Master Kernel Thread

[stevenpusser]

What are 4096 processors? Mine is an Opteron-165 dual core, 939-pin..

Four thousand and ninety-six CPU "farms"--some of these guys have serious hardware!

Also, it appears kernel.org has removed the pages that Kernelcheck was parsing to get the kernel versions on August 26th, switching to some xml based RSS feed.

I've managed to kludge a version of the app that uses internal (local) versions of the HTML files to build a 2.6.31 kernel, but I need to work on those files some more to get them working better than the Frankenstein lurch they do now.

[Lockheed]

I am trying to compile newest kernel (2.6.31) and use powertop but to do that, I need to enable CONFIG_TIMER_STATS before compilation.

However, I this option is nowhere to be found under xconfig, nor in the .config file itself.

Why?

[exww]

the guide gave me several files in boot folder , since i dont use grub , the lilo didnt update itself so what file is the real kernel that i should boot from?

first :

is an archive
initrd.img-2.6.30.5-mk-xxxx-std-ipv4-64
file in it: initrd.img-2.6.30

second :
vmlinuz-2.6.30.5-mk-xxxx-std-ipv4-64

third :

System.map-2.6.30.5-mk-xxxx-std-ipv4-64

fourth:

config-2.6.30.5-mk-xxxx-std-ipv4-64

edit: installed grub and it sorted everything

[Dizzle7677]

Also, it appears kernel.org has removed the pages that Kernelcheck was parsing to get the kernel versions on August 26th, switching to some xml based RSS feed.

I've managed to kludge a version of the app that uses internal (local) versions of the HTML files to build a 2.6.31 kernel, but I need to work on those files some more to get them working better than the Frankenstein lurch they do now.

If you come up with a hack for the main.py script in KCheck to parse the rss xml feed .. feel free to post it here.

[dk75]

http://www.feedparser.org/
Install it ( throught Synaptic - "python-feedparser" ) and it gives you function to parse RSS.

Sample code:

#! /usr/bin/env python
# -*- coding: utf-8 -*-
##############################################################
# parse RSS feed
# RSS.py rss.url no._of_entry_to_parse
##############################################################

import sys
import feedparser
d = feedparser.parse(sys.argv[1])
print
print d.entries[int(sys.argv[2])].title
print
print d.entries[int(sys.argv[2])].description
print
quit()

using:

#:~ RSS.py http://www.kernel.org/kdist/rss.xml 0

next-20090925: linux-next

<table>

<tr align="left">
    <td>linux-next:</td>
    <td><strong>next-20090925</strong></td>
    <td>2009-09-25</td>
    <td></td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.31-next-20090925.bz2">Patch</a>]</td>
    <td>[<a href="http://www.kernel.org/diff/diffview.cgi?file=/pub/linux/kernel/v2.6/next/patch-v2.6.31-next-20090925.bz2">View Patch</a>]</td>
    <td></td>
    <td>[<a href="http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=summary">Gitweb</a>]</td>
    <td></td>
</tr>
</table>

#:~$ RSS.py http://www.kernel.org/kdist/rss.xml 1

2.6.31-git16: snapshot

<table>

<tr align="left">
    <td>snapshot:</td>
    <td><strong>2.6.31-git16</strong></td>
    <td>2009-09-25</td>
    <td></td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel//v2.6/snapshots/patch-2.6.31-git16.bz2">Patch</a>]</td>
    <td>[<a href="http://www.kernel.org/diff/diffview.cgi?file=/pub/linux/kernel//v2.6/snapshots/patch-2.6.31-git16.bz2">View Patch</a>]</td>
    <td></td>
    <td></td>
    <td></td>
</tr>
</table>

#:~$ RSS.py http://www.kernel.org/kdist/rss.xml 2

2.6.31: mainline

<table>

<tr align="left">
    <td>mainline:</td>
    <td><strong>2.6.31</strong></td>
    <td>2009-09-09</td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.31.tar.bz2">Full Source</a>]</td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/patch-2.6.31.bz2">Patch</a>]</td>
    <td>[<a href="http://www.kernel.org/diff/diffview.cgi?file=/pub/linux/kernel/v2.6/patch-2.6.31.bz2">View Patch</a>]</td>
    <td></td>
    <td>[<a href="http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=summary">Gitweb</a>]</td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31">Changelog</a>]</td>
</tr>
</table>

#:~$ RSS.py http://www.kernel.org/kdist/rss.xml 3

2.6.31.1: stable

<table>

<tr align="left">
    <td>stable:</td>
    <td><strong>2.6.31.1</strong></td>
    <td>2009-09-24</td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.31.1.tar.bz2">Full Source</a>]</td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/patch-2.6.31.1.bz2">Patch</a>]</td>
    <td>[<a href="http://www.kernel.org/diff/diffview.cgi?file=/pub/linux/kernel/v2.6/patch-2.6.31.1.bz2">View Patch</a>]</td>
    <td></td>
    <td>[<a href="http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.31.y.git;a=summary">Gitweb</a>]</td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.1">Changelog</a>]</td>
</tr>
</table>

