[PATCH 16/28] powerpc: Provide atomic_{or,xor,and}

Peter Zijlstra
2015-07-16T17:21:26Z

[-- Attachment #1: peterz-powerpc-atomic_logic_ops.patch --]
[-- Type: text/plain, Size: 933 bytes --]

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

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

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/powerpc/include/asm/atomic.h | 9 +++++++++
1 file changed, 9 insertions(+)

--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -67,6 +67,12 @@ static __inline__ int atomic_##op##_retu
ATOMIC_OPS(add, add)
ATOMIC_OPS(sub, subf)

+#define CONFIG_ARCH_HAS_ATOMIC_OR
+
+ATOMIC_OP(and, and)
+ATOMIC_OP(or, or)
+ATOMIC_OP(xor, xor)
+
#undef ATOMIC_OPS
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
@@ -304,6 +310,9 @@ static __inline__ long atomic64_##op##_r

ATOMIC64_OPS(add, add)
ATOMIC64_OPS(sub, subf)
+ATOMIC64_OP(and, and)
+ATOMIC64_OP(or, or)
+ATOMIC64_OP(xor, xor)

#undef ATOMIC64_OPS
#undef ATOMIC64_OP_RETURN