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Merge remote branch 'tip/perf/core' into oprofile/core

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Conflicts:
	arch/arm/oprofile/common.c
	kernel/perf_event.c
This commit is contained in:
Robert Richter
2010-10-15 12:45:00 +02:00
parent 7df01d96b2 0fdf13606b
commit 6268464b37
463 changed files with 8396 additions and 3865 deletions
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159
include/linux/perf_event.h
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@@ -529,7 +529,6 @@ struct hw_perf_event {
int last_cpu;
};
struct { /* software */
s64 remaining;
struct hrtimer hrtimer;
};
#ifdef CONFIG_HAVE_HW_BREAKPOINT
@@ -539,6 +538,7 @@ struct hw_perf_event {
};
#endif
};
int state;
local64_t prev_count;
u64 sample_period;
u64 last_period;
@@ -550,6 +550,13 @@ struct hw_perf_event {
#endif
};
/*
* hw_perf_event::state flags
*/
#define PERF_HES_STOPPED 0x01 /* the counter is stopped */
#define PERF_HES_UPTODATE 0x02 /* event->count up-to-date */
#define PERF_HES_ARCH 0x04
struct perf_event;
/*
@@ -561,36 +568,70 @@ struct perf_event;
* struct pmu - generic performance monitoring unit
*/
struct pmu {
int (*enable) (struct perf_event *event);
void (*disable) (struct perf_event *event);
int (*start) (struct perf_event *event);
void (*stop) (struct perf_event *event);
struct list_head entry;
int * __percpu pmu_disable_count;
struct perf_cpu_context * __percpu pmu_cpu_context;
int task_ctx_nr;
/*
* Fully disable/enable this PMU, can be used to protect from the PMI
* as well as for lazy/batch writing of the MSRs.
*/
void (*pmu_enable) (struct pmu *pmu); /* optional */
void (*pmu_disable) (struct pmu *pmu); /* optional */
/*
* Try and initialize the event for this PMU.
* Should return -ENOENT when the @event doesn't match this PMU.
*/
int (*event_init) (struct perf_event *event);
#define PERF_EF_START 0x01 /* start the counter when adding */
#define PERF_EF_RELOAD 0x02 /* reload the counter when starting */
#define PERF_EF_UPDATE 0x04 /* update the counter when stopping */
/*
* Adds/Removes a counter to/from the PMU, can be done inside
* a transaction, see the ->*_txn() methods.
*/
int (*add) (struct perf_event *event, int flags);
void (*del) (struct perf_event *event, int flags);
/*
* Starts/Stops a counter present on the PMU. The PMI handler
* should stop the counter when perf_event_overflow() returns
* !0. ->start() will be used to continue.
*/
void (*start) (struct perf_event *event, int flags);
void (*stop) (struct perf_event *event, int flags);
/*
* Updates the counter value of the event.
*/
void (*read) (struct perf_event *event);
void (*unthrottle) (struct perf_event *event);
/*
* Group events scheduling is treated as a transaction, add group
* events as a whole and perform one schedulability test. If the test
* fails, roll back the whole group
* Group events scheduling is treated as a transaction, add
* group events as a whole and perform one schedulability test.
* If the test fails, roll back the whole group
*
* Start the transaction, after this ->add() doesn't need to
* do schedulability tests.
*/
void (*start_txn) (struct pmu *pmu); /* optional */
/*
* Start the transaction, after this ->enable() doesn't need
* to do schedulability tests.
*/
void (*start_txn) (const struct pmu *pmu);
/*
* If ->start_txn() disabled the ->enable() schedulability test
* If ->start_txn() disabled the ->add() schedulability test
* then ->commit_txn() is required to perform one. On success
* the transaction is closed. On error the transaction is kept
* open until ->cancel_txn() is called.
*/
int (*commit_txn) (const struct pmu *pmu);
int (*commit_txn) (struct pmu *pmu); /* optional */
/*
* Will cancel the transaction, assumes ->disable() is called for
* each successfull ->enable() during the transaction.
* Will cancel the transaction, assumes ->del() is called
* for each successfull ->add() during the transaction.
*/
void (*cancel_txn) (const struct pmu *pmu);
void (*cancel_txn) (struct pmu *pmu); /* optional */
};
/**
@@ -669,7 +710,7 @@ struct perf_event {
int nr_siblings;
int group_flags;
struct perf_event *group_leader;
const struct pmu *pmu;
struct pmu *pmu;
enum perf_event_active_state state;
unsigned int attach_state;
@@ -763,12 +804,19 @@ struct perf_event {
#endif /* CONFIG_PERF_EVENTS */
};
enum perf_event_context_type {
task_context,
cpu_context,
};
/**
* struct perf_event_context - event context structure
*
* Used as a container for task events and CPU events as well:
*/
struct perf_event_context {
enum perf_event_context_type type;
struct pmu *pmu;
/*
* Protect the states of the events in the list,
* nr_active, and the list:
@@ -808,6 +856,12 @@ struct perf_event_context {
struct rcu_head rcu_head;
};
/*
* Number of contexts where an event can trigger:
* task, softirq, hardirq, nmi.
