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 <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
kyagi · Nov 28, 2013 · 14058d2 · 14058d2
1 parent dad3375
commit 14058d2
Showing 1 changed file with 1 addition and 8 deletions.
diff --git a/lib/lockref.c b/lib/lockref.c
@@ -1,5 +1,6 @@
 #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.