + } else { + if (type != EVENT_DELIM || strcmp(token, ")") != 0) { + do_warning_event(event, + "Error: function '%s()' only expects %d arguments but event %s has more", + func->name, func->nr_args, event->name); + goto err; + } } *next_arg = farg; @@ -2711,6 +2800,11 @@ process_func_handler(struct event_format *event, struct pevent_function_handler *tok = token; return type; + +err: + free_arg(farg); + free_token(token); + return EVENT_ERROR; } static enum event_type @@ -2737,6 +2831,10 @@ process_function(struct event_format *event, struct print_arg *arg, free_token(token); return process_str(event, arg, tok); } + if (strcmp(token, "__get_bitmask") == 0) { + free_token(token); + return process_bitmask(event, arg, tok); + } if (strcmp(token, "__get_dynamic_array") == 0) { free_token(token); return process_dynamic_array(event, arg, tok); @@ -2748,7 +2846,7 @@ process_function(struct event_format *event, struct print_arg *arg, return process_func_handler(event, func, arg, tok); } - do_warning("function %s not defined", token); + do_warning_event(event, "function %s not defined", token); free_token(token); return EVENT_ERROR; } @@ -2834,7 +2932,7 @@ process_arg_token(struct event_format *event, struct print_arg *arg, case EVENT_ERROR ... EVENT_NEWLINE: default: - do_warning("unexpected type %d", type); + do_warning_event(event, "unexpected type %d", type); return EVENT_ERROR; } *tok = token; @@ -2857,7 +2955,8 @@ static int event_read_print_args(struct event_format *event, struct print_arg ** arg = alloc_arg(); if (!arg) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", + __func__); return -1; } @@ -3263,6 +3362,7 @@ eval_num_arg(void *data, int size, struct event_format *event, struct print_arg return eval_type(val, arg, 0); case PRINT_STRING: case PRINT_BSTRING: + case PRINT_BITMASK: return 0; case PRINT_FUNC: { struct trace_seq s; @@ -3418,17 +3518,31 @@ eval_num_arg(void *data, int size, struct event_format *event, struct print_arg goto out_warning_op; } break; + case PRINT_DYNAMIC_ARRAY: + /* Without [], we pass the address to the dynamic data */ + offset = pevent_read_number(pevent, + data + arg->dynarray.field->offset, + arg->dynarray.field->size); + /* + * The actual length of the dynamic array is stored + * in the top half of the field, and the offset + * is in the bottom half of the 32 bit field. + */ + offset &= 0xffff; + val = (unsigned long long)((unsigned long)data + offset); + break; default: /* not sure what to do there */ return 0; } return val; out_warning_op: - do_warning("%s: unknown op '%s'", __func__, arg->op.op); + do_warning_event(event, "%s: unknown op '%s'", __func__, arg->op.op); return 0; out_warning_field: - do_warning("%s: field %s not found", __func__, arg->field.name); + do_warning_event(event, "%s: field %s not found", + __func__, arg->field.name); return 0; } @@ -3481,6 +3595,60 @@ static void print_str_to_seq(struct trace_seq *s, const char *format, trace_seq_printf(s, format, str); } +static void print_bitmask_to_seq(struct pevent *pevent, + struct trace_seq *s, const char *format, + int len_arg, const void *data, int size) +{ + int nr_bits = size * 8; + int str_size = (nr_bits + 3) / 4; + int len = 0; + char buf[3]; + char *str; + int index; + int i; + + /* + * The kernel likes to put in commas every 32 bits, we + * can do the same. + */ + str_size += (nr_bits - 1) / 32; + + str = malloc(str_size + 1); + if (!str) { + do_warning("%s: not enough memory!", __func__); + return; + } + str[str_size] = 0; + + /* Start out with -2 for the two chars per byte */ + for (i = str_size - 2; i >= 0; i -= 2) { + /* + * data points to a bit mask of size bytes. + * In the kernel, this is an array of long words, thus + * endianess is very important. + */ + if (pevent->file_bigendian) + index = size - (len + 1); + else + index = len; + + snprintf(buf, 3, "%02x", *((unsigned char *)data + index)); + memcpy(str + i, buf, 2); + len++; + if (!(len & 3) && i > 0) { + i--; + str[i] = ','; + } + } + + if (len_arg >= 0) + trace_seq_printf(s, format, len_arg, str); + else + trace_seq_printf(s, format, str); + + free(str); +} + static void print_str_arg(struct trace_seq *s, void *data, int size, struct event_format *event, const char *format, int len_arg, struct print_arg *arg) @@ -3488,6 +3656,7 @@ static void print_str_arg(struct trace_seq *s, void *data, int size, struct pevent *pevent = event->pevent; struct print_flag_sym *flag; struct format_field *field; + struct printk_map *printk; unsigned long long val, fval; unsigned long addr; char *str; @@ -3523,12 +3692,18 @@ static void print_str_arg(struct trace_seq *s, void *data, int size, if (!(field->flags & FIELD_IS_ARRAY) && field->size == pevent->long_size) { addr = *(unsigned long *)(data + field->offset); - trace_seq_printf(s, "%lx", addr); + /* Check if it matches a print format */ + printk = find_printk(pevent, addr); + if (printk) + trace_seq_puts(s, printk->printk); + else + trace_seq_printf(s, "%lx", addr); break; } str = malloc(len + 1); if (!str) { - do_warning("%s: not enough memory!", __func__); + do_warning_event(event, "%s: not enough memory!", + __func__); return; } memcpy(str, data + field->offset, len); @@ -3565,15 +3740,23 @@ static void print_str_arg(struct trace_seq *s, void *data, int size, } break; case PRINT_HEX: - field = arg->hex.field->field.field; - if (!field) { - str = arg->hex.field->field.name; - field = pevent_find_any_field(event, str); - if (!field) - goto out_warning_field; - arg->hex.field->field.field = field; + if (arg->hex.field->type == PRINT_DYNAMIC_ARRAY) { + unsigned long offset; + offset = pevent_read_number(pevent, + data + arg->hex.field->dynarray.field->offset, + arg->hex.field->dynarray.field->size); + hex = data + (offset & 0xffff); + } else { + field = arg->hex.field->field.field; + if (!field) { + str = arg->hex.field->field.name; + field = pevent_find_any_field(event, str); + if (!field) + goto out_warning_field; + arg->hex.field->field.field = field; + } + hex = data + field->offset; } - hex = data + field->offset; len = eval_num_arg(data, size, event, arg->hex.size); for (i = 0; i < len; i++) { if (i) @@ -3601,6 +3784,23 @@ static void print_str_arg(struct trace_seq *s, void *data, int size, case PRINT_BSTRING: print_str_to_seq(s, format, len_arg, arg->string.string); break; + case PRINT_BITMASK: { + int bitmask_offset; + int bitmask_size; + + if (arg->bitmask.offset == -1) { + struct format_field *f; + + f = pevent_find_any_field(event, arg->bitmask.bitmask); + arg->bitmask.offset = f->offset; + } + bitmask_offset = data2host4(pevent, data + arg->bitmask.offset); + bitmask_size = bitmask_offset >> 16; + bitmask_offset &= 0xffff; + print_bitmask_to_seq(pevent, s, format, len_arg, + data + bitmask_offset, bitmask_size); + break; + } case PRINT_OP: /* * The only op for string should be ? : @@ -3626,7 +3826,8 @@ static void print_str_arg(struct trace_seq *s, void *data, int size, return; out_warning_field: - do_warning("%s: field %s not found", __func__, arg->field.name); + do_warning_event(event, "%s: field %s not found", + __func__, arg->field.name); } static unsigned long long @@ -3671,14 +3872,16 @@ process_defined_func(struct trace_seq *s, void *data, int size, trace_seq_terminate(&str); string = malloc(sizeof(*string)); if (!string) { - do_warning("%s(%d): malloc str", __func__, __LINE__); + do_warning_event(event, "%s(%d): malloc str", + __func__, __LINE__); goto out_free; } string->next = strings; string->str = strdup(str.buffer); if (!string->str) { free(string); - do_warning("%s(%d): malloc str", __func__, __LINE__); + do_warning_event(event, "%s(%d): malloc str", + __func__, __LINE__); goto out_free; } args[i] = (uintptr_t)string->str; @@ -3690,7 +3893,7 @@ process_defined_func(struct trace_seq *s, void *data, int size, * Something went totally wrong, this is not * an input error, something in this code broke. */ - do_warning("Unexpected end of arguments\n"); + do_warning_event(event, "Unexpected end of arguments\n"); goto out_free; } farg = farg->next; @@ -3740,12 +3943,12 @@ static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struc if (!field) { field = pevent_find_field(event, "buf"); if (!field) { - do_warning("can't find buffer field for binary printk"); + do_warning_event(event, "can't find buffer field for binary printk"); return NULL; } ip_field = pevent_find_field(event, "ip"); if (!ip_field) { - do_warning("can't find ip field for binary printk"); + do_warning_event(event, "can't find ip field for binary printk"); return NULL; } pevent->bprint_buf_field = field; @@ -3759,7 +3962,8 @@ static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struc */ args = alloc_arg(); if (!args) { - do_warning("%s(%d): not enough memory!", __func__, __LINE__); + do_warning_event(event, "%s(%d): not enough memory!", + __func__, __LINE__); return NULL; } arg = args; @@ -3771,8 +3975,8 @@ static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struc if (asprintf(&arg->atom.atom, "%lld", ip) < 0) goto out_free; - /* skip the first "%pf : " */ - for (ptr = fmt + 6, bptr = data + field->offset; + /* skip the first "%pf: " */ + for (ptr = fmt + 5, bptr = data + field->offset; bptr < data + size && *ptr; ptr++) { int ls = 0; @@ -3825,7 +4029,7 @@ static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struc bptr += vsize; arg = alloc_arg(); if (!arg) { - do_warning("%s(%d): not enough memory!", + do_warning_event(event, "%s(%d): not enough memory!", __func__, __LINE__); goto out_free; } @@ -3848,7 +4052,7 @@ static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struc case 's': arg = alloc_arg(); if (!arg) { - do_warning("%s(%d): not enough memory!", + do_warning_event(event, "%s(%d): not enough memory!", __func__, __LINE__); goto out_free; } @@ -3882,14 +4086,13 @@ get_bprint_format(void *data, int size __maybe_unused, struct format_field *field; struct printk_map *printk; char *format; - char *p; field = pevent->bprint_fmt_field; if (!field) { field = pevent_find_field(event, "fmt"); if (!field) { - do_warning("can't find format field for binary printk"); + do_warning_event(event, "can't find format field for binary printk"); return NULL; } pevent->bprint_fmt_field = field; @@ -3899,25 +4102,13 @@ get_bprint_format(void *data, int size __maybe_unused, printk = find_printk(pevent, addr); if (!printk) { - if (asprintf(&format, "%%pf : (NO FORMAT FOUND at %llx)\n", addr) < 0) + if (asprintf(&format, "%%pf: (NO FORMAT FOUND at %llx)\n", addr) < 0) return NULL; return format; } - p = printk->printk; - /* Remove any quotes. */ - if (*p == '"') - p++; - if (asprintf(&format, "%s : %s", "%pf", p) < 0) + if (asprintf(&format, "%s: %s", "%pf", printk->printk) < 0) return NULL; - /* remove ending quotes and new line since we will add one too */ - p = format + strlen(format) - 1; - if (*p == '"') - *p = 0; - - p -= 2; - if (strcmp(p, "\\n") == 0) - *p = 0; return format; } @@ -3945,8 +4136,8 @@ static void print_mac_arg(struct trace_seq *s, int mac, void *data, int size, arg->field.field = pevent_find_any_field(event, arg->field.name); if (!arg->field.field) { - do_warning("%s: field %s not found", - __func__, arg->field.name); + do_warning_event(event, "%s: field %s not found", + __func__, arg->field.name); return; } } @@ -3963,7 +4154,7 @@ static int is_printable_array(char *p, unsigned int len) unsigned int i; for (i = 0; i < len && p[i]; i++) - if (!isprint(p[i])) + if (!isprint(p[i]) && !isspace(p[i])) return 0; return 1; } @@ -4049,6 +4240,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event unsigned long long val; struct func_map *func; const char *saveptr; + struct trace_seq p; char *bprint_fmt = NULL; char format[32]; int show_func; @@ -4117,7 +4309,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event case '*': /* The argument is the length. */ if (!arg) { - do_warning("no argument match"); + do_warning_event(event, "no argument match"); event->flags |= EVENT_FL_FAILED; goto out_failed; } @@ -4154,7 +4346,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event case 'X': case 'u': if (!arg) { - do_warning("no argument match"); + do_warning_event(event, "no argument match"); event->flags |= EVENT_FL_FAILED; goto out_failed; } @@ -4164,7 +4356,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event /* should never happen */ if (len > 31) { - do_warning("bad format!"); + do_warning_event(event, "bad format!"); event->flags |= EVENT_FL_FAILED; len = 31; } @@ -4231,13 +4423,13 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event trace_seq_printf(s, format, (long long)val); break; default: - do_warning("bad count (%d)", ls); + do_warning_event(event, "bad count (%d)", ls); event->flags |= EVENT_FL_FAILED; } break; case 's': if (!arg) { - do_warning("no matching argument"); + do_warning_event(event, "no matching argument"); event->flags |= EVENT_FL_FAILED; goto out_failed; } @@ -4247,7 +4439,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event /* should never happen */ if (len > 31) { - do_warning("bad format!"); + do_warning_event(event, "bad format!"); event->flags |= EVENT_FL_FAILED; len = 31; } @@ -4256,8 +4448,13 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event format[len] = 0; if (!len_as_arg) len_arg = -1; - print_str_arg(s, data, size, event, + /* Use helper trace_seq */ + trace_seq_init(&p); + print_str_arg(&p, data, size, event, format, len_arg, arg); + trace_seq_terminate(&p); + trace_seq_puts(s, p.buffer); + trace_seq_destroy(&p); arg = arg->next; break; default: @@ -4428,11 +4625,11 @@ void pevent_event_info(struct trace_seq *s, struct event_format *event, { int print_pretty = 1; - if (event->pevent->print_raw) + if (event->pevent->print_raw || (event->flags & EVENT_FL_PRINTRAW)) print_event_fields(s, record->data, record->size, event); else { - if (event->handler) + if (event->handler && !(event->flags & EVENT_FL_NOHANDLE)) print_pretty = event->handler(s, record, event, event->context); @@ -4443,8 +4640,21 @@ void pevent_event_info(struct trace_seq *s, struct event_format *event, trace_seq_terminate(s); } +static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock) +{ + if (!use_trace_clock) + return true; + + if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global") + || !strcmp(trace_clock, "uptime") || !strcmp(trace_clock, "perf")) + return true; + + /* trace_clock is setting in tsc or counter mode */ + return false; +} + void pevent_print_event(struct pevent *pevent, struct trace_seq *s, - struct pevent_record *record) + struct pevent_record *record, bool use_trace_clock) { static const char *spaces = " "; /* 20 spaces */ struct event_format *event; @@ -4457,9 +4667,14 @@ void pevent_print_event(struct pevent *pevent, struct trace_seq *s, int pid; int len; int p; + bool use_usec_format; - secs = record->ts / NSECS_PER_SEC; - nsecs = record->ts - secs * NSECS_PER_SEC; + use_usec_format = is_timestamp_in_us(pevent->trace_clock, + use_trace_clock); + if (use_usec_format) { + secs = record->ts / NSECS_PER_SEC; + nsecs = record->ts - secs * NSECS_PER_SEC; + } if (record->size < 0) { do_warning("ug! negative record size %d", record->size); @@ -4484,15 +4699,20 @@ void pevent_print_event(struct pevent *pevent, struct trace_seq *s, } else trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu); - if (pevent->flags & PEVENT_NSEC_OUTPUT) { - usecs = nsecs; - p = 9; - } else { - usecs = (nsecs + 500) / NSECS_PER_USEC; - p = 6; - } + if (use_usec_format) { + if (pevent->flags & PEVENT_NSEC_OUTPUT) { + usecs = nsecs; + p = 9; + } else { + usecs = (nsecs + 500) / NSECS_PER_USEC; + p = 6; + } - trace_seq_printf(s, " %5lu.%0*lu: %s: ", secs, p, usecs, event->name); + trace_seq_printf(s, " %5lu.