void schedule_usleep(unsigned long us)
{
struct fast_timer t;
wait_queue_head_t sleep_wait;
init_waitqueue_head(&sleep_wait);
D1(printk("schedule_usleep(%d)\n", us));
start_one_shot_timer(&t, wake_up_func, (unsigned long)&sleep_wait, us,
"usleep");
wait_event(sleep_wait, !fast_timer_pending(&t));
D1(printk("done schedule_usleep(%d)\n", us));
}
void schedule_usleep(unsigned long us)
{
struct fast_timer t;
wait_queue_head_t sleep_wait;
init_waitqueue_head(&sleep_wait);
D1(printk("schedule_usleep(%d)\n", us));
start_one_shot_timer(&t, wake_up_func, (unsigned long)&sleep_wait, us,
"usleep");
/* Uninterruptible sleep on the fast timer. (The condition is
* somewhat redundant since the timer is what wakes us up.) */
wait_event(sleep_wait, !fast_timer_pending(&t));
D1(printk("done schedule_usleep(%d)\n", us));
}
static inline int detach_fast_timer (struct fast_timer *t)
{
struct fast_timer *next, *prev;
if (!fast_timer_pending(t))
return 0;
next = t->next;
prev = t->prev;
if (next)
next->prev = prev;
if (prev)
prev->next = next;
else
fast_timer_list = next;
fast_timers_deleted++;
return 1;
}
