Messages in this thread Patch in this message | | | From | Chengming Zhou <> | Subject | [PATCH 5/9] sched/psi: don't create cgroup PSI files when psi_disabled | Date | Thu, 21 Jul 2022 12:04:35 +0800 |
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commit 3958e2d0c34e ("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: Chengming Zhou <zhouchengming@bytedance.com> --- kernel/cgroup/cgroup.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 1779ccddb734..1424da7ed2c4 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -3700,6 +3700,9 @@ 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; } -- 2.36.1
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