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frv: Define cpu_relax_lowlatency() 

3a6bfbc91d "(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>
hifive-unleashed-5.1
Davidlohr Bueso 2014-08-18 13:00:39 -07:00 committed by Linus Torvalds
parent 7d1311b93e
commit f325f1643a
1 changed files with 2 additions and 1 deletions
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3
arch/frv/include/asm/processor.h
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@ -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