From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752995AbXJaWok (ORCPT ); Wed, 31 Oct 2007 18:44:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759792AbXJaWm0 (ORCPT ); Wed, 31 Oct 2007 18:42:26 -0400 Received: from smtp.polymtl.ca ([132.207.4.11]:51382 "EHLO smtp.polymtl.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759000AbXJaWmX (ORCPT ); Wed, 31 Oct 2007 18:42:23 -0400 Message-Id: <20071031224211.814532139@polymtl.ca> References: <20071031223710.099558229@polymtl.ca> User-Agent: quilt/0.46-1 Date: Wed, 31 Oct 2007 18:37:15 -0400 From: Mathieu Desnoyers To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org Cc: Mathieu Desnoyers , Paul Mackerras , linuxppc-dev@ozlabs.org Subject: [patch 05/28] Add cmpxchg64 and cmpxchg64_local to powerpc Content-Disposition: inline; filename=add-cmpxchg64-to-powerpc.patch X-Poly-FromMTA: (dijkstra.casi.polymtl.ca [132.207.72.10]) at Wed, 31 Oct 2007 22:42:12 +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Make sure that at least cmpxchg64_local is available on all architectures to use for unsigned long long values. Signed-off-by: Mathieu Desnoyers Acked-by: Paul Mackerras CC: linuxppc-dev@ozlabs.org --- include/asm-powerpc/system.h | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) Index: linux-2.6-lttng/include/asm-powerpc/system.h =================================================================== --- linux-2.6-lttng.orig/include/asm-powerpc/system.h 2007-10-31 17:32:44.000000000 -0400 +++ linux-2.6-lttng/include/asm-powerpc/system.h 2007-10-31 17:56:25.000000000 -0400 @@ -461,7 +461,7 @@ __cmpxchg_local(volatile void *ptr, unsi return old; } -#define cmpxchg(ptr,o,n) \ +#define cmpxchg(ptr, o, n) \ ({ \ __typeof__(*(ptr)) _o_ = (o); \ __typeof__(*(ptr)) _n_ = (n); \ @@ -470,7 +470,7 @@ __cmpxchg_local(volatile void *ptr, unsi }) -#define cmpxchg_local(ptr,o,n) \ +#define cmpxchg_local(ptr, o, n) \ ({ \ __typeof__(*(ptr)) _o_ = (o); \ __typeof__(*(ptr)) _n_ = (n); \ @@ -490,6 +490,20 @@ __cmpxchg_local(volatile void *ptr, unsi */ #define NET_IP_ALIGN 0 #define NET_SKB_PAD L1_CACHE_BYTES + +#define cmpxchg64(ptr, o, n) \ + ({ \ + BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ + cmpxchg((ptr), (o), (n)); \ + }) +#define cmpxchg64_local(ptr, o, n) \ + ({ \ + BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ + cmpxchg_local((ptr), (o), (n)); \ + }) +#else +#include +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) #endif #define arch_align_stack(x) (x) -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68