From 4e4bea7427062ec15df7084f97728e2a44d912e3 Mon Sep 17 00:00:00 2001
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Date: Thu, 11 May 2017 15:33:23 -0700
Subject: [PATCH] rcu: Remove typecheck() from RCU locking wrapper functions
Because raw_spin_lock_irqsave() and raw_spin_unlock_irqrestore()
both do typecheck() on their flags argument, there is no point in
duplicating this check in raw_spin_lock_irqsave_rcu_node() and
raw_spin_unlock_irqrestore_rcu_node(). This commit therefore saves
a few lines by removing this duplicated check.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
kernel/rcu/rcu.h | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h
index 2a75beb883c80..bc55b5716c37d 100644
--- a/kernel/rcu/rcu.h
+++ b/kernel/rcu/rcu.h
@@ -334,18 +334,14 @@ do { \
#define raw_spin_unlock_irq_rcu_node(p) \
raw_spin_unlock_irq(&ACCESS_PRIVATE(p, lock))
-#define raw_spin_lock_irqsave_rcu_node(rnp, flags) \
+#define raw_spin_lock_irqsave_rcu_node(p, flags) \
do { \
- typecheck(unsigned long, flags); \
- raw_spin_lock_irqsave(&ACCESS_PRIVATE(rnp, lock), flags); \
+ raw_spin_lock_irqsave(&ACCESS_PRIVATE(p, lock), flags); \
smp_mb__after_unlock_lock(); \
} while (0)
-#define raw_spin_unlock_irqrestore_rcu_node(rnp, flags) \
-do { \
- typecheck(unsigned long, flags); \
- raw_spin_unlock_irqrestore(&ACCESS_PRIVATE(rnp, lock), flags); \
-} while (0)
+#define raw_spin_unlock_irqrestore_rcu_node(p, flags) \
+ raw_spin_unlock_irqrestore(&ACCESS_PRIVATE(p, lock), flags) \
#define raw_spin_trylock_rcu_node(p) \
({ \