linux-kernel - Re: [RFC PATCH 0/2] Perf support to SDT markers

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Message-ID: <87mwntt8y0.fsf@sejong.aot.lge.com>
Date:	Wed, 04 Sep 2013 15:08:55 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Hemant Kumar Shaw <hkshaw@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org, srikar@...ux.vnet.ibm.com,
	peterz@...radead.org, oleg@...hat.com, mingo@...hat.com,
	anton@...hat.com, systemtap@...rceware.org,
	masami.hiramatsu.pt@...achi.com
Subject: Re: [RFC PATCH 0/2] Perf support to SDT markers

Hi Hemant,

On Tue, 03 Sep 2013 13:06:40 +0530, Hemant Kumar Shaw 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.

First, thanks for your work!

In fact, I was working on the same topic of support SDT markers.  But I
started it by adding support for accessing arguments in uprobes [1].
The patchset is floating around the list for now but I hope it'll get
merged soon.  I guess you want to have it too :).

Anyway, it'd great if you add me to CC next time.

Thanks,
Namhyung


[1] http://thread.gmane.org/gmane.linux.kernel/1555044
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