X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Fperf_counter.h;h=368bd70f1d2d1358a3b46efaaf021d9085e85b5c;hb=14d18a81b5171d4433e41129619c75748b4f4d26;hp=c8c1dfc22c938a65171670ea50b92f692f6c1867;hpb=9d23a90a67261e73b2fcac04d8ca963c6b496afb;p=safe%2Fjmp%2Flinux-2.6 diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index c8c1dfc..368bd70 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -1,12 +1,17 @@ /* - * Performance counters: + * NOTE: this file will be removed in a future kernel release, it is + * provided as a courtesy copy of user-space code that relies on the + * old (pre-rename) symbols and constants. * - * Copyright(C) 2008, Thomas Gleixner - * Copyright(C) 2008, Red Hat, Inc., Ingo Molnar + * Performance events: + * + * Copyright (C) 2008-2009, Thomas Gleixner + * 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 + * Started by: Thomas Gleixner and Ingo Molnar * * For licencing details see kernel-base/COPYING */ @@ -22,124 +27,169 @@ */ /* - * hw_event.type + * attr.type */ -enum perf_event_types { - PERF_TYPE_HARDWARE = 0, - PERF_TYPE_SOFTWARE = 1, - PERF_TYPE_TRACEPOINT = 2, - - /* - * available TYPE space, raw is the max value. - */ - - PERF_TYPE_RAW = 128, +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 hw_event.event_id - * parameter of the sys_perf_counter_open() syscall: + * Generalized performance counter event types, used by the + * attr.event_id parameter of the sys_perf_counter_open() + * syscall: */ -enum hw_event_ids { +enum perf_hw_id { /* * Common hardware events, generalized by the kernel: */ - PERF_COUNT_CPU_CYCLES = 0, - PERF_COUNT_INSTRUCTIONS = 1, - PERF_COUNT_CACHE_REFERENCES = 2, - PERF_COUNT_CACHE_MISSES = 3, - PERF_COUNT_BRANCH_INSTRUCTIONS = 4, - PERF_COUNT_BRANCH_MISSES = 5, - PERF_COUNT_BUS_CYCLES = 6, - - PERF_HW_EVENTS_MAX = 7, + 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 */ }; /* - * 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): + * Generalized hardware cache counters: + * + * { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x + * { read, write, prefetch } x + * { accesses, misses } */ -enum sw_event_ids { - PERF_COUNT_CPU_CLOCK = 0, - PERF_COUNT_TASK_CLOCK = 1, - PERF_COUNT_PAGE_FAULTS = 2, - PERF_COUNT_CONTEXT_SWITCHES = 3, - PERF_COUNT_CPU_MIGRATIONS = 4, - PERF_COUNT_PAGE_FAULTS_MIN = 5, - PERF_COUNT_PAGE_FAULTS_MAJ = 6, - - PERF_SW_EVENTS_MAX = 7, +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 */ }; -#define __PERF_COUNTER_MASK(name) \ - (((1ULL << PERF_COUNTER_##name##_BITS) - 1) << \ - PERF_COUNTER_##name##_SHIFT) +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, -#define PERF_COUNTER_RAW_BITS 1 -#define PERF_COUNTER_RAW_SHIFT 63 -#define PERF_COUNTER_RAW_MASK __PERF_COUNTER_MASK(RAW) + PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ +}; -#define PERF_COUNTER_CONFIG_BITS 63 -#define PERF_COUNTER_CONFIG_SHIFT 0 -#define PERF_COUNTER_CONFIG_MASK __PERF_COUNTER_MASK(CONFIG) +enum perf_hw_cache_op_result_id { + PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, + PERF_COUNT_HW_CACHE_RESULT_MISS = 1, -#define PERF_COUNTER_TYPE_BITS 7 -#define PERF_COUNTER_TYPE_SHIFT 56 -#define PERF_COUNTER_TYPE_MASK __PERF_COUNTER_MASK(TYPE) + PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ +}; -#define PERF_COUNTER_EVENT_BITS 56 -#define PERF_COUNTER_EVENT_SHIFT 0 -#define PERF_COUNTER_EVENT_MASK __PERF_COUNTER_MASK(EVENT) +/* + * 