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-rw-r--r--include/linux/perf_counter.h728
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diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
deleted file mode 100644
index 89698d8aba5..00000000000
--- a/include/linux/perf_counter.h
+++ /dev/null
@@ -1,728 +0,0 @@
-/*
- * Performance counters:
- *
- * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
- * Copyright (C) 2008-2009, Red Hat, Inc., Ingo Molnar
- * Copyright (C) 2008-2009, Red Hat, Inc., Peter Zijlstra
- *
- * Data type definitions, declarations, prototypes.
- *
- * Started by: Thomas Gleixner and Ingo Molnar
- *
- * For licencing details see kernel-base/COPYING
- */
-#ifndef _LINUX_PERF_COUNTER_H
-#define _LINUX_PERF_COUNTER_H
-
-#include <linux/types.h>
-#include <linux/ioctl.h>
-#include <asm/byteorder.h>
-
-/*
- * User-space ABI bits:
- */
-
-/*
- * attr.type
- */
-enum perf_type_id {
- PERF_TYPE_HARDWARE = 0,
- PERF_TYPE_SOFTWARE = 1,
- PERF_TYPE_TRACEPOINT = 2,
- PERF_TYPE_HW_CACHE = 3,
- PERF_TYPE_RAW = 4,
-
- PERF_TYPE_MAX, /* non-ABI */
-};
-
-/*
- * Generalized performance counter event types, used by the
- * attr.event_id parameter of the sys_perf_counter_open()
- * syscall:
- */
-enum perf_hw_id {
- /*
- * Common hardware events, generalized by the kernel:
- */
- PERF_COUNT_HW_CPU_CYCLES = 0,
- PERF_COUNT_HW_INSTRUCTIONS = 1,
- PERF_COUNT_HW_CACHE_REFERENCES = 2,
- PERF_COUNT_HW_CACHE_MISSES = 3,
- PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4,
- PERF_COUNT_HW_BRANCH_MISSES = 5,
- PERF_COUNT_HW_BUS_CYCLES = 6,
-
- PERF_COUNT_HW_MAX, /* non-ABI */
-};
-
-/*
- * Generalized hardware cache counters:
- *
- * { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x
- * { read, write, prefetch } x
- * { accesses, misses }
- */
-enum perf_hw_cache_id {
- PERF_COUNT_HW_CACHE_L1D = 0,
- PERF_COUNT_HW_CACHE_L1I = 1,
- PERF_COUNT_HW_CACHE_LL = 2,
- PERF_COUNT_HW_CACHE_DTLB = 3,
- PERF_COUNT_HW_CACHE_ITLB = 4,
- PERF_COUNT_HW_CACHE_BPU = 5,
-
- PERF_COUNT_HW_CACHE_MAX, /* non-ABI */
-};
-
-enum perf_hw_cache_op_id {
- PERF_COUNT_HW_CACHE_OP_READ = 0,
- PERF_COUNT_HW_CACHE_OP_WRITE = 1,
- PERF_COUNT_HW_CACHE_OP_PREFETCH = 2,
-
- PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */
-};
-
-enum perf_hw_cache_op_result_id {
- PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0,
- PERF_COUNT_HW_CACHE_RESULT_MISS = 1,
-
- PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */
-};
-
-/*
- * Special "software" counters provided by the kernel, even if the hardware
- * does not support performance counters. These counters measure various
- * physical and sw events of the kernel (and allow the profiling of them as
- * well):
- */
-enum perf_sw_ids {
- PERF_COUNT_SW_CPU_CLOCK = 0,
- PERF_COUNT_SW_TASK_CLOCK = 1,
- PERF_COUNT_SW_PAGE_FAULTS = 2,
- PERF_COUNT_SW_CONTEXT_SWITCHES = 3,
- PERF_COUNT_SW_CPU_MIGRATIONS = 4,
- PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
- PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
-
- PERF_COUNT_SW_MAX, /* non-ABI */
-};
-
-/*
- * Bits that can be set in attr.sample_type to request information
- * in the overflow packets.
- */
-enum perf_counter_sample_format {
- PERF_SAMPLE_IP = 1U << 0,
- PERF_SAMPLE_TID = 1U << 1,
- PERF_SAMPLE_TIME = 1U << 2,
- PERF_SAMPLE_ADDR = 1U << 3,
- PERF_SAMPLE_GROUP = 1U << 4,
- PERF_SAMPLE_CALLCHAIN = 1U << 5,
- PERF_SAMPLE_ID = 1U << 6,
- PERF_SAMPLE_CPU = 1U << 7,
- PERF_SAMPLE_PERIOD = 1U << 8,
-
- PERF_SAMPLE_MAX = 1U << 9, /* non-ABI */
-};
-
-/*
- * Bits that can be set in attr.read_format to request that
- * reads on the counter should return the indicated quantities,
- * in increasing order of bit value, after the counter value.
