perf_output_get

Name:We need to ensure a later event_id doesn't publish a head when a former* event isn't done writing. However since we need to deal with NMIs we* cannot fully serialize things.* We only publish the head (and generate a wakeup) when the outer-most

Proto:static void perf_output_get_handle(struct perf_output_handle *handle)

Type:void

Parameter:

Type	Parameter	Name
struct perf_output_handle *	handle

rb = rb

Even if we don't have any preemption, we need preempt disable/enable* to be barriers, so that we don't have things like get_user/put_user* that can cause faults and scheduling migrate into our preempt-protected* region.()

( * (volatile unsigned int * ) & nested writers )++

wakeup = local_read( & wakeup stamp )

**Caller**
Name	Describe
__perf_output_begin

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