On Sun, 29 Apr 2007 22:27:44 +0200 "Rafael J. Wysocki" <[email protected]> wrote:
> On Sunday, 29 April 2007 21:51, Dan Kruchinin wrote:
> > Hi all.
> >
> > There is a problem on my macbook core duo with suspend.
> > after suspending when i'm trying to 'wake up' my notebook, it seems
> > that it works, but i don't see anything at my monitor. So i have to
> > reboot it to continue my work.
>
> What exactly do you do to suspend?
>
This is due to _cpu_down() calling kthread_bind() in state TASK_RUNNING.
So I was sent the below, including worrisome changelog.
From: Gautham R Shenoy <[email protected]>
We are anyway kthread_stop()ping other per-cpu kernel threads after
move_task_off_dead_cpu(), so we can do it with the stop_machine_run thread
as well.
I just checked with Vatsa if there was any subtle reason why they
had put in the kthread_bind() in cpu.c. Vatsa cannot seem to recollect
any and I can't see any. So let us just remove the kthread_bind.
Signed-off-by: Gautham R Shenoy <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
kernel/cpu.c | 4 ----
1 files changed, 4 deletions(-)
diff -puN kernel/cpu.c~remvoe-kthread_bind-call-from-_cpu_down kernel/cpu.c
--- a/kernel/cpu.c~remvoe-kthread_bind-call-from-_cpu_down
+++ a/kernel/cpu.c
@@ -175,10 +175,6 @@ static int _cpu_down(unsigned int cpu)
/* This actually kills the CPU. */
__cpu_die(cpu);
- /* Move it here so it can run. */
- kthread_bind(p, get_cpu());
- put_cpu();
-
/* CPU is completely dead: tell everyone. Too late to complain. */
if (raw_notifier_call_chain(&cpu_chain, CPU_DEAD, hcpu) == NOTIFY_BAD)
BUG();
_
-
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