diff options
| author | Josh Don | 2023-03-15 14:40:29 -0700 |
|---|---|---|
| committer | Tejun Heo | 2023-03-17 12:19:15 -1000 |
| commit | fcdb1eda5302599045bb366e679cccb4216f3873 (patch) | |
| tree | db8f154b993c6f51a90eb649af55435bf9b373c4 | |
| parent | 8d3c682a5e3d9dfc2448ecbb22f4cd48359b9e21 (diff) | |
cgroup: fix display of forceidle time at root
We need to reset forceidle_sum to 0 when reading from root, since the
bstat we accumulate into is stack allocated.
To make this more robust, just replace the existing cputime reset with a
memset of the overall bstat.
Signed-off-by: Josh Don <joshdon@google.com>
Fixes: 1fcf54deb767 ("sched/core: add forced idle accounting for cgroups")
Cc: stable@vger.kernel.org # v6.0+
Signed-off-by: Tejun Heo <tj@kernel.org>
| -rw-r--r-- | kernel/cgroup/rstat.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/cgroup/rstat.c b/kernel/cgroup/rstat.c index 831f1f472bb8..0a2b4967e333 100644 --- a/kernel/cgroup/rstat.c +++ b/kernel/cgroup/rstat.c @@ -457,9 +457,7 @@ static void root_cgroup_cputime(struct cgroup_base_stat *bstat) struct task_cputime *cputime = &bstat->cputime; int i; - cputime->stime = 0; - cputime->utime = 0; - cputime->sum_exec_runtime = 0; + memset(bstat, 0, sizeof(*bstat)); for_each_possible_cpu(i) { struct kernel_cpustat kcpustat; u64 *cpustat = kcpustat.cpustat; |