Re: [PATCH 1/2] Use faster check for modules in backtrace on 64bit

From: Andi Kleen
Date: Mon Sep 29 2014 - 11:21:50 EST

On Mon, Sep 29, 2014 at 01:42:12PM +0200, Peter Zijlstra wrote:
> On Fri, Sep 26, 2014 at 04:31:16PM -0700, Andi Kleen wrote:
> >
> > This has the (small) potential to get a false positive on a pointer to a
> > data segment in a module. However since we also use the frame pointer
> > chain as initial sanity check I think the danger of this is very low.
> >
> So this has come up several times; and the answer has always been, why
> not make the __module_address() thing a rb-tree instead of a linear
> loop. So I suppose I'll ask that again, why not?

Why do things complicated, if they can be done simple too?


ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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