linux-kernel - Re: [PATCH] watchdog: Fix race on single cpu boot

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Message-ID: <366054547.2544162.1438513753610.JavaMail.zimbra@redhat.com>
Date:	Sun, 2 Aug 2015 07:09:13 -0400 (EDT)
From:	Ulrich Obergfell <uobergfe@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Don Zickus <dzickus@...hat.com>, Jiri Olsa <jolsa@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>, Michal Hocko <mhocko@...e.cz>,
	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Paul Bunyan <pbunyan@...hat.com>
Subject: Re: [PATCH] watchdog: Fix race on single cpu boot


Peter,

>> I posted the patch set here:
>> 
>>   https://lkml.org/lkml/2015/8/1/64
>>   https://lkml.org/lkml/2015/8/1/65
>>   https://lkml.org/lkml/2015/8/1/66
>>   https://lkml.org/lkml/2015/8/1/67
>>   https://lkml.org/lkml/2015/8/1/68
>
> If only you didn't use lkml.org links, that site is flaky beyond
> unusable.
>
> Please use lkml.kernel.org/r/$msgid, that way people actually have a
> chance of getting a working link and/or finding it in their local
> archive.

I apologize for the inconvenience. The following links redirect to marc.info:

- [PATCH 0/4] watchdog: avoid races in watchdog_nmi_{en|disable} functions
  lkml.kernel.org/r/1438433365-2979-1-git-send-email-uobergfe@...hat.com

- [PATCH 1/4] watchdog: introduce watchdog_park_threads() and watchdog_unpark_threads()
  lkml.kernel.org/r/1438433365-2979-2-git-send-email-uobergfe@...hat.com

- [PATCH 2/4] watchdog: introduce watchdog_suspend() and watchdog_resume()
  lkml.kernel.org/r/1438433365-2979-3-git-send-email-uobergfe@...hat.com

  This part of the series has already received a comment. The suggestion is
  to introduce different function names to avoid confusion with the watchdog
  subsystem, so I propose

    lockup_detector_suspend() instead of watchdog_suspend()
    lockup_detector_resume()  instead of watchdog_resume()

  which would be consistent with the existing name lockup_detector_init().

- [PATCH 3/4] watchdog: use park/unpark functions in update_watchdog_all_cpus()
  lkml.kernel.org/r/1438433365-2979-4-git-send-email-uobergfe@...hat.com

- [PATCH 4/4] watchdog: use suspend/resume interface in fixup_ht_bug()
  lkml.kernel.org/r/1438433365-2979-5-git-send-email-uobergfe@...hat.com


Regards,

Uli
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