/*
- * 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.
+ *
+ * Performance events:
*
* Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
* Copyright (C) 2008-2009, Red Hat, Inc., Ingo Molnar
* 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 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
+ * { 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 {
/*
* struct {
- * struct perf_event_header header;
- * u64 id;
- * u64 lost;
+ * struct perf_event_header header;
+ * u64 id;
+ * u64 lost;
* };
*/
PERF_EVENT_LOST = 2,
* struct perf_event_header header;
* u32 pid, ppid;
* u32 tid, ptid;
+ * u64 time;
* };
*/
PERF_EVENT_EXIT = 4,
* struct perf_event_header header;
* u32 pid, ppid;
* u32 tid, ptid;
+ * { u64 time; } && PERF_SAMPLE_TIME
* };
*/
PERF_EVENT_FORK = 7,
/*
* struct {
- * struct perf_event_header header;
- * u32 pid, tid;
+ * struct perf_event_header header;
+ * u32 pid, tid;
*
- * struct read_format values;
+ * struct read_format values;
* };
*/
PERF_EVENT_READ = 8,
* { u64 id; } && PERF_SAMPLE_ID
* { u64 stream_id;} && PERF_SAMPLE_STREAM_ID
* { u32 cpu, res; } && PERF_SAMPLE_CPU
- * { u64 period; } && PERF_SAMPLE_PERIOD
+ * { 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.
- * #
+ * #
+ * # 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
PERF_CONTEXT_MAX = (__u64)-4095,
};
-#define PERF_FLAG_FD_NO_GROUP (1U << 0)
-#define PERF_FLAG_FD_OUTPUT (1U << 1)
+#define PERF_FLAG_FD_NO_GROUP (1U << 0)
+#define PERF_FLAG_FD_OUTPUT (1U << 1)
-#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 perf_raw_record {
- u32 size;
- void *data;
-};
-
-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
+ * In case some app still references the old symbols:
*/
-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 */
-
- long watermark; /* wakeup watermark */
-
- 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;
- struct perf_counter *output;
- const struct pmu *pmu;
-
- enum perf_counter_active_state state;
- atomic64_t count;
+#define __NR_perf_counter_open __NR_perf_event_open
- /*
- * 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;
+#define PR_TASK_PERF_COUNTERS_DISABLE PR_TASK_PERF_EVENTS_DISABLE
+#define PR_TASK_PERF_COUNTERS_ENABLE PR_TASK_PERF_EVENTS_ENABLE
- /*
- * 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;
- int nr_stat;
- 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;
- struct perf_raw_record *raw;
-};
-
-extern int perf_counter_overflow(struct perf_counter *counter, int nmi,
- struct perf_sample_data *data);
-extern void perf_counter_output(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 atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX];
-
-extern void __perf_swcounter_event(u32, u64, int, struct pt_regs *, u64);
-
-static inline void
-perf_swcounter_event(u32 event, u64 nr, int nmi, struct pt_regs *regs, u64 addr)
-{
- if (atomic_read(&perf_swcounter_enabled[event]))
- __perf_swcounter_event(event, nr, nmi, regs, addr);
-}
-
-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);
-extern void perf_tpcounter_event(int event_id, u64 addr, u64 count,
- void *record, int entry_size);
-
-#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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