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Re: [RFC] FPU context switch

To: Jun Sun <jsun@mvista.com>
Subject: Re: [RFC] FPU context switch
From: Greg Lindahl <lindahl@keyresearch.com>
Date: Tue, 17 Sep 2002 12:03:10 -0700
Cc: linux-mips@linux-mips.org
In-reply-to: <20020917114831.G17321@mvista.com>; from jsun@mvista.com on Tue, Sep 17, 2002 at 11:48:31AM -0700
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References: <20020917110423.E17321@mvista.com> <1032288140.28433.165.camel@gs256.sp.cs.cmu.edu> <20020917114831.G17321@mvista.com>
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On Tue, Sep 17, 2002 at 11:48:31AM -0700, Jun Sun wrote:

> I think this gives a big performance improvement because most processes
> don't use FPU during their runs but they all have used_math flag set!

Jun,

You really ought to prove that first. Many people spend a lot of time
optimizing things that aren't important. If it isn't important, than
the simplest scheme is the best choice.

greg



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