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Commit cda7e413 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Thomas Gleixner
Browse files

arc: 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.

Acked-by: default avatarVineet Gupta <vgupta@synopsys.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 212d3be1

arch/arc/include/asm/atomic.h

+17 −2
Original line number Original line Diff line number Diff line
@@ -143,14 +143,29 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \ 




ATOMIC_OPS(add, +=, add)

ATOMIC_OPS(add, +=, add)

ATOMIC_OPS(sub, -=, sub)

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_OPS

#undef ATOMIC_OP_RETURN

#undef ATOMIC_OP_RETURN

#undef ATOMIC_OP

#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

 * __atomic_add_unless - add unless the number is a given value

 * @v: pointer of type atomic_t

 * @v: pointer of type atomic_t