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-rw-r--r--kernel/perf_event.c (renamed from kernel/perf_counter.c)2422
1 files changed, 1211 insertions, 1211 deletions
diff --git a/kernel/perf_counter.c b/kernel/perf_event.c
index 62de0db8092b..6e8b99a04e1e 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_event.c
@@ -1,5 +1,5 @@
/*
- * Performance counter core code
+ * Performance event core code
*
* Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de>
* Copyright (C) 2008-2009 Red Hat, Inc., Ingo Molnar
@@ -26,66 +26,66 @@
#include <linux/syscalls.h>
#include <linux/anon_inodes.h>
#include <linux/kernel_stat.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
#include <asm/irq_regs.h>
/*
- * Each CPU has a list of per CPU counters:
+ * Each CPU has a list of per CPU events:
*/
DEFINE_PER_CPU(struct perf_cpu_context, perf_cpu_context);
-int perf_max_counters __read_mostly = 1;
+int perf_max_events __read_mostly = 1;
static int perf_reserved_percpu __read_mostly;
static int perf_overcommit __read_mostly = 1;
-static atomic_t nr_counters __read_mostly;
-static atomic_t nr_mmap_counters __read_mostly;
-static atomic_t nr_comm_counters __read_mostly;
-static atomic_t nr_task_counters __read_mostly;
+static atomic_t nr_events __read_mostly;
+static atomic_t nr_mmap_events __read_mostly;
+static atomic_t nr_comm_events __read_mostly;
+static atomic_t nr_task_events __read_mostly;
/*
- * perf counter paranoia level:
+ * perf event paranoia level:
* -1 - not paranoid at all
* 0 - disallow raw tracepoint access for unpriv
- * 1 - disallow cpu counters for unpriv
+ * 1 - disallow cpu events for unpriv
* 2 - disallow kernel profiling for unpriv
*/
-int sysctl_perf_counter_paranoid __read_mostly = 1;
+int sysctl_perf_event_paranoid __read_mostly = 1;
static inline bool perf_paranoid_tracepoint_raw(void)
{
- return sysctl_perf_counter_paranoid > -1;
+ return sysctl_perf_event_paranoid > -1;
}
static inline bool perf_paranoid_cpu(void)
{
- return sysctl_perf_counter_paranoid > 0;
+ return sysctl_perf_event_paranoid > 0;
}
static inline bool perf_paranoid_kernel(void)
{
- return sysctl_perf_counter_paranoid > 1;
+ return sysctl_perf_event_paranoid > 1;
}
-int sysctl_perf_counter_mlock __read_mostly = 512; /* 'free' kb per user */
+int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */
/*
- * max perf counter sample rate
+ * max perf event sample rate
*/
-int sysctl_perf_counter_sample_rate __read_mostly = 100000;
+int sysctl_perf_event_sample_rate __read_mostly = 100000;
-static atomic64_t perf_counter_id;
+static atomic64_t perf_event_id;
/*
- * Lock for (sysadmin-configurable) counter reservations:
+ * Lock for (sysadmin-configurable) event reservations:
*/
static DEFINE_SPINLOCK(perf_resource_lock);
/*
* Architecture provided APIs - weak aliases:
*/
-extern __weak const struct pmu *hw_perf_counter_init(struct perf_counter *counter)
+extern __weak const struct pmu *hw_perf_event_init(struct perf_event *event)
{
return NULL;
}
@@ -93,18 +93,18 @@ extern __weak const struct pmu *hw_perf_counter_init(struct perf_counter *counte
void __weak hw_perf_disable(void) { barrier(); }
void __weak hw_perf_enable(void) { barrier(); }
-void __weak hw_perf_counter_setup(int cpu) { barrier(); }
-void __weak hw_perf_counter_setup_online(int cpu) { barrier(); }
+void __weak hw_perf_event_setup(int cpu) { barrier(); }
+void __weak hw_perf_event_setup_online(int cpu) { barrier(); }
int __weak
-hw_perf_group_sched_in(struct perf_counter *group_leader,
+hw_perf_group_sched_in(struct perf_event *group_leader,
struct perf_cpu_context *cpuctx,
- struct perf_counter_context *ctx, int cpu)
+ struct perf_event_context *ctx, int cpu)
{
return 0;
}
-void __weak perf_counter_print_debug(void) { }
+void __weak perf_event_print_debug(void) { }
static DEFINE_PER_CPU(int, perf_disable_count);
@@ -130,20 +130,20 @@ void perf_enable(void)
hw_perf_enable();
}
-static void get_ctx(struct perf_counter_context *ctx)
+static void get_ctx(struct perf_event_context *ctx)
{
WARN_ON(!atomic_inc_not_zero(&ctx->refcount));
}
static void free_ctx(struct rcu_head *head)
{
- struct perf_counter_context *ctx;
+ struct perf_event_context *ctx;
- ctx = container_of(head, struct perf_counter_context, rcu_head);
+ ctx = container_of(head, struct perf_event_context, rcu_head);
kfree(ctx);
}
-static void put_ctx(struct perf_counter_context *ctx)
+static void put_ctx(struct perf_event_context *ctx)
{
if (atomic_dec_and_test(&ctx->refcount)) {
if (ctx->parent_ctx)
@@ -154,7 +154,7 @@ static void put_ctx(struct perf_counter_context *ctx)
}
}
-static void unclone_ctx(struct perf_counter_context *ctx)
+static void unclone_ctx(struct perf_event_context *ctx)
{
if (ctx->parent_ctx) {
put_ctx(ctx->parent_ctx);
@@ -163,37 +163,37 @@ static void unclone_ctx(struct perf_counter_context *ctx)
}
/*
- * If we inherit counters we want to return the parent counter id
+ * If we inherit events we want to return the parent event id
* to userspace.
*/
-static u64 primary_counter_id(struct perf_counter *counter)
+static u64 primary_event_id(struct perf_event *event)
{
- u64 id = counter->id;
+ u64 id = event->id;
- if (counter->parent)
- id = counter->parent->id;
+ if (event->parent)
+ id = event->parent->id;
return id;
}
/*
- * Get the perf_counter_context for a task and lock it.
+ * Get the perf_event_context for a task and lock it.
* This has to cope with with the fact that until it is locked,
* the context could get moved to another task.
*/
-static struct perf_counter_context *
+static struct perf_event_context *
perf_lock_task_context(struct task_struct *task, unsigned long *flags)
{
- struct perf_counter_context *ctx;
+ struct perf_event_context *ctx;
rcu_read_lock();
retry:
- ctx = rcu_dereference(task->perf_counter_ctxp);
+ ctx = rcu_dereference(task->perf_event_ctxp);
if (ctx) {
/*
* If this context is a clone of another, it might
* get swapped for another underneath us by
- * perf_counter_task_sched_out, though the
+ * perf_event_task_sched_out, though the
* rcu_read_lock() protects us from any context
* getting freed. Lock the context and check if it
* got swapped before we could get the lock, and retry
@@ -201,7 +201,7 @@ perf_lock_task_context(struct task_struct *task, unsigned long *flags)
* can't get swapped on us any more.
*/
spin_lock_irqsave(&ctx->lock, *flags);
- if (ctx != rcu_dereference(task->perf_counter_ctxp)) {
+ if (ctx != rcu_dereference(task->perf_event_ctxp)) {
spin_unlock_irqrestore(&ctx->lock, *flags);
goto retry;
}
@@ -220,9 +220,9 @@ perf_lock_task_context(struct task_struct *task, unsigned long *flags)
* can't get swapped to another task. This also increments its
* reference count so that the context can't get freed.
*/
-static struct perf_counter_context *perf_pin_task_context(struct task_struct *task)
+static struct perf_event_context *perf_pin_task_context(struct task_struct *task)
{
- struct perf_counter_context *ctx;
+ struct perf_event_context *ctx;
unsigned long flags;
ctx = perf_lock_task_context(task, &flags);
@@ -233,7 +233,7 @@ static struct perf_counter_context *perf_pin_task_context(struct task_struct *ta
return ctx;
}
-static void perf_unpin_context(struct perf_counter_context *ctx)
+static void perf_unpin_context(struct perf_event_context *ctx)
{
unsigned long flags;
@@ -244,59 +244,59 @@ static void perf_unpin_context(struct perf_counter_context *ctx)
}
/*
- * Add a counter from the lists for its context.
+ * Add a event from the lists for its context.
* Must be called with ctx->mutex and ctx->lock held.
*/
static void
-list_add_counter(struct perf_counter *counter, struct perf_counter_context *ctx)
+list_add_event(struct perf_event *event, struct perf_event_context *ctx)
{
- struct perf_counter *group_leader = counter->group_leader;
+ struct perf_event *group_leader = event->group_leader;
/*
- * Depending on whether it is a standalone or sibling counter,
- * add it straight to the context's counter list, or to the group
+ * Depending on whether it is a standalone or sibling event,
+ * add it straight to the context's event list, or to the group
* leader's sibling list:
*/
- if (group_leader == counter)
- list_add_tail(&counter->group_entry, &ctx->group_list);
+ if (group_leader == event)
+ list_add_tail(&event->group_entry, &ctx->group_list);
else {
- list_add_tail(&counter->group_entry, &group_leader->sibling_list);
+ list_add_tail(&event->group_entry, &group_leader->sibling_list);
group_leader->nr_siblings++;
}
- list_add_rcu(&counter->event_entry, &ctx->event_list);
- ctx->nr_counters++;
- if (counter->attr.inherit_stat)
+ list_add_rcu(&event->event_entry, &ctx->event_list);
+ ctx->nr_events++;
+ if (event->attr.inherit_stat)
ctx->nr_stat++;
}
/*
- * Remove a counter from the lists for its context.
+ * Remove a event from the lists for its context.
* Must be called with ctx->mutex and ctx->lock held.
*/
static void
-list_del_counter(struct perf_counter *counter, struct perf_counter_context *ctx)
+list_del_event(struct perf_event *event, struct perf_event_context *ctx)
{
- struct perf_counter *sibling, *tmp;
+ struct perf_event *sibling, *tmp;
- if (list_empty(&counter->group_entry))
+ if (list_empty(&event->group_entry))
return;
- ctx->nr_counters--;
- if (counter->attr.inherit_stat)
+ ctx->nr_events--;
+ if (event->attr.inherit_stat)
ctx->nr_stat--;
- list_del_init(&counter->group_entry);
- list_del_rcu(&counter->event_entry);
+ list_del_init(&event->group_entry);
+ list_del_rcu(&event->event_entry);
- if (counter->group_leader != counter)
- counter->group_leader->nr_siblings--;
+ if (event->group_leader != event)
+ event->group_leader->nr_siblings--;
/*
- * If this was a group counter with sibling counters then
- * upgrade the siblings to singleton counters by adding them
+ * If this was a group event with sibling events then
+ * upgrade the siblings to singleton events by adding them
* to the context list directly:
*/
- list_for_each_entry_safe(sibling, tmp, &counter->sibling_list, group_entry) {
+ list_for_each_entry_safe(sibling, tmp, &event->sibling_list, group_entry) {
list_move_tail(&sibling->group_entry, &ctx->group_list);
sibling->group_leader = sibling;
@@ -304,62 +304,62 @@ list_del_counter(struct perf_counter *counter, struct perf_counter_context *ctx)
}
static void
-counter_sched_out(struct perf_counter *counter,
+event_sched_out(struct perf_event *event,
struct perf_cpu_context *cpuctx,
- struct perf_counter_context *ctx)
+ struct perf_event_context *ctx)
{
- if (counter->state != PERF_COUNTER_STATE_ACTIVE)
+ if (event->state != PERF_EVENT_STATE_ACTIVE)
return;
- counter->state = PERF_COUNTER_STATE_INACTIVE;
- if (counter->pending_disable) {
- counter->pending_disable = 0;
- counter->state = PERF_COUNTER_STATE_OFF;
+ event->state = PERF_EVENT_STATE_INACTIVE;
+ if (event->pending_disable) {
+ event->pending_disable = 0;
+ event->state = PERF_EVENT_STATE_OFF;
}
- counter->tstamp_stopped = ctx->time;
- counter->pmu->disable(counter);
- counter->oncpu = -1;
+ event->tstamp_stopped = ctx->time;
+ event->pmu->disable(event);
+ event->oncpu = -1;
- if (!is_software_counter(counter))
+ if (!is_software_event(event))
cpuctx->active_oncpu--;
ctx->nr_active--;
- if (counter->attr.exclusive || !cpuctx->active_oncpu)
+ if (event->attr.exclusive || !cpuctx->active_oncpu)
cpuctx->exclusive = 0;
}
static void
-group_sched_out(struct perf_counter *group_counter,
+group_sched_out(struct perf_event *group_event,
struct perf_cpu_context *cpuctx,
- struct perf_counter_context *ctx)
+ struct perf_event_context *ctx)
{
- struct perf_counter *counter;
+ struct perf_event *event;
- if (group_counter->state != PERF_COUNTER_STATE_ACTIVE)
+ if (group_event->state != PERF_EVENT_STATE_ACTIVE)
return;
- counter_sched_out(group_counter, cpuctx, ctx);
+ event_sched_out(group_event, cpuctx, ctx);
/*
* Schedule out siblings (if any):
*/
- list_for_each_entry(counter, &group_counter->sibling_list, group_entry)
- counter_sched_out(counter, cpuctx, ctx);
+ list_for_each_entry(event, &group_event->sibling_list, group_entry)
+ event_sched_out(event, cpuctx, ctx);
- if (group_counter->attr.exclusive)
+ if (group_event->attr.exclusive)
cpuctx->exclusive = 0;
}
/*
- * Cross CPU call to remove a performance counter
+ * Cross CPU call to remove a performance event
*
- * We disable the counter on the hardware level first. After that we
+ * We disable the event on the hardware level first. After that we
* remove it from the context list.
*/
-static void __perf_counter_remove_from_context(void *info)
+static void __perf_event_remove_from_context(void *info)
{
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
- struct perf_counter *counter = info;
- struct perf_counter_context *ctx = counter->ctx;
+ struct perf_event *event = info;
+ struct perf_event_context *ctx = event->ctx;
/*
* If this is a task context, we need to check whether it is
@@ -372,22 +372,22 @@ static void __perf_counter_remove_from_context(void *info)
spin_lock(&ctx->lock);
/*
* Protect the list operation against NMI by disabling the
- * counters on a global level.
+ * events on a global level.
*/
perf_disable();
- counter_sched_out(counter, cpuctx, ctx);
+ event_sched_out(event, cpuctx, ctx);
- list_del_counter(counter, ctx);
+ list_del_event(event, ctx);
if (!ctx->task) {
/*
- * Allow more per task counters with respect to the
+ * Allow more per task events with respect to the
* reservation:
*/
cpuctx->max_pertask =
- min(perf_max_counters - ctx->nr_counters,
- perf_max_counters - perf_reserved_percpu);
+ min(perf_max_events - ctx->nr_events,
+ perf_max_events - perf_reserved_percpu);
}
perf_enable();
@@ -396,56 +396,56 @@ static void __perf_counter_remove_from_context(void *info)
/*
- * Remove the counter from a task's (or a CPU's) list of counters.
+ * Remove the event from a task's (or a CPU's) list of events.
*
* Must be called with ctx->mutex held.
*
- * CPU counters are removed with a smp call. For task counters we only
+ * CPU events are removed with a smp call. For task events we only
* call when the task is on a CPU.
*
- * If counter->ctx is a cloned context, callers must make sure that
- * every task struct that counter->ctx->task could possibly point to
+ * If event->ctx is a cloned context, callers must make sure that
+ * every task struct that event->ctx->task could possibly point to
* remains valid. This is OK when called from perf_release since
* that only calls us on the top-level context, which can't be a clone.
- * When called from perf_counter_exit_task, it's OK because the
+ * When called from perf_event_exit_task, it's OK because the
* context has been detached from its task.
*/
-static void perf_counter_remove_from_context(struct perf_counter *counter)
+static void perf_event_remove_from_context(struct perf_event *event)
{
- struct perf_counter_context *ctx = counter->ctx;
+ struct perf_event_context *ctx = event->ctx;
struct task_struct *task = ctx->task;
if (!task) {
/*
- * Per cpu counters are removed via an smp call and
+ * Per cpu events are removed via an smp call and
* the removal is always sucessful.
*/
- smp_call_function_single(counter->cpu,
- __perf_counter_remove_from_context,
- counter, 1);
+ smp_call_function_single(event->cpu,
+ __perf_event_remove_from_context,
+ event, 1);
return;
}
retry:
- task_oncpu_function_call(task, __perf_counter_remove_from_context,
- counter);
+ task_oncpu_function_call(task, __perf_event_remove_from_context,
+ event);
spin_lock_irq(&ctx->lock);
/*
* If the context is active we need to retry the smp call.
*/
- if (ctx->nr_active && !list_empty(&counter->group_entry)) {
+ if (ctx->nr_active && !list_empty(&event->group_entry)) {
spin_unlock_irq(&ctx->lock);
goto retry;
}
/*
* The lock prevents that this context is scheduled in so we
- * can remove the counter safely, if the call above did not
+ * can remove the event safely, if the call above did not
* succeed.
*/
- if (!list_empty(&counter->group_entry)) {
- list_del_counter(counter, ctx);
+ if (!list_empty(&event->group_entry)) {
+ list_del_event(event, ctx);
}
spin_unlock_irq(&ctx->lock);
}
@@ -458,7 +458,7 @@ static inline u64 perf_clock(void)
/*
* Update the record of the current time in a context.
*/
-static void update_context_time(struct perf_counter_context *ctx)
+static void update_context_time(struct perf_event_context *ctx)
{
u64 now = perf_clock();
@@ -467,51 +467,51 @@ static void update_context_time(struct perf_counter_context *ctx)
}
/*
- * Update the total_time_enabled and total_time_running fields for a counter.
+ * Update the total_time_enabled and total_time_running fields for a event.
*/
-static void update_counter_times(struct perf_counter *counter)
+static void update_event_times(struct perf_event *event)
{
- struct perf_counter_context *ctx = counter->ctx;
+ struct perf_event_context *ctx = event->ctx;
u64 run_end;
- if (counter->state < PERF_COUNTER_STATE_INACTIVE ||
- counter->group_leader->state < PERF_COUNTER_STATE_INACTIVE)
+ if (event->state < PERF_EVENT_STATE_INACTIVE ||
+ event->group_leader->state < PERF_EVENT_STATE_INACTIVE)
return;
- counter->total_time_enabled = ctx->time - counter->tstamp_enabled;
+ event->total_time_enabled = ctx->time - event->tstamp_enabled;
- if (counter->state == PERF_COUNTER_STATE_INACTIVE)
- run_end = counter->tstamp_stopped;
+ if (event->state == PERF_EVENT_STATE_INACTIVE)
+ run_end = event->tstamp_stopped;
else
run_end = ctx->time;
- counter->total_time_running = run_end - counter->tstamp_running;
+ event->total_time_running = run_end - event->tstamp_running;
}
/*
- * Update total_time_enabled and total_time_running for all counters in a group.
+ * Update total_time_enabled and total_time_running for all events in a group.
*/
-static void update_group_times(struct perf_counter *leader)
+static void update_group_times(struct perf_event *leader)
{
- struct perf_counter *counter;
+ struct perf_event *event;
- update_counter_times(leader);
- list_for_each_entry(counter, &leader->sibling_list, group_entry)
- update_counter_times(counter);
+ update_event_times(leader);
+ list_for_each_entry(event, &leader->sibling_list, group_entry)
+ update_event_times(event);
}
/*
- * Cross CPU call to disable a performance counter
+ * Cross CPU call to disable a performance event
*/
-static void __perf_counter_disable(void *info)
+static void __perf_event_disable(void *info)
{
- struct perf_counter *counter = info;
+ struct perf_event *event = info;
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
- struct perf_counter_context *ctx = counter->ctx;
+ struct perf_event_context *ctx = event->ctx;
/*
- * If this is a per-task counter, need to check whether this
- * counter's task is the current task on this cpu.
+ * If this is a per-task event, need to check whether this
+ * event's task is the current task on this cpu.
*/
if (ctx->task && cpuctx->task_ctx != ctx)
return;
@@ -519,57 +519,57 @@ static void __perf_counter_disable(void *info)
spin_lock(&ctx->lock);
/*
- * If the counter is on, turn it off.
+ * If the event is on, turn it off.
* If it is in error state, leave it in error state.
*/
- if (counter->state >= PERF_COUNTER_STATE_INACTIVE) {
+ if (event->state >= PERF_EVENT_STATE_INACTIVE) {
update_context_time(ctx);
- update_group_times(counter);
- if (counter == counter->group_leader)
- group_sched_out(counter, cpuctx, ctx);
+ update_group_times(event);
+ if (event == event->group_leader)
+ group_sched_out(event, cpuctx, ctx);
else
- counter_sched_out(counter, cpuctx, ctx);
- counter->state = PERF_COUNTER_STATE_OFF;
+ event_sched_out(event, cpuctx, ctx);
+ event->state = PERF_EVENT_STATE_OFF;
}
spin_unlock(&ctx->lock);
}
/*
- * Disable a counter.
+ * Disable a event.
*
- * If counter->ctx is a cloned context, callers must make sure that
- * every task struct that counter->ctx->task could possibly point to
+ * If event->ctx is a cloned context, callers must make sure that
+ * every task struct that event->ctx->task could possibly point to
* remains valid. This condition is satisifed when called through
- * perf_counter_for_each_child or perf_counter_for_each because they
- * hold the top-level counter's child_mutex, so any descendant that
- * goes to exit will block in sync_child_counter.
- * When called from perf_pending_counter it's OK because counter->ctx
+ * perf_event_for_each_child or perf_event_for_each because they
+ * hold the top-level event's child_mutex, so any descendant that
+ * goes to exit will block in sync_child_event.
