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Commit 12589790 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Thomas Gleixner
Browse files

arm: Provide atomic_{or,xor,and} 



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: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent cda7e413

arch/arm/include/asm/atomic.h

+15 −0
Original line number Original line Diff line number Diff line
@@ -194,6 +194,14 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) 
ATOMIC_OPS(add, +=, add)

ATOMIC_OPS(add, +=, add)

ATOMIC_OPS(sub, -=, sub)

ATOMIC_OPS(sub, -=, sub)





#define CONFIG_ARCH_HAS_ATOMIC_OR

#define atomic_andnot atomic_andnot



ATOMIC_OP(and, &=, and)

ATOMIC_OP(andnot, &= ~, bic)

ATOMIC_OP(or,  |=, orr)

ATOMIC_OP(xor, ^=, eor)



#undef ATOMIC_OPS

#undef ATOMIC_OPS

#undef ATOMIC_OP_RETURN

#undef ATOMIC_OP_RETURN

#undef ATOMIC_OP

#undef ATOMIC_OP
@@ -321,6 +329,13 @@ static inline long long atomic64_##op##_return(long long i, atomic64_t *v) \ 
ATOMIC64_OPS(add, adds, adc)

ATOMIC64_OPS(add, adds, adc)

ATOMIC64_OPS(sub, subs, sbc)

ATOMIC64_OPS(sub, subs, sbc)





#define atomic64_andnot atomic64_andnot



ATOMIC64_OP(and, and, and)

ATOMIC64_OP(andnot, bic, bic)

ATOMIC64_OP(or,  orr, orr)

ATOMIC64_OP(xor, eor, eor)



#undef ATOMIC64_OPS

#undef ATOMIC64_OPS

#undef ATOMIC64_OP_RETURN

#undef ATOMIC64_OP_RETURN

#undef ATOMIC64_OP

#undef ATOMIC64_OP