From 57d8d7d5f02b88c0ebca459741dcb3aa7d73918b Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Fri, 3 Jul 2009 08:30:01 -0500 Subject: serial: 8250: Call flush_to_ldisc when the irq is threaded Signed-off-by: Ingo Molnar --- drivers/tty/serial/8250.c | 2 ++ drivers/tty/tty_buffer.c | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250.c index 43f7f4692b4f..687b1ad0cade 100644 --- a/drivers/tty/serial/8250.c +++ b/drivers/tty/serial/8250.c @@ -1631,12 +1631,14 @@ static irqreturn_t serial8250_interrupt(int irq, void *dev_id) l = l->next; +#ifndef CONFIG_PREEMPT_RT_FULL if (l == i->head && pass_counter++ > PASS_LIMIT) { /* If we hit this, we're dead. */ printk_ratelimited(KERN_ERR "serial8250: too much work for irq%d\n", irq); break; } +#endif } while (l != end); spin_unlock(&i->lock); diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index 6c9b7cd6778a..a56c2231fed3 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -493,10 +493,14 @@ void tty_flip_buffer_push(struct tty_struct *tty) tty->buf.tail->commit = tty->buf.tail->used; spin_unlock_irqrestore(&tty->buf.lock, flags); +#ifndef CONFIG_PREEMPT_RT_FULL if (tty->low_latency) flush_to_ldisc(&tty->buf.work); else schedule_work(&tty->buf.work); +#else + flush_to_ldisc(&tty->buf.work); +#endif } EXPORT_SYMBOL(tty_flip_buffer_push); -- cgit v1.2.3