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From: lkml@cl.domainfactory-kunde.de
To: Andi Kleen <ak@muc.de>
Cc: Clemens Ladisch <clemens@ladisch.de>,
	Andrew Morton <akpm@osdl.org>,
	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>,
	Vojtech Pavlik <vojtech@suse.cz>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] HPET RTC emulation: add watchdog timer
Date: Mon, 09 Jan 2006 19:00:34 +0100	[thread overview]
Message-ID: <1136829634.43c2a4c2e0997@www.domainfactory-webmail.de> (raw)
In-Reply-To: <20060109164140.GA67021@muc.de>

Andi Kleen wrote:
> On Mon, Jan 09, 2006 at 04:43:50PM +0100, Clemens Ladisch wrote:
> > To prevent the emulated RTC timer from stopping when interrupts
> > are disabled for too long, implement the watchdog timer to
> > restart it when needed.
>
> The interrupt handler should just read the time (it likely
> has to do that anyways)

Not in the current implementation.

> and check for that directly.

I want to avoid the read altogether because the round trip to the
south bridge is rather slow (1.5 microseconds with VIA chipsets).


Clemens


  reply	other threads:[~2006-01-09 18:02 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-01-09 15:43 [PATCH] HPET RTC emulation: add watchdog timer Clemens Ladisch
2006-01-09 16:15 ` Clemens Ladisch
2006-01-09 16:41 ` Andi Kleen
2006-01-09 18:00   ` lkml [this message]
2006-01-09 20:32     ` Andi Kleen
2006-01-10  8:27       ` Clemens Ladisch

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