Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\events\core.c Create Date:2022-07-28 13:33:46
Last Modify:2022-05-20 07:50:19 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:Called from scheduler to add the events of the current task* with interrupts disabled.* We restore the event value and then enable it.* This does not protect us against NMI, but enable()* sets the enabled bit in the control field of event _before_

Proto:void __perf_event_task_sched_in(struct task_struct *prev, struct task_struct *task)

Type:void

Parameter:

TypeParameterName
struct task_struct *prev
struct task_struct *task
3617  If atomic_read(this_cpu_ptr( & perf_cgroup_events)) Then perf_cgroup_sched_in(prev, task)
3621  ctx = perf_event_ctxp[ctxn]
3622  If Value is more likely to compile time(!ctx) Then Continue
3625  perf_event_context_sched_in(ctx, task)
3628  If atomic_read( & nr_switch_events) Then perf_event_switch(task, prev, true)
3631  If Operations for contexts that are safe from preemption/interrupts. These* operations verify that preemption is disabled.(perf_sched_cb_usages) Then 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