From: David Woodhouse <dwmw2@infradead.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] add Kconfig option for optimizing for cell
Date: Sat, 15 Sep 2007 14:13:55 +0100 [thread overview]
Message-ID: <1189862035.3742.5.camel@shinybook.infradead.org> (raw)
In-Reply-To: <200709150221.57825.arnd@arndb.de>
On Sat, 2007-09-15 at 02:21 +0200, Arnd Bergmann wrote:
> Since the PPE on cell is an in-order core, it suffers significantly
> from wrong instruction scheduling. This adds an Kconfig option that
> enables passing -mtune=cell to gcc in order to generate object
> code that runs well on cell.
Do we have an option which is useful for a multiplatform kernel (and for
userspace) and which lies between the two extremes? Something which will
improve performance on Cell (and POWER6?) without sucking too hard
elsewhere?
--
dwmw2
next prev parent reply other threads:[~2007-09-15 13:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-15 0:21 [PATCH] add Kconfig option for optimizing for cell Arnd Bergmann
2007-09-14 23:07 ` Josh Boyer
2007-09-15 1:02 ` Arnd Bergmann
2007-09-14 23:36 ` Josh Boyer
2007-09-15 0:50 ` Segher Boessenkool
2007-09-15 1:02 ` Arnd Bergmann
2007-09-15 13:13 ` David Woodhouse [this message]
2007-09-15 13:30 ` Arnd Bergmann
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