linux-kernel - Re: [PATCH 8/8] [watchdog] separate touch_nmi_watchdog code path from touch

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Message-ID: <20100428202849.GS15159@redhat.com>
Date:	Wed, 28 Apr 2010 16:28:49 -0400
From:	Don Zickus <dzickus@...hat.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	mingo@...e.hu, peterz@...radead.org, gorcunov@...il.com,
	aris@...hat.com, linux-kernel@...r.kernel.org,
	randy.dunlap@...cle.com
Subject: Re: [PATCH 8/8] [watchdog] separate touch_nmi_watchdog code path
 from touch_watchdog

On Wed, Apr 28, 2010 at 02:48:18PM +0200, Frederic Weisbecker wrote:
> On Fri, Apr 23, 2010 at 12:13:36PM -0400, Don Zickus wrote:
> > When I combined the nmi_watchdog (hardlockup) and softlockup code, I
> > also combined the paths the touch_watchdog and touch_nmi_watchdog took.
> > This may not be the best idea as pointed out by Frederic W., that the
> > touch_watchdog case probably should not reset the hardlockup count.
> > 
> > Therefore the patch belows falls back to the previous idea of keeping
> > the touch_nmi_watchdog a superset of the touch_watchdog case.
> > 
> > Signed-off-by: Don Zickus <dzickus@...hat.com>
> 
> 
> 
> Good. But now that we have this, it doesn't make sense anymore
> to have the big rename touch_softlockup_watchdog() into touch_watchdog().
> 
> I know it was me who advised you to do this big rename, but that was
> before I realised touching the softlockup shouldn't mean touching nmi
> watchdog too.
> 
> I'm sorry about this but this big rename doesn't make sense anymore.
> 
> Can we drop touch_watchdog() and keep only the two previous APIs we had
> before?
> 
> 1) we avoid a big patch very likely to bring conflicts everywhere
> 2) touch_softlockup_watchdog() is much more self-explanatory in what
>    it does. People will have less doubts about what happens when they
>    call this.
> 
> Thanks.

ok.  I'll repost.

Cheers,
Don

> 
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