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Message-ID: <4B0D62D3.8020707@tuffmail.co.uk>
Date: Wed, 25 Nov 2009 17:01:07 +0000
From: Alan Jenkins <alan-jenkins@...fmail.co.uk>
To: James Bottomley <James.Bottomley@...senPartnership.com>
CC: Rusty Russell <rusty@...tcorp.com.au>,
Alex Chiang <achiang@...com>, Tony Luck <tony.luck@...il.com>,
Sam Ravnborg <sam@...nborg.org>,
Mike Frysinger <vapier.adi@...il.com>, greg@...ah.com,
linux-kbuild@...r.kernel.org, carmelo73@...il.com,
linux-kernel@...r.kernel.org, kyle@...artin.ca, deller@....de,
jejb@...isc-linux.org,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
paulus@...ba.org
Subject: Re: [PATCH 05/10] kbuild: sort the list of symbols exported by the
kernel (__ksymtab)
James Bottomley wrote:
> On Wed, 2009-11-25 at 09:15 +0000, Alan Jenkins wrote:
>
>> James Bottomley wrote:
>>
>>> On Tue, 2009-11-24 at 09:28 +0000, Alan Jenkins wrote:
>>>
>>>
>>>> James Bottomley wrote:
>>>>
>>>>
>>>>> On Tue, 2009-11-24 at 11:27 +1030, Rusty Russell wrote:
>>>>>
>>>>>
>>>>>
>>>>>> On Tue, 24 Nov 2009 06:23:20 am Alex Chiang wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>> Hi Alan, Rusty,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> Hi Alex,
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> In the meantime, while Alan is deciding the proper way to fix
>>>>>>> this, would it be possible to drop the offending patch series
>>>>>>> from linux-next?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> Done. That takes the pressure off Alan, and makes sure he has time to get
>>>>>> it right.
>>>>>>
>>>>>>
>>>>>>
>>>>> That probably suits us on parisc too. I just checked out our build in
>>>>> linux-next: we don't pass __modpost ... it looks like we have all the
>>>>> module symbols undefined. Will investigate more.
>>>>>
>>>>> James
>>>>>
>>>>>
>>>>>
>>>> I think parisc wants P'printk where ia64 uses @fptr(printk).
>>>>
>>>> It may also need ".import printk,code" or similar.
>>>>
>>>>
>>> I think if you have to make modpost architecture specific, there's
>>> something a bit wrong in the patch series.
>>>
>>> I can confirm that reverting this particular patch allows the parisc
>>> build to work again. It still won't boot because module symbols aren't
>>> resolved.
>>>
>>> James
>>>
>>>
>> Yes, the series as a whole relies on that patch. Rusty pulled the
>> series from linux-next (thanks rusty!).
>>
>
> Not according to current linux-next:
>
> jejb@ion> git log next-20091125|grep -3 'sort the list of symbols'
> Author: Alan Jenkins <alan-jenkins@...fmail.co.uk>
> Date: Sat Nov 7 21:03:56 2009 +0000
>
> kbuild: sort the list of symbols exported by the kernel (__ksymtab)
>
> modpost of vmlinux.o now extracts the ksymtab sections and outputs
> sorted versions of them as .tmp_exports-asm.S. These sorted sections
>
> Could we please have this removed so we can resume our testing of next?
>
Note to Rusty: the patches which depend on this are
"module: speed up find_symbol() using binary search on the builtin
symbol tables"
and
"modpost: fix modules on ia64 - use @fptr() on exported function symbols"
(the second one needs to be rewritten anyway, because -
> We don't need there to be no arch changes ... but we do need any arch
> specificity confined to arch specific files.
>
> James
>
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