Messages in this thread | | | Date | Tue, 3 Sep 2013 10:25:03 +0200 | From | Ingo Molnar <> | Subject | Re: [RFC PATCH 0/2] Perf support to SDT markers |
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* Hemant Kumar Shaw <hkshaw@linux.vnet.ibm.com> wrote:
> This series adds support to perf to list and probe into the SDT markers. > The first patch implements listing of all the SDT markers present in > the ELFs (executables or libraries). The SDT markers are present in the > .note.stapsdt section of the elf. That section can be traversed to list > all the markers. Recognition of markers follows the SystemTap approach. > > The second patch will allow perf to probe into these markers. This is > done by writing the marker name and its offset into the > uprobe_events file in the tracing directory. > Then, perf tools can be used to analyze perf.data file.
Please provide a better high level description that explains the history and scope of SDT markers, how SDT markers get into binaries, how they can be used for probing, a real-life usage example that shows something interesting not possible via other ways, etc.
Thanks,
Ingo
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