Commit 0203fdc1 authored by Mark Rutland's avatar Mark Rutland Committed by Ingo Molnar
Browse files

locking/atomic, alpha: Use s64 for atomic64 



As a step towards making the atomic64 API use consistent types treewide,
let's have the alpha atomic64 implementation use s64 as the underlying
type for atomic64_t, rather than long, matching the generated headers.

As atomic64_read() depends on the generic defintion of atomic64_t, this
still returns long. This will be converted in a subsequent patch.

Otherwise, there should be no functional change as a result of this
patch.

Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: aou@eecs.berkeley.edu
Cc: arnd@arndb.de
Cc: bp@alien8.de
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: fenghua.yu@intel.com
Cc: heiko.carstens@de.ibm.com
Cc: herbert@gondor.apana.org.au
Cc: jhogan@kernel.org
Cc: linux@armlinux.org.uk
Cc: mpe@ellerman.id.au
Cc: palmer@sifive.com
Cc: paul.burton@mips.com
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: tony.luck@intel.com
Cc: vgupta@synopsys.com
Link: https://lkml.kernel.org/r/20190522132250.26499-5-mark.rutland@arm.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 9255813d

arch/alpha/include/asm/atomic.h

+10 −10
Original line number Diff line number Diff line
@@ -93,9 +93,9 @@ static inline int atomic_fetch_##op##_relaxed(int i, atomic_t *v) \ 
}



#define ATOMIC64_OP(op, asm_op)						\

static __inline__ void atomic64_##op(long i, atomic64_t * v)		\

static __inline__ void atomic64_##op(s64 i, atomic64_t * v)		\

{									\

	unsigned long temp;						\

	s64 temp;							\

	__asm__ __volatile__(						\

	"1:	ldq_l %0,%1\n"						\

	"	" #asm_op " %0,%2,%0\n"					\
@@ -109,9 +109,9 @@ static __inline__ void atomic64_##op(long i, atomic64_t * v) \ 
}									\



#define ATOMIC64_OP_RETURN(op, asm_op)					\

static __inline__ long atomic64_##op##_return_relaxed(long i, atomic64_t * v)	\

static __inline__ s64 atomic64_##op##_return_relaxed(s64 i, atomic64_t * v)	\

{									\

	long temp, result;						\

	s64 temp, result;						\

	__asm__ __volatile__(						\

	"1:	ldq_l %0,%1\n"						\

	"	" #asm_op " %0,%3,%2\n"					\
@@ -128,9 +128,9 @@ static __inline__ long atomic64_##op##_return_relaxed(long i, atomic64_t * v) \ 
}



#define ATOMIC64_FETCH_OP(op, asm_op)					\

static __inline__ long atomic64_fetch_##op##_relaxed(long i, atomic64_t * v)	\

static __inline__ s64 atomic64_fetch_##op##_relaxed(s64 i, atomic64_t * v)	\

{									\

	long temp, result;						\

	s64 temp, result;						\

	__asm__ __volatile__(						\

	"1:	ldq_l %2,%1\n"						\

	"	" #asm_op " %2,%3,%0\n"					\
@@ -246,9 +246,9 @@ static __inline__ int atomic_fetch_add_unless(atomic_t *v, int a, int u) 
 * Atomically adds @a to @v, so long as it was not @u.

 * Returns the old value of @v.

 */

static __inline__ long atomic64_fetch_add_unless(atomic64_t *v, long a, long u)

static __inline__ s64 atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)

{

	long c, new, old;

	s64 c, new, old;

	smp_mb();

	__asm__ __volatile__(

	"1:	ldq_l	%[old],%[mem]\n"
@@ -276,9 +276,9 @@ static __inline__ long atomic64_fetch_add_unless(atomic64_t *v, long a, long u) 
 * The function returns the old value of *v minus 1, even if

 * the atomic variable, v, was not decremented.

 */

static inline long atomic64_dec_if_positive(atomic64_t *v)

static inline s64 atomic64_dec_if_positive(atomic64_t *v)

{

	long old, tmp;

	s64 old, tmp;

	smp_mb();

	__asm__ __volatile__(

	"1:	ldq_l	%[old],%[mem]\n"

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