- */
-enum perf_counter_read_format {
- PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0,
- PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1,
- PERF_FORMAT_ID = 1U << 2,
-
- PERF_FORMAT_MAX = 1U << 3, /* non-ABI */
-};
-
-#define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */
-
-/*
- * Hardware event to monitor via a performance monitoring counter:
- */
-struct perf_counter_attr {
-
- /*
- * Major type: hardware/software/tracepoint/etc.
- */
- __u32 type;
-
- /*
- * Size of the attr structure, for fwd/bwd compat.
- */
- __u32 size;
-
- /*
- * Type specific configuration information.
- */
- __u64 config;
-
- union {
- __u64 sample_period;
- __u64 sample_freq;
- };
-
- __u64 sample_type;
- __u64 read_format;
-
- __u64 disabled : 1, /* off by default */
- inherit : 1, /* children inherit it */
- pinned : 1, /* must always be on PMU */
- exclusive : 1, /* only group on PMU */
- exclude_user : 1, /* don't count user */
- exclude_kernel : 1, /* ditto kernel */
- exclude_hv : 1, /* ditto hypervisor */
- exclude_idle : 1, /* don't count when idle */
- mmap : 1, /* include mmap data */
- comm : 1, /* include comm data */
- freq : 1, /* use freq, not period */
-
- __reserved_1 : 53;
-
- __u32 wakeup_events; /* wakeup every n events */
- __u32 __reserved_2;
-
- __u64 __reserved_3;
-};
-
-/*
- * Ioctls that can be done on a perf counter fd:
- */
-#define PERF_COUNTER_IOC_ENABLE _IO ('$', 0)
-#define PERF_COUNTER_IOC_DISABLE _IO ('$', 1)
-#define PERF_COUNTER_IOC_REFRESH _IO ('$', 2)
-#define PERF_COUNTER_IOC_RESET _IO ('$', 3)
-#define PERF_COUNTER_IOC_PERIOD _IOW('$', 4, u64)
-
-enum perf_counter_ioc_flags {
- PERF_IOC_FLAG_GROUP = 1U << 0,
-};
-
-/*
- * Structure of the page that can be mapped via mmap
- */
-struct perf_counter_mmap_page {
- __u32 version; /* version number of this structure */
- __u32 compat_version; /* lowest version this is compat with */
-
- /*
- * Bits needed to read the hw counters in user-space.
- *
- * u32 seq;
- * s64 count;
- *
- * do {
- * seq = pc->lock;
- *
- * barrier()
- * if (pc->index) {
- * count = pmc_read(pc->index - 1);
- * count += pc->offset;
- * } else
- * goto regular_read;
- *
- * barrier();
- * } while (pc->lock != seq);
- *
- * NOTE: for obvious reason this only works on self-monitoring
- * processes.
- */
- __u32 lock; /* seqlock for synchronization */
- __u32 index; /* hardware counter identifier */
- __s64 offset; /* add to hardware counter value */
-
- /*
- * Control data for the mmap() data buffer.
- *
- * User-space reading the @data_head value should issue an rmb(), on
- * SMP capable platforms, after reading this value -- see
- * perf_counter_wakeup().
- *
- * When the mapping is PROT_WRITE the @data_tail value should be
- * written by userspace to reflect the last read data. In this case
- * the kernel will not over-write unread data.
