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Experimenting with ARM uprobes kernel and systemtap
- From: William Cohen <wcohen at redhat dot com>
- To: "systemtap at sourceware dot org" <systemtap at sourceware dot org>
- Date: Thu, 05 Sep 2013 14:14:45 -0400
- Subject: Experimenting with ARM uprobes kernel and systemtap
- Authentication-results: sourceware.org; auth=none
There has been some work at Linaro.org to include uprobes in the arm kernel:
https://blueprints.launchpad.net/linux-linaro/+spec/arm-uprobes
I built a local version of a the uprobes branch kernel with uprobes enabled from:
https://git.linaro.org/gitweb?p=people/davelong/linux.git;a=summary
The tests took several hours on a samsung arm chromebook
=== systemtap Summary ===
# of expected passes 3011
# of unexpected failures 168
# of expected failures 283
# of known failures 40
# of untested testcases 179
# of unsupported tests 4
The complete results are posted on dejazilla:
web.elastic.org/~dejazilla/viewsummary.php?summary=%3D%27%3C5228C51E.2010104%40redhat.com%3E%27
I didn't see any regressions in a comparison between a stock linux-3.11 vs. the linux-3.11-rc5 with uprobes on the same arm machine:
https://web.elastic.org/~dejazilla/viewrgdiff.php?rg1=76402&rg2=484904&_sort=0A&_limit=1000
-Will