perf_ctx_lock

Name:perf_ctx_lock

Proto:static void perf_ctx_lock(struct perf_cpu_context *cpuctx, struct perf_event_context *ctx)

Type:void

Parameter:

Type	Parameter	Name
struct perf_cpu_context *	cpuctx
struct perf_event_context *	ctx

154

raw_spin_lock( & Protect the states of the events in the list,* nr_active, and the list:)

155

If ctx Then raw_spin_lock( & Protect the states of the events in the list,* nr_active, and the list:)

**Caller**
Name	Describe
event_function
event_function_local	Similar to event_function_call() + event_function(), but hard assumes IRQs* are already disabled and we're on the right CPU.
perf_pmu_resched
perf_pmu_sched_task	This function provides the context switch callback to the lower code* layer. It is invoked ONLY when the context switch callback is enabled.* This callback is relevant even to per-cpu events; for example multi event
perf_event_context_sched_in
perf_rotate_context
perf_event_enable_on_exec	Enable all of a task's events that have been marked enable-on-exec.* This expects task == current.

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