[src/trunk]: src/sys/dev Increase the priority of the mixing thread to improv...

[nat <nat%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f5666ecdefd7
branches:  trunk
changeset: 352849:f5666ecdefd7
user:      nat <nat%NetBSD.org@localhost>
date:      Wed Apr 12 14:21:12 2017 +0000

description:
Increase the priority of the mixing thread to improve performace under
load.

This should address PR kern/52098.

diffstat:

 sys/dev/audio.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (30 lines):

diff -r 54ff22d8d017 -r f5666ecdefd7 sys/dev/audio.c
--- a/sys/dev/audio.c   Wed Apr 12 14:15:50 2017 +0000
+++ b/sys/dev/audio.c   Wed Apr 12 14:21:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: audio.c,v 1.322 2017/04/12 14:15:50 nat Exp $  */
+/*     $NetBSD: audio.c,v 1.323 2017/04/12 14:21:12 nat Exp $  */
 
 /*-
  * Copyright (c) 2016 Nathanial Sloss <nathanialsloss%yahoo.com.au@localhost>
@@ -148,7 +148,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.322 2017/04/12 14:15:50 nat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.323 2017/04/12 14:21:12 nat Exp $");
 
 #include "audio.h"
 #if NAUDIO > 0
@@ -882,9 +882,9 @@
 #ifdef AUDIO_PM_IDLE
        callout_schedule(&sc->sc_idle_counter, audio_idle_timeout * hz);
 #endif
-       kthread_create(PRI_NONE, KTHREAD_MPSAFE | KTHREAD_MUSTJOIN, NULL,
+       kthread_create(PRI_BIO, KTHREAD_MPSAFE | KTHREAD_MUSTJOIN, NULL,
            audio_rec_thread, sc, &sc->sc_recthread, "audiorec");
-       kthread_create(PRI_NONE, KTHREAD_MPSAFE | KTHREAD_MUSTJOIN, NULL,
+       kthread_create(PRI_BIO, KTHREAD_MPSAFE | KTHREAD_MUSTJOIN, NULL,
            audio_play_thread, sc, &sc->sc_playthread, "audiomix");
        audiorescan(self, "audio", NULL);
 }