函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\stop_machine.c Create Date:2022-07-27 12:23:54
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:ry_stop_cpus - try to stop multiple cpus*@cpumask: cpus to stop*@fn: function to execute*@arg: argument to @fn* Identical to stop_cpus() except that it fails with -EAGAIN if* someone else is already using the facility

函数原型:int try_stop_cpus(const struct cpumask *cpumask, cpu_stop_fn_t fn, void *arg)

返回类型:int

参数:

类型参数名称
const struct cpumask *cpumask
cpu_stop_fn_tfn
void *arg
479  如果非mutex_trylock - try to acquire the mutex, without waiting*@lock: the mutex to be acquired* Try to acquire the mutex atomically则返回:负EAGAIN
481  ret等于__stop_cpus(cpumask, fn, arg)
482  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.
483  返回:ret