Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=aebb77aef4b50a157bf0185de31d1aede3ca2312
Commit: aebb77aef4b50a157bf0185de31d1aede3ca2312
Parent: 14e0cb3c60b89c4a2512852ffc18601c72314a0f
Author: Mathieu Desnoyers <[EMAIL PROTECTED]>
AuthorDate: Thu Feb 7 00:16:15 2008 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Feb 7 08:42:32 2008 -0800
Add cmpxchg_local to h8300
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 <[EMAIL PROTECTED]>
Cc: Yoshinori Sato <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
include/asm-h8300/system.h | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/include/asm-h8300/system.h b/include/asm-h8300/system.h
index 2c1e83f..4b8e475 100644
--- a/include/asm-h8300/system.h
+++ b/include/asm-h8300/system.h
@@ -138,6 +138,21 @@ static inline unsigned long __xchg(unsigned long x,
volatile void * ptr, int siz
asm("jmp @@0"); \
})
+#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)
#endif /* _H8300_SYSTEM_H */
-
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