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 hw_event.record_type to request information + * Bits that can be set in attr.sample_type to request information * in the overflow packets. */ -enum perf_counter_record_format { - PERF_RECORD_IP = 1U << 0, - PERF_RECORD_TID = 1U << 1, - PERF_RECORD_TIME = 1U << 2, - PERF_RECORD_ADDR = 1U << 3, - PERF_RECORD_GROUP = 1U << 4, - PERF_RECORD_CALLCHAIN = 1U << 5, - PERF_RECORD_CONFIG = 1U << 6, - PERF_RECORD_CPU = 1U << 7, +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_READ = 1U << 4, + PERF_SAMPLE_CALLCHAIN = 1U << 5, + PERF_SAMPLE_ID = 1U << 6, + PERF_SAMPLE_CPU = 1U << 7, + PERF_SAMPLE_PERIOD = 1U << 8, + PERF_SAMPLE_STREAM_ID = 1U << 9, + PERF_SAMPLE_RAW = 1U << 10, + + PERF_SAMPLE_MAX = 1U << 11, /* non-ABI */ }; /* - * Bits that can be set in hw_event.read_format to request that - * reads on the counter should return the indicated quantities, - * in increasing order of bit value, after the counter value. + * The format of the data returned by read() on a perf counter fd, + * as specified by attr.read_format: + * + * struct read_format { + * { u64 value; + * { u64 time_enabled; } && PERF_FORMAT_ENABLED + * { u64 time_running; } && PERF_FORMAT_RUNNING + * { u64 id; } && PERF_FORMAT_ID + * } && !PERF_FORMAT_GROUP + * + * { u64 nr; + * { u64 time_enabled; } && PERF_FORMAT_ENABLED + * { u64 time_running; } && PERF_FORMAT_RUNNING + * { u64 value; + * { u64 id; } && PERF_FORMAT_ID + * } cntr[nr]; + * } && PERF_FORMAT_GROUP + * }; */ enum perf_counter_read_format { - PERF_FORMAT_TOTAL_TIME_ENABLED = 1, - PERF_FORMAT_TOTAL_TIME_RUNNING = 2, + PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0, + PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1, + PERF_FORMAT_ID = 1U << 2, + PERF_FORMAT_GROUP = 1U << 3, + + PERF_FORMAT_MAX = 1U << 4, /* non-ABI */ }; +#define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */ + /* * Hardware event to monitor via a performance monitoring counter: */ -struct perf_counter_hw_event { +struct perf_counter_attr { + /* - * The MSB of the config word signifies if the rest contains cpu - * specific (raw) counter configuration data, if unset, the next - * 7 bits are an event type and the rest of the bits are the event - * identifier. + * 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 irq_period; - __u64 irq_freq; + __u64 sample_period; + __u64 sample_freq; }; - __u32 record_type; - __u32 read_format; + __u64 sample_type; + __u64 read_format; __u64 disabled : 1, /* off by default */ - nmi : 1, /* NMI sampling */ inherit : 1, /* children inherit it */ pinned : 1, /* must always be on PMU */ exclusive : 1, /* only group on PMU */ @@ -148,26 +198,33 @@ struct perf_counter_hw_event { exclude_hv : 1, /* ditto hypervisor */ exclude_idle : 1, /* don't count when idle */ mmap : 1, /* include mmap data */ - munmap : 1, /* include munmap data */ comm : 1, /* include comm data */ freq : 1, /* use freq, not period */ + inherit_stat : 1, /* per task counts */ + enable_on_exec : 1, /* next exec enables */ + task : 1, /* trace fork/exit */ + watermark : 1, /* wakeup_watermark */ - __reserved_1 : 51; + __reserved_1 : 49; - __u32 extra_config_len; - __u32 wakeup_events; /* wakeup every n events */ + union { + __u32 wakeup_events; /* wakeup every n events */ + __u32 wakeup_watermark; /* bytes before wakeup */ + }; + __u32 __reserved_2; - __u64 __reserved_2; __u64 __reserved_3; }; /* * Ioctls that can be done on a perf counter fd: */ -#define PERF_COUNTER_IOC_ENABLE _IOW('$', 0, u32) -#define PERF_COUNTER_IOC_DISABLE _IOW('$', 1, u32) -#define PERF_COUNTER_IOC_REFRESH _IOW('$', 2, u32) -#define PERF_COUNTER_IOC_RESET _IOW('$', 3, u32) +#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('$', 4, u64) +#define PERF_COUNTER_IOC_SET_OUTPUT _IO ('$', 5) enum perf_counter_ioc_flags { PERF_IOC_FLAG_GROUP = 1U << 0, @@ -205,22 +262,35 @@ struct perf_counter_mmap_page { __u32 lock; /* seqlock for synchronization */ __u32 index; /* hardware counter identifier */ __s64 offset; /* add to hardware counter value */ + __u64 time_enabled; /* time counter active */ + __u64 time_running; /* time counter on cpu */ + + /* + * Hole for extension of the self monitor capabilities + */ + + __u64 __reserved[123]; /* align to 1k */ /* * Control data for the mmap() data buffer. * - * User-space reading this value should issue an rmb(), on SMP capable - * platforms, after reading this value -- see perf_counter_wakeup(). + * 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. */ - __u32 data_head; /* head in the data section */ + __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) +#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) struct perf_event_header { __u32 type; @@ -235,408 +305,137 @@ enum perf_event_type { * correlate userspace IPs to code. They have the following structure: * * struct { - * struct perf_event_header header; + * struct perf_event_header header; * - * u32 pid, tid; - * u64 addr; - * u64 len; - * u64 pgoff; - * char filename[]; + * u32 pid, tid; + * u64 addr; + * u64 len; + * u64 pgoff; + * char filename[]; * }; */ PERF_EVENT_MMAP = 1, - PERF_EVENT_MUNMAP = 2, /* * struct { - * struct perf_event_header header; - * - * u32 pid, tid; - * char comm[]; + * struct perf_event_header header; + * u64 id; + * u64 lost; * }; */ - PERF_EVENT_COMM = 3, + PERF_EVENT_LOST = 2, /* - * When header.misc & PERF_EVENT_MISC_OVERFLOW the event_type field - * will be PERF_RECORD_* - * * struct { - * struct perf_event_header header; - * - * { u64 ip; } && PERF_RECORD_IP - * { u32 pid, tid; } && PERF_RECORD_TID - * { u64 time; } && PERF_RECORD_TIME - * { u64 addr; } && PERF_RECORD_ADDR - * { u64 config; } && PERF_RECORD_CONFIG - * { u32 cpu, res; } && PERF_RECORD_CPU - * - * { u64 nr; - * { u64 event, val; } cnt[nr]; } && PERF_RECORD_GROUP + * struct perf_event_header header; * - * { u16 nr, - * hv, - * kernel, - * user; - * u64 ips[nr]; } && PERF_RECORD_CALLCHAIN + * u32 pid, tid; + * char comm[]; * }; */ -}; - -#ifdef __KERNEL__ -/* - * Kernel-internal data types and definitions: - */ - -#ifdef CONFIG_PERF_COUNTERS -# include -#endif - -#include -#include -#include -#include -#include -#include -#include -#include - -struct task_struct; - -static inline u64 perf_event_raw(struct perf_counter_hw_event *hw_event) -{ - return hw_event->config & PERF_COUNTER_RAW_MASK; -} - -static inline u64 perf_event_config(struct perf_counter_hw_event *hw_event) -{ - return hw_event->config & PERF_COUNTER_CONFIG_MASK; -} - -static inline u64 perf_event_type(struct perf_counter_hw_event *hw_event) -{ - return (hw_event->config & PERF_COUNTER_TYPE_MASK) >> - PERF_COUNTER_TYPE_SHIFT; -} - -static inline u64 perf_event_id(struct perf_counter_hw_event *hw_event) -{ - return hw_event->config & PERF_COUNTER_EVENT_MASK; -} - -/** - * 