From: Vojtech Pavlik <vojtech@suse.cz>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: george anzinger <george@mvista.com>, Jonas Diemer <diemer@gmx.de>,
linux-kernel@vger.kernel.org
Subject: Re: VIA 686 timer bugfix incomplete
Date: Fri, 9 Nov 2001 09:34:50 +0100 [thread overview]
Message-ID: <20011109093450.A7676@suse.cz> (raw)
In-Reply-To: <3BEAF962.8E407C30@mvista.com> <E161ydI-000178-00@the-village.bc.nu>
In-Reply-To: <E161ydI-000178-00@the-village.bc.nu>; from alan@lxorguk.ukuu.org.uk on Thu, Nov 08, 2001 at 11:30:52PM +0000
On Thu, Nov 08, 2001 at 11:30:52PM +0000, Alan Cox wrote:
> > Me thinks the real solution is the ACPI pm timer. 3 times the
> > resolution of the PIT and you can not stop it. The high-res-timers
> > patch will allow you to use this as the time keeper and just use the PIT
> > to generate interrupts.
>
> For awkward boxes you can use the PIT, for good boxes we can use rdtsc or
> eventually the ACPI timers when running with ACPI
The problem is that we use PIT even together with TSC because we need to
know how much time passed since last interrupt to be able to synchronize
the TSC with possibly delayed timer interrupts and TSC doesn't tell us
that ... but hopefully this can be done with some kind of PLL ...
--
Vojtech Pavlik
SuSE Labs
next prev parent reply other threads:[~2001-11-09 8:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-07 11:50 VIA 686 timer bugfix incomplete Jonas Diemer
2001-11-07 12:15 ` Alan Cox
2001-11-07 19:25 ` Vojtech Pavlik
2001-11-07 19:48 ` Jonas Diemer
2001-11-07 20:14 ` Vojtech Pavlik
2001-11-07 22:32 ` Neale Banks
2001-11-08 8:02 ` Vojtech Pavlik
2001-11-08 9:21 ` Jonas Diemer
2001-11-08 20:08 ` Vojtech Pavlik
[not found] ` <20011108221751.5273484e.diemer@gmx.de>
2001-11-08 21:22 ` Vojtech Pavlik
2001-11-08 21:30 ` george anzinger
2001-11-08 23:30 ` Alan Cox
2001-11-09 8:34 ` Vojtech Pavlik [this message]
2001-11-09 17:21 ` george anzinger
2001-11-07 19:29 ` Steve Underwood
2001-11-08 20:11 ` Vojtech Pavlik
2001-11-09 2:57 ` Steve Underwood
-- strict thread matches above, loose matches on Subject: below --
2001-11-09 19:19 Grover, Andrew
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20011109093450.A7676@suse.cz \
--to=vojtech@suse.cz \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=diemer@gmx.de \
--cc=george@mvista.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox