Difference between revisions of "SystemTap"

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m (Fix category.)
m (modify config: 3.5.4)
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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 (3.5.3) you can simply append these lines into config[.x86_64]:
+
With current core/linux (3.5.4) you can simply append these lines into config[.x86_64]:
 
{{hc|x86_64|
 
{{hc|x86_64|
 
<nowiki>
 
<nowiki>
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</nowiki>
 
</nowiki>
 
}}
 
}}
If have problem on compiling the linux-3.5.3-1, refer to this commit: [https://projects.archlinux.org/svntogit/packages.git/commit/trunk/PKGBUILD?h=packages/linux&id=906c4499f7c48efe2a95bfd5c632d484d6b7ef2f&ss=1]
 
  
 
===update checksum===
 
===update checksum===

Revision as of 08:20, 26 September 2012

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 (3.5.4) you can simply append these lines into config[.x86_64]:

x86_64

echo '
CONFIG_UTRACE=y
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