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-rw-r--r--tools/perf/config/Makefile298
-rw-r--r--tools/perf/config/Makefile.arch3
-rw-r--r--tools/perf/config/feature-checks/Makefile10
-rw-r--r--tools/perf/config/feature-checks/test-all.c10
-rw-r--r--tools/perf/config/feature-checks/test-libdw-dwarf-unwind.c13
-rw-r--r--tools/perf/config/feature-checks/test-on-exit.c16
6 files changed, 241 insertions, 109 deletions
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 0331ea2701a..f30ac5e5d27 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -29,11 +29,25 @@ ifeq ($(ARCH),x86)
endif
NO_PERF_REGS := 0
endif
+
ifeq ($(ARCH),arm)
NO_PERF_REGS := 0
LIBUNWIND_LIBS = -lunwind -lunwind-arm
endif
+ifeq ($(ARCH),arm64)
+ NO_PERF_REGS := 0
+ LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
+endif
+
+# So far there's only x86 and arm libdw unwind support merged in perf.
+# Disable it on all other architectures in case libdw unwind
+# support is detected in system. Add supported architectures
+# to the check.
+ifneq ($(ARCH),$(filter $(ARCH),x86 arm))
+ NO_LIBDW_DWARF_UNWIND := 1
+endif
+
ifeq ($(LIBUNWIND_LIBS),)
NO_LIBUNWIND := 1
else
@@ -59,6 +73,17 @@ ifeq ($(NO_PERF_REGS),0)
CFLAGS += -DHAVE_PERF_REGS_SUPPORT
endif
+ifndef NO_LIBELF
+ # for linking with debug library, run like:
+ # make DEBUG=1 LIBDW_DIR=/opt/libdw/
+ ifdef LIBDW_DIR
+ LIBDW_CFLAGS := -I$(LIBDW_DIR)/include
+ LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
+ endif
+ FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
+ FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) -ldw
+endif
+
# include ARCH specific config
-include $(src-perf)/arch/$(ARCH)/Makefile
@@ -98,6 +123,10 @@ CFLAGS += -Wall
CFLAGS += -Wextra
CFLAGS += -std=gnu99
+# Enforce a non-executable stack, as we may regress (again) in the future by
+# adding assembler files missing the .GNU-stack linker note.
+LDFLAGS += -Wl,-z,noexecstack
+
EXTLIBS = -lelf -lpthread -lrt -lm -ldl
ifneq ($(OUTPUT),)
