From: Andi Kleen <ak@muc.de>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org, davidm@napali.hpl.hp.com
Subject: Re: [PATCH] fixing sendfile on 64bit architectures
Date: Fri, 21 May 2004 11:01:15 +0200 [thread overview]
Message-ID: <m3fz9uxig4.fsf@averell.firstfloor.org> (raw)
In-Reply-To: <1Y3Ki-6x6-35@gated-at.bofh.it> (Andrew Morton's message of "Fri, 21 May 2004 00:00:18 +0200")
Andrew Morton <akpm@osdl.org> writes:
>
> An alternative might be to remove all the ifdefs, build with
> -ffunction-sections and let the linker drop any unreferenced code...
I am not sure if it will handle EXPORT_SYMBOL correctly. Sometimes
we have the situation that a function is only referenced from EXPORT_SYMBOL,
but we do not want the linker to drop it because modules may use it.
(this regularly causes problems in lib-y files)
If it did it would be great to use though. I am sure there are other
dead functions around too. Or maybe someday we could even use the
IPA functionality in gcc 3.4 ...
-Andi
next parent reply other threads:[~2004-05-21 22:35 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1Y1yE-4Lz-7@gated-at.bofh.it>
[not found] ` <1Y1yF-4Lz-9@gated-at.bofh.it>
[not found] ` <1Y1yF-4Lz-11@gated-at.bofh.it>
[not found] ` <1Y1yF-4Lz-13@gated-at.bofh.it>
[not found] ` <1Y1yF-4Lz-15@gated-at.bofh.it>
[not found] ` <1Y1yE-4Lz-5@gated-at.bofh.it>
[not found] ` <1Y1yJ-4Lz-37@gated-at.bofh.it>
[not found] ` <1Y2l5-5rr-5@gated-at.bofh.it>
[not found] ` <1Y3Ki-6x6-35@gated-at.bofh.it>
2004-05-21 9:01 ` Andi Kleen [this message]
2004-05-19 19:26 [PATCH] fixing sendfile on 64bit architectures Arnd Bergmann
2004-05-20 6:19 ` David Mosberger
2004-05-20 6:41 ` David S. Miller
[not found] ` <16556.65456.624986.552865@napali.hpl.hp.com>
[not found] ` <20040520120645.3accf048.akpm@osdl.org>
2004-05-20 19:26 ` David Mosberger
2004-05-20 19:35 ` Christoph Hellwig
2004-05-20 20:17 ` David Mosberger
2004-05-20 21:56 ` Andrew Morton
2004-05-20 22:00 ` David Mosberger
2004-05-20 22:09 ` David Mosberger
2004-05-20 23:30 ` Andrew Morton
2004-05-20 23:44 ` David Mosberger
2004-05-20 22:10 ` Jesse Barnes
2004-05-20 22:25 ` Andrew Morton
2004-05-20 22:32 ` David Mosberger
2004-05-20 22:33 ` Jesse Barnes
-- strict thread matches above, loose matches on Subject: below --
2004-05-19 9:49 Andi Kleen
2004-05-19 12:21 ` Arnd Bergmann
2004-05-19 18:17 ` David Mosberger
2004-05-19 19:01 ` Andi Kleen
2004-05-19 19:13 ` David Mosberger
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