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 17:49:09
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：mem_cgroup_id_get_online

函数原型：static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg)

返回类型：struct mem_cgroup

参数：

类型参数名称
struct mem_cgroup *memcg
6837  当非_inc_not_zero - increment a refcount unless it is 0*@r: the refcount to increment* Similar to atomic_inc_not_zero(), but will saturate at REFCOUNT_SATURATED* and WARN.* Provides no memory ordering, it is assumed the caller has guaranteed the循环
6842  如果WARN_ON_ONCE(memcg == root_mem_cgroup)则
6843  VM_BUG_ON(1)
6844  退出
6846  memcg等于parent_mem_cgroup - find the accounting parent of a memcg*@memcg: memcg whose parent to find* Returns the parent memcg, or NULL if this is the root or the memory* controller is in legacy no-hierarchy mode.
6847  如果非memcg则memcg等于root_mem_cgroup
6850  返回:memcg
调用者
名称描述
mem_cgroup_swapoutmem_cgroup_swapout - transfer a memsw charge to swap*@page: page whose memsw charge to transfer*@entry: swap entry to move the charge to* Transfer the memsw charge of @page to @entry.
mem_cgroup_try_charge_swapmem_cgroup_try_charge_swap - try charging swap space for a page*@page: page being added to swap*@entry: swap entry to charge* Try to charge @page's memcg for the swap space at @entry.* Returns 0 on success, -ENOMEM on failure.