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Commit 992b9592 authored by Harvey Harrison's avatar Harvey Harrison Committed by Ingo Molnar
Browse files

x86: fix asm memory constraints in local_64.h 



Use the shorter +m form rather than =m and m.

Signed-off-by: default avatarHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 4ad02718

include/asm-x86/local_64.h

+14 −16
Original line number Diff line number Diff line
@@ -5,32 +5,30 @@ static inline void local_inc(local_t *l) 
{

	__asm__ __volatile__(

		"incq %0"

		:"=m" (l->a.counter)

		:"m" (l->a.counter));

		:"+m" (l->a.counter));

}



static inline void local_dec(local_t *l)

{

	__asm__ __volatile__(

		"decq %0"

		:"=m" (l->a.counter)

		:"m" (l->a.counter));

		:"+m" (l->a.counter));

}



static inline void local_add(long i, local_t *l)

{

	__asm__ __volatile__(

		"addq %1,%0"

		:"=m" (l->a.counter)

		:"ir" (i), "m" (l->a.counter));

		:"+m" (l->a.counter)

		:"ir" (i));

}



static inline void local_sub(long i, local_t *l)

{

	__asm__ __volatile__(

		"subq %1,%0"

		:"=m" (l->a.counter)

		:"ir" (i), "m" (l->a.counter));

		:"+m" (l->a.counter)

		:"ir" (i));

}



/**
@@ -48,8 +46,8 @@ static inline int local_sub_and_test(long i, local_t *l) 


	__asm__ __volatile__(

		"subq %2,%0; sete %1"

		:"=m" (l->a.counter), "=qm" (c)

		:"ir" (i), "m" (l->a.counter) : "memory");

		:"+m" (l->a.counter), "=qm" (c)

		:"ir" (i) : "memory");

	return c;

}
@@ -67,8 +65,8 @@ static inline int local_dec_and_test(local_t *l) 


	__asm__ __volatile__(

		"decq %0; sete %1"

		:"=m" (l->a.counter), "=qm" (c)

		:"m" (l->a.counter) : "memory");

		:"+m" (l->a.counter), "=qm" (c)

		: : "memory");

	return c != 0;

}
@@ -86,8 +84,8 @@ static inline int local_inc_and_test(local_t *l) 


	__asm__ __volatile__(

		"incq %0; sete %1"

		:"=m" (l->a.counter), "=qm" (c)

		:"m" (l->a.counter) : "memory");

		:"+m" (l->a.counter), "=qm" (c)

		: : "memory");

	return c != 0;

}
@@ -106,8 +104,8 @@ static inline int local_add_negative(long i, local_t *l) 


	__asm__ __volatile__(

		"addq %2,%0; sets %1"

		:"=m" (l->a.counter), "=qm" (c)

		:"ir" (i), "m" (l->a.counter) : "memory");

		:"+m" (l->a.counter), "=qm" (c)

		:"ir" (i) : "memory");

	return c;

}