From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24073 invoked by alias); 25 Jan 2007 17:06:44 -0000 Received: (qmail 24045 invoked by uid 22791); 25 Jan 2007 17:06:43 -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 tomts22.bellnexxia.net (HELO tomts22-srv.bellnexxia.net) (209.226.175.184) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 25 Jan 2007 17:06:34 +0000 Received: from krystal.dyndns.org ([67.68.204.133]) by tomts22-srv.bellnexxia.net (InterMail vM.5.01.06.13 201-253-122-130-113-20050324) with ESMTP id <20070125170631.PRRI8030.tomts22-srv.bellnexxia.net@krystal.dyndns.org> for ; Thu, 25 Jan 2007 12:06:31 -0500 Received: from localhost (localhost [127.0.0.1]) (uid 1000) by krystal.dyndns.org with local; Thu, 25 Jan 2007 11:15:55 -0500 id 001832B4.45B8D7BB.000022BD From: Mathieu Desnoyers To: linux-kernel@vger.kernel.org Cc: Linus Torvalds , Andrew Morton , Ingo Molnar , Greg Kroah-Hartman , Christoph Hellwig , ltt-dev@shafik.org, systemtap@sources.redhat.com, Douglas Niehaus , "Martin J. Bligh" , Thomas Gleixner , Paul Mackerras , Mathieu Desnoyers Subject: [PATCH 04/09] atomic.h : Add atomic64 cmpxchg, xchg and add_unless to ia64 Date: Thu, 25 Jan 2007 17:06:00 -0000 Message-Id: <1169741755638-git-send-email-mathieu.desnoyers@polymtl.ca> X-Mailer: git-send-email 1.4.4.3 In-Reply-To: <11697417541743-git-send-email-mathieu.desnoyers@polymtl.ca> References: <11697417541743-git-send-email-mathieu.desnoyers@polymtl.ca> 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: 2007-q1/txt/msg00208.txt.bz2 atomic.h : Add atomic64 cmpxchg, xchg and add_unless to ia64 Signed-off-by: Mathieu Desnoyers --- a/include/asm-ia64/atomic.h +++ b/include/asm-ia64/atomic.h @@ -88,12 +88,17 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v) return new; } -#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new)) +#define atomic_cmpxchg(v, old, new) \ + ((__typeof__((v)->counter))cmpxchg(&((v)->counter), old, new)) #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) +#define atomic64_cmpxchg(v, old, new) \ + ((__typeof__((v)->counter))cmpxchg(&((v)->counter), old, new)) +#define atomic64_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))) \ @@ -107,6 +112,22 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v) }) #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) +#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; \ + } \ + c != (u); \ +}) +#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) + #define atomic_add_return(i,v) \ ({ \ int __ia64_aar_i = (i); \