linux-kernel - Re: [PATCH v5 16/16] perf util: use correct IP mapping to find srcline for hist entry

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Message-ID: <20171012185218.GA20959@krava>
Date:   Thu, 12 Oct 2017 20:52:18 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Milian Wolff <milian.wolff@...b.com>
Cc:     Namhyung Kim <namhyung@...nel.org>, acme@...nel.org,
        jolsa@...nel.org, Jin Yao <yao.jin@...ux.intel.com>,
        Linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        kernel-team@....com
Subject: Re: [PATCH v5 16/16] perf util: use correct IP mapping to find
 srcline for hist entry

On Thu, Oct 12, 2017 at 08:22:58PM +0200, Milian Wolff wrote:

SNIP

> > >  		return SRCLINE_UNKNOWN;
> > > 
> > > -	return get_srcline(map->dso, map__rip_2objdump(map, he->ip),
> > > +	return get_srcline(map->dso, map__objdump_2mem(map, he->ip),
> > > 
> > >  			   he->ms.sym, true, true);
> > 
> > I'm not sure this is right.  IIRC hist_entry->ip is a relative IP so
> > it needs to be changed for objdump use.  Maybe there's some bug on
> > translating the address but it seems that the original code is
> > correct.  And this change breaks srcline for my test program (which is
> > a PIE).
> 
> Odd, I'll have to look at that. But this is imo unrelated to the rest of the 
> patch series. So maybe we skip this one and apply the others. Assuming those 
> other patches are OK by now?
> 
> Jiri, you also reviewed it before, is there anything else missing?

I plan to check on it this week.. sry for delay

jirka