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| author |   Oleg Nesterov <oleg@redhat.com> | 2019-10-09 17:02:30 +0200 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2019-10-11 08:39:57 -0700 |
| commit | 937c6b27c73e02cd4114f95f5c37ba2c29fadba1 (patch) | |
| tree | e88382aa1b7c257d8c57c43f46a9298e83d0bcdd /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Merge tag 'xfs-5.4-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux (diff) | |
| download | linux-dev-937c6b27c73e02cd4114f95f5c37ba2c29fadba1.tar.xz linux-dev-937c6b27c73e02cd4114f95f5c37ba2c29fadba1.zip | |
cgroup: freezer: call cgroup_enter_frozen() with preemption disabled in ptrace_stop()
ptrace_stop() does preempt_enable_no_resched() to avoid the preemption,
but after that cgroup_enter_frozen() does spin_lock/unlock and this adds
another preemption point.
Reported-and-tested-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Fixes: 76f969e8948d ("cgroup: cgroup v2 freezer")
Cc: stable@vger.kernel.org # v5.2+
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions