From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8050 invoked by alias); 21 Dec 2006 00:13:07 -0000 Received: (qmail 8042 invoked by uid 22791); 21 Dec 2006 00:13:07 -0000 X-Spam-Status: No, hits=-2.4 required=5.0 tests=AWL,BAYES_00,FORGED_RCVD_HELO X-Spam-Check-By: sourceware.org Received: from tomts13.bellnexxia.net (HELO tomts13-srv.bellnexxia.net) (209.226.175.34) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 21 Dec 2006 00:13:00 +0000 Received: from krystal.dyndns.org ([67.68.205.181]) by tomts13-srv.bellnexxia.net (InterMail vM.5.01.06.13 201-253-122-130-113-20050324) with ESMTP id <20061221001257.NMPU1773.tomts13-srv.bellnexxia.net@krystal.dyndns.org> for ; Wed, 20 Dec 2006 19:12:57 -0500 Received: from localhost (localhost [127.0.0.1]) (uid 1000) by krystal.dyndns.org with local; Wed, 20 Dec 2006 19:12:56 -0500 id 0014F5EC.4589D188.00006455 Date: Thu, 21 Dec 2006 00:15:00 -0000 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) X-IsSubscribed: yes Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q4/txt/msg00722.txt.bz2 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