linux-kernel - Re: [PATCH 8/9] perf annotate: fix it for non-prelinked *.so

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Date:	Thu, 4 Feb 2010 17:48:51 -0200
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Kirill Smelkov <kirr@...dau.phys.spbu.ru>
Cc:	Mike Galbraith <efault@....de>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 8/9] perf annotate: fix it for non-prelinked *.so

Em Thu, Feb 04, 2010 at 10:34:04PM +0300, Kirill Smelkov escreveu:
> On Thu, Feb 04, 2010 at 07:31:46AM +0100, Mike Galbraith wrote:
> > Monkey see monkey do.
> > 
> > perf tools: fix perf top module symbol annotation.
> >  		"objdump --start-address=0x%016Lx "
> >  			 "--stop-address=0x%016Lx -dS %s",
> > -		map->unmap_ip(map, sym->start),
> > -		map->unmap_ip(map, sym->end), path);
> > +		map__rip_2objdump(map, sym->start),
> > +		map__rip_2objdump(map, sym->end), path);
> 
> If I recall correctly, that's not enough.
> 
> The problem is top code is also wrong at mapping objdump addresses to
> absolute ip. That is another part of builtin-top.c which does
> map->unmap_ip(), and I've already suggested a fix back at holidays:
> 
> http://marc.info/?l=linux-kernel&m=126295508002536&w=2

Yeah, I was looking at Mike's report about 'perf annotate' not working
with modules, debugged, wrote a patch that looed at the ELF header obj
type as the key to apply or not the unmap_ip operation and when it was
working I thought I saw that patch somewhere, looked at yours and
applied it instead.

Then I was testing your subsequent patches but had to call it a day,
sent what I had that at least fixed 'annotate' and Mike took it from
there.

Looking at this now.
 
- Arnaldo
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