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| author |   Dan Schatzberg <dschatzberg@fb.com> | 2019-05-14 15:41:18 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 19:52:48 -0700 |
| commit | df5ba5be7425e1df296d40c5f37a39d98ec666a2 (patch) | |
| tree | 3e499ed248db41188978e6a0474233c8cd7d8f50 /kernel/sched | |
| parent | psi: introduce psi monitor (diff) | |
| download | linux-dev-df5ba5be7425e1df296d40c5f37a39d98ec666a2.tar.xz linux-dev-df5ba5be7425e1df296d40c5f37a39d98ec666a2.zip | |
kernel/sched/psi.c: expose pressure metrics on root cgroup
Pressure metrics are already recorded and exposed in procfs for the
entire system, but any tool which monitors cgroup pressure has to
special case the root cgroup to read from procfs. This patch exposes
the already recorded pressure metrics on the root cgroup.
Link: http://lkml.kernel.org/r/20190510174938.3361741-1-dschatzberg@fb.com
Signed-off-by: Dan Schatzberg <dschatzberg@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/psi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched/psi.c b/kernel/sched/psi.c index e88918e0bb6d..7acc632c3b82 100644 --- a/kernel/sched/psi.c +++ b/kernel/sched/psi.c @@ -173,7 +173,7 @@ static u64 psi_period __read_mostly; /* System-level pressure and stall tracking */ static DEFINE_PER_CPU(struct psi_group_cpu, system_group_pcpu); -static struct psi_group psi_system = { +struct psi_group psi_system = { .pcpu = &system_group_pcpu, }; |