[PATCH 03/28] arc: Provide atomic_{or,xor,and}

Peter Zijlstra
2015-07-16T17:34:06Z

[-- Attachment #1: peterz-arc-atomic_logic_ops.patch --]
[-- Type: text/plain, Size: 1212 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: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/arc/include/asm/atomic.h | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)

--- a/arch/arc/include/asm/atomic.h
+++ b/arch/arc/include/asm/atomic.h
@@ -143,14 +143,29 @@ static inline int atomic_##op##_return(i

ATOMIC_OPS(add, +=, add)
ATOMIC_OPS(sub, -=, sub)
-ATOMIC_OP(and, &=, and)

-#define atomic_clear_mask(mask, v) atomic_and(~(mask), (v))
+#define CONFIG_ARCH_HAS_ATOMIC_OR
+#define atomic_andnot atomic_andnot
+
+ATOMIC_OP(and, &=, and)
+ATOMIC_OP(andnot, &= ~, bic)
+ATOMIC_OP(or, |=, or)
+ATOMIC_OP(xor, ^=, xor)

#undef ATOMIC_OPS
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP

+static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v)
+{
+ atomic_and(~mask, v);
+}
+
+static inline __deprecated void atomic_set_mask(unsigned int mask, atomic_t *v)
+{
+ atomic_or(mask, v);
+}
+
/**
* __atomic_add_unless - add unless the number is a given value
* @v: pointer of type atomic_t