Commit 586b610e authored by Will Deacon's avatar Will Deacon Committed by Ingo Molnar
Browse files

locking, asm-generic: Rework atomic-long.h to avoid bulk code duplication 



We can use some (admittedly ugly) macros to generate the 32-bit and
64-bit based atomic_long implementations from the same code.

Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman.Long@hp.com
Cc: paulmck@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1438880084-18856-3-git-send-email-will.deacon@arm.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 654672d4

include/asm-generic/atomic-long.h

+40 −149
Original line number Diff line number Diff line
@@ -23,236 +23,127 @@ 
typedef atomic64_t atomic_long_t;



#define ATOMIC_LONG_INIT(i)	ATOMIC64_INIT(i)

#define ATOMIC_LONG_PFX(x)	atomic64 ## x



static inline long atomic_long_read(atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	return (long)atomic64_read(v);

}



static inline void atomic_long_set(atomic_long_t *l, long i)

{

	atomic64_t *v = (atomic64_t *)l;



	atomic64_set(v, i);

}



static inline void atomic_long_inc(atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	atomic64_inc(v);

}



static inline void atomic_long_dec(atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	atomic64_dec(v);

}



static inline void atomic_long_add(long i, atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	atomic64_add(i, v);

}



static inline void atomic_long_sub(long i, atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	atomic64_sub(i, v);

}



static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	return atomic64_sub_and_test(i, v);

}



static inline int atomic_long_dec_and_test(atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	return atomic64_dec_and_test(v);

}



static inline int atomic_long_inc_and_test(atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	return atomic64_inc_and_test(v);

}



static inline int atomic_long_add_negative(long i, atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	return atomic64_add_negative(i, v);

}



static inline long atomic_long_add_return(long i, atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	return (long)atomic64_add_return(i, v);

}



static inline long atomic_long_sub_return(long i, atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	return (long)atomic64_sub_return(i, v);

}



static inline long atomic_long_inc_return(atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	return (long)atomic64_inc_return(v);

}



static inline long atomic_long_dec_return(atomic_long_t *l)

{

	atomic64_t *v = (atomic64_t *)l;



	return (long)atomic64_dec_return(v);

}



static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)

{

	atomic64_t *v = (atomic64_t *)l;



	return (long)atomic64_add_unless(v, a, u);

}



#define atomic_long_inc_not_zero(l) atomic64_inc_not_zero((atomic64_t *)(l))



#define atomic_long_cmpxchg(l, old, new) \

	(atomic64_cmpxchg((atomic64_t *)(l), (old), (new)))

#define atomic_long_xchg(v, new) \

	(atomic64_xchg((atomic64_t *)(v), (new)))



#else  /*  BITS_PER_LONG == 64  */

#else



typedef atomic_t atomic_long_t;



#define ATOMIC_LONG_INIT(i)	ATOMIC_INIT(i)

#define ATOMIC_LONG_PFX(x)	atomic ## x



#endif



static inline long atomic_long_read(atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return (long)atomic_read(v);

	return (long)ATOMIC_LONG_PFX(_read)(v);

}



static inline void atomic_long_set(atomic_long_t *l, long i)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	atomic_set(v, i);

	ATOMIC_LONG_PFX(_set)(v, i);

}



static inline void atomic_long_inc(atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	atomic_inc(v);

	ATOMIC_LONG_PFX(_inc)(v);

}



static inline void atomic_long_dec(atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	atomic_dec(v);

	ATOMIC_LONG_PFX(_dec)(v);

}



static inline void atomic_long_add(long i, atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	atomic_add(i, v);

	ATOMIC_LONG_PFX(_add)(i, v);

}



static inline void atomic_long_sub(long i, atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	atomic_sub(i, v);

	ATOMIC_LONG_PFX(_sub)(i, v);

}



static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return atomic_sub_and_test(i, v);

	return ATOMIC_LONG_PFX(_sub_and_test)(i, v);

}



static inline int atomic_long_dec_and_test(atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return atomic_dec_and_test(v);

	return ATOMIC_LONG_PFX(_dec_and_test)(v);

}



static inline int atomic_long_inc_and_test(atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return atomic_inc_and_test(v);

	return ATOMIC_LONG_PFX(_inc_and_test)(v);

}



static inline int atomic_long_add_negative(long i, atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return atomic_add_negative(i, v);

	return ATOMIC_LONG_PFX(_add_negative)(i, v);

}



static inline long atomic_long_add_return(long i, atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return (long)atomic_add_return(i, v);

	return (long)ATOMIC_LONG_PFX(_add_return)(i, v);

}



static inline long atomic_long_sub_return(long i, atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return (long)atomic_sub_return(i, v);

	return (long)ATOMIC_LONG_PFX(_sub_return)(i, v);

}



static inline long atomic_long_inc_return(atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return (long)atomic_inc_return(v);

	return (long)ATOMIC_LONG_PFX(_inc_return)(v);

}



static inline long atomic_long_dec_return(atomic_long_t *l)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return (long)atomic_dec_return(v);

	return (long)ATOMIC_LONG_PFX(_dec_return)(v);

}



static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)

{

	atomic_t *v = (atomic_t *)l;

	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;



	return (long)atomic_add_unless(v, a, u);

	return (long)ATOMIC_LONG_PFX(_add_unless)(v, a, u);

}



#define atomic_long_inc_not_zero(l) atomic_inc_not_zero((atomic_t *)(l))



#define atomic_long_inc_not_zero(l) \

	ATOMIC_LONG_PFX(_inc_not_zero)((ATOMIC_LONG_PFX(_t) *)(l))

#define atomic_long_cmpxchg(l, old, new) \

	(atomic_cmpxchg((atomic_t *)(l), (old), (new)))

	(ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new)))

#define atomic_long_xchg(v, new) \

	(atomic_xchg((atomic_t *)(v), (new)))



#endif  /*  BITS_PER_LONG == 64  */

	(ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new)))



#endif  /*  _ASM_GENERIC_ATOMIC_LONG_H  */

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