@@ -145,9 +174,38 @@ CORE_FEATURE_TESTS = \
libpython-version \
libslang \
libunwind \
- on-exit \
stackprotector-all \
- timerfd
+ timerfd \
+ libdw-dwarf-unwind
+
+LIB_FEATURE_TESTS = \
+ dwarf \
+ glibc \
+ gtk2 \
+ libaudit \
+ libbfd \
+ libelf \
+ libnuma \
+ libperl \
+ libpython \
+ libslang \
+ libunwind \
+ libdw-dwarf-unwind
+
+VF_FEATURE_TESTS = \
+ backtrace \
+ fortify-source \
+ gtk2-infobar \
+ libelf-getphdrnum \
+ libelf-mmap \
+ libpython-version \
+ stackprotector-all \
+ timerfd \
+ libunwind-debug-frame \
+ bionic \
+ liberty \
+ liberty-z \
+ cplus-demangle
# Set FEATURE_CHECK_(C|LD)FLAGS-all for all CORE_FEATURE_TESTS features.
# If in the future we need per-feature checks/flags for features not
@@ -161,17 +219,6 @@ endef
$(foreach feat,$(CORE_FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
#
-# So here we detect whether test-all was rebuilt, to be able
-# to skip the print-out of the long features list if the file
-# existed before and after it was built:
-#
-ifeq ($(wildcard $(OUTPUT)config/feature-checks/test-all.bin),)
- test-all-failed := 1
-else
- test-all-failed := 0
-endif
-
-#
# Special fast-path for the 'all features are available' case:
#
$(call feature_check,all,$(MSG))
@@ -180,15 +227,6 @@ $(call feature_check,all,$(MSG))
# Just in case the build freshly failed, make sure we print the
# feature matrix:
#
-ifeq ($(feature-all), 0)
- test-all-failed := 1
-endif
-
-ifeq ($(test-all-failed),1)
- $(info )
- $(info Auto-detecting system features:)
-endif
-
ifeq ($(feature-all), 1)
#
# test-all.c passed - just set all the core feature flags to 1:
@@ -199,27 +237,6 @@ else
$(foreach feat,$(CORE_FEATURE_TESTS),$(call feature_check,$(feat)))
endif
-#
-# Print the result of the feature test:
-#
-feature_print = $(eval $(feature_print_code)) $(info $(MSG))
-
-define feature_print_code
- ifeq ($(feature-$(1)), 1)
- MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
- else
- MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
- endif
-endef
-
-#
-# Only print out our features if we rebuilt the testcases or if a test failed:
-#
-ifeq ($(test-all-failed), 1)
- $(foreach feat,$(CORE_FEATURE_TESTS),$(call feature_print,$(feat)))
- $(info )
-endif
-
ifeq ($(feature-stackprotector-all), 1)
CFLAGS += -fstack-protector-all
endif
@@ -264,6 +281,7 @@ ifdef NO_LIBELF
NO_DWARF := 1
NO_DEMANGLE := 1
NO_LIBUNWIND := 1
+ NO_LIBDW_DWARF_UNWIND := 1
else
ifeq ($(feature-libelf), 0)
ifeq ($(feature-glibc), 1)
@@ -278,17 +296,22 @@ else
NO_LIBELF := 1
NO_DWARF := 1
NO_DEMANGLE := 1
+ NO_LIBUNWIND := 1
+ NO_LIBDW_DWARF_UNWIND := 1
else
- msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]/glibc-static);
+ ifneq ($(filter s% -static%,$(LDFLAGS),),)
+ msg := $(error No static glibc found, please install glibc-static);
+ else
+ msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
+ endif
endif
else
- # for linking with debug library, run like:
- # make DEBUG=1 LIBDW_DIR=/opt/libdw/
- ifdef LIBDW_DIR
- LIBDW_CFLAGS := -I$(LIBDW_DIR)/include
- LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
+ ifndef NO_LIBDW_DWARF_UNWIND
+ ifneq ($(feature-libdw-dwarf-unwind),1)
+ NO_LIBDW_DWARF_UNWIND := 1
+ msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
+ endif
endif
-
ifneq ($(feature-dwarf), 1)
msg := $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev);
NO_DWARF := 1
@@ -324,25 +347,51 @@ endif # NO_LIBELF
ifndef NO_LIBUNWIND
ifneq ($(feature-libunwind), 1)
- msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 1.1);
+ msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
NO_LIBUNWIND := 1
+ endif
+endif
+
+dwarf-post-unwind := 1
+dwarf-post-unwind-text := BUG
+
+# setup DWARF post unwinder
+ifdef NO_LIBUNWIND
+ ifdef NO_LIBDW_DWARF_UNWIND
+ msg := $(warning Disabling post unwind, no support found.);
+ dwarf-post-unwind := 0
else
- ifeq ($(ARCH),arm)
- $(call feature_check,libunwind-debug-frame)
- ifneq ($(feature-libunwind-debug-frame), 1)
- msg := $(warning No debug_frame support found in libunwind);
- CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
- endif
- else
- # non-ARM has no dwarf_find_debug_frame() function:
+ dwarf-post-unwind-text := libdw
+ endif
+else
+ dwarf-post-unwind-text := libunwind
+ # Enable libunwind support by default.
