linux-kernel - Re: [PATCH v7 0/4] perf: add support for profiling jitted code

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Message-ID: <20151001161340.GB12682@redhat.com>
Date:	Thu, 1 Oct 2015 13:13:40 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>,
	linux-kernel@...r.kernel.org, mingo@...e.hu, ak@...ux.intel.com,
	jolsa@...hat.com, namhyung@...nel.org, cel@...ibm.com,
	dsahern@...il.com, adrian.hunter@...el.com,
	johnmccutchan@...gle.com, brendan.d.gregg@...il.com
Subject: Re: [PATCH v7 0/4] perf: add support for profiling jitted code

Em Thu, Oct 01, 2015 at 11:39:14AM +0200, Ingo Molnar escreveu:
> * Peter Zijlstra <peterz@...radead.org> wrote:
> > > This will also generate an ELF image for each jitted function. The injected 
> > > MMAP records will point to these ELF images. The reasoning behind using ELF 
> > > images is that it makes processing for perf report and annotate automatic and 
> > > transparent. It also makes it easier to package and analyze on a remote 
> > > machine. Binutils tools can decode the ELF images easily.

> > The generation of ELF files is really nice!

> > All in all this looks really nice.

> > Thanks for doing this.
 
> Seconded, nice stuff!

Thirded! ;-)

Gave it a quick look, the ELF generation thing could later be librarized
somehow for other uses, the passing of perf_session for sample_type can
maybe use evsel->attr.sample_type instead, no?

Will try to try it after lunch :-)

- Arnaldo
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