%0*lu: %s: ", + secs, p, usecs, event->name); + } else + trace_seq_printf(s, " %12llu: %s: ", + record->ts, event->name); /* Space out the event names evenly. */ len = strlen(event->name); @@ -4712,6 +4932,9 @@ static void print_args(struct print_arg *args) case PRINT_BSTRING: printf("__get_str(%s)", args->string.string); break; + case PRINT_BITMASK: + printf("__get_bitmask(%s)", args->bitmask.bitmask); + break; case PRINT_TYPE: printf("(%s)", args->typecast.type); print_args(args->typecast.item); @@ -5043,8 +5266,38 @@ enum pevent_errno __pevent_parse_format(struct event_format **eventp, return ret; } +static enum pevent_errno +__pevent_parse_event(struct pevent *pevent, + struct event_format **eventp, + const char *buf, unsigned long size, + const char *sys) +{ + int ret = __pevent_parse_format(eventp, pevent, buf, size, sys); + struct event_format *event = *eventp; + + if (event == NULL) + return ret; + + if (pevent && add_event(pevent, event)) { + ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; + goto event_add_failed; + } + +#define PRINT_ARGS 0 + if (PRINT_ARGS && event->print_fmt.args) + print_args(event->print_fmt.args); + + return 0; + +event_add_failed: + pevent_free_format(event); + return ret; +} + /** * pevent_parse_format - parse the event format + * @pevent: the handle to the pevent + * @eventp: returned format * @buf: the buffer storing the event format string * @size: the size of @buf * @sys: the system the event belongs to @@ -5056,10 +5309,12 @@ enum pevent_errno __pevent_parse_format(struct event_format **eventp, * * /sys/kernel/debug/tracing/events/.../.../format */ -enum pevent_errno pevent_parse_format(struct event_format **eventp, const char *buf, +enum pevent_errno pevent_parse_format(struct pevent *pevent, + struct event_format **eventp, + const char *buf, unsigned long size, const char *sys) { - return __pevent_parse_format(eventp, NULL, buf, size, sys); + return __pevent_parse_event(pevent, eventp, buf, size, sys); } /** @@ -5080,25 +5335,7 @@ enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, unsigned long size, const char *sys) { struct event_format *event = NULL; - int ret = __pevent_parse_format(&event, pevent, buf, size, sys); - - if (event == NULL) - return ret; - - if (add_event(pevent, event)) { - ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; - goto event_add_failed; - } - -#define PRINT_ARGS 0 - if (PRINT_ARGS && event->print_fmt.args) - print_args(event->print_fmt.args); - - return 0; - -event_add_failed: - pevent_free_format(event); - return ret; + return __pevent_parse_event(pevent, &event, buf, size, sys); } #undef _PE @@ -5130,22 +5367,7 @@ int pevent_strerror(struct pevent *pevent __maybe_unused, idx = errnum - __PEVENT_ERRNO__START - 1; msg = pevent_error_str[idx]; - - switch (errnum) { - case PEVENT_ERRNO__MEM_ALLOC_FAILED: - case PEVENT_ERRNO__PARSE_EVENT_FAILED: - case PEVENT_ERRNO__READ_ID_FAILED: - case PEVENT_ERRNO__READ_FORMAT_FAILED: - case PEVENT_ERRNO__READ_PRINT_FAILED: - case PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED: - case PEVENT_ERRNO__INVALID_ARG_TYPE: - snprintf(buf, buflen, "%s", msg); - break; - - default: - /* cannot reach here */ - break; - } + snprintf(buf, buflen, "%s", msg); return 0; } @@ -5326,6 +5548,48 @@ int pevent_print_num_field(struct trace_seq *s, const char *fmt, return -1; } +/** + * pevent_print_func_field - print a field and a format for function pointers + * @s: The seq to print to + * @fmt: The printf format to print the field with. + * @event: the event that the field is for + * @name: The name of the field + * @record: The record with the field name. + * @err: print default error if failed. + * + * Returns: 0 on success, -1 field not found, or 1 if buffer is full. + */ +int pevent_print_func_field(struct trace_seq *s, const char *fmt, + struct event_format *event, const char *name, + struct pevent_record *record, int err) +{ + struct format_field *field = pevent_find_field(event, name); + struct pevent *pevent = event->pevent; + unsigned long long val; + struct func_map *func; + char tmp[128]; + + if (!field) + goto failed; + + if (pevent_read_number_field(field, record->data, &val)) + goto failed; + + func = find_func(pevent, val); + + if (func) + snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val); + else + sprintf(tmp, "0x%08llx", val); + + return trace_seq_printf(s, fmt, tmp); + + failed: + if (err) + trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); + return -1; +} + static void free_func_handle(struct pevent_function_handler *func) { struct pevent_func_params *params; @@ -5434,6 +5698,52 @@ int pevent_register_print_function(struct pevent *pevent, } /** + * pevent_unregister_print_function - unregister a helper function + * @pevent: the handle to the pevent + * @func: the function to process the helper function + * @name: the name of the helper function + * + * This function removes existing print handler for function @name. + * + * Returns 0 if the handler was removed successully, -1 otherwise. + */ +int pevent_unregister_print_function(struct pevent *pevent, + pevent_func_handler func, char *name) +{ + struct pevent_function_handler *func_handle; + + func_handle = find_func_handler(pevent, name); + if (func_handle && func_handle->func == func) { + remove_func_handler(pevent, name); + return 0; + } + return -1; +} + +static struct event_format *pevent_search_event(struct pevent *pevent, int id, + const char *sys_name, + const char *event_name) +{ + struct event_format *event; + + if (id >= 0) { + /* search by id */ + event = pevent_find_event(pevent, id); + if (!event) + return NULL; + if (event_name && (strcmp(event_name, event->name) != 0)) + return NULL; + if (sys_name && (strcmp(sys_name, event->system) != 0)) + return NULL; + } else { + event = pevent_find_event_by_name(pevent, sys_name, event_name); + if (!event) + return NULL; + } + return event; +} + +/** * pevent_register_event_handler - register a way to parse an event * @pevent: the handle to the pevent * @id: the id of the event to register @@ -5457,20 +5767,9 @@ int pevent_register_event_handler(struct pevent *pevent, int id, struct event_format *event; struct event_handler *handle; - if (id >= 0) { - /* search by id */ - event = pevent_find_event(pevent, id); - if (!event) - goto not_found; - if (event_name && (strcmp(event_name, event->name) != 0)) - goto not_found; - if (sys_name && (strcmp(sys_name, event->system) != 0)) - goto not_found; - } else { - event = pevent_find_event_by_name(pevent, sys_name, event_name); - if (!event) - goto not_found; - } + event = pevent_search_event(pevent, id, sys_name, event_name); + if (event == NULL) + goto not_found; pr_stat("overriding event (%d) %s:%s with new print handler", event->id, event->system, event->name); @@ -5510,6 +5809,79 @@ int pevent_register_event_handler(struct pevent *pevent, int id, return -1; } +static int handle_matches(struct event_handler *handler, int id, + const char *sys_name, const char *event_name, + pevent_event_handler_func func, void *context) +{ + if (id >= 0 && id != handler->id) + return 0; + + if (event_name && (strcmp(event_name, handler->event_name) != 0)) + return 0; + + if (sys_name && (strcmp(sys_name, handler->sys_name) != 0)) + return 0; + + if (func != handler->func || context != handler->context) + return 0; + + return 1; +} + +/** + * pevent_unregister_event_handler - unregister an existing event handler + * @pevent: the handle to the pevent + * @id: the id of the event to unregister + * @sys_name: the system name the handler belongs to + * @event_name: the name of the event handler + * @func: the function to call to parse the event information + * @context: the data to be passed to @func + * + * This function removes existing event handler (parser). + * + * If @id is >= 0, then it is used to find the event. + * else @sys_name and @event_name are used. + * + * Returns 0 if handler was removed successfully, -1 if event was not found. + */ +int pevent_unregister_event_handler(struct pevent *pevent, int id, + const char *sys_name, const char *event_name, + pevent_event_handler_func func, void *context) +{ + struct event_format *event; + struct event_handler *handle; + struct event_handler **next; + + event = pevent_search_event(pevent, id, sys_name, event_name); + if (event == NULL) + goto not_found; + + if (event->handler == func && event->context == context) { + pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.", + event->id, event->system, event->name); + + event->handler = NULL; + event->context = NULL; + return 0; + } + +not_found: + for (next = &pevent->handlers; *next; next = &(*next)->next) { + handle = *next; + if (handle_matches(handle, id, sys_name, event_name, + func, context)) + break; + } + + if (!(*next)) + return -1; + + *next = handle->next; + free_handler(handle); + + return 0; +} + /** * pevent_alloc - create a pevent handle */ diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h index c37b2026d04..7a3873ff9a4 100644 --- a/tools/lib/traceevent/event-parse.h +++ b/tools/lib/traceevent/event-parse.h @@ -20,8 +20,10 @@ #ifndef _PARSE_EVENTS_H #define _PARSE_EVENTS_H +#include <stdbool.h> #include <stdarg.h> #include <regex.h> +#include <string.h> #ifndef __maybe_unused #define __maybe_unused __attribute__((unused)) @@ -56,6 +58,12 @@ struct pevent_record { #endif }; +enum trace_seq_fail { + TRACE_SEQ__GOOD, + TRACE_SEQ__BUFFER_POISONED, + TRACE_SEQ__MEM_ALLOC_FAILED, +}; + /* * Trace sequences are used to allow a function to call several other functions * to create a string of data to use (up to a max of PAGE_SIZE). @@ -66,6 +74,7 @@ struct trace_seq { unsigned int buffer_size; unsigned int len; unsigned int readpos; + enum trace_seq_fail state; }; void trace_seq_init(struct trace_seq *s); @@ -96,10 +105,10 @@ typedef int (*pevent_event_handler_func)(struct trace_seq *s, void *context); typedef int (*pevent_plugin_load_func)(struct pevent *pevent); -typedef int (*pevent_plugin_unload_func)(void); +typedef int (*pevent_plugin_unload_func)(struct pevent *pevent); -struct plugin_option { - struct plugin_option *next; +struct pevent_plugin_option { + struct pevent_plugin_option *next; void *handle; char *file; char *name; @@ -121,12 +130,12 @@ struct plugin_option { * PEVENT_PLUGIN_UNLOADER: (optional) * The function called just before unloading * - * int PEVENT_PLUGIN_UNLOADER(void) + * int PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) * * PEVENT_PLUGIN_OPTIONS: (optional) * Plugin options that can be set before loading * - * struct plugin_option PEVENT_PLUGIN_OPTIONS[] = { + * struct pevent_plugin_option PEVENT_PLUGIN_OPTIONS[] = { * { * .name = "option-name", * .plugin_alias = "overide-file-name", (optional) @@ -199,6 +208,11 @@ struct print_arg_string { int offset; }; +struct print_arg_bitmask { + char *bitmask; + int offset; +}; + struct print_arg_field { char *name; struct format_field *field; @@ -265,6 +279,7 @@ enum print_arg_type { PRINT_DYNAMIC_ARRAY, PRINT_OP, PRINT_FUNC, + PRINT_BITMASK, }; struct print_arg { @@ -279,6 +294,7 @@ struct print_arg { struct print_arg_hex hex; struct print_arg_func func; struct print_arg_string string; + struct print_arg_bitmask bitmask; struct print_arg_op op; struct print_arg_dynarray dynarray; }; @@ -307,6 +323,8 @@ enum { EVENT_FL_ISBPRINT = 0x04, EVENT_FL_ISFUNCENT = 0x10, EVENT_FL_ISFUNCRET = 0x20, + EVENT_FL_NOHANDLE = 0x40, + EVENT_FL_PRINTRAW = 0x80, EVENT_FL_FAILED = 0x80000000 }; @@ -343,6 +361,8 @@ enum pevent_func_arg_type { enum pevent_flag { PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */ + PEVENT_DISABLE_SYS_PLUGINS = 1 << 1, + PEVENT_DISABLE_PLUGINS = 1 << 2, }; #define PEVENT_ERRORS \ @@ -352,12 +372,35 @@ enum pevent_flag { _PE(READ_FORMAT_FAILED, "failed to read event format"), \ _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \ _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\ - _PE(INVALID_ARG_TYPE, "invalid argument type") + _PE(INVALID_ARG_TYPE, "invalid argument type"), \ + _PE(INVALID_EXP_TYPE, "invalid expression type"), \ + _PE(INVALID_OP_TYPE, "invalid operator type"), \ + _PE(INVALID_EVENT_NAME, "invalid event name"), \ + _PE(EVENT_NOT_FOUND, "no event found"), \ + _PE(SYNTAX_ERROR, "syntax error"), \ + _PE(ILLEGAL_RVALUE, "illegal rvalue"), \ + _PE(ILLEGAL_LVALUE, "illegal lvalue for string comparison"), \ + _PE(INVALID_REGEX, "regex did not compute"), \ + _PE(ILLEGAL_STRING_CMP, "illegal comparison for string"), \ + _PE(ILLEGAL_INTEGER_CMP,"illegal comparison for integer"), \ + _PE(REPARENT_NOT_OP, "cannot reparent other than OP"), \ + _PE(REPARENT_FAILED, "failed to reparent filter OP"), \ + _PE(BAD_FILTER_ARG, "bad arg in filter tree"), \ + _PE(UNEXPECTED_TYPE, "unexpected type (not a value)"), \ + _PE(ILLEGAL_TOKEN, "illegal token"), \ + _PE(INVALID_PAREN, "open parenthesis cannot come here"), \ + _PE(UNBALANCED_PAREN, "unbalanced number of parenthesis"), \ + _PE(UNKNOWN_TOKEN, "unknown token"), \ + _PE(FILTER_NOT_FOUND, "no filter found"), \ + _PE(NOT_A_NUMBER, "must have number field"), \ + _PE(NO_FILTER, "no filters exists"), \ + _PE(FILTER_MISS, "record does not match to filter") #undef _PE #define _PE(__code, __str) PEVENT_ERRNO__ ## __code enum pevent_errno { PEVENT_ERRNO__SUCCESS = 0, + PEVENT_ERRNO__FILTER_MATCH = PEVENT_ERRNO__SUCCESS, /* * Choose an arbitrary negative big number not to clash with standard @@ -374,6 +417,22 @@ enum pevent_errno { }; #undef _PE +struct plugin_list; + +#define INVALID_PLUGIN_LIST_OPTION ((char **)((unsigned long)-1)) + +struct plugin_list *traceevent_load_plugins(struct pevent *pevent); +void traceevent_unload_plugins(struct plugin_list *plugin_list, + struct pevent *pevent); +char **traceevent_plugin_list_options(void); +void traceevent_plugin_free_options_list(char **list); +int traceevent_plugin_add_options(const char *name, + struct pevent_plugin_option *options); +void traceevent_plugin_remove_options(struct pevent_plugin_option *options); +void traceevent_print_plugins(struct trace_seq *s, + const char *prefix, const char *suffix, + const struct plugin_list *list); + struct cmdline; struct cmdline_list; struct func_map; @@ -450,6 +509,8 @@ struct pevent { /* cache */ struct event_format *last_event; + + char *trace_clock; }; static inline void pevent_set_flag(struct pevent *pevent, int flag) @@ -517,6 +578,15 @@ __data2host8(struct pevent *pevent, unsigned long long data) __data2host8(pevent, __val); \ }) +static inline int traceevent_host_bigendian(void) +{ + unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 }; + unsigned int val; + + memcpy(&val, str, 4); + return val == 0x01020304; +} + /* taken from kernel/trace/trace.h */ enum trace_flag_type { TRACE_FLAG_IRQS_OFF = 0x01, @@ -527,21 +597,24 @@ enum trace_flag_type { }; int pevent_register_comm(struct pevent *pevent, const char *comm, int pid); +void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock); int pevent_register_function(struct pevent *pevent, char *name, unsigned long long addr, char *mod); -int pevent_register_print_string(struct pevent *pevent, char *fmt, +int pevent_register_print_string(struct pevent *pevent, const char *fmt, unsigned long long addr); int pevent_pid_is_registered(struct pevent *pevent, int pid); void pevent_print_event(struct pevent *pevent, struct trace_seq *s, - struct pevent_record *record); + struct pevent_record *record, bool use_trace_clock); int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size, int long_size); enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf, unsigned long size, const char *sys); -enum pevent_errno pevent_parse_format(struct event_format **eventp, const char *buf, +enum pevent_errno pevent_parse_format(struct pevent *pevent, + struct event_format **eventp, + const char *buf, unsigned long size, const char *sys); void pevent_free_format(struct event_format *event); @@ -563,13 +636,22 @@ int pevent_print_num_field(struct trace_seq *s, const char *fmt, struct event_format *event, const char *name, struct pevent_record *record, int err); +int pevent_print_func_field(struct trace_seq *s, const char *fmt, + struct event_format *event, const char *name, + struct pevent_record *record, int err); + int pevent_register_event_handler(struct pevent *pevent, int id, const char *sys_name, const char *event_name, pevent_event_handler_func func, void *context); +int pevent_unregister_event_handler(struct pevent *pevent, int id, + const char *sys_name, const char *event_name, + pevent_event_handler_func func, void *context); int pevent_register_print_function(struct pevent *pevent, pevent_func_handler func, enum pevent_func_arg_type ret_type, char *name, ...); +int pevent_unregister_print_function(struct pevent *pevent, + pevent_func_handler func, char *name); struct format_field *pevent_find_common_field(struct event_format *event, const char *name); struct format_field *pevent_find_field(struct event_format *event, const char *name); @@ -801,18 +883,22 @@ struct filter_type { struct filter_arg *filter; }; +#define PEVENT_FILTER_ERROR_BUFSZ 1024 + struct event_filter { struct pevent *pevent; int filters; struct filter_type *event_filters; + char error_buffer[PEVENT_FILTER_ERROR_BUFSZ]; }; struct event_filter *pevent_filter_alloc(struct pevent *pevent); -#define FILTER_NONE -2 -#define FILTER_NOEXIST -1 -#define FILTER_MISS 0 -#define FILTER_MATCH 1 +/* for backward compatibility */ +#define FILTER_NONE PEVENT_ERRNO__NO_FILTER +#define FILTER_NOEXIST PEVENT_ERRNO__FILTER_NOT_FOUND +#define FILTER_MISS PEVENT_ERRNO__FILTER_MISS +#define FILTER_MATCH PEVENT_ERRNO__FILTER_MATCH enum filter_trivial_type { FILTER_TRIVIAL_FALSE, @@ -820,20 +906,21 @@ enum filter_trivial_type { FILTER_TRIVIAL_BOTH, }; -int pevent_filter_add_filter_str(struct event_filter *filter, - const char *filter_str, - char **error_str); +enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter, + const char *filter_str); +enum pevent_errno pevent_filter_match(struct event_filter *filter, + struct pevent_record *record); -int pevent_filter_match(struct event_filter *filter, - struct pevent_record *record); +int pevent_filter_strerror(struct event_filter *filter, enum pevent_errno err, + char *buf, size_t buflen); int pevent_event_filtered(struct event_filter *filter, int event_id); void pevent_filter_reset(struct event_filter *filter); -void pevent_filter_clear_trivial(struct event_filter *filter, +int pevent_filter_clear_trivial(struct event_filter *filter, enum filter_trivial_type type); void pevent_filter_free(struct event_filter *filter); diff --git a/tools/lib/traceevent/event-plugin.c b/tools/lib/traceevent/event-plugin.c new file mode 100644 index 00000000000..136162c03af --- /dev/null +++ b/tools/lib/traceevent/event-plugin.c @@ -0,0 +1,416 @@ +/* + * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#include <stdio.h> +#include <string.h> +#include <dlfcn.h> +#include <stdlib.