- */
- __u64 data_head; /* head in the data section */
- __u64 data_tail; /* user-space written tail */
-};
-
-#define PERF_EVENT_MISC_CPUMODE_MASK (3 << 0)
-#define PERF_EVENT_MISC_CPUMODE_UNKNOWN (0 << 0)
-#define PERF_EVENT_MISC_KERNEL (1 << 0)
-#define PERF_EVENT_MISC_USER (2 << 0)
-#define PERF_EVENT_MISC_HYPERVISOR (3 << 0)
-#define PERF_EVENT_MISC_OVERFLOW (1 << 2)
-
-struct perf_event_header {
- __u32 type;
- __u16 misc;
- __u16 size;
-};
-
-enum perf_event_type {
-
- /*
- * The MMAP events record the PROT_EXEC mappings so that we can
- * correlate userspace IPs to code. They have the following structure:
- *
- * struct {
- * struct perf_event_header header;
- *
- * u32 pid, tid;
- * u64 addr;
- * u64 len;
- * u64 pgoff;
- * char filename[];
- * };
- */
- PERF_EVENT_MMAP = 1,
-
- /*
- * struct {
- * struct perf_event_header header;
- * u64 id;
- * u64 lost;
- * };
- */
- PERF_EVENT_LOST = 2,
-
- /*
- * struct {
- * struct perf_event_header header;
- *
- * u32 pid, tid;
- * char comm[];
- * };
- */
- PERF_EVENT_COMM = 3,
-
- /*
- * struct {
- * struct perf_event_header header;
- * u64 time;
- * u64 id;
- * u64 sample_period;
- * };
- */
- PERF_EVENT_PERIOD = 4,
-
- /*
- * struct {
- * struct perf_event_header header;
- * u64 time;
- * u64 id;
- * };
- */
- PERF_EVENT_THROTTLE = 5,
- PERF_EVENT_UNTHROTTLE = 6,
-
- /*
- * struct {
- * struct perf_event_header header;
- * u32 pid, ppid;
- * };
- */
- PERF_EVENT_FORK = 7,
-
- /*
- * When header.misc & PERF_EVENT_MISC_OVERFLOW the event_type field
- * will be PERF_SAMPLE_*
- *
- * struct {
- * struct perf_event_header header;
- *
- * { u64 ip; } && PERF_SAMPLE_IP
- * { u32 pid, tid; } && PERF_SAMPLE_TID
- * { u64 time; } && PERF_SAMPLE_TIME
- * { u64 addr; } && PERF_SAMPLE_ADDR
- * { u64 config; } && PERF_SAMPLE_CONFIG
- * { u32 cpu, res; } && PERF_SAMPLE_CPU
- *
- * { u64 nr;
- * { u64 id, val; } cnt[nr]; } && PERF_SAMPLE_GROUP
- *
- * { u64 nr,
- * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN
- * };
- */
-};
-
-enum perf_callchain_context {
- PERF_CONTEXT_HV = (__u64)-32,
- PERF_CONTEXT_KERNEL = (__u64)-128,
- PERF_CONTEXT_USER = (__u64)-512,
-
- PERF_CONTEXT_GUEST = (__u64)-2048,
- PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176,
- PERF_CONTEXT_GUEST_USER = (__u64)-2560,
-
- PERF_CONTEXT_MAX = (__u64)-4095,
-};
-
-#ifdef __KERNEL__
-/*
- * Kernel-internal data types and definitions:
- */
-
-#ifdef CONFIG_PERF_COUNTERS
-# include <asm/perf_counter.h>
-#endif
-
-#include <linux/list.h>
-#include <linux/mutex.h>
-#include <linux/rculist.h>
-#include <linux/rcupdate.h>
-#include <linux/spinlock.h>
-#include <linux/hrtimer.h>
-#include <linux/fs.h>
-#include <linux/pid_namespace.h>
-#include <asm/atomic.h>
-
-#define PERF_MAX_STACK_DEPTH 255
-
-struct perf_callchain_entry {
- __u64 nr;
- __u64 ip[PERF_MAX_STACK_DEPTH];
-};
-
-struct task_struct;
-
-/**
- * struct hw_perf_counter - performance counter hardware details:
- */
-struct hw_perf_counter {
-#ifdef CONFIG_PERF_COUNTERS
- union {
- struct { /* hardware */
- u64 config;
- unsigned long config_base;
- unsigned long counter_base;
- int idx;
- };
- union { /* software */
- atomic64_t count;
- struct hrtimer hrtimer;
- };
- };
- atomic64_t prev_count;
- u64 sample_period;
- u64 last_period;
- atomic64_t period_left;
- u64 interrupts;
-
- u64 freq_count;
- u64 freq_interrupts;
- u64 freq_stamp;
-#endif
-};
-
-struct perf_counter;
-
-/**
- * struct pmu - generic performance monitoring unit
- */
-struct pmu {
- int (*enable) (struct perf_counter *counter);
- void (*disable) (struct perf_counter *counter);
- void (*read) (struct perf_counter *counter);
- void (*unthrottle) (struct perf_counter *counter);
-};
-
-/**
- * enum perf_counter_active_state - the states of a counter
- */
-enum perf_counter_active_state {
- PERF_COUNTER_STATE_ERROR = -2,
- PERF_COUNTER_STATE_OFF = -1,
- PERF_COUNTER_STATE_INACTIVE = 0,
- PERF_COUNTER_STATE_ACTIVE = 1,
