static int jiq_read_run_timer(char *buf, char **start, off_t offset,
int len, int *eof, void *data)
{
jiq_data.len = 0; /* prepare the argument for jiq_print() */
jiq_data.buf = buf;
jiq_data.jiffies = jiffies;
init_timer(&jiq_timer); /* init the timer structure */
jiq_timer.function = jiq_timedout;
jiq_timer.data = (unsigned long)&jiq_data;
jiq_timer.expires = jiffies + HZ; /* one second */
jiq_print(&jiq_data); /* print and go to sleep */
add_timer(&jiq_timer);
interruptible_sleep_on(&jiq_wait); /* RACE */
del_timer_sync(&jiq_timer); /* in case a signal woke us up */
*eof = 1;
return jiq_data.len;
}
static void jiq_timedout(unsigned long ptr)
{
jiq_print((void *)ptr); /* print a line */
wake_up_interruptible(&jiq_wait); /* awake the process */
}
/*
* Call jiq_print from a tasklet
*/
static void jiq_print_tasklet(unsigned long ptr)
{
if (jiq_print ((void *) ptr))
tasklet_schedule (&jiq_tasklet);
}
/*
* Call jiq_print from a tasklet
*/
static void jiq_print_tasklet(unsigned long ptr)
{
if (!jiq_print((struct clientdata *)ptr))
return;
tasklet_schedule(&jiq_tasklet);
}