*/
#define PERF_NR_CONTEXTS 4
/**
* struct perf_event_cpu_context - per cpu event context structure
*/
@@ -815,18 +869,9 @@ struct perf_cpu_context {
struct perf_event_context ctx;
struct perf_event_context *task_ctx;
int active_oncpu;
int max_pertask;
int exclusive;
struct swevent_hlist *swevent_hlist;
struct mutex hlist_mutex;
int hlist_refcount;
/*
* Recursion avoidance:
*
* task, softirq, irq, nmi context
*/
int recursion[4];
struct list_head rotation_list;
int jiffies_interval;
};
struct perf_output_handle {
@@ -842,28 +887,22 @@ struct perf_output_handle {
#ifdef CONFIG_PERF_EVENTS
/*
* Set by architecture code:
*/
extern int perf_max_events;
extern const struct pmu *hw_perf_event_init(struct perf_event *event);
extern int perf_pmu_register(struct pmu *pmu);
extern void perf_pmu_unregister(struct pmu *pmu);
extern int perf_num_counters(void);
extern const char *perf_pmu_name(void);
extern void perf_event_task_sched_in(struct task_struct *task);
extern void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next);
extern void perf_event_task_tick(struct task_struct *task);
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 perf_event_delayed_put(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 void perf_pmu_disable(struct pmu *pmu);
extern void perf_pmu_enable(struct pmu *pmu);
extern int perf_event_task_disable(void);
extern int perf_event_task_enable(void);
extern void perf_event_update_userpage(struct perf_event *event);
@@ -871,7 +910,7 @@ extern int perf_event_release_kernel(struct perf_event *event);
extern struct perf_event *
perf_event_create_kernel_counter(struct perf_event_attr *attr,
int cpu,
pid_t pid,
struct task_struct *task,
perf_overflow_handler_t callback);
extern u64 perf_event_read_value(struct perf_event *event,
u64 *enabled, u64 *running);
@@ -922,14 +961,7 @@ extern int perf_event_overflow(struct perf_event *event, int nmi,
*/
static inline int is_software_event(struct perf_event *event)
{
switch (event->attr.type) {
case PERF_TYPE_SOFTWARE:
case PERF_TYPE_TRACEPOINT:
/* for now the breakpoint stuff also works as software event */
case PERF_TYPE_BREAKPOINT:
return 1;
}
return 0;
return event->pmu->task_ctx_nr == perf_sw_context;
}
extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX];
@@ -978,7 +1010,21 @@ extern int perf_unregister_guest_info_callbacks(struct perf_guest_info_callbacks
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);
/* Callchains */
DECLARE_PER_CPU(struct perf_callchain_entry, perf_callchain_entry);
extern void perf_callchain_user(struct perf_callchain_entry *entry,
struct pt_regs *regs);
extern void perf_callchain_kernel(struct perf_callchain_entry *entry,
struct pt_regs *regs);
static inline void
perf_callchain_store(struct perf_callchain_entry *entry, u64 ip)
{
if (entry->nr < PERF_MAX_STACK_DEPTH)
entry->ip[entry->nr++] = ip;
}
extern int sysctl_perf_event_paranoid;
extern int sysctl_perf_event_mlock;
@@ -1021,21 +1067,19 @@ extern int perf_swevent_get_recursion_context(void);
extern void perf_swevent_put_recursion_context(int rctx);
extern void perf_event_enable(struct perf_event *event);
extern void perf_event_disable(struct perf_event *event);
extern void perf_event_task_tick(void);
#else
static inline void
perf_event_task_sched_in(struct task_struct *task) { }
static inline void
perf_event_task_sched_out(struct task_struct *task,
struct task_struct *next) { }
static inline void
perf_event_task_tick(struct task_struct *task) { }
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_delayed_put(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_event_task_disable(void) { return -EINVAL; }
static inline int perf_event_task_enable(void) { return -EINVAL; }
@@ -1058,6 +1102,7 @@ static inline int perf_swevent_get_recursion_context(void) { return -1; }
static inline void perf_swevent_put_recursion_context(int rctx) { }
static inline void perf_event_enable(struct perf_event *event) { }
static inline void perf_event_disable(struct perf_event *event) { }
static inline void perf_event_task_tick(void) { }
#endif
#define perf_output_put(handle, x) \