#o:~$ RSS.py http://www.kernel.org/kdist/rss.xml 4

2.6.30.8: stable

<table>

<tr align="left">
    <td>stable:</td>
    <td><strong>2.6.30.8</strong></td>
    <td>2009-09-24</td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.8.tar.bz2">Full Source</a>]</td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/patch-2.6.30.8.bz2">Patch</a>]</td>
    <td>[<a href="http://www.kernel.org/diff/diffview.cgi?file=/pub/linux/kernel/v2.6/patch-2.6.30.8.bz2">View Patch</a>]</td>
    <td>[<a href="http://www.kernel.org/diff/diffview.cgi?file=/pub/linux/kernel/v2.6/incr/patch-2.6.30.7-8.bz2">View Inc.</a>]</td>
    <td>[<a href="http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.30.y.git;a=summary">Gitweb</a>]</td>
    <td>[<a href="http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.8">Changelog</a>]</td>
</tr>
</table>

of course now you have to clean HTML code out but it should be easy...

[Dizzle7677]

For those that like doing it the old fashioned way, here's a little script I came across and hacked to do everything KC does.Adjust values accordingly. Make executable & Run from /usr/src. Enjoy.

#! /bin/sh

# Build_Kernel Ver.00000000000000001
# Run under /usr/src. Adjust <whatever-kernel>.

#Dependency Check
sudo apt-get install -y --force-yes build-essential bin86 kernel-package libqt3-headers libqt3-mt-dev wget libncurses5 libncurses5-dev
#Wget the kernel
wget http://www.kernel.org/pub/linux/kernel/v2.6/testing/linux-<whatever-kernel>.tar.bz2
#Untar the kernel
sudo tar -xvjf linux-<whatever-kernel>.tar.bz2
#Symbolic link the kernel directory 
sudo ln -s /usr/src/linux-<whatever-kernel> linux
#Apply any patches here. Repeat a Wget for the patch itself but they offer fully patched kernels now. Sweet.
#sudo cp <whatever-patch>.patch linux
cd linux
#Copy the previously used config for re-use in the new kernel.
sudo cp /boot/config-<whatever-kerenel-ver> .config
#Apply any patches here. 'patch -p1 < <whatever-patch>'
#sudo patch -p1 < <whatever-patch>.patch
#Make the Menu. Adjust options -> Save.
sudo make xconfig
#Place a comment here / Only useful if rebuilding 
#sudo make-kpkg clean
#Build the new kernel.Adjust Concurrency to the CPU cores +1. Install if the build completed successfully.
#Add a break here if the build didn't complete successfully. We can just move out of the directory if the stage is successful.
sudo CONCURRENCY_LEVEL=2 make-kpkg --initrd --append-to-version=-candela kernel_image kernel_headers modules_image && cd ..
#Back out of the linux directory
#cd ..
#Install the image and headers
sudo dpkg -i *.deb
#Remove the Kernel Directory and downloaded bz2s.
sudo rm -rf /usr/src/linux-<whatever-kernel> && sudo rm *.bz2
#Symbolic Link the *new* headers directory to /lib/modules/<whatever-kernel>/build & source
#First remove bad links if there are any.
sudo rm /lib/modules/<whatever-new-kernel>/build && sudo rm /lib/modules/<whatever-new-kernel>/source
#Now synbolic link the new header directory.
sudo ln -s /usr/src/linux-headers-<whatever-new-kernel> /lib/modules/<whatever-kernel>/build && sudo ln -s /usr/src/linux-headers-<whatever-new-kernel> /lib/modules/<whatever-kernel>/source
#Reinstall any video,etc drivers after reboot or add a stage for envyng or something like that yourself.;)

[dk75]

It is wrong. It will result in non working or half-working kernel.
You must do "make oldconfig" before "make xconfig". None could make good working config out of the blue. It's better to modify working one than to make it from scratch.

[Dizzle7677]

It is wrong. It will result in non working or half-working kernel.
You must do "make oldconfig" before "make xconfig". None could make good working config out of the blue. It's better to modify working one than to make it from scratch.

So I just built a half-working kernel? Or maybe it's 65.9% working ... Imagine that.
PEACE OUT!

[dk75]

No.
In some circumstances such kernel might work without any issues, in other circumstances it will not work at all ( errors during boot ) and in other circumstances it will bootup, it will work but then you will see some strange errors wit your software that you won't recognize as broken kernel.

The thing is that your old kernel might have settings that have been removed from new kernel and new kernel might have new features that without "make oldconfig" won't be set and won't be even shown in "make xconfig" to configure.

[jessiebrownjr]

No.
In some circumstances such kernel might work without any issues, in other circumstances it will not work at all ( errors during boot ) and in other circumstances it will bootup, it will work but then you will see some strange errors wit your software that you won't recognize as broken kernel.

The thing is that your old kernel might have settings that have been removed from new kernel and new kernel might have new features that without "make oldconfig" won't be set and won't be even shown in "make xconfig" to configure.

Ok, so I just followed these directions verbatim, and im watching it compile... I see a few warnings.... I don't know alot about linux but I would want to assume any errors during compilation would be a bad thing..? Its not stopping it etc...

Now, lets say I need to do the makeoldconfig... How can I restart this without redownloading everything, or do I need to start over at step one/2 etc? let me know how to fix this before I install this kernel thanks