Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5e86c11d3eb4662000f3ced7344352b2ca319d03
Commit: 5e86c11d3eb4662000f3ced7344352b2ca319d03
Parent: 176393d4232a89aaf8745b0726f4d212a20103f1
Author: Mathieu Desnoyers <[EMAIL PROTECTED]>
AuthorDate: Thu Feb 7 00:16:12 2008 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Feb 7 08:42:31 2008 -0800
Add cmpxchg_local to avr32
Use the new generic cmpxchg_local (disables interrupt) for 8, 16 and 64 bits
cmpxchg_local. Use the __cmpxchg_u32 primitive for 32 bits cmpxchg_local.
Note that cmpxchg only uses the __cmpxchg_u32 or __cmpxchg_u64 and will
cause
a linker error if called with 8 or 16 bits argument.
Signed-off-by: Mathieu Desnoyers <[EMAIL PROTECTED]>
Acked-by: Haavard Skinnemoen <[EMAIL PROTECTED]>
Cc: Haavard Skinnemoen <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
include/asm-avr32/system.h | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/include/asm-avr32/system.h b/include/asm-avr32/system.h
index c600cc1..9702c22 100644
--- a/include/asm-avr32/system.h
+++ b/include/asm-avr32/system.h
@@ -145,6 +145,29 @@ static inline unsigned long __cmpxchg(volatile void *ptr,
unsigned long old,
(unsigned long)(new), \
sizeof(*(ptr))))
+#include <asm-generic/cmpxchg-local.h>
+
+static inline unsigned long __cmpxchg_local(volatile void *ptr,
+ unsigned long old,
+ unsigned long new, int size)
+{
+ switch (size) {
+ case 4:
+ return __cmpxchg_u32(ptr, old, new);
+ default:
+ return __cmpxchg_local_generic(ptr, old, new, size);
+ }
+
+ return old;
+}
+
+#define cmpxchg_local(ptr, old, new) \
+ ((typeof(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(old), \
+ (unsigned long)(new), \
+ sizeof(*(ptr))))
+
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
struct pt_regs;
void NORET_TYPE die(const char *str, struct pt_regs *regs, long err);
void _exception(long signr, struct pt_regs *regs, int code,
-
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