Re: [PATCH] perf, tools: Always use non inlined file name for srcfile

[Andi Kleen]

On Tue, Sep 01, 2015 at 03:36:57PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Tue, Sep 01, 2015 at 11:11:42AM -0700, Andi Kleen escreveu:
> > From: Andi Kleen <ak@xxxxxxxxxxxxxxx>
> > 
> > When profiling the kernel with srcfile it's common to "get
> > stuck" in include. For example a lot of code uses current
> > or other inlines, so they get accounted to some random
> > include file. This is not very useful as a high level
> > categorization.
> 
> Cool idea :-)

Yes.

It would be also nice to use this information for unwinding
(so to show the inline stack as part of the call graph)

> Why not the so much simpler:
> 
> 		while (bfd_find_inliner_info(...));
> 
> But other than that, wouldn't be better to put an upper limit on this?
> 
> Say, 1024 levels of unwinding to avoid tripping in some bfd lib bug that
> could make this function always return true and make addr2line get stuck
> in an infinite loop?

Done. I sent a v2.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/