diff options
| author | Dan Schatzberg <dschatzberg@fb.com> | 2019-05-15 01:41:18 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-15 05:52:48 +0300 |
| commit | df5ba5be7425e1df296d40c5f37a39d98ec666a2 (patch) | |
| tree | 3e499ed248db41188978e6a0474233c8cd7d8f50 /include | |
| parent | 0e94682b73bfa6c44c98af7a26771c9c08c055d5 (diff) | |
| download | linux-df5ba5be7425e1df296d40c5f37a39d98ec666a2.tar.xz | |
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 'include')
| -rw-r--r-- | include/linux/psi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/psi.h b/include/linux/psi.h index af892c290116..7b3de7321219 100644 --- a/include/linux/psi.h +++ b/include/linux/psi.h @@ -12,6 +12,7 @@ struct css_set; #ifdef CONFIG_PSI extern struct static_key_false psi_disabled; +extern struct psi_group psi_system; void psi_init(void); |