Messages in this thread | | | Subject | Re: [PATCH V2 2/3] Allow rwlocks to re-enable interrupts | From | Peter Zijlstra <> | Date | Thu, 27 Nov 2008 16:33:21 +0100 |
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On Thu, 2008-10-23 at 18:06 +0200, Petr Tesarik wrote: > Pass the original flags to rwlock arch-code, so that it can re-enable > interrupts if implemented for that architecture. > > Initially, make __raw_read_lock_flags and __raw_write_lock_flags > stubs which just do the same thing as non-flags variants. > > Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
> diff --git a/kernel/spinlock.c b/kernel/spinlock.c > index cf41b87..7c2f5b5 100644 > --- a/kernel/spinlock.c > +++ b/kernel/spinlock.c > @@ -121,7 +121,8 @@ unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock) > local_irq_save(flags); > preempt_disable(); > rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); > - LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock); > + LOCK_CONTENDED_FLAGS(lock, _raw_read_trylock, _raw_read_lock, > + _raw_read_lock_flags, &flags); > return flags; > } > EXPORT_SYMBOL(_read_lock_irqsave); > @@ -151,7 +152,8 @@ unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock) > local_irq_save(flags); > preempt_disable(); > rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); > - LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock); > + LOCK_CONTENDED_FLAGS(lock, _raw_write_trylock, _raw_write_lock, > + _raw_write_lock_flags, &flags); > return flags; > } > EXPORT_SYMBOL(_write_lock_irqsave); > >
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