Messages in this thread Patch in this message | | | Date | Sat, 25 Aug 2007 21:01:42 +0200 | From | Ingo Molnar <> | Subject | Re: Problem with CFS V20 and Suspend2/tuxonice |
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* David Rodriguez <livuxman@gmail.com> wrote:
> I'm using 2.6.22.5 with cfs v20.3 and suspend2 2.2.10.2. With that > combination, suspend is not working anymore (with cfs v19 was > working). Stops on suspend in "Suspending tasks" Looking at cfs patch, > I managed to change the migration_thread, adding again the > try_to_freeze() removed in last patch and now the suspend finished, > but resume not work. Of course I don't know why that was removed, and > rewriting it is not a solution, but I want to report it.
could you try the patch below, does it fix this problem?
Ingo
Index: linux-cfs-2.6.22.5.q/kernel/sched.c =================================================================== --- linux-cfs-2.6.22.5.q.orig/kernel/sched.c +++ linux-cfs-2.6.22.5.q/kernel/sched.c @@ -5043,6 +5043,8 @@ static int migration_thread(void *data) struct migration_req *req; struct list_head *head; + try_to_freeze(); + spin_lock_irq(&rq->lock); if (cpu_is_offline(cpu)) { @@ -5399,6 +5401,7 @@ migration_call(struct notifier_block *nf p = kthread_create(migration_thread, hcpu, "migration/%d", cpu); if (IS_ERR(p)) return NOTIFY_BAD; + p->flags |= PF_NOFREEZE; kthread_bind(p, cpu); /* Must be high prio: stop_machine expects to yield to it. */ rq = task_rq_lock(p, &flags); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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