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <dirent.h> +#include "event-parse.h" +#include "event-utils.h" + +#define LOCAL_PLUGIN_DIR ".traceevent/plugins" + +static struct registered_plugin_options { + struct registered_plugin_options *next; + struct pevent_plugin_option *options; +} *registered_options; + +static struct trace_plugin_options { + struct trace_plugin_options *next; + char *plugin; + char *option; + char *value; +} *trace_plugin_options; + +struct plugin_list { + struct plugin_list *next; + char *name; + void *handle; +}; + +/** + * traceevent_plugin_list_options - get list of plugin options + * + * Returns an array of char strings that list the currently registered + * plugin options in the format of <plugin>:<option>. This list can be + * used by toggling the option. + * + * Returns NULL if there's no options registered. On error it returns + * INVALID_PLUGIN_LIST_OPTION + * + * Must be freed with traceevent_plugin_free_options_list(). + */ +char **traceevent_plugin_list_options(void) +{ + struct registered_plugin_options *reg; + struct pevent_plugin_option *op; + char **list = NULL; + char *name; + int count = 0; + + for (reg = registered_options; reg; reg = reg->next) { + for (op = reg->options; op->name; op++) { + char *alias = op->plugin_alias ? op->plugin_alias : op->file; + char **temp = list; + + name = malloc(strlen(op->name) + strlen(alias) + 2); + if (!name) + goto err; + + sprintf(name, "%s:%s", alias, op->name); + list = realloc(list, count + 2); + if (!list) { + list = temp; + free(name); + goto err; + } + list[count++] = name; + list[count] = NULL; + } + } + return list; + + err: + while (--count >= 0) + free(list[count]); + free(list); + + return INVALID_PLUGIN_LIST_OPTION; +} + +void traceevent_plugin_free_options_list(char **list) +{ + int i; + + if (!list) + return; + + if (list == INVALID_PLUGIN_LIST_OPTION) + return; + + for (i = 0; list[i]; i++) + free(list[i]); + + free(list); +} + +static int +update_option(const char *file, struct pevent_plugin_option *option) +{ + struct trace_plugin_options *op; + char *plugin; + + if (option->plugin_alias) { + plugin = strdup(option->plugin_alias); + if (!plugin) + return -1; + } else { + char *p; + plugin = strdup(file); + if (!plugin) + return -1; + p = strstr(plugin, "."); + if (p) + *p = '\0'; + } + + /* first look for named options */ + for (op = trace_plugin_options; op; op = op->next) { + if (!op->plugin) + continue; + if (strcmp(op->plugin, plugin) != 0) + continue; + if (strcmp(op->option, option->name) != 0) + continue; + + option->value = op->value; + option->set ^= 1; + goto out; + } + + /* first look for unnamed options */ + for (op = trace_plugin_options; op; op = op->next) { + if (op->plugin) + continue; + if (strcmp(op->option, option->name) != 0) + continue; + + option->value = op->value; + option->set ^= 1; + break; + } + + out: + free(plugin); + return 0; +} + +/** + * traceevent_plugin_add_options - Add a set of options by a plugin + * @name: The name of the plugin adding the options + * @options: The set of options being loaded + * + * Sets the options with the values that have been added by user. + */ +int traceevent_plugin_add_options(const char *name, + struct pevent_plugin_option *options) +{ + struct registered_plugin_options *reg; + + reg = malloc(sizeof(*reg)); + if (!reg) + return -1; + reg->next = registered_options; + reg->options = options; + registered_options = reg; + + while (options->name) { + update_option(name, options); + options++; + } + return 0; +} + +/** + * traceevent_plugin_remove_options - remove plugin options that were registered + * @options: Options to removed that were registered with traceevent_plugin_add_options + */ +void traceevent_plugin_remove_options(struct pevent_plugin_option *options) +{ + struct registered_plugin_options **last; + struct registered_plugin_options *reg; + + for (last = ®istered_options; *last; last = &(*last)->next) { + if ((*last)->options == options) { + reg = *last; + *last = reg->next; + free(reg); + return; + } + } +} + +/** + * traceevent_print_plugins - print out the list of plugins loaded + * @s: the trace_seq descripter to write to + * @prefix: The prefix string to add before listing the option name + * @suffix: The suffix string ot append after the option name + * @list: The list of plugins (usually returned by traceevent_load_plugins() + * + * Writes to the trace_seq @s the list of plugins (files) that is + * returned by traceevent_load_plugins(). Use @prefix and @suffix for formating: + * @prefix = " ", @suffix = "\n". + */ +void traceevent_print_plugins(struct trace_seq *s, + const char *prefix, const char *suffix, + const struct plugin_list *list) +{ + while (list) { + trace_seq_printf(s, "%s%s%s", prefix, list->name, suffix); + list = list->next; + } +} + +static void +load_plugin(struct pevent *pevent, const char *path, + const char *file, void *data) +{ + struct plugin_list **plugin_list = data; + pevent_plugin_load_func func; + struct plugin_list *list; + const char *alias; + char *plugin; + void *handle; + + plugin = malloc(strlen(path) + strlen(file) + 2); + if (!plugin) { + warning("could not allocate plugin memory\n"); + return; + } + + strcpy(plugin, path); + strcat(plugin, "/"); + strcat(plugin, file); + + handle = dlopen(plugin, RTLD_NOW | RTLD_GLOBAL); + if (!handle) { + warning("could not load plugin '%s'\n%s\n", + plugin, dlerror()); + goto out_free; + } + + alias = dlsym(handle, PEVENT_PLUGIN_ALIAS_NAME); + if (!alias) + alias = file; + + func = dlsym(handle, PEVENT_PLUGIN_LOADER_NAME); + if (!func) { + warning("could not find func '%s' in plugin '%s'\n%s\n", + PEVENT_PLUGIN_LOADER_NAME, plugin, dlerror()); + goto out_free; + } + + list = malloc(sizeof(*list)); + if (!list) { + warning("could not allocate plugin memory\n"); + goto out_free; + } + + list->next = *plugin_list; + list->handle = handle; + list->name = plugin; + *plugin_list = list; + + pr_stat("registering plugin: %s", plugin); + func(pevent); + return; + + out_free: + free(plugin); +} + +static void +load_plugins_dir(struct pevent *pevent, const char *suffix, + const char *path, + void (*load_plugin)(struct pevent *pevent, + const char *path, + const char *name, + void *data), + void *data) +{ + struct dirent *dent; + struct stat st; + DIR *dir; + int ret; + + ret = stat(path, &st); + if (ret < 0) + return; + + if (!S_ISDIR(st.st_mode)) + return; + + dir = opendir(path); + if (!dir) + return; + + while ((dent = readdir(dir))) { + const char *name = dent->d_name; + + if (strcmp(name, ".") == 0 || + strcmp(name, "..") == 0) + continue; + + /* Only load plugins that end in suffix */ + if (strcmp(name + (strlen(name) - strlen(suffix)), suffix) != 0) + continue; + + load_plugin(pevent, path, name, data); + } + + closedir(dir); +} + +static void +load_plugins(struct pevent *pevent, const char *suffix, + void (*load_plugin)(struct pevent *pevent, + const char *path, + const char *name, + void *data), + void *data) +{ + char *home; + char *path; + char *envdir; + + if (pevent->flags & PEVENT_DISABLE_PLUGINS) + return; + + /* + * If a system plugin directory was defined, + * check that first. + */ +#ifdef PLUGIN_DIR + if (!(pevent->flags & PEVENT_DISABLE_SYS_PLUGINS)) + load_plugins_dir(pevent, suffix, PLUGIN_DIR, + load_plugin, data); +#endif + + /* + * Next let the environment-set plugin directory + * override the system defaults. + */ + envdir = getenv("TRACEEVENT_PLUGIN_DIR"); + if (envdir) + load_plugins_dir(pevent, suffix, envdir, load_plugin, data); + + /* + * Now let the home directory override the environment + * or system defaults. + */ + home = getenv("HOME"); + if (!home) + return; + + path = malloc(strlen(home) + strlen(LOCAL_PLUGIN_DIR) + 2); + if (!path) { + warning("could not allocate plugin memory\n"); + return; + } + + strcpy(path, home); + strcat(path, "/"); + strcat(path, LOCAL_PLUGIN_DIR); + + load_plugins_dir(pevent, suffix, path, load_plugin, data); + + free(path); +} + +struct plugin_list* +traceevent_load_plugins(struct pevent *pevent) +{ + struct plugin_list *list = NULL; + + load_plugins(pevent, ".so", load_plugin, &list); + return list; +} + +void +traceevent_unload_plugins(struct plugin_list *plugin_list, struct pevent *pevent) +{ + pevent_plugin_unload_func func; + struct plugin_list *list; + + while (plugin_list) { + list = plugin_list; + plugin_list = list->next; + func = dlsym(list->handle, PEVENT_PLUGIN_UNLOADER_NAME); + if (func) + func(pevent); + dlclose(list->handle); + free(list->name); + free(list); + } +} diff --git a/tools/lib/traceevent/event-utils.h b/tools/lib/traceevent/event-utils.h index e76c9acb92c..d1dc2170e40 100644 --- a/tools/lib/traceevent/event-utils.h +++ b/tools/lib/traceevent/event-utils.h @@ -23,18 +23,14 @@ #include <ctype.h> /* Can be overridden */ -void die(const char *fmt, ...); -void *malloc_or_die(unsigned int size); void warning(const char *fmt, ...); void pr_stat(const char *fmt, ...); void vpr_stat(const char *fmt, va_list ap); /* Always available */ -void __die(const char *fmt, ...); void __warning(const char *fmt, ...); void __pr_stat(const char *fmt, ...); -void __vdie(const char *fmt, ...); void __vwarning(const char *fmt, ...); void __vpr_stat(const char *fmt, ...); diff --git a/tools/lib/traceevent/parse-filter.c b/tools/lib/traceevent/parse-filter.c index 2500e75583f..b50234402fc 100644 --- a/tools/lib/traceevent/parse-filter.c +++ b/tools/lib/traceevent/parse-filter.c @@ -38,41 +38,31 @@ struct event_list { struct event_format *event; }; -#define MAX_ERR_STR_SIZE 256 - -static void show_error(char **error_str, const char *fmt, ...) +static void show_error(char *error_buf, const char *fmt, ...) { unsigned long long index; const char *input; - char *error; va_list ap; int len; int i; - if (!error_str) - return; - input = pevent_get_input_buf(); index = pevent_get_input_buf_ptr(); len = input ? strlen(input) : 0; - error = malloc_or_die(MAX_ERR_STR_SIZE + (len*2) + 3); - if (len) { - strcpy(error, input); - error[len] = '\n'; + strcpy(error_buf, input); + error_buf[len] = '\n'; for (i = 1; i < len && i < index; i++) - error[len+i] = ' '; - error[len + i] = '^'; - error[len + i + 1] = '\n'; + error_buf[len+i] = ' '; + error_buf[len + i] = '^'; + error_buf[len + i + 1] = '\n'; len += i+2; } va_start(ap, fmt); - vsnprintf(error + len, MAX_ERR_STR_SIZE, fmt, ap); + vsnprintf(error_buf + len, PEVENT_FILTER_ERROR_BUFSZ - len, fmt, ap); va_end(ap); - - *error_str = error; } static void free_token(char *token) @@ -95,7 +85,11 @@ static enum event_type read_token(char **tok) (strcmp(token, "=") == 0 || strcmp(token, "!") == 0) && pevent_peek_char() == '~') { /* append it */ - *tok = malloc_or_die(3); + *tok = malloc(3); + if (*tok == NULL) { + free_token(token); + return EVENT_ERROR; + } sprintf(*tok, "%c%c", *token, '~'); free_token(token); /* Now remove the '~' from the buffer */ @@ -147,11 +141,13 @@ add_filter_type(struct event_filter *filter, int id) if (filter_type) return filter_type; - filter->event_filters = realloc(filter->event_filters, - sizeof(*filter->event_filters) * - (filter->filters + 1)); - if (!filter->event_filters) - die("Could not allocate filter"); + filter_type = realloc(filter->event_filters, + sizeof(*filter->event_filters) * + (filter->filters + 1)); + if (!filter_type) + return NULL; + + filter->event_filters = filter_type; for (i = 0; i < filter->filters; i++) { if (filter->event_filters[i].event_id > id) @@ -182,7 +178,10 @@ struct event_filter *pevent_filter_alloc(struct pevent *pevent) { struct event_filter *filter; - filter = malloc_or_die(sizeof(*filter)); + filter = malloc(sizeof(*filter)); + if (filter == NULL) + return NULL; + memset(filter, 0, sizeof(*filter)); filter->pevent = pevent; pevent_ref(pevent); @@ -192,12 +191,7 @@ struct event_filter *pevent_filter_alloc(struct pevent *pevent) static struct filter_arg *allocate_arg(void) { - struct filter_arg *arg; - - arg = malloc_or_die(sizeof(*arg)); - memset(arg, 0, sizeof(*arg)); - - return arg; + return calloc(1, sizeof(struct filter_arg)); } static void free_arg(struct filter_arg *arg) @@ -242,15 +236,19 @@ static void free_arg(struct filter_arg *arg) free(arg); } -static void add_event(struct event_list **events, +static int add_event(struct event_list **events, struct event_format *event) { struct event_list *list; - list = malloc_or_die(sizeof(*list)); + list = malloc(sizeof(*list)); + if (list == NULL) + return -1; + list->next = *events; *events = list; list->event = event; + return 0; } static int event_match(struct event_format *event, @@ -265,7 +263,7 @@ static int event_match(struct event_format *event, !regexec(ereg, event->name, 0, NULL, 0); } -static int +static enum pevent_errno find_event(struct pevent *pevent, struct event_list **events, char *sys_name, char *event_name) { @@ -273,6 +271,7 @@ find_event(struct pevent *pevent, struct event_list **events, regex_t ereg; regex_t sreg; int match = 0; + int fail = 0; char *reg; int ret; int i; @@ -283,23 +282,31 @@ find_event(struct pevent *pevent, struct event_list **events, sys_name = NULL; } - reg = malloc_or_die(strlen(event_name) + 3); + reg = malloc(strlen(event_name) + 3); + if (reg == NULL) + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + sprintf(reg, "^%s$", event_name); ret = regcomp(&ereg, reg, REG_ICASE|REG_NOSUB); free(reg); if (ret) - return -1; + return PEVENT_ERRNO__INVALID_EVENT_NAME; if (sys_name) { - reg = malloc_or_die(strlen(sys_name) + 3); + reg = malloc(strlen(sys_name) + 3); + if (reg == NULL) { + regfree(&ereg); + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + } + sprintf(reg, "^%s$", sys_name); ret = regcomp(&sreg, reg, REG_ICASE|REG_NOSUB); free(reg); if (ret) { regfree(&ereg); - return -1; + return PEVENT_ERRNO__INVALID_EVENT_NAME; } } @@ -307,7 +314,10 @@ find_event(struct pevent *pevent, struct event_list **events, event = pevent->events[i]; if (event_match(event, sys_name ? &sreg : NULL, &ereg)) { match = 1; - add_event(events, event); + if (add_event(events, event) < 0) { + fail = 1; + break; + } } } @@ -316,7 +326,9 @@ find_event(struct pevent *pevent, struct event_list **events, regfree(&sreg); if (!match) - return -1; + return PEVENT_ERRNO__EVENT_NOT_FOUND; + if (fail) + return PEVENT_ERRNO__MEM_ALLOC_FAILED; return 0; } @@ -332,14 +344,18 @@ static void free_events(struct event_list *events) } } -static struct filter_arg * +static enum pevent_errno create_arg_item(struct event_format *event, const char *token, - enum event_type type, char **error_str) + enum event_type type, struct filter_arg **parg, char *error_str) { struct format_field *field; struct filter_arg *arg; arg = allocate_arg(); + if (arg == NULL) { + show_error(error_str, "failed to allocate filter arg"); + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + } switch (type) { @@ -349,8 +365,11 @@ create_arg_item(struct event_format *event, const char *token, arg->value.type = type == EVENT_DQUOTE ? FILTER_STRING : FILTER_CHAR; arg->value.str = strdup(token); - if (!arg->value.str) - die("malloc string"); + if (!arg->value.str) { + free_arg(arg); + show_error(error_str, "failed to allocate string filter arg"); + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + } break; case EVENT_ITEM: /* if it is a number, then convert it */ @@ -377,11 +396,11 @@ create_arg_item(struct event_format *event, const char *token, break; default: free_arg(arg); - show_error(error_str, "expected a value but found %s", - token); - return NULL; + show_error(error_str, "expected a value but found %s", token); + return PEVENT_ERRNO__UNEXPECTED_TYPE; } - return arg; + *parg = arg; + return 0; } static struct filter_arg * @@ -390,6 +409,9 @@ create_arg_op(enum filter_op_type btype) struct filter_arg *arg; arg = allocate_arg(); + if (!arg) + return NULL; + arg->type = FILTER_ARG_OP; arg->op.type = btype; @@ -402,6 +424,9 @@ create_arg_exp(enum filter_exp_type etype) struct filter_arg *arg; arg = allocate_arg(); + if (!arg) + return NULL; + arg->type = FILTER_ARG_EXP; arg->op.type = etype; @@ -414,6 +439,9 @@ create_arg_cmp(enum filter_exp_type etype) struct filter_arg *arg; arg = allocate_arg(); + if (!arg) + return NULL; + /* Use NUM and change if necessary */ arg->type = FILTER_ARG_NUM; arg->op.type = etype; @@ -421,8 +449,8 @@ create_arg_cmp(enum filter_exp_type etype) return arg; } -static int add_right(struct filter_arg *op, struct filter_arg *arg, - char **error_str) +static enum pevent_errno +add_right(struct filter_arg *op, struct filter_arg *arg, char *error_str) { struct filter_arg *left; char *str; @@ -453,9 +481,8 @@ static int add_right(struct filter_arg *op, struct filter_arg *arg, case FILTER_ARG_FIELD: break; default: - show_error(error_str, - "Illegal rvalue"); - return -1; + show_error(error_str, "Illegal rvalue"); + return PEVENT_ERRNO__ILLEGAL_RVALUE; } /* @@ -502,7 +529,7 @@ static int add_right(struct filter_arg *op, struct filter_arg *arg, if (left->type != FILTER_ARG_FIELD) { show_error(error_str, "Illegal lvalue for string comparison"); - return -1; + return PEVENT_ERRNO__ILLEGAL_LVALUE; } /* Make sure this is a valid string compare */ @@ -521,25 +548,31 @@ static int add_right(struct filter_arg *op, struct filter_arg *arg, show_error(error_str, "RegEx '%s' did not compute", str); - return -1; + return PEVENT_ERRNO__INVALID_REGEX; } break; default: show_error(error_str, "Illegal comparison for string"); - return -1; + return PEVENT_ERRNO__ILLEGAL_STRING_CMP; } op->type = FILTER_ARG_STR; op->str.type = op_type; op->str.field = left->field.field; op->str.val = strdup(str); - if (!op->str.val) - die("malloc string"); + if (!op->str.val) { + show_error(error_str, "Failed to allocate string filter"); + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + } /* * Need a buffer to copy data for tests */ - op->str.buffer = malloc_or_die(op->str.field->size + 1); + op->str.buffer = malloc(op->str.field->size + 1); + if (!op->str.buffer) { + show_error(error_str, "Failed to allocate string filter"); + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + } /* Null terminate this buffer */ op->str.buffer[op->str.field->size] = 0; @@ -557,7 +590,7 @@ static int add_right(struct filter_arg *op, struct filter_arg *arg, case FILTER_CMP_NOT_REGEX: show_error(error_str, "Op not allowed with integers"); - return -1; + return PEVENT_ERRNO__ILLEGAL_INTEGER_CMP; default: break; @@ -577,9 +610,8 @@ static int add_right(struct filter_arg *op, struct filter_arg *arg, return 0; out_fail: - show_error(error_str, - "Syntax error"); - return -1; + show_error(error_str, "Syntax error"); + return PEVENT_ERRNO__SYNTAX_ERROR; } static struct filter_arg * @@ -592,7 +624,7 @@ rotate_op_right(struct filter_arg *a, struct filter_arg *b) return arg; } -static int add_left(struct filter_arg *op, struct filter_arg *arg) +static enum pevent_errno add_left(struct filter_arg *op, struct filter_arg *arg) { switch (op->type) { case FILTER_ARG_EXP: @@ -611,11 +643,11 @@ static int add_left(struct filter_arg *op, struct filter_arg *arg) /* left arg of compares must be a field */ if (arg->type != FILTER_ARG_FIELD && arg->type != FILTER_ARG_BOOLEAN) - return -1; + return PEVENT_ERRNO__INVALID_ARG_TYPE; op->num.left = arg; break; default: - return -1; + return PEVENT_ERRNO__INVALID_ARG_TYPE; } return 0; } @@ -728,15 +760,18 @@ enum filter_vals { FILTER_VAL_TRUE, }; -void reparent_op_arg(struct filter_arg *parent, struct filter_arg *old_child, - struct filter_arg *arg) +static enum pevent_errno +reparent_op_arg(struct filter_arg *parent, struct filter_arg *old_child, + struct filter_arg *arg, char *error_str) { struct filter_arg *other_child; struct filter_arg **ptr; if (parent->type != FILTER_ARG_OP && - arg->type != FILTER_ARG_OP) - die("can not reparent other than OP"); + arg->type != FILTER_ARG_OP) { + show_error(error_str, "can not reparent other than OP"); + return PEVENT_ERRNO__REPARENT_NOT_OP; + } /* Get the sibling */ if (old_child->op.right == arg) { @@ -745,8 +780,10 @@ void reparent_op_arg(struct filter_arg *parent, struct filter_arg *old_child, } else if (old_child->op.left == arg) { ptr = &old_child->op.left; other_child = old_child->op.right; - } else - die("Error in reparent op, find other child"); + } else { + show_error(error_str, "Error in reparent op, find other child"); + return PEVENT_ERRNO__REPARENT_FAILED; + } /* Detach arg from old_child */ *ptr = NULL; @@ -757,23 +794,29 @@ void reparent_op_arg(struct filter_arg *parent, struct filter_arg *old_child, *parent = *arg; /* Free arg without recussion */ free(arg); - return; + return 0; } if (parent->op.right == old_child) ptr = &parent->op.right; else if (parent->op.left == old_child) ptr = &parent->op.left; - else - die("Error in reparent op"); + else { + show_error(error_str, "Error in reparent op"); + return PEVENT_ERRNO__REPARENT_FAILED; + } + *ptr = arg; free_arg(old_child); + return 0; } -enum filter_vals test_arg(struct filter_arg *parent, struct filter_arg *arg) +/* Returns either filter_vals (success) or pevent_errno (failfure) */ +static int test_arg(struct filter_arg *parent, struct filter_arg *arg, + char *error_str) { - enum filter_vals lval, rval; + int lval, rval; switch (arg->type) { @@ -788,63 +831,68 @@ enum filter_vals test_arg(struct filter_arg *parent, struct filter_arg *arg) return FILTER_VAL_NORM; case FILTER_ARG_EXP: - lval = test_arg(arg, arg->exp.left); + lval = test_arg(arg, arg->exp.left, error_str); if (lval != FILTER_VAL_NORM) return lval; - rval = test_arg(arg, arg->exp.right); + rval = test_arg(arg, arg->exp.right, error_str); if (rval != FILTER_VAL_NORM) return rval; return FILTER_VAL_NORM; case FILTER_ARG_NUM: - lval = test_arg(arg, arg->num.left); + lval = test_arg(arg, arg->num.left, error_str); if (lval != FILTER_VAL_NORM) return lval; - rval = test_arg(arg, arg->num.right); + rval = test_arg(arg, arg->num.right, error_str); if (rval != FILTER_VAL_NORM) return rval; return FILTER_VAL_NORM; case FILTER_ARG_OP: if (arg->op.type != FILTER_OP_NOT) { - lval = test_arg(arg, arg->op.left); + lval = test_arg(arg, arg->op.left, error_str); switch (lval) { case FILTER_VAL_NORM: break; case FILTER_VAL_TRUE: if (arg->op.type == FILTER_OP_OR) return FILTER_VAL_TRUE; - rval = test_arg(arg, arg->op.right); + rval = test_arg(arg, arg->op.right, error_str); if (rval != FILTER_VAL_NORM) return rval; - reparent_op_arg(parent, arg, arg->op.right); - return FILTER_VAL_NORM; + return reparent_op_arg(parent, arg, arg->op.right, + error_str); case FILTER_VAL_FALSE: if (arg->op.type == FILTER_OP_AND) return FILTER_VAL_FALSE; - rval = test_arg(arg, arg->op.right); + rval = test_arg(arg, arg->op.right, error_str); if (rval != FILTER_VAL_NORM) return rval; - reparent_op_arg(parent, arg, arg->op.right); - return FILTER_VAL_NORM; + return reparent_op_arg(parent, arg, arg->op.right, + error_str); + + default: + return lval; } } - rval = test_arg(arg, arg->op.right); + rval = test_arg(arg, arg->op.right, error_str); switch (rval) { case FILTER_VAL_NORM: + default: break; + case FILTER_VAL_TRUE: if (arg->op.type == FILTER_OP_OR) return FILTER_VAL_TRUE; if (arg->op.type == FILTER_OP_NOT) return FILTER_VAL_FALSE; - reparent_op_arg(parent, arg, arg->op.left); - return FILTER_VAL_NORM; + return reparent_op_arg(parent, arg, arg->op.left, + error_str); case FILTER_VAL_FALSE: if (arg->op.type == FILTER_OP_AND) @@ -852,41 +900,56 @@ enum filter_vals test_arg(struct filter_arg *parent, struct filter_arg *arg) if (arg->op.type == FILTER_OP_NOT) return FILTER_VAL_TRUE; - reparent_op_arg(parent, arg, arg->op.left); - return FILTER_VAL_NORM; + return reparent_op_arg(parent, arg, arg->op.left, + error_str); } - return FILTER_VAL_NORM; + return rval; default: - die("bad arg in filter tree"); + show_error(error_str, "bad arg in filter tree"); + return PEVENT_ERRNO__BAD_FILTER_ARG; } return FILTER_VAL_NORM; } /* Remove any unknown event fields */ -static struct filter_arg *collapse_tree(struct filter_arg *arg) +static int collapse_tree(struct filter_arg *arg, + struct filter_arg **arg_collapsed, char *error_str) { - enum filter_vals ret; + int ret; - ret = test_arg(arg, arg); + ret = test_arg(arg, arg, error_str); switch (ret) { case FILTER_VAL_NORM: - return arg; + break; case FILTER_VAL_TRUE: case FILTER_VAL_FALSE: free_arg(arg); arg = allocate_arg(); - arg->type = FILTER_ARG_BOOLEAN; - arg->boolean.value = ret == FILTER_VAL_TRUE; + if (arg) { + arg->type = FILTER_ARG_BOOLEAN; + arg->boolean.value = ret == FILTER_VAL_TRUE; + } else { + show_error(error_str, "Failed to allocate filter arg"); + ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; + } + break; + + default: + /* test_arg() already set the error_str */ + free_arg(arg); + arg = NULL; + break; } - return arg; + *arg_collapsed = arg; + return ret; } -static int +static enum pevent_errno process_filter(struct event_format *event, struct filter_arg **parg, - char **error_str, int not) + char *error_str, int not) { enum event_type type; char *token = NULL; @@ -898,7 +961,7 @@ process_filter(struct event_format *event, struct filter_arg **parg, enum filter_op_type btype; enum filter_exp_type etype; enum filter_cmp_type ctype; - int ret; + enum pevent_errno ret; *parg = NULL; @@ -909,8 +972,8 @@ process_filter(struct event_format *event, struct filter_arg **parg, case EVENT_SQUOTE: case EVENT_DQUOTE: case EVENT_ITEM: - arg = create_arg_item(event, token, type, error_str); - if (!arg) + ret = create_arg_item(event, token, type, &arg, error_str); + if (ret < 0) goto fail; if (!left_item) left_item = arg; @@ -923,20 +986,20 @@ process_filter(struct event_format *event, struct filter_arg **parg, if (not) { arg = NULL; if (current_op) - goto fail_print; + goto fail_syntax; free(token); *parg = current_exp; return 0; } } else - goto fail_print; + goto fail_syntax; arg = NULL; break; case EVENT_DELIM: if (*token == ',') { - show_error(error_str, - "Illegal token ','"); + show_error(error_str, "Illegal token ','"); + ret = PEVENT_ERRNO__ILLEGAL_TOKEN; goto fail; } @@ -944,19 +1007,23 @@ process_filter(struct event_format *event, struct filter_arg **parg, if (left_item) { show_error(error_str, "Open paren can not come after item"); + ret = PEVENT_ERRNO__INVALID_PAREN; goto fail; } if (current_exp) { show_error(error_str, "Open paren can not come after expression"); + ret = PEVENT_ERRNO__INVALID_PAREN; goto fail; } ret = process_filter(event, &arg, error_str, 0); - if (ret != 1) { - if (ret == 0) + if (ret != PEVENT_ERRNO__UNBALANCED_PAREN) { + if (ret == 0) { show_error(error_str, "Unbalanced number of '('"); + ret = PEVENT_ERRNO__UNBALANCED_PAREN; + } goto fail; } ret = 0; @@ -964,7 +1031,7 @@ process_filter(struct event_format *event, struct filter_arg **parg, /* A not wants just one expression */ if (not) { if (current_op) - goto fail_print; + goto fail_syntax; *parg = arg; return 0; } @@ -979,19 +1046,19 @@ process_filter(struct event_format *event, struct filter_arg **parg, } else { /* ')' */ if (!current_op && !current_exp) - goto fail_print; + goto fail_syntax; /* Make sure everything is finished at this level */ if (current_exp && !check_op_done(current_exp)) - goto fail_print; + goto fail_syntax; if (current_op && !check_op_done(current_op)) - goto fail_print; + goto fail_syntax; if (current_op) *parg = current_op; else *parg = current_exp; - return 1; + return PEVENT_ERRNO__UNBALANCED_PAREN; } break; @@ -1003,21 +1070,22 @@ process_filter(struct event_format *event, struct filter_arg **parg, case OP_BOOL: /* Logic ops need a left expression */ if (!current_exp && !current_op) - goto fail_print; + goto fail_syntax; /* fall through */ case OP_NOT: /* logic only processes ops and exp */ if (left_item) - goto fail_print; + goto fail_syntax; break; case OP_EXP: case OP_CMP: if (!left_item) - goto fail_print; + goto fail_syntax; break; case OP_NONE: show_error(error_str, "Unknown op token %s", token); + ret = PEVENT_ERRNO__UNKNOWN_TOKEN; goto fail; } @@ -1025,6 +1093,8 @@ process_filter(struct event_format *event, struct filter_arg **parg, switch (op_type) { case OP_BOOL: arg = create_arg_op(btype); + if (arg == NULL) + goto fail_alloc; if (current_op) ret = add_left(arg, current_op); else @@ -1035,6 +1105,8 @@ process_filter(struct event_format *event, struct filter_arg **parg, case OP_NOT: arg = create_arg_op(btype); + if (arg == NULL) + goto fail_alloc; if (current_op) ret = add_right(current_op, arg, error_str); if (ret < 0) @@ -1054,6 +1126,8 @@ process_filter(struct event_format *event, struct filter_arg **parg, arg = create_arg_exp(etype); else arg = create_arg_cmp(ctype); + if (arg == NULL) + goto fail_alloc; if (current_op) ret = add_right(current_op, arg, error_str); @@ -1062,7 +1136,7 @@ process_filter(struct event_format *event, struct filter_arg **parg, ret = add_left(arg, left_item); if (ret < 0) { arg = NULL; - goto fail_print; + goto fail_syntax; } current_exp = arg; break; @@ -1071,57 +1145,64 @@ process_filter(struct event_format *event, struct filter_arg **parg, } arg = NULL; if (ret < 0) - goto fail_print; + goto fail_syntax; break; case EVENT_NONE: break; + case EVENT_ERROR: + goto fail_alloc; default: - goto fail_print; + goto fail_syntax; } } while (type != EVENT_NONE); if (!current_op && !current_exp) - goto fail_print; + goto fail_syntax; if (!current_op) current_op = current_exp; - current_op = collapse_tree(current_op); + ret = collapse_tree(current_op, parg, error_str); + if (ret < 0) + goto fail; *parg = current_op; return 0; - fail_print: + fail_alloc: + show_error(error_str, "failed to allocate filter arg"); + ret = PEVENT_ERRNO__MEM_ALLOC_FAILED; + goto fail; + fail_syntax: show_error(error_str, "Syntax error"); + ret = PEVENT_ERRNO__SYNTAX_ERROR; fail: free_arg(current_op); free_arg(current_exp); free_arg(arg); free(token); - return -1; + return ret; } -static int +static enum pevent_errno process_event(struct event_format *event, const char *filter_str, - struct filter_arg **parg, char **error_str) + struct filter_arg **parg, char *error_str) { int ret; pevent_buffer_init(filter_str, strlen(filter_str)); ret = process_filter(event, parg, error_str, 0); - if (ret == 1) { - show_error(error_str, - "Unbalanced number of ')'"); - return -1; - } if (ret < 0) return ret; /* If parg is NULL, then make it into FALSE */ if (!