frv: Define cpu_relax_lowlatency()
authorDavidlohr Bueso <dave@stgolabs.net>
Mon, 18 Aug 2014 20:00:39 +0000 (13:00 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 19 Aug 2014 14:40:08 +0000 (09:40 -0500)
3a6bfbc91df0 "(arch,locking: Ciao arch_mutex_cpu_relax()") broke
building the frv arch.  Fixes errors such as:

  kernel/locking/mcs_spinlock.h:87:2: error: implicit declaration of function 'cpu_relax_lowlatency'

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Compile-tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/frv/include/asm/processor.h

index a34f309e580199b5f573db3f975a199cd74d5372..6554e78893f26bc88e96e103811e1f0881a3a5ca 100644 (file)
@@ -129,7 +129,8 @@ unsigned long get_wchan(struct task_struct *p);
 #define        KSTK_EIP(tsk)   ((tsk)->thread.frame0->pc)
 #define        KSTK_ESP(tsk)   ((tsk)->thread.frame0->sp)
 
-#define cpu_relax()    barrier()
+#define cpu_relax() barrier()
+#define cpu_relax_lowlatency() cpu_relax()
 
 /* data cache prefetch */
 #define ARCH_HAS_PREFETCH