[PATCH V9 05/15] asm-generic: spinlock: Add queued spinlock support in common header

[guoren at kernel.org]

From: Guo Ren <guoren at linux.alibaba.com>

Select queued spinlock or ticket lock by CONFIG_QUEUED_SPINLOCKS in
the common header file. Define smp_mb__after_spinlock with smp_mb()
as default.

Signed-off-by: Guo Ren <guoren at linux.alibaba.com>
Signed-off-by: Guo Ren <guoren at kernel.org>
---
 include/asm-generic/spinlock.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/asm-generic/spinlock.h b/include/asm-generic/spinlock.h
index 6f5a1b838ca2..349cdb46a99c 100644
--- a/include/asm-generic/spinlock.h
+++ b/include/asm-generic/spinlock.h
@@ -3,7 +3,11 @@
 #ifndef __ASM_GENERIC_SPINLOCK_H
 #define __ASM_GENERIC_SPINLOCK_H
 
+#ifdef CONFIG_QUEUED_SPINLOCKS
+#include <asm-generic/qspinlock.h>
+#else
 #include <asm-generic/ticket_spinlock.h>
+#endif
 #include <asm/qrwlock.h>
 
 /* See include/linux/spinlock.h */
-- 
2.36.1