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@@ -3267,15 +3267,10 @@ static void perf_event_task_ctx(struct perf_event_context *ctx,
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{
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struct perf_event *event;
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- if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
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- return;
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-
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- rcu_read_lock();
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list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
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if (perf_event_task_match(event))
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perf_event_task_output(event, task_event);
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}
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- rcu_read_unlock();
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}
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static void perf_event_task_event(struct perf_task_event *task_event)
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@@ -3283,11 +3278,11 @@ static void perf_event_task_event(struct perf_task_event *task_event)
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struct perf_cpu_context *cpuctx;
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struct perf_event_context *ctx = task_event->task_ctx;
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+ rcu_read_lock();
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cpuctx = &get_cpu_var(perf_cpu_context);
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perf_event_task_ctx(&cpuctx->ctx, task_event);
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put_cpu_var(perf_cpu_context);
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- rcu_read_lock();
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if (!ctx)
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ctx = rcu_dereference(task_event->task->perf_event_ctxp);
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if (ctx)
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