Changes in kernel/generic/src/synch/waitq.c [3954961e:9d58539] in mainline

File:

• kernel/generic/src/synch/waitq.c (modified) (1 diff)

kernel/generic/src/synch/waitq.c

@@ -442 +442 @@
         irq_spinlock_unlock(&wq->lock, true);
 }
-
-/** If there is a wakeup in progress actively waits for it to complete.
- * 
- * The function returns once the concurrently running waitq_wakeup()
- * exits. It returns immediately if there are no concurrent wakeups 
- * at the time.
- * 
- * Example usage:
- * @code
- * void callback(waitq *wq)
- * {
- *     // Do something and notify wait_for_completion() that we're done.
- *     waitq_wakeup(wq);
- * }
- * void wait_for_completion(void) 
- * {
- *     waitq wg;
- *     waitq_initialize(&wq);
- *     // Run callback() in the background, pass it wq.
- *     do_asynchronously(callback, &wq);
- *     // Wait for callback() to complete its work.
- *     waitq_sleep(&wq);
- *     // callback() completed its work, but it may still be accessing 
- *     // wq in waitq_wakeup(). Therefore it is not yet safe to return 
- *     // or it would clobber up our stack (where wq is stored).
- *     waitq_complete_wakeup(&wq);
- *     // waitq_wakeup() is complete, it is safe to free wq.
- * }
- * @endcode
- * 
- * @param wq  Pointer to a wait queue.
- */
-void waitq_complete_wakeup(waitq_t *wq)
-{
-        irq_spinlock_lock(&wq->lock, true);
-        irq_spinlock_unlock(&wq->lock, true);
-}
-
 
 /** Internal SMP- and IRQ-unsafe version of waitq_wakeup()