Don Zickus wrote, on 04/05/11 04:38:
On Sat, Apr 30, 2011 at 01:06:07PM +0930, Arthur Marsh wrote:
Yes, with plain 2.6.39-rc5-git2 I had problems with shutting down
and with "BUG: soft lockup - CPU#0 stuck for 63s!" errors.
After adding 'nmi_watchdog=0' I could cleanly shutdown and have not
seen any more "BUG: soft lockup - CPU#0 stuck for 63s!" errors.
I realized nmi_watchdog=0 also disabled the softlockup detector too.
What happens if you apply this patch and run _without_ the nmi_watchdog=0
parameter?
Do you still get soft lockups?
Cheers,
Don
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 140dce7..2527d10 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -421,7 +421,7 @@ static int watchdog_enable(int cpu)
int err = 0;
/* enable the perf event */
- err = watchdog_nmi_enable(cpu);
+ //err = watchdog_nmi_enable(cpu);
/* Regardless of err above, fall through and start softlockup */
When I started the rebuild of 2.6.39-rc5-git4 with your patch a few
minutes ago I found that I'd incorrectly set the CPU type to Pentium-III
rather than Pentium-II.
I'll try 2.6.39-rc5-git4 both with and without this patch, but may not
be able to post results for several hours.
Regards,
Arthur.
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