函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\umh.c Create Date:2022-07-27 10:22:42
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Handles UMH_WAIT_PROC.

函数原型：static void call_usermodehelper_exec_sync(struct subprocess_info *sub_info)

返回类型：void

参数：

类型参数名称
struct subprocess_info *sub_info
134  内核信号处理
135  pid等于创建内核线程
136  如果pid小于0则
137  retval等于pid
138  否则
139  ret等于负ECHILD
150  kernel_wait4(pid, (int__user * ) & ret, 0, NULL)
157  如果ret则retval等于ret
162  内核信号处理
164  umh_complete(sub_info)
调用者
名称描述
call_usermodehelper_exec_workWe need to create the usermodehelper kernel thread from a task that is affine* to an optimized set of CPUs (or nohz housekeeping ones) such that they* inherit a widest affinity irrespective of call_usermodehelper() callers with