linux-kernel - [PATCH v2 0/7] watchdog/softlockup: Report overall time and some cleanup

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Message-Id: <20210311122130.6788-1-pmladek@suse.com>
Date:   Thu, 11 Mar 2021 13:21:23 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Laurence Oberman <loberman@...hat.com>,
        Vincent Whitchurch <vincent.whitchurch@...s.com>,
        Michal Hocko <mhocko@...e.com>, linux-kernel@...r.kernel.org,
        Petr Mladek <pmladek@...e.com>
Subject: [PATCH v2 0/7] watchdog/softlockup: Report overall time and some cleanup

Resending. The original post is [1].

I dug deep into the softlockup watchdog history when time permitted
this year. And reworked the patchset that fixed timestamps and
cleaned up the code[2].

I split it into very small steps and did even more code clean up.
The result looks quite strightforward and I am pretty confident
with the changes.

[1] v2: https://lore.kernel.org/r/20201210160038.31441-1-pmladek@suse.com
[2] v1: https://lore.kernel.org/r/20191024114928.15377-1-pmladek@suse.com

Petr Mladek (7):
  watchdog: Rename __touch_watchdog() to a better descriptive name
  watchdog: Explicitly update timestamp when reporting softlockup
  watchdog/softlockup: Report the overall time of softlockups
  watchdog/softlockup: Remove logic that tried to prevent repeated
    reports
  watchdog: Fix barriers when printing backtraces from all CPUs
  watchdog: Cleanup handling of false positives
  Test softlockup

 fs/proc/consoles.c |  5 +++
 fs/proc/version.c  |  7 ++++
 kernel/watchdog.c  | 97 ++++++++++++++++++++++++++--------------------
 3 files changed, 66 insertions(+), 43 deletions(-)

-- 
2.26.2