[src/trunk]: src/sys/arch/usermode/dev move the (now 1024 byte) printing buff...

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

details:   https://anonhg.NetBSD.org/src/rev/df6dcf0e9c77
branches:  trunk
changeset: 772166:df6dcf0e9c77
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Wed Dec 21 11:53:07 2011 +0000

description:
move the (now 1024 byte) printing buffer off the stack

diffstat:

 sys/arch/usermode/dev/ttycons.c |  12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diffs (54 lines):

diff -r c55bfb3df81a -r df6dcf0e9c77 sys/arch/usermode/dev/ttycons.c
--- a/sys/arch/usermode/dev/ttycons.c   Wed Dec 21 10:02:45 2011 +0000
+++ b/sys/arch/usermode/dev/ttycons.c   Wed Dec 21 11:53:07 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ttycons.c,v 1.14 2011/12/21 10:02:45 reinoud Exp $ */
+/* $NetBSD: ttycons.c,v 1.15 2011/12/21 11:53:07 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2007 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ttycons.c,v 1.14 2011/12/21 10:02:45 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ttycons.c,v 1.15 2011/12/21 11:53:07 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/conf.h>
@@ -53,6 +53,7 @@
        struct tty      *sc_tty;
        void            *sc_rd_sih;
        void            *sc_ctrlc_sih;
+       u_char          sc_buf[1024];
 };
 
 dev_type_cngetc(ttycons_cngetc);
@@ -129,6 +130,7 @@
        tty_attach(sc->sc_tty);
        sc->sc_tty->t_oproc = ttycons_start;
        sc->sc_tty->t_param = ttycons_param;
+       sc->sc_tty->t_sc = sc;
 
        maj = cdevsw_lookup_major(&ttycons_cdevsw);
        cn_tab->cn_dev = makedev(maj, device_unit(self));
@@ -301,8 +303,8 @@
 static void
 ttycons_start(struct tty *t)
 {
-       u_char buf[1024+1];
-       u_char *p = buf;
+       struct ttycons_softc *sc = t->t_sc;
+       u_char *p = sc->sc_buf;
        int s, len, brem;
 
        s = spltty();
@@ -313,7 +315,7 @@
        t->t_state |= TS_BUSY;
        splx(s);
 
-       brem = q_to_b(&t->t_outq, buf, sizeof(buf) - 1);
+       brem = q_to_b(&t->t_outq, sc->sc_buf, sizeof(sc->sc_buf));
 
        while (brem > 0) {
                len = thunk_write(1, p, brem);