Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4e4bea74 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

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: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent d2b1654f

kernel/rcu/rcu.h

+4 −8
Original line number Diff line number Diff line
@@ -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)					\

({									\