Messages in this thread | | | From | "Bob Picco" <> | Date | Thu, 19 Apr 2007 07:10:26 -0400 | Subject | Re: CFS and suspend2: hang in atomic copy |
| |
Ingo Molnar wrote: [Thu Apr 19 2007, 02:29:36AM EDT] > > * Bob Picco <bob.picco@hp.com> wrote: > > > I had hoped to collect more data with CFS V2. It crashes in > > scale_nice_down for s2ram when attempting to disable_nonboot_cpus. So > > part of traceback looks like (typed by hand with obvious omissions): > > > > scale_nice_down > > update_stats_wait_end - not shown in traceback because inlined > > pick_next_task_fair > > migration_call > > task_rq_lock > > notifier_call_chain > > _cpu_down > > disable_nonboot_cpus > > ok, this looks similar to the jpeg Christian did. Does the patch below > fix the crash for you? > > Ingo > > --- > kernel/sched.c | 2 ++ > 1 file changed, 2 insertions(+) > > Index: linux/kernel/sched.c > =================================================================== > --- linux.orig/kernel/sched.c > +++ linux/kernel/sched.c > @@ -4425,6 +4425,8 @@ static void migrate_dead_tasks(unsigned > struct task_struct *next; > > for (;;) { > + if (!rq->nr_running) > + break; > next = pick_next_task(rq, rq->curr); > if (!next) > break; This patch repairs s2ram issue.
Thanks.
bob - 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/
| |