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

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This commit is contained in:
jmcneill 2011-12-21 11:53:07 +00:00
parent 8a3ba0c33c
commit 5fa13b905b
1 changed files with 7 additions and 5 deletions
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12
sys/arch/usermode/dev/ttycons.c
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@ -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>
@ -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 ttycons_softc {
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 @@ ttycons_attach(device_t parent, device_t self, void *opaque)
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 @@ ttycons_ioctl(dev_t dev, u_long cmd, void *data, int flag, lwp_t *l)
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 @@ ttycons_start(struct tty *t)
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);