Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\stop_machine.c Create Date:2022-07-28 11:21:06
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name: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

Proto:int try_stop_cpus(const struct cpumask *cpumask, cpu_stop_fn_t fn, void *arg)

Type:int

Parameter:

TypeParameterName
const struct cpumask *cpumask
cpu_stop_fn_tfn
void *arg
479  If Not mutex_trylock - try to acquire the mutex, without waiting*@lock: the mutex to be acquired* Try to acquire the mutex atomically Then Return -EAGAIN
481  ret = __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  Return ret