From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754567Ab3FONXZ (ORCPT ); Sat, 15 Jun 2013 09:23:25 -0400 Received: from mailout02.c08.mtsvc.net ([205.186.168.190]:43176 "EHLO mailout02.c08.mtsvc.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754363Ab3FONVt (ORCPT ); Sat, 15 Jun 2013 09:21:49 -0400 From: Peter Hurley To: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Jiri Slaby , Peter Hurley Subject: [PATCH v4 24/24] n_tty: Queue buffer work on any available cpu Date: Sat, 15 Jun 2013 09:14:36 -0400 Message-Id: <1371302076-4688-25-git-send-email-peter@hurleysoftware.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1371302076-4688-1-git-send-email-peter@hurleysoftware.com> References: <1366039168-8510-1-git-send-email-peter@hurleysoftware.com> <1371302076-4688-1-git-send-email-peter@hurleysoftware.com> X-Authenticated-User: 125194 peter@hurleysoftware.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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