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Red Hat Bugzilla – Attachment 685792 Details for
Bug 903141
Regression: Kernel 3.7.x breaks suspend/hibernation
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[patch]
Patch to fix watchdog/NMI to resolve the problem
linux-3.7-watchdog-fix.patch (text/plain), 933 bytes, created by
Matthias Hensler
on 2013-01-23 10:10:03 UTC
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Description:
Patch to fix watchdog/NMI to resolve the problem
Filename:
MIME Type:
Creator:
Matthias Hensler
Created:
2013-01-23 10:10:03 UTC
Size:
933 bytes
patch
obsolete
>http://thread.gmane.org/gmane.linux.kernel/1397985 > >From: Thomas Gleixner <tglx <at> linutronix.de> >Subject: Re: [regression] 3.7+ suspend to RAM/offline CPU fails with nmi_watchdog=0 (bisected) >Newsgroups: gmane.linux.kernel >Date: 2012-11-23 09:33:54 GMT (8 weeks, 4 days, 1 hour and 44 minutes ago) > >On Wed, 21 Nov 2012, Norbert Warmuth wrote: >> 3.7-rc6 booted with nmi_watchdog=0 fails to suspend to RAM or >> offline CPUs. It's reproducable with a KVM guest and physical >> system. > >Does the patch below fix it? > >Thanks, > > tglx > >diff --git a/kernel/watchdog.c b/kernel/watchdog.c >index 9d4c8d5..e3ef521 100644 >--- a/kernel/watchdog.c >+++ b/kernel/watchdog.c >@@ -368,6 +368,9 @@ static void watchdog_disable(unsigned int cpu) > { > struct hrtimer *hrtimer = &__raw_get_cpu_var(watchdog_hrtimer); > >+ if (!watchdog_enabled) >+ return; >+ > watchdog_set_prio(SCHED_NORMAL, 0); > hrtimer_cancel(hrtimer); > /* disable the perf event */ >
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