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Commit 31b35f6b authored by Dmitry Vyukov's avatar Dmitry Vyukov Committed by Ingo Molnar
Browse files

locking/x86: Remove the unused atomic_inc_short() methd 



It is completely unused and implemented only on x86.
Remove it.

Suggested-by: default avatarMark Rutland <mark.rutland@arm.com>
Signed-off-by: default avatarDmitry Vyukov <dvyukov@google.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170526172900.91058-1-dvyukov@google.com


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent e58e871b

arch/tile/lib/atomic_asm_32.S

+1 −2
Original line number Diff line number Diff line
@@ -24,8 +24,7 @@ 
 * has an opportunity to return -EFAULT to the user if needed.

 * The 64-bit routines just return a "long long" with the value,

 * since they are only used from kernel space and don't expect to fault.

 * Support for 16-bit ops is included in the framework but we don't provide

 * any (x86_64 has an atomic_inc_short(), so we might want to some day).

 * Support for 16-bit ops is included in the framework but we don't provide any.

 *

 * Note that the caller is advised to issue a suitable L1 or L2

 * prefetch on the address being manipulated to avoid extra stalls.

arch/x86/include/asm/atomic.h

+0 −13
Original line number Diff line number Diff line
@@ -246,19 +246,6 @@ static __always_inline int __atomic_add_unless(atomic_t *v, int a, int u) 
	return c;

}



/**

 * atomic_inc_short - increment of a short integer

 * @v: pointer to type int

 *

 * Atomically adds 1 to @v

 * Returns the new value of @u

 */

static __always_inline short int atomic_inc_short(short int *v)

{

	asm(LOCK_PREFIX "addw $1, %0" : "+m" (*v));

	return *v;

}



#ifdef CONFIG_X86_32

# include <asm/atomic64_32.h>

#else