cvs commit: src/sys/conf

Peter Jeremy peterjeremy at
Sun Sep 11 03:58:41 PDT 2005

On Sat, Sep 10, 2005 at 06:05:00PM -0700, Nate Lawson wrote:
>David E. O'Brien wrote:
>>  For HEAD, install a kernel with debug information if DEBUG is a kernel
>>  config option.  It is too easy to loose the build directory and not have
>>  symbols for kgdb to read.
>I disagree with this change.  We do not need to waste the space in /. 
>If I'm running a debug kernel, it is based on the latest version of 
>kernel.debug in my kernel compile dir and I know to find it there.

I'd agree with Nate here.  I agree that the debug kernel is worth
keeping but it's not needed in /.  If you want to install it, how
about installing it in /var/crash.

A number of people have mentioned losing the debug kernel when they do
a rebuild.  The normal reasons for doing a rebuild are either that you
have updated your source or you've changed your config.  In the former
case, the old debug kernel loses some of its validity because it no
longer matches the source code it was built from.  In the latter case,
I would suggest that the only reason to change the kernel config is if
you are planning on installing a new kernel, so again you don't need the
old debug kernel.  This just leaves the relatively small window whilst
you are building and installing the new kernel - though David has found
that this window can unfortunately be hit.

In this change intended for -current only or will it remain in 7-RELEASE?

Peter Jeremy

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