函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\memcontrol.h Create Date:2022-07-27 06:56:26
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：memcg_memory_event_mm

函数原型：static inline void memcg_memory_event_mm(struct mm_struct *mm, enum memcg_memory_event event)

返回类型：void

参数：

类型参数名称
struct mm_struct *mm
enum memcg_memory_eventevent
796  如果mem_cgroup_disabled()则返回
799  _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
800  memcg等于mem_cgroup_from_task(cu_dereference() - fetch RCU-protected pointer for dereferencing*@p: The pointer to read, prior to dereferencing* This is a simple wrapper around rcu_dereference_check().(* "owner" points to a task that is regarded as the canonical * user/owner of this mm. All of the following must be true in * order for it to be changed: * current == mm->owner * current->mm != mm * new_owner->mm == mm * new_owner->alloc_lock is held))
801  如果此条件成立可能性大(为编译器优化)(memcg)则memcg_memory_event(memcg, event)
803  _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
__oom_kill_process