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| author | Li Zefan <lizf@cn.fujitsu.com> | 2010-09-02 19:42:43 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-03 20:55:24 +0400 |
| commit | 3fb5a991916091a908d53608a5899240039fb51e (patch) | |
| tree | fa8e5855de904daffba92bd177fa57ee85641521 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/SchedGui.py | |
| parent | 323f30b361b2e6febb9065ab4a1a5298acb66ac1 (diff) | |
| download | linux-3fb5a991916091a908d53608a5899240039fb51e.tar.xz | |
cls_cgroup: Fix rcu lockdep warning
Dave reported an rcu lockdep warning on 2.6.35.4 kernel
task->cgroups and task->cgroups->subsys[i] are protected by RCU.
So we avoid accessing invalid pointers here. This might happen,
for example, when you are deref-ing those pointers while someone
move @task from one cgroup to another.
Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/SchedGui.py')
0 files changed, 0 insertions, 0 deletions