+ ifndef NO_LIBDW_DWARF_UNWIND
+ NO_LIBDW_DWARF_UNWIND := 1
+ endif
+endif
+
+ifeq ($(dwarf-post-unwind),1)
+ CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
+else
+ NO_DWARF_UNWIND := 1
+endif
+
+ifndef NO_LIBUNWIND
+ ifeq ($(ARCH),$(filter $(ARCH),arm arm64))
+ $(call feature_check,libunwind-debug-frame)
+ ifneq ($(feature-libunwind-debug-frame), 1)
+ msg := $(warning No debug_frame support found in libunwind);
CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
endif
-
- CFLAGS += -DHAVE_LIBUNWIND_SUPPORT
- EXTLIBS += $(LIBUNWIND_LIBS)
- CFLAGS += $(LIBUNWIND_CFLAGS)
- LDFLAGS += $(LIBUNWIND_LDFLAGS)
- endif # ifneq ($(feature-libunwind), 1)
+ else
+ # non-ARM has no dwarf_find_debug_frame() function:
+ CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
+ endif
+ CFLAGS += -DHAVE_LIBUNWIND_SUPPORT
+ EXTLIBS += $(LIBUNWIND_LIBS)
+ CFLAGS += $(LIBUNWIND_CFLAGS)
+ LDFLAGS += $(LIBUNWIND_LDFLAGS)
endif
ifndef NO_LIBAUDIT
@@ -402,6 +451,7 @@ else
ifneq ($(feature-libperl), 1)
CFLAGS += -DNO_LIBPERL
NO_LIBPERL := 1
+ msg := $(warning Missing perl devel files. Disabling perl scripting support, consider installing perl-ExtUtils-Embed);
else
LDFLAGS += $(PERL_EMBED_LDFLAGS)
EXTLIBS += $(PERL_EMBED_LIBADD)
@@ -478,7 +528,21 @@ else
endif
ifeq ($(feature-libbfd), 1)
- EXTLIBS += -lbfd -lz -liberty
+ EXTLIBS += -lbfd
+
+ # call all detections now so we get correct
+ # status in VF output
+ $(call feature_check,liberty)
+ $(call feature_check,liberty-z)
+ $(call feature_check,cplus-demangle)
+
+ ifeq ($(feature-liberty), 1)
+ EXTLIBS += -liberty
+ else
+ ifeq ($(feature-liberty-z), 1)
+ EXTLIBS += -liberty -lz
+ endif
+ endif
endif
ifdef NO_DEMANGLE
@@ -489,15 +553,10 @@ else
CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
else
ifneq ($(feature-libbfd), 1)
- $(call feature_check,liberty)
- ifeq ($(feature-liberty), 1)
- EXTLIBS += -lbfd -liberty
- else
- $(call feature_check,liberty-z)
- ifeq ($(feature-liberty-z), 1)
- EXTLIBS += -lbfd -liberty -lz
- else
- $(call feature_check,cplus-demangle)
+ ifneq ($(feature-liberty), 1)
+ ifneq ($(feature-liberty-z), 1)
+ # we dont have neither HAVE_CPLUS_DEMANGLE_SUPPORT
+ # or any of 'bfd iberty z' trinity
ifeq ($(feature-cplus-demangle), 1)
EXTLIBS += -liberty
CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
@@ -515,12 +574,6 @@ ifneq ($(filter -lbfd,$(EXTLIBS)),)
CFLAGS += -DHAVE_LIBBFD_SUPPORT
endif
-ifndef NO_ON_EXIT
- ifeq ($(feature-on-exit), 1)
- CFLAGS += -DHAVE_ON_EXIT_SUPPORT
- endif
-endif
-
ifndef NO_BACKTRACE
ifeq ($(feature-backtrace), 1)
CFLAGS += -DHAVE_BACKTRACE_SUPPORT
@@ -551,7 +604,7 @@ endif
# Make the path relative to DESTDIR, not to prefix
ifndef DESTDIR
-prefix = $(HOME)
+prefix ?= $(HOME)
endif
bindir_relative = bin
bindir = $(prefix)/$(bindir_relative)
@@ -602,3 +655,84 @@ ifdef DESTDIR
plugindir=$(libdir)/traceevent/plugins
plugindir_SQ= $(subst ','\'',$(plugindir))
endif
+
+#
+# Print the result of the feature test:
+#
+feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
+
+define feature_print_status_code
+ ifeq ($(feature-$(1)), 1)
+ MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
+ else
+ MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
+ endif
+endef
+
+feature_print_var = $(eval $(feature_print_var_code)) $(info $(MSG))
+define feature_print_var_code
+ MSG = $(shell printf '...%30s: %s' $(1) $($(1)))
+endef
+
+feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
+define feature_print_text_code
+ MSG = $(shell printf '...%30s: %s' $(1) $(2))
+endef
+
+PERF_FEATURES := $(foreach feat,$(LIB_FEATURE_TESTS),feature-$(feat)($(feature-$(feat))))
+PERF_FEATURES_FILE := $(shell touch $(OUTPUT)PERF-FEATURES; cat $(OUTPUT)PERF-FEATURES)
+
+ifeq ($(dwarf-post-unwind),1)
+ PERF_FEATURES += dwarf-post-unwind($(dwarf-post-unwind-text))
+endif
+
+# The $(display_lib) controls the default detection message
+# output. It's set if:
+# - detected features differes from stored features from
+# last build (in PERF-FEATURES file)
+# - one of the $(LIB_FEATURE_TESTS) is not detected
+# - VF is enabled
+
+ifneq ("$(PERF_FEATURES)","$(PERF_FEATURES_FILE)")
+ $(shell echo "$(PERF_FEATURES)" > $(OUTPUT)PERF-FEATURES)
+ display_lib := 1
+endif
+
+feature_check = $(eval $(feature_check_code))
