/*
- * Performance counters:
+ * Performance events:
*
* Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
* Copyright (C) 2008-2009, Red Hat, Inc., Ingo Molnar
*
* For licencing details see kernel-base/COPYING
*/
-#ifndef _LINUX_PERF_COUNTER_H
-#define _LINUX_PERF_COUNTER_H
+#ifndef _LINUX_PERF_EVENT_H
+#define _LINUX_PERF_EVENT_H
#include <linux/types.h>
#include <linux/ioctl.h>
};
/*
- * Generalized performance counter event types, used by the
- * attr.event_id parameter of the sys_perf_counter_open()
+ * Generalized performance event event_id types, used by the
+ * attr.event_id parameter of the sys_perf_event_open()
* syscall:
*/
enum perf_hw_id {
};
/*
- * Generalized hardware cache counters:
+ * Generalized hardware cache events:
*
* { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x
* { read, write, prefetch } x
};
/*
- * Special "software" counters provided by the kernel, even if the hardware
- * does not support performance counters. These counters measure various
+ * Special "software" events provided by the kernel, even if the hardware
+ * does not support performance events. These events measure various
* physical and sw events of the kernel (and allow the profiling of them as
* well):
*/
* Bits that can be set in attr.sample_type to request information
* in the overflow packets.
*/
-enum perf_counter_sample_format {
+enum perf_event_sample_format {
PERF_SAMPLE_IP = 1U << 0,
PERF_SAMPLE_TID = 1U << 1,
PERF_SAMPLE_TIME = 1U << 2,
};
/*
- * The format of the data returned by read() on a perf counter fd,
+ * The format of the data returned by read() on a perf event fd,
* as specified by attr.read_format:
*
* struct read_format {
* } && PERF_FORMAT_GROUP
* };
*/
-enum perf_counter_read_format {
+enum perf_event_read_format {
PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0,
PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1,
PERF_FORMAT_ID = 1U << 2,
#define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */
/*
- * Hardware event to monitor via a performance monitoring counter:
+ * Hardware event_id to monitor via a performance monitoring event:
*/
-struct perf_counter_attr {
+struct perf_event_attr {
/*
* Major type: hardware/software/tracepoint/etc.
};
/*
- * Ioctls that can be done on a perf counter fd:
+ * Ioctls that can be done on a perf event 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('$', 4, u64)
-#define PERF_COUNTER_IOC_SET_OUTPUT _IO ('$', 5)
-
-enum perf_counter_ioc_flags {
+#define PERF_EVENT_IOC_ENABLE _IO ('$', 0)
+#define PERF_EVENT_IOC_DISABLE _IO ('$', 1)
+#define PERF_EVENT_IOC_REFRESH _IO ('$', 2)
+#define PERF_EVENT_IOC_RESET _IO ('$', 3)
+#define PERF_EVENT_IOC_PERIOD _IOW('$', 4, u64)
+#define PERF_EVENT_IOC_SET_OUTPUT _IO ('$', 5)
+
+enum perf_event_ioc_flags {
PERF_IOC_FLAG_GROUP = 1U << 0,
};
/*
* Structure of the page that can be mapped via mmap
*/
-struct perf_counter_mmap_page {
+struct perf_event_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.
+ * Bits needed to read the hw events in user-space.
*
* u32 seq;
* s64 count;
* processes.
*/
__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 */
+ __u32 index; /* hardware event identifier */
+ __s64 offset; /* add to hardware event value */
+ __u64 time_enabled; /* time event active */
+ __u64 time_running; /* time event on cpu */
/*
* Hole for extension of the self monitor capabilities
*
* User-space reading the @data_head value should issue an rmb(), on
* SMP capable platforms, after reading this value -- see
- * perf_counter_wakeup().
