Difference between revisions of "SystemTap"

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By default only ''CONFIG_DEBUG_INFO'' and ''CONFIG_KPROBES'' are not set.
 
By default only ''CONFIG_DEBUG_INFO'' and ''CONFIG_KPROBES'' are not set.
  
With current core/linux (3.3.8) you can simply do this:
+
With current core/linux (3.3.8) you can simply append these lines into config[.x86_64]:
{{hc|i686|<nowiki>
+
echo "CONFIG_DEBUG_INFO=y" >> config
+
echo "CONFIG_KPROBES=y" >> config
+
</nowiki>}}
+
 
{{hc|x86_64|<nowiki>
 
{{hc|x86_64|<nowiki>
echo "CONFIG_DEBUG_INFO=y" >> config.x86_64
+
echo '
echo "CONFIG_KPROBES=y" >> config.x86_64
+
CONFIG_KPROBES=y
 +
CONFIG_KPROBES_SANITY_TEST=n
 +
CONFIG_KPROBE_EVENT=y
 +
CONFIG_NET_DCCPPROBE=m
 +
CONFIG_NET_SCTPPROBE=m
 +
CONFIG_NET_TCPPROBE=y
 +
CONFIG_DEBUG_INFO=y
 +
CONFIG_DEBUG_INFO_REDUCED=n
 +
CONFIG_X86_DECODER_SELFTEST=n
 +
' >> config.x86_64
 +
 
 
</nowiki>}}
 
</nowiki>}}
  

Revision as of 07:00, 9 June 2012

This subsection contains articles on how to compile/modify/boot the Arch Linux kernels.

This template has only maintenance purposes. For linking to local translations please use interlanguage links, see Help:i18n#Interlanguage links.


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Systemtap provides free software (GPL) infrastructure to simplify the gathering of information about the running Linux system.

Easy and fast

Officially, it is recommended to build a linux-custom package to run systemtap, but rebuilding the original linux package can be very easy and efficient.

Prepare

You can run sudo abs; cp -r /var/abs/core/linux . to get the original kernel build files.

modify config

Edit config (for 32-bit systems) or config.x86_64 (for 64-bit systems), turn on these options:

  • CONFIG_DEBUG_INFO=y
  • CONFIG_KPROBES=y
  • CONFIG_RELAY=y
  • CONFIG_DEBUG_FS=y
  • CONFIG_MODULES=y
  • CONFIG_MODULE_UNLOAD=y
  • CONFIG_UTRACE=y

By default only CONFIG_DEBUG_INFO and CONFIG_KPROBES are not set.

With current core/linux (3.3.8) you can simply append these lines into config[.x86_64]:

x86_64
echo '
CONFIG_KPROBES=y
CONFIG_KPROBES_SANITY_TEST=n
CONFIG_KPROBE_EVENT=y
CONFIG_NET_DCCPPROBE=m
CONFIG_NET_SCTPPROBE=m
CONFIG_NET_TCPPROBE=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_INFO_REDUCED=n
CONFIG_X86_DECODER_SELFTEST=n
' >> config.x86_64

update checksum

Run md5sum config[.x86_64] to get a new md5sum.

In PKGBUILD file, the md5sums=('sum-of-first' ... 'sum-of-last') has the same order with source=('first-source' ... 'last-source'), put your new md5sum in the right place.

Build and Install

Optional: you can set MAKEFLAGS="-j16" in /etc/makepkg.conf to speed up the compilation.

Run makepkg to compile, then simply sudo pacman -U *.pkg.tar.gz to install the packages. pacman will tell you reinstall, That's great!

linux and linux-headers should be reinstalled, linux-docs does not matter.

Via this method, external modules (e.g. nvidia and virtualbox) don't need to be rebuilt.

Systemtap

Simply install systemtap from AUR: systemtapAUR, all done.

Build custom kernel

Please reference this README