From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Frysinger Subject: Re: [PATCH] atomic: add *_dec_not_zero Date: Wed, 4 May 2011 00:44:46 -0400 Message-ID: References: <1304458235-28473-1-git-send-email-sven@narfation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1304458235-28473-1-git-send-email-sven@narfation.org> Sender: linux-alpha-owner@vger.kernel.org To: Sven Eckelmann Cc: linux-kernel@vger.kernel.org, David Howells , Chris Metcalf , x86@kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, uclinux-dist-devel@blackfin.uclinux.org, linux-cris-kernel@axis.com, linux-ia64@vger.kernel.org, linux-m32r@ml.linux-m32r.org, linux-m68k@lists.linux-m68k.org, linux-mips@linux-mips.org, linux-am33-list@redhat.com, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org List-Id: linux-arch.vger.kernel.org On Tue, May 3, 2011 at 17:30, Sven Eckelmann wrote: > Introduce an *_dec_not_zero operation. =C2=A0Make 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. > > Cc: uclinux-dist-devel@blackfin.uclinux.org > > --- a/arch/blackfin/include/asm/atomic.h > +++ b/arch/blackfin/include/asm/atomic.h > @@ -103,6 +103,7 @@ static inline int atomic_test_mask(int mask, atom= ic_t *v) > c !=3D (u); \ > }) > #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) > +#define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) > > /* > * atomic_inc_and_test - increment and test no opinion on the actual idea, but for the Blackfin pieces: Acked-by: Mike Frysinger -mike -- To unsubscribe from this list: send the line "unsubscribe linux-alpha" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yx0-f174.google.com ([209.85.213.174]:38802 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751101Ab1EDEpI convert rfc822-to-8bit (ORCPT ); Wed, 4 May 2011 00:45:08 -0400 MIME-Version: 1.0 In-Reply-To: <1304458235-28473-1-git-send-email-sven@narfation.org> References: <1304458235-28473-1-git-send-email-sven@narfation.org> From: Mike Frysinger Date: Wed, 4 May 2011 00:44:46 -0400 Message-ID: Subject: Re: [PATCH] atomic: add *_dec_not_zero Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-arch-owner@vger.kernel.org List-ID: To: Sven Eckelmann Cc: linux-kernel@vger.kernel.org, David Howells , Chris Metcalf , x86@kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, uclinux-dist-devel@blackfin.uclinux.org, linux-cris-kernel@axis.com, linux-ia64@vger.kernel.org, linux-m32r@ml.linux-m32r.org, linux-m68k@lists.linux-m68k.org, linux-mips@linux-mips.org, linux-am33-list@redhat.com, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org Message-ID: <20110504044446.lJLF0ZMWKUHj4eiCV-T-ILb_HCHVrdqmZ-mc4ut-uIM@z> On Tue, May 3, 2011 at 17:30, Sven Eckelmann 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. > > Cc: uclinux-dist-devel@blackfin.uclinux.org > > --- a/arch/blackfin/include/asm/atomic.h > +++ b/arch/blackfin/include/asm/atomic.h > @@ -103,6 +103,7 @@ static inline int atomic_test_mask(int mask, atomic_t *v) > c != (u); \ > }) > #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) > +#define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) > > /* > * atomic_inc_and_test - increment and test no opinion on the actual idea, but for the Blackfin pieces: Acked-by: Mike Frysinger -mike