diff options
| author | Chengming Zhou <[email protected]> | 2022-08-26 00:41:03 +0800 |
|---|---|---|
| committer | Peter Zijlstra <[email protected]> | 2022-09-09 11:08:31 +0200 |
| commit | 58d8c2586cedb8a67f6f0dffa5eaed0f89135b39 (patch) | |
| tree | cf0117e07e405e560f6a489692ffc5daba0f47aa | |
| parent | c530a3c716b963625e43aa915e0de6b4d1ce8ad9 (diff) | |
sched/psi: Don't create cgroup PSI files when psi_disabled
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 <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
| -rw-r--r-- | kernel/cgroup/cgroup.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 718a70c01c04..96aefdb064bb 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -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; } |