Re: [PATCH 2/2] Rewrite jump_label.c to use binary search

From: Mathieu Desnoyers
Date: Wed Sep 22 2010 - 11:07:57 EST


* Andi Kleen (andi@xxxxxxxxxxxxxx) wrote:
>
> >
> >>> + for (; entry < stop && entry->key == key; entry++)
> >>> + if (kernel_text_address(entry->code))
> >>
> >> This does not work for modules I'm afraid, only for the core kernel. You
> >> should test for __module_text_address() somewhere.
> >
> > I thought it was shared now, but ok.
>
> Double checked. This is ok because kernel_text_address()
> already checks for modules. You were probably thinking
> of __kernel_text_address()

Ah right,

Although we have another problem:

__module_text_address() includes module init text, which defeats the
purpose of the check put in there by Jason.

So the check works for the core kernel, but not for modules.

Mathieu

>
> -Andi
>

--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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