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 12:23:53
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：__stop_cpus

函数原型：static int __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
410  cpu_stop_init_done( & done, pumask_weight - Count of bits in *srcp*@srcp: the cpumask to count bits (< nr_cpu_ids) in.)
411  如果非queue_stop_cpus_work(cpumask, fn, arg, & done)则返回:负ENOENT
413  wait_for_completion: - waits for completion of a task*@x: holds the state of this particular completion* This waits to be signaled for completion of a specific task. It is NOT* interruptible and there is no timeout.* See also similar routines (i
414  返回:collected return value
调用者
名称描述
stop_cpusstop_cpus - stop multiple cpus*@cpumask: cpus to stop*@fn: function to execute*@arg: argument to @fn* Execute @fn(@arg) on online cpus in @cpumask. On each target cpu,*@fn is run in a process context with the highest priority
try_stop_cpusry_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