On Fri, 2010-12-24 at 17:48 +0100, Mike Galbraith wrote: > On Fri, 2010-12-24 at 16:59 +0100, Peter Zijlstra wrote: > > > So cgroup moves a task without calling cgroup_subsys::attach() which is > > odd, but it does have an ::exit method, sadly it calls that _before_ > > re-assigning the task, which means we have to jump through some hoops. > > Could you do the move in cgroup_exit() in the CONFIG_PREEMPT case? I'm not really comfortable relying on that.. voluntary might just grow a cond_resched() somewhere in the exit path and lead us down the same path, also I think that !preempt smp might have the same race. -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
