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| author | Chengming Zhou <zhouchengming@bytedance.com> | 2022-08-25 19:41:03 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-09-09 12:08:31 +0300 |
| commit | 58d8c2586cedb8a67f6f0dffa5eaed0f89135b39 (patch) | |
| tree | cf0117e07e405e560f6a489692ffc5daba0f47aa /kernel/cgroup | |
| parent | c530a3c716b963625e43aa915e0de6b4d1ce8ad9 (diff) | |
| download | linux-58d8c2586cedb8a67f6f0dffa5eaed0f89135b39.tar.xz | |
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 <zhouchengming@bytedance.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Link: https://lore.kernel.org/r/20220825164111.29534-3-zhouchengming@bytedance.com
Diffstat (limited to 'kernel/cgroup')
| -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; } |