+ * When called from perf_pending_event it's OK because event->ctx
* is the current context on this CPU and preemption is disabled,
- * hence we can't get into perf_counter_task_sched_out for this context.
+ * hence we can't get into perf_event_task_sched_out for this context.
*/
-static void perf_counter_disable(struct perf_counter *counter)
+static void perf_event_disable(struct perf_event *event)
{
- struct perf_counter_context *ctx = counter->ctx;
+ struct perf_event_context *ctx = event->ctx;
struct task_struct *task = ctx->task;
if (!task) {
/*
- * Disable the counter on the cpu that it's on
+ * Disable the event on the cpu that it's on
*/
- smp_call_function_single(counter->cpu, __perf_counter_disable,
- counter, 1);
+ smp_call_function_single(event->cpu, __perf_event_disable,
+ event, 1);
return;
}
retry:
- task_oncpu_function_call(task, __perf_counter_disable, counter);
+ task_oncpu_function_call(task, __perf_event_disable, event);
spin_lock_irq(&ctx->lock);
/*
- * If the counter is still active, we need to retry the cross-call.
+ * If the event is still active, we need to retry the cross-call.
*/
- if (counter->state == PERF_COUNTER_STATE_ACTIVE) {
+ if (event->state == PERF_EVENT_STATE_ACTIVE) {
spin_unlock_irq(&ctx->lock);
goto retry;
}
@@ -578,73 +578,73 @@ static void perf_counter_disable(struct perf_counter *counter)
* Since we have the lock this context can't be scheduled
* in, so we can change the state safely.
*/
- if (counter->state == PERF_COUNTER_STATE_INACTIVE) {
- update_group_times(counter);
- counter->state = PERF_COUNTER_STATE_OFF;
+ if (event->state == PERF_EVENT_STATE_INACTIVE) {
+ update_group_times(event);
+ event->state = PERF_EVENT_STATE_OFF;
}
spin_unlock_irq(&ctx->lock);
}
static int
-counter_sched_in(struct perf_counter *counter,
+event_sched_in(struct perf_event *event,
struct perf_cpu_context *cpuctx,
- struct perf_counter_context *ctx,
+ struct perf_event_context *ctx,
int cpu)
{
- if (counter->state <= PERF_COUNTER_STATE_OFF)
+ if (event->state <= PERF_EVENT_STATE_OFF)
return 0;
- counter->state = PERF_COUNTER_STATE_ACTIVE;
- counter->oncpu = cpu; /* TODO: put 'cpu' into cpuctx->cpu */
+ event->state = PERF_EVENT_STATE_ACTIVE;
+ event->oncpu = cpu; /* TODO: put 'cpu' into cpuctx->cpu */
/*
* The new state must be visible before we turn it on in the hardware:
*/
smp_wmb();
- if (counter->pmu->enable(counter)) {
- counter->state = PERF_COUNTER_STATE_INACTIVE;
- counter->oncpu = -1;
+ if (event->pmu->enable(event)) {
+ event->state = PERF_EVENT_STATE_INACTIVE;
+ event->oncpu = -1;
return -EAGAIN;
}
- counter->tstamp_running += ctx->time - counter->tstamp_stopped;
+ event->tstamp_running += ctx->time - event->tstamp_stopped;
- if (!is_software_counter(counter))
+ if (!is_software_event(event))
cpuctx->active_oncpu++;
ctx->nr_active++;
- if (counter->attr.exclusive)
+ if (event->attr.exclusive)
cpuctx->exclusive = 1;
return 0;
}
static int
-group_sched_in(struct perf_counter *group_counter,
+group_sched_in(struct perf_event *group_event,
struct perf_cpu_context *cpuctx,
- struct perf_counter_context *ctx,
+ struct perf_event_context *ctx,
int cpu)
{
- struct perf_counter *counter, *partial_group;
+ struct perf_event *event, *partial_group;
int ret;
- if (group_counter->state == PERF_COUNTER_STATE_OFF)
+ if (group_event->state == PERF_EVENT_STATE_OFF)
return 0;
- ret = hw_perf_group_sched_in(group_counter, cpuctx, ctx, cpu);
+ ret = hw_perf_group_sched_in(group_event, cpuctx, ctx, cpu);
if (ret)
return ret < 0 ? ret : 0;
- if (counter_sched_in(group_counter, cpuctx, ctx, cpu))
+ if (event_sched_in(group_event, cpuctx, ctx, cpu))
return -EAGAIN;
/*
* Schedule in siblings as one group (if any):
*/
- list_for_each_entry(counter, &group_counter->sibling_list, group_entry) {
- if (counter_sched_in(counter, cpuctx, ctx, cpu)) {
- partial_group = counter;
+ list_for_each_entry(event, &group_event->sibling_list, group_entry) {
+ if (event_sched_in(event, cpuctx, ctx, cpu)) {
+ partial_group = event;
goto group_error;
}
}
@@ -656,57 +656,57 @@ group_error:
* Groups can be scheduled in as one unit only, so undo any
* partial group before returning:
*/
- list_for_each_entry(counter, &group_counter->sibling_list, group_entry) {
- if (counter == partial_group)
+ list_for_each_entry(event, &group_event->sibling_list, group_entry) {
+ if (event == partial_group)
break;
- counter_sched_out(counter, cpuctx, ctx);
+ event_sched_out(event, cpuctx, ctx);
}
- counter_sched_out(group_counter, cpuctx, ctx);
+ event_sched_out(group_event, cpuctx, ctx);
return -EAGAIN;
}
/*
- * Return 1 for a group consisting entirely of software counters,
- * 0 if the group contains any hardware counters.
+ * Return 1 for a group consisting entirely of software events,
+ * 0 if the group contains any hardware events.
*/
-static int is_software_only_group(struct perf_counter *leader)
+static int is_software_only_group(struct perf_event *leader)
{
- struct perf_counter *counter;
+ struct perf_event *event;
- if (!is_software_counter(leader))
+ if (!is_software_event(leader))
return 0;
- list_for_each_entry(counter, &leader->sibling_list, group_entry)
- if (!is_software_counter(counter))
+ list_for_each_entry(event, &leader->sibling_list, group_entry)
+ if (!is_software_event(event))
return 0;
return 1;
}
/*
- * Work out whether we can put this counter group on the CPU now.
+ * Work out whether we can put this event group on the CPU now.
*/
-static int group_can_go_on(struct perf_counter *counter,
+static int group_can_go_on(struct perf_event *event,
struct perf_cpu_context *cpuctx,
int can_add_hw)
{
/*
- * Groups consisting entirely of software counters can always go on.
+ * Groups consisting entirely of software events can always go on.
*/
- if (is_software_only_group(counter))
+ if (is_software_only_group(event))
return 1;
/*
* If an exclusive group is already on, no other hardware
- * counters can go on.
+ * events can go on.
*/
if (cpuctx->exclusive)
return 0;
/*
* If this group is exclusive and there are already
- * counters on the CPU, it can't go on.
+ * events on the CPU, it can't go on.
*/
- if (counter->attr.exclusive && cpuctx->active_oncpu)
+ if (event->attr.exclusive && cpuctx->active_oncpu)
return 0;
/*
* Otherwise, try to add it if all previous groups were able
@@ -715,26 +715,26 @@ static int group_can_go_on(struct perf_counter *counter,
return can_add_hw;
}
-static void add_counter_to_ctx(struct perf_counter *counter,
- struct perf_counter_context *ctx)
+static void add_event_to_ctx(struct perf_event *event,
+ struct perf_event_context *ctx)
{
- list_add_counter(counter, ctx);
- counter->tstamp_enabled = ctx->time;
- counter->tstamp_running = ctx->time;
- counter->tstamp_stopped = ctx->time;
+ list_add_event(event, ctx);
+ event->tstamp_enabled = ctx->time;
+ event->tstamp_running = ctx->time;
+ event->tstamp_stopped = ctx->time;
}
/*
- * Cross CPU call to install and enable a performance counter
+ * Cross CPU call to install and enable a performance event
*
* Must be called with ctx->mutex held
*/
static void __perf_install_in_context(void *info)
{
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
- struct perf_counter *counter = info;
- struct perf_counter_context *ctx = counter->ctx;
- struct perf_counter *leader = counter->group_leader;
+ struct perf_event *event = info;
+ struct perf_event_context *ctx = event->ctx;
+ struct perf_event *leader = event->group_leader;
int cpu = smp_processor_id();
int err;
@@ -743,7 +743,7 @@ static void __perf_install_in_context(void *info)
* the current task context of this cpu. If not it has been
* scheduled out before the smp call arrived.
* Or possibly this is the right context but it isn't
- * on this cpu because it had no counters.
+ * on this cpu because it had no events.
*/
if (ctx->task && cpuctx->task_ctx != ctx) {
if (cpuctx->task_ctx || ctx->task != current)
@@ -757,41 +757,41 @@ static void __perf_install_in_context(void *info)
/*
* Protect the list operation against NMI by disabling the
- * counters on a global level. NOP for non NMI based counters.
+ * events on a global level. NOP for non NMI based events.
*/
perf_disable();
- add_counter_to_ctx(counter, ctx);
+ add_event_to_ctx(event, ctx);
/*
- * Don't put the counter on if it is disabled or if
+ * Don't put the event on if it is disabled or if
* it is in a group and the group isn't on.
*/
- if (counter->state != PERF_COUNTER_STATE_INACTIVE ||
- (leader != counter && leader->state != PERF_COUNTER_STATE_ACTIVE))
+ if (event->state != PERF_EVENT_STATE_INACTIVE ||
+ (leader != event && leader->state != PERF_EVENT_STATE_ACTIVE))
goto unlock;
/*
- * An exclusive counter can't go on if there are already active
- * hardware counters, and no hardware counter can go on if there
- * is already an exclusive counter on.
+ * An exclusive event can't go on if there are already active
+ * hardware events, and no hardware event can go on if there
+ * is already an exclusive event on.
*/
- if (!group_can_go_on(counter, cpuctx, 1))
+ if (!group_can_go_on(event, cpuctx, 1))
err = -EEXIST;
else
- err = counter_sched_in(counter, cpuctx, ctx, cpu);
+ err = event_sched_in(event, cpuctx, ctx, cpu);
if (err) {
/*
- * This counter couldn't go on. If it is in a group
+ * This event couldn't go on. If it is in a group
* then we have to pull the whole group off.
- * If the counter group is pinned then put it in error state.
+ * If the event group is pinned then put it in error state.
*/
- if (leader != counter)
+ if (leader != event)
group_sched_out(leader, cpuctx, ctx);
if (leader->attr.pinned) {
update_group_times(leader);
- leader->state = PERF_COUNTER_STATE_ERROR;
+ leader->state = PERF_EVENT_STATE_ERROR;
}
}
@@ -805,92 +805,92 @@ static void __perf_install_in_context(void *info)
}
/*
- * Attach a performance counter to a context
+ * Attach a performance event to a context
*
- * First we add the counter to the list with the hardware enable bit
- * in counter->hw_config cleared.
+ * First we add the event to the list with the hardware enable bit
+ * in event->hw_config cleared.
*
- * If the counter is attached to a task which is on a CPU we use a smp
+ * If the event is attached to a task which is on a CPU we use a smp
* call to enable it in the task context. The task might have been
* scheduled away, but we check this in the smp call again.
*
* Must be called with ctx->mutex held.
*/
static void
-perf_install_in_context(struct perf_counter_context *ctx,
- struct perf_counter *counter,
+perf_install_in_context(struct perf_event_context *ctx,
+ struct perf_event *event,
int cpu)
{
struct task_struct *task = ctx->task;
if (!task) {
/*
- * Per cpu counters are installed via an smp call and
+ * Per cpu events are installed via an smp call and
* the install is always sucessful.
*/
smp_call_function_single(cpu, __perf_install_in_context,
- counter, 1);
+ event, 1);
return;
}
retry:
task_oncpu_function_call(task, __perf_install_in_context,
- counter);
+ event);
spin_lock_irq(&ctx->lock);
/*
* we need to retry the smp call.
*/
- if (ctx->is_active && list_empty(&counter->group_entry)) {
+ if (ctx->is_active && list_empty(&event->group_entry)) {
spin_unlock_irq(&ctx->lock);
goto retry;
}
/*
* The lock prevents that this context is scheduled in so we
- * can add the counter safely, if it the call above did not
+ * can add the event safely, if it the call above did not
* succeed.
*/
- if (list_empty(&counter->group_entry))
- add_counter_to_ctx(counter, ctx);
+ if (list_empty(&event->group_entry))
+ add_event_to_ctx(event, ctx);
spin_unlock_irq(&ctx->lock);
}
/*
- * Put a counter into inactive state and update time fields.
+ * Put a event into inactive state and update time fields.
* Enabling the leader of a group effectively enables all
* the group members that aren't explicitly disabled, so we
* have to update their ->tstamp_enabled also.
* Note: this works for group members as well as group leaders
* since the non-leader members' sibling_lists will be empty.
*/
-static void __perf_counter_mark_enabled(struct perf_counter *counter,
- struct perf_counter_context *ctx)
+static void __perf_event_mark_enabled(struct perf_event *event,
+ struct perf_event_context *ctx)
{
- struct perf_counter *sub;
+ struct perf_event *sub;
- counter->state = PERF_COUNTER_STATE_INACTIVE;
- counter->tstamp_enabled = ctx->time - counter->total_time_enabled;
- list_for_each_entry(sub, &counter->sibling_list, group_entry)
- if (sub->state >= PERF_COUNTER_STATE_INACTIVE)
+ event->state = PERF_EVENT_STATE_INACTIVE;
+ event->tstamp_enabled = ctx->time - event->total_time_enabled;
+ list_for_each_entry(sub, &event->sibling_list, group_entry)
+ if (sub->state >= PERF_EVENT_STATE_INACTIVE)
sub->tstamp_enabled =
ctx->time - sub->total_time_enabled;
}
/*
- * Cross CPU call to enable a performance counter
+ * Cross CPU call to enable a performance event
*/
-static void __perf_counter_enable(void *info)
+static void __perf_event_enable(void *info)
{
- struct perf_counter *counter = info;
+ struct perf_event *event = info;
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
- struct perf_counter_context *ctx = counter->ctx;
- struct perf_counter *leader = counter->group_leader;
+ struct perf_event_context *ctx = event->ctx;
+ struct perf_event *leader = event->group_leader;
int err;
/*
- * If this is a per-task counter, need to check whether this
- * counter's task is the current task on this cpu.
+ * If this is a per-task event, need to check whether this
+ * event's task is the current task on this cpu.
*/
if (ctx->task && cpuctx->task_ctx != ctx) {
if (cpuctx->task_ctx || ctx->task != current)
@@ -902,40 +902,40 @@ static void __perf_counter_enable(void *info)
ctx->is_active = 1;
update_context_time(ctx);
- if (counter->state >= PERF_COUNTER_STATE_INACTIVE)
+ if (event->state >= PERF_EVENT_STATE_INACTIVE)
goto unlock;
- __perf_counter_mark_enabled(counter, ctx);
+ __perf_event_mark_enabled(event, ctx);
/*
- * If the counter is in a group and isn't the group leader,
+ * If the event is in a group and isn't the group leader,
* then don't put it on unless the group is on.
*/
- if (leader != counter && leader->state != PERF_COUNTER_STATE_ACTIVE)
+ if (leader != event && leader->state != PERF_EVENT_STATE_ACTIVE)
goto unlock;
- if (!group_can_go_on(counter, cpuctx, 1)) {
+ if (!group_can_go_on(event, cpuctx, 1)) {
err = -EEXIST;
} else {
perf_disable();
- if (counter == leader)
- err = group_sched_in(counter, cpuctx, ctx,
+ if (event == leader)
+ err = group_sched_in(event, cpuctx, ctx,
smp_processor_id());
else
- err = counter_sched_in(counter, cpuctx, ctx,
+ err = event_sched_in(event, cpuctx, ctx,
smp_processor_id());
perf_enable();
}
if (err) {
/*
- * If this counter can't go on and it's part of a
+ * If this event can't go on and it's part of a
* group, then the whole group has to come off.
*/
- if (leader != counter)
+ if (leader != event)
group_sched_out(leader, cpuctx, ctx);
if (leader->attr.pinned) {
update_group_times(leader);
- leader->state = PERF_COUNTER_STATE_ERROR;
+ leader->state = PERF_EVENT_STATE_ERROR;
}
}
@@ -944,98 +944,98 @@ static void __perf_counter_enable(void *info)
}
/*
- * Enable a counter.
+ * Enable a event.
*
- * If counter->ctx is a cloned context, callers must make sure that
- * every task struct that counter->ctx->task could possibly point to
+ * If event->ctx is a cloned context, callers must make sure that
+ * every task struct that event->ctx->task could possibly point to
* remains valid. This condition is satisfied when called through
- * perf_counter_for_each_child or perf_counter_for_each as described
- * for perf_counter_disable.
+ * perf_event_for_each_child or perf_event_for_each as described
+ * for perf_event_disable.
*/
-static void perf_counter_enable(struct perf_counter *counter)
+static void perf_event_enable(struct perf_event *event)
{
- struct perf_counter_context *ctx = counter->ctx;
+ struct perf_event_context *ctx = event->ctx;
struct task_struct *task = ctx->task;
if (!task) {
/*
- * Enable the counter on the cpu that it's on
+ * Enable the event on the cpu that it's on
*/
- smp_call_function_single(counter->cpu, __perf_counter_enable,
- counter, 1);
+ smp_call_function_single(event->cpu, __perf_event_enable,
+ event, 1);
return;
}
spin_lock_irq(&ctx->lock);
- if (counter->state >= PERF_COUNTER_STATE_INACTIVE)
+ if (event->state >= PERF_EVENT_STATE_INACTIVE)
goto out;
/*
- * If the counter is in error state, clear that first.
- * That way, if we see the counter in error state below, we
+ * If the event is in error state, clear that first.
+ * That way, if we see the event in error state below, we
* know that it has gone back into error state, as distinct
* from the task having been scheduled away before the
* cross-call arrived.
*/
- if (counter->state == PERF_COUNTER_STATE_ERROR)
- counter->state = PERF_COUNTER_STATE_OFF;
+ if (event->state == PERF_EVENT_STATE_ERROR)
+ event->state = PERF_EVENT_STATE_OFF;
retry:
spin_unlock_irq(&ctx->lock);
- task_oncpu_function_call(task, __perf_counter_enable, counter);
+ task_oncpu_function_call(task, __perf_event_enable, event);
spin_lock_irq(&ctx->lock);
/*
- * If the context is active and the counter is still off,
+ * If the context is active and the event is still off,
* we need to retry the cross-call.
*/
- if (ctx->is_active && counter->state == PERF_COUNTER_STATE_OFF)
+ if (ctx->is_active && event->state == PERF_EVENT_STATE_OFF)
goto retry;
/*
* Since we have the lock this context can't be scheduled
* in, so we can change the state safely.
*/
- if (counter->state == PERF_COUNTER_STATE_OFF)
- __perf_counter_mark_enabled(counter, ctx);
+ if (event->state == PERF_EVENT_STATE_OFF)
+ __perf_event_mark_enabled(event, ctx);
out:
spin_unlock_irq(&ctx->lock);
}
-static int perf_counter_refresh(struct perf_counter *counter, int refresh)
+static int perf_event_refresh(struct perf_event *event, int refresh)
{
/*
- * not supported on inherited counters
+ * not supported on inherited events
*/
- if (counter->attr.inherit)
+ if (event->attr.inherit)
return -EINVAL;
- atomic_add(refresh, &counter->event_limit);
- perf_counter_enable(counter);
+ atomic_add(refresh, &event->event_limit);
+ perf_event_enable(event);
return 0;
}
-void __perf_counter_sched_out(struct perf_counter_context *ctx,
+void __perf_event_sched_out(struct perf_event_context *ctx,
struct perf_cpu_context *cpuctx)
{
- struct perf_counter *counter;
+ struct perf_event *event;
spin_lock(&ctx->lock);
ctx->is_active = 0;
- if (likely(!ctx->nr_counters))
+ if (likely(!ctx->nr_events))
goto out;
update_context_time(ctx);
perf_disable();
if (ctx->nr_active) {
- list_for_each_entry(counter, &ctx->group_list, group_entry) {
- if (counter != counter->group_leader)
- counter_sched_out(counter, cpuctx, ctx);
+ list_for_each_entry(event, &ctx->group_list, group_entry) {
+ if (event != event->group_leader)
+ event_sched_out(event, cpuctx, ctx);
else
- group_sched_out(counter, cpuctx, ctx);
+ group_sched_out(event, cpuctx, ctx);
}
}
perf_enable();
@@ -1046,46 +1046,46 @@ void __perf_counter_sched_out(struct perf_counter_context *ctx,
/*
* Test whether two contexts are equivalent, i.e. whether they
* have both been cloned from the same version of the same context
- * and they both have the same number of enabled counters.
- * If the number of enabled counters is the same, then the set
- * of enabled counters should be the same, because these are both
- * inherited contexts, therefore we can't access individual counters
+ * and they both have the same number of enabled events.
+ * If the number of enabled events is the same, then the set
+ * of enabled events should be the same, because these are both
+ * inherited contexts, therefore we can't access individual events
* in them directly with an fd; we can only enable/disable all
- * counters via prctl, or enable/disable all counters in a family
+ * events via prctl, or enable/disable all events in a family
* via ioctl, which will have the same effect on both contexts.
