From: Russell King <rmk@arm.linux.org.uk>
To: Robert Schwebel <r.schwebel@pengutronix.de>
Cc: Grant Likely <grant.likely@secretlab.ca>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
ksummit-2009-discuss@lists.linux-foundation.org,
linux-arch@vger.kernel.org, linux-embedded@vger.kernel.org,
Josh Boyer <jwboyer@linux.vnet.ibm.com>,
Tim Bird <tim.bird@am.sony.com>
Subject: Re: Representing Embedded Architectures at the Kernel Summit
Date: Tue, 2 Jun 2009 22:48:40 +0100 [thread overview]
Message-ID: <20090602214840.GB10800@flint.arm.linux.org.uk> (raw)
In-Reply-To: <20090602214005.GL32630@pengutronix.de>
On Tue, Jun 02, 2009 at 11:40:05PM +0200, Robert Schwebel wrote:
> And even with the cpu core, we usually build kernels with optimized
> toolchains for their cpu family.
I'm afraid that doesn't make a blind bit of difference to the kernel -
it passes the relevent optimization flags to gcc which tell the compiler
which instructions to use (based upon the CPU architecture) and how to
schedule those instructions (based upon the CPU type(s) chosen in the
kernel configuration.)
All that an "optimized" toolchain is is a toolchain with a different
default optimization selected.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of:
next prev parent reply other threads:[~2009-06-02 21:48 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-02 15:22 Representing Embedded Architectures at the Kernel Summit James Bottomley
2009-06-02 17:29 ` Josh Boyer
2009-06-02 17:42 ` James Bottomley
2009-06-02 17:52 ` David VomLehn
2009-06-02 18:25 ` James Bottomley
2009-06-02 18:51 ` Josh Boyer
2009-06-02 19:30 ` Tim Bird
2009-06-02 20:37 ` [Ksummit-2009-discuss] " James Bottomley
2009-06-02 20:44 ` Bill Gatliff
2009-06-02 21:34 ` Robert Schwebel
2009-06-03 3:35 ` Greg KH
[not found] ` <20090731152617.GW29245@pengutronix.de>
2009-07-31 15:53 ` flicker free booting Robert Schwebel
2009-07-31 18:03 ` David VomLehn
2009-07-31 18:09 ` Robert Schwebel
2009-07-31 18:42 ` Bill Gatliff
2009-08-03 8:19 ` Sascha Hauer
2009-08-03 8:37 ` Geert Uytterhoeven
2009-07-31 18:46 ` Bill Gatliff
2009-07-31 19:48 ` Tim Bird
2009-07-31 19:51 ` Bill Gatliff
2009-07-31 20:05 ` Robert Schwebel
2009-08-01 1:26 ` Tim Bird
2009-07-31 19:25 ` Bill Gatliff
2009-08-01 14:25 ` Jamie Lokier
2009-06-03 0:03 ` [Ksummit-2009-discuss] Representing Embedded Architectures at the Kernel Summit David VomLehn
2009-06-03 0:52 ` Eric W. Biederman
2009-06-03 1:42 ` Steven Rostedt
2009-06-02 22:21 ` Jean-Christophe PLAGNIOL-VILLARD
2009-06-03 6:24 ` [Ksummit-2009-discuss] " Ralf Baechle
2009-06-10 23:13 ` Kumar Gala
2009-06-14 3:48 ` Grant Likely
2009-06-10 23:08 ` Kumar Gala
2009-06-02 17:29 ` Grant Likely
2009-06-02 17:45 ` David VomLehn
2009-06-02 18:46 ` Grant Likely
2009-06-02 17:48 ` James Bottomley
2009-06-03 12:17 ` Mark Brown
2009-06-04 18:18 ` Grant Likely
2009-06-02 21:10 ` Russell King
2009-06-02 21:16 ` Bill Gatliff
2009-06-02 21:18 ` Geert Uytterhoeven
2009-06-02 21:40 ` Robert Schwebel
[not found] ` <20090602214005.GL32630@pengutronix.de>
2009-06-02 21:48 ` Russell King [this message]
[not found] ` <10f740e80906021418i1d58f5eer940e7a8ec9fb8b9e@mail.gmail.com>
2009-06-03 7:07 ` [Ksummit-2009-discuss] " Ralf Baechle
2009-06-04 20:08 ` Grant Likely
[not found] ` <4A2596B4.3020309@billgatliff.com>
2009-06-04 20:15 ` Grant Likely
[not found] ` <3340601010994331832@unknownmsgid>
2009-06-04 20:24 ` Grant Likely
2009-06-03 6:53 ` [Ksummit-2009-discuss] " Ralf Baechle
2009-06-03 13:04 ` Catalin Marinas
2009-06-03 13:18 ` Josh Boyer
2009-06-03 13:45 ` Catalin Marinas
2009-06-03 14:11 ` Josh Boyer
2009-06-03 14:06 ` Jean-Christophe PLAGNIOL-VILLARD
2009-06-03 16:19 ` James Bottomley
2009-06-03 17:09 ` Russell King
2009-06-03 18:43 ` Andrew Morton
2009-06-03 19:01 ` James Bottomley
2009-06-04 3:11 ` David VomLehn (dvomlehn)
2009-06-04 3:24 ` Mike Frysinger
2009-06-04 9:23 ` Mel Gorman
2009-06-03 19:08 ` Catalin Marinas
2009-06-10 9:42 ` Thomas Petazzoni
2009-06-16 6:42 ` Mike Rapoport
2009-06-16 8:06 ` Mike Frysinger
2009-06-16 12:19 ` [Ksummit-2009-discuss] " Ralf Baechle
2009-06-17 4:26 ` H. Peter Anvin
2009-06-17 15:04 ` Ralf Baechle
2009-06-17 17:14 ` H. Peter Anvin
2009-06-16 16:06 ` Grant Likely
2009-06-16 18:18 ` Jamie Lokier
2009-06-16 19:28 ` Grant Likely
2009-06-16 20:07 ` Jamie Lokier
2009-06-16 20:10 ` Marcel Holtmann
2009-06-16 21:04 ` Grant Likely
2009-06-18 3:05 ` Paul Mundt
2009-06-17 14:31 ` Kumar Gala
2009-06-18 2:51 ` Paul Mundt
2009-06-19 2:59 ` Kumar Gala
2009-06-19 3:00 ` Paul Mundt
2009-06-19 7:53 ` Kumar Gala
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