From: Keith Owens <kaos@ocs.com.au>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux_developer@hotmail.com (Linux Kernel Developer),
linux-kernel@vger.kernel.org
Subject: Re: Need info on the use of certain datastructures and the first C++ keyword patch for 2.2.17
Date: Tue, 31 Oct 2000 08:04:57 +1100 [thread overview]
Message-ID: <9624.972939897@ocs3.ocs-net> (raw)
In-Reply-To: Your message of "Mon, 30 Oct 2000 18:16:44 -0000." <E13qJUE-00075t-00@the-village.bc.nu>
On Mon, 30 Oct 2000 18:16:44 +0000 (GMT),
Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
>> 2.4 symbol generation code never sees the C++ names, 2.5 code might.
>> To detect a mismatch between kernel headers and the module version
>> file, I have to generate the checksum for the consumer of the symbol
>> (C++) as well as the generator of the symbol (C) and compare them.
>
>These are structure field names. They aren't part of a symbol and are only
>part of your checksum computation which is done on the C headers so a constant.
>
>If we were renaming variables or actual objects I'd agree. But structure names
>are fine so long as we only use C names for the module checksum computation
The checksum is done on the output from the preprocessor, not the
headers. Changing field names via preprocessor flags gives different
checksums for structures.
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next prev parent reply other threads:[~2000-10-30 21:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-10-30 11:09 Need info on the use of certain datastructures and the first C++ keyword patch for 2.2.17 Linux Kernel Developer
2000-10-30 12:00 ` J . A . Magallon
2000-10-30 12:46 ` Keith Owens
2000-10-31 8:13 ` Linux Kernel Developer
2000-10-30 13:04 ` Alan Cox
2000-10-30 13:20 ` Keith Owens
2000-10-30 13:41 ` Alan Cox
2000-10-30 13:56 ` Keith Owens
2000-10-30 14:02 ` Alan Cox
2000-10-30 14:08 ` Keith Owens
2000-10-30 18:16 ` Alan Cox
2000-10-30 21:04 ` Keith Owens [this message]
2000-10-31 8:13 ` Linux Kernel Developer
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