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: Will Deacon <will.deacon@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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: Will Deacon <will.deacon@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Will Deacon · Linus Torvalds
1 parent dad337501d
Showing 1 changed file with 1 additions and 8 deletions Side-by-side Diff
lib/lockref.c
 #include <linux/export.h>
 #include <linux/lockref.h>
+#include <linux/mutex.h>
  
 #if USE_CMPXCHG_LOCKREF
  
@@ -9,14 +10,6 @@
  */
 #ifndef cmpxchg64_relaxed
 # 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
  
 /*
1	1	#include <linux/export.h>
2	2	#include <linux/lockref.h>
	3	+#include <linux/mutex.h>
3	4
4	5	#if USE_CMPXCHG_LOCKREF
5	6
...	...	@@ -9,14 +10,6 @@
9	10	*/
10	11	#ifndef cmpxchg64_relaxed
11	12	# define cmpxchg64_relaxed cmpxchg64
12		-#endif
13		-
14		-/*
15		- * Allow architectures to override the default cpu_relax() within CMPXCHG_LOOP.
16		- * This is useful for architectures with an expensive cpu_relax().
17		- */
18		-#ifndef arch_mutex_cpu_relax
19		-# define arch_mutex_cpu_relax() cpu_relax()
20	13	#endif
21	14
22	15	/*