[PATCH 06/28] avr32: Provide atomic_{or,xor,and}

Peter Zijlstra
2015-07-16T17:33:14Z

[-- Attachment #1: peterz-avr32-atomic_logic_ops.patch --]
[-- Type: text/plain, Size: 849 bytes --]

Implement atomic logic ops -- atomic_{or,xor,and}.

These will replace the atomic_{set,clear}_mask functions that are
available on some archs.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/avr32/include/asm/atomic.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)

--- a/arch/avr32/include/asm/atomic.h
+++ b/arch/avr32/include/asm/atomic.h
@@ -44,6 +44,20 @@ static inline int __atomic_##op##_return
ATOMIC_OP_RETURN(sub, sub, rKs21)
ATOMIC_OP_RETURN(add, add, r)

+#define ATOMIC_OP(op, asm_op) \
+ATOMIC_OP_RETURN(op, asm_op, r) \
+static inline void atomic_##op(int i, atomic_t *v) \
+{ \
+ (void)__atomic_##op##_return(i, v); \
+}
+
+#define CONFIG_ARCH_HAS_ATOMIC_OR
+
+ATOMIC_OP(and, and)
+ATOMIC_OP(or, or)
+ATOMIC_OP(xor, eor)
+
+#undef ATOMIC_OP
#undef ATOMIC_OP_RETURN

/*