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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>
This commit is contained in:
Paul E. McKenney 2017-05-11 15:33:23 -07:00
parent d2b1654f91
commit 4e4bea7427
1 changed files with 4 additions and 8 deletions
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12
kernel/rcu/rcu.h
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@ -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) \
({ \