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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-05-11 15:33:23 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-06-08 18:52:40 -0700 |
| commit | 4e4bea7427062ec15df7084f97728e2a44d912e3 (patch) | |
| tree | 8ac0858e9d8f945cca18d4fefaef8ae11b74aa46 /kernel/rcu | |
| parent | d2b1654f91f9e928011fbea7138854ee2044f470 (diff) | |
| download | linux-4e4bea7427062ec15df7084f97728e2a44d912e3.tar.gz linux-4e4bea7427062ec15df7084f97728e2a44d912e3.tar.bz2 linux-4e4bea7427062ec15df7084f97728e2a44d912e3.zip | |
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.h | 12 |
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) \ ({ \ |