函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\oom_kill.c Create Date:2022-07-27 15:29:32
Last Modify:2022-05-23 13:16:41 Copyright©Brick
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函数名称：m_killer_disable - disable OOM killer*@timeout: maximum timeout to wait for oom victims in jiffies* Forces all page allocations to fail rather than trigger OOM killer

函数原型：bool oom_killer_disable(signed long timeout)

返回类型：bool

参数：

类型参数名称
signed longtimeout
765  如果mutex_lock_killable( & Serializes oom killer invocations (out_of_memory()) from all contexts to* prevent from over eager oom killing (e)则返回:false
767  oom_killer_disabled = true
768  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.
770  ret等于wait_event_interruptible_timeout - sleep until a condition gets true or a timeout elapses*@wq_head: the waitqueue to wait on*@condition: a C expression for the event to wait for*@timeout: timeout, in jiffies* The process is put to sleep (oom_victims_wait, !atomic_read( & Number of OOM victims in flight), timeout)
772  如果ret小于等于0则
773  m_killer_enable - enable OOM killer
774  返回:false
776  打印信息("OOM killer disabled.\n")
778  返回:true
调用者
名称描述
freeze_processesze_processes - Signal user space processes to enter the refrigerator.* The current thread will not be frozen. The same process that calls* freeze_processes must later call thaw_processes.* On success, returns 0