Re: systemtap ARM port status

[Eugene Teo <eteo at redhat dot com>]

Quentin Barnes wrote:
[...]
>> 1) On host: stap -p 4 -k script.stap
>> 2) Copy generated .ko to target
>> 3) On target: insmod stap-module.ko
> 
> Well, for now I'm running completely native.  Yes, that's very, very
> painful to run gcc and g++ on such a board with an NFS mounted file
> system and NFS mounted swap file over loopback.  It can take four
> hours of wall time to compile and link the "stap" binary and the
> better part of a day to run the full testsuite.

Yes, it's very painful. I didn't run it completely native though. I ran
it in scratchbox, but it keeps on complaining that it is unable to find
the kernel debuginfo, even though it's there. I noticed that strace on
arm eabi seems to be buggy, and that didn't help. A simple hello world
stp script worked though. That is, step 1 and 2 (above), and step 3 using
staprun instead of insmod.

> I've had so many problems to solve getting Systemtap to support
> ARM, I didn't want to have to also deal with problems introduced
> from trying to get it to also support cross-builds simultaneously.
> I decided to work on one problem at a time.

Did you install it to /usr/local? I am wondering if you can tar it up,
and pass me a copy, so that I don't have to download compilers, etc onto
the device to install systemtap natively..

Eugene