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

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

diff --git a/include/asm-powerpc/spinlock.h b/include/asm-powerpc/spinlock.h
index c31e4382a7759dba58f18f7925e675538a951e5f..eaccac8327f2d23ffbed6dbc5c303bb669f3fb60 100644 (file)
--- a/include/asm-powerpc/spinlock.h
+++ b/include/asm-powerpc/spinlock.h
@@ -285,5 +285,9 @@ static __inline__ void __raw_write_unlock(raw_rwlock_t *rw)
        rw->lock = 0;
 }
 
+#define _raw_spin_relax(lock)  cpu_relax()
+#define _raw_read_relax(lock)  cpu_relax()
+#define _raw_write_relax(lock) cpu_relax()
+
 #endif /* __KERNEL__ */
 #endif /* __ASM_SPINLOCK_H */