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 15:29:09
Last Modify:2022-05-23 13:16:41 Copyright©Brick
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函数名称：Simple selection loop. We choose the process with the highest number of* 'points'. In case scan was aborted, oc->chosen is set to -1.

函数原型：static void select_bad_process(struct oom_control *oc)

返回类型：void

参数：

类型参数名称
struct oom_control *oc
367  如果is_memcg_oom(oc)则mem_cgroup_scan_tasks(Memory cgroup in which oom is invoked, or NULL for global oom , oom_evaluate_task, oc)
369  否则
372  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
373  for_each_process(p)
374  如果oom_evaluate_task(p, oc)则退出
376  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
调用者
名称描述
out_of_memory_of_memory - kill the "best" process when we run out of memory*@oc: pointer to struct oom_control* If we run out of memory, we have the choice between either* killing a random task (bad), letting the system crash (worse)