linux-kernel - Re: [PATCH 3/4] perf, callchain: Add generic report parse callchain callback function

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Message-ID: <20140406121129.GB1164@krava.brq.redhat.com>
Date:	Sun, 6 Apr 2014 14:11:29 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Don Zickus <dzickus@...hat.com>
Cc:	Namhyung Kim <namhyung@...nel.org>, acme@...stprotocols.net,
	LKML <linux-kernel@...r.kernel.org>, jmario@...hat.com,
	fowles@...each.com
Subject: Re: [PATCH 3/4] perf, callchain: Add generic report parse callchain
 callback function

On Fri, Apr 04, 2014 at 03:31:19PM -0400, Don Zickus wrote:
> On Thu, Apr 03, 2014 at 02:57:32PM +0900, Namhyung Kim wrote:
> > On Mon, 24 Mar 2014 15:32:56 -0400, Don Zickus wrote:
> > > This takes the parse_callchain_opt function and copies it into the
> > > callchain.c file.  Now the c2c tool can use it too without duplicating.
> > >
> > > Signed-off-by: Don Zickus <dzickus@...hat.com>
> > > ---
> > >  tools/perf/util/callchain.c | 83 +++++++++++++++++++++++++++++++++++++++++++++
> > >  tools/perf/util/callchain.h |  1 +
> > >  2 files changed, 84 insertions(+)
> > >
> > > diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
> > > index 8d9db45..2320678 100644
> > > --- a/tools/perf/util/callchain.c
> > > +++ b/tools/perf/util/callchain.c
> > > @@ -25,6 +25,89 @@
> > >  
> > >  __thread struct callchain_cursor callchain_cursor;
> > >  
> > > +int
> > > +report_parse_callchain_opt(const char *arg)
> > 
> > As it eliminated any dependency to the report code, the name can omit
> > 'report' as well.
> 
> Hmm, shrinking this down to 'parse_callchain_opt' seems to conflict with
> builtin-top.c's defintion which is a wrapper around
> record_parse_callchain_opt.
> 
> I can modify builtin-top.c's defintion to top_parse_callchain_opt, but do
> we want to make the function parse_callchain_opt name more obvious that it is
> for 'report' style parsing (which means it looks for the embedded
> callchain flag)?  Vs. the record_parse_callchain_opt function, which is for
> setting up the callchain flag?

that sounds good to me.. (record|report)_parse_callchain_opt

jirka
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