free_event

Name:Used to free events which have a known refcount of 1, such as in error paths* where the event isn't exposed yet and inherited events.

Proto:static void free_event(struct perf_event *event)

Type:void

Parameter:

Type	Parameter	Name
struct perf_event *	event

4644

If WARN(atomic_long_cmpxchg( & refcount, 1, 0) != 1, "unexpected event refcount: %ld; ptr=%p\n", atomic_long_read( & refcount), event) Then

**Caller**
Name	Describe
perf_event_release_kernel	Kill an event dead; while event:refcount will preserve the event* object, it will not preserve its functionality. Once the last 'user'* gives up the object, we'll destroy the thing.
perf_event_create_kernel_counter	perf_event_create_kernel_counter@attr: attributes of the counter to create@cpu: cpu in which the counter is bound*@task: task to profile (NULL for percpu)
perf_event_exit_event
perf_free_event
inherit_event	Inherit an event from parent task to child task.* Returns:* - valid pointer on success* - NULL for orphaned events* - IS_ERR() on error

Function report