linux-kernel - Re: [PATCH] atomic: add *_dec_not

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Date:	Wed, 4 May 2011 10:21:16 +0200
From:	Sven Eckelmann <sven@...fation.org>
To:	"David Laight" <David.Laight@...lab.com>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-mips@...ux-mips.org, linux-m32r@...linux-m32r.org,
	linux-ia64@...r.kernel.org, linux-parisc@...r.kernel.org,
	linux-cris-kernel@...s.com, linux-s390@...r.kernel.org,
	linux-sh@...r.kernel.org, x86@...nel.org,
	"Chris Metcalf" <cmetcalf@...era.com>,
	"David Howells" <dhowells@...hat.com>,
	linux-m68k@...ts.linux-m68k.org, linux-am33-list@...hat.com,
	linux-alpha@...r.kernel.org, sparclinux@...r.kernel.org,
	uclinux-dist-devel@...ckfin.uclinux.org,
	linuxppc-dev@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] atomic: add *_dec_not_zero

On Wednesday 04 May 2011 10:05:53 David Laight wrote:
> > Introduce an *_dec_not_zero operation.  Make this a special case of
> > *_add_unless because batman-adv uses atomic_dec_not_zero in different
> > places like re-broadcast queue or aggregation queue management. There
> > are other non-final patches which may also want to use this macro.
> 
> Isn't there a place where a default definition of this can be
> defined? Instead of adding it separately to every architecture.

Not that I would know about such a place - and all other atomic* macro 
definitions also suggest that there is no such place.

Kind regards,
	Sven

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