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 15:02:28
Last Modify:2022-05-20 07:50:19 Copyright©Brick
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函数名称：perf_event_init_cpu

函数原型：int perf_event_init_cpu(unsigned int cpu)

返回类型：int

参数：

类型参数名称
unsigned intcpu
12458  perf_swevent_init_cpu(cpu)
12460  mutex_lock( & pmus_lock)
12461  设置CPU信息
12463  cpuctx等于per_cpu_ptr(pmu_cpu_context, cpu)
12464  ctx等于ctx
12466  mutex_lock( & Protect the list of events. Locking either mutex or lock* is sufficient to ensure the list doesn't change; to change* the list you need to lock both the mutex and the spinlock.)
12467  online等于1
12468  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.
12470  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.
12472  返回:0
调用者
名称描述
perf_event_init