From: Johannes Weiner <hannes@saeurebad.de>
To: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, Ingo Molnar <mingo@elte.hu>
Subject: [PATCH 3/3] softlockup: fix watchdog task wakeup frequency
Date: Fri, 27 Jun 2008 02:04:48 +0200 [thread overview]
Message-ID: <20080627000805.504878592@saeurebad.de> (raw)
In-Reply-To: <20080627000445.346130358@saeurebad.de>
[-- Attachment #1: softlockup-fix-watchdog-wakeup.patch --]
[-- Type: text/plain, Size: 653 bytes --]
Wake up the watchdog every second instead of every second. If the
current timestamp is bigger than the last touch, we are already (at
least) a second ahead.
Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
---
kernel/softlockup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -108,7 +108,7 @@ void softlockup_tick(void)
now = get_timestamp(this_cpu);
/* Wake up the high-prio watchdog task every second: */
- if (now > (touch_timestamp + 1))
+ if (now > touch_timestamp)
wake_up_process(per_cpu(watchdog_task, this_cpu));
/* Warn about unreasonable delays: */
--
next prev parent reply other threads:[~2008-06-27 0:16 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-27 0:04 [PATCH 0/3] softlockup fixlets Johannes Weiner
2008-06-27 0:04 ` [PATCH 1/3] softlockup: only reset timestamp from NMI code Johannes Weiner
2008-06-27 0:04 ` [PATCH 2/3] softlockup: sanitize print-out limit checks Johannes Weiner
2008-06-27 0:04 ` Johannes Weiner [this message]
2008-06-27 12:03 ` [PATCH 3/3] softlockup: fix watchdog task wakeup frequency Ingo Molnar
2008-06-27 12:33 ` Johannes Weiner
2008-06-27 12:43 ` Ingo Molnar
2008-06-27 13:07 ` Johannes Weiner
2008-06-28 0:45 ` Johannes Weiner
2008-06-30 13:08 ` Ingo Molnar
2008-07-01 5:40 ` Johannes Weiner
2008-07-01 6:11 ` Ingo Molnar
2008-07-01 7:12 ` Johannes Weiner
2008-07-01 7:22 ` Ingo Molnar
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