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Added handling of task pending events from scheduler.

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Previously all pending events were handled on return of exceptions
in process context. This was causing threads that run in userspace
and take no exceptions not handle their pending events indefinitely.
Now scheduler handles them in irq context as well.
This commit is contained in:
Bahadir Balban
2009-11-01 01:03:17 +02:00
parent 0f537ea1f5
commit 5fd0f12017
5 changed files with 48 additions and 23 deletions
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10
include/l4/lib/spinlock.h
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@@ -39,19 +39,21 @@ static inline void spin_unlock(struct spinlock *s)
* - To be used for synchronising against processes and irqs
* on other cpus.
*/
static inline void spin_lock_irq(struct spinlock *s)
static inline void spin_lock_irq(struct spinlock *s,
unsigned long state)
{
irq_local_disable(); /* Even in UP an irq could deadlock us */
irq_local_disable_save(&state);
#if defined(CONFIG_SMP)
__spin_lock(&s->lock);
#endif
}
static inline void spin_unlock_irq(struct spinlock *s)
static inline void spin_unlock_irq(struct spinlock *s,
unsigned long state)
{
#if defined(CONFIG_SMP)
__spin_unlock(&s->lock);
#endif
irq_local_enable();
irq_local_restore(state);
}
#endif /* __LIB__SPINLOCK_H__ */