From: Ingo Molnar <mingo@elte.hu>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Adrian Bunk <bunk@kernel.org>,
Parag Warudkar <parag.warudkar@gmail.com>,
"Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: 2.6.24-rc6-git12: Reported regressions from 2.6.23
Date: Sun, 6 Jan 2008 10:45:04 +0100 [thread overview]
Message-ID: <20080106094504.GE26291@elte.hu> (raw)
In-Reply-To: <200801052042.56042.rjw@sisk.pl>
* Rafael J. Wysocki <rjw@sisk.pl> wrote:
> Subject : soft lockup - CPU#1 stuck for 15s! [swapper:0]
> Submitter : "Parag Warudkar" <parag.warudkar@gmail.com>
> Date : 2007-12-07 18:14
> References : http://lkml.org/lkml/2007/12/7/299
> http://bugzilla.kernel.org/show_bug.cgi?id=9525
> Handled-By : "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
> Thomas Gleixner <tglx@linutronix.de>
> Ingo Molnar <mingo@elte.hu>
i think this only occurs with cpuidle, right? drivers/cpuidle/ and
CPU_IDLE is new in 2.6.24 so this appears to be a bug in that code (or a
bug elsewhere triggered by that code), not a regression from v2.6.23.
this commit might also have improved things:
------------>
commit 2bacec8c318ca0418c0ee9ac662ee44207765dd4
Author: Ingo Molnar <mingo@elte.hu>
Date: Tue Dec 18 15:21:13 2007 +0100
sched: touch softlockup watchdog after idling
touch softlockup watchdog after idling.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
<------------
albeit Parag reported actual real, human-noticeable delays in system
behavior and those cannot be false positives.
Ingo
next prev parent reply other threads:[~2008-01-06 9:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-05 19:42 2.6.24-rc6-git12: Reported regressions from 2.6.23 Rafael J. Wysocki
2008-01-05 20:06 ` Alan Cox
2008-01-05 23:39 ` Rafael J. Wysocki
2008-01-05 23:45 ` Mark Lord
2008-01-06 9:55 ` Ingo Molnar
2008-01-06 22:23 ` Arjan van de Ven
2008-01-06 22:36 ` Rafael J. Wysocki
2008-01-06 9:38 ` Ingo Molnar
2008-01-06 12:56 ` Rafael J. Wysocki
2008-01-06 14:24 ` Stefano Brivio
2008-01-06 9:45 ` Ingo Molnar [this message]
2008-01-06 12:57 ` Rafael J. Wysocki
2008-01-06 16:21 ` Parag Warudkar
2008-01-06 19:11 ` Rafael J. Wysocki
2008-01-07 23:21 ` Parag Warudkar
2008-01-07 23:54 ` Rafael J. Wysocki
2008-01-08 0:49 ` Parag Warudkar
2008-01-08 8:02 ` Thomas Gleixner
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