linux-kernel - Re: [PATCH 09/31] perf tools: Compile scriptlets to BPF objects when passing '.c' to --event

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Date:	Thu, 29 Oct 2015 19:52:37 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Wang Nan <wangnan0@...wei.com>, Ingo Molnar <mingo@...nel.org>
Cc:	ast@...mgrid.com, brendan.d.gregg@...il.com,
	a.p.zijlstra@...llo.nl, daniel@...earbox.net, dsahern@...il.com,
	hekuang@...wei.com, jolsa@...nel.org, lizefan@...wei.com,
	masami.hiramatsu.pt@...achi.com, namhyung@...nel.org,
	paulus@...ba.org, linux-kernel@...r.kernel.org, pi3orama@....com,
	xiakaixu@...wei.com
Subject: Re: [PATCH 09/31] perf tools: Compile scriptlets to BPF objects when
 passing '.c' to --event

Em Thu, Oct 29, 2015 at 01:30:27PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Oct 29, 2015 at 01:25:53PM -0300, Arnaldo Carvalho de Melo escreveu:
> > And you could've provided something that would actually do something
> > meaningful, i.e.  a filter that would capture some samples for a given event
> > while discarding something not that important...
> > 
> > I.e. show the value provided at the time we build that patch.
> > 
> > I'll try to come up with something like that after I have lunch.
> 
> Ok, what I have is at my perf/core branch, will continue after having
> some food,

Oh well, more interesting things require that we access the function
arguments and that is not yet possible, requires that PROLOGUE + dwarf
bits that comes later, reading those patches...

- Arnaldo
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