Commit 58d8c258 authored by Chengming Zhou's avatar Chengming Zhou Committed by Peter Zijlstra
Browse files

sched/psi: Don't create cgroup PSI files when psi_disabled 



commit 3958e2d0 ("cgroup: make per-cgroup pressure stall tracking configurable")
make PSI can be configured to skip per-cgroup stall accounting. And
doesn't expose PSI files in cgroup hierarchy.

This patch do the same thing when psi_disabled.

Signed-off-by: default avatarChengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Link: https://lore.kernel.org/r/20220825164111.29534-3-zhouchengming@bytedance.com
parent c530a3c7

kernel/cgroup/cgroup.c

+3 −0
Original line number Diff line number Diff line
@@ -3780,6 +3780,9 @@ static void cgroup_pressure_release(struct kernfs_open_file *of) 


bool cgroup_psi_enabled(void)

{

	if (static_branch_likely(&psi_disabled))

		return false;



	return (cgroup_feature_disable_mask & (1 << OPT_FEATURE_PRESSURE)) == 0;

}