函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\events\core.c Create Date:2022-07-27 14:51:44
Last Modify:2022-05-20 07:50:19 Copyright©Brick
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函数名称：Cross CPU call to disable a performance event

函数原型：static void __perf_event_disable(struct perf_event *event, struct perf_cpu_context *cpuctx, struct perf_event_context *ctx, void *info)

返回类型：void

参数：

类型参数名称
struct perf_event *event
struct perf_cpu_context *cpuctx
struct perf_event_context *ctx
void *info
2237  如果state小于PERF_EVENT_STATE_INACTIVE则返回
2240  如果is_active按位与EVENT_TIME则
2241  update_context_time(ctx)
2242  update_cgrp_time_from_event(event)
2245  如果event恒等于group_leader则group_sched_out(event, cpuctx, ctx)
2247  否则event_sched_out(event, cpuctx, ctx)
2250  perf_event_set_state(event, PERF_EVENT_STATE_OFF)