/*
* t_oproc for this driver; called from within the line discipline
*
* Locks: Assumes tp is locked on entry, remains locked on exit
*/
static void
kmstart(struct tty *tp)
{
if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))
goto out;
if (tp->t_outq.c_cc == 0)
goto out;
tp->t_state |= TS_BUSY;
if (tp->t_outq.c_cc > tp->t_lowat) {
/*
* Start immediately.
*/
kmoutput(tp);
} else {
/*
* Wait a bit...
*/
#if 0
/* FIXME */
timeout(kmtimeout, tp, hz);
#else
kmoutput(tp);
#endif
}
return;
out:
(*linesw[tp->t_line].l_start) (tp);
return;
}
static void
kmstart(
struct tty *tp)
{
extern int hz;
if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))
goto out;
if (tp->t_outq.c_cc == 0)
goto out;
tp->t_state |= TS_BUSY;
if (tp->t_outq.c_cc > tp->t_lowat) {
/*
* Start immediately.
*/
kmoutput(tp);
}
else {
/*
* Wait a bit...
*/
#if 0
/* FIXME */
timeout(kmtimeout, tp, hz);
#else
kmoutput(tp);
#endif
}
out:
ttwwakeup(tp);
}
/*
* One-shot output retry timeout from kmoutput(); re-calls kmoutput() at
* intervals until the output queue for the tty is empty, at which point
* the timeout is not rescheduled by kmoutput()
*
* This function must take the tty_lock() around the kmoutput() call; it
* ignores the return value.
*/
static void kmtimeout(void *arg)
{
struct tty *tp = (struct tty *) arg;
tty_lock(tp);
(void) kmoutput(tp);
tty_unlock(tp);
}
static void
kmtimeout(struct tty *tp)
{
boolean_t funnel_state;
funnel_state = thread_funnel_set(kernel_flock, TRUE);
kmoutput(tp);
(void) thread_funnel_set(kernel_flock, funnel_state);
}
/*
* t_oproc for this driver; called from within the line discipline
*
* Locks: Assumes tp is locked on entry, remains locked on exit
*/
static void kmstart(struct tty *tp)
{
if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP))
goto out;
if (tp->t_outq.c_cc == 0)
goto out;
tp->t_state |= TS_BUSY;
kmoutput(tp);
return;
out:
(*linesw[tp->t_line].l_start) (tp);
return;
}
