Re: Learning about the Kernal

Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!us.feeder.erje.net!nntp.club.cc.cmu.edu!micro-heart-of-gold.mit.edu!bloom-beacon.mit.edu!bloom-beacon.mit.edu!panix!not-for-mail
From	ruben safir <ruben@mrbrklyn.com>
Newsgroups	comp.os.linux.misc
Subject	Re: Learning about the Kernal
Date	Mon, 20 Apr 2015 09:44:42 -0400
Organization	PANIX Public Access Internet and UNIX, NYC
Lines	62
Message-ID	<mh2vsa$c7u$1@reader1.panix.com> (permalink)
References	<me2i1v$keo$1@reader1.panix.com> <me3ls4$gvu$1@news.httrack.net> <me4so7$oi1$1@reader1.panix.com> <me81mm$iob$2@dont-email.me> <me8dl2$hht$4@reader1.panix.com> <mearpr$8uv$1@dont-email.me> <mejb6f$evu$5@reader1.panix.com> <mekjno$nhb$1@dont-email.me> <mekkcf$evu$13@reader1.panix.com> <men7a8$d6a$1@dont-email.me> <meo7ik$n6i$1@reader1.panix.com> <mept04$ks$1@dont-email.me> <met89k$k84$8@reader1.panix.com> <mev7jb$it0$1@dont-email.me>
NNTP-Posting-Host	www.mrbrklyn.com
Mime-Version	1.0
Content-Type	text/plain; charset=windows-1252
Content-Transfer-Encoding	7bit
X-Trace	reader1.panix.com 1429537482 12542 96.57.23.82 (20 Apr 2015 13:44:42 GMT)
X-Complaints-To	abuse@panix.com
NNTP-Posting-Date	Mon, 20 Apr 2015 13:44:42 +0000 (UTC)
User-Agent	Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0
In-Reply-To	<mev7jb$it0$1@dont-email.me>
Xref	csiph.com comp.os.linux.misc:14595

Show key headers only | View raw

On 03/25/2015 04:59 PM, Jerry Peters wrote:
> ruben safir <dont@email.me> wrote:
>> On Mon, 23 Mar 2015 20:27:48 +0000, Jerry Peters wrote:
>>
>>
>>> If you're going to hack the scheduler you really need to get used to
>>> trying, and perhaps breaking things.
>>
>> yep, yep... that is exactly why I am asking about set ups.  
>>
>>
>>
> 
> Grub resolves the configuration at boot time unlike lilo which saves
> disk addresses when you run /sbin/lilo. That means that if you use
> symlinks they are resolved at *boot* time. So if you use symlinks in
> grub.cfg, and change the symlink, grub will see the new kernel when it
> boots. Thus you just change the symlink to point to your new kernel,
> no need for update-grub. In fact, installkernel can change the symlink
> for you when you do 'make install'.
> 
> So you either edit grub.cfg to add additional menuentries for your new
> kernels, or you can add something like:
> 
> cat <<-EOF
> 	menuentry {
> 		kernel ...
> 		initrd ... ( if you're using an initrd)
> 		}
> EOF
> 
> to the scripts in /etc/grub (I think this is correct, the update-grub
> script redirects stdout to the config file it's writing).
> 
> With the symlinks there's no need to regenerate grub.cfg every time
> you change the kernel, and you can keep multiple kernels around. 
> 
> I store each kernel in a directory in /boot, along with its config and
> an initrd if needed. Keeps /boot relatively uncluttered and means I
> can remove the kernel & everything associated with it with an rm -r
> /{boot,lib/modules}/<kernel version>.
> 
> So my symlinks point to the directory and the config would contain:
> 	kernel /boot/test/bzImage ...
> 	initrd /boot/test/initrd.cgz
> 
> Where test is (currently):
> lrwxrwxrwx 1 root root 6 Mar 22 15:47 /boot/test -> 3.19.2/
> 
> and /boot/3.19.2 is:
> System.map  bzImage  config  version  vmlinux*
> 
> /root/bin/installkernel creates & populates the directory when I do
> the 'make install' and also sets up the test symlink.
> 
> BTW, have you looked at linux/Documentation, there's a lot of useful
> information in there, especially about the build process.
> 
> 
> 
> 
Been pouring over ... and it has changed a bit over the years.

