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

[linux.git] / include / asm-sparc64 / spinlock.h

diff --git a/include/asm-sparc64/spinlock.h b/include/asm-sparc64/spinlock.h
index bd5ffc76bc7e6774274b596ca8b43154c894ed08..0006fe9f8c7a03cab556cec5119ad5c016608e74 100644 (file)
--- a/include/asm-sparc64/spinlock.h
+++ b/include/asm-sparc64/spinlock.h
@@ -241,6 +241,10 @@ static int inline __write_trylock(raw_rwlock_t *lock)
 #define __raw_read_can_lock(rw)                (!((rw)->lock & 0x80000000UL))
 #define __raw_write_can_lock(rw)       (!(rw)->lock)
 
+#define _raw_spin_relax(lock)  cpu_relax()
+#define _raw_read_relax(lock)  cpu_relax()
+#define _raw_write_relax(lock) cpu_relax()
+
 #endif /* !(__ASSEMBLY__) */
 
 #endif /* !(__SPARC64_SPINLOCK_H) */