Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [Suspend2-devel] Problem with CFS V20 and Suspend2/tuxonice | Date | Mon, 27 Aug 2007 14:25:47 +0200 |
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On Monday, 27 August 2007 13:41, Pavel Machek wrote: > Hi! > > > > > Same problem here: Core Duo, Kernel 2.6.22.5, Suspend 2.2.10, CFS > > > > v20.2. > > > > > > Me too for 2.6.22.5, TuxOnIce 2.2.10 and Centrino based notebook. > > > > possible bugfix below. > > > > 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)) { > > If it is NONFREEZE, you should not be trying to freeze it. > > > @@ -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); > > ...plus I believe are tasks are nonfreezable by default now...? Or is > that only in 2.6.23?
Yes, only in 2.6.23-rc.
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