__perf_event_sync_stat

Name:__perf_event_sync_stat

Proto:static void __perf_event_sync_stat(struct perf_event *event, struct perf_event *next_event)

Type:void

Parameter:

Type	Parameter	Name
struct perf_event *	event
struct perf_event *	next_event

3142

If Not inherit_stat Then Return

3152

If state == PERF_EVENT_STATE_ACTIVE Then read(event)

3155

perf_event_update_time(event)

3161

value = local64_read( & count)

3162

value = local64_xchg( & count, value)

3163

local64_set( & count, value)

3165

swap - swap values of @a and @b*@a: first value*@b: second value(total_time_enabled, total_time_enabled)

3166

swap - swap values of @a and @b*@a: first value*@b: second value(total_time_running, total_time_running)

3171

Callers need to ensure there can be no nesting of this function, otherwise* the seqlock logic goes bad. We can not serialize this because the arch* code calls this from NMI context.

3172

Callers need to ensure there can be no nesting of this function, otherwise* the seqlock logic goes bad. We can not serialize this because the arch* code calls this from NMI context.

**Caller**
Name	Describe
perf_event_sync_stat

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