Re: [PATCH 3/5] perf/sdt/x86: Move OP parser to tools/perf/arch/x86/

From: Masami Hiramatsu
Date: Tue Mar 21 2017 - 19:11:41 EST


On Tue, 21 Mar 2017 11:10:49 -0300
Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> wrote:

> Em Tue, Feb 07, 2017 at 10:52:17AM +0530, Ravi Bangoria escreveu:
> > Thanks Masami for the review.
> >
> > On Tuesday 07 February 2017 08:41 AM, Masami Hiramatsu wrote:
> > > On Thu, 2 Feb 2017 16:41:41 +0530
> > > Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxxxxxxx> wrote:
> > >
> > >> SDT marker argument is in N@OP format. N is the size of argument and
> > >> OP is the actual assembly operand. OP is arch dependent component and
> > >> hence it's parsing logic also should be placed under tools/perf/arch/.
> > >>
> > > Ok, I have one question. Is there any possibility that N is different
> > > size of OP? e.g. 8@dil, in this case we will record whole rdi.
> > > is that OK?
> >
> > By looking at list of markers on my x86 Fedora25 box, yes, it's possible
> > for case when register size used in OP is more than size specified by N.
> > For example, -4@68(%rbx). But I don't see any argument which specifies
> > higher size in N compared to size of register in OP, like you mentioned
> > in your example.
>
> Masami, can I have your Acked-by for 3-5/5 in this series?

Arnaldo, as I reviewed, this patch still have some discussion points.
Others are good to me.

Thanks!

--
Masami Hiramatsu <mhiramat@xxxxxxxxxx>