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mm: memcontrol: allow to disable kmem accounting for cgroup2

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Kmem accounting might incur overhead that some users can't put up with.
Besides, the implementation is still considered unstable.  So let's
provide a way to disable it for those users who aren't happy with it.

To disable kmem accounting for cgroup2, pass cgroup.memory=nokmem at
boot time.

Signed-off-by: Vladimir Davydov <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Vladimir Davydov 2016-01-20 15:02:38 -08:00 • committed by Linus Torvalds
commit 04823c833b
2 changed files with 8 additions and 2 deletions
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1
Documentation/kernel-parameters.txt
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@ -611,6 +611,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
cgroup.memory= [KNL] Pass options to the cgroup memory controller.
Format: <string>
nosocket -- Disable socket memory accounting.
nokmem -- Disable kernel memory accounting.
checkreqprot [SELINUX] Set initial checkreqprot flag value.
Format: { "0" | "1" }