From: Andi Kleen <ak@suse.de>
To: Vojtech Pavlik <vojtech@suse.cz>
Cc: Andreas Mohr <andi@rhlx01.fht-esslingen.de>,
Dmitry Torokhov <dtor@insightbb.com>,
Rusty Russell <rusty@rustcorp.com.au>,
lkml - Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Turn rdmsr, rdtsc into inline functions, clarify names
Date: 07 Aug 2006 18:12:03 +0200 [thread overview]
Message-ID: <p73k65kplt8.fsf@verdi.suse.de> (raw)
In-Reply-To: <20060807160432.GA16695@suse.cz>
Vojtech Pavlik <vojtech@suse.cz> writes:
> On Mon, Aug 07, 2006 at 05:57:14PM +0200, Andi Kleen wrote:
> > > That way a driver could use
> > >
> > > if (gtod_cpu_cycles_needed <= 500)
> > > gettimeofday();
> > > else
> > > funky_fast_workaround();
> >
> > Sounds like overengineering to me. I prefer something simple.
>
> I could as well benchmark gettimeofday() in the gameport init.
Except you can't because the only way to benchmark it would
be to use gettimeofday already and then you don't know
how much is overhead and what is the real time.
-Andi
next prev parent reply other threads:[~2006-08-07 16:12 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1154771262.28257.38.camel@localhost.localdomain>
2006-08-06 2:38 ` [PATCH] Turn rdmsr, rdtsc into inline functions, clarify names Andi Kleen
2006-08-06 2:56 ` Rusty Russell
2006-08-06 2:58 ` H. Peter Anvin
2006-08-06 3:09 ` Rusty Russell
2006-08-06 3:11 ` H. Peter Anvin
2006-08-06 3:49 ` Rusty Russell
2006-08-06 3:16 ` Andi Kleen
2006-08-06 3:52 ` Rusty Russell
2006-08-06 14:58 ` Andi Kleen
2006-08-07 2:43 ` Dmitry Torokhov
2006-08-07 8:48 ` Andi Kleen
2006-08-07 11:09 ` Vojtech Pavlik
2006-08-07 12:28 ` Andi Kleen
2006-08-07 12:48 ` Vojtech Pavlik
2006-08-07 12:56 ` Andi Kleen
2006-08-07 13:18 ` Vojtech Pavlik
2006-08-07 13:32 ` Dmitry Torokhov
2006-08-07 15:01 ` Andi Kleen
2006-08-07 15:19 ` Andreas Mohr
2006-08-07 15:57 ` Andi Kleen
2006-08-07 16:04 ` Vojtech Pavlik
2006-08-07 16:12 ` Andi Kleen [this message]
2006-08-07 19:22 ` Vojtech Pavlik
2006-08-14 20:13 ` Pavel Machek
2006-08-07 11:07 ` Vojtech Pavlik
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