*/
-static int context_equiv(struct perf_counter_context *ctx1,
- struct perf_counter_context *ctx2)
+static int context_equiv(struct perf_event_context *ctx1,
+ struct perf_event_context *ctx2)
{
return ctx1->parent_ctx && ctx1->parent_ctx == ctx2->parent_ctx
&& ctx1->parent_gen == ctx2->parent_gen
&& !ctx1->pin_count && !ctx2->pin_count;
}
-static void __perf_counter_read(void *counter);
+static void __perf_event_read(void *event);
-static void __perf_counter_sync_stat(struct perf_counter *counter,
- struct perf_counter *next_counter)
+static void __perf_event_sync_stat(struct perf_event *event,
+ struct perf_event *next_event)
{
u64 value;
- if (!counter->attr.inherit_stat)
+ if (!event->attr.inherit_stat)
return;
/*
- * Update the counter value, we cannot use perf_counter_read()
+ * Update the event value, we cannot use perf_event_read()
* because we're in the middle of a context switch and have IRQs
* disabled, which upsets smp_call_function_single(), however
- * we know the counter must be on the current CPU, therefore we
+ * we know the event must be on the current CPU, therefore we
* don't need to use it.
*/
- switch (counter->state) {
- case PERF_COUNTER_STATE_ACTIVE:
- __perf_counter_read(counter);
+ switch (event->state) {
+ case PERF_EVENT_STATE_ACTIVE:
+ __perf_event_read(event);
break;
- case PERF_COUNTER_STATE_INACTIVE:
- update_counter_times(counter);
+ case PERF_EVENT_STATE_INACTIVE:
+ update_event_times(event);
break;
default:
@@ -1093,73 +1093,73 @@ static void __perf_counter_sync_stat(struct perf_counter *counter,
}
/*
- * In order to keep per-task stats reliable we need to flip the counter
+ * In order to keep per-task stats reliable we need to flip the event
* values when we flip the contexts.
*/
- value = atomic64_read(&next_counter->count);
- value = atomic64_xchg(&counter->count, value);
- atomic64_set(&next_counter->count, value);
+ value = atomic64_read(&next_event->count);
+ value = atomic64_xchg(&event->count, value);
+ atomic64_set(&next_event->count, value);
- swap(counter->total_time_enabled, next_counter->total_time_enabled);
- swap(counter->total_time_running, next_counter->total_time_running);
+ swap(event->total_time_enabled, next_event->total_time_enabled);
+ swap(event->total_time_running, next_event->total_time_running);
/*
* Since we swizzled the values, update the user visible data too.
*/
- perf_counter_update_userpage(counter);
- perf_counter_update_userpage(next_counter);
+ perf_event_update_userpage(event);
+ perf_event_update_userpage(next_event);
}
#define list_next_entry(pos, member) \
list_entry(pos->member.next, typeof(*pos), member)
-static void perf_counter_sync_stat(struct perf_counter_context *ctx,
- struct perf_counter_context *next_ctx)
+static void perf_event_sync_stat(struct perf_event_context *ctx,
+ struct perf_event_context *next_ctx)
{
- struct perf_counter *counter, *next_counter;
+ struct perf_event *event, *next_event;
if (!ctx->nr_stat)
return;
- counter = list_first_entry(&ctx->event_list,
- struct perf_counter, event_entry);
+ event = list_first_entry(&ctx->event_list,
+ struct perf_event, event_entry);
- next_counter = list_first_entry(&next_ctx->event_list,
- struct perf_counter, event_entry);
+ next_event = list_first_entry(&next_ctx->event_list,
+ struct perf_event, event_entry);
- while (&counter->event_entry != &ctx->event_list &&
- &next_counter->event_entry != &next_ctx->event_list) {
+ while (&event->event_entry != &ctx->event_list &&
+ &next_event->event_entry != &next_ctx->event_list) {
- __perf_counter_sync_stat(counter, next_counter);
+ __perf_event_sync_stat(event, next_event);
- counter = list_next_entry(counter, event_entry);
- next_counter = list_next_entry(next_counter, event_entry);
+ event = list_next_entry(event, event_entry);
+ next_event = list_next_entry(next_event, event_entry);
}
}
/*
- * Called from scheduler to remove the counters of the current task,
+ * Called from scheduler to remove the events of the current task,
* with interrupts disabled.
*
- * We stop each counter and update the counter value in counter->count.
+ * We stop each event and update the event value in event->count.
*
* This does not protect us against NMI, but disable()
- * sets the disabled bit in the control field of counter _before_
- * accessing the counter control register. If a NMI hits, then it will
- * not restart the counter.
+ * sets the disabled bit in the control field of event _before_
+ * accessing the event control register. If a NMI hits, then it will
+ * not restart the event.
*/
-void perf_counter_task_sched_out(struct task_struct *task,
+void perf_event_task_sched_out(struct task_struct *task,
struct task_struct *next, int cpu)
{
struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu);
- struct perf_counter_context *ctx = task->perf_counter_ctxp;
- struct perf_counter_context *next_ctx;
- struct perf_counter_context *parent;
+ struct perf_event_context *ctx = task->perf_event_ctxp;
+ struct perf_event_context *next_ctx;
+ struct perf_event_context *parent;
struct pt_regs *regs;
int do_switch = 1;
regs = task_pt_regs(task);
- perf_swcounter_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, regs, 0);
+ perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, regs, 0);
if (likely(!ctx || !cpuctx->task_ctx))
return;
@@ -1168,7 +1168,7 @@ void perf_counter_task_sched_out(struct task_struct *task,
rcu_read_lock();
parent = rcu_dereference(ctx->parent_ctx);
- next_ctx = next->perf_counter_ctxp;
+ next_ctx = next->perf_event_ctxp;
if (parent && next_ctx &&
rcu_dereference(next_ctx->parent_ctx) == parent) {
/*
@@ -1185,15 +1185,15 @@ void perf_counter_task_sched_out(struct task_struct *task,
if (context_equiv(ctx, next_ctx)) {
/*
* XXX do we need a memory barrier of sorts
- * wrt to rcu_dereference() of perf_counter_ctxp
+ * wrt to rcu_dereference() of perf_event_ctxp
*/
- task->perf_counter_ctxp = next_ctx;
- next->perf_counter_ctxp = ctx;
+ task->perf_event_ctxp = next_ctx;
+ next->perf_event_ctxp = ctx;
ctx->task = next;
next_ctx->task = task;
do_switch = 0;
- perf_counter_sync_stat(ctx, next_ctx);
+ perf_event_sync_stat(ctx, next_ctx);
}
spin_unlock(&next_ctx->lock);
spin_unlock(&ctx->lock);
@@ -1201,7 +1201,7 @@ void perf_counter_task_sched_out(struct task_struct *task,
rcu_read_unlock();
if (do_switch) {
- __perf_counter_sched_out(ctx, cpuctx);
+ __perf_event_sched_out(ctx, cpuctx);
cpuctx->task_ctx = NULL;
}
}
@@ -1209,7 +1209,7 @@ void perf_counter_task_sched_out(struct task_struct *task,
/*
* Called with IRQs disabled
*/
-static void __perf_counter_task_sched_out(struct perf_counter_context *ctx)
+static void __perf_event_task_sched_out(struct perf_event_context *ctx)
{
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
@@ -1219,28 +1219,28 @@ static void __perf_counter_task_sched_out(struct perf_counter_context *ctx)
if (WARN_ON_ONCE(ctx != cpuctx->task_ctx))
return;
- __perf_counter_sched_out(ctx, cpuctx);
+ __perf_event_sched_out(ctx, cpuctx);
cpuctx->task_ctx = NULL;
}
/*
* Called with IRQs disabled
*/
-static void perf_counter_cpu_sched_out(struct perf_cpu_context *cpuctx)
+static void perf_event_cpu_sched_out(struct perf_cpu_context *cpuctx)
{
- __perf_counter_sched_out(&cpuctx->ctx, cpuctx);
+ __perf_event_sched_out(&cpuctx->ctx, cpuctx);
}
static void
-__perf_counter_sched_in(struct perf_counter_context *ctx,
+__perf_event_sched_in(struct perf_event_context *ctx,
struct perf_cpu_context *cpuctx, int cpu)
{
- struct perf_counter *counter;
+ struct perf_event *event;
int can_add_hw = 1;
spin_lock(&ctx->lock);
ctx->is_active = 1;
- if (likely(!ctx->nr_counters))
+ if (likely(!ctx->nr_events))
goto out;
ctx->timestamp = perf_clock();
@@ -1251,52 +1251,52 @@ __perf_counter_sched_in(struct perf_counter_context *ctx,
* First go through the list and put on any pinned groups
* in order to give them the best chance of going on.
*/
- list_for_each_entry(counter, &ctx->group_list, group_entry) {
- if (counter->state <= PERF_COUNTER_STATE_OFF ||
- !counter->attr.pinned)
+ list_for_each_entry(event, &ctx->group_list, group_entry) {
+ if (event->state <= PERF_EVENT_STATE_OFF ||
+ !event->attr.pinned)
continue;
- if (counter->cpu != -1 && counter->cpu != cpu)
+ if (event->cpu != -1 && event->cpu != cpu)
continue;
- if (counter != counter->group_leader)
- counter_sched_in(counter, cpuctx, ctx, cpu);
+ if (event != event->group_leader)
+ event_sched_in(event, cpuctx, ctx, cpu);
else {
- if (group_can_go_on(counter, cpuctx, 1))
- group_sched_in(counter, cpuctx, ctx, cpu);
+ if (group_can_go_on(event, cpuctx, 1))
+ group_sched_in(event, cpuctx, ctx, cpu);
}
/*
* If this pinned group hasn't been scheduled,
* put it in error state.
*/
- if (counter->state == PERF_COUNTER_STATE_INACTIVE) {
- update_group_times(counter);
- counter->state = PERF_COUNTER_STATE_ERROR;
+ if (event->state == PERF_EVENT_STATE_INACTIVE) {
+ update_group_times(event);
+ event->state = PERF_EVENT_STATE_ERROR;
}
}
- list_for_each_entry(counter, &ctx->group_list, group_entry) {
+ list_for_each_entry(event, &ctx->group_list, group_entry) {
/*
- * Ignore counters in OFF or ERROR state, and
- * ignore pinned counters since we did them already.
+ * Ignore events in OFF or ERROR state, and
+ * ignore pinned events since we did them already.
*/
- if (counter->state <= PERF_COUNTER_STATE_OFF ||
- counter->attr.pinned)
+ if (event->state <= PERF_EVENT_STATE_OFF ||
+ event->attr.pinned)
continue;
/*
* Listen to the 'cpu' scheduling filter constraint
- * of counters:
+ * of events:
*/
- if (counter->cpu != -1 && counter->cpu != cpu)
+ if (event->cpu != -1 && event->cpu != cpu)
continue;
- if (counter != counter->group_leader) {
- if (counter_sched_in(counter, cpuctx, ctx, cpu))
+ if (event != event->group_leader) {
+ if (event_sched_in(event, cpuctx, ctx, cpu))
can_add_hw = 0;
} else {
- if (group_can_go_on(counter, cpuctx, can_add_hw)) {
- if (group_sched_in(counter, cpuctx, ctx, cpu))
+ if (group_can_go_on(event, cpuctx, can_add_hw)) {
+ if (group_sched_in(event, cpuctx, ctx, cpu))
can_add_hw = 0;
}
}
@@ -1307,48 +1307,48 @@ __perf_counter_sched_in(struct perf_counter_context *ctx,
}
/*
- * Called from scheduler to add the counters of the current task
+ * Called from scheduler to add the events of the current task
* with interrupts disabled.
*
- * We restore the counter value and then enable it.
+ * We restore the event value and then enable it.
*
* This does not protect us against NMI, but enable()
- * sets the enabled bit in the control field of counter _before_
- * accessing the counter control register. If a NMI hits, then it will
- * keep the counter running.
+ * sets the enabled bit in the control field of event _before_
+ * accessing the event control register. If a NMI hits, then it will
+ * keep the event running.
*/
-void perf_counter_task_sched_in(struct task_struct *task, int cpu)
+void perf_event_task_sched_in(struct task_struct *task, int cpu)
{
struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu);
- struct perf_counter_context *ctx = task->perf_counter_ctxp;
+ struct perf_event_context *ctx = task->perf_event_ctxp;
if (likely(!ctx))
return;
if (cpuctx->task_ctx == ctx)
return;
- __perf_counter_sched_in(ctx, cpuctx, cpu);
+ __perf_event_sched_in(ctx, cpuctx, cpu);
cpuctx->task_ctx = ctx;
}
-static void perf_counter_cpu_sched_in(struct perf_cpu_context *cpuctx, int cpu)
+static void perf_event_cpu_sched_in(struct perf_cpu_context *cpuctx, int cpu)
{
- struct perf_counter_context *ctx = &cpuctx->ctx;
+ struct perf_event_context *ctx = &cpuctx->ctx;
- __perf_counter_sched_in(ctx, cpuctx, cpu);
+ __perf_event_sched_in(ctx, cpuctx, cpu);
}
#define MAX_INTERRUPTS (~0ULL)
-static void perf_log_throttle(struct perf_counter *counter, int enable);
+static void perf_log_throttle(struct perf_event *event, int enable);
-static void perf_adjust_period(struct perf_counter *counter, u64 events)
+static void perf_adjust_period(struct perf_event *event, u64 events)
{
- struct hw_perf_counter *hwc = &counter->hw;
+ struct hw_perf_event *hwc = &event->hw;
u64 period, sample_period;
s64 delta;
events *= hwc->sample_period;
- period = div64_u64(events, counter->attr.sample_freq);
+ period = div64_u64(events, event->attr.sample_freq);
delta = (s64)(period - hwc->sample_period);
delta = (delta + 7) / 8; /* low pass filter */
@@ -1361,39 +1361,39 @@ static void perf_adjust_period(struct perf_counter *counter, u64 events)
hwc->sample_period = sample_period;
}
-static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
+static void perf_ctx_adjust_freq(struct perf_event_context *ctx)
{
- struct perf_counter *counter;
- struct hw_perf_counter *hwc;
+ struct perf_event *event;
+ struct hw_perf_event *hwc;
u64 interrupts, freq;
spin_lock(&ctx->lock);
- list_for_each_entry(counter, &ctx->group_list, group_entry) {
- if (counter->state != PERF_COUNTER_STATE_ACTIVE)
+ list_for_each_entry(event, &ctx->group_list, group_entry) {
+ if (event->state != PERF_EVENT_STATE_ACTIVE)
continue;
- hwc = &counter->hw;
+ hwc = &event->hw;
interrupts = hwc->interrupts;
hwc->interrupts = 0;
/*
- * unthrottle counters on the tick
+ * unthrottle events on the tick
*/
if (interrupts == MAX_INTERRUPTS) {
- perf_log_throttle(counter, 1);
- counter->pmu->unthrottle(counter);
- interrupts = 2*sysctl_perf_counter_sample_rate/HZ;
+ perf_log_throttle(event, 1);
+ event->pmu->unthrottle(event);
+ interrupts = 2*sysctl_perf_event_sample_rate/HZ;
}
- if (!counter->attr.freq || !counter->attr.sample_freq)
+ if (!event->attr.freq || !event->attr.sample_freq)
continue;
/*
* if the specified freq < HZ then we need to skip ticks
*/
- if (counter->attr.sample_freq < HZ) {
- freq = counter->attr.sample_freq;
+ if (event->attr.sample_freq < HZ) {
+ freq = event->attr.sample_freq;
hwc->freq_count += freq;
hwc->freq_interrupts += interrupts;
@@ -1407,7 +1407,7 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
} else
freq = HZ;
- perf_adjust_period(counter, freq * interrupts);
+ perf_adjust_period(event, freq * interrupts);
/*
* In order to avoid being stalled by an (accidental) huge
@@ -1416,9 +1416,9 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
*/
if (!interrupts) {
perf_disable();
- counter->pmu->disable(counter);
+ event->pmu->disable(event);
atomic64_set(&hwc->period_left, 0);
- counter->pmu->enable(counter);
+ event->pmu->enable(event);
perf_enable();
}
}
@@ -1426,22 +1426,22 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
}
/*
- * Round-robin a context's counters:
+ * Round-robin a context's events:
*/
-static void rotate_ctx(struct perf_counter_context *ctx)
+static void rotate_ctx(struct perf_event_context *ctx)
{
- struct perf_counter *counter;
+ struct perf_event *event;
- if (!ctx->nr_counters)
+ if (!ctx->nr_events)
return;
spin_lock(&ctx->lock);
/*
- * Rotate the first entry last (works just fine for group counters too):
+ * Rotate the first entry last (works just fine for group events too):
*/
perf_disable();
- list_for_each_entry(counter, &ctx->group_list, group_entry) {
- list_move_tail(&counter->group_entry, &ctx->group_list);
+ list_for_each_entry(event, &ctx->group_list, group_entry) {
+ list_move_tail(&event->group_entry, &ctx->group_list);
break;
}
perf_enable();
@@ -1449,93 +1449,93 @@ static void rotate_ctx(struct perf_counter_context *ctx)
spin_unlock(&ctx->lock);
}
-void perf_counter_task_tick(struct task_struct *curr, int cpu)
+void perf_event_task_tick(struct task_struct *curr, int cpu)
{
struct perf_cpu_context *cpuctx;
- struct perf_counter_context *ctx;
+ struct perf_event_context *ctx;
- if (!atomic_read(&nr_counters))
+ if (!atomic_read(&nr_events))
return;
cpuctx = &per_cpu(perf_cpu_context, cpu);
- ctx = curr->perf_counter_ctxp;
+ ctx = curr->perf_event_ctxp;
perf_ctx_adjust_freq(&cpuctx->ctx);
if (ctx)
perf_ctx_adjust_freq(ctx);
- perf_counter_cpu_sched_out(cpuctx);
+ perf_event_cpu_sched_out(cpuctx);
if (ctx)
- __perf_counter_task_sched_out(ctx);
+ __perf_event_task_sched_out(ctx);
rotate_ctx(&cpuctx->ctx);
if (ctx)
rotate_ctx(ctx);
- perf_counter_cpu_sched_in(cpuctx, cpu);
+ perf_event_cpu_sched_in(cpuctx, cpu);
if (ctx)
- perf_counter_task_sched_in(curr, cpu);
+ perf_event_task_sched_in(curr, cpu);
}
/*
- * Enable all of a task's counters that have been marked enable-on-exec.
+ * Enable all of a task's events that have been marked enable-on-exec.
* This expects task == current.
*/
-static void perf_counter_enable_on_exec(struct task_struct *task)
+static void perf_event_enable_on_exec(struct task_struct *task)
{
- struct perf_counter_context *ctx;
- struct perf_counter *counter;
+ struct perf_event_context *ctx;
+ struct perf_event *event;
unsigned long flags;
int enabled = 0;
local_irq_save(flags);
- ctx = task->perf_counter_ctxp;
- if (!ctx || !ctx->nr_counters)
+ ctx = task->perf_event_ctxp;
+ if (!ctx || !ctx->nr_events)
goto out;
- __perf_counter_task_sched_out(ctx);
+ __perf_event_task_sched_out(ctx);
spin_lock(&ctx->lock);
- list_for_each_entry(counter, &ctx->group_list, group_entry) {
- if (!counter->attr.enable_on_exec)
+ list_for_each_entry(event, &ctx->group_list, group_entry) {
+ if (!event->attr.enable_on_exec)
continue;
- counter->attr.enable_on_exec = 0;
- if (counter->state >= PERF_COUNTER_STATE_INACTIVE)
+ event->attr.enable_on_exec = 0;
+ if (event->state >= PERF_EVENT_STATE_INACTIVE)
continue;
- __perf_counter_mark_enabled(counter, ctx);
+ __perf_event_mark_enabled(event, ctx);
enabled = 1;
}
/*
- * Unclone this context if we enabled any counter.
+ * Unclone this context if we enabled any event.
*/
if (enabled)
unclone_ctx(ctx);
spin_unlock(&ctx->lock);
- perf_counter_task_sched_in(task, smp_processor_id());
+ perf_event_task_sched_in(task, smp_processor_id());
out:
local_irq_restore(flags);
}
/*
- * Cross CPU call to read the hardware counter
+ * Cross CPU call to read the hardware event
*/
-static void __perf_counter_read(void *info)
+static void __perf_event_read(void *info)
{
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
- struct perf_counter *counter = info;
- struct perf_counter_context *ctx = counter->ctx;
+ struct perf_event *event = info;
+ struct perf_event_context *ctx = event->ctx;
unsigned long flags;
/*
* If this is a task context, we need to check whether it is
* the current task context of this cpu. If not it has been
* scheduled out before the smp call arrived. In that case
- * counter->count would have been updated to a recent sample
- * when the counter was scheduled out.
+ * event->count would have been updated to a recent sample
+ * when the event was scheduled out.