+ * perf_event_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
__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_RECORD_MISC_CPUMODE_MASK (3 << 0)
+#define PERF_RECORD_MISC_CPUMODE_UNKNOWN (0 << 0)
+#define PERF_RECORD_MISC_KERNEL (1 << 0)
+#define PERF_RECORD_MISC_USER (2 << 0)
+#define PERF_RECORD_MISC_HYPERVISOR (3 << 0)
struct perf_event_header {
__u32 type;
* char filename[];
* };
*/
- PERF_EVENT_MMAP = 1,
+ PERF_RECORD_MMAP = 1,
/*
* struct {
* u64 lost;
* };
*/
- PERF_EVENT_LOST = 2,
+ PERF_RECORD_LOST = 2,
/*
* struct {
* char comm[];
* };
*/
- PERF_EVENT_COMM = 3,
+ PERF_RECORD_COMM = 3,
/*
* struct {
* u64 time;
* };
*/
- PERF_EVENT_EXIT = 4,
+ PERF_RECORD_EXIT = 4,
/*
* struct {
* u64 stream_id;
* };
*/
- PERF_EVENT_THROTTLE = 5,
- PERF_EVENT_UNTHROTTLE = 6,
+ PERF_RECORD_THROTTLE = 5,
+ PERF_RECORD_UNTHROTTLE = 6,
/*
* struct {
* { u64 time; } && PERF_SAMPLE_TIME
* };
*/
- PERF_EVENT_FORK = 7,
+ PERF_RECORD_FORK = 7,
/*
* struct {
* struct read_format values;
* };
*/
- PERF_EVENT_READ = 8,
+ PERF_RECORD_READ = 8,
/*
* struct {
* #
* # 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
+ * # on event_id, hardware, kernel version and phase of
* # the moon.
* #
* # In other words, PERF_SAMPLE_RAW contents are not an ABI.
* char data[size];}&& PERF_SAMPLE_RAW
* };
*/
- PERF_EVENT_SAMPLE = 9,
+ PERF_RECORD_SAMPLE = 9,
- PERF_EVENT_MAX, /* non-ABI */
+ PERF_RECORD_MAX, /* non-ABI */
};
enum perf_callchain_context {
* Kernel-internal data types and definitions:
*/
-#ifdef CONFIG_PERF_COUNTERS
-# include <asm/perf_counter.h>
+#ifdef CONFIG_PERF_EVENTS
+# include <asm/perf_event.h>
#endif
#include <linux/list.h>
struct task_struct;
/**
- * struct hw_perf_counter - performance counter hardware details:
+ * struct hw_perf_event - performance event hardware details:
*/
-struct hw_perf_counter {
-#ifdef CONFIG_PERF_COUNTERS
+struct hw_perf_event {
+#ifdef CONFIG_PERF_EVENTS
union {
struct { /* hardware */
u64 config;
unsigned long config_base;
- unsigned long counter_base;
+ unsigned long event_base;
int idx;
};
union { /* software */
#endif
};
-struct perf_counter;
+struct perf_event;
/**
* 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);
+ int (*enable) (struct perf_event *event);
+ void (*disable) (struct perf_event *event);
+ void (*read) (struct perf_event *event);
+ void (*unthrottle) (struct perf_event *event);
};
/**
- * enum perf_counter_active_state - the states of a counter
+ * enum perf_event_active_state - the states of a event
*/
-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,
+enum perf_event_active_state {
+ PERF_EVENT_STATE_ERROR = -2,
+ PERF_EVENT_STATE_OFF = -1,
+ PERF_EVENT_STATE_INACTIVE = 0,
+ PERF_EVENT_STATE_ACTIVE = 1,
};
struct file;
int nr_locked; /* nr pages mlocked */
atomic_t poll; /* POLL_ for wakeups */
- atomic_t events; /* event limit */
+ atomic_t events; /* event_id limit */
atomic_long_t head; /* write position */
atomic_long_t done_head; /* completed head */
long watermark; /* wakeup watermark */
- struct perf_counter_mmap_page *user_page;
+ struct perf_event_mmap_page *user_page;
void *data_pages[0];
};
};
/**
- * struct perf_counter - performance counter kernel representation:
+ * struct perf_event - performance event kernel representation:
*/
-struct perf_counter {
-#ifdef CONFIG_PERF_COUNTERS
+struct perf_event {
+#ifdef CONFIG_PERF_EVENTS
struct list_head group_entry;
struct list_head event_entry;
struct list_head sibling_list;
int nr_siblings;
- struct perf_counter *group_leader;
- struct perf_counter *output;
+ struct perf_event *group_leader;
+ struct perf_event *output;
const struct pmu *pmu;
- enum perf_counter_active_state state;
+ enum perf_event_active_state state;
atomic64_t count;
/*
- * These are the total time in nanoseconds that the counter
+ * These are the total time in nanoseconds that the event
* has been enabled (i.e. eligible to run, and the task has
- * been scheduled in, if this is a per-task counter)
+ * been scheduled in, if this is a per-task event)
* 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.
