Re: sections mismatch detection

From: Michal Marek
Date: Fri Jan 08 2010 - 11:32:58 EST

Sam Ravnborg napsal(a):
> On Fri, Jan 08, 2010 at 02:18:56PM +0100, Michal Marek wrote:
>> Sam Ravnborg napsal(a):
>>>> I would prefer to see (logically) the same section mismatch not be
>>>> reported multiple times, even though they are in different binary
>>>> files. This would reduce the noise level quite a bit IMO.
>>> That would be nice but is not trivially doable.
>>> We need to discover when there is a section mismatch
>>> resulting from for example a function in kernel/*
>>> calling a function in arch/$ARCH/kernel so we
>>> need to execute the check on multiple levels
>>> i order to catch the bugs as early as possible.
>>> The easy 'fix' would be to execute the check only
>>> on vmlinux.o (default behaviour) but the added
>>> checks with the option enabled allows us to
>>> be much more precise in reporting where
>>> the section mismatch originate from.
>> But we could remember the (caller,callee) pairs and only emit the first
>> warning. Or am I missing something?
> The warnings comes from individual calls to mdpost.

Ah, that was the piece I was missing :).

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