On Thursday, 31 May 2007 21:58, Rafael J. Wysocki wrote:
> On Thursday, 31 May 2007 17:29, Michal Piotrowski wrote:
> > Hi,
> >
> > Andrew Morton napisał(a):
> > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc3/2.6.22-rc3-mm1/
> > >
> >
> > FYI suspend to disk doesn't work anymore on my box, system hangs after "Suspending console(s)" message.
> >
> > [ 186.297753] Shrinking memory... -\|/-\|done (113064 pages freed)
> > [ 187.841914] Freed 452256 kbytes in 1.54 seconds (293.67 MB/s)
> > [ 187.847730] Suspending console(s)
> >
> > http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.22-rc3-mm1/console.log
> > http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.22-rc3-mm1/mm-config
>
> Hmm, that might be a couple of things, actually.
>
> To see if the patches directly related to hibernation/suspend cause this, can
> you please test 2.6.22-rc3 with the patch series at
>
> http://www.sisk.pl/kernel/hibernation_and_suspend/2.6.22-rc3/patches/
>
> applied?
Ahem, I broke it. :-(
Andrew, the following fix is needed on top of
freezer-make-kernel-threads-nonfreezable-by-default.patch
---
From: Rafael J. Wysocki <[email protected]>
migration_thread should not be freezable, or it will break hibernation and
suspend on SMP.
Signed-off-by: Rafael J. Wysocki <[email protected]>
---
kernel/sched.c | 3 ---
1 file changed, 3 deletions(-)
Index: linux-2.6.22-rc3/kernel/sched.c
===================================================================
--- linux-2.6.22-rc3.orig/kernel/sched.c
+++ linux-2.6.22-rc3/kernel/sched.c
@@ -5157,13 +5157,10 @@ static int migration_thread(void *data)
BUG_ON(rq->migration_thread != current);
set_current_state(TASK_INTERRUPTIBLE);
- set_freezable();
while (!kthread_should_stop()) {
struct migration_req *req;
struct list_head *head;
- try_to_freeze();
-
spin_lock_irq(&rq->lock);
if (cpu_is_offline(cpu)) {
-
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