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

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Date:	Wed, 28 Apr 2010 14:48:18 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Don Zickus <dzickus@...hat.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 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.

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