[patch 10/28] Add cmpxchg_local to cris

[Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>]

Use the new generic cmpxchg_local (disables interrupt). Also use the generic
cmpxchg as fallback if SMP is not set.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: clameter@sgi.com
CC: starvik@axis.com
---
 include/asm-cris/system.h |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

Index: linux-2.6-lttng/include/asm-cris/system.h
===================================================================
--- linux-2.6-lttng.orig/include/asm-cris/system.h	2007-10-31 17:32:44.000000000 -0400
+++ linux-2.6-lttng/include/asm-cris/system.h	2007-10-31 18:04:20.000000000 -0400
@@ -66,6 +66,21 @@ static inline unsigned long __xchg(unsig
   return x;
 }
 
+#include <asm-generic/cmpxchg-local.h>
+
+/*
+ * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
+ * them available.
+ */
+#define cmpxchg_local(ptr, o, n)				 	       \
+	((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
+			(unsigned long)(n), sizeof(*(ptr))))
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
+#ifndef CONFIG_SMP
+#include <asm-generic/cmpxchg.h>
+#endif
+
 #define arch_align_stack(x) (x)
 
 void default_idle(void);

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
-
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/