psi: dont alloc memory for psi by default

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Memory about struct psi_group is allocated by default for
each cgroup even if psi_disabled is true, in this case, these
allocated memory is waste, so alloc memory for struct psi_group
only when psi_disabled is false.

Signed-off-by: Chen Wandun <chenwandun@huawei.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Chen Wandun 2022-05-26 20:26:56 +08:00 • committed by Tejun Heo

parent e71e60cd74

commit 5f69a6577b

4 changed files with 19 additions and 12 deletions

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2

include/linux/cgroup-defs.h

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2

include/linux/cgroup.h

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8

kernel/cgroup/cgroup.c

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19

kernel/sched/psi.c

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