diff options
Diffstat (limited to '')
| -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(¤t->perf_counter_mutex); - list_for_each_entry(counter, ¤t->perf_counter_list, owner_entry) - perf_counter_for_each_child(counter, perf_counter_enable); - mutex_unlock(¤t->perf_counter_mutex); + mutex_lock(¤t->perf_event_mutex); + list_for_each_entry(event, ¤t->perf_event_list, owner_entry) + perf_event_for_each_child(event, perf_event_enable); + mutex_unlock(¤t->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(¤t->perf_counter_mutex); - list_for_each_entry(counter, ¤t->perf_counter_list, owner_entry) - perf_counter_for_each_child(counter, perf_counter_disable); - mutex_unlock(¤t->perf_counter_mutex); + mutex_lock(¤t->perf_event_mutex); + list_for_each_entry(event, ¤t->perf_event_list, owner_entry) + perf_event_for_each_child(event, perf_event_disable); + mutex_unlock(¤t->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(¤t->perf_counter_mutex); - list_add_tail(&counter->owner_entry, ¤t->perf_counter_list); - mutex_unlock(¤t->perf_counter_mutex); + mutex_lock(¤t->perf_event_mutex); + list_add_tail(&event->owner_entry, ¤t->perf_event_list); + mutex_unlock(¤t->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); |