/*
* Performance counters:
*
- * Copyright(C) 2008, Thomas Gleixner <tglx@linutronix.de>
- * Copyright(C) 2008, Red Hat, Inc., Ingo Molnar
+ * 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
+ * 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 <asm/atomic.h>
-
-#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>
-
-struct task_struct;
+#include <linux/types.h>
+#include <linux/ioctl.h>
+#include <asm/byteorder.h>
/*
* User-space ABI bits:
*/
/*
- * Generalized performance counter event types, used by the hw_event.type
- * parameter of the sys_perf_counter_open() syscall:
+ * 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 hw_event_types {
+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_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 {
- PERF_HW_EVENTS_MAX = 7,
+ /*
+ * Major type: hardware/software/tracepoint/etc.
+ */
+ __u32 type;
/*
- * 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):
+ * Size of the attr structure, for fwd/bwd compat.
*/
- PERF_COUNT_CPU_CLOCK = -1,
- PERF_COUNT_TASK_CLOCK = -2,
- PERF_COUNT_PAGE_FAULTS = -3,
- PERF_COUNT_CONTEXT_SWITCHES = -4,
- PERF_COUNT_CPU_MIGRATIONS = -5,
+ __u32 size;
- PERF_SW_EVENTS_MIN = -6,
+ /*
+ * 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;
};
/*
- * IRQ-notification data record type:
+ * Ioctls that can be done on a perf counter fd:
*/
-enum perf_counter_record_type {
- PERF_RECORD_SIMPLE = 0,
- PERF_RECORD_IRQ = 1,
- PERF_RECORD_GROUP = 2,
+#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,
};
/*
- * Hardware event to monitor via a performance monitoring counter:
+ * Structure of the page that can be mapped via mmap
*/
-struct perf_counter_hw_event {
- s64 type;
+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 */
+
+ /*
+ * Hole for extension of the self monitor capabilities
+ */
+
+ __u64 __reserved[125]; /* align to 1k */
+
+ /*
+ * 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,
- u64 irq_period;
- u32 record_type;
+ /*
+ * struct {
+ * struct perf_event_header header;
+ * u32 pid, ppid;
+ * };
+ */
+ PERF_EVENT_FORK = 7,
- u32 disabled : 1, /* off by default */
- nmi : 1, /* NMI sampling */
- raw : 1, /* raw event type */
- inherit : 1, /* children inherit it */
- __reserved_1 : 28;
+ /*
+ * 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,
- u64 __reserved_2;
+ PERF_CONTEXT_MAX = (__u64)-4095,
};
+#ifdef __KERNEL__
/*
- * Kernel-internal data types:
+ * 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
- u64 config;
- unsigned long config_base;
- unsigned long counter_base;
- int nmi;
- unsigned int idx;
+ 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 irq_period;
+ u64 sample_period;
+ u64 last_period;
atomic64_t period_left;
-#endif
-};
+ u64 interrupts;
-/*
- * Hardcoded buffer length limit for now, for IRQ-fed events:
- */
-#define PERF_DATA_BUFLEN 2048
-
-/**
- * struct perf_data - performance counter IRQ data sampling ...
- */
-struct perf_data {
- int len;
- int rd_idx;
- int overrun;
- u8 data[PERF_DATA_BUFLEN];
+ u64 freq_count;
+ u64 freq_interrupts;
+ u64 freq_stamp;
+#endif
};
struct perf_counter;
/**
- * struct hw_perf_counter_ops - performance counter hw ops
+ * struct pmu - generic performance monitoring unit
*/
-struct hw_perf_counter_ops {
+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 hw_perf_counter_ops *hw_ops;
+ const struct pmu *pmu;
enum perf_counter_active_state state;
atomic64_t count;
- struct perf_counter_hw_event hw_event;
+ /*
+ * 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 task_struct *task;
struct file *filp;
- struct perf_counter *parent;
/*
- * Protect attach/detach:
+ * These accumulate total time (in nanoseconds) that children
+ * counters have been enabled and running, respectively.
*/
- struct mutex mutex;
+ 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;
- /* read() / irq related data */
+ 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;
- /* optional: for NMIs */
- int wakeup_pending;
- struct perf_data *irqdata;
- struct perf_data *usrdata;
- struct perf_data data[2];
+ 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
};
* Used as a container for task counters and CPU counters as well:
*/
struct perf_counter_context {
-#ifdef CONFIG_PERF_COUNTERS
/*
- * Protect the list of counters:
+ * Protect the states of the counters in the list,
+ * nr_active, and the list:
*/
- spinlock_t lock;
+ 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;
- int nr_counters;
- int nr_active;
- struct task_struct *task;
-#endif
+ 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_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;
-#ifdef CONFIG_PERF_COUNTERS
-extern const struct hw_perf_counter_ops *
-hw_perf_counter_init(struct perf_counter *counter);
+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_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 void perf_counter_init_task(struct task_struct *child);
+extern int perf_counter_init_task(struct task_struct *child);
extern void perf_counter_exit_task(struct task_struct *child);
-extern void perf_counter_notify(struct pt_regs *regs);
+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 u64 hw_perf_save_disable(void);
-extern void hw_perf_restore(u64 ctrl);
+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 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);
+
+#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) { }
+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 void perf_counter_init_task(struct task_struct *child) { }
+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_notify(struct pt_regs *regs) { }
+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 hw_perf_restore(u64 ctrl) { }
-static inline u64 hw_perf_save_disable(void) { return 0; }
+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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