Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Enforce the hierarchy: imp > tty > net > bio, to cater to lame PC devices.

This commit is contained in:
mycroft 1996-02-09 02:26:00 +00:00
parent 753fe3a25a
commit db070d4271
1 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
sys/arch/i386/isa/isa_machdep.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: isa_machdep.c,v 1.9 1995/12/24 02:30:15 mycroft Exp $ */
/* $NetBSD: isa_machdep.c,v 1.10 1996/02/09 02:26:00 mycroft Exp $ */
/*-
* Copyright (c) 1993, 1994 Charles Hannum.
@ -196,18 +196,18 @@ intr_calculatemasks()
imask[level] = irqs | SIR_ALLMASK;
}
#include "sl.h"
#include "ppp.h"
#if NSL > 0 || NPPP > 0
/* In the presence of SLIP or PPP, imp > tty. */
imask[IPL_IMP] |= imask[IPL_TTY];
#endif
/*
* There are tty, network and disk drivers that use free() at interrupt
* time, so imp > (tty | net | bio).
*/
imask[IPL_IMP] |= imask[IPL_TTY] | imask[IPL_NET] | imask[IPL_BIO];
/*
* There are network and disk drivers that use free() at interrupt
* time, so imp > (net | bio).
* Enforce a hierarchy that gives slow devices a better chance at not
* dropping data.
*/
imask[IPL_IMP] |= imask[IPL_NET] | imask[IPL_BIO];
imask[IPL_TTY] |= imask[IPL_NET] | imask[IPL_BIO];
imask[IPL_NET] |= imask[IPL_BIO];
/* And eventually calculate the complete masks. */
for (irq = 0; irq < ICU_LEN; irq++) {