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

From: Andi Kleen
Date: Tue Sep 01 2015 - 14:48:44 EST

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 :-)


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.


ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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