Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932099AbXBKTW7 (ORCPT ); Sun, 11 Feb 2007 14:22:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932102AbXBKTW6 (ORCPT ); Sun, 11 Feb 2007 14:22:58 -0500 Received: from tomts22.bellnexxia.net ([209.226.175.184]:64200 "EHLO tomts22-srv.bellnexxia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932099AbXBKTW5 (ORCPT ); Sun, 11 Feb 2007 14:22:57 -0500 From: Mathieu Desnoyers To: linux-kernel@vger.kernel.org Cc: Andrew Morton , Mathieu Desnoyers Subject: [PATCH 04/10] atomic.h : Add atomic64 cmpxchg, xchg and add_unless to ia64 Date: Sun, 11 Feb 2007 14:17:42 -0500 Message-Id: <11712214681012-git-send-email-mathieu.desnoyers@polymtl.ca> X-Mailer: git-send-email 1.4.4.4 In-Reply-To: <11712214684187-git-send-email-mathieu.desnoyers@polymtl.ca> References: <11712214684187-git-send-email-mathieu.desnoyers@polymtl.ca> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1688 Lines: 53 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 +88,16 @@ 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) (cmpxchg(&((v)->counter), old, new)) #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) +#define atomic64_cmpxchg(v, old, new) \ + (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 +111,22 @@ 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); \ - 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/