From: Michael Buesch <mbuesch@freenet.de>
To: Ingo Oeser <ioe-lkml@rameria.de>
Cc: Andi Kleen <ak@suse.de>,
linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>,
Sam Ravnborg <sam@ravnborg.org>
Subject: Re: [2.6 patch] add a config option for -Os compilation
Date: Sun, 19 Oct 2003 16:09:27 +0200 [thread overview]
Message-ID: <200310191609.35179.mbuesch@freenet.de> (raw)
In-Reply-To: <200310191556.56469.ioe-lkml@rameria.de>
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On Sunday 19 October 2003 15:56, Ingo Oeser wrote:
> Hi all,
Hi Ingo
> Simple implementation today:
>
> optimize_for_speed := CFLAGS_$1 += -O3
> optimize_for_size := CFLAGS_$1 += -Os
I experienced many problems while using -O3,
because it may randomly inline functions, that
are not marked inline. For example -O3 made
ide-scsi on 2.4 nonworking for me.
The book "Linux Device Drivers" has a longer
explanation for _not_ using -O3 on kernels.
>
> Regards
>
> Ingo Oeser
- --
Regards Michael Buesch [ http://www.tuxsoft.de.vu ]
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next prev parent reply other threads:[~2003-10-19 14:09 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20031015225055.GS17986@fs.tum.de.suse.lists.linux.kernel>
[not found] ` <20031015161251.7de440ab.akpm@osdl.org.suse.lists.linux.kernel>
[not found] ` <20031015232440.GU17986@fs.tum.de.suse.lists.linux.kernel>
[not found] ` <20031015165205.0cc40606.akpm@osdl.org.suse.lists.linux.kernel>
[not found] ` <20031018102127.GE12423@fs.tum.de.suse.lists.linux.kernel>
[not found] ` <649730000.1066491920@[10.10.2.4].suse.lists.linux.kernel>
[not found] ` <20031018102402.3576af6c.akpm@osdl.org.suse.lists.linux.kernel>
[not found] ` <20031018174434.GJ12423@fs.tum.de.suse.lists.linux.kernel>
[not found] ` <20031018105733.380ea8d2.akpm@osdl.org.suse.lists.linux.kernel>
2003-10-18 19:19 ` [2.6 patch] add a config option for -Os compilation Andi Kleen
2003-10-19 13:56 ` Ingo Oeser
2003-10-19 14:09 ` Michael Buesch [this message]
2003-10-19 17:37 ` Sam Ravnborg
[not found] <Ip4B.8lT.23@gated-at.bofh.it>
[not found] ` <Ip4B.8lT.25@gated-at.bofh.it>
[not found] ` <Ip4B.8lT.27@gated-at.bofh.it>
[not found] ` <Ip4B.8lT.29@gated-at.bofh.it>
[not found] ` <Ip4B.8lT.31@gated-at.bofh.it>
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[not found] ` <Ip4B.8lT.41@gated-at.bofh.it>
[not found] ` <Ip4B.8lT.43@gated-at.bofh.it>
[not found] ` <Ip4B.8lT.21@gated-at.bofh.it>
2003-10-19 17:04 ` Ihar 'Philips' Filipau
[not found] <Ioi6.7kG.15@gated-at.bofh.it>
[not found] ` <Ioi6.7kG.17@gated-at.bofh.it>
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[not found] ` <Ioi6.7kG.25@gated-at.bofh.it>
[not found] ` <Ioi6.7kG.27@gated-at.bofh.it>
[not found] ` <Ioi6.7kG.29@gated-at.bofh.it>
[not found] ` <Ioi6.7kG.31@gated-at.bofh.it>
[not found] ` <Ioi6.7kG.11@gated-at.bofh.it>
[not found] ` <IorM.7wQ.11@gated-at.bofh.it>
2003-10-19 16:55 ` Ihar 'Philips' Filipau
[not found] <I2Ue.7PG.3@gated-at.bofh.it>
[not found] ` <I2Ue.7PG.5@gated-at.bofh.it>
[not found] ` <I2Ue.7PG.7@gated-at.bofh.it>
[not found] ` <I2Ue.7PG.9@gated-at.bofh.it>
[not found] ` <I2Ue.7PG.11@gated-at.bofh.it>
[not found] ` <I2Ue.7PG.13@gated-at.bofh.it>
[not found] ` <I2Ue.7PG.1@gated-at.bofh.it>
[not found] ` <ImzK.4TR.25@gated-at.bofh.it>
[not found] ` <ImzK.4TR.23@gated-at.bofh.it>
[not found] ` <InYQ.6OJ.21@gated-at.bofh.it>
2003-10-19 16:05 ` Ihar 'Philips' Filipau
2003-10-19 16:14 ` Wichert Akkerman
2003-10-19 16:31 ` Valdis.Kletnieks
2003-10-19 16:57 ` Maciej Zenczykowski
2003-10-19 18:00 ` Valdis.Kletnieks
[not found] <H2MN.3cm.7@gated-at.bofh.it>
[not found] ` <H366.3IC.9@gated-at.bofh.it>
[not found] ` <H3fO.3VO.13@gated-at.bofh.it>
[not found] ` <H3IO.4yt.9@gated-at.bofh.it>
[not found] ` <HWvz.5PI.9@gated-at.bofh.it>
[not found] ` <I1EP.5QO.1@gated-at.bofh.it>
2003-10-18 17:10 ` Ihar 'Philips' Filipau
[not found] ` <20031019113743.GO12423@fs.tum.de>
2003-10-19 14:15 ` Ihar 'Philips' Filipau
2003-10-19 15:40 ` Martin J. Bligh
2003-10-15 22:50 Adrian Bunk
2003-10-15 23:12 ` Andrew Morton
2003-10-15 23:24 ` Adrian Bunk
2003-10-15 23:52 ` Andrew Morton
2003-10-18 10:21 ` Adrian Bunk
2003-10-18 15:45 ` Martin J. Bligh
2003-10-18 17:24 ` Andrew Morton
2003-10-18 17:44 ` Adrian Bunk
2003-10-18 17:57 ` Andrew Morton
2003-10-19 15:43 ` Martin J. Bligh
2003-10-19 15:59 ` Adrian Bunk
2003-10-19 16:25 ` Arjan van de Ven
2003-10-19 18:32 ` Andrew Morton
2003-10-20 14:27 ` Martin J. Bligh
2003-10-21 8:22 ` Jan-Benedict Glaw
-- strict thread matches above, loose matches on Subject: below --
2003-09-14 12:16 Adrian Bunk
2003-09-14 12:33 ` Russell King
2003-09-14 13:21 ` Adrian Bunk
2003-09-14 14:52 ` Russell King
2003-09-25 14:38 ` Adrian Bunk
2003-09-25 18:11 ` Sam Ravnborg
2003-09-26 11:44 ` Russell King
2003-09-26 22:36 ` Adrian Bunk
2003-09-14 13:53 ` Wade
2003-09-14 14:57 ` Alan Cox
2003-09-15 15:15 ` Martin J. Bligh
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