函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\watchdog.c Create Date:2022-07-27 12:50:13
Last Modify:2020-03-12 14:18:49 Copyright©Brick
首页 函数Tree
注解内核,赢得工具下载SCCTEnglish

函数名称：The cpumask is the mask of possible cpus that the watchdog can run* on, not the mask of cpus it is actually running on. This allows the* user to specify a mask that will include cpus that have not yet* been brought online, if desired.

函数原型：int proc_watchdog_cpumask(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos)

返回类型：int

参数：

类型参数名称
struct ctl_table *table
intwrite
void __user *buffer
size_t *lenp
loff_t *ppos
769  mutex_lock( & watchdog_mutex)
771  err等于proc_do_large_bitmap - read/write from/to a large bitmap*@table: the sysctl table*@write: %TRUE if this is a write to the sysctl file*@buffer: the user buffer*@lenp: the size of the user buffer*@ppos: file position* The bitmap is stored at table->data and
772  如果非err且write则Propagate any changes to the watchdog threads
775  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.
776  返回:err