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 17:43:04
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：memcg_free_shrinker_maps

函数原型：static void memcg_free_shrinker_maps(struct mem_cgroup *memcg)

返回类型：void

参数：

类型参数名称
struct mem_cgroup *memcg
358  如果mem_cgroup_is_root(memcg)则返回
361  for_each_node(nid)
362  pn等于mem_cgroup_nodeinfo(memcg, nid)
363  map等于cu_dereference_protected() - fetch RCU pointer when updates prevented*@p: The pointer to read, prior to dereferencing*@c: The conditions under which the dereference will take place* Return the value of the specified RCU-protected pointer, but omit(shrinker_map, true)
364  如果map则kvfree() - Free memory.*@addr: Pointer to allocated memory.* kvfree frees memory allocated by any of vmalloc(), kmalloc() or kvmalloc().* It is slightly more efficient to use kfree() or vfree() if you are certain* that you know which one to use.
366  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, NULL)
调用者
名称描述
memcg_alloc_shrinker_maps
mem_cgroup_css_free