linux-kernel - Re: [PATCH 1/2] perf: Add persistent events

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Message-ID: <1276791597.3556.118.camel@gandalf.stny.rr.com>
Date:	Thu, 17 Jun 2010 12:19:57 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Borislav Petkov <bp@...64.org>
Cc:	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Borislav Petkov <bp@...en8.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Lin Ming <ming.m.lin@...el.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] perf: Add persistent events

On Thu, 2010-06-17 at 15:43 +0200, Borislav Petkov wrote:

> > One of the goals at least I have with pursuing this path is to separate
> > out everything that is not strictly 'perf' into things that can be reused
> > by other tools, like yours.
> 
> I'm still splitting perf/util into a more or less generic lib.
> Now, I want to reuse as much code as possible and am parsing
> the "mce:mce_record" tracepoint using parse_events(). However,
> this means that I have to push the not-so-generic perf bits
> like util/parse-events.c into the lib. Which, in turn, pulls in
> util/trace-event* etc.

Note, I have a separate generic library in trace-cmd that has the
parsing of trace events as its own library now.

This is the code that started trace-event-parse.c.

It has evolved quite a bit since then. You can get the code from:

  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git

The files are parse-events.c and parse-events.h. As well as some
filtering code: parse-filter.c.

It creates a libparsevent library.

I've been meaning to update the perf stuff with it, but just have not
had the time. Seems that what you are doing might be a good fit for it.

-- Steve


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