*parg) { *parg = allocate_arg(); + if (*parg == NULL) + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + (*parg)->type = FILTER_ARG_BOOLEAN; (*parg)->boolean.value = FILTER_FALSE; } @@ -1129,13 +1210,13 @@ process_event(struct event_format *event, const char *filter_str, return 0; } -static int filter_event(struct event_filter *filter, - struct event_format *event, - const char *filter_str, char **error_str) +static enum pevent_errno +filter_event(struct event_filter *filter, struct event_format *event, + const char *filter_str, char *error_str) { struct filter_type *filter_type; struct filter_arg *arg; - int ret; + enum pevent_errno ret; if (filter_str) { ret = process_event(event, filter_str, &arg, error_str); @@ -1145,11 +1226,17 @@ static int filter_event(struct event_filter *filter, } else { /* just add a TRUE arg */ arg = allocate_arg(); + if (arg == NULL) + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + arg->type = FILTER_ARG_BOOLEAN; arg->boolean.value = FILTER_TRUE; } filter_type = add_filter_type(filter, event->id); + if (filter_type == NULL) + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + if (filter_type->filter) free_arg(filter_type->filter); filter_type->filter = arg; @@ -1157,22 +1244,24 @@ static int filter_event(struct event_filter *filter, return 0; } +static void filter_init_error_buf(struct event_filter *filter) +{ + /* clear buffer to reset show error */ + pevent_buffer_init("", 0); + filter->error_buffer[0] = '\0'; +} + /** * pevent_filter_add_filter_str - add a new filter * @filter: the event filter to add to * @filter_str: the filter string that contains the filter - * @error_str: string containing reason for failed filter - * - * Returns 0 if the filter was successfully added - * -1 if there was an error. * - * On error, if @error_str points to a string pointer, - * it is set to the reason that the filter failed. - * This string must be freed with "free". + * Returns 0 if the filter was successfully added or a + * negative error code. Use pevent_filter_strerror() to see + * actual error message in case of error. */ -int pevent_filter_add_filter_str(struct event_filter *filter, - const char *filter_str, - char **error_str) +enum pevent_errno pevent_filter_add_filter_str(struct event_filter *filter, + const char *filter_str) { struct pevent *pevent = filter->pevent; struct event_list *event; @@ -1183,15 +1272,11 @@ int pevent_filter_add_filter_str(struct event_filter *filter, char *event_name = NULL; char *sys_name = NULL; char *sp; - int rtn = 0; + enum pevent_errno rtn = 0; /* PEVENT_ERRNO__SUCCESS */ int len; int ret; - /* clear buffer to reset show error */ - pevent_buffer_init("", 0); - - if (error_str) - *error_str = NULL; + filter_init_error_buf(filter); filter_start = strchr(filter_str, ':'); if (filter_start) @@ -1199,7 +1284,6 @@ int pevent_filter_add_filter_str(struct event_filter *filter, else len = strlen(filter_str); - do { next_event = strchr(filter_str, ','); if (next_event && @@ -1210,7 +1294,12 @@ int pevent_filter_add_filter_str(struct event_filter *filter, else len = strlen(filter_str); - this_event = malloc_or_die(len + 1); + this_event = malloc(len + 1); + if (this_event == NULL) { + /* This can only happen when events is NULL, but still */ + free_events(events); + return PEVENT_ERRNO__MEM_ALLOC_FAILED; + } memcpy(this_event, filter_str, len); this_event[len] = 0; @@ -1223,27 +1312,18 @@ int pevent_filter_add_filter_str(struct event_filter *filter, event_name = strtok_r(NULL, "/", &sp); if (!sys_name) { - show_error(error_str, "No filter found"); /* This can only happen when events is NULL, but still */ free_events(events); free(this_event); - return -1; + return PEVENT_ERRNO__FILTER_NOT_FOUND; } /* Find this event */ ret = find_event(pevent, &events, strim(sys_name), strim(event_name)); if (ret < 0) { - if (event_name) - show_error(error_str, - "No event found under '%s.%s'", - sys_name, event_name); - else - show_error(error_str, - "No event found under '%s'", - sys_name); free_events(events); free(this_event); - return -1; + return ret; } free(this_event); } while (filter_str); @@ -1255,7 +1335,7 @@ int pevent_filter_add_filter_str(struct event_filter *filter, /* filter starts here */ for (event = events; event; event = event->next) { ret = filter_event(filter, event->event, filter_start, - error_str); + filter->error_buffer); /* Failures are returned if a parse error happened */ if (ret < 0) rtn = ret; @@ -1263,8 +1343,10 @@ int pevent_filter_add_filter_str(struct event_filter *filter, if (ret >= 0 && pevent->test_filters) { char *test; test = pevent_filter_make_string(filter, event->event->id); - printf(" '%s: %s'\n", event->event->name, test); - free(test); + if (test) { + printf(" '%s: %s'\n", event->event->name, test); + free(test); + } } } @@ -1282,6 +1364,32 @@ static void free_filter_type(struct filter_type *filter_type) } /** + * pevent_filter_strerror - fill error message in a buffer + * @filter: the event filter contains error + * @err: the error code + * @buf: the buffer to be filled in + * @buflen: the size of the buffer + * + * Returns 0 if message was filled successfully, -1 if error + */ +int pevent_filter_strerror(struct event_filter *filter, enum pevent_errno err, + char *buf, size_t buflen) +{ + if (err <= __PEVENT_ERRNO__START || err >= __PEVENT_ERRNO__END) + return -1; + + if (strlen(filter->error_buffer) > 0) { + size_t len = snprintf(buf, buflen, "%s", filter->error_buffer); + + if (len > buflen) + return -1; + return 0; + } + + return pevent_strerror(filter->pevent, err, buf, buflen); +} + +/** * pevent_filter_remove_event - remove a filter for an event * @filter: the event filter to remove from * @event_id: the event to remove a filter for @@ -1374,6 +1482,9 @@ static int copy_filter_type(struct event_filter *filter, if (strcmp(str, "TRUE") == 0 || strcmp(str, "FALSE") == 0) { /* Add trivial event */ arg = allocate_arg(); + if (arg == NULL) + return -1; + arg->type = FILTER_ARG_BOOLEAN; if (strcmp(str, "TRUE") == 0) arg->boolean.value = 1; @@ -1381,6 +1492,9 @@ static int copy_filter_type(struct event_filter *filter, arg->boolean.value = 0; filter_type = add_filter_type(filter, event->id); + if (filter_type == NULL) + return -1; + filter_type->filter = arg; free(str); @@ -1482,8 +1596,10 @@ int pevent_update_trivial(struct event_filter *dest, struct event_filter *source * @type: remove only true, false, or both * * Removes filters that only contain a TRUE or FALES boolean arg. + * + * Returns 0 on success and -1 if there was a problem. */ -void pevent_filter_clear_trivial(struct event_filter *filter, +int pevent_filter_clear_trivial(struct event_filter *filter, enum filter_trivial_type type) { struct filter_type *filter_type; @@ -1492,13 +1608,15 @@ void pevent_filter_clear_trivial(struct event_filter *filter, int i; if (!filter->filters) - return; + return 0; /* * Two steps, first get all ids with trivial filters. * then remove those ids. */ for (i = 0; i < filter->filters; i++) { + int *new_ids; + filter_type = &filter->event_filters[i]; if (filter_type->filter->type != FILTER_ARG_BOOLEAN) continue; @@ -1513,19 +1631,24 @@ void pevent_filter_clear_trivial(struct event_filter *filter, break; } - ids = realloc(ids, sizeof(*ids) * (count + 1)); - if (!ids) - die("Can't allocate ids"); + new_ids = realloc(ids, sizeof(*ids) * (count + 1)); + if (!new_ids) { + free(ids); + return -1; + } + + ids = new_ids; ids[count++] = filter_type->event_id; } if (!count) - return; + return 0; for (i = 0; i < count; i++) pevent_filter_remove_event(filter, ids[i]); free(ids); + return 0; } /** @@ -1565,8 +1688,8 @@ int pevent_filter_event_has_trivial(struct event_filter *filter, } } -static int test_filter(struct event_format *event, - struct filter_arg *arg, struct pevent_record *record); +static int test_filter(struct event_format *event, struct filter_arg *arg, + struct pevent_record *record, enum pevent_errno *err); static const char * get_comm(struct event_format *event, struct pevent_record *record) @@ -1612,15 +1735,24 @@ get_value(struct event_format *event, } static unsigned long long -get_arg_value(struct event_format *event, struct filter_arg *arg, struct pevent_record *record); +get_arg_value(struct event_format *event, struct filter_arg *arg, + struct pevent_record *record, enum pevent_errno *err); static unsigned long long -get_exp_value(struct event_format *event, struct filter_arg *arg, struct pevent_record *record) +get_exp_value(struct event_format *event, struct filter_arg *arg, + struct pevent_record *record, enum pevent_errno *err) { unsigned long long lval, rval; - lval = get_arg_value(event, arg->exp.left, record); - rval = get_arg_value(event, arg->exp.right, record); + lval = get_arg_value(event, arg->exp.left, record, err); + rval = get_arg_value(event, arg->exp.right, record, err); + + if (*err) { + /* + * There was an error, no need to process anymore. + */ + return 0; + } switch (arg->exp.type) { case FILTER_EXP_ADD: @@ -1655,39 +1787,51 @@ get_exp_value(struct event_format *event, struct filter_arg *arg, struct pevent_ case FILTER_EXP_NOT: default: - die("error in exp"); + if (!*err) + *err = PEVENT_ERRNO__INVALID_EXP_TYPE; } return 0; } static unsigned long long -get_arg_value(struct event_format *event, struct filter_arg *arg, struct pevent_record *record) +get_arg_value(struct event_format *event, struct filter_arg *arg, + struct pevent_record *record, enum pevent_errno *err) { switch (arg->type) { case FILTER_ARG_FIELD: return get_value(event, arg->field.field, record); case FILTER_ARG_VALUE: - if (arg->value.type != FILTER_NUMBER) - die("must have number field!"); + if (arg->value.type != FILTER_NUMBER) { + if (!*err) + *err = PEVENT_ERRNO__NOT_A_NUMBER; + } return arg->value.val; case FILTER_ARG_EXP: - return get_exp_value(event, arg, record); + return get_exp_value(event, arg, record, err); default: - die("oops in filter"); + if (!*err) + *err = PEVENT_ERRNO__INVALID_ARG_TYPE; } return 0; } -static int test_num(struct event_format *event, - struct filter_arg *arg, struct pevent_record *record) +static int test_num(struct event_format *event, struct filter_arg *arg, + struct pevent_record *record, enum pevent_errno *err) { unsigned long long lval, rval; - lval = get_arg_value(event, arg->num.left, record); - rval = get_arg_value(event, arg->num.right, record); + lval = get_arg_value(event, arg->num.left, record, err); + rval = get_arg_value(event, arg->num.right, record, err); + + if (*err) { + /* + * There was an error, no need to process anymore. + */ + return 0; + } switch (arg->num.type) { case FILTER_CMP_EQ: @@ -1709,7 +1853,8 @@ static int test_num(struct event_format *event, return lval <= rval; default: - /* ?? */ + if (!*err) + *err = PEVENT_ERRNO__ILLEGAL_INTEGER_CMP; return 0; } } @@ -1756,8 +1901,8 @@ static const char *get_field_str(struct filter_arg *arg, struct pevent_record *r return val; } -static int test_str(struct event_format *event, - struct filter_arg *arg, struct pevent_record *record) +static int test_str(struct event_format *event, struct filter_arg *arg, + struct pevent_record *record, enum pevent_errno *err) { const char *val; @@ -1781,48 +1926,57 @@ static int test_str(struct event_format *event, return regexec(&arg->str.reg, val, 0, NULL, 0); default: - /* ?? */ + if (!*err) + *err = PEVENT_ERRNO__ILLEGAL_STRING_CMP; return 0; } } -static int test_op(struct event_format *event, - struct filter_arg *arg, struct pevent_record *record) +static int test_op(struct event_format *event, struct filter_arg *arg, + struct pevent_record *record, enum pevent_errno *err) { switch (arg->op.type) { case FILTER_OP_AND: - return test_filter(event, arg->op.left, record) && - test_filter(event, arg->op.right, record); + return test_filter(event, arg->op.left, record, err) && + test_filter(event, arg->op.right, record, err); case FILTER_OP_OR: - return test_filter(event, arg->op.left, record) || - test_filter(event, arg->op.right, record); + return test_filter(event, arg->op.left, record, err) || + test_filter(event, arg->op.right, record, err); case FILTER_OP_NOT: - return !test_filter(event, arg->op.right, record); + return !test_filter(event, arg->op.right, record, err); default: - /* ?? */ + if (!*err) + *err = PEVENT_ERRNO__INVALID_OP_TYPE; return 0; } } -static int test_filter(struct event_format *event, - struct filter_arg *arg, struct pevent_record *record) +static int test_filter(struct event_format *event, struct filter_arg *arg, + struct pevent_record *record, enum pevent_errno *err) { + if (*err) { + /* + * There was an error, no need to process anymore. + */ + return 0; + } + switch (arg->type) { case FILTER_ARG_BOOLEAN: /* easy case */ return arg->boolean.value; case FILTER_ARG_OP: - return test_op(event, arg, record); + return test_op(event, arg, record, err); case FILTER_ARG_NUM: - return test_num(event, arg, record); + return test_num(event, arg, record, err); case FILTER_ARG_STR: - return test_str(event, arg, record); + return test_str(event, arg, record, err); case FILTER_ARG_EXP: case FILTER_ARG_VALUE: @@ -1831,11 +1985,11 @@ static int test_filter(struct event_format *event, * Expressions, fields and values evaluate * to true if they return non zero */ - return !!get_arg_value(event, arg, record); + return !!get_arg_value(event, arg, record, err); default: - die("oops!"); - /* ?? */ + if (!*err) + *err = PEVENT_ERRNO__INVALID_ARG_TYPE; return 0; } } @@ -1848,8 +2002,7 @@ static int test_filter(struct event_format *event, * Returns 1 if filter found for @event_id * otherwise 0; */ -int pevent_event_filtered(struct event_filter *filter, - int event_id) +int pevent_event_filtered(struct event_filter *filter, int event_id) { struct filter_type *filter_type; @@ -1866,31 +2019,38 @@ int pevent_event_filtered(struct event_filter *filter, * @filter: filter struct with filter information * @record: the record to test against the filter * - * Returns: - * 1 - filter found for event and @record matches - * 0 - filter found for event and @record does not match - * -1 - no filter found for @record's event - * -2 - if no filters exist + * Returns: match result or error code (prefixed with PEVENT_ERRNO__) + * FILTER_MATCH - filter found for event and @record matches + * FILTER_MISS - filter found for event and @record does not match + * FILTER_NOT_FOUND - no filter found for @record's event + * NO_FILTER - if no filters exist + * otherwise - error occurred during test */ -int pevent_filter_match(struct event_filter *filter, - struct pevent_record *record) +enum pevent_errno pevent_filter_match(struct event_filter *filter, + struct pevent_record *record) { struct pevent *pevent = filter->pevent; struct filter_type *filter_type; int event_id; + int ret; + enum pevent_errno err = 0; + + filter_init_error_buf(filter); if (!filter->filters) - return FILTER_NONE; + return PEVENT_ERRNO__NO_FILTER; event_id = pevent_data_type(pevent, record); filter_type = find_filter_type(filter, event_id); - if (!filter_type) - return FILTER_NOEXIST; + return PEVENT_ERRNO__FILTER_NOT_FOUND; + + ret = test_filter(filter_type->event, filter_type->filter, record, &err); + if (err) + return err; - return test_filter(filter_type->event, filter_type->filter, record) ? - FILTER_MATCH : FILTER_MISS; + return ret ? PEVENT_ERRNO__FILTER_MATCH : PEVENT_ERRNO__FILTER_MISS; } static char *op_to_str(struct event_filter *filter, struct filter_arg *arg) @@ -1902,7 +2062,6 @@ static char *op_to_str(struct event_filter *filter, struct filter_arg *arg) int left_val = -1; int right_val = -1; int val; - int len; switch (arg->op.type) { case FILTER_OP_AND: @@ -1949,11 +2108,7 @@ static char *op_to_str(struct event_filter *filter, struct filter_arg *arg) default: break; } - str = malloc_or_die(6); - if (val) - strcpy(str, "TRUE"); - else - strcpy(str, "FALSE"); + asprintf(&str, val ? "TRUE" : "FALSE"); break; } } @@ -1971,10 +2126,7 @@ static char *op_to_str(struct event_filter *filter, struct filter_arg *arg) break; } - len = strlen(left) + strlen(right) + strlen(op) + 10; - str = malloc_or_die(len); - snprintf(str, len, "(%s) %s (%s)", - left, op, right); + asprintf(&str, "(%s) %s (%s)", left, op, right); break; case FILTER_OP_NOT: @@ -1990,16 +2142,10 @@ static char *op_to_str(struct event_filter *filter, struct filter_arg *arg) right_val = 0; if (right_val >= 0) { /* just return the opposite */ - str = malloc_or_die(6); - if (right_val) - strcpy(str, "FALSE"); - else - strcpy(str, "TRUE"); + asprintf(&str, right_val ? "FALSE" : "TRUE"); break; } - len = strlen(right) + strlen(op) + 3; - str = malloc_or_die(len); - snprintf(str, len, "%s(%s)", op, right); + asprintf(&str, "%s(%s)", op, right); break; default: @@ -2013,11 +2159,9 @@ static char *op_to_str(struct event_filter *filter, struct filter_arg *arg) static char *val_to_str(struct event_filter *filter, struct filter_arg *arg) { - char *str; - - str = malloc_or_die(30); + char *str = NULL; - snprintf(str, 30, "%lld", arg->value.val); + asprintf(&str, "%lld", arg->value.val); return str; } @@ -2033,7 +2177,6 @@ static char *exp_to_str(struct event_filter *filter, struct filter_arg *arg) char *rstr; char *op; char *str = NULL; - int len; lstr = arg_to_str(filter, arg->exp.left); rstr = arg_to_str(filter, arg->exp.right); @@ -2072,12 +2215,11 @@ static char *exp_to_str(struct event_filter *filter, struct filter_arg *arg) op = "^"; break; default: - die("oops in exp"); + op = "[ERROR IN EXPRESSION TYPE]"; + break; } - len = strlen(op) + strlen(lstr) + strlen(rstr) + 4; - str = malloc_or_die(len); - snprintf(str, len, "%s %s %s", lstr, op, rstr); + asprintf(&str, "%s %s %s", lstr, op, rstr); out: free(lstr); free(rstr); @@ -2091,7 +2233,6 @@ static char *num_to_str(struct event_filter *filter, struct filter_arg *arg) char *rstr; char *str = NULL; char *op = NULL; - int len; lstr = arg_to_str(filter, arg->num.left); rstr = arg_to_str(filter, arg->num.right); @@ -2122,10 +2263,7 @@ static char *num_to_str(struct event_filter *filter, struct filter_arg *arg) if (!op) op = "<="; - len = strlen(lstr) + strlen(op) + strlen(rstr) + 4; - str = malloc_or_die(len); - sprintf(str, "%s %s %s", lstr, op, rstr); - + asprintf(&str, "%s %s %s", lstr, op, rstr); break; default: @@ -2143,7 +2281,6 @@ static char *str_to_str(struct event_filter *filter, struct filter_arg *arg) { char *str = NULL; char *op = NULL; - int len; switch (arg->str.type) { case FILTER_CMP_MATCH: @@ -2161,12 +2298,8 @@ static char *str_to_str(struct event_filter *filter, struct filter_arg *arg) if (!op) op = "!