diff options
Diffstat (limited to 'kern/sleepq.h')
| -rw-r--r-- | kern/sleepq.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/kern/sleepq.h b/kern/sleepq.h index aeeb94b7..e1f7863b 100644 --- a/kern/sleepq.h +++ b/kern/sleepq.h @@ -63,13 +63,15 @@ void sleepq_destroy(struct sleepq *sleepq); /* * Acquire/release a sleep queue. * - * Acquiring a sleep queue serializes all access and disables preemption. + * Acquiring a sleep queue serializes all access and disables both + * preemption and interrupts. * * The condition argument must be true if the synchronization object * is a condition variable. */ -struct sleepq * sleepq_acquire(const void *sync_obj, bool condition); -void sleepq_release(struct sleepq *sleepq); +struct sleepq * sleepq_acquire(const void *sync_obj, bool condition, + unsigned long *flags); +void sleepq_release(struct sleepq *sleepq, unsigned long flags); /* * Lend/return a sleep queue. @@ -90,8 +92,9 @@ void sleepq_release(struct sleepq *sleepq); * The condition argument must be true if the synchronization object * is a condition variable. */ -struct sleepq * sleepq_lend(const void *sync_obj, bool condition); -void sleepq_return(struct sleepq *sleepq); +struct sleepq * sleepq_lend(const void *sync_obj, bool condition, + unsigned long *flags); +void sleepq_return(struct sleepq *sleepq, unsigned long flags); /* * Return true if the given sleep queue has no waiters. @@ -120,6 +123,7 @@ void sleepq_wait(struct sleepq *sleepq, const char *wchan); * Wake up a thread waiting on the given sleep queue, if any. * * The sleep queue must be acquired when calling this function. + * A sleep queue may be signalled from interrupt context. * * Since a sleep queue must be lent (and in turn is automatically * acquired) when waiting, and acquired in order to signal it, |