*/
if (ctx->task && cpuctx->task_ctx != ctx)
return;
@@ -1543,32 +1543,32 @@ static void __perf_counter_read(void *info)
local_irq_save(flags);
if (ctx->is_active)
update_context_time(ctx);
- counter->pmu->read(counter);
- update_counter_times(counter);
+ event->pmu->read(event);
+ update_event_times(event);
local_irq_restore(flags);
}
-static u64 perf_counter_read(struct perf_counter *counter)
+static u64 perf_event_read(struct perf_event *event)
{
/*
- * If counter is enabled and currently active on a CPU, update the
- * value in the counter structure:
+ * If event is enabled and currently active on a CPU, update the
+ * value in the event structure:
*/
- if (counter->state == PERF_COUNTER_STATE_ACTIVE) {
- smp_call_function_single(counter->oncpu,
- __perf_counter_read, counter, 1);
- } else if (counter->state == PERF_COUNTER_STATE_INACTIVE) {
- update_counter_times(counter);
+ if (event->state == PERF_EVENT_STATE_ACTIVE) {
+ smp_call_function_single(event->oncpu,
+ __perf_event_read, event, 1);
+ } else if (event->state == PERF_EVENT_STATE_INACTIVE) {
+ update_event_times(event);
}
- return atomic64_read(&counter->count);
+ return atomic64_read(&event->count);
}
/*
- * Initialize the perf_counter context in a task_struct:
+ * Initialize the perf_event context in a task_struct:
*/
static void
-__perf_counter_init_context(struct perf_counter_context *ctx,
+__perf_event_init_context(struct perf_event_context *ctx,
struct task_struct *task)
{
memset(ctx, 0, sizeof(*ctx));
@@ -1580,19 +1580,19 @@ __perf_counter_init_context(struct perf_counter_context *ctx,
ctx->task = task;
}
-static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
+static struct perf_event_context *find_get_context(pid_t pid, int cpu)
{
- struct perf_counter_context *ctx;
+ struct perf_event_context *ctx;
struct perf_cpu_context *cpuctx;
struct task_struct *task;
unsigned long flags;
int err;
/*
- * If cpu is not a wildcard then this is a percpu counter:
+ * If cpu is not a wildcard then this is a percpu event:
*/
if (cpu != -1) {
- /* Must be root to operate on a CPU counter: */
+ /* Must be root to operate on a CPU event: */
if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
return ERR_PTR(-EACCES);
@@ -1600,7 +1600,7 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
return ERR_PTR(-EINVAL);
/*
- * We could be clever and allow to attach a counter to an
+ * We could be clever and allow to attach a event to an
* offline CPU and activate it when the CPU comes up, but
* that's for later.
*/
@@ -1627,7 +1627,7 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
return ERR_PTR(-ESRCH);
/*
- * Can't attach counters to a dying task.
+ * Can't attach events to a dying task.
*/
err = -ESRCH;
if (task->flags & PF_EXITING)
@@ -1646,13 +1646,13 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
}
if (!ctx) {
- ctx = kmalloc(sizeof(struct perf_counter_context), GFP_KERNEL);
+ ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL);
err = -ENOMEM;
if (!ctx)
goto errout;
- __perf_counter_init_context(ctx, task);
+ __perf_event_init_context(ctx, task);
get_ctx(ctx);
- if (cmpxchg(&task->perf_counter_ctxp, NULL, ctx)) {
+ if (cmpxchg(&task->perf_event_ctxp, NULL, ctx)) {
/*
* We raced with some other task; use
* the context they set.
@@ -1671,42 +1671,42 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
return ERR_PTR(err);
}
-static void free_counter_rcu(struct rcu_head *head)
+static void free_event_rcu(struct rcu_head *head)
{
- struct perf_counter *counter;
+ struct perf_event *event;
- counter = container_of(head, struct perf_counter, rcu_head);
- if (counter->ns)
- put_pid_ns(counter->ns);
- kfree(counter);
+ event = container_of(head, struct perf_event, rcu_head);
+ if (event->ns)
+ put_pid_ns(event->ns);
+ kfree(event);
}
-static void perf_pending_sync(struct perf_counter *counter);
+static void perf_pending_sync(struct perf_event *event);
-static void free_counter(struct perf_counter *counter)
+static void free_event(struct perf_event *event)
{
- perf_pending_sync(counter);
+ perf_pending_sync(event);
- if (!counter->parent) {
- atomic_dec(&nr_counters);
- if (counter->attr.mmap)
- atomic_dec(&nr_mmap_counters);
- if (counter->attr.comm)
- atomic_dec(&nr_comm_counters);
- if (counter->attr.task)
- atomic_dec(&nr_task_counters);
+ if (!event->parent) {
+ atomic_dec(&nr_events);
+ if (event->attr.mmap)
+ atomic_dec(&nr_mmap_events);
+ if (event->attr.comm)
+ atomic_dec(&nr_comm_events);
+ if (event->attr.task)
+ atomic_dec(&nr_task_events);
}
- if (counter->output) {
- fput(counter->output->filp);
- counter->output = NULL;
+ if (event->output) {
+ fput(event->output->filp);
+ event->output = NULL;
}
- if (counter->destroy)
- counter->destroy(counter);
+ if (event->destroy)
+ event->destroy(event);
- put_ctx(counter->ctx);
- call_rcu(&counter->rcu_head, free_counter_rcu);
+ put_ctx(event->ctx);
+ call_rcu(&event->rcu_head, free_event_rcu);
}
/*
@@ -1714,43 +1714,43 @@ static void free_counter(struct perf_counter *counter)
*/
static int perf_release(struct inode *inode, struct file *file)
{
- struct perf_counter *counter = file->private_data;
- struct perf_counter_context *ctx = counter->ctx;
+ struct perf_event *event = file->private_data;
+ struct perf_event_context *ctx = event->ctx;
file->private_data = NULL;
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
- perf_counter_remove_from_context(counter);
+ perf_event_remove_from_context(event);
mutex_unlock(&ctx->mutex);
- mutex_lock(&counter->owner->perf_counter_mutex);
- list_del_init(&counter->owner_entry);
- mutex_unlock(&counter->owner->perf_counter_mutex);
- put_task_struct(counter->owner);
+ mutex_lock(&event->owner->perf_event_mutex);
+ list_del_init(&event->owner_entry);
+ mutex_unlock(&event->owner->perf_event_mutex);
+ put_task_struct(event->owner);
- free_counter(counter);
+ free_event(event);
return 0;
}
-static int perf_counter_read_size(struct perf_counter *counter)
+static int perf_event_read_size(struct perf_event *event)
{
int entry = sizeof(u64); /* value */
int size = 0;
int nr = 1;
- if (counter->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
+ if (event->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
size += sizeof(u64);
- if (counter->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
+ if (event->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
size += sizeof(u64);
- if (counter->attr.read_format & PERF_FORMAT_ID)
+ if (event->attr.read_format & PERF_FORMAT_ID)
entry += sizeof(u64);
- if (counter->attr.read_format & PERF_FORMAT_GROUP) {
- nr += counter->group_leader->nr_siblings;
+ if (event->attr.read_format & PERF_FORMAT_GROUP) {
+ nr += event->group_leader->nr_siblings;
size += sizeof(u64);
}
@@ -1759,27 +1759,27 @@ static int perf_counter_read_size(struct perf_counter *counter)
return size;
}
-static u64 perf_counter_read_value(struct perf_counter *counter)
+static u64 perf_event_read_value(struct perf_event *event)
{
- struct perf_counter *child;
+ struct perf_event *child;
u64 total = 0;
- total += perf_counter_read(counter);
- list_for_each_entry(child, &counter->child_list, child_list)
- total += perf_counter_read(child);
+ total += perf_event_read(event);
+ list_for_each_entry(child, &event->child_list, child_list)
+ total += perf_event_read(child);
return total;
}
-static int perf_counter_read_entry(struct perf_counter *counter,
+static int perf_event_read_entry(struct perf_event *event,
u64 read_format, char __user *buf)
{
int n = 0, count = 0;
u64 values[2];
- values[n++] = perf_counter_read_value(counter);
+ values[n++] = perf_event_read_value(event);
if (read_format & PERF_FORMAT_ID)
- values[n++] = primary_counter_id(counter);
+ values[n++] = primary_event_id(event);
count = n * sizeof(u64);
@@ -1789,10 +1789,10 @@ static int perf_counter_read_entry(struct perf_counter *counter,
return count;
}
-static int perf_counter_read_group(struct perf_counter *counter,
+static int perf_event_read_group(struct perf_event *event,
u64 read_format, char __user *buf)
{
- struct perf_counter *leader = counter->group_leader, *sub;
+ struct perf_event *leader = event->group_leader, *sub;
int n = 0, size = 0, err = -EFAULT;
u64 values[3];
@@ -1811,14 +1811,14 @@ static int perf_counter_read_group(struct perf_counter *counter,
if (copy_to_user(buf, values, size))
return -EFAULT;
- err = perf_counter_read_entry(leader, read_format, buf + size);
+ err = perf_event_read_entry(leader, read_format, buf + size);
if (err < 0)
return err;
size += err;
list_for_each_entry(sub, &leader->sibling_list, group_entry) {
- err = perf_counter_read_entry(sub, read_format,
+ err = perf_event_read_entry(sub, read_format,
buf + size);
if (err < 0)
return err;
@@ -1829,23 +1829,23 @@ static int perf_counter_read_group(struct perf_counter *counter,
return size;
}
-static int perf_counter_read_one(struct perf_counter *counter,
+static int perf_event_read_one(struct perf_event *event,
u64 read_format, char __user *buf)
{
u64 values[4];
int n = 0;
- values[n++] = perf_counter_read_value(counter);
+ values[n++] = perf_event_read_value(event);
if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
- values[n++] = counter->total_time_enabled +
- atomic64_read(&counter->child_total_time_enabled);
+ values[n++] = event->total_time_enabled +
+ atomic64_read(&event->child_total_time_enabled);
}
if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
- values[n++] = counter->total_time_running +
- atomic64_read(&counter->child_total_time_running);
+ values[n++] = event->total_time_running +
+ atomic64_read(&event->child_total_time_running);
}
if (read_format & PERF_FORMAT_ID)
- values[n++] = primary_counter_id(counter);
+ values[n++] = primary_event_id(event);
if (copy_to_user(buf, values, n * sizeof(u64)))
return -EFAULT;
@@ -1854,32 +1854,32 @@ static int perf_counter_read_one(struct perf_counter *counter,
}
/*
- * Read the performance counter - simple non blocking version for now
+ * Read the performance event - simple non blocking version for now
*/
static ssize_t
-perf_read_hw(struct perf_counter *counter, char __user *buf, size_t count)
+perf_read_hw(struct perf_event *event, char __user *buf, size_t count)
{
- u64 read_format = counter->attr.read_format;
+ u64 read_format = event->attr.read_format;
int ret;
/*
- * Return end-of-file for a read on a counter that is in
+ * Return end-of-file for a read on a event that is in
* error state (i.e. because it was pinned but it couldn't be
* scheduled on to the CPU at some point).
*/
- if (counter->state == PERF_COUNTER_STATE_ERROR)
+ if (event->state == PERF_EVENT_STATE_ERROR)
return 0;
- if (count < perf_counter_read_size(counter))
+ if (count < perf_event_read_size(event))
return -ENOSPC;
- WARN_ON_ONCE(counter->ctx->parent_ctx);
- mutex_lock(&counter->child_mutex);
+ WARN_ON_ONCE(event->ctx->parent_ctx);
+ mutex_lock(&event->child_mutex);
if (read_format & PERF_FORMAT_GROUP)
- ret = perf_counter_read_group(counter, read_format, buf);
+ ret = perf_event_read_group(event, read_format, buf);
else
- ret = perf_counter_read_one(counter, read_format, buf);
- mutex_unlock(&counter->child_mutex);
+ ret = perf_event_read_one(event, read_format, buf);
+ mutex_unlock(&event->child_mutex);
return ret;
}
@@ -1887,79 +1887,79 @@ perf_read_hw(struct perf_counter *counter, char __user *buf, size_t count)
static ssize_t
perf_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
- struct perf_counter *counter = file->private_data;
+ struct perf_event *event = file->private_data;
- return perf_read_hw(counter, buf, count);
+ return perf_read_hw(event, buf, count);
}
static unsigned int perf_poll(struct file *file, poll_table *wait)
{
- struct perf_counter *counter = file->private_data;
+ struct perf_event *event = file->private_data;
struct perf_mmap_data *data;
unsigned int events = POLL_HUP;
rcu_read_lock();
- data = rcu_dereference(counter->data);
+ data = rcu_dereference(event->data);
if (data)
events = atomic_xchg(&data->poll, 0);
rcu_read_unlock();
- poll_wait(file, &counter->waitq, wait);
+ poll_wait(file, &event->waitq, wait);
return events;
}
-static void perf_counter_reset(struct perf_counter *counter)
+static void perf_event_reset(struct perf_event *event)
{
- (void)perf_counter_read(counter);
- atomic64_set(&counter->count, 0);
- perf_counter_update_userpage(counter);
+ (void)perf_event_read(event);
+ atomic64_set(&event->count, 0);
+ perf_event_update_userpage(event);
}
/*
- * Holding the top-level counter's child_mutex means that any
- * descendant process that has inherited this counter will block
- * in sync_child_counter if it goes to exit, thus satisfying the
- * task existence requirements of perf_counter_enable/disable.
+ * Holding the top-level event's child_mutex means that any
+ * descendant process that has inherited this event will block
+ * in sync_child_event if it goes to exit, thus satisfying the
+ * task existence requirements of perf_event_enable/disable.
*/
-static void perf_counter_for_each_child(struct perf_counter *counter,
- void (*func)(struct perf_counter *))
+static void perf_event_for_each_child(struct perf_event *event,
+ void (*func)(struct perf_event *))
{
- struct perf_counter *child;
+ struct perf_event *child;
- WARN_ON_ONCE(counter->ctx->parent_ctx);
- mutex_lock(&counter->child_mutex);
- func(counter);
- list_for_each_entry(child, &counter->child_list, child_list)
+ WARN_ON_ONCE(event->ctx->parent_ctx);
+ mutex_lock(&event->child_mutex);
+ func(event);
+ list_for_each_entry(child, &event->child_list, child_list)
func(child);
- mutex_unlock(&counter->child_mutex);
+ mutex_unlock(&event->child_mutex);
}
-static void perf_counter_for_each(struct perf_counter *counter,
- void (*func)(struct perf_counter *))
+static void perf_event_for_each(struct perf_event *event,
+ void (*func)(struct perf_event *))
{
- struct perf_counter_context *ctx = counter->ctx;
- struct perf_counter *sibling;
+ struct perf_event_context *ctx = event->ctx;
+ struct perf_event *sibling;
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
- counter = counter->group_leader;
+ event = event->group_leader;
- perf_counter_for_each_child(counter, func);
- func(counter);
- list_for_each_entry(sibling, &counter->sibling_list, group_entry)
- perf_counter_for_each_child(counter, func);
+ perf_event_for_each_child(event, func);
+ func(event);
+ list_for_each_entry(sibling, &event->sibling_list, group_entry)
+ perf_event_for_each_child(event, func);
mutex_unlock(&ctx->mutex);
}
-static int perf_counter_period(struct perf_counter *counter, u64 __user *arg)
+static int perf_event_period(struct perf_event *event, u64 __user *arg)
{
- struct perf_counter_context *ctx = counter->ctx;
+ struct perf_event_context *ctx = event->ctx;
unsigned long size;
int ret = 0;
u64 value;
- if (!counter->attr.sample_period)
+ if (!event->attr.sample_period)
return -EINVAL;
size = copy_from_user(&value, arg, sizeof(value));
@@ -1970,16 +1970,16 @@ static int perf_counter_period(struct perf_counter *counter, u64 __user *arg)
return -EINVAL;
spin_lock_irq(&ctx->lock);
- if (counter->attr.freq) {
- if (value > sysctl_perf_counter_sample_rate) {
+ if (event->attr.freq) {
+ if (value > sysctl_perf_event_sample_rate) {
ret = -EINVAL;
goto unlock;
}
- counter->attr.sample_freq = value;
+ event->attr.sample_freq = value;
} else {
- counter->attr.sample_period = value;
- counter->hw.sample_period = value;
+ event->attr.sample_period = value;
+ event->hw.sample_period = value;
}
unlock:
spin_unlock_irq(&ctx->lock);
@@ -1987,80 +1987,80 @@ unlock:
return ret;
}
-int perf_counter_set_output(struct perf_counter *counter, int output_fd);
+int perf_event_set_output(struct perf_event *event, int output_fd);
static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
- struct perf_counter *counter = file->private_data;
- void (*func)(struct perf_counter *);
+ struct perf_event *event = file->private_data;
+ void (*func)(struct perf_event *);
u32 flags = arg;
switch (cmd) {
- case PERF_COUNTER_IOC_ENABLE:
- func = perf_counter_enable;
+ case PERF_EVENT_IOC_ENABLE:
+ func = perf_event_enable;
break;
- case PERF_COUNTER_IOC_DISABLE:
- func = perf_counter_disable;
+ case PERF_EVENT_IOC_DISABLE:
+ func = perf_event_disable;
break;
- case PERF_COUNTER_IOC_RESET:
- func = perf_counter_reset;
+ case PERF_EVENT_IOC_RESET:
+ func = perf_event_reset;
break;
- case PERF_COUNTER_IOC_REFRESH:
- return perf_counter_refresh(counter, arg);
+ case PERF_EVENT_IOC_REFRESH:
+ return perf_event_refresh(event, arg);
- case PERF_COUNTER_IOC_PERIOD:
- return perf_counter_period(counter, (u64 __user *)arg);
+ case PERF_EVENT_IOC_PERIOD:
+ return perf_event_period(event, (u64 __user *)arg);
- case PERF_COUNTER_IOC_SET_OUTPUT:
- return perf_counter_set_output(counter, arg);
+ case PERF_EVENT_IOC_SET_OUTPUT:
+ return perf_event_set_output(event, arg);
default:
return -ENOTTY;
}
if (flags & PERF_IOC_FLAG_GROUP)
- perf_counter_for_each(counter, func);
+ perf_event_for_each(event, func);
else
- perf_counter_for_each_child(counter, func);
+ perf_event_for_each_child(event, func);
return 0;
}
-int perf_counter_task_enable(void)
+int perf_event_task_enable(void)
{
- struct perf_counter *counter;
+ struct perf_event *event;
- mutex_lock(&current->perf_counter_mutex);
- list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
- perf_counter_for_each_child(counter, perf_counter_enable);
- mutex_unlock(&current->perf_counter_mutex);
+ mutex_lock(&current->perf_event_mutex);
+ list_for_each_entry(event, &current->perf_event_list, owner_entry)
+ perf_event_for_each_child(event, perf_event_enable);
+ mutex_unlock(&current->perf_event_mutex);
return 0;
}
-int perf_counter_task_disable(void)
+int perf_event_task_disable(void)
{
- struct perf_counter *counter;
+ struct perf_event *event;
- mutex_lock(&current->perf_counter_mutex);
- list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
- perf_counter_for_each_child(counter, perf_counter_disable);
- mutex_unlock(&current->perf_counter_mutex);
+ mutex_lock(&current->perf_event_mutex);
+ list_for_each_entry(event, &current->perf_event_list, owner_entry)
+ perf_event_for_each_child(event, perf_event_disable);
+ mutex_unlock(&current->perf_event_mutex);
return 0;
}
-#ifndef PERF_COUNTER_INDEX_OFFSET
-# define PERF_COUNTER_INDEX_OFFSET 0
+#ifndef PERF_EVENT_INDEX_OFFSET
+# define PERF_EVENT_INDEX_OFFSET 0
#endif
-static int perf_counter_index(struct perf_counter *counter)
+static int perf_event_index(struct perf_event *event)
{
- if (counter->state != PERF_COUNTER_STATE_ACTIVE)
+ if (event->state != PERF_EVENT_STATE_ACTIVE)
return 0;
- return counter->hw.idx + 1 - PERF_COUNTER_INDEX_OFFSET;
+ return event->hw.idx + 1 - PERF_EVENT_INDEX_OFFSET;
}
/*
@@ -2068,13 +2068,13 @@ static int perf_counter_index(struct perf_counter *counter)
* the seqlock logic goes bad. We can not serialize this because the arch
* code calls this from NMI context.