~"; - len = strlen(arg->str.field->name) + strlen(op) + - strlen(arg->str.val) + 6; - str = malloc_or_die(len); - snprintf(str, len, "%s %s \"%s\"", - arg->str.field->name, - op, arg->str.val); + asprintf(&str, "%s %s \"%s\"", + arg->str.field->name, op, arg->str.val); break; default: @@ -2178,15 +2311,11 @@ static char *str_to_str(struct event_filter *filter, struct filter_arg *arg) static char *arg_to_str(struct event_filter *filter, struct filter_arg *arg) { - char *str; + char *str = NULL; switch (arg->type) { case FILTER_ARG_BOOLEAN: - str = malloc_or_die(6); - if (arg->boolean.value) - strcpy(str, "TRUE"); - else - strcpy(str, "FALSE"); + asprintf(&str, arg->boolean.value ? "TRUE" : "FALSE"); return str; case FILTER_ARG_OP: @@ -2221,7 +2350,7 @@ static char *arg_to_str(struct event_filter *filter, struct filter_arg *arg) * * Returns a string that displays the filter contents. * This string must be freed with free(str). - * NULL is returned if no filter is found. + * NULL is returned if no filter is found or allocation failed. */ char * pevent_filter_make_string(struct event_filter *filter, int event_id) diff --git a/tools/lib/traceevent/parse-utils.c b/tools/lib/traceevent/parse-utils.c index bba701cf10e..eda07fa31dc 100644 --- a/tools/lib/traceevent/parse-utils.c +++ b/tools/lib/traceevent/parse-utils.c @@ -25,40 +25,6 @@ #define __weak __attribute__((weak)) -void __vdie(const char *fmt, va_list ap) -{ - int ret = errno; - - if (errno) - perror("trace-cmd"); - else - ret = -1; - - fprintf(stderr, " "); - vfprintf(stderr, fmt, ap); - - fprintf(stderr, "\n"); - exit(ret); -} - -void __die(const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - __vdie(fmt, ap); - va_end(ap); -} - -void __weak die(const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - __vdie(fmt, ap); - va_end(ap); -} - void __vwarning(const char *fmt, va_list ap) { if (errno) @@ -117,13 +83,3 @@ void __weak pr_stat(const char *fmt, ...) __vpr_stat(fmt, ap); va_end(ap); } - -void __weak *malloc_or_die(unsigned int size) -{ - void *data; - - data = malloc(size); - if (!data) - die("malloc"); - return data; -} diff --git a/tools/lib/traceevent/plugin_cfg80211.c b/tools/lib/traceevent/plugin_cfg80211.c new file mode 100644 index 00000000000..c066b25905f --- /dev/null +++ b/tools/lib/traceevent/plugin_cfg80211.c @@ -0,0 +1,30 @@ +#include <stdio.h> +#include <string.h> +#include <inttypes.h> +#include <endian.h> +#include "event-parse.h" + +static unsigned long long +process___le16_to_cpup(struct trace_seq *s, + unsigned long long *args) +{ + uint16_t *val = (uint16_t *) (unsigned long) args[0]; + return val ? (long long) le16toh(*val) : 0; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_print_function(pevent, + process___le16_to_cpup, + PEVENT_FUNC_ARG_INT, + "__le16_to_cpup", + PEVENT_FUNC_ARG_PTR, + PEVENT_FUNC_ARG_VOID); + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + pevent_unregister_print_function(pevent, process___le16_to_cpup, + "__le16_to_cpup"); +} diff --git a/tools/lib/traceevent/plugin_function.c b/tools/lib/traceevent/plugin_function.c new file mode 100644 index 00000000000..a00ec190821 --- /dev/null +++ b/tools/lib/traceevent/plugin_function.c @@ -0,0 +1,194 @@ +/* + * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "event-parse.h" +#include "event-utils.h" + +static struct func_stack { + int size; + char **stack; +} *fstack; + +static int cpus = -1; + +#define STK_BLK 10 + +struct pevent_plugin_option plugin_options[] = +{ + { + .name = "parent", + .plugin_alias = "ftrace", + .description = + "Print parent of functions for function events", + }, + { + .name = "indent", + .plugin_alias = "ftrace", + .description = + "Try to show function call indents, based on parents", + .set = 1, + }, + { + .name = NULL, + } +}; + +static struct pevent_plugin_option *ftrace_parent = &plugin_options[0]; +static struct pevent_plugin_option *ftrace_indent = &plugin_options[1]; + +static void add_child(struct func_stack *stack, const char *child, int pos) +{ + int i; + + if (!child) + return; + + if (pos < stack->size) + free(stack->stack[pos]); + else { + char **ptr; + + ptr = realloc(stack->stack, sizeof(char *) * + (stack->size + STK_BLK)); + if (!ptr) { + warning("could not allocate plugin memory\n"); + return; + } + + stack->stack = ptr; + + for (i = stack->size; i < stack->size + STK_BLK; i++) + stack->stack[i] = NULL; + stack->size += STK_BLK; + } + + stack->stack[pos] = strdup(child); +} + +static int add_and_get_index(const char *parent, const char *child, int cpu) +{ + int i; + + if (cpu < 0) + return 0; + + if (cpu > cpus) { + struct func_stack *ptr; + + ptr = realloc(fstack, sizeof(*fstack) * (cpu + 1)); + if (!ptr) { + warning("could not allocate plugin memory\n"); + return 0; + } + + fstack = ptr; + + /* Account for holes in the cpu count */ + for (i = cpus + 1; i <= cpu; i++) + memset(&fstack[i], 0, sizeof(fstack[i])); + cpus = cpu; + } + + for (i = 0; i < fstack[cpu].size && fstack[cpu].stack[i]; i++) { + if (strcmp(parent, fstack[cpu].stack[i]) == 0) { + add_child(&fstack[cpu], child, i+1); + return i; + } + } + + /* Not found */ + add_child(&fstack[cpu], parent, 0); + add_child(&fstack[cpu], child, 1); + return 0; +} + +static int function_handler(struct trace_seq *s, struct pevent_record *record, + struct event_format *event, void *context) +{ + struct pevent *pevent = event->pevent; + unsigned long long function; + unsigned long long pfunction; + const char *func; + const char *parent; + int index; + + if (pevent_get_field_val(s, event, "ip", record, &function, 1)) + return trace_seq_putc(s, '!'); + + func = pevent_find_function(pevent, function); + + if (pevent_get_field_val(s, event, "parent_ip", record, &pfunction, 1)) + return trace_seq_putc(s, '!'); + + parent = pevent_find_function(pevent, pfunction); + + if (parent && ftrace_indent->set) + index = add_and_get_index(parent, func, record->cpu); + + trace_seq_printf(s, "%*s", index*3, ""); + + if (func) + trace_seq_printf(s, "%s", func); + else + trace_seq_printf(s, "0x%llx", function); + + if (ftrace_parent->set) { + trace_seq_printf(s, " <-- "); + if (parent) + trace_seq_printf(s, "%s", parent); + else + trace_seq_printf(s, "0x%llx", pfunction); + } + + return 0; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_event_handler(pevent, -1, "ftrace", "function", + function_handler, NULL); + + traceevent_plugin_add_options("ftrace", plugin_options); + + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + int i, x; + + pevent_unregister_event_handler(pevent, -1, "ftrace", "function", + function_handler, NULL); + + for (i = 0; i <= cpus; i++) { + for (x = 0; x < fstack[i].size && fstack[i].stack[x]; x++) + free(fstack[i].stack[x]); + free(fstack[i].stack); + } + + traceevent_plugin_remove_options(plugin_options); + + free(fstack); + fstack = NULL; + cpus = -1; +} diff --git a/tools/lib/traceevent/plugin_hrtimer.c b/tools/lib/traceevent/plugin_hrtimer.c new file mode 100644 index 00000000000..12bf14cc115 --- /dev/null +++ b/tools/lib/traceevent/plugin_hrtimer.c @@ -0,0 +1,88 @@ +/* + * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> + * Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "event-parse.h" + +static int timer_expire_handler(struct trace_seq *s, + struct pevent_record *record, + struct event_format *event, void *context) +{ + trace_seq_printf(s, "hrtimer="); + + if (pevent_print_num_field(s, "0x%llx", event, "timer", + record, 0) == -1) + pevent_print_num_field(s, "0x%llx", event, "hrtimer", + record, 1); + + trace_seq_printf(s, " now="); + + pevent_print_num_field(s, "%llu", event, "now", record, 1); + + pevent_print_func_field(s, " function=%s", event, "function", + record, 0); + return 0; +} + +static int timer_start_handler(struct trace_seq *s, + struct pevent_record *record, + struct event_format *event, void *context) +{ + trace_seq_printf(s, "hrtimer="); + + if (pevent_print_num_field(s, "0x%llx", event, "timer", + record, 0) == -1) + pevent_print_num_field(s, "0x%llx", event, "hrtimer", + record, 1); + + pevent_print_func_field(s, " function=%s", event, "function", + record, 0); + + trace_seq_printf(s, " expires="); + pevent_print_num_field(s, "%llu", event, "expires", record, 1); + + trace_seq_printf(s, " softexpires="); + pevent_print_num_field(s, "%llu", event, "softexpires", record, 1); + return 0; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_event_handler(pevent, -1, + "timer", "hrtimer_expire_entry", + timer_expire_handler, NULL); + + pevent_register_event_handler(pevent, -1, "timer", "hrtimer_start", + timer_start_handler, NULL); + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + pevent_unregister_event_handler(pevent, -1, + "timer", "hrtimer_expire_entry", + timer_expire_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "timer", "hrtimer_start", + timer_start_handler, NULL); +} diff --git a/tools/lib/traceevent/plugin_jbd2.c b/tools/lib/traceevent/plugin_jbd2.c new file mode 100644 index 00000000000..0db714c721b --- /dev/null +++ b/tools/lib/traceevent/plugin_jbd2.c @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "event-parse.h" + +#define MINORBITS 20 +#define MINORMASK ((1U << MINORBITS) - 1) + +#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) +#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK)) + +static unsigned long long +process_jbd2_dev_to_name(struct trace_seq *s, + unsigned long long *args) +{ + unsigned int dev = args[0]; + + trace_seq_printf(s, "%d:%d", MAJOR(dev), MINOR(dev)); + return 0; +} + +static unsigned long long +process_jiffies_to_msecs(struct trace_seq *s, + unsigned long long *args) +{ + unsigned long long jiffies = args[0]; + + trace_seq_printf(s, "%lld", jiffies); + return jiffies; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_print_function(pevent, + process_jbd2_dev_to_name, + PEVENT_FUNC_ARG_STRING, + "jbd2_dev_to_name", + PEVENT_FUNC_ARG_INT, + PEVENT_FUNC_ARG_VOID); + + pevent_register_print_function(pevent, + process_jiffies_to_msecs, + PEVENT_FUNC_ARG_LONG, + "jiffies_to_msecs", + PEVENT_FUNC_ARG_LONG, + PEVENT_FUNC_ARG_VOID); + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + pevent_unregister_print_function(pevent, process_jbd2_dev_to_name, + "jbd2_dev_to_name"); + + pevent_unregister_print_function(pevent, process_jiffies_to_msecs, + "jiffies_to_msecs"); +} diff --git a/tools/lib/traceevent/plugin_kmem.c b/tools/lib/traceevent/plugin_kmem.c new file mode 100644 index 00000000000..70650ff48d7 --- /dev/null +++ b/tools/lib/traceevent/plugin_kmem.c @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "event-parse.h" + +static int call_site_handler(struct trace_seq *s, struct pevent_record *record, + struct event_format *event, void *context) +{ + struct format_field *field; + unsigned long long val, addr; + void *data = record->data; + const char *func; + + field = pevent_find_field(event, "call_site"); + if (!field) + return 1; + + if (pevent_read_number_field(field, data, &val)) + return 1; + + func = pevent_find_function(event->pevent, val); + if (!func) + return 1; + + addr = pevent_find_function_address(event->pevent, val); + + trace_seq_printf(s, "(%s+0x%x) ", func, (int)(val - addr)); + return 1; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_event_handler(pevent, -1, "kmem", "kfree", + call_site_handler, NULL); + + pevent_register_event_handler(pevent, -1, "kmem", "kmalloc", + call_site_handler, NULL); + + pevent_register_event_handler(pevent, -1, "kmem", "kmalloc_node", + call_site_handler, NULL); + + pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", + call_site_handler, NULL); + + pevent_register_event_handler(pevent, -1, "kmem", + "kmem_cache_alloc_node", + call_site_handler, NULL); + + pevent_register_event_handler(pevent, -1, "kmem", "kmem_cache_free", + call_site_handler, NULL); + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + pevent_unregister_event_handler(pevent, -1, "kmem", "kfree", + call_site_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc", + call_site_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "kmem", "kmalloc_node", + call_site_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_alloc", + call_site_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "kmem", + "kmem_cache_alloc_node", + call_site_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "kmem", "kmem_cache_free", + call_site_handler, NULL); +} diff --git a/tools/lib/traceevent/plugin_kvm.c b/tools/lib/traceevent/plugin_kvm.c new file mode 100644 index 00000000000..9e0e8c61b43 --- /dev/null +++ b/tools/lib/traceevent/plugin_kvm.c @@ -0,0 +1,465 @@ +/* + * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdint.h> + +#include "event-parse.h" + +#ifdef HAVE_UDIS86 + +#include <udis86.h> + +static ud_t ud; + +static void init_disassembler(void) +{ + ud_init(&ud); + ud_set_syntax(&ud, UD_SYN_ATT); +} + +static const char *disassemble(unsigned char *insn, int len, uint64_t rip, + int cr0_pe, int eflags_vm, + int cs_d, int cs_l) +{ + int mode; + + if (!cr0_pe) + mode = 16; + else if (eflags_vm) + mode = 16; + else if (cs_l) + mode = 64; + else if (cs_d) + mode = 32; + else + mode = 16; + + ud_set_pc(&ud, rip); + ud_set_mode(&ud, mode); + ud_set_input_buffer(&ud, insn, len); + ud_disassemble(&ud); + return ud_insn_asm(&ud); +} + +#else + +static void init_disassembler(void) +{ +} + +static const char *disassemble(unsigned char *insn, int len, uint64_t rip, + int cr0_pe, int eflags_vm, + int cs_d, int cs_l) +{ + static char out[15*3+1]; + int i; + + for (i = 0; i < len; ++i) + sprintf(out + i * 3, "%02x ", insn[i]); + out[len*3-1] = '\0'; + return out; +} + +#endif + + +#define VMX_EXIT_REASONS \ + _ER(EXCEPTION_NMI, 0) \ + _ER(EXTERNAL_INTERRUPT, 1) \ + _ER(TRIPLE_FAULT, 2) \ + _ER(PENDING_INTERRUPT, 7) \ + _ER(NMI_WINDOW, 8) \ + _ER(TASK_SWITCH, 9) \ + _ER(CPUID, 10) \ + _ER(HLT, 12) \ + _ER(INVD, 13) \ + _ER(INVLPG, 14) \ + _ER(RDPMC, 15) \ + _ER(RDTSC, 16) \ + _ER(VMCALL, 18) \ + _ER(VMCLEAR, 19) \ + _ER(VMLAUNCH, 20) \ + _ER(VMPTRLD, 21) \ + _ER(VMPTRST, 22) \ + _ER(VMREAD, 23) \ + _ER(VMRESUME, 24) \ + _ER(VMWRITE, 25) \ + _ER(VMOFF, 26) \ + _ER(VMON, 27) \ + _ER(CR_ACCESS, 28) \ + _ER(DR_ACCESS, 29) \ + _ER(IO_INSTRUCTION, 30) \ + _ER(MSR_READ, 31) \ + _ER(MSR_WRITE, 32) \ + _ER(MWAIT_INSTRUCTION, 36) \ + _ER(MONITOR_INSTRUCTION, 39) \ + _ER(PAUSE_INSTRUCTION, 40) \ + _ER(MCE_DURING_VMENTRY, 41) \ + _ER(TPR_BELOW_THRESHOLD, 43) \ + _ER(APIC_ACCESS, 44) \ + _ER(EOI_INDUCED, 45) \ + _ER(EPT_VIOLATION, 48) \ + _ER(EPT_MISCONFIG, 49) \ + _ER(INVEPT, 50) \ + _ER(PREEMPTION_TIMER, 52) \ + _ER(WBINVD, 54) \ + _ER(XSETBV, 55) \ + _ER(APIC_WRITE, 56) \ + _ER(INVPCID, 58) + +#define SVM_EXIT_REASONS \ + _ER(EXIT_READ_CR0, 0x000) \ + _ER(EXIT_READ_CR3, 0x003) \ + _ER(EXIT_READ_CR4, 0x004) \ + _ER(EXIT_READ_CR8, 0x008) \ + _ER(EXIT_WRITE_CR0, 0x010) \ + _ER(EXIT_WRITE_CR3, 0x013) \ + _ER(EXIT_WRITE_CR4, 0x014) \ + _ER(EXIT_WRITE_CR8, 0x018) \ + _ER(EXIT_READ_DR0, 0x020) \ + _ER(EXIT_READ_DR1, 0x021) \ + _ER(EXIT_READ_DR2, 0x022) \ + _ER(EXIT_READ_DR3, 0x023) \ + _ER(EXIT_READ_DR4, 0x024) \ + _ER(EXIT_READ_DR5, 0x025) \ + _ER(EXIT_READ_DR6, 0x026) \ + _ER(EXIT_READ_DR7, 0x027) \ + _ER(EXIT_WRITE_DR0, 0x030) \ + _ER(EXIT_WRITE_DR1, 0x031) \ + _ER(EXIT_WRITE_DR2, 0x032) \ + _ER(EXIT_WRITE_DR3, 0x033) \ + _ER(EXIT_WRITE_DR4, 0x034) \ + _ER(EXIT_WRITE_DR5, 0x035) \ + _ER(EXIT_WRITE_DR6, 0x036) \ + _ER(EXIT_WRITE_DR7, 0x037) \ + _ER(EXIT_EXCP_BASE, 0x040) \ + _ER(EXIT_INTR, 0x060) \ + _ER(EXIT_NMI, 0x061) \ + _ER(EXIT_SMI, 0x062) \ + _ER(EXIT_INIT, 0x063) \ + _ER(EXIT_VINTR, 0x064) \ + _ER(EXIT_CR0_SEL_WRITE, 0x065) \ + _ER(EXIT_IDTR_READ, 0x066) \ + _ER(EXIT_GDTR_READ, 0x067) \ + _ER(EXIT_LDTR_READ, 0x068) \ + _ER(EXIT_TR_READ, 0x069) \ + _ER(EXIT_IDTR_WRITE, 0x06a) \ + _ER(EXIT_GDTR_WRITE, 0x06b) \ + _ER(EXIT_LDTR_WRITE, 0x06c) \ + _ER(EXIT_TR_WRITE, 0x06d) \ + _ER(EXIT_RDTSC, 0x06e) \ + _ER(EXIT_RDPMC, 0x06f) \ + _ER(EXIT_PUSHF, 0x070) \ + _ER(EXIT_POPF, 0x071) \ + _ER(EXIT_CPUID, 0x072) \ + _ER(EXIT_RSM, 0x073) \ + _ER(EXIT_IRET, 0x074) \ + _ER(EXIT_SWINT, 0x075) \ + _ER(EXIT_INVD, 0x076) \ + _ER(EXIT_PAUSE, 0x077) \ + _ER(EXIT_HLT, 0x078) \ + _ER(EXIT_INVLPG, 0x079) \ + _ER(EXIT_INVLPGA, 0x07a) \ + _ER(EXIT_IOIO, 0x07b) \ + _ER(EXIT_MSR, 0x07c) \ + _ER(EXIT_TASK_SWITCH, 0x07d) \ + _ER(EXIT_FERR_FREEZE, 0x07e) \ + _ER(EXIT_SHUTDOWN, 0x07f) \ + _ER(EXIT_VMRUN, 0x080) \ + _ER(EXIT_VMMCALL, 0x081) \ + _ER(EXIT_VMLOAD, 0x082) \ + _ER(EXIT_VMSAVE, 0x083) \ + _ER(EXIT_STGI, 0x084) \ + _ER(EXIT_CLGI, 0x085) \ + _ER(EXIT_SKINIT, 0x086) \ + _ER(EXIT_RDTSCP, 0x087) \ + _ER(EXIT_ICEBP, 0x088) \ + _ER(EXIT_WBINVD, 0x089) \ + _ER(EXIT_MONITOR, 0x08a) \ + _ER(EXIT_MWAIT, 0x08b) \ + _ER(EXIT_MWAIT_COND, 0x08c) \ + _ER(EXIT_NPF, 0x400) \ + _ER(EXIT_ERR, -1) + +#define _ER(reason, val) { #reason, val }, +struct str_values { + const char *str; + int val; +}; + +static struct str_values vmx_exit_reasons[] = { + VMX_EXIT_REASONS + { NULL, -1} +}; + +static struct str_values svm_exit_reasons[] = { + SVM_EXIT_REASONS + { NULL, -1} +}; + +static struct isa_exit_reasons { + unsigned isa; + struct str_values *strings; +} isa_exit_reasons[] = { + { .isa = 1, .strings = vmx_exit_reasons }, + { .isa = 2, .strings = svm_exit_reasons }, + { } +}; + +static const char *find_exit_reason(unsigned isa, int val) +{ + struct str_values *strings = NULL; + int i; + + for (i = 0; isa_exit_reasons[i].strings; ++i) + if (isa_exit_reasons[i].isa == isa) { + strings = isa_exit_reasons[i].strings; + break; + } + if (!strings) + return "UNKNOWN-ISA"; + for (i = 0; strings[i].val >= 0; i++) + if (strings[i].val == val) + break; + if (strings[i].str) + return strings[i].str; + return "UNKNOWN"; +} + +static int kvm_exit_handler(struct trace_seq *s, struct pevent_record *record, + struct event_format *event, void *context) +{ + unsigned long long isa; + unsigned long long val; + unsigned long long info1 = 0, info2 = 0; + + if (pevent_get_field_val(s, event, "exit_reason", record, &val, 1) < 0) + return -1; + + if (pevent_get_field_val(s, event, "isa", record, &isa, 0) < 0) + isa = 1; + + trace_seq_printf(s, "reason %s", find_exit_reason(isa, val)); + + pevent_print_num_field(s, " rip 0x%lx", event, "guest_rip", record, 1); + + if (pevent_get_field_val(s, event, "info1", record, &info1, 0) >= 0 + && pevent_get_field_val(s, event, "info2", record, &info2, 0) >= 0) + trace_seq_printf(s, " info %llx %llx", info1, info2); + + return 0; +} + +#define KVM_EMUL_INSN_F_CR0_PE (1 << 0) +#define KVM_EMUL_INSN_F_EFL_VM (1 << 1) +#define KVM_EMUL_INSN_F_CS_D (1 << 2) +#define KVM_EMUL_INSN_F_CS_L (1 << 3) + +static int kvm_emulate_insn_handler(struct trace_seq *s, + struct pevent_record *record, + struct event_format *event, void *context) +{ + unsigned long long rip, csbase, len, flags, failed; + int llen; + uint8_t *insn; + const char *disasm; + + if (pevent_get_field_val(s, event, "rip", record, &rip, 1) < 0) + return -1; + + if (pevent_get_field_val(s, event, "csbase", record, &csbase, 1) < 0) + return -1; + + if (pevent_get_field_val(s, event, "len", record, &len, 1) < 0) + return -1; + + if (pevent_get_field_val(s, event, "flags", record, &flags, 1) < 0) + return -1; + + if (pevent_get_field_val(s, event, "failed", record, &failed, 1) < 0) + return -1; + + insn = pevent_get_field_raw(s, event, "insn", record, &llen, 1); + if (!insn) + return -1; + + disasm = disassemble(insn, len, rip, + flags & KVM_EMUL_INSN_F_CR0_PE, + flags & KVM_EMUL_INSN_F_EFL_VM, + flags & KVM_EMUL_INSN_F_CS_D, + flags & KVM_EMUL_INSN_F_CS_L); + + trace_seq_printf(s, "%llx:%llx: %s%s", csbase, rip, disasm, + failed ? " FAIL" : ""); + return 0; +} + +union kvm_mmu_page_role { + unsigned word; + struct { + unsigned glevels:4; + unsigned level:4; + unsigned quadrant:2; + unsigned pad_for_nice_hex_output:6; + unsigned direct:1; + unsigned access:3; + unsigned invalid:1; + unsigned cr4_pge:1; + unsigned nxe:1; + }; +}; + +static int kvm_mmu_print_role(struct trace_seq *s, struct pevent_record *record, + struct event_format *event, void *context) +{ + unsigned long long val; + static const char *access_str[] = { + "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux" + }; + union kvm_mmu_page_role role; + + if (pevent_get_field_val(s, event, "role", record, &val, 1) < 0) + return -1; + + role.word = (int)val; + + /* + * We can only use the structure if file is of the same + * endianess. + */ + if (pevent_is_file_bigendian(event->pevent) == + pevent_is_host_bigendian(event->pevent)) { + + trace_seq_printf(s, "%u/%u q%u%s %s%s %spge %snxe", + role.level, + role.glevels, + role.quadrant, + role.direct ? " direct" : "", + access_str[role.access], + role.invalid ? " invalid" : "", + role.cr4_pge ? "" : "!", + role.nxe ? "" : "!"); + } else + trace_seq_printf(s, "WORD: %08x", role.word); + + pevent_print_num_field(s, " root %u ", event, + "root_count", record, 1); + + if (pevent_get_field_val(s, event, "unsync", record, &val, 1) < 0) + return -1; + + trace_seq_printf(s, "%s%c", val ? "unsync" : "sync", 0); + return 0; +} + +static int kvm_mmu_get_page_handler(struct trace_seq *s, + struct pevent_record *record, + struct event_format *event, void *context) +{ + unsigned long long val; + + if (pevent_get_field_val(s, event, "created", record, &val, 1) < 0) + return -1; + + trace_seq_printf(s, "%s ", val ? "new" : "existing"); + + if (pevent_get_field_val(s, event, "gfn", record, &val, 1) < 0) + return -1; + + trace_seq_printf(s, "sp gfn %llx ", val); + return kvm_mmu_print_role(s, record, event, context); +} + +#define PT_WRITABLE_SHIFT 1 +#define PT_WRITABLE_MASK (1ULL << PT_WRITABLE_SHIFT) + +static unsigned long long +process_is_writable_pte(struct trace_seq *s, unsigned long long *args) +{ + unsigned long pte = args[0]; + return pte & PT_WRITABLE_MASK; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + init_disassembler(); + + pevent_register_event_handler(pevent, -1, "kvm", "kvm_exit", + kvm_exit_handler, NULL); + + pevent_register_event_handler(pevent, -1, "kvm", "kvm_emulate_insn", + kvm_emulate_insn_handler, NULL); + + pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_get_page", + kvm_mmu_get_page_handler, NULL); + + pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_sync_page", + kvm_mmu_print_role, NULL); + + pevent_register_event_handler(pevent, -1, + "kvmmmu", "kvm_mmu_unsync_page", + kvm_mmu_print_role, NULL); + + pevent_register_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_zap_page", + kvm_mmu_print_role, NULL); + + pevent_register_event_handler(pevent, -1, "kvmmmu", + "kvm_mmu_prepare_zap_page", kvm_mmu_print_role, + NULL); + + pevent_register_print_function(pevent, + process_is_writable_pte, + PEVENT_FUNC_ARG_INT, + "is_writable_pte", + PEVENT_FUNC_ARG_LONG, + PEVENT_FUNC_ARG_VOID); + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_exit", + kvm_exit_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "kvm", "kvm_emulate_insn", + kvm_emulate_insn_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_get_page", + kvm_mmu_get_page_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_sync_page", + kvm_mmu_print_role, NULL); + + pevent_unregister_event_handler(pevent, -1, + "kvmmmu", "kvm_mmu_unsync_page", + kvm_mmu_print_role, NULL); + + pevent_unregister_event_handler(pevent, -1, "kvmmmu", "kvm_mmu_zap_page", + kvm_mmu_print_role, NULL); + + pevent_unregister_event_handler(pevent, -1, "kvmmmu", + "kvm_mmu_prepare_zap_page", kvm_mmu_print_role, + NULL); + + pevent_unregister_print_function(pevent, process_is_writable_pte, + "is_writable_pte"); +} diff --git a/tools/lib/traceevent/plugin_mac80211.c b/tools/lib/traceevent/plugin_mac80211.c new file mode 100644 index 00000000000..7e15a0f1c2f --- /dev/null +++ b/tools/lib/traceevent/plugin_mac80211.c @@ -0,0 +1,102 @@ +/* + * Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "event-parse.h" + +#define INDENT 65 + +static void print_string(struct trace_seq *s, struct event_format *event, + const char *name, const void *data) +{ + struct format_field *f = pevent_find_field(event, name); + int offset; + int length; + + if (!f) { + trace_seq_printf(s, "NOTFOUND:%s", name); + return; + } + + offset = f->offset; + length = f->size; + + if (!strncmp(f->type, "__data_loc", 10)) { + unsigned long long v; + if (pevent_read_number_field(f, data, &v)) { + trace_seq_printf(s, "invalid_data_loc"); + return; + } + offset = v & 0xffff; + length = v >> 16; + } + + trace_seq_printf(s, "%.*s", length, (char *)data + offset); +} + +#define SF(fn) pevent_print_num_field(s, fn ":%d", event, fn, record, 0) +#define SFX(fn) pevent_print_num_field(s, fn ":%#x", event, fn, record, 0) +#define SP() trace_seq_putc(s, ' ') + +static int drv_bss_info_changed(struct trace_seq *s, + struct pevent_record *record, + struct event_format *event, void *context) +{ + void *data = record->data; + + print_string(s, event, "wiphy_name", data); + trace_seq_printf(s, " vif:"); + print_string(s, event, "vif_name", data); + pevent_print_num_field(s, "(%d)", event, "vif_type", record, 1); + + trace_seq_printf(s, "\n%*s", INDENT, ""); + SF("assoc"); SP(); + SF("aid"); SP(); + SF("cts"); SP(); + SF("shortpre"); SP(); + SF("shortslot"); SP(); + SF("dtimper"); SP(); + trace_seq_printf(s, "\n%*s", INDENT, ""); + SF("bcnint"); SP(); + SFX("assoc_cap"); SP(); + SFX("basic_rates"); SP(); + SF("enable_beacon"); + trace_seq_printf(s, "\n%*s", INDENT, ""); + SF("ht_operation_mode"); + + return 0; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_event_handler(pevent, -1, "mac80211", + "drv_bss_info_changed", + drv_bss_info_changed, NULL); + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + pevent_unregister_event_handler(pevent, -1, "mac80211", + "drv_bss_info_changed", + drv_bss_info_changed, NULL); +} diff --git a/tools/lib/traceevent/plugin_sched_switch.c b/tools/lib/traceevent/plugin_sched_switch.c new file mode 100644 index 00000000000..f1ce6006525 --- /dev/null +++ b/tools/lib/traceevent/plugin_sched_switch.c @@ -0,0 +1,160 @@ +/* + * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License (not later!) + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this program; if not, see <http://www.gnu.org/licenses> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "event-parse.h" + +static void write_state(struct trace_seq *s, int val) +{ + const char states[] = "SDTtZXxW"; + int found = 0; + int i; + + for (i = 0; i < (sizeof(states) - 1); i++) { + if (!(val & (1 << i))) + continue; + + if (found) + trace_seq_putc(s, '|'); + + found = 1; + trace_seq_putc(s, states[i]); + } + + if (!found) + trace_seq_putc(s, 'R'); +} + +static void write_and_save_comm(struct format_field *field, + struct pevent_record *record, + struct trace_seq *s, int pid) +{ + const char *comm; + int len; + + comm = (char *)(record->data + field->offset); + len = s->len; + trace_seq_printf(s, "%.*s", + field->size, comm); + + /* make sure the comm has a \0 at the end. */ + trace_seq_terminate(s); + comm = &s->buffer[len]; + + /* Help out the comm to ids. This will handle dups */ + pevent_register_comm(field->event->pevent, comm, pid); +} + +static int sched_wakeup_handler(struct trace_seq *s, + struct pevent_record *record, + struct event_format *event, void *context) +{ + struct format_field *field; + unsigned long long val; + + if (pevent_get_field_val(s, event, "pid", record, &val, 1)) + return trace_seq_putc(s, '!'); + + field = pevent_find_any_field(event, "comm"); + if (field) { + write_and_save_comm(field, record, s, val); + trace_seq_putc(s, ':'); + } + trace_seq_printf(s, "%lld", val); + + if (pevent_get_field_val(s, event, "prio", record, &val, 0) == 0) + trace_seq_printf(s, " [%lld]", val); + + if (pevent_get_field_val(s, event, "success", record, &val, 1) == 0) + trace_seq_printf(s, " success=%lld", val); + + if (pevent_get_field_val(s, event, "target_cpu", record, &val, 0) == 0) + trace_seq_printf(s, " CPU:%03llu", val); + + return 0; +} + +static int sched_switch_handler(struct trace_seq *s, + struct pevent_record *record, + struct event_format *event, void *context) +{ + struct format_field *field; + unsigned long long val; + + if (pevent_get_field_val(s, event, "prev_pid", record, &val, 1)) + return trace_seq_putc(s, '!'); + + field = pevent_find_any_field(event, "prev_comm"); + if (field) { + write_and_save_comm(field, record, s, val); + trace_seq_putc(s, ':'); + } + trace_seq_printf(s, "%lld ", val); + + if (pevent_get_field_val(s, event, "prev_prio", record, &val, 0) == 0) + trace_seq_printf(s, "[%lld] ", val); + + if (pevent_get_field_val(s, event, "prev_state", record, &val, 0) == 0) + write_state(s, val); + + trace_seq_puts(s, " ==> "); + + if (pevent_get_field_val(s, event, "next_pid", record, &val, 1)) + return trace_seq_putc(s, '!'); + + field = pevent_find_any_field(event, "next_comm"); + if (field) { + write_and_save_comm(field, record, s, val); + trace_seq_putc(s, ':'); + } + trace_seq_printf(s, "%lld", val); + + if (pevent_get_field_val(s, event, "next_prio", record, &val, 0) == 0) + trace_seq_printf(s, " [%lld]", val); + + return 0; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_event_handler(pevent, -1, "sched", "sched_switch", + sched_switch_handler, NULL); + + pevent_register_event_handler(pevent, -1, "sched", "sched_wakeup", + sched_wakeup_handler, NULL); + + pevent_register_event_handler(pevent, -1, "sched", "sched_wakeup_new", + sched_wakeup_handler, NULL); + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + pevent_unregister_event_handler(pevent, -1, "sched", "sched_switch", + sched_switch_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "sched", "sched_wakeup", + sched_wakeup_handler, NULL); + + pevent_unregister_event_handler(pevent, -1, "sched", "sched_wakeup_new", + sched_wakeup_handler, NULL); +} diff --git a/tools/lib/traceevent/plugin_scsi.c b/tools/lib/traceevent/plugin_scsi.c new file mode 100644 index 00000000000..eda326fc862 --- /dev/null +++ b/tools/lib/traceevent/plugin_scsi.c @@ -0,0 +1,429 @@ +#include <stdio.h> +#include <string.h> +#include <inttypes.h> +#include "event-parse.h" + +typedef unsigned long sector_t; +typedef uint64_t u64; +typedef unsigned int u32; + +/* + * SCSI opcodes + */ +#define TEST_UNIT_READY 0x00 +#define REZERO_UNIT 0x01 +#define REQUEST_SENSE 0x03 +#define FORMAT_UNIT 0x04 +#define READ_BLOCK_LIMITS 0x05 +#define REASSIGN_BLOCKS 0x07 +#define INITIALIZE_ELEMENT_STATUS 0x07 +#define READ_6 0x08 +#define WRITE_6 0x0a +#define SEEK_6 0x0b +#define READ_REVERSE 0x0f +#define WRITE_FILEMARKS 0x10 +#define SPACE 0x11 +#define INQUIRY 0x12 +#define RECOVER_BUFFERED_DATA 0x14 +#define MODE_SELECT 0x15 +#define RESERVE 0x16 +#define RELEASE 0x17 +#define COPY 0x18 +#define ERASE 0x19 +#define MODE_SENSE 0x1a +#define START_STOP 0x1b +#define RECEIVE_DIAGNOSTIC 0x1c +#define SEND_DIAGNOSTIC 0x1d +#define ALLOW_MEDIUM_REMOVAL 0x1e + +#define READ_FORMAT_CAPACITIES 0x23 +#define SET_WINDOW 0x24 +#define READ_CAPACITY 0x25 +#define READ_10 0x28 +#define WRITE_10 0x2a +#define SEEK_10 0x2b +#define POSITION_TO_ELEMENT 0x2b +#define WRITE_VERIFY 0x2e +#define VERIFY 0x2f +#define SEARCH_HIGH 0x30 +#define SEARCH_EQUAL 0x31 +#define SEARCH_LOW 0x32 +#define SET_LIMITS 0x33 +#define PRE_FETCH 0x34 +#define READ_POSITION 0x34 +#define SYNCHRONIZE_CACHE 0x35 +#define LOCK_UNLOCK_CACHE 0x36 +#define READ_DEFECT_DATA 0x37 +#define MEDIUM_SCAN 0x38 +#define COMPARE 0x39 +#define COPY_VERIFY 0x3a +#define WRITE_BUFFER 0x3b +#define READ_BUFFER 0x3c +#define UPDATE_BLOCK 0x3d +#define READ_LONG 0x3e +#define WRITE_LONG 0x3f +#define CHANGE_DEFINITION 0x40 +#define WRITE_SAME 0x41 +#define UNMAP 0x42 +#define READ_TOC 0x43 +#define READ_HEADER 0x44 +#define