mm, memcg: introduce mem_cgroup_kmem_disabled()

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Introduce a new mem_cgroup_kmem_disabled() helper, similar to
mem_cgroup_disabled(), to check whether the kernel memory accounting
is off. A user could disable it using a boot option to eliminate
some associated costs.

The helper can be used outside of memcontrol.c to dynamically disable
the kmem-related code. The returned value is stable after the kernel
initialization is finished.

Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Dennis Zhou <dennis@kernel.org>

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Roman Gushchin 2021-06-02 18:09:30 -07:00 • committed by Dennis Zhou

parent 0f0cace35f

commit 4d5c8aedc8

2 changed files with 10 additions and 0 deletions

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include/linux/memcontrol.h

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