[PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks

[firefly-linux-kernel-4.4.55.git] / include / asm-sh / spinlock.h

diff --git a/include/asm-sh/spinlock.h b/include/asm-sh/spinlock.h
index 846322d4c35d489daf86e337518dbee79f5c738f..54458fd2498150ce964e159748faac8339c1f235 100644 (file)
--- a/include/asm-sh/spinlock.h
+++ b/include/asm-sh/spinlock.h
@@ -100,4 +100,8 @@ static inline int __raw_write_trylock(raw_rwlock_t *rw)
        return 0;
 }
 
+#define _raw_spin_relax(lock)  cpu_relax()
+#define _raw_read_relax(lock)  cpu_relax()
+#define _raw_write_relax(lock) cpu_relax()
+
 #endif /* __ASM_SH_SPINLOCK_H */