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| author | Mandeep Singh Baines <msb@chromium.org> | 2012-01-04 06:18:31 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2012-01-21 00:58:13 +0100 |
| commit | fb5d2b4cfc24963d0e8a7df57de1ecffa10a04cf (patch) | |
| tree | 4603496bbe19740067195bf0669f7be484dbc950 /kernel/profile.c | |
| parent | cgroup: simplify double-check locking in cgroup_attach_proc (diff) | |
| download | linux-fb5d2b4cfc24963d0e8a7df57de1ecffa10a04cf.tar.xz linux-fb5d2b4cfc24963d0e8a7df57de1ecffa10a04cf.zip | |
cgroup: replace tasklist_lock with rcu_read_lock
We can replace the tasklist_lock in cgroup_attach_proc with an
rcu_read_lock().
Changes in V4:
* https://lkml.org/lkml/2011/12/23/284 (Frederic Weisbecker)
* Minimize size of rcu_read_lock critical section
* Add comment
* https://lkml.org/lkml/2011/12/26/136 (Li Zefan)
* Split into two patches
Changes in V3:
* https://lkml.org/lkml/2011/12/22/419 (Frederic Weisbecker)
* Add an rcu_read_lock to protect against exit
Changes in V2:
* https://lkml.org/lkml/2011/12/22/86 (Tejun Heo)
* Use a goto instead of returning -EAGAIN
Suggested-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: containers@lists.linux-foundation.org
Cc: cgroups@vger.kernel.org
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Paul Menage <paul@paulmenage.org>
Diffstat (limited to 'kernel/profile.c')
0 files changed, 0 insertions, 0 deletions