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Diffstat (limited to 'include/asm-m68knommu/system.h')
-rw-r--r--include/asm-m68knommu/system.h28
1 files changed, 11 insertions, 17 deletions
diff --git a/include/asm-m68knommu/system.h b/include/asm-m68knommu/system.h
index ee2dc07bae0..039ab3f8173 100644
--- a/include/asm-m68knommu/system.h
+++ b/include/asm-m68knommu/system.h
@@ -186,26 +186,20 @@ static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int siz
}
#endif
+#include <asm-generic/cmpxchg-local.h>
+
/*
- * Atomic compare and exchange. Compare OLD with MEM, if identical,
- * store NEW in MEM. Return the initial value in MEM. Success is
- * indicated by comparing RETURN with OLD.
+ * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
+ * them available.
*/
-#define __HAVE_ARCH_CMPXCHG 1
-
-static __inline__ unsigned long
-cmpxchg(volatile int *p, int old, int new)
-{
- unsigned long flags;
- int prev;
-
- local_irq_save(flags);
- if ((prev = *p) == old)
- *p = new;
- local_irq_restore(flags);
- return(prev);
-}
+#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
#if defined( CONFIG_M68328 ) || defined( CONFIG_M68EZ328 ) || \
defined (CONFIG_M68360) || defined( CONFIG_M68VZ328 )