lkml.org 
[lkml]   [2011]   [Sep]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
SubjectRe: [patch] cpusets: allow PF_THREAD_BOUND kworkers to escape from a cpuset
From
Date
On Fri, 2011-09-23 at 15:00 +0800, Li Zefan wrote:

> To make the code more self-explanatory, I think this is a bit better:
>
> if (... && cont != cont->top_cgroup)
>

Done, your ACK added as well.

kworkers can be born in a cpuset, leaving them adrift on an unsinkable ship.
Allow them to be moved to the root cpuset so the cpuset can be destroyed.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Li Zefan <lizf@cn.fujitsu.com>

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 10131fd..b26f4c4 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1384,7 +1384,7 @@ static int cpuset_can_attach(struct cgroup_subsys *ss, struct cgroup *cont,
* set_cpus_allowed_ptr() on all attached tasks before cpus_allowed may
* be changed.
*/
- if (tsk->flags & PF_THREAD_BOUND)
+ if (tsk->flags & PF_THREAD_BOUND && cont != cont->top_cgroup)
return -EINVAL;

return 0;



\
 
 \ /
  Last update: 2011-09-23 09:21    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site