GET_EVENT_STATUS_NOTIFICATION 0x4a +#define LOG_SELECT 0x4c +#define LOG_SENSE 0x4d +#define XDWRITEREAD_10 0x53 +#define MODE_SELECT_10 0x55 +#define RESERVE_10 0x56 +#define RELEASE_10 0x57 +#define MODE_SENSE_10 0x5a +#define PERSISTENT_RESERVE_IN 0x5e +#define PERSISTENT_RESERVE_OUT 0x5f +#define VARIABLE_LENGTH_CMD 0x7f +#define REPORT_LUNS 0xa0 +#define SECURITY_PROTOCOL_IN 0xa2 +#define MAINTENANCE_IN 0xa3 +#define MAINTENANCE_OUT 0xa4 +#define MOVE_MEDIUM 0xa5 +#define EXCHANGE_MEDIUM 0xa6 +#define READ_12 0xa8 +#define WRITE_12 0xaa +#define READ_MEDIA_SERIAL_NUMBER 0xab +#define WRITE_VERIFY_12 0xae +#define VERIFY_12 0xaf +#define SEARCH_HIGH_12 0xb0 +#define SEARCH_EQUAL_12 0xb1 +#define SEARCH_LOW_12 0xb2 +#define SECURITY_PROTOCOL_OUT 0xb5 +#define READ_ELEMENT_STATUS 0xb8 +#define SEND_VOLUME_TAG 0xb6 +#define WRITE_LONG_2 0xea +#define EXTENDED_COPY 0x83 +#define RECEIVE_COPY_RESULTS 0x84 +#define ACCESS_CONTROL_IN 0x86 +#define ACCESS_CONTROL_OUT 0x87 +#define READ_16 0x88 +#define WRITE_16 0x8a +#define READ_ATTRIBUTE 0x8c +#define WRITE_ATTRIBUTE 0x8d +#define VERIFY_16 0x8f +#define SYNCHRONIZE_CACHE_16 0x91 +#define WRITE_SAME_16 0x93 +#define SERVICE_ACTION_IN 0x9e +/* values for service action in */ +#define SAI_READ_CAPACITY_16 0x10 +#define SAI_GET_LBA_STATUS 0x12 +/* values for VARIABLE_LENGTH_CMD service action codes + * see spc4r17 Section D.3.5, table D.7 and D.8 */ +#define VLC_SA_RECEIVE_CREDENTIAL 0x1800 +/* values for maintenance in */ +#define MI_REPORT_IDENTIFYING_INFORMATION 0x05 +#define MI_REPORT_TARGET_PGS 0x0a +#define MI_REPORT_ALIASES 0x0b +#define MI_REPORT_SUPPORTED_OPERATION_CODES 0x0c +#define MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS 0x0d +#define MI_REPORT_PRIORITY 0x0e +#define MI_REPORT_TIMESTAMP 0x0f +#define MI_MANAGEMENT_PROTOCOL_IN 0x10 +/* value for MI_REPORT_TARGET_PGS ext header */ +#define MI_EXT_HDR_PARAM_FMT 0x20 +/* values for maintenance out */ +#define MO_SET_IDENTIFYING_INFORMATION 0x06 +#define MO_SET_TARGET_PGS 0x0a +#define MO_CHANGE_ALIASES 0x0b +#define MO_SET_PRIORITY 0x0e +#define MO_SET_TIMESTAMP 0x0f +#define MO_MANAGEMENT_PROTOCOL_OUT 0x10 +/* values for variable length command */ +#define XDREAD_32 0x03 +#define XDWRITE_32 0x04 +#define XPWRITE_32 0x06 +#define XDWRITEREAD_32 0x07 +#define READ_32 0x09 +#define VERIFY_32 0x0a +#define WRITE_32 0x0b +#define WRITE_SAME_32 0x0d + +#define SERVICE_ACTION16(cdb) (cdb[1] & 0x1f) +#define SERVICE_ACTION32(cdb) ((cdb[8] << 8) | cdb[9]) + +static const char * +scsi_trace_misc(struct trace_seq *, unsigned char *, int); + +static const char * +scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len) +{ + const char *ret = p->buffer + p->len; + sector_t lba = 0, txlen = 0; + + lba |= ((cdb[1] & 0x1F) << 16); + lba |= (cdb[2] << 8); + lba |= cdb[3]; + txlen = cdb[4]; + + trace_seq_printf(p, "lba=%llu txlen=%llu", + (unsigned long long)lba, (unsigned long long)txlen); + trace_seq_putc(p, 0); + return ret; +} + +static const char * +scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len) +{ + const char *ret = p->buffer + p->len; + sector_t lba = 0, txlen = 0; + + lba |= (cdb[2] << 24); + lba |= (cdb[3] << 16); + lba |= (cdb[4] << 8); + lba |= cdb[5]; + txlen |= (cdb[7] << 8); + txlen |= cdb[8]; + + trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", + (unsigned long long)lba, (unsigned long long)txlen, + cdb[1] >> 5); + + if (cdb[0] == WRITE_SAME) + trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); + + trace_seq_putc(p, 0); + return ret; +} + +static const char * +scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len) +{ + const char *ret = p->buffer + p->len; + sector_t lba = 0, txlen = 0; + + lba |= (cdb[2] << 24); + lba |= (cdb[3] << 16); + lba |= (cdb[4] << 8); + lba |= cdb[5]; + txlen |= (cdb[6] << 24); + txlen |= (cdb[7] << 16); + txlen |= (cdb[8] << 8); + txlen |= cdb[9]; + + trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", + (unsigned long long)lba, (unsigned long long)txlen, + cdb[1] >> 5); + trace_seq_putc(p, 0); + return ret; +} + +static const char * +scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len) +{ + const char *ret = p->buffer + p->len; + sector_t lba = 0, txlen = 0; + + lba |= ((u64)cdb[2] << 56); + lba |= ((u64)cdb[3] << 48); + lba |= ((u64)cdb[4] << 40); + lba |= ((u64)cdb[5] << 32); + lba |= (cdb[6] << 24); + lba |= (cdb[7] << 16); + lba |= (cdb[8] << 8); + lba |= cdb[9]; + txlen |= (cdb[10] << 24); + txlen |= (cdb[11] << 16); + txlen |= (cdb[12] << 8); + txlen |= cdb[13]; + + trace_seq_printf(p, "lba=%llu txlen=%llu protect=%u", + (unsigned long long)lba, (unsigned long long)txlen, + cdb[1] >> 5); + + if (cdb[0] == WRITE_SAME_16) + trace_seq_printf(p, " unmap=%u", cdb[1] >> 3 & 1); + + trace_seq_putc(p, 0); + return ret; +} + +static const char * +scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len) +{ + const char *ret = p->buffer + p->len, *cmd; + sector_t lba = 0, txlen = 0; + u32 ei_lbrt = 0; + + switch (SERVICE_ACTION32(cdb)) { + case READ_32: + cmd = "READ"; + break; + case VERIFY_32: + cmd = "VERIFY"; + break; + case WRITE_32: + cmd = "WRITE"; + break; + case WRITE_SAME_32: + cmd = "WRITE_SAME"; + break; + default: + trace_seq_printf(p, "UNKNOWN"); + goto out; + } + + lba |= ((u64)cdb[12] << 56); + lba |= ((u64)cdb[13] << 48); + lba |= ((u64)cdb[14] << 40); + lba |= ((u64)cdb[15] << 32); + lba |= (cdb[16] << 24); + lba |= (cdb[17] << 16); + lba |= (cdb[18] << 8); + lba |= cdb[19]; + ei_lbrt |= (cdb[20] << 24); + ei_lbrt |= (cdb[21] << 16); + ei_lbrt |= (cdb[22] << 8); + ei_lbrt |= cdb[23]; + txlen |= (cdb[28] << 24); + txlen |= (cdb[29] << 16); + txlen |= (cdb[30] << 8); + txlen |= cdb[31]; + + trace_seq_printf(p, "%s_32 lba=%llu txlen=%llu protect=%u ei_lbrt=%u", + cmd, (unsigned long long)lba, + (unsigned long long)txlen, cdb[10] >> 5, ei_lbrt); + + if (SERVICE_ACTION32(cdb) == WRITE_SAME_32) + trace_seq_printf(p, " unmap=%u", cdb[10] >> 3 & 1); + +out: + trace_seq_putc(p, 0); + return ret; +} + +static const char * +scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len) +{ + const char *ret = p->buffer + p->len; + unsigned int regions = cdb[7] << 8 | cdb[8]; + + trace_seq_printf(p, "regions=%u", (regions - 8) / 16); + trace_seq_putc(p, 0); + return ret; +} + +static const char * +scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len) +{ + const char *ret = p->buffer + p->len, *cmd; + sector_t lba = 0; + u32 alloc_len = 0; + + switch (SERVICE_ACTION16(cdb)) { + case SAI_READ_CAPACITY_16: + cmd = "READ_CAPACITY_16"; + break; + case SAI_GET_LBA_STATUS: + cmd = "GET_LBA_STATUS"; + break; + default: + trace_seq_printf(p, "UNKNOWN"); + goto out; + } + + lba |= ((u64)cdb[2] << 56); + lba |= ((u64)cdb[3] << 48); + lba |= ((u64)cdb[4] << 40); + lba |= ((u64)cdb[5] << 32); + lba |= (cdb[6] << 24); + lba |= (cdb[7] << 16); + lba |= (cdb[8] << 8); + lba |= cdb[9]; + alloc_len |= (cdb[10] << 24); + alloc_len |= (cdb[11] << 16); + alloc_len |= (cdb[12] << 8); + alloc_len |= cdb[13]; + + trace_seq_printf(p, "%s lba=%llu alloc_len=%u", cmd, + (unsigned long long)lba, alloc_len); + +out: + trace_seq_putc(p, 0); + return ret; +} + +static const char * +scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len) +{ + switch (SERVICE_ACTION32(cdb)) { + case READ_32: + case VERIFY_32: + case WRITE_32: + case WRITE_SAME_32: + return scsi_trace_rw32(p, cdb, len); + default: + return scsi_trace_misc(p, cdb, len); + } +} + +static const char * +scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len) +{ + const char *ret = p->buffer + p->len; + + trace_seq_printf(p, "-"); + trace_seq_putc(p, 0); + return ret; +} + +const char * +scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len) +{ + switch (cdb[0]) { + case READ_6: + case WRITE_6: + return scsi_trace_rw6(p, cdb, len); + case READ_10: + case VERIFY: + case WRITE_10: + case WRITE_SAME: + return scsi_trace_rw10(p, cdb, len); + case READ_12: + case VERIFY_12: + case WRITE_12: + return scsi_trace_rw12(p, cdb, len); + case READ_16: + case VERIFY_16: + case WRITE_16: + case WRITE_SAME_16: + return scsi_trace_rw16(p, cdb, len); + case UNMAP: + return scsi_trace_unmap(p, cdb, len); + case SERVICE_ACTION_IN: + return scsi_trace_service_action_in(p, cdb, len); + case VARIABLE_LENGTH_CMD: + return scsi_trace_varlen(p, cdb, len); + default: + return scsi_trace_misc(p, cdb, len); + } +} + +unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s, + unsigned long long *args) +{ + scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]); + return 0; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_print_function(pevent, + process_scsi_trace_parse_cdb, + PEVENT_FUNC_ARG_STRING, + "scsi_trace_parse_cdb", + PEVENT_FUNC_ARG_PTR, + PEVENT_FUNC_ARG_PTR, + PEVENT_FUNC_ARG_INT, + PEVENT_FUNC_ARG_VOID); + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + pevent_unregister_print_function(pevent, process_scsi_trace_parse_cdb, + "scsi_trace_parse_cdb"); +} diff --git a/tools/lib/traceevent/plugin_xen.c b/tools/lib/traceevent/plugin_xen.c new file mode 100644 index 00000000000..3a413eaada6 --- /dev/null +++ b/tools/lib/traceevent/plugin_xen.c @@ -0,0 +1,136 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "event-parse.h" + +#define __HYPERVISOR_set_trap_table 0 +#define __HYPERVISOR_mmu_update 1 +#define __HYPERVISOR_set_gdt 2 +#define __HYPERVISOR_stack_switch 3 +#define __HYPERVISOR_set_callbacks 4 +#define __HYPERVISOR_fpu_taskswitch 5 +#define __HYPERVISOR_sched_op_compat 6 +#define __HYPERVISOR_dom0_op 7 +#define __HYPERVISOR_set_debugreg 8 +#define __HYPERVISOR_get_debugreg 9 +#define __HYPERVISOR_update_descriptor 10 +#define __HYPERVISOR_memory_op 12 +#define __HYPERVISOR_multicall 13 +#define __HYPERVISOR_update_va_mapping 14 +#define __HYPERVISOR_set_timer_op 15 +#define __HYPERVISOR_event_channel_op_compat 16 +#define __HYPERVISOR_xen_version 17 +#define __HYPERVISOR_console_io 18 +#define __HYPERVISOR_physdev_op_compat 19 +#define __HYPERVISOR_grant_table_op 20 +#define __HYPERVISOR_vm_assist 21 +#define __HYPERVISOR_update_va_mapping_otherdomain 22 +#define __HYPERVISOR_iret 23 /* x86 only */ +#define __HYPERVISOR_vcpu_op 24 +#define __HYPERVISOR_set_segment_base 25 /* x86/64 only */ +#define __HYPERVISOR_mmuext_op 26 +#define __HYPERVISOR_acm_op 27 +#define __HYPERVISOR_nmi_op 28 +#define __HYPERVISOR_sched_op 29 +#define __HYPERVISOR_callback_op 30 +#define __HYPERVISOR_xenoprof_op 31 +#define __HYPERVISOR_event_channel_op 32 +#define __HYPERVISOR_physdev_op 33 +#define __HYPERVISOR_hvm_op 34 +#define __HYPERVISOR_tmem_op 38 + +/* Architecture-specific hypercall definitions. */ +#define __HYPERVISOR_arch_0 48 +#define __HYPERVISOR_arch_1 49 +#define __HYPERVISOR_arch_2 50 +#define __HYPERVISOR_arch_3 51 +#define __HYPERVISOR_arch_4 52 +#define __HYPERVISOR_arch_5 53 +#define __HYPERVISOR_arch_6 54 +#define __HYPERVISOR_arch_7 55 + +#define N(x) [__HYPERVISOR_##x] = "("#x")" +static const char *xen_hypercall_names[] = { + N(set_trap_table), + N(mmu_update), + N(set_gdt), + N(stack_switch), + N(set_callbacks), + N(fpu_taskswitch), + N(sched_op_compat), + N(dom0_op), + N(set_debugreg), + N(get_debugreg), + N(update_descriptor), + N(memory_op), + N(multicall), + N(update_va_mapping), + N(set_timer_op), + N(event_channel_op_compat), + N(xen_version), + N(console_io), + N(physdev_op_compat), + N(grant_table_op), + N(vm_assist), + N(update_va_mapping_otherdomain), + N(iret), + N(vcpu_op), + N(set_segment_base), + N(mmuext_op), + N(acm_op), + N(nmi_op), + N(sched_op), + N(callback_op), + N(xenoprof_op), + N(event_channel_op), + N(physdev_op), + N(hvm_op), + +/* Architecture-specific hypercall definitions. */ + N(arch_0), + N(arch_1), + N(arch_2), + N(arch_3), + N(arch_4), + N(arch_5), + N(arch_6), + N(arch_7), +}; +#undef N + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +static const char *xen_hypercall_name(unsigned op) +{ + if (op < ARRAY_SIZE(xen_hypercall_names) && + xen_hypercall_names[op] != NULL) + return xen_hypercall_names[op]; + + return ""; +} + +unsigned long long process_xen_hypercall_name(struct trace_seq *s, + unsigned long long *args) +{ + unsigned int op = args[0]; + + trace_seq_printf(s, "%s", xen_hypercall_name(op)); + return 0; +} + +int PEVENT_PLUGIN_LOADER(struct pevent *pevent) +{ + pevent_register_print_function(pevent, + process_xen_hypercall_name, + PEVENT_FUNC_ARG_STRING, + "xen_hypercall_name", + PEVENT_FUNC_ARG_INT, + PEVENT_FUNC_ARG_VOID); + return 0; +} + +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) +{ + pevent_unregister_print_function(pevent, process_xen_hypercall_name, + "xen_hypercall_name"); +} diff --git a/tools/lib/traceevent/trace-seq.c b/tools/lib/traceevent/trace-seq.c index d7f2e68bc5b..ec3bd16a548 100644 --- a/tools/lib/traceevent/trace-seq.c +++ b/tools/lib/traceevent/trace-seq.c @@ -22,6 +22,7 @@ #include <string.h> #include <stdarg.h> +#include <asm/bug.h> #include "event-parse.h" #include "event-utils.h" @@ -32,10 +33,21 @@ #define TRACE_SEQ_POISON ((void *)0xdeadbeef) #define TRACE_SEQ_CHECK(s) \ do { \ - if ((s)->buffer == TRACE_SEQ_POISON) \ - die("Usage of trace_seq after it was destroyed"); \ + if (WARN_ONCE((s)->buffer == TRACE_SEQ_POISON, \ + "Usage of trace_seq after it was destroyed")) \ + (s)->state = TRACE_SEQ__BUFFER_POISONED; \ } while (0) +#define TRACE_SEQ_CHECK_RET_N(s, n) \ +do { \ + TRACE_SEQ_CHECK(s); \ + if ((s)->state != TRACE_SEQ__GOOD) \ + return n; \ +} while (0) + +#define TRACE_SEQ_CHECK_RET(s) TRACE_SEQ_CHECK_RET_N(s, ) +#define TRACE_SEQ_CHECK_RET0(s) TRACE_SEQ_CHECK_RET_N(s, 0) + /** * trace_seq_init - initialize the trace_seq structure * @s: a pointer to the trace_seq structure to initialize @@ -45,7 +57,11 @@ void trace_seq_init(struct trace_seq *s) s->len = 0; s->readpos = 0; s->buffer_size = TRACE_SEQ_BUF_SIZE; - s->buffer = malloc_or_die(s->buffer_size); + s->buffer = malloc(s->buffer_size); + if (s->buffer != NULL) + s->state = TRACE_SEQ__GOOD; + else + s->state = TRACE_SEQ__MEM_ALLOC_FAILED; } /** @@ -71,17 +87,23 @@ void trace_seq_destroy(struct trace_seq *s) { if (!s) return; - TRACE_SEQ_CHECK(s); + TRACE_SEQ_CHECK_RET(s); free(s->buffer); s->buffer = TRACE_SEQ_POISON; } static void expand_buffer(struct trace_seq *s) { + char *buf; + + buf = realloc(s->buffer, s->buffer_size + TRACE_SEQ_BUF_SIZE); + if (WARN_ONCE(!buf, "Can't allocate trace_seq buffer memory")) { + s->state = TRACE_SEQ__MEM_ALLOC_FAILED; + return; + } + + s->buffer = buf; s->buffer_size += TRACE_SEQ_BUF_SIZE; - s->buffer = realloc(s->buffer, s->buffer_size); - if (!s->buffer) - die("Can't allocate trace_seq buffer memory"); } /** @@ -105,9 +127,9 @@ trace_seq_printf(struct trace_seq *s, const char *fmt, ...) int len; int ret; - TRACE_SEQ_CHECK(s); - try_again: + TRACE_SEQ_CHECK_RET0(s); + len = (s->buffer_size - 1) - s->len; va_start(ap, fmt); @@ -141,9 +163,9 @@ trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args) int len; int ret; - TRACE_SEQ_CHECK(s); - try_again: + TRACE_SEQ_CHECK_RET0(s); + len = (s->buffer_size - 1) - s->len; ret = vsnprintf(s->buffer + s->len, len, fmt, args); @@ -172,13 +194,15 @@ int trace_seq_puts(struct trace_seq *s, const char *str) { int len; - TRACE_SEQ_CHECK(s); + TRACE_SEQ_CHECK_RET0(s); len = strlen(str); while (len > ((s->buffer_size - 1) - s->len)) expand_buffer(s); + TRACE_SEQ_CHECK_RET0(s); + memcpy(s->buffer + s->len, str, len); s->len += len; @@ -187,11 +211,13 @@ int trace_seq_puts(struct trace_seq *s, const char *str) int trace_seq_putc(struct trace_seq *s, unsigned char c) { - TRACE_SEQ_CHECK(s); + TRACE_SEQ_CHECK_RET0(s); while (s->len >= (s->buffer_size - 1)) expand_buffer(s); + TRACE_SEQ_CHECK_RET0(s); + s->buffer[s->len++] = c; return 1; @@ -199,7 +225,7 @@ int trace_seq_putc(struct trace_seq *s, unsigned char c) void trace_seq_terminate(struct trace_seq *s) { - TRACE_SEQ_CHECK(s); + TRACE_SEQ_CHECK_RET(s); /* There's always one character left on the buffer */ s->buffer[s->len] = 0; @@ -208,5 +234,16 @@ void trace_seq_terminate(struct trace_seq *s) int trace_seq_do_printf(struct trace_seq *s) { TRACE_SEQ_CHECK(s); - return printf("%.*s", s->len, s->buffer); + + switch (s->state) { + case TRACE_SEQ__GOOD: + return printf("%.*s", s->len, s->buffer); + case TRACE_SEQ__BUFFER_POISONED: + puts("Usage of trace_seq after it was destroyed"); + break; + case TRACE_SEQ__MEM_ALLOC_FAILED: + puts("Can't allocate trace_seq buffer memory"); + break; + } + return -1; } |