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| author | Lucas Stach <l.stach@pengutronix.de> | 2017-11-28 13:59:25 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2017-11-28 16:16:08 +0100 |
| commit | 52cf373c37a684f8fc279d541307fad39d206376 (patch) | |
| tree | 27b35f9e9d446388dd018f583f8bf080774875f3 /kernel/cgroup | |
| parent | debug cgroup: use task_css_set instead of rcu_dereference (diff) | |
| download | linux-52cf373c37a684f8fc279d541307fad39d206376.tar.xz linux-52cf373c37a684f8fc279d541307fad39d206376.zip | |
cgroup: properly init u64_stats
Lockdep complains that the stats update is trying to register a non-static
key. This is because u64_stats are using a seqlock on 32bit arches, which
needs to be initialized before usage.
Fixes: 041cd640b2f3 (cgroup: Implement cgroup2 basic CPU usage accounting)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/cgroup')
| -rw-r--r-- | kernel/cgroup/stat.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/cgroup/stat.c b/kernel/cgroup/stat.c index 133b465691d6..1e111dd455c4 100644 --- a/kernel/cgroup/stat.c +++ b/kernel/cgroup/stat.c @@ -296,8 +296,12 @@ int cgroup_stat_init(struct cgroup *cgrp) } /* ->updated_children list is self terminated */ - for_each_possible_cpu(cpu) - cgroup_cpu_stat(cgrp, cpu)->updated_children = cgrp; + for_each_possible_cpu(cpu) { + struct cgroup_cpu_stat *cstat = cgroup_cpu_stat(cgrp, cpu); + + cstat->updated_children = cgrp; + u64_stats_init(&cstat->sync); + } prev_cputime_init(&cgrp->stat.prev_cputime); |