+define feature_check_code
+ ifneq ($(feature-$(1)), 1)
+ display_lib := 1
+ endif
+endef
+
+$(foreach feat,$(LIB_FEATURE_TESTS),$(call feature_check,$(feat)))
+
+ifeq ($(VF),1)
+ display_lib := 1
+ display_vf := 1
+endif
+
+ifeq ($(display_lib),1)
+ $(info )
+ $(info Auto-detecting system features:)
+ $(foreach feat,$(LIB_FEATURE_TESTS),$(call feature_print_status,$(feat),))
+
+ ifeq ($(dwarf-post-unwind),1)
+ $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text))
+ endif
+endif
+
+ifeq ($(display_vf),1)
+ $(foreach feat,$(VF_FEATURE_TESTS),$(call feature_print_status,$(feat),))
+ $(info )
+ $(call feature_print_var,prefix)
+ $(call feature_print_var,bindir)
+ $(call feature_print_var,libdir)
+ $(call feature_print_var,sysconfdir)
+ $(call feature_print_var,LIBUNWIND_DIR)
+ $(call feature_print_var,LIBDW_DIR)
+endif
+
+ifeq ($(display_lib),1)
+ $(info )
+endif
diff --git a/tools/perf/config/Makefile.arch b/tools/perf/config/Makefile.arch
index fef8ae92280..4b06719ee98 100644
--- a/tools/perf/config/Makefile.arch
+++ b/tools/perf/config/Makefile.arch
@@ -5,7 +5,8 @@ ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
-e s/arm.*/arm/ -e s/sa110/arm/ \
-e s/s390x/s390/ -e s/parisc64/parisc/ \
-e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
- -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
+ -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ \
+ -e s/tile.*/tile/ )
# Additional ARCH settings for x86
ifeq ($(ARCH),i386)
diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index 523b7bc1055..64c84e5f051 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -24,9 +24,9 @@ FILES= \
test-libslang.bin \
test-libunwind.bin \
test-libunwind-debug-frame.bin \
- test-on-exit.bin \
test-stackprotector-all.bin \
- test-timerfd.bin
+ test-timerfd.bin \
+ test-libdw-dwarf-unwind.bin
CC := $(CROSS_COMPILE)gcc -MD
PKG_CONFIG := $(CROSS_COMPILE)pkg-config
@@ -132,15 +132,15 @@ test-liberty-z.bin:
test-cplus-demangle.bin:
$(BUILD) -liberty
-test-on-exit.bin:
- $(BUILD)
-
test-backtrace.bin:
$(BUILD)
test-timerfd.bin:
$(BUILD)
+test-libdw-dwarf-unwind.bin:
+ $(BUILD)
+
-include *.d
###############################
diff --git a/tools/perf/config/feature-checks/test-all.c b/tools/perf/config/feature-checks/test-all.c
index 9b8a544155b..fe5c1e5c952 100644
--- a/tools/perf/config/feature-checks/test-all.c
+++ b/tools/perf/config/feature-checks/test-all.c
@@ -69,10 +69,6 @@
# include "test-libbfd.c"
#undef main
-#define main main_test_on_exit
-# include "test-on-exit.c"
-#undef main
-
#define main main_test_backtrace
# include "test-backtrace.c"
#undef main
@@ -89,6 +85,10 @@
# include "test-stackprotector-all.c"
#undef main
+#define main main_test_libdw_dwarf_unwind
+# include "test-libdw-dwarf-unwind.c"
+#undef main
+
int main(int argc, char *argv[])
{
main_test_libpython();
@@ -106,11 +106,11 @@ int main(int argc, char *argv[])
main_test_gtk2(argc, argv);
main_test_gtk2_infobar(argc, argv);
main_test_libbfd();
- main_test_on_exit();
main_test_backtrace();
main_test_libnuma();
main_test_timerfd();
main_test_stackprotector_all();
+ main_test_libdw_dwarf_unwind();
return 0;
}
diff --git a/tools/perf/config/feature-checks/test-libdw-dwarf-unwind.c b/tools/perf/config/feature-checks/test-libdw-dwarf-unwind.c
new file mode 100644
index 00000000000..f676a3ff442
--- /dev/null
+++ b/tools/perf/config/feature-checks/test-libdw-dwarf-unwind.c
@@ -0,0 +1,13 @@
+
+#include <elfutils/libdwfl.h>
+
+int main(void)
+{
+ /*
+ * This function is guarded via: __nonnull_attribute__ (1, 2).
+ * Passing '1' as arguments value. This code is never executed,
+ * only compiled.
+ */
+ dwfl_thread_getframes((void *) 1, (void *) 1, NULL);
+ return 0;
+}
diff --git a/tools/perf/config/feature-checks/test-on-exit.c b/tools/perf/config/feature-checks/test-on-exit.c
deleted file mode 100644
index 8e88b16e6de..00000000000
--- a/tools/perf/config/feature-checks/test-on-exit.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-static void exit_fn(int status, void *__data)
-{
- printf("exit status: %d, data: %d\n", status, *(int *)__data);
-}
-
-static int data = 123;
-
-int main(void)
-{
- on_exit(exit_fn, &data);
-
- return 321;
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 23:55:35 +0000