perf_event_for_each

Name:Holding the top-level event's child_mutex means that any* descendant process that has inherited this event will block* in perf_event_exit_event() if it goes to exit, thus satisfying the* task existence requirements of perf_event_enable/disable.

Proto:static void perf_event_for_each_child(struct perf_event *event, void (*func)(struct perf_event *))

Type:void

Parameter:

Type	Parameter	Name
struct perf_event *	event
void (*	func

5114

WARN_ON_ONCE(parent_ctx)

5116

mutex_lock( & child_mutex)

5117

func(event)

5118

list_for_each_entry - iterate over list of given type*@pos: the type * to use as a loop cursor.*@head: the head for your list.*@member: the name of the list_head within the struct.(child, & child_list, child_list)

5119

func(child)

5120

mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.

**Caller**
Name	Describe
perf_event_for_each
_perf_ioctl
perf_event_task_enable
perf_event_task_disable
perf_event_set_addr_filter

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion

Function report