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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-05-11 15:33:23 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-06-08 18:52:40 -0700
commit4e4bea7427062ec15df7084f97728e2a44d912e3 (patch)
tree8ac0858e9d8f945cca18d4fefaef8ae11b74aa46 /kernel/rcu
parentd2b1654f91f9e928011fbea7138854ee2044f470 (diff)
downloadlinux-4e4bea7427062ec15df7084f97728e2a44d912e3.tar.bz2
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>
Diffstat (limited to 'kernel/rcu')
-rw-r--r--kernel/rcu/rcu.h12
1 files changed, 4 insertions, 8 deletions
diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h
index 2a75beb883c8..bc55b5716c37 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) \
({ \