[PATCH v4 24/24] n_tty: Queue buffer work on any available cpu

From: Peter Hurley
Date: Sat Jun 15 2013 - 09:23:29 EST


Scheduling buffer work on the same cpu as the read() thread
limits the parallelism now possible between the receive_buf path
and the n_tty_read() path.

Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
---
drivers/tty/n_tty.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 072e52f..2321d6a 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -198,7 +198,7 @@ static void n_tty_set_room(struct tty_struct *tty)
*/
WARN_RATELIMIT(test_bit(TTY_LDISC_HALTED, &tty->flags),
"scheduling buffer work for halted ldisc\n");
- schedule_work(&tty->port->buf.work);
+ queue_work(system_unbound_wq, &tty->port->buf.work);
}
}

--
1.8.1.2

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