+ * tstamp_stopped when the event 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
+ * and total_time_running when the event 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_enabled: the notional time when the event was enabled
+ * tstamp_running: the notional time when the event was scheduled on
* tstamp_stopped: in INACTIVE state, the notional time when the
- * counter was scheduled off.
+ * event was scheduled off.
*/
u64 tstamp_enabled;
u64 tstamp_running;
u64 tstamp_stopped;
- struct perf_counter_attr attr;
- struct hw_perf_counter hw;
+ struct perf_event_attr attr;
+ struct hw_perf_event hw;
- struct perf_counter_context *ctx;
+ struct perf_event_context *ctx;
struct file *filp;
/*
* These accumulate total time (in nanoseconds) that children
- * counters have been enabled and running, respectively.
+ * events have been enabled and running, respectively.
*/
atomic64_t child_total_time_enabled;
atomic64_t child_total_time_running;
*/
struct mutex child_mutex;
struct list_head child_list;
- struct perf_counter *parent;
+ struct perf_event *parent;
int oncpu;
int cpu;
atomic_t event_limit;
- void (*destroy)(struct perf_counter *);
+ void (*destroy)(struct perf_event *);
struct rcu_head rcu_head;
struct pid_namespace *ns;
};
/**
- * struct perf_counter_context - counter context structure
+ * struct perf_event_context - event context structure
*
- * Used as a container for task counters and CPU counters as well:
+ * Used as a container for task events and CPU events as well:
*/
-struct perf_counter_context {
+struct perf_event_context {
/*
- * Protect the states of the counters in the list,
+ * Protect the states of the events in the list,
* nr_active, and the list:
*/
spinlock_t lock;
/*
- * Protect the list of counters. Locking either mutex or lock
+ * Protect the list of events. 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 list_head group_list;
struct list_head event_list;
- int nr_counters;
+ int nr_events;
int nr_active;
int is_active;
int nr_stat;
* These fields let us detect when two contexts have both
* been cloned (inherited) from a common ancestor.
*/
- struct perf_counter_context *parent_ctx;
+ struct perf_event_context *parent_ctx;
u64 parent_gen;
u64 generation;
int pin_count;
};
/**
- * struct perf_counter_cpu_context - per cpu counter context structure
+ * struct perf_event_cpu_context - per cpu event context structure
*/
struct perf_cpu_context {
- struct perf_counter_context ctx;
- struct perf_counter_context *task_ctx;
+ struct perf_event_context ctx;
+ struct perf_event_context *task_ctx;
int active_oncpu;
int max_pertask;
int exclusive;
};
struct perf_output_handle {
- struct perf_counter *counter;
+ struct perf_event *event;
struct perf_mmap_data *data;
unsigned long head;
unsigned long offset;
unsigned long flags;
};
-#ifdef CONFIG_PERF_COUNTERS
+#ifdef CONFIG_PERF_EVENTS
/*
* Set by architecture code:
*/
-extern int perf_max_counters;
+extern int perf_max_events;
-extern const struct pmu *hw_perf_counter_init(struct perf_counter *counter);
+extern const struct pmu *hw_perf_event_init(struct perf_event *event);
-extern void perf_counter_task_sched_in(struct task_struct *task, int cpu);
-extern void perf_counter_task_sched_out(struct task_struct *task,
+extern void perf_event_task_sched_in(struct task_struct *task, int cpu);
+extern void perf_event_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_event_task_tick(struct task_struct *task, int cpu);
+extern int perf_event_init_task(struct task_struct *child);
+extern void perf_event_exit_task(struct task_struct *child);
+extern void perf_event_free_task(struct task_struct *task);
+extern void set_perf_event_pending(void);
+extern void perf_event_do_pending(void);
+extern void perf_event_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,
+extern int perf_event_task_disable(void);
+extern int perf_event_task_enable(void);
+extern int hw_perf_group_sched_in(struct perf_event *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_event_context *ctx, int cpu);
+extern void perf_event_update_userpage(struct perf_event *event);
struct perf_sample_data {
u64 type;
extern void perf_output_sample(struct perf_output_handle *handle,
struct perf_event_header *header,
struct perf_sample_data *data,
- struct perf_counter *counter);