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 nmi; - int idx; - }; - union { /* software */ - atomic64_t count; - struct hrtimer hrtimer; - }; - }; - atomic64_t prev_count; - u64 irq_period; - atomic64_t period_left; - u64 interrupts; -#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); -}; - -/** - * 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 nr_locked; /* nr pages mlocked */ - - atomic_t poll; /* POLL_ for wakeups */ - atomic_t head; /* write position */ - atomic_t events; /* event limit */ - - atomic_t done_head; /* completed head */ - atomic_t lock; /* concurrent writes */ - - atomic_t wakeup; /* needs a wakeup */ - - 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; - enum perf_counter_active_state prev_state; - atomic64_t count; + PERF_EVENT_COMM = 3, /* - * 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. + * struct { + * struct perf_event_header header; + * u32 pid, ppid; + * u32 tid, ptid; + * u64 time; + * }; */ - u64 total_time_enabled; - u64 total_time_running; + PERF_EVENT_EXIT = 4, /* - * 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. + * struct { + * struct perf_event_header header; + * u64 time; + * u64 id; + * u64 stream_id; + * }; */ - u64 tstamp_enabled; - u64 tstamp_running; - u64 tstamp_stopped; - - struct perf_counter_hw_event hw_event; - struct hw_perf_counter hw; - - struct perf_counter_context *ctx; - struct task_struct *task; - struct file *filp; - - struct perf_counter *parent; - struct list_head child_list; + PERF_EVENT_THROTTLE = 5, + PERF_EVENT_UNTHROTTLE = 6, /* - * These accumulate total time (in nanoseconds) that children - * counters have been enabled and running, respectively. + * struct { + * struct perf_event_header header; + * u32 pid, ppid; + * u32 tid, ptid; + * { u64 time; } && PERF_SAMPLE_TIME + * }; */ - atomic64_t child_total_time_enabled; - atomic64_t child_total_time_running; + PERF_EVENT_FORK = 7, /* - * Protect attach/detach and child_list: + * struct { + * struct perf_event_header header; + * u32 pid, tid; + * + * struct read_format values; + * }; */ - struct mutex mutex; - - int oncpu; - int cpu; - - /* 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; + PERF_EVENT_READ = 8, - void (*destroy)(struct perf_counter *); - struct rcu_head rcu_head; -#endif -}; - -/** - * struct perf_counter_context - counter context structure - * - * Used as a container for task counters and CPU counters as well: - */ -struct perf_counter_context { -#ifdef CONFIG_PERF_COUNTERS /* - * 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 { + * 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 id; } && PERF_SAMPLE_ID + * { u64 stream_id;} && PERF_SAMPLE_STREAM_ID + * { u32 cpu, res; } && PERF_SAMPLE_CPU + * { u64 period; } && PERF_SAMPLE_PERIOD + * + * { struct read_format values; } && PERF_SAMPLE_READ + * + * { u64 nr, + * u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN + * + * # + * # The RAW record below is opaque data wrt the ABI + * # + * # That is, the ABI doesn't make any promises wrt to + * # the stability of its content, it may vary depending + * # on event, hardware, kernel version and phase of + * # the moon. + * # + * # In other words, PERF_SAMPLE_RAW contents are not an ABI. + * # + * + * { u32 size; + * char data[size];}&& PERF_SAMPLE_RAW + * }; */ - struct mutex mutex; - - struct list_head counter_list; - struct list_head event_list; - int nr_counters; - int nr_active; - int is_active; - struct task_struct *task; + PERF_EVENT_SAMPLE = 9, - /* - * Context clock, runs when context enabled. - */ - u64 time; - u64 timestamp; -#endif + PERF_EVENT_MAX, /* non-ABI */ }; -/** - * 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; +enum perf_callchain_context { + PERF_CONTEXT_HV = (__u64)-32, + PERF_CONTEXT_KERNEL = (__u64)-128, + PERF_CONTEXT_USER = (__u64)-512, - /* - * Recursion avoidance: - * - * task, softirq, irq, nmi context - */ - int recursion[4]; + PERF_CONTEXT_GUEST = (__u64)-2048, + PERF_CONTEXT_GUEST_KERNEL = (__u64)-2176, + PERF_CONTEXT_GUEST_USER = (__u64)-2560, + + PERF_CONTEXT_MAX = (__u64)-4095, }; -#ifdef CONFIG_PERF_COUNTERS +#define PERF_FLAG_FD_NO_GROUP (1U << 0) +#define PERF_FLAG_FD_OUTPUT (1U << 1) /* - * Set by architecture code: + * In case some app still references the old symbols: */ -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, int cpu); -extern void perf_counter_task_tick(struct task_struct *task, int cpu); -extern void perf_counter_init_task(struct task_struct *child); -extern void perf_counter_exit_task(struct task_struct *child); -extern void perf_counter_do_pending(void); -extern void perf_counter_print_debug(void); -extern void perf_counter_unthrottle(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); - -extern int perf_counter_overflow(struct perf_counter *counter, - int nmi, struct pt_regs *regs, u64 addr); -/* - * Return 1 for a software counter, 0 for a hardware counter - */ -static inline int is_software_counter(struct perf_counter *counter) -{ - return !perf_event_raw(&counter->hw_event) && - perf_event_type(&counter->hw_event) != PERF_TYPE_HARDWARE; -} - -extern void perf_swcounter_event(u32, u64, int, struct pt_regs *, u64); - -extern void perf_counter_mmap(unsigned long addr, unsigned long len, - unsigned long pgoff, struct file *file); -extern void perf_counter_munmap(unsigned long addr, unsigned long len, - unsigned long pgoff, struct file *file); +#define __NR_perf_counter_open __NR_perf_event_open -extern void perf_counter_comm(struct task_struct *tsk); - -#define MAX_STACK_DEPTH 255 - -struct perf_callchain_entry { - u16 nr, hv, kernel, user; - u64 ip[MAX_STACK_DEPTH]; -}; +#define PR_TASK_PERF_COUNTERS_DISABLE PR_TASK_PERF_EVENTS_DISABLE +#define PR_TASK_PERF_COUNTERS_ENABLE PR_TASK_PERF_EVENTS_ENABLE -extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs); - -extern int sysctl_perf_counter_priv; -extern int sysctl_perf_counter_mlock; - -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, int cpu) { } -static inline void -perf_counter_task_tick(struct task_struct *task, int cpu) { } -static inline void perf_counter_init_task(struct task_struct *child) { } -static inline void perf_counter_exit_task(struct task_struct *child) { } -static inline void perf_counter_do_pending(void) { } -static inline void perf_counter_print_debug(void) { } -static inline void perf_counter_unthrottle(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(unsigned long addr, unsigned long len, - unsigned long pgoff, struct file *file) { } - -static inline void -perf_counter_munmap(unsigned long addr, unsigned long len, - unsigned long pgoff, struct file *file) { } - -static inline void perf_counter_comm(struct task_struct *tsk) { } -static inline void perf_counter_init(void) { } -#endif - -#endif /* __KERNEL__ */ #endif /* _LINUX_PERF_COUNTER_H */