Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161077AbWLUANE (ORCPT ); Wed, 20 Dec 2006 19:13:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161078AbWLUANE (ORCPT ); Wed, 20 Dec 2006 19:13:04 -0500 Received: from tomts20-srv.bellnexxia.net ([209.226.175.74]:60914 "EHLO tomts20-srv.bellnexxia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161075AbWLUANB (ORCPT ); Wed, 20 Dec 2006 19:13:01 -0500 Date: Wed, 20 Dec 2006 19:12:56 -0500 From: Mathieu Desnoyers To: linux-kernel@vger.kernel.org, Andrew Morton , Ingo Molnar , Greg Kroah-Hartman , Christoph Hellwig Cc: ltt-dev@shafik.org, systemtap@sources.redhat.com, Douglas Niehaus , "Martin J. Bligh" , Thomas Gleixner Subject: [PATCH 8/9] atomic.h : sparc Message-ID: <20061221001256.GN28643@Krystal> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <20061221000351.GF28643@Krystal> X-Editor: vi X-Info: http://krystal.dyndns.org:8080 X-Operating-System: Linux/2.4.32-grsec (i686) X-Uptime: 19:12:09 up 119 days, 21:19, 6 users, load average: 1.77, 1.84, 1.42 User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2012 Lines: 57 64 bits cmpxchg, xchg and add_unless for sparc. Signed-off-by: Mathieu Desnoyers --- a/include/asm-sparc64/atomic.h +++ b/include/asm-sparc64/atomic.h @@ -70,12 +70,13 @@ #define atomic64_dec(v) atomic64_sub(1, #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0) #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0) -#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n))) +#define atomic_cmpxchg(v, o, n) \ + ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n))) #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) #define atomic_add_unless(v, a, u) \ ({ \ - int c, old; \ + __typeof__((v)->counter) c, old; \ c = atomic_read(v); \ for (;;) { \ if (unlikely(c == (u))) \ @@ -89,6 +90,26 @@ ({ \ }) #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) +#define atomic64_cmpxchg(v, o, n) \ + ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n))) +#define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) + +#define atomic64_add_unless(v, a, u) \ +({ \ + __typeof__((v)->counter) c, old; \ + c = atomic64_read(v); \ + for (;;) { \ + if (unlikely(c == (u))) \ + break; \ + old = atomic64_cmpxchg((v), c, c + (a)); \ + if (likely(old == c)) \ + break; \ + c = old; \ + } \ + likely(c != (u)); \ +}) +#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) + /* Atomic operations are already serializing */ #ifdef CONFIG_SMP #define smp_mb__before_atomic_dec() membar_storeload_loadload(); OpenPGP public key: http://krystal.dyndns.org:8080/key/compudj.gpg Key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/