Commit 14058d20 authored by Will Deacon's avatar Will Deacon Committed by Linus Torvalds
Browse files

lockref: include mutex.h rather than reinvent arch_mutex_cpu_relax 



arch_mutex_cpu_relax is already conditionally defined in mutex.h, so
simply include that header rather than replicate the code here.

Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent dad33750

lib/lockref.c

+1 −8
Original line number Diff line number Diff line 
#include <linux/export.h>

#include <linux/lockref.h>

#include <linux/mutex.h>



#if USE_CMPXCHG_LOCKREF
@@ -11,14 +12,6 @@ 
# define cmpxchg64_relaxed cmpxchg64

#endif



/*

 * Allow architectures to override the default cpu_relax() within CMPXCHG_LOOP.

 * This is useful for architectures with an expensive cpu_relax().

 */

#ifndef arch_mutex_cpu_relax

# define arch_mutex_cpu_relax() cpu_relax()

#endif



/*

 * Note that the "cmpxchg()" reloads the "old" value for the

 * failure case.