*/
-void perf_counter_update_userpage(struct perf_counter *counter)
+void perf_event_update_userpage(struct perf_event *event)
{
- struct perf_counter_mmap_page *userpg;
+ struct perf_event_mmap_page *userpg;
struct perf_mmap_data *data;
rcu_read_lock();
- data = rcu_dereference(counter->data);
+ data = rcu_dereference(event->data);
if (!data)
goto unlock;
@@ -2087,16 +2087,16 @@ void perf_counter_update_userpage(struct perf_counter *counter)
preempt_disable();
++userpg->lock;
barrier();
- userpg->index = perf_counter_index(counter);
- userpg->offset = atomic64_read(&counter->count);
- if (counter->state == PERF_COUNTER_STATE_ACTIVE)
- userpg->offset -= atomic64_read(&counter->hw.prev_count);
+ userpg->index = perf_event_index(event);
+ userpg->offset = atomic64_read(&event->count);
+ if (event->state == PERF_EVENT_STATE_ACTIVE)
+ userpg->offset -= atomic64_read(&event->hw.prev_count);
- userpg->time_enabled = counter->total_time_enabled +
- atomic64_read(&counter->child_total_time_enabled);
+ userpg->time_enabled = event->total_time_enabled +
+ atomic64_read(&event->child_total_time_enabled);
- userpg->time_running = counter->total_time_running +
- atomic64_read(&counter->child_total_time_running);
+ userpg->time_running = event->total_time_running +
+ atomic64_read(&event->child_total_time_running);
barrier();
++userpg->lock;
@@ -2107,7 +2107,7 @@ unlock:
static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
- struct perf_counter *counter = vma->vm_file->private_data;
+ struct perf_event *event = vma->vm_file->private_data;
struct perf_mmap_data *data;
int ret = VM_FAULT_SIGBUS;
@@ -2118,7 +2118,7 @@ static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
}
rcu_read_lock();
- data = rcu_dereference(counter->data);
+ data = rcu_dereference(event->data);
if (!data)
goto unlock;
@@ -2147,13 +2147,13 @@ unlock:
return ret;
}
-static int perf_mmap_data_alloc(struct perf_counter *counter, int nr_pages)
+static int perf_mmap_data_alloc(struct perf_event *event, int nr_pages)
{
struct perf_mmap_data *data;
unsigned long size;
int i;
- WARN_ON(atomic_read(&counter->mmap_count));
+ WARN_ON(atomic_read(&event->mmap_count));
size = sizeof(struct perf_mmap_data);
size += nr_pages * sizeof(void *);
@@ -2175,14 +2175,14 @@ static int perf_mmap_data_alloc(struct perf_counter *counter, int nr_pages)
data->nr_pages = nr_pages;
atomic_set(&data->lock, -1);
- if (counter->attr.watermark) {
+ if (event->attr.watermark) {
data->watermark = min_t(long, PAGE_SIZE * nr_pages,
- counter->attr.wakeup_watermark);
+ event->attr.wakeup_watermark);
}
if (!data->watermark)
data->watermark = max(PAGE_SIZE, PAGE_SIZE * nr_pages / 4);
- rcu_assign_pointer(counter->data, data);
+ rcu_assign_pointer(event->data, data);
return 0;
@@ -2221,35 +2221,35 @@ static void __perf_mmap_data_free(struct rcu_head *rcu_head)
kfree(data);
}
-static void perf_mmap_data_free(struct perf_counter *counter)
+static void perf_mmap_data_free(struct perf_event *event)
{
- struct perf_mmap_data *data = counter->data;
+ struct perf_mmap_data *data = event->data;
- WARN_ON(atomic_read(&counter->mmap_count));
+ WARN_ON(atomic_read(&event->mmap_count));
- rcu_assign_pointer(counter->data, NULL);
+ rcu_assign_pointer(event->data, NULL);
call_rcu(&data->rcu_head, __perf_mmap_data_free);
}
static void perf_mmap_open(struct vm_area_struct *vma)
{
- struct perf_counter *counter = vma->vm_file->private_data;
+ struct perf_event *event = vma->vm_file->private_data;
- atomic_inc(&counter->mmap_count);
+ atomic_inc(&event->mmap_count);
}
static void perf_mmap_close(struct vm_area_struct *vma)
{
- struct perf_counter *counter = vma->vm_file->private_data;
+ struct perf_event *event = vma->vm_file->private_data;
- WARN_ON_ONCE(counter->ctx->parent_ctx);
- if (atomic_dec_and_mutex_lock(&counter->mmap_count, &counter->mmap_mutex)) {
+ WARN_ON_ONCE(event->ctx->parent_ctx);
+ if (atomic_dec_and_mutex_lock(&event->mmap_count, &event->mmap_mutex)) {
struct user_struct *user = current_user();
- atomic_long_sub(counter->data->nr_pages + 1, &user->locked_vm);
- vma->vm_mm->locked_vm -= counter->data->nr_locked;
- perf_mmap_data_free(counter);
- mutex_unlock(&counter->mmap_mutex);
+ atomic_long_sub(event->data->nr_pages + 1, &user->locked_vm);
+ vma->vm_mm->locked_vm -= event->data->nr_locked;
+ perf_mmap_data_free(event);
+ mutex_unlock(&event->mmap_mutex);
}
}
@@ -2262,7 +2262,7 @@ static struct vm_operations_struct perf_mmap_vmops = {
static int perf_mmap(struct file *file, struct vm_area_struct *vma)
{
- struct perf_counter *counter = file->private_data;
+ struct perf_event *event = file->private_data;
unsigned long user_locked, user_lock_limit;
struct user_struct *user = current_user();
unsigned long locked, lock_limit;
@@ -2290,21 +2290,21 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
if (vma->vm_pgoff != 0)
return -EINVAL;
- WARN_ON_ONCE(counter->ctx->parent_ctx);
- mutex_lock(&counter->mmap_mutex);
- if (counter->output) {
+ WARN_ON_ONCE(event->ctx->parent_ctx);
+ mutex_lock(&event->mmap_mutex);
+ if (event->output) {
ret = -EINVAL;
goto unlock;
}
- if (atomic_inc_not_zero(&counter->mmap_count)) {
- if (nr_pages != counter->data->nr_pages)
+ if (atomic_inc_not_zero(&event->mmap_count)) {
+ if (nr_pages != event->data->nr_pages)
ret = -EINVAL;
goto unlock;
}
user_extra = nr_pages + 1;
- user_lock_limit = sysctl_perf_counter_mlock >> (PAGE_SHIFT - 10);
+ user_lock_limit = sysctl_perf_event_mlock >> (PAGE_SHIFT - 10);
/*
* Increase the limit linearly with more CPUs:
@@ -2327,20 +2327,20 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
goto unlock;
}
- WARN_ON(counter->data);
- ret = perf_mmap_data_alloc(counter, nr_pages);
+ WARN_ON(event->data);
+ ret = perf_mmap_data_alloc(event, nr_pages);
if (ret)
goto unlock;
- atomic_set(&counter->mmap_count, 1);
+ atomic_set(&event->mmap_count, 1);
atomic_long_add(user_extra, &user->locked_vm);
vma->vm_mm->locked_vm += extra;
- counter->data->nr_locked = extra;
+ event->data->nr_locked = extra;
if (vma->vm_flags & VM_WRITE)
- counter->data->writable = 1;
+ event->data->writable = 1;
unlock:
- mutex_unlock(&counter->mmap_mutex);
+ mutex_unlock(&event->mmap_mutex);
vma->vm_flags |= VM_RESERVED;
vma->vm_ops = &perf_mmap_vmops;
@@ -2351,11 +2351,11 @@ unlock:
static int perf_fasync(int fd, struct file *filp, int on)
{
struct inode *inode = filp->f_path.dentry->d_inode;
- struct perf_counter *counter = filp->private_data;
+ struct perf_event *event = filp->private_data;
int retval;
mutex_lock(&inode->i_mutex);
- retval = fasync_helper(fd, filp, on, &counter->fasync);
+ retval = fasync_helper(fd, filp, on, &event->fasync);
mutex_unlock(&inode->i_mutex);
if (retval < 0)
@@ -2375,19 +2375,19 @@ static const struct file_operations perf_fops = {
};
/*
- * Perf counter wakeup
+ * Perf event wakeup
*
* If there's data, ensure we set the poll() state and publish everything
* to user-space before waking everybody up.
*/
-void perf_counter_wakeup(struct perf_counter *counter)
+void perf_event_wakeup(struct perf_event *event)
{
- wake_up_all(&counter->waitq);
+ wake_up_all(&event->waitq);
- if (counter->pending_kill) {
- kill_fasync(&counter->fasync, SIGIO, counter->pending_kill);
- counter->pending_kill = 0;
+ if (event->pending_kill) {
+ kill_fasync(&event->fasync, SIGIO, event->pending_kill);
+ event->pending_kill = 0;
}
}
@@ -2400,19 +2400,19 @@ void perf_counter_wakeup(struct perf_counter *counter)
* single linked list and use cmpxchg() to add entries lockless.
*/
-static void perf_pending_counter(struct perf_pending_entry *entry)
+static void perf_pending_event(struct perf_pending_entry *entry)
{
- struct perf_counter *counter = container_of(entry,
- struct perf_counter, pending);
+ struct perf_event *event = container_of(entry,
+ struct perf_event, pending);
- if (counter->pending_disable) {
- counter->pending_disable = 0;
- __perf_counter_disable(counter);
+ if (event->pending_disable) {
+ event->pending_disable = 0;
+ __perf_event_disable(event);
}
- if (counter->pending_wakeup) {
- counter->pending_wakeup = 0;
- perf_counter_wakeup(counter);
+ if (event->pending_wakeup) {
+ event->pending_wakeup = 0;
+ perf_event_wakeup(event);
}
}
@@ -2438,7 +2438,7 @@ static void perf_pending_queue(struct perf_pending_entry *entry,
entry->next = *head;
} while (cmpxchg(head, entry->next, entry) != entry->next);
- set_perf_counter_pending();
+ set_perf_event_pending();
put_cpu_var(perf_pending_head);
}
@@ -2471,7 +2471,7 @@ static int __perf_pending_run(void)
return nr;
}
-static inline int perf_not_pending(struct perf_counter *counter)
+static inline int perf_not_pending(struct perf_event *event)
{
/*
* If we flush on whatever cpu we run, there is a chance we don't
@@ -2486,15 +2486,15 @@ static inline int perf_not_pending(struct perf_counter *counter)
* so that we do not miss the wakeup. -- see perf_pending_handle()
*/
smp_rmb();
- return counter->pending.next == NULL;
+ return event->pending.next == NULL;
}
-static void perf_pending_sync(struct perf_counter *counter)
+static void perf_pending_sync(struct perf_event *event)
{
- wait_event(counter->waitq, perf_not_pending(counter));
+ wait_event(event->waitq, perf_not_pending(event));
}
-void perf_counter_do_pending(void)
+void perf_event_do_pending(void)
{
__perf_pending_run();
}
@@ -2535,25 +2535,25 @@ static void perf_output_wakeup(struct perf_output_handle *handle)
atomic_set(&handle->data->poll, POLL_IN);
if (handle->nmi) {
- handle->counter->pending_wakeup = 1;
- perf_pending_queue(&handle->counter->pending,
- perf_pending_counter);
+ handle->event->pending_wakeup = 1;
+ perf_pending_queue(&handle->event->pending,
+ perf_pending_event);
} else
- perf_counter_wakeup(handle->counter);
+ perf_event_wakeup(handle->event);
}
/*
* Curious locking construct.
*
- * We need to ensure a later event doesn't publish a head when a former
- * event isn't done writing. However since we need to deal with NMIs we
+ * We need to ensure a later event_id doesn't publish a head when a former
+ * event_id isn't done writing. However since we need to deal with NMIs we
* cannot fully serialize things.
*
* What we do is serialize between CPUs so we only have to deal with NMI
* nesting on a single CPU.
*
* We only publish the head (and generate a wakeup) when the outer-most
- * event completes.
+ * event_id completes.
*/
static void perf_output_lock(struct perf_output_handle *handle)
{
@@ -2657,10 +2657,10 @@ void perf_output_copy(struct perf_output_handle *handle,
}
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)
{
- struct perf_counter *output_counter;
+ struct perf_event *output_event;
struct perf_mmap_data *data;
unsigned long tail, offset, head;
int have_lost;
@@ -2672,21 +2672,21 @@ int perf_output_begin(struct perf_output_handle *handle,
rcu_read_lock();
/*
- * For inherited counters we send all the output towards the parent.
+ * For inherited events we send all the output towards the parent.
*/
- if (counter->parent)
- counter = counter->parent;
+ if (event->parent)
+ event = event->parent;
- output_counter = rcu_dereference(counter->output);
- if (output_counter)
- counter = output_counter;
+ output_event = rcu_dereference(event->output);
+ if (output_event)
+ event = output_event;
- data = rcu_dereference(counter->data);
+ data = rcu_dereference(event->data);
if (!data)
goto out;
handle->data = data;
- handle->counter = counter;
+ handle->event = event;
handle->nmi = nmi;
handle->sample = sample;
@@ -2720,10 +2720,10 @@ int perf_output_begin(struct perf_output_handle *handle,
atomic_set(&data->wakeup, 1);
if (have_lost) {
- lost_event.header.type = PERF_EVENT_LOST;
+ lost_event.header.type = PERF_RECORD_LOST;
lost_event.header.misc = 0;
lost_event.header.size = sizeof(lost_event);
- lost_event.id = counter->id;
+ lost_event.id = event->id;
lost_event.lost = atomic_xchg(&data->lost, 0);
perf_output_put(handle, lost_event);
@@ -2742,10 +2742,10 @@ out:
void perf_output_end(struct perf_output_handle *handle)
{
- struct perf_counter *counter = handle->counter;
+ struct perf_event *event = handle->event;
struct perf_mmap_data *data = handle->data;
- int wakeup_events = counter->attr.wakeup_events;
+ int wakeup_events = event->attr.wakeup_events;
if (handle->sample && wakeup_events) {
int events = atomic_inc_return(&data->events);
@@ -2759,58 +2759,58 @@ void perf_output_end(struct perf_output_handle *handle)
rcu_read_unlock();
}
-static u32 perf_counter_pid(struct perf_counter *counter, struct task_struct *p)
+static u32 perf_event_pid(struct perf_event *event, struct task_struct *p)
{
/*
- * only top level counters have the pid namespace they were created in
+ * only top level events have the pid namespace they were created in
*/
- if (counter->parent)
- counter = counter->parent;
+ if (event->parent)
+ event = event->parent;
- return task_tgid_nr_ns(p, counter->ns);
+ return task_tgid_nr_ns(p, event->ns);
}
-static u32 perf_counter_tid(struct perf_counter *counter, struct task_struct *p)
+static u32 perf_event_tid(struct perf_event *event, struct task_struct *p)
{
/*
- * only top level counters have the pid namespace they were created in
+ * only top level events have the pid namespace they were created in
*/
- if (counter->parent)
- counter = counter->parent;
+ if (event->parent)
+ event = event->parent;
- return task_pid_nr_ns(p, counter->ns);
+ return task_pid_nr_ns(p, event->ns);
}
static void perf_output_read_one(struct perf_output_handle *handle,
- struct perf_counter *counter)
+ struct perf_event *event)
{
- u64 read_format = counter->attr.read_format;
+ u64 read_format = event->attr.read_format;
u64 values[4];
int n = 0;
- values[n++] = atomic64_read(&counter->count);
+ values[n++] = atomic64_read(&event->count);
if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
- values[n++] = counter->total_time_enabled +
- atomic64_read(&counter->child_total_time_enabled);
+ values[n++] = event->total_time_enabled +
+ atomic64_read(&event->child_total_time_enabled);
}
if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
- values[n++] = counter->total_time_running +
- atomic64_read(&counter->child_total_time_running);
+ values[n++] = event->total_time_running +
+ atomic64_read(&event->child_total_time_running);
}
if (read_format & PERF_FORMAT_ID)
- values[n++] = primary_counter_id(counter);
+ values[n++] = primary_event_id(event);
perf_output_copy(handle, values, n * sizeof(u64));
}
/*
- * XXX PERF_FORMAT_GROUP vs inherited counters seems difficult.
+ * XXX PERF_FORMAT_GROUP vs inherited events seems difficult.
*/
static void perf_output_read_group(struct perf_output_handle *handle,
- struct perf_counter *counter)
+ struct perf_event *event)
{
- struct perf_counter *leader = counter->group_leader, *sub;
- u64 read_format = counter->attr.read_format;
+ struct perf_event *leader = event->group_leader, *sub;
+ u64 read_format = event->attr.read_format;
u64 values[5];
int n = 0;
@@ -2822,42 +2822,42 @@ static void perf_output_read_group(struct perf_output_handle *handle,
if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
values[n++] = leader->total_time_running;
- if (leader != counter)
+ if (leader != event)
leader->pmu->read(leader);
values[n++] = atomic64_read(&leader->count);
if (read_format & PERF_FORMAT_ID)
- values[n++] = primary_counter_id(leader);
+ values[n++] = primary_event_id(leader);
perf_output_copy(handle, values, n * sizeof(u64));
list_for_each_entry(sub, &leader->sibling_list, group_entry) {
n = 0;
- if (sub != counter)
+ if (sub != event)
sub->pmu->read(sub);
values[n++] = atomic64_read(&sub->count);
if (read_format & PERF_FORMAT_ID)
- values[n++] = primary_counter_id(sub);
+ values[n++] = primary_event_id(sub);
perf_output_copy(handle, values, n * sizeof(u64));
}
}
static void perf_output_read(struct perf_output_handle *handle,
- struct perf_counter *counter)
+ struct perf_event *event)
{
- if (counter->attr.read_format & PERF_FORMAT_GROUP)
- perf_output_read_group(handle, counter);
+ if (event->attr.read_format & PERF_FORMAT_GROUP)
+ perf_output_read_group(handle, event);
else
- perf_output_read_one(handle, counter);
+ perf_output_read_one(handle, event);
}
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)
{
u64 sample_type = data->type;
@@ -2888,7 +2888,7 @@ void perf_output_sample(struct perf_output_handle *handle,
perf_output_put(handle, data->period);
if (sample_type & PERF_SAMPLE_READ)
- perf_output_read(handle, counter);
+ perf_output_read(handle, event);
if (sample_type & PERF_SAMPLE_CALLCHAIN) {
if (data->callchain) {
@@ -2926,14 +2926,14 @@ void perf_output_sample(struct perf_output_handle *handle,
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)
{
- u64 sample_type = counter->attr.sample_type;
+ u64 sample_type = event->attr.sample_type;
data->type = sample_type;
- header->type = PERF_EVENT_SAMPLE;
+ header->type = PERF_RECORD_SAMPLE;
header->size = sizeof(*header);
header->misc = 0;
@@ -2947,8 +2947,8 @@ void perf_prepare_sample(struct perf_event_header *header,
if (sample_type & PERF_SAMPLE_TID) {
/* namespace issues */
- data->tid_entry.pid = perf_counter_pid(counter, current);
- data->tid_entry.tid = perf_counter_tid(counter, current);
+ data->tid_entry.pid = perf_event_pid(event, current);
+ data->tid_entry.tid = perf_event_tid(event, current);
header->size += sizeof(data->tid_entry);
}
@@ -2963,13 +2963,13 @@ void perf_prepare_sample(struct perf_event_header *header,
header->size += sizeof(data->addr);
if (sample_type & PERF_SAMPLE_ID) {
- data->id = primary_counter_id(counter);
+ data->id = primary_event_id(event);
header->size += sizeof(data->id);
}
if (sample_type & PERF_SAMPLE_STREAM_ID) {
- data->stream_id = counter->id;
+ data->stream_id = event->id;
header->size += sizeof(data->stream_id);
}
@@ -2985,7 +2985,7 @@ void perf_prepare_sample(struct perf_event_header *header,
header->size += sizeof(data->period);
if (sample_type & PERF_SAMPLE_READ)
- header->size += perf_counter_read_size(counter);
+ header->size += perf_event_read_size(event);
if (sample_type & PERF_SAMPLE_CALLCHAIN) {
int size = 1;
@@ -3011,25 +3011,25 @@ void perf_prepare_sample(struct perf_event_header *header,
}
}
-static void perf_counter_output(struct perf_counter *counter, int nmi,
+static void perf_event_output(struct perf_event *event, int nmi,
struct perf_sample_data *data,
struct pt_regs *regs)
{
struct perf_output_handle handle;
struct perf_event_header header;
- perf_prepare_sample(&header, data, counter, regs);
+ perf_prepare_sample(&header, data, event, regs);
- if (perf_output_begin(&handle, counter, header.size, nmi, 1))
+ if (perf_output_begin(&handle, event, header.size, nmi, 1))
return;
- perf_output_sample(&handle, &header, data, counter);
+ perf_output_sample(&handle, &header, data, event);
perf_output_end(&handle);
}
/*
- * read event
+ * read event_id
*/
struct perf_read_event {
@@ -3040,27 +3040,27 @@ struct perf_read_event {
};
static void
-perf_counter_read_event(struct perf_counter *counter,
+perf_event_read_event(struct perf_event *event,
struct task_struct *task)
{
struct perf_output_handle handle;
struct perf_read_event read_event = {
.header = {
- .type = PERF_EVENT_READ,
+ .type = PERF_RECORD_READ,
.misc = 0,
- .size = sizeof(read_event) + perf_counter_read_size(counter),
+ .size = sizeof(read_event) + perf_event_read_size(event),
},
- .pid = perf_counter_pid(counter, task),
- .tid = perf_counter_tid(counter, task),
+ .pid = perf_event_pid(event, task),
+ .tid = perf_event_tid(event, task),
};
int ret;
- ret = perf_output_begin(&handle, counter, read_event.header.size, 0, 0);
+ ret = perf_output_begin(&handle, event, read_event.header.size, 0, 0);
if (ret)
return;
perf_output_put(&handle, read_event);
- perf_output_read(&handle, counter);
+ perf_output_read(&handle, event);
perf_output_end(&handle);
}
@@ -3073,7 +3073,7 @@ perf_counter_read_event(struct perf_counter *counter,
struct perf_task_event {
struct task_struct *task;
- struct perf_counter_context *task_ctx;
+ struct perf_event_context *task_ctx;
struct {
struct perf_event_header header;
@@ -3083,10 +3083,10 @@ struct perf_task_event {
u32 tid;
u32 ptid;
u64 time;
- } event;
+ } event_id;
};
-static void perf_counter_task_output(struct perf_counter *counter,
+static void perf_event_task_output(struct perf_event *event,
struct perf_task_event *task_event)
{
struct perf_output_handle handle;
@@ -3094,85 +3094,85 @@ static void perf_counter_task_output(struct perf_counter *counter,
struct task_struct *task = task_event->task;
int ret;
- size = task_event->event.header.size;
- ret = perf_output_begin(&handle, counter, size, 0, 0);
+ size = task_event->event_id.header.size;
+ ret = perf_output_begin(&handle, event, size, 0, 0);
if (ret)
return;
- task_event->event.pid = perf_counter_pid(counter, task);
- task_event->event.ppid = perf_counter_pid(counter, current);
+ task_event->event_id.pid = perf_event_pid(event, task);
+ task_event->event_id.ppid = perf_event_pid(event, current);
- task_event->event.tid = perf_counter_tid(counter, task);
- task_event->event.ptid = perf_counter_tid(counter, current);
+ task_event->event_id.tid = perf_event_tid(event, task);
+ task_event->event_id.ptid = perf_event_tid(event, current);
- task_event->event.time = perf_clock();
+ task_event->event_id.time = perf_clock();
- perf_output_put(&handle, task_event->event);
+ perf_output_put(&handle, task_event->event_id);
perf_output_end(&handle);
}
-static int perf_counter_task_match(struct perf_counter *counter)
+static int perf_event_task_match(struct perf_event *event)
{
- if (counter->attr.comm || counter->attr.mmap || counter->attr.task)
+ if (event->attr.comm || event->attr.mmap || event->attr.task)
return 1;
return 0;
}
-static void perf_counter_task_ctx(struct perf_counter_context *ctx,
+static void perf_event_task_ctx(struct perf_event_context *ctx,
struct perf_task_event *task_event)
{
- struct perf_counter *counter;
+ struct perf_event *event;
if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
return;
rcu_read_lock();
- list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
- if (perf_counter_task_match(counter))
- perf_counter_task_output(counter, task_event);
+ list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+ if (perf_event_task_match(event))
+ perf_event_task_output(event, task_event);
}
rcu_read_unlock();
}
-static void perf_counter_task_event(struct perf_task_event *task_event)
+static void perf_event_task_event(struct perf_task_event *task_event)
{
struct perf_cpu_context *cpuctx;
- struct perf_counter_context *ctx = task_event->task_ctx;
+ struct perf_event_context *ctx = task_event->task_ctx;
cpuctx = &get_cpu_var(perf_cpu_context);
- perf_counter_task_ctx(&cpuctx->ctx, task_event);
+ perf_event_task_ctx(&cpuctx->ctx, task_event);
put_cpu_var(perf_cpu_context);
rcu_read_lock();
if (!ctx)
- ctx = rcu_dereference(task_event->task->perf_counter_ctxp);
+ ctx = rcu_dereference(task_event->task->perf_event_ctxp);
if (ctx)
- perf_counter_task_ctx(ctx, task_event);
+ perf_event_task_ctx(ctx, task_event);
rcu_read_unlock();
}
-static void perf_counter_task(struct task_struct *task,
- struct perf_counter_context *task_ctx,
+static void perf_event_task(struct task_struct *task,
+ struct perf_event_context *task_ctx,
int new)
{
struct perf_task_event task_event;
- if (!atomic_read(&nr_comm_counters) &&
- !atomic_read(&nr_mmap_counters) &&
- !atomic_read(&nr_task_counters))
+ if (!atomic_read(&nr_comm_events) &&
+ !atomic_read(&nr_mmap_events) &&
+ !atomic_read(&nr_task_events))
return;
task_event = (struct perf_task_event){
.task = task,
.task_ctx = task_ctx,
- .event = {
+ .event_id = {
.header = {
- .type = new ? PERF_EVENT_FORK : PERF_EVENT_EXIT,
+ .type = new ? PERF_RECORD_FORK : PERF_RECORD_EXIT,
.misc = 0,
- .size = sizeof(task_event.event),
+ .size = sizeof(task_event.event_id),
},
/* .pid */
/* .ppid */
@@ -3181,12 +3181,12 @@ static void perf_counter_task(struct task_struct *task,
},
};
- perf_counter_task_event(&task_event);
+ perf_event_task_event(&task_event);
}
-void perf_counter_fork(struct task_struct *task)
+void perf_event_fork(struct task_struct *task)
{
- perf_counter_task(task, NULL, 1);
+ perf_event_task(task, NULL, 1);
}
/*
@@ -3203,56 +3203,56 @@ struct perf_comm_event {
u32 pid;
u32 tid;
- } event;
+ } event_id;
};
-static void perf_counter_comm_output(struct perf_counter *counter,
+static void perf_event_comm_output(struct perf_event *event,
struct perf_comm_event *comm_event)
{
struct perf_output_handle handle;
- int size = comm_event->event.header.size;
- int ret = perf_output_begin(&handle, counter, size, 0, 0);
+ int size = comm_event->event_id.header.size;
+ int ret = perf_output_begin(&handle, event, size, 0, 0);
if (ret)
return;
- comm_event->event.pid = perf_counter_pid(counter, comm_event->task);
- comm_event->event.tid = perf_counter_tid(counter, comm_event->task);
+ comm_event->event_id.pid = perf_event_pid(event, comm_event->task);
+ comm_event->event_id.tid = perf_event_tid(event, comm_event->task);
- perf_output_put(&handle, comm_event->event);
+ perf_output_put(&handle, comm_event->event_id);
perf_output_copy(&handle, comm_event->comm,
comm_event->comm_size);
perf_output_end(&handle);
}
-static int perf_counter_comm_match(struct perf_counter *counter)
+static int perf_event_comm_match(struct perf_event *event)
{
- if (counter->attr.comm)
+ if (event->attr.comm)
return 1;
return 0;
}
-static void perf_counter_comm_ctx(struct perf_counter_context *ctx,
+static void perf_event_comm_ctx(struct perf_event_context *ctx,
struct perf_comm_event *comm_event)
{
- struct perf_counter *counter;
+ struct perf_event *event;
if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
return;
rcu_read_lock();
- list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
- if (perf_counter_comm_match(counter))
- perf_counter_comm_output(counter, comm_event);
+ list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+ if (perf_event_comm_match(event))
+ perf_event_comm_output(event, comm_event);
}
rcu_read_unlock();
}
-static void perf_counter_comm_event(struct perf_comm_event *comm_event)
+static void perf_event_comm_event(struct perf_comm_event *comm_event)
{
struct perf_cpu_context *cpuctx;
- struct perf_counter_context *ctx;
+ struct perf_event_context *ctx;
unsigned int size;
char comm[TASK_COMM_LEN];
@@ -3263,10 +3263,10 @@ static void perf_counter_comm_event(struct perf_comm_event *comm_event)
comm_event->comm = comm;
comm_event->comm_size = size;
- comm_event->event.header.size = sizeof(comm_event->event) + size;
+ comm_event->event_id.header.size = sizeof(comm_event->event_id) + size;
cpuctx = &get_cpu_var(perf_cpu_context);
- perf_counter_comm_ctx(&cpuctx->ctx, comm_event);
+ perf_event_comm_ctx(&cpuctx->ctx, comm_event);
put_cpu_var(perf_cpu_context);
rcu_read_lock();
@@ -3274,29 +3274,29 @@ static void perf_counter_comm_event(struct perf_comm_event *comm_event)
* doesn't really matter which of the child contexts the
* events ends up in.
