Thread (53 messages) 53 messages, 10 authors, 2015-07-15

[RFC][PATCH 10/24] m68k: Provide atomic_{or,xor,and}

From: Peter Zijlstra <peterz@infradead.org>
Date: 2015-07-09 17:57:29
Also in: lkml

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/m68k/include/asm/atomic.h |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)
--- a/arch/m68k/include/asm/atomic.h
+++ b/arch/m68k/include/asm/atomic.h
@@ -82,6 +82,9 @@ static inline int atomic_##op##_return(i
 
 ATOMIC_OPS(add, +=, add)
 ATOMIC_OPS(sub, -=, sub)
+ATOMIC_OP(and, &=, and)
+ATOMIC_OP(or, |=, or)
+ATOMIC_OP(xor, ^=, eor)
 
 #undef ATOMIC_OPS
 #undef ATOMIC_OP_RETURN
@@ -176,14 +179,14 @@ static inline int atomic_add_negative(in
 	return c != 0;
 }
 
-static inline void atomic_clear_mask(unsigned long mask, unsigned long *v)
+static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v)
 {
-	__asm__ __volatile__("andl %1,%0" : "+m" (*v) : ASM_DI (~(mask)));
+	atomic_and(~mask, v);
 }
 
-static inline void atomic_set_mask(unsigned long mask, unsigned long *v)
+static inline __deprecated void atomic_set_mask(unsigned int mask, atomic_t *v)
 {
-	__asm__ __volatile__("orl %1,%0" : "+m" (*v) : ASM_DI (mask));
+	atomic_or(mask, v);
 }
 
 static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
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