+ struct perf_event *event);
extern void perf_prepare_sample(struct perf_event_header *header,
struct perf_sample_data *data,
- struct perf_counter *counter,
+ struct perf_event *event,
struct pt_regs *regs);
-extern int perf_counter_overflow(struct perf_counter *counter, int nmi,
+extern int perf_event_overflow(struct perf_event *event, int nmi,
struct perf_sample_data *data,
struct pt_regs *regs);
/*
- * Return 1 for a software counter, 0 for a hardware counter
+ * Return 1 for a software event, 0 for a hardware event
*/
-static inline int is_software_counter(struct perf_counter *counter)
+static inline int is_software_event(struct perf_event *event)
{
- return (counter->attr.type != PERF_TYPE_RAW) &&
- (counter->attr.type != PERF_TYPE_HARDWARE) &&
- (counter->attr.type != PERF_TYPE_HW_CACHE);
+ return (event->attr.type != PERF_TYPE_RAW) &&
+ (event->attr.type != PERF_TYPE_HARDWARE) &&
+ (event->attr.type != PERF_TYPE_HW_CACHE);
}
-extern atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX];
+extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX];
-extern void __perf_swcounter_event(u32, u64, int, struct pt_regs *, u64);
+extern void __perf_sw_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)
+perf_sw_event(u32 event_id, 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);
+ if (atomic_read(&perf_swevent_enabled[event_id]))
+ __perf_sw_event(event_id, nr, nmi, regs, addr);
}
-extern void __perf_counter_mmap(struct vm_area_struct *vma);
+extern void __perf_event_mmap(struct vm_area_struct *vma);
-static inline void perf_counter_mmap(struct vm_area_struct *vma)
+static inline void perf_event_mmap(struct vm_area_struct *vma)
{
if (vma->vm_flags & VM_EXEC)
- __perf_counter_mmap(vma);
+ __perf_event_mmap(vma);
}
-extern void perf_counter_comm(struct task_struct *tsk);
-extern void perf_counter_fork(struct task_struct *tsk);
+extern void perf_event_comm(struct task_struct *tsk);
+extern void perf_event_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 int sysctl_perf_event_paranoid;
+extern int sysctl_perf_event_mlock;
+extern int sysctl_perf_event_sample_rate;
-extern void perf_counter_init(void);
-extern void perf_tpcounter_event(int event_id, u64 addr, u64 count,
+extern void perf_event_init(void);
+extern void perf_tp_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_misc_flags(regs) (user_mode(regs) ? PERF_RECORD_MISC_USER : \
+ PERF_RECORD_MISC_KERNEL)
#define perf_instruction_pointer(regs) instruction_pointer(regs)
#endif
extern int perf_output_begin(struct perf_output_handle *handle,
- struct perf_counter *counter, unsigned int size,
+ struct perf_event *event, unsigned int size,
int nmi, int sample);
extern void perf_output_end(struct perf_output_handle *handle);
extern void perf_output_copy(struct perf_output_handle *handle,
const void *buf, unsigned int len);
#else
static inline void
-perf_counter_task_sched_in(struct task_struct *task, int cpu) { }
+perf_event_task_sched_in(struct task_struct *task, int cpu) { }
static inline void
-perf_counter_task_sched_out(struct task_struct *task,
+perf_event_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) { }
+perf_event_task_tick(struct task_struct *task, int cpu) { }
+static inline int perf_event_init_task(struct task_struct *child) { return 0; }
+static inline void perf_event_exit_task(struct task_struct *child) { }
+static inline void perf_event_free_task(struct task_struct *task) { }
+static inline void perf_event_do_pending(void) { }
+static inline void perf_event_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 int perf_event_task_disable(void) { return -EINVAL; }
+static inline int perf_event_task_enable(void) { return -EINVAL; }
static inline void
-perf_swcounter_event(u32 event, u64 nr, int nmi,
+perf_sw_event(u32 event_id, 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) { }
+static inline void perf_event_mmap(struct vm_area_struct *vma) { }
+static inline void perf_event_comm(struct task_struct *tsk) { }
+static inline void perf_event_fork(struct task_struct *tsk) { }
+static inline void perf_event_init(void) { }
#endif
perf_output_copy((handle), &(x), sizeof(x))
#endif /* __KERNEL__ */
-#endif /* _LINUX_PERF_COUNTER_H */
+#endif /* _LINUX_PERF_EVENT_H */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff