Hey, Li.

On Wed, Dec 26, 2012 at 06:51:02PM +0800, Li Zefan wrote:

I created a cpuset which has cpuset.cpus=1, and I forked a few cpu-hog tasks
and moved them to this cpuset, and the final operations was offlining cpu1.
It stucked.

This was caused by not rebuilding sched domains synchronously from cpu
offline path.  I looks like scheduler got confused and put tasks on
the dead cpu.  Should be okay in the updated patchset.  Can you please
test / review that one?

Thanks.

-- 
tejun