linux-kernel - Re: [PATCH] 2.6.17-rt add clockevent to ixp4xx

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Message-Id: <1152910924.16702.34.camel@vence.internal.net>
Date:	Fri, 14 Jul 2006 16:02:04 -0500
From:	Kevin Hilman <khilman@...prooted.net>
To:	Milan Svoboda <msvoboda@...rockwell.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] 2.6.17-rt add clockevent to ixp4xx

On Fri, 2006-07-14 at 12:36 +0200, Milan Svoboda wrote:

> I did patch against -hrt-dyntick (see lkml, this thread) wich is almost 
> the same
> as this one against -rt (for ixp4xx part only) and I found that when timer 
> is
> loaded with IXP4XX_OST_ONE_SHOT the latency time suddenly drops to ~30usec instead
> of ~2000usec! I'd like know what's the reason for this...

You should implement the set_mode method as well and set the
IXP4XX_OST_ONE_SHOT when the clockevent layer mode == CLOCK_EVT_ONESHOT.

Kevin



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