-};
-
-struct file;
-
-struct perf_mmap_data {
- struct rcu_head rcu_head;
- int nr_pages; /* nr of data pages */
- int writable; /* are we writable */
- int nr_locked; /* nr pages mlocked */
-
- atomic_t poll; /* POLL_ for wakeups */
- atomic_t events; /* event limit */
-
- atomic_long_t head; /* write position */
- atomic_long_t done_head; /* completed head */
-
- atomic_t lock; /* concurrent writes */
- atomic_t wakeup; /* needs a wakeup */
- atomic_t lost; /* nr records lost */
-
- struct perf_counter_mmap_page *user_page;
- void *data_pages[0];
-};
-
-struct perf_pending_entry {
- struct perf_pending_entry *next;
- void (*func)(struct perf_pending_entry *);
-};
-
-/**
- * struct perf_counter - performance counter kernel representation:
- */
-struct perf_counter {
-#ifdef CONFIG_PERF_COUNTERS
- struct list_head list_entry;
- struct list_head event_entry;
- struct list_head sibling_list;
- int nr_siblings;
- struct perf_counter *group_leader;
- const struct pmu *pmu;
-
- enum perf_counter_active_state state;
- atomic64_t count;
-
- /*
- * These are the total time in nanoseconds that the counter
- * has been enabled (i.e. eligible to run, and the task has
- * been scheduled in, if this is a per-task counter)
- * and running (scheduled onto the CPU), respectively.
- *
- * They are computed from tstamp_enabled, tstamp_running and
- * tstamp_stopped when the counter is in INACTIVE or ACTIVE state.
- */
- u64 total_time_enabled;
- u64 total_time_running;
-
- /*
- * These are timestamps used for computing total_time_enabled
- * and total_time_running when the counter is in INACTIVE or
- * ACTIVE state, measured in nanoseconds from an arbitrary point
- * in time.
- * tstamp_enabled: the notional time when the counter was enabled
- * tstamp_running: the notional time when the counter was scheduled on
- * tstamp_stopped: in INACTIVE state, the notional time when the
- * counter was scheduled off.
- */
- u64 tstamp_enabled;
- u64 tstamp_running;
- u64 tstamp_stopped;
-
- struct perf_counter_attr attr;
- struct hw_perf_counter hw;
-
- struct perf_counter_context *ctx;
- struct file *filp;
-
- /*
- * These accumulate total time (in nanoseconds) that children
- * counters have been enabled and running, respectively.
- */
- atomic64_t child_total_time_enabled;
- atomic64_t child_total_time_running;
-
- /*
- * Protect attach/detach and child_list:
- */
- struct mutex child_mutex;
- struct list_head child_list;
- struct perf_counter *parent;
-
- int oncpu;
- int cpu;
-
- struct list_head owner_entry;
- struct task_struct *owner;
-
- /* mmap bits */
- struct mutex mmap_mutex;
- atomic_t mmap_count;
- struct perf_mmap_data *data;
-
- /* poll related */
- wait_queue_head_t waitq;
- struct fasync_struct *fasync;
-
- /* delayed work for NMIs and such */
- int pending_wakeup;
- int pending_kill;
- int pending_disable;
- struct perf_pending_entry pending;
-
- atomic_t event_limit;
-
- void (*destroy)(struct perf_counter *);
- struct rcu_head rcu_head;
-
- struct pid_namespace *ns;
- u64 id;
-#endif
-};
-
-/**
- * struct perf_counter_context - counter context structure
- *
- * Used as a container for task counters and CPU counters as well:
- */
-struct perf_counter_context {
- /*
- * Protect the states of the counters in the list,
- * nr_active, and the list:
- */
- spinlock_t lock;
- /*
- * Protect the list of counters. Locking either mutex or lock
- * is sufficient to ensure the list doesn't change; to change
- * the list you need to lock both the mutex and the spinlock.
- */
- struct mutex mutex;
-
- struct list_head counter_list;
- struct list_head event_list;
- int nr_counters;
- int nr_active;
- int is_active;
- atomic_t refcount;
- struct task_struct *task;
-
- /*
- * Context clock, runs when context enabled.
- */
- u64 time;
- u64 timestamp;
-
- /*
- * These fields let us detect when two contexts have both
- * been cloned (inherited) from a common ancestor.
