[PATCH 11/28] m68k: Provide atomic_{or,xor,and}

Peter Zijlstra
2015-07-16T17:32:37Z

[-- Attachment #1: peterz-m68k-atomic_logic_ops.patch --]
[-- Type: text/plain, Size: 1395 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: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/m68k/include/asm/atomic.h | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)

--- a/arch/m68k/include/asm/atomic.h
+++ b/arch/m68k/include/asm/atomic.h
@@ -77,6 +77,12 @@ static inline int atomic_##op##_return(i
ATOMIC_OPS(add, +=, add)
ATOMIC_OPS(sub, -=, sub)

+#define CONFIG_ARCH_HAS_ATOMIC_OR
+
+ATOMIC_OP(and, &=, and)
+ATOMIC_OP(or, |=, or)
+ATOMIC_OP(xor, ^=, eor)
+
#undef ATOMIC_OPS
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
@@ -170,14 +176,14 @@ 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)