diff options
Diffstat (limited to 'kern/sleepq.h')
| -rw-r--r-- | kern/sleepq.h | 37 |
1 files changed, 27 insertions, 10 deletions
diff --git a/kern/sleepq.h b/kern/sleepq.h index 10b139fb..72f39843 100644 --- a/kern/sleepq.h +++ b/kern/sleepq.h @@ -47,8 +47,7 @@ void sleepq_destroy(struct sleepq *sleepq); /* * Acquire/release a sleep queue. * - * Acquiring a sleep queue serializes all access and disables both - * preemption and interrupts. + * Acquiring a sleep queue serializes all access and disables preemption. * * The condition argument must be true if the synchronization object * is a condition variable. @@ -57,11 +56,22 @@ void sleepq_destroy(struct sleepq *sleepq); * return NULL if internal state shared by unrelated synchronization * objects is locked. */ -struct sleepq * sleepq_acquire(const void *sync_obj, bool condition, - unsigned long *flags); -struct sleepq * sleepq_tryacquire(const void *sync_obj, bool condition, - unsigned long *flags); -void sleepq_release(struct sleepq *sleepq, unsigned long flags); +struct sleepq * sleepq_acquire(const void *sync_obj, bool condition); +struct sleepq * sleepq_tryacquire(const void *sync_obj, bool condition); +void sleepq_release(struct sleepq *sleepq); + +/* + * Versions of the sleep queue acquisition functions that also disable + * interrupts. + */ +struct sleepq * sleepq_acquire_intr_save(const void *sync_obj, + bool condition, + unsigned long *flags); +struct sleepq * sleepq_tryacquire_intr_save(const void *sync_obj, + bool condition, + unsigned long *flags); +void sleepq_release_intr_restore(struct sleepq *sleepq, + unsigned long flags); /* * Lend/return a sleep queue. @@ -82,9 +92,16 @@ void sleepq_release(struct sleepq *sleepq, unsigned long flags); * The condition argument must be true if the synchronization object * is a condition variable. */ -struct sleepq * sleepq_lend(const void *sync_obj, bool condition, - unsigned long *flags); -void sleepq_return(struct sleepq *sleepq, unsigned long flags); +struct sleepq * sleepq_lend(const void *sync_obj, bool condition); +void sleepq_return(struct sleepq *sleepq); + +/* + * Versions of the sleep queue lending functions that also disable + * interrupts. + */ +struct sleepq * sleepq_lend_intr_save(const void *sync_obj, bool condition, + unsigned long *flags); +void sleepq_return_intr_restore(struct sleepq *sleepq, unsigned long flags); /* * Return true if the given sleep queue has no waiters. |