*/
- ctx = rcu_dereference(current->perf_counter_ctxp);
+ ctx = rcu_dereference(current->perf_event_ctxp);
if (ctx)
- perf_counter_comm_ctx(ctx, comm_event);
+ perf_event_comm_ctx(ctx, comm_event);
rcu_read_unlock();
}
-void perf_counter_comm(struct task_struct *task)
+void perf_event_comm(struct task_struct *task)
{
struct perf_comm_event comm_event;
- if (task->perf_counter_ctxp)
- perf_counter_enable_on_exec(task);
+ if (task->perf_event_ctxp)
+ perf_event_enable_on_exec(task);
- if (!atomic_read(&nr_comm_counters))
+ if (!atomic_read(&nr_comm_events))
return;
comm_event = (struct perf_comm_event){
.task = task,
/* .comm */
/* .comm_size */
- .event = {
+ .event_id = {
.header = {
- .type = PERF_EVENT_COMM,
+ .type = PERF_RECORD_COMM,
.misc = 0,
/* .size */
},
@@ -3305,7 +3305,7 @@ void perf_counter_comm(struct task_struct *task)
},
};
- perf_counter_comm_event(&comm_event);
+ perf_event_comm_event(&comm_event);
}
/*
@@ -3326,57 +3326,57 @@ struct perf_mmap_event {
u64 start;
u64 len;
u64 pgoff;
- } event;
+ } event_id;
};
-static void perf_counter_mmap_output(struct perf_counter *counter,
+static void perf_event_mmap_output(struct perf_event *event,
struct perf_mmap_event *mmap_event)
{
struct perf_output_handle handle;
- int size = mmap_event->event.header.size;
- int ret = perf_output_begin(&handle, counter, size, 0, 0);
+ int size = mmap_event->event_id.header.size;
+ int ret = perf_output_begin(&handle, event, size, 0, 0);
if (ret)
return;
- mmap_event->event.pid = perf_counter_pid(counter, current);
- mmap_event->event.tid = perf_counter_tid(counter, current);
+ mmap_event->event_id.pid = perf_event_pid(event, current);
+ mmap_event->event_id.tid = perf_event_tid(event, current);
- perf_output_put(&handle, mmap_event->event);
+ perf_output_put(&handle, mmap_event->event_id);
perf_output_copy(&handle, mmap_event->file_name,
mmap_event->file_size);
perf_output_end(&handle);
}
-static int perf_counter_mmap_match(struct perf_counter *counter,
+static int perf_event_mmap_match(struct perf_event *event,
struct perf_mmap_event *mmap_event)
{
- if (counter->attr.mmap)
+ if (event->attr.mmap)
return 1;
return 0;
}
-static void perf_counter_mmap_ctx(struct perf_counter_context *ctx,
+static void perf_event_mmap_ctx(struct perf_event_context *ctx,
struct perf_mmap_event *mmap_event)
{
- struct perf_counter *counter;
+ struct perf_event *event;
if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
return;
rcu_read_lock();
- list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
- if (perf_counter_mmap_match(counter, mmap_event))
- perf_counter_mmap_output(counter, mmap_event);
+ list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+ if (perf_event_mmap_match(event, mmap_event))
+ perf_event_mmap_output(event, mmap_event);
}
rcu_read_unlock();
}
-static void perf_counter_mmap_event(struct perf_mmap_event *mmap_event)
+static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
{
struct perf_cpu_context *cpuctx;
- struct perf_counter_context *ctx;
+ struct perf_event_context *ctx;
struct vm_area_struct *vma = mmap_event->vma;
struct file *file = vma->vm_file;
unsigned int size;
@@ -3424,10 +3424,10 @@ got_name:
mmap_event->file_name = name;
mmap_event->file_size = size;
- mmap_event->event.header.size = sizeof(mmap_event->event) + size;
+ mmap_event->event_id.header.size = sizeof(mmap_event->event_id) + size;
cpuctx = &get_cpu_var(perf_cpu_context);
- perf_counter_mmap_ctx(&cpuctx->ctx, mmap_event);
+ perf_event_mmap_ctx(&cpuctx->ctx, mmap_event);
put_cpu_var(perf_cpu_context);
rcu_read_lock();
@@ -3435,28 +3435,28 @@ got_name:
* doesn't really matter which of the child contexts the
* events ends up in.
*/
- ctx = rcu_dereference(current->perf_counter_ctxp);
+ ctx = rcu_dereference(current->perf_event_ctxp);
if (ctx)
- perf_counter_mmap_ctx(ctx, mmap_event);
+ perf_event_mmap_ctx(ctx, mmap_event);
rcu_read_unlock();
kfree(buf);
}
-void __perf_counter_mmap(struct vm_area_struct *vma)
+void __perf_event_mmap(struct vm_area_struct *vma)
{
struct perf_mmap_event mmap_event;
- if (!atomic_read(&nr_mmap_counters))
+ if (!atomic_read(&nr_mmap_events))
return;
mmap_event = (struct perf_mmap_event){
.vma = vma,
/* .file_name */
/* .file_size */
- .event = {
+ .event_id = {
.header = {
- .type = PERF_EVENT_MMAP,
+ .type = PERF_RECORD_MMAP,
.misc = 0,
/* .size */
},
@@ -3468,14 +3468,14 @@ void __perf_counter_mmap(struct vm_area_struct *vma)
},
};
- perf_counter_mmap_event(&mmap_event);
+ perf_event_mmap_event(&mmap_event);
}
/*
* IRQ throttle logging
*/
-static void perf_log_throttle(struct perf_counter *counter, int enable)
+static void perf_log_throttle(struct perf_event *event, int enable)
{
struct perf_output_handle handle;
int ret;
@@ -3487,19 +3487,19 @@ static void perf_log_throttle(struct perf_counter *counter, int enable)
u64 stream_id;
} throttle_event = {
.header = {
- .type = PERF_EVENT_THROTTLE,
+ .type = PERF_RECORD_THROTTLE,
.misc = 0,
.size = sizeof(throttle_event),
},
.time = perf_clock(),
- .id = primary_counter_id(counter),
- .stream_id = counter->id,
+ .id = primary_event_id(event),
+ .stream_id = event->id,
};
if (enable)
- throttle_event.header.type = PERF_EVENT_UNTHROTTLE;
+ throttle_event.header.type = PERF_RECORD_UNTHROTTLE;
- ret = perf_output_begin(&handle, counter, sizeof(throttle_event), 1, 0);
+ ret = perf_output_begin(&handle, event, sizeof(throttle_event), 1, 0);
if (ret)
return;
@@ -3508,18 +3508,18 @@ static void perf_log_throttle(struct perf_counter *counter, int enable)
}
/*
- * Generic counter overflow handling, sampling.
+ * Generic event overflow handling, sampling.
*/
-static int __perf_counter_overflow(struct perf_counter *counter, int nmi,
+static int __perf_event_overflow(struct perf_event *event, int nmi,
int throttle, struct perf_sample_data *data,
struct pt_regs *regs)
{
- int events = atomic_read(&counter->event_limit);
- struct hw_perf_counter *hwc = &counter->hw;
+ int events = atomic_read(&event->event_limit);
+ struct hw_perf_event *hwc = &event->hw;
int ret = 0;
- throttle = (throttle && counter->pmu->unthrottle != NULL);
+ throttle = (throttle && event->pmu->unthrottle != NULL);
if (!throttle) {
hwc->interrupts++;
@@ -3527,73 +3527,73 @@ static int __perf_counter_overflow(struct perf_counter *counter, int nmi,
if (hwc->interrupts != MAX_INTERRUPTS) {
hwc->interrupts++;
if (HZ * hwc->interrupts >
- (u64)sysctl_perf_counter_sample_rate) {
+ (u64)sysctl_perf_event_sample_rate) {
hwc->interrupts = MAX_INTERRUPTS;
- perf_log_throttle(counter, 0);
+ perf_log_throttle(event, 0);
ret = 1;
}
} else {
/*
- * Keep re-disabling counters even though on the previous
+ * Keep re-disabling events even though on the previous
* pass we disabled it - just in case we raced with a
- * sched-in and the counter got enabled again:
+ * sched-in and the event got enabled again:
*/
ret = 1;
}
}
- if (counter->attr.freq) {
+ if (event->attr.freq) {
u64 now = perf_clock();
s64 delta = now - hwc->freq_stamp;
hwc->freq_stamp = now;
if (delta > 0 && delta < TICK_NSEC)
- perf_adjust_period(counter, NSEC_PER_SEC / (int)delta);
+ perf_adjust_period(event, NSEC_PER_SEC / (int)delta);
}
/*
* XXX event_limit might not quite work as expected on inherited
- * counters
+ * events
*/
- counter->pending_kill = POLL_IN;
- if (events && atomic_dec_and_test(&counter->event_limit)) {
+ event->pending_kill = POLL_IN;
+ if (events && atomic_dec_and_test(&event->event_limit)) {
ret = 1;
- counter->pending_kill = POLL_HUP;
+ event->pending_kill = POLL_HUP;
if (nmi) {
- counter->pending_disable = 1;
- perf_pending_queue(&counter->pending,
- perf_pending_counter);
+ event->pending_disable = 1;
+ perf_pending_queue(&event->pending,
+ perf_pending_event);
} else
- perf_counter_disable(counter);
+ perf_event_disable(event);
}
- perf_counter_output(counter, nmi, data, regs);
+ perf_event_output(event, nmi, data, regs);
return ret;
}
-int perf_counter_overflow(struct perf_counter *counter, int nmi,
+int perf_event_overflow(struct perf_event *event, int nmi,
struct perf_sample_data *data,
struct pt_regs *regs)
{
- return __perf_counter_overflow(counter, nmi, 1, data, regs);
+ return __perf_event_overflow(event, nmi, 1, data, regs);
}
/*
- * Generic software counter infrastructure
+ * Generic software event infrastructure
*/
/*
- * We directly increment counter->count and keep a second value in
- * counter->hw.period_left to count intervals. This period counter
+ * We directly increment event->count and keep a second value in
+ * event->hw.period_left to count intervals. This period event
* is kept in the range [-sample_period, 0] so that we can use the
* sign as trigger.
*/
-static u64 perf_swcounter_set_period(struct perf_counter *counter)
+static u64 perf_swevent_set_period(struct perf_event *event)
{
- struct hw_perf_counter *hwc = &counter->hw;
+ struct hw_perf_event *hwc = &event->hw;
u64 period = hwc->last_period;
u64 nr, offset;
s64 old, val;
@@ -3614,22 +3614,22 @@ again:
return nr;
}
-static void perf_swcounter_overflow(struct perf_counter *counter,
+static void perf_swevent_overflow(struct perf_event *event,
int nmi, struct perf_sample_data *data,
struct pt_regs *regs)
{
- struct hw_perf_counter *hwc = &counter->hw;
+ struct hw_perf_event *hwc = &event->hw;
int throttle = 0;
u64 overflow;
- data->period = counter->hw.last_period;
- overflow = perf_swcounter_set_period(counter);
+ data->period = event->hw.last_period;
+ overflow = perf_swevent_set_period(event);
if (hwc->interrupts == MAX_INTERRUPTS)
return;
for (; overflow; overflow--) {
- if (__perf_counter_overflow(counter, nmi, throttle,
+ if (__perf_event_overflow(event, nmi, throttle,
data, regs)) {
/*
* We inhibit the overflow from happening when
@@ -3641,20 +3641,20 @@ static void perf_swcounter_overflow(struct perf_counter *counter,
}
}
-static void perf_swcounter_unthrottle(struct perf_counter *counter)
+static void perf_swevent_unthrottle(struct perf_event *event)
{
/*
* Nothing to do, we already reset hwc->interrupts.
*/
}
-static void perf_swcounter_add(struct perf_counter *counter, u64 nr,
+static void perf_swevent_add(struct perf_event *event, u64 nr,
int nmi, struct perf_sample_data *data,
struct pt_regs *regs)
{
- struct hw_perf_counter *hwc = &counter->hw;
+ struct hw_perf_event *hwc = &event->hw;
- atomic64_add(nr, &counter->count);
+ atomic64_add(nr, &event->count);
if (!hwc->sample_period)
return;
@@ -3663,29 +3663,29 @@ static void perf_swcounter_add(struct perf_counter *counter, u64 nr,
return;
if (!atomic64_add_negative(nr, &hwc->period_left))
- perf_swcounter_overflow(counter, nmi, data, regs);
+ perf_swevent_overflow(event, nmi, data, regs);
}
-static int perf_swcounter_is_counting(struct perf_counter *counter)
+static int perf_swevent_is_counting(struct perf_event *event)
{
/*
- * The counter is active, we're good!
+ * The event is active, we're good!
*/
- if (counter->state == PERF_COUNTER_STATE_ACTIVE)
+ if (event->state == PERF_EVENT_STATE_ACTIVE)
return 1;
/*
- * The counter is off/error, not counting.
+ * The event is off/error, not counting.
*/
- if (counter->state != PERF_COUNTER_STATE_INACTIVE)
+ if (event->state != PERF_EVENT_STATE_INACTIVE)
return 0;
/*
- * The counter is inactive, if the context is active
+ * The event is inactive, if the context is active
* we're part of a group that didn't make it on the 'pmu',
* not counting.
*/
- if (counter->ctx->is_active)
+ if (event->ctx->is_active)
return 0;
/*
@@ -3696,49 +3696,49 @@ static int perf_swcounter_is_counting(struct perf_counter *counter)
return 1;
}
-static int perf_swcounter_match(struct perf_counter *counter,
+static int perf_swevent_match(struct perf_event *event,
enum perf_type_id type,
u32 event_id, struct pt_regs *regs)
{
- if (!perf_swcounter_is_counting(counter))
+ if (!perf_swevent_is_counting(event))
return 0;
- if (counter->attr.type != type)
+ if (event->attr.type != type)
return 0;
- if (counter->attr.config != event_id)
+ if (event->attr.config != event_id)
return 0;
if (regs) {
- if (counter->attr.exclude_user && user_mode(regs))
+ if (event->attr.exclude_user && user_mode(regs))
return 0;
- if (counter->attr.exclude_kernel && !user_mode(regs))
+ if (event->attr.exclude_kernel && !user_mode(regs))
return 0;
}
return 1;
}
-static void perf_swcounter_ctx_event(struct perf_counter_context *ctx,
+static void perf_swevent_ctx_event(struct perf_event_context *ctx,
enum perf_type_id type,
u32 event_id, u64 nr, int nmi,
struct perf_sample_data *data,
struct pt_regs *regs)
{
- struct perf_counter *counter;
+ struct perf_event *event;
if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
return;
rcu_read_lock();
- list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
- if (perf_swcounter_match(counter, type, event_id, regs))
- perf_swcounter_add(counter, nr, nmi, data, regs);
+ list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+ if (perf_swevent_match(event, type, event_id, regs))
+ perf_swevent_add(event, nr, nmi, data, regs);
}
rcu_read_unlock();
}
-static int *perf_swcounter_recursion_context(struct perf_cpu_context *cpuctx)
+static int *perf_swevent_recursion_context(struct perf_cpu_context *cpuctx)
{
if (in_nmi())
return &cpuctx->recursion[3];
@@ -3752,14 +3752,14 @@ static int *perf_swcounter_recursion_context(struct perf_cpu_context *cpuctx)
return &cpuctx->recursion[0];
}
-static void do_perf_swcounter_event(enum perf_type_id type, u32 event,
+static void do_perf_sw_event(enum perf_type_id type, u32 event_id,
u64 nr, int nmi,
struct perf_sample_data *data,
struct pt_regs *regs)
{
struct perf_cpu_context *cpuctx = &get_cpu_var(perf_cpu_context);
- int *recursion = perf_swcounter_recursion_context(cpuctx);
- struct perf_counter_context *ctx;
+ int *recursion = perf_swevent_recursion_context(cpuctx);
+ struct perf_event_context *ctx;
if (*recursion)
goto out;
@@ -3767,16 +3767,16 @@ static void do_perf_swcounter_event(enum perf_type_id type, u32 event,
(*recursion)++;
barrier();
- perf_swcounter_ctx_event(&cpuctx->ctx, type, event,
+ perf_swevent_ctx_event(&cpuctx->ctx, type, event_id,
nr, nmi, data, regs);
rcu_read_lock();
/*
* doesn't really matter which of the child contexts the
* events ends up in.
