From df5ba5be7425e1df296d40c5f37a39d98ec666a2 Mon Sep 17 00:00:00 2001 From: Dan Schatzberg Date: Tue, 14 May 2019 15:41:18 -0700 Subject: 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 Acked-by: Johannes Weiner Cc: Tejun Heo Cc: Li Zefan Cc: Ingo Molnar Cc: Peter Zijlstra Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/sched/psi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/sched') 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, }; -- cgit v1.2.3