Thread

Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-14 19:59 -0400
  Re: Learning about the Kernal Xavier Roche <xroche@free.fr.NOSPAM.invalid> - 2015-03-15 11:11 +0100
    Re: Learning about the Kernal ruben <nowhere@nowhere.nor> - 2015-03-15 21:14 +0000
      Re: Learning about the Kernal Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2015-03-16 10:02 +0200
        Re: Learning about the Kernal Ruben Safir <mrbrklyn@panix.com> - 2015-03-17 00:18 +0000
          Re: Learning about the Kernal Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2015-03-16 20:53 -0700
            Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 05:14 +0000
            Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 05:23 +0000
      Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-16 21:58 -0400
        Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 05:21 +0000
          Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-17 10:51 +0000
          Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-17 09:10 -0400
            Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-17 14:12 -0400
              Re: Learning about the Kernal William Unruh <unruh@invalid.ca> - 2015-03-17 19:03 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 19:08 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-17 15:17 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-20 01:06 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-19 23:52 -0400
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-20 10:52 +0000
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-20 20:33 +0000
                Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-04-20 09:48 -0400
              Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-17 15:08 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-18 03:36 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-18 10:09 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-20 01:04 +0000
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-20 10:58 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-20 09:22 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-20 18:39 +0000
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-20 20:04 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-20 21:10 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 05:03 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-20 18:42 +0000
                Re: Learning about the Kernal Dan Espen <despen@verizon.net> - 2015-03-20 15:31 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 05:13 +0000
                Re: Learning about the Kernal The Natural Philosopher <tnp@invalid.invalid> - 2015-03-21 09:13 +0000
                Re: Learning about the Kernal ruben <nowhere@nowhere.nor> - 2015-03-21 14:40 +0000
                Re: Learning about the Kernal Michael Black <et472@ncf.ca> - 2015-03-21 12:20 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 19:54 +0000
                Re: Learning about the Kernal Baho Utot <baho-utot@columbus.rr.com> - 2015-03-21 17:56 -0400
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 19:56 +0000
                Re: Learning about the Kernal Richard Kettlewell <rjk@greenend.org.uk> - 2015-03-21 16:18 +0000
          Re: Learning about the Kernal Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2015-03-17 16:10 +0200
            Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-17 14:06 -0400
              Re: Learning about the Kernal William Unruh <unruh@invalid.ca> - 2015-03-17 19:00 +0000
                Re: Learning about the Kernal Tim Watts <tw_usenet@dionic.net> - 2015-03-17 19:05 +0000
                Re: Learning about the Kernal Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2015-03-17 14:17 -0700
                Re: Learning about the Kernal William Unruh <unruh@invalid.ca> - 2015-03-19 06:04 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 08:45 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 08:20 +0000
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-21 16:09 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 20:10 +0000
              Re: Learning about the Kernal Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2015-03-17 22:39 +0200
          Re: Learning about the Kernal Chick Tower <c.tower@deadspam.com> - 2015-03-18 03:35 +0000
            Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 08:47 +0000
              Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-21 20:19 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-21 20:30 +0000
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-22 20:05 +0000
                Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-23 01:16 -0400
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-23 20:27 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-25 02:57 +0000
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-25 02:59 +0000
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-25 20:59 +0000
                Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-04-20 09:44 -0400
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 00:07 +0100
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-22 00:07 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 01:13 +0100
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-22 03:11 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 04:20 +0100
                Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-22 13:19 +0000
                Re: Learning about the Kernal Rich <rich@example.invalid> - 2015-03-22 15:13 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 21:52 +0100
                Re: Learning about the Kernal Jerry Peters <jerry@example.invalid> - 2015-03-22 20:13 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-22 22:01 +0100
              Re: Learning about the Kernal Chick Tower <c.tower@deadspam.com> - 2015-03-23 04:02 +0000
                Re: Learning about the Kernal Aragorn <thorongil@telenet.be.invalid> - 2015-03-23 05:13 +0100
                Re: Learning about the Kernal ruben <ceo@iran.gov> - 2015-04-12 13:03 +0000
      Re: Learning about the Kernal ruben safir <dont@email.me> - 2015-03-17 05:18 +0000
      Re: Learning about the Kernal ruben safir <ruben@mrbrklyn.com> - 2015-03-17 01:52 -0400

csiph-web