*/
- ctx = rcu_dereference(current->perf_counter_ctxp);
+ ctx = rcu_dereference(current->perf_event_ctxp);
if (ctx)
- perf_swcounter_ctx_event(ctx, type, event, nr, nmi, data, regs);
+ perf_swevent_ctx_event(ctx, type, event_id, nr, nmi, data, regs);
rcu_read_unlock();
barrier();
@@ -3786,57 +3786,57 @@ out:
put_cpu_var(perf_cpu_context);
}
-void __perf_swcounter_event(u32 event, u64 nr, int nmi,
+void __perf_sw_event(u32 event_id, u64 nr, int nmi,
struct pt_regs *regs, u64 addr)
{
struct perf_sample_data data = {
.addr = addr,
};
- do_perf_swcounter_event(PERF_TYPE_SOFTWARE, event, nr, nmi,
+ do_perf_sw_event(PERF_TYPE_SOFTWARE, event_id, nr, nmi,
&data, regs);
}
-static void perf_swcounter_read(struct perf_counter *counter)
+static void perf_swevent_read(struct perf_event *event)
{
}
-static int perf_swcounter_enable(struct perf_counter *counter)
+static int perf_swevent_enable(struct perf_event *event)
{
- struct hw_perf_counter *hwc = &counter->hw;
+ struct hw_perf_event *hwc = &event->hw;
if (hwc->sample_period) {
hwc->last_period = hwc->sample_period;
- perf_swcounter_set_period(counter);
+ perf_swevent_set_period(event);
}
return 0;
}
-static void perf_swcounter_disable(struct perf_counter *counter)
+static void perf_swevent_disable(struct perf_event *event)
{
}
static const struct pmu perf_ops_generic = {
- .enable = perf_swcounter_enable,
- .disable = perf_swcounter_disable,
- .read = perf_swcounter_read,
- .unthrottle = perf_swcounter_unthrottle,
+ .enable = perf_swevent_enable,
+ .disable = perf_swevent_disable,
+ .read = perf_swevent_read,
+ .unthrottle = perf_swevent_unthrottle,
};
/*
- * hrtimer based swcounter callback
+ * hrtimer based swevent callback
*/
-static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer)
+static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer)
{
enum hrtimer_restart ret = HRTIMER_RESTART;
struct perf_sample_data data;
struct pt_regs *regs;
- struct perf_counter *counter;
+ struct perf_event *event;
u64 period;
- counter = container_of(hrtimer, struct perf_counter, hw.hrtimer);
- counter->pmu->read(counter);
+ event = container_of(hrtimer, struct perf_event, hw.hrtimer);
+ event->pmu->read(event);
data.addr = 0;
regs = get_irq_regs();
@@ -3844,45 +3844,45 @@ static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer)
* In case we exclude kernel IPs or are somehow not in interrupt
* context, provide the next best thing, the user IP.
*/
- if ((counter->attr.exclude_kernel || !regs) &&
- !counter->attr.exclude_user)
+ if ((event->attr.exclude_kernel || !regs) &&
+ !event->attr.exclude_user)
regs = task_pt_regs(current);
if (regs) {
- if (perf_counter_overflow(counter, 0, &data, regs))
+ if (perf_event_overflow(event, 0, &data, regs))
ret = HRTIMER_NORESTART;
}
- period = max_t(u64, 10000, counter->hw.sample_period);
+ period = max_t(u64, 10000, event->hw.sample_period);
hrtimer_forward_now(hrtimer, ns_to_ktime(period));
return ret;
}
/*
- * Software counter: cpu wall time clock
+ * Software event: cpu wall time clock
*/
-static void cpu_clock_perf_counter_update(struct perf_counter *counter)
+static void cpu_clock_perf_event_update(struct perf_event *event)
{
int cpu = raw_smp_processor_id();
s64 prev;
u64 now;
now = cpu_clock(cpu);
- prev = atomic64_read(&counter->hw.prev_count);
- atomic64_set(&counter->hw.prev_count, now);
- atomic64_add(now - prev, &counter->count);
+ prev = atomic64_read(&event->hw.prev_count);
+ atomic64_set(&event->hw.prev_count, now);
+ atomic64_add(now - prev, &event->count);
}
-static int cpu_clock_perf_counter_enable(struct perf_counter *counter)
+static int cpu_clock_perf_event_enable(struct perf_event *event)
{
- struct hw_perf_counter *hwc = &counter->hw;
+ struct hw_perf_event *hwc = &event->hw;
int cpu = raw_smp_processor_id();
atomic64_set(&hwc->prev_count, cpu_clock(cpu));
hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- hwc->hrtimer.function = perf_swcounter_hrtimer;
+ hwc->hrtimer.function = perf_swevent_hrtimer;
if (hwc->sample_period) {
u64 period = max_t(u64, 10000, hwc->sample_period);
__hrtimer_start_range_ns(&hwc->hrtimer,
@@ -3893,48 +3893,48 @@ static int cpu_clock_perf_counter_enable(struct perf_counter *counter)
return 0;
}
-static void cpu_clock_perf_counter_disable(struct perf_counter *counter)
+static void cpu_clock_perf_event_disable(struct perf_event *event)
{
- if (counter->hw.sample_period)
- hrtimer_cancel(&counter->hw.hrtimer);
- cpu_clock_perf_counter_update(counter);
+ if (event->hw.sample_period)
+ hrtimer_cancel(&event->hw.hrtimer);
+ cpu_clock_perf_event_update(event);
}
-static void cpu_clock_perf_counter_read(struct perf_counter *counter)
+static void cpu_clock_perf_event_read(struct perf_event *event)
{
- cpu_clock_perf_counter_update(counter);
+ cpu_clock_perf_event_update(event);
}
static const struct pmu perf_ops_cpu_clock = {
- .enable = cpu_clock_perf_counter_enable,
- .disable = cpu_clock_perf_counter_disable,
- .read = cpu_clock_perf_counter_read,
+ .enable = cpu_clock_perf_event_enable,
+ .disable = cpu_clock_perf_event_disable,
+ .read = cpu_clock_perf_event_read,
};
/*
- * Software counter: task time clock
+ * Software event: task time clock
*/
-static void task_clock_perf_counter_update(struct perf_counter *counter, u64 now)
+static void task_clock_perf_event_update(struct perf_event *event, u64 now)
{
u64 prev;
s64 delta;
- prev = atomic64_xchg(&counter->hw.prev_count, now);
+ prev = atomic64_xchg(&event->hw.prev_count, now);
delta = now - prev;
- atomic64_add(delta, &counter->count);
+ atomic64_add(delta, &event->count);
}
-static int task_clock_perf_counter_enable(struct perf_counter *counter)
+static int task_clock_perf_event_enable(struct perf_event *event)
{
- struct hw_perf_counter *hwc = &counter->hw;
+ struct hw_perf_event *hwc = &event->hw;
u64 now;
- now = counter->ctx->time;
+ now = event->ctx->time;
atomic64_set(&hwc->prev_count, now);
hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- hwc->hrtimer.function = perf_swcounter_hrtimer;
+ hwc->hrtimer.function = perf_swevent_hrtimer;
if (hwc->sample_period) {
u64 period = max_t(u64, 10000, hwc->sample_period);
__hrtimer_start_range_ns(&hwc->hrtimer,
@@ -3945,38 +3945,38 @@ static int task_clock_perf_counter_enable(struct perf_counter *counter)
return 0;
}
-static void task_clock_perf_counter_disable(struct perf_counter *counter)
+static void task_clock_perf_event_disable(struct perf_event *event)
{
- if (counter->hw.sample_period)
- hrtimer_cancel(&counter->hw.hrtimer);
- task_clock_perf_counter_update(counter, counter->ctx->time);
+ if (event->hw.sample_period)
+ hrtimer_cancel(&event->hw.hrtimer);
+ task_clock_perf_event_update(event, event->ctx->time);
}
-static void task_clock_perf_counter_read(struct perf_counter *counter)
+static void task_clock_perf_event_read(struct perf_event *event)
{
u64 time;
if (!in_nmi()) {
- update_context_time(counter->ctx);
- time = counter->ctx->time;
+ update_context_time(event->ctx);
+ time = event->ctx->time;
} else {
u64 now = perf_clock();
- u64 delta = now - counter->ctx->timestamp;
- time = counter->ctx->time + delta;
+ u64 delta = now - event->ctx->timestamp;
+ time = event->ctx->time + delta;
}
- task_clock_perf_counter_update(counter, time);
+ task_clock_perf_event_update(event, time);
}
static const struct pmu perf_ops_task_clock = {
- .enable = task_clock_perf_counter_enable,
- .disable = task_clock_perf_counter_disable,
- .read = task_clock_perf_counter_read,
+ .enable = task_clock_perf_event_enable,
+ .disable = task_clock_perf_event_disable,
+ .read = task_clock_perf_event_read,
};
#ifdef CONFIG_EVENT_PROFILE
-void perf_tpcounter_event(int event_id, u64 addr, u64 count, void *record,
+void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
int entry_size)
{
struct perf_raw_record raw = {
@@ -3994,62 +3994,62 @@ void perf_tpcounter_event(int event_id, u64 addr, u64 count, void *record,
if (!regs)
regs = task_pt_regs(current);
- do_perf_swcounter_event(PERF_TYPE_TRACEPOINT, event_id, count, 1,
+ do_perf_sw_event(PERF_TYPE_TRACEPOINT, event_id, count, 1,
&data, regs);
}
-EXPORT_SYMBOL_GPL(perf_tpcounter_event);
+EXPORT_SYMBOL_GPL(perf_tp_event);
extern int ftrace_profile_enable(int);
extern void ftrace_profile_disable(int);
-static void tp_perf_counter_destroy(struct perf_counter *counter)
+static void tp_perf_event_destroy(struct perf_event *event)
{
- ftrace_profile_disable(counter->attr.config);
+ ftrace_profile_disable(event->attr.config);
}
-static const struct pmu *tp_perf_counter_init(struct perf_counter *counter)
+static const struct pmu *tp_perf_event_init(struct perf_event *event)
{
/*
* Raw tracepoint data is a severe data leak, only allow root to
* have these.
*/
- if ((counter->attr.sample_type & PERF_SAMPLE_RAW) &&
+ if ((event->attr.sample_type & PERF_SAMPLE_RAW) &&
perf_paranoid_tracepoint_raw() &&
!capable(CAP_SYS_ADMIN))
return ERR_PTR(-EPERM);
- if (ftrace_profile_enable(counter->attr.config))
+ if (ftrace_profile_enable(event->attr.config))
return NULL;
- counter->destroy = tp_perf_counter_destroy;
+ event->destroy = tp_perf_event_destroy;
return &perf_ops_generic;
}
#else
-static const struct pmu *tp_perf_counter_init(struct perf_counter *counter)
+static const struct pmu *tp_perf_event_init(struct perf_event *event)
{
return NULL;
}
#endif
-atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX];
+atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX];
-static void sw_perf_counter_destroy(struct perf_counter *counter)
+static void sw_perf_event_destroy(struct perf_event *event)
{
- u64 event_id = counter->attr.config;
+ u64 event_id = event->attr.config;
- WARN_ON(counter->parent);
+ WARN_ON(event->parent);
- atomic_dec(&perf_swcounter_enabled[event_id]);
+ atomic_dec(&perf_swevent_enabled[event_id]);
}
-static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
+static const struct pmu *sw_perf_event_init(struct perf_event *event)
{
const struct pmu *pmu = NULL;
- u64 event_id = counter->attr.config;
+ u64 event_id = event->attr.config;
/*
- * Software counters (currently) can't in general distinguish
+ * Software events (currently) can't in general distinguish
* between user, kernel and hypervisor events.
* However, context switches and cpu migrations are considered
* to be kernel events, and page faults are never hypervisor
@@ -4062,10 +4062,10 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
break;
case PERF_COUNT_SW_TASK_CLOCK:
/*
- * If the user instantiates this as a per-cpu counter,
- * use the cpu_clock counter instead.
+ * If the user instantiates this as a per-cpu event,
+ * use the cpu_clock event instead.
*/
- if (counter->ctx->task)
+ if (event->ctx->task)
pmu = &perf_ops_task_clock;
else
pmu = &perf_ops_cpu_clock;
@@ -4076,9 +4076,9 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
case PERF_COUNT_SW_PAGE_FAULTS_MAJ:
case PERF_COUNT_SW_CONTEXT_SWITCHES:
case PERF_COUNT_SW_CPU_MIGRATIONS:
- if (!counter->parent) {
- atomic_inc(&perf_swcounter_enabled[event_id]);
- counter->destroy = sw_perf_counter_destroy;
+ if (!event->parent) {
+ atomic_inc(&perf_swevent_enabled[event_id]);
+ event->destroy = sw_perf_event_destroy;
}
pmu = &perf_ops_generic;
break;
@@ -4088,62 +4088,62 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
}
/*
- * Allocate and initialize a counter structure
+ * Allocate and initialize a event structure
*/
-static struct perf_counter *
-perf_counter_alloc(struct perf_counter_attr *attr,
+static struct perf_event *
+perf_event_alloc(struct perf_event_attr *attr,
int cpu,
- struct perf_counter_context *ctx,
- struct perf_counter *group_leader,
- struct perf_counter *parent_counter,
+ struct perf_event_context *ctx,
+ struct perf_event *group_leader,
+ struct perf_event *parent_event,
gfp_t gfpflags)
{
const struct pmu *pmu;
- struct perf_counter *counter;
- struct hw_perf_counter *hwc;
+ struct perf_event *event;
+ struct hw_perf_event *hwc;
long err;
- counter = kzalloc(sizeof(*counter), gfpflags);
- if (!counter)
+ event = kzalloc(sizeof(*event), gfpflags);
+ if (!event)
return ERR_PTR(-ENOMEM);
/*
- * Single counters are their own group leaders, with an
+ * Single events are their own group leaders, with an
* empty sibling list:
*/
if (!group_leader)
- group_leader = counter;
+ group_leader = event;
- mutex_init(&counter->child_mutex);
- INIT_LIST_HEAD(&counter->child_list);
+ mutex_init(&event->child_mutex);
+ INIT_LIST_HEAD(&event->child_list);
- INIT_LIST_HEAD(&counter->group_entry);
- INIT_LIST_HEAD(&counter->event_entry);
- INIT_LIST_HEAD(&counter->sibling_list);
- init_waitqueue_head(&counter->waitq);
+ INIT_LIST_HEAD(&event->group_entry);
+ INIT_LIST_HEAD(&event->event_entry);
+ INIT_LIST_HEAD(&event->sibling_list);
+ init_waitqueue_head(&event->waitq);
- mutex_init(&counter->mmap_mutex);
+ mutex_init(&event->mmap_mutex);
- counter->cpu = cpu;
- counter->attr = *attr;
- counter->group_leader = group_leader;
- counter->pmu = NULL;
- counter->ctx = ctx;
- counter->oncpu = -1;
+ event->cpu = cpu;
+ event->attr = *attr;
+ event->group_leader = group_leader;
+ event->pmu = NULL;
+ event->ctx = ctx;
+ event->oncpu = -1;
- counter->parent = parent_counter;
+ event->parent = parent_event;
- counter->ns = get_pid_ns(current->nsproxy->pid_ns);
- counter->id = atomic64_inc_return(&perf_counter_id);
+ event->ns = get_pid_ns(current->nsproxy->pid_ns);
+ event->id = atomic64_inc_return(&perf_event_id);
- counter->state = PERF_COUNTER_STATE_INACTIVE;
+ event->state = PERF_EVENT_STATE_INACTIVE;
if (attr->disabled)
- counter->state = PERF_COUNTER_STATE_OFF;
+ event->state = PERF_EVENT_STATE_OFF;
pmu = NULL;
- hwc = &counter->hw;
+ hwc = &event->hw;
hwc->sample_period = attr->sample_period;
if (attr->freq && attr->sample_freq)
hwc->sample_period = 1;
@@ -4152,7 +4152,7 @@ perf_counter_alloc(struct perf_counter_attr *attr,
atomic64_set(&hwc->period_left, hwc->sample_period);
/*
- * we currently do not support PERF_FORMAT_GROUP on inherited counters
+ * we currently do not support PERF_FORMAT_GROUP on inherited events
*/
if (attr->inherit && (attr->read_format & PERF_FORMAT_GROUP))
goto done;
@@ -4161,15 +4161,15 @@ perf_counter_alloc(struct perf_counter_attr *attr,
case PERF_TYPE_RAW:
case PERF_TYPE_HARDWARE:
case PERF_TYPE_HW_CACHE:
- pmu = hw_perf_counter_init(counter);
+ pmu = hw_perf_event_init(event);
break;
case PERF_TYPE_SOFTWARE:
- pmu = sw_perf_counter_init(counter);
+ pmu = sw_perf_event_init(event);
break;
case PERF_TYPE_TRACEPOINT:
- pmu = tp_perf_counter_init(counter);
+ pmu = tp_perf_event_init(event);
break;
default:
@@ -4183,29 +4183,29 @@ done:
err = PTR_ERR(pmu);
if (err) {
- if (counter->ns)
- put_pid_ns(counter->ns);
- kfree(counter);
+ if (event->ns)
+ put_pid_ns(event->ns);
+ kfree(event);
return ERR_PTR(err);
}
- counter->pmu = pmu;
+ event->pmu = pmu;
- if (!counter->parent) {
- atomic_inc(&nr_counters);
- if (counter->attr.mmap)
- atomic_inc(&nr_mmap_counters);
- if (counter->attr.comm)
- atomic_inc(&nr_comm_counters);
- if (counter->attr.task)
- atomic_inc(&nr_task_counters);
+ if (!event->parent) {
+ atomic_inc(&nr_events);
+ if (event->attr.mmap)
+ atomic_inc(&nr_mmap_events);
+ if (event->attr.comm)
+ atomic_inc(&nr_comm_events);
+ if (event->attr.task)
+ atomic_inc(&nr_task_events);
}
- return counter;
+ return event;
}
-static int perf_copy_attr(struct perf_counter_attr __user *uattr,
- struct perf_counter_attr *attr)
+static int perf_copy_attr(struct perf_event_attr __user *uattr,
+ struct perf_event_attr *attr)
{
u32 size;
int ret;
@@ -4284,11 +4284,11 @@ err_size:
goto out;
}
-int perf_counter_set_output(struct perf_counter *counter, int output_fd)
+int perf_event_set_output(struct perf_event *event, int output_fd)
{
- struct perf_counter *output_counter = NULL;
+ struct perf_event *output_event = NULL;
struct file *output_file = NULL;
- struct perf_counter *old_output;
+ struct perf_event *old_output;
int fput_needed = 0;
int ret = -EINVAL;
@@ -4302,28 +4302,28 @@ int perf_counter_set_output(struct perf_counter *counter, int output_fd)
if (output_file->f_op != &perf_fops)
goto out;
- output_counter = output_file->private_data;
+ output_event = output_file->private_data;
/* Don't chain output fds */
- if (output_counter->output)
+ if (output_event->output)
goto out;
/* Don't set an output fd when we already have an output channel */
- if (counter->data)
+ if (event->data)
goto out;
atomic_long_inc(&output_file->f_count);
set:
- mutex_lock(&counter->mmap_mutex);
- old_output = counter->output;
- rcu_assign_pointer(counter->output, output_counter);
- mutex_unlock(&counter->mmap_mutex);
+ mutex_lock(&event->mmap_mutex);
+ old_output = event->output;
+ rcu_assign_pointer(event->output, output_event);
+ mutex_unlock(&event->mmap_mutex);
if (old_output) {
/*
* we need to make sure no existing perf_output_*()
- * is still referencing this counter.
+ * is still referencing this event.
