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[patch 05/28] Add cmpxchg64 and cmpxchg64_local to powerpc

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From: Mathieu Desnoyers <mathieu.desnoyers@...>
To: <akpm@...>, <linux-kernel@...>, <matthew@...>, <linux-arch@...>, <penberg@...>, <linux-mm@...>, Christoph Lameter <clameter@...>
Cc: Mathieu Desnoyers <mathieu.desnoyers@...>, Paul Mackerras <paulus@...>, <linuxppc-dev@...>
Subject: [patch 05/28] Add cmpxchg64 and cmpxchg64_local to powerpc
Date: Tuesday, October 30, 2007 - 3:16 pm

Make sure that at least cmpxchg64_local is available on all architectures to use
for unsigned long long values.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Paul Mackerras <paulus@samba.org>
CC: linuxppc-dev@ozlabs.org
---
 include/asm-powerpc/system.h |    6 ++++++
 1 file changed, 6 insertions(+)

Index: linux-2.6-lttng/include/asm-powerpc/system.h
===================================================================
--- linux-2.6-lttng.orig/include/asm-powerpc/system.h	2007-09-24 10:50:11.000000000 -0400
+++ linux-2.6-lttng/include/asm-powerpc/system.h	2007-09-24 11:01:04.000000000 -0400
@@ -488,6 +488,12 @@ __cmpxchg_local(volatile void *ptr, unsi
  */
 #define NET_IP_ALIGN	0
 #define NET_SKB_PAD	L1_CACHE_BYTES
+
+#define cmpxchg64	cmpxchg
+#define cmpxchg64_local	cmpxchg_local
+#else
+#include <asm-generic/cmpxchg-local.h>
+#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
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[patch 05/28] Add cmpxchg64 and cmpxchg64_local to powerpc, Mathieu Desnoyers, (Tue Oct 30, 3:16 pm)