Date: Mon, 28 Dec 1998 15:03:01 -0800 (PST) From: Michael Smith <msmith@FreeBSD.ORG> To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: cvs commit: src/sys/i386/i386 db_interface.c trap.c src/sys/kern kern_shutdown.c Message-ID: <199812282303.PAA16566@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
msmith 1998/12/28 15:03:01 PST
Modified files:
sys/i386/i386 db_interface.c trap.c
sys/kern kern_shutdown.c
Log:
Improved DDB_UNATTENDED behaviour. From the submitter:
There's something that's been bugging me for a while, so I decided to fix it.
FreeBSD now will DTRT WRT DDB and DDB_UNATTENDED (!debugger_on_panic), at least
in my opinion. The behavior change is such that:
1. Nothing changes when debugger_on_panic != 0.
2. When DDB_UNATTENDED (!debugger_on_panic), if a panic occurs, the
machine will reboot. Also, if a trap occurs, the machine will
panic and reboot, unlike how it broke to DDB before. HOWEVER,
a trap inside DDB will not cause a panic, allowing full use
of DDB without having to worry about the machine being stuck
at a DDB prompt if something goes wrong during the day.
Patches for this behavior follow my signature, and it would
be a boon to anyone (like me) who uses DDB_UNATTENDED, but
actually wants the machine to panic on a trap (otherwise,
what's the use, if the machine causes a fatal trap rather than
a true panic, of debugger_on_panic?). The changes cause no
adverse behavior, but do involve two symbols becoming global
Submitted by: Brian Feldman <green@unixhelp.org>
Revision Changes Path
1.43 +3 -2 src/sys/i386/i386/db_interface.c
1.132 +6 -2 src/sys/i386/i386/trap.c
1.44 +3 -3 src/sys/kern/kern_shutdown.c
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199812282303.PAA16566>