- */
- struct perf_counter_context *parent_ctx;
- u64 parent_gen;
- u64 generation;
- int pin_count;
- struct rcu_head rcu_head;
-};
-
-/**
- * struct perf_counter_cpu_context - per cpu counter context structure
- */
-struct perf_cpu_context {
- struct perf_counter_context ctx;
- struct perf_counter_context *task_ctx;
- int active_oncpu;
- int max_pertask;
- int exclusive;
-
- /*
- * Recursion avoidance:
- *
- * task, softirq, irq, nmi context
- */
- int recursion[4];
-};
-
-#ifdef CONFIG_PERF_COUNTERS
-
-/*
- * Set by architecture code:
- */
-extern int perf_max_counters;
-
-extern const struct pmu *hw_perf_counter_init(struct perf_counter *counter);
-
-extern void perf_counter_task_sched_in(struct task_struct *task, int cpu);
-extern void perf_counter_task_sched_out(struct task_struct *task,
- struct task_struct *next, int cpu);
-extern void perf_counter_task_tick(struct task_struct *task, int cpu);
-extern int perf_counter_init_task(struct task_struct *child);
-extern void perf_counter_exit_task(struct task_struct *child);
-extern void perf_counter_free_task(struct task_struct *task);
-extern void set_perf_counter_pending(void);
-extern void perf_counter_do_pending(void);
-extern void perf_counter_print_debug(void);
-extern void __perf_disable(void);
-extern bool __perf_enable(void);
-extern void perf_disable(void);
-extern void perf_enable(void);
-extern int perf_counter_task_disable(void);
-extern int perf_counter_task_enable(void);
-extern int hw_perf_group_sched_in(struct perf_counter *group_leader,
- struct perf_cpu_context *cpuctx,
- struct perf_counter_context *ctx, int cpu);
-extern void perf_counter_update_userpage(struct perf_counter *counter);
-
-struct perf_sample_data {
- struct pt_regs *regs;
- u64 addr;
- u64 period;
-};
-
-extern int perf_counter_overflow(struct perf_counter *counter, int nmi,
- struct perf_sample_data *data);
-
-/*
- * Return 1 for a software counter, 0 for a hardware counter
- */
-static inline int is_software_counter(struct perf_counter *counter)
-{
- return (counter->attr.type != PERF_TYPE_RAW) &&
- (counter->attr.type != PERF_TYPE_HARDWARE) &&
- (counter->attr.type != PERF_TYPE_HW_CACHE);
-}
-
-extern void perf_swcounter_event(u32, u64, int, struct pt_regs *, u64);
-
-extern void __perf_counter_mmap(struct vm_area_struct *vma);
-
-static inline void perf_counter_mmap(struct vm_area_struct *vma)
-{
- if (vma->vm_flags & VM_EXEC)
- __perf_counter_mmap(vma);
-}
-
-extern void perf_counter_comm(struct task_struct *tsk);
-extern void perf_counter_fork(struct task_struct *tsk);
-
-extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs);
-
-extern int sysctl_perf_counter_paranoid;
-extern int sysctl_perf_counter_mlock;
-extern int sysctl_perf_counter_sample_rate;
-
-extern void perf_counter_init(void);
-
-#ifndef perf_misc_flags
-#define perf_misc_flags(regs) (user_mode(regs) ? PERF_EVENT_MISC_USER : \
- PERF_EVENT_MISC_KERNEL)
-#define perf_instruction_pointer(regs) instruction_pointer(regs)
-#endif
-
-#else
-static inline void
-perf_counter_task_sched_in(struct task_struct *task, int cpu) { }
-static inline void
-perf_counter_task_sched_out(struct task_struct *task,
- struct task_struct *next, int cpu) { }
-static inline void
-perf_counter_task_tick(struct task_struct *task, int cpu) { }
-static inline int perf_counter_init_task(struct task_struct *child) { return 0; }
-static inline void perf_counter_exit_task(struct task_struct *child) { }
-static inline void perf_counter_free_task(struct task_struct *task) { }
-static inline void perf_counter_do_pending(void) { }
-static inline void perf_counter_print_debug(void) { }
-static inline void perf_disable(void) { }
-static inline void perf_enable(void) { }
-static inline int perf_counter_task_disable(void) { return -EINVAL; }
-static inline int perf_counter_task_enable(void) { return -EINVAL; }
-
-static inline void
-perf_swcounter_event(u32 event, u64 nr, int nmi,
- struct pt_regs *regs, u64 addr) { }
-
-static inline void perf_counter_mmap(struct vm_area_struct *vma) { }
-static inline void perf_counter_comm(struct task_struct *tsk) { }
-static inline void perf_counter_fork(struct task_struct *tsk) { }
-static inline void perf_counter_init(void) { }
-#endif
-
-#endif /* __KERNEL__ */
-#endif /* _LINUX_PERF_COUNTER_H */
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