函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\memcontrol.c Create Date:2022-07-27 17:43:07
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：memcg_alloc_shrinker_maps

函数原型：static int memcg_alloc_shrinker_maps(struct mem_cgroup *memcg)

返回类型：int

参数：

类型参数名称
struct mem_cgroup *memcg
373  ret等于0
375  如果mem_cgroup_is_root(memcg)则返回:0
378  mutex_lock( & memcg_shrinker_map_mutex)
379  size等于memcg_shrinker_map_size
380  for_each_node(nid)
381  map等于kvzalloc(map的长度 + size, GFP_KERNEL)
382  如果非map则
383  memcg_free_shrinker_maps(memcg)
384  ret等于负ENOMEM
385  退出
387  cu_assign_pointer() - assign to RCU-protected pointer*@p: pointer to assign to*@v: value to assign (publish)* Assigns the specified value to the specified RCU-protected* pointer, ensuring that any concurrent RCU readers will see* any prior initialization(shrinker_map, map)
389  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.
391  返回:ret
调用者
名称描述
mem_cgroup_css_online