*/
synchronize_rcu();
fput(old_output->filp);
@@ -4336,21 +4336,21 @@ out:
}
/**
- * sys_perf_counter_open - open a performance counter, associate it to a task/cpu
+ * sys_perf_event_open - open a performance event, associate it to a task/cpu
*
- * @attr_uptr: event type attributes for monitoring/sampling
+ * @attr_uptr: event_id type attributes for monitoring/sampling
* @pid: target pid
* @cpu: target cpu
- * @group_fd: group leader counter fd
+ * @group_fd: group leader event fd
*/
-SYSCALL_DEFINE5(perf_counter_open,
- struct perf_counter_attr __user *, attr_uptr,
+SYSCALL_DEFINE5(perf_event_open,
+ struct perf_event_attr __user *, attr_uptr,
pid_t, pid, int, cpu, int, group_fd, unsigned long, flags)
{
- struct perf_counter *counter, *group_leader;
- struct perf_counter_attr attr;
- struct perf_counter_context *ctx;
- struct file *counter_file = NULL;
+ struct perf_event *event, *group_leader;
+ struct perf_event_attr attr;
+ struct perf_event_context *ctx;
+ struct file *event_file = NULL;
struct file *group_file = NULL;
int fput_needed = 0;
int fput_needed2 = 0;
@@ -4370,7 +4370,7 @@ SYSCALL_DEFINE5(perf_counter_open,
}
if (attr.freq) {
- if (attr.sample_freq > sysctl_perf_counter_sample_rate)
+ if (attr.sample_freq > sysctl_perf_event_sample_rate)
return -EINVAL;
}
@@ -4382,7 +4382,7 @@ SYSCALL_DEFINE5(perf_counter_open,
return PTR_ERR(ctx);
/*
- * Look up the group leader (we will attach this counter to it):
+ * Look up the group leader (we will attach this event to it):
*/
group_leader = NULL;
if (group_fd != -1 && !(flags & PERF_FLAG_FD_NO_GROUP)) {
@@ -4413,45 +4413,45 @@ SYSCALL_DEFINE5(perf_counter_open,
goto err_put_context;
}
- counter = perf_counter_alloc(&attr, cpu, ctx, group_leader,
+ event = perf_event_alloc(&attr, cpu, ctx, group_leader,
NULL, GFP_KERNEL);
- err = PTR_ERR(counter);
- if (IS_ERR(counter))
+ err = PTR_ERR(event);
+ if (IS_ERR(event))
goto err_put_context;
- err = anon_inode_getfd("[perf_counter]", &perf_fops, counter, 0);
+ err = anon_inode_getfd("[perf_event]", &perf_fops, event, 0);
if (err < 0)
goto err_free_put_context;
- counter_file = fget_light(err, &fput_needed2);
- if (!counter_file)
+ event_file = fget_light(err, &fput_needed2);
+ if (!event_file)
goto err_free_put_context;
if (flags & PERF_FLAG_FD_OUTPUT) {
- err = perf_counter_set_output(counter, group_fd);
+ err = perf_event_set_output(event, group_fd);
if (err)
goto err_fput_free_put_context;
}
- counter->filp = counter_file;
+ event->filp = event_file;
WARN_ON_ONCE(ctx->parent_ctx);
mutex_lock(&ctx->mutex);
- perf_install_in_context(ctx, counter, cpu);
+ perf_install_in_context(ctx, event, cpu);
++ctx->generation;
mutex_unlock(&ctx->mutex);
- counter->owner = current;
+ event->owner = current;
get_task_struct(current);
- mutex_lock(&current->perf_counter_mutex);
- list_add_tail(&counter->owner_entry, &current->perf_counter_list);
- mutex_unlock(&current->perf_counter_mutex);
+ mutex_lock(&current->perf_event_mutex);
+ list_add_tail(&event->owner_entry, &current->perf_event_list);
+ mutex_unlock(&current->perf_event_mutex);
err_fput_free_put_context:
- fput_light(counter_file, fput_needed2);
+ fput_light(event_file, fput_needed2);
err_free_put_context:
if (err < 0)
- kfree(counter);
+ kfree(event);
err_put_context:
if (err < 0)
@@ -4463,88 +4463,88 @@ err_put_context:
}
/*
- * inherit a counter from parent task to child task:
+ * inherit a event from parent task to child task:
*/
-static struct perf_counter *
-inherit_counter(struct perf_counter *parent_counter,
+static struct perf_event *
+inherit_event(struct perf_event *parent_event,
struct task_struct *parent,
- struct perf_counter_context *parent_ctx,
+ struct perf_event_context *parent_ctx,
struct task_struct *child,
- struct perf_counter *group_leader,
- struct perf_counter_context *child_ctx)
+ struct perf_event *group_leader,
+ struct perf_event_context *child_ctx)
{
- struct perf_counter *child_counter;
+ struct perf_event *child_event;
/*
- * Instead of creating recursive hierarchies of counters,
- * we link inherited counters back to the original parent,
+ * Instead of creating recursive hierarchies of events,
+ * we link inherited events back to the original parent,
* which has a filp for sure, which we use as the reference
* count:
*/
- if (parent_counter->parent)
- parent_counter = parent_counter->parent;
+ if (parent_event->parent)
+ parent_event = parent_event->parent;
- child_counter = perf_counter_alloc(&parent_counter->attr,
- parent_counter->cpu, child_ctx,
- group_leader, parent_counter,
+ child_event = perf_event_alloc(&parent_event->attr,
+ parent_event->cpu, child_ctx,
+ group_leader, parent_event,
GFP_KERNEL);
- if (IS_ERR(child_counter))
- return child_counter;
+ if (IS_ERR(child_event))
+ return child_event;
get_ctx(child_ctx);
/*
- * Make the child state follow the state of the parent counter,
+ * Make the child state follow the state of the parent event,
* not its attr.disabled bit. We hold the parent's mutex,
- * so we won't race with perf_counter_{en, dis}able_family.
+ * so we won't race with perf_event_{en, dis}able_family.
*/
- if (parent_counter->state >= PERF_COUNTER_STATE_INACTIVE)
- child_counter->state = PERF_COUNTER_STATE_INACTIVE;
+ if (parent_event->state >= PERF_EVENT_STATE_INACTIVE)
+ child_event->state = PERF_EVENT_STATE_INACTIVE;
else
- child_counter->state = PERF_COUNTER_STATE_OFF;
+ child_event->state = PERF_EVENT_STATE_OFF;
- if (parent_counter->attr.freq)
- child_counter->hw.sample_period = parent_counter->hw.sample_period;
+ if (parent_event->attr.freq)
+ child_event->hw.sample_period = parent_event->hw.sample_period;
/*
* Link it up in the child's context:
*/
- add_counter_to_ctx(child_counter, child_ctx);
+ add_event_to_ctx(child_event, child_ctx);
/*
* Get a reference to the parent filp - we will fput it
- * when the child counter exits. This is safe to do because
+ * when the child event exits. This is safe to do because
* we are in the parent and we know that the filp still
* exists and has a nonzero count:
*/
- atomic_long_inc(&parent_counter->filp->f_count);
+ atomic_long_inc(&parent_event->filp->f_count);
/*
- * Link this into the parent counter's child list
+ * Link this into the parent event's child list
*/
- WARN_ON_ONCE(parent_counter->ctx->parent_ctx);
- mutex_lock(&parent_counter->child_mutex);
- list_add_tail(&child_counter->child_list, &parent_counter->child_list);
- mutex_unlock(&parent_counter->child_mutex);
+ WARN_ON_ONCE(parent_event->ctx->parent_ctx);
+ mutex_lock(&parent_event->child_mutex);
+ list_add_tail(&child_event->child_list, &parent_event->child_list);
+ mutex_unlock(&parent_event->child_mutex);
- return child_counter;
+ return child_event;
}
-static int inherit_group(struct perf_counter *parent_counter,
+static int inherit_group(struct perf_event *parent_event,
struct task_struct *parent,
- struct perf_counter_context *parent_ctx,
+ struct perf_event_context *parent_ctx,
struct task_struct *child,
- struct perf_counter_context *child_ctx)
+ struct perf_event_context *child_ctx)
{
- struct perf_counter *leader;
- struct perf_counter *sub;
- struct perf_counter *child_ctr;
+ struct perf_event *leader;
+ struct perf_event *sub;
+ struct perf_event *child_ctr;
- leader = inherit_counter(parent_counter, parent, parent_ctx,
+ leader = inherit_event(parent_event, parent, parent_ctx,
child, NULL, child_ctx);
if (IS_ERR(leader))
return PTR_ERR(leader);
- list_for_each_entry(sub, &parent_counter->sibling_list, group_entry) {
- child_ctr = inherit_counter(sub, parent, parent_ctx,
+ list_for_each_entry(sub, &parent_event->sibling_list, group_entry) {
+ child_ctr = inherit_event(sub, parent, parent_ctx,
child, leader, child_ctx);
if (IS_ERR(child_ctr))
return PTR_ERR(child_ctr);
@@ -4552,74 +4552,74 @@ static int inherit_group(struct perf_counter *parent_counter,
return 0;
}
-static void sync_child_counter(struct perf_counter *child_counter,
+static void sync_child_event(struct perf_event *child_event,
struct task_struct *child)
{
- struct perf_counter *parent_counter = child_counter->parent;
+ struct perf_event *parent_event = child_event->parent;
u64 child_val;
- if (child_counter->attr.inherit_stat)
- perf_counter_read_event(child_counter, child);
+ if (child_event->attr.inherit_stat)
+ perf_event_read_event(child_event, child);
- child_val = atomic64_read(&child_counter->count);
+ child_val = atomic64_read(&child_event->count);
/*
* Add back the child's count to the parent's count:
*/
- atomic64_add(child_val, &parent_counter->count);
- atomic64_add(child_counter->total_time_enabled,
- &parent_counter->child_total_time_enabled);
- atomic64_add(child_counter->total_time_running,
- &parent_counter->child_total_time_running);
+ atomic64_add(child_val, &parent_event->count);
+ atomic64_add(child_event->total_time_enabled,
+ &parent_event->child_total_time_enabled);
+ atomic64_add(child_event->total_time_running,
+ &parent_event->child_total_time_running);
/*
- * Remove this counter from the parent's list
+ * Remove this event from the parent's list
*/
- WARN_ON_ONCE(parent_counter->ctx->parent_ctx);
- mutex_lock(&parent_counter->child_mutex);
- list_del_init(&child_counter->child_list);
- mutex_unlock(&parent_counter->child_mutex);
+ WARN_ON_ONCE(parent_event->ctx->parent_ctx);
+ mutex_lock(&parent_event->child_mutex);
+ list_del_init(&child_event->child_list);
+ mutex_unlock(&parent_event->child_mutex);
/*
- * Release the parent counter, if this was the last
+ * Release the parent event, if this was the last
* reference to it.
*/
- fput(parent_counter->filp);
+ fput(parent_event->filp);
}
static void
-__perf_counter_exit_task(struct perf_counter *child_counter,
- struct perf_counter_context *child_ctx,
+__perf_event_exit_task(struct perf_event *child_event,
+ struct perf_event_context *child_ctx,
struct task_struct *child)
{
- struct perf_counter *parent_counter;
+ struct perf_event *parent_event;
- update_counter_times(child_counter);
- perf_counter_remove_from_context(child_counter);
+ update_event_times(child_event);
+ perf_event_remove_from_context(child_event);
- parent_counter = child_counter->parent;
+ parent_event = child_event->parent;
/*
- * It can happen that parent exits first, and has counters
+ * It can happen that parent exits first, and has events
* that are still around due to the child reference. These
- * counters need to be zapped - but otherwise linger.
+ * events need to be zapped - but otherwise linger.
*/
- if (parent_counter) {
- sync_child_counter(child_counter, child);
- free_counter(child_counter);
+ if (parent_event) {
+ sync_child_event(child_event, child);
+ free_event(child_event);
}
}
/*
- * When a child task exits, feed back counter values to parent counters.
+ * When a child task exits, feed back event values to parent events.
*/
-void perf_counter_exit_task(struct task_struct *child)
+void perf_event_exit_task(struct task_struct *child)
{
- struct perf_counter *child_counter, *tmp;
- struct perf_counter_context *child_ctx;
+ struct perf_event *child_event, *tmp;
+ struct perf_event_context *child_ctx;
unsigned long flags;
- if (likely(!child->perf_counter_ctxp)) {
- perf_counter_task(child, NULL, 0);
+ if (likely(!child->perf_event_ctxp)) {
+ perf_event_task(child, NULL, 0);
return;
}
@@ -4630,37 +4630,37 @@ void perf_counter_exit_task(struct task_struct *child)
* scheduled, so we are now safe from rescheduling changing
* our context.
*/
- child_ctx = child->perf_counter_ctxp;
- __perf_counter_task_sched_out(child_ctx);
+ child_ctx = child->perf_event_ctxp;
+ __perf_event_task_sched_out(child_ctx);
/*
* Take the context lock here so that if find_get_context is
- * reading child->perf_counter_ctxp, we wait until it has
+ * reading child->perf_event_ctxp, we wait until it has
* incremented the context's refcount before we do put_ctx below.
*/
spin_lock(&child_ctx->lock);
- child->perf_counter_ctxp = NULL;
+ child->perf_event_ctxp = NULL;
/*
* If this context is a clone; unclone it so it can't get
* swapped to another process while we're removing all
- * the counters from it.
+ * the events from it.
*/
unclone_ctx(child_ctx);
spin_unlock_irqrestore(&child_ctx->lock, flags);
/*
- * Report the task dead after unscheduling the counters so that we
- * won't get any samples after PERF_EVENT_EXIT. We can however still
- * get a few PERF_EVENT_READ events.
+ * Report the task dead after unscheduling the events so that we
+ * won't get any samples after PERF_RECORD_EXIT. We can however still
+ * get a few PERF_RECORD_READ events.
*/
- perf_counter_task(child, child_ctx, 0);
+ perf_event_task(child, child_ctx, 0);
/*
* We can recurse on the same lock type through:
*
- * __perf_counter_exit_task()
- * sync_child_counter()
- * fput(parent_counter->filp)
+ * __perf_event_exit_task()
+ * sync_child_event()
+ * fput(parent_event->filp)
* perf_release()
* mutex_lock(&ctx->mutex)
*
@@ -4669,12 +4669,12 @@ void perf_counter_exit_task(struct task_struct *child)
mutex_lock_nested(&child_ctx->mutex, SINGLE_DEPTH_NESTING);
again:
- list_for_each_entry_safe(child_counter, tmp, &child_ctx->group_list,
+ list_for_each_entry_safe(child_event, tmp, &child_ctx->group_list,
group_entry)
- __perf_counter_exit_task(child_counter, child_ctx, child);
+ __perf_event_exit_task(child_event, child_ctx, child);
/*
- * If the last counter was a group counter, it will have appended all
+ * If the last event was a group event, it will have appended all
* its siblings to the list, but we obtained 'tmp' before that which
* will still point to the list head terminating the iteration.
*/
@@ -4690,30 +4690,30 @@ again:
* free an unexposed, unused context as created by inheritance by
* init_task below, used by fork() in case of fail.
*/
-void perf_counter_free_task(struct task_struct *task)
+void perf_event_free_task(struct task_struct *task)
{
- struct perf_counter_context *ctx = task->perf_counter_ctxp;
- struct perf_counter *counter, *tmp;
+ struct perf_event_context *ctx = task->perf_event_ctxp;
+ struct perf_event *event, *tmp;
if (!ctx)
return;
mutex_lock(&ctx->mutex);
again:
- list_for_each_entry_safe(counter, tmp, &ctx->group_list, group_entry) {
- struct perf_counter *parent = counter->parent;
+ list_for_each_entry_safe(event, tmp, &ctx->group_list, group_entry) {
+ struct perf_event *parent = event->parent;
if (WARN_ON_ONCE(!parent))
continue;
mutex_lock(&parent->child_mutex);
- list_del_init(&counter->child_list);
+ list_del_init(&event->child_list);
mutex_unlock(&parent->child_mutex);
fput(parent->filp);
- list_del_counter(counter, ctx);
- free_counter(counter);
+ list_del_event(event, ctx);
+ free_event(event);
}
if (!list_empty(&ctx->group_list))
@@ -4725,37 +4725,37 @@ again:
}
/*
- * Initialize the perf_counter context in task_struct
+ * Initialize the perf_event context in task_struct
*/
-int perf_counter_init_task(struct task_struct *child)
+int perf_event_init_task(struct task_struct *child)
{
- struct perf_counter_context *child_ctx, *parent_ctx;
- struct perf_counter_context *cloned_ctx;
- struct perf_counter *counter;
+ struct perf_event_context *child_ctx, *parent_ctx;
+ struct perf_event_context *cloned_ctx;
+ struct perf_event *event;
struct task_struct *parent = current;
int inherited_all = 1;
int ret = 0;
- child->perf_counter_ctxp = NULL;
+ child->perf_event_ctxp = NULL;
- mutex_init(&child->perf_counter_mutex);
- INIT_LIST_HEAD(&child->perf_counter_list);
+ mutex_init(&child->perf_event_mutex);
+ INIT_LIST_HEAD(&child->perf_event_list);
- if (likely(!parent->perf_counter_ctxp))
+ if (likely(!parent->perf_event_ctxp))
return 0;
/*
* This is executed from the parent task context, so inherit
- * counters that have been marked for cloning.
+ * events that have been marked for cloning.
* First allocate and initialize a context for the child.
*/
- child_ctx = kmalloc(sizeof(struct perf_counter_context), GFP_KERNEL);
+ child_ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL);
if (!child_ctx)
return -ENOMEM;
- __perf_counter_init_context(child_ctx, child);
- child->perf_counter_ctxp = child_ctx;
+ __perf_event_init_context(child_ctx, child);
+ child->perf_event_ctxp = child_ctx;
get_task_struct(child);
/*
@@ -4781,16 +4781,16 @@ int perf_counter_init_task(struct task_struct *child)
* We dont have to disable NMIs - we are only looking at
* the list, not manipulating it:
*/
- list_for_each_entry_rcu(counter, &parent_ctx->event_list, event_entry) {
- if (counter != counter->group_leader)
+ list_for_each_entry_rcu(event, &parent_ctx->event_list, event_entry) {
+ if (event != event->group_leader)
continue;
- if (!counter->attr.inherit) {
+ if (!event->attr.inherit) {
inherited_all = 0;
continue;
}
- ret = inherit_group(counter, parent, parent_ctx,
+ ret = inherit_group(event, parent, parent_ctx,
child, child_ctx);
if (ret) {
inherited_all = 0;
@@ -4804,7 +4804,7 @@ int perf_counter_init_task(struct task_struct *child)
* context, or of whatever the parent is a clone of.
* Note that if the parent is a clone, it could get
* uncloned at any point, but that doesn't matter
- * because the list of counters and the generation
+ * because the list of events and the generation
* count can't have changed since we took the mutex.
*/
cloned_ctx = rcu_dereference(parent_ctx->parent_ctx);
@@ -4825,41 +4825,41 @@ int perf_counter_init_task(struct task_struct *child)
return ret;
}
-static void __cpuinit perf_counter_init_cpu(int cpu)
+static void __cpuinit perf_event_init_cpu(int cpu)
{
struct perf_cpu_context *cpuctx;
cpuctx = &per_cpu(perf_cpu_context, cpu);
- __perf_counter_init_context(&cpuctx->ctx, NULL);
+ __perf_event_init_context(&cpuctx->ctx, NULL);
spin_lock(&perf_resource_lock);
- cpuctx->max_pertask = perf_max_counters - perf_reserved_percpu;
+ cpuctx->max_pertask = perf_max_events - perf_reserved_percpu;
spin_unlock(&perf_resource_lock);
- hw_perf_counter_setup(cpu);
+ hw_perf_event_setup(cpu);
}
#ifdef CONFIG_HOTPLUG_CPU
-static void __perf_counter_exit_cpu(void *info)
+static void __perf_event_exit_cpu(void *info)
{
struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
- struct perf_counter_context *ctx = &cpuctx->ctx;
- struct perf_counter *counter, *tmp;
+ struct perf_event_context *ctx = &cpuctx->ctx;
+ struct perf_event *event, *tmp;
- list_for_each_entry_safe(counter, tmp, &ctx->group_list, group_entry)
- __perf_counter_remove_from_context(counter);
+ list_for_each_entry_safe(event, tmp, &ctx->group_list, group_entry)
+ __perf_event_remove_from_context(event);
}
-static void perf_counter_exit_cpu(int cpu)
+static void perf_event_exit_cpu(int cpu)
{
struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu);
- struct perf_counter_context *ctx = &cpuctx->ctx;
+ struct perf_event_context *ctx = &cpuctx->ctx;
mutex_lock(&ctx->mutex);
- smp_call_function_single(cpu, __perf_counter_exit_cpu, NULL, 1);
+ smp_call_function_single(cpu, __perf_event_exit_cpu, NULL, 1);
mutex_unlock(&ctx->mutex);
}
#else
-static inline void perf_counter_exit_cpu(int cpu) { }
+static inline void perf_event_exit_cpu(int cpu) { }
#endif
static int __cpuinit
@@ -4871,17 +4871,17 @@ perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu)
case CPU_UP_PREPARE:
case CPU_UP_PREPARE_FROZEN:
- perf_counter_init_cpu(cpu);
+ perf_event_init_cpu(cpu);
break;
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
- hw_perf_counter_setup_online(cpu);
+ hw_perf_event_setup_online(cpu);
break;
case CPU_DOWN_PREPARE:
case CPU_DOWN_PREPARE_FROZEN:
- perf_counter_exit_cpu(cpu);
+ perf_event_exit_cpu(cpu);
break;
default:
@@ -4899,7 +4899,7 @@ static struct notifier_block __cpuinitdata perf_cpu_nb = {
.priority = 20,
};
-void __init perf_counter_init(void)
+void __init perf_event_init(void)
{
perf_cpu_notify(&perf_cpu_nb, (unsigned long)CPU_UP_PREPARE,
(void *)(long)smp_processor_id());
@@ -4925,7 +4925,7 @@ perf_set_reserve_percpu(struct sysdev_class *class,
err = strict_strtoul(buf, 10, &val);
if (err)
return err;
- if (val > perf_max_counters)
+ if (val > perf_max_events)
return -EINVAL;
spin_lock(&perf_resource_lock);
@@ -4933,8 +4933,8 @@ perf_set_reserve_percpu(struct sysdev_class *class,
for_each_online_cpu(cpu) {
cpuctx = &per_cpu(perf_cpu_context, cpu);
spin_lock_irq(&cpuctx->ctx.lock);
- mpt = min(perf_max_counters - cpuctx->ctx.nr_counters,
- perf_max_counters - perf_reserved_percpu);
+ mpt = min(perf_max_events - cpuctx->ctx.nr_events,
+ perf_max_events - perf_reserved_percpu);
cpuctx->max_pertask = mpt;
spin_unlock_irq(&cpuctx->ctx.lock);
}
@@ -4989,12 +4989,12 @@ static struct attribute *perfclass_attrs[] = {
static struct attribute_group perfclass_attr_group = {
.attrs = perfclass_attrs,
- .name = "perf_counters",
+ .name = "perf_events",
};
-static int __init perf_counter_sysfs_init(void)
+static int __init perf_event_sysfs_init(void)
{
return sysfs_create_group(&cpu_sysdev_class.kset.kobj,
&perfclass_attr_group);
}
-device_initcall(perf_counter_sysfs_init);
+device_initcall(perf_event_sysfs_init);