函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\cgroup\pids.c Create Date:2022-07-27 12:16:43
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：pids_cancel - uncharge the local pid count*@pids: the pid cgroup state*@num: the number of pids to cancel* This function will WARN if the pid count goes under 0, because such a case is* a bug in the pids controller proper.

函数原型：static void pids_cancel(struct pids_cgroup *pids, int num)

返回类型：void

参数：

类型参数名称
struct pids_cgroup *pids
intnum
101  WARN_ON_ONCE(atomic64_add_negative - add and test if negative*@i: integer value to add*@v: pointer of type atomic64_t* Atomically adds @i to @v and returns true* if the result is negative, or false when* result is greater than or equal to zero.)
调用者
名称描述
pids_unchargepids_uncharge - hierarchically uncharge the pid count*@pids: the pid cgroup state*@num: the number of pids to uncharge
pids_try_chargepids_try_charge - hierarchically try to charge the pid count*@pids: the pid cgroup state*@num: the number of pids to charge* This function follows the set limit. It will fail if the charge would cause* the new value to exceed the hierarchical limit