Roman Gushchin 4d5c8aedc8
mm, memcg: introduce mem_cgroup_kmem_disabled() ...
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
4d5c8aedc8