From: Petr Mladek <pmladek@suse.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Cc: Laurence Oberman <loberman@redhat.com>,
Vincent Whitchurch <vincent.whitchurch@axis.com>,
Michal Hocko <mhocko@suse.com>,
linux-kernel@vger.kernel.org, Petr Mladek <pmladek@suse.com>
Subject: [PATCH 0/3] watchdog/softlockup: Report overall time and some cleanup
Date: Thu, 24 Oct 2019 13:49:25 +0200 [thread overview]
Message-ID: <20191024114928.15377-1-pmladek@suse.com> (raw)
This is rework of the softlockup improvements sent as
https://lkml.kernel.org/r/20190819104732.20966-1-pmladek@suse.com
based on feedback from Peter Zijlstra.
+ merged the two patches
+ moved some cleanup changes into separate patches
+ improved the code and commit messages
The main change is in 2nd patch. It fixes the time spent in softlockup.
Original:
[ 168.277520] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [cat:4865]
[ 196.277604] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [cat:4865]
[ 236.277522] watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [cat:4865]
^^^
New:
[ 480.372418] watchdog: BUG: soft lockup - CPU#2 stuck for 26s! [cat:4943]
[ 508.372359] watchdog: BUG: soft lockup - CPU#2 stuck for 52s! [cat:4943]
[ 548.372359] watchdog: BUG: soft lockup - CPU#2 stuck for 89s! [cat:4943]
[ 576.372351] watchdog: BUG: soft lockup - CPU#2 stuck for 115s! [cat:4943]
^^^^^
1st and 3rd patch clean up the code.
Petr Mladek (3):
watchdog/softlockup: Remove obsolete check of last reported task
watchdog/softlockup: Report the overall time of softlockups
watchdog/softlockup: Remove logic that tried to prevent repeated
reports
kernel/watchdog.c | 67 ++++++++++++++++++++++++-------------------------------
1 file changed, 29 insertions(+), 38 deletions(-)
--
2.16.4
next reply other threads:[~2019-10-24 11:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 11:49 Petr Mladek [this message]
2019-10-24 11:49 ` [PATCH 1/3] watchdog/softlockup: Remove obsolete check of last reported task Petr Mladek
2020-01-16 13:55 ` [tip: core/core] " tip-bot2 for Petr Mladek
2019-10-24 11:49 ` [PATCH 2/3] watchdog/softlockup: Report the overall time of softlockups Petr Mladek
2020-01-16 13:39 ` Thomas Gleixner
2020-01-17 10:00 ` Petr Mladek
2019-10-24 11:49 ` [PATCH 3/3] watchdog/softlockup: Remove logic that tried to prevent repeated reports Petr Mladek
2019-11-08 10:13 ` [PATCH 0/3] watchdog/softlockup: Report overall time and some cleanup Petr Mladek
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