From: Ingo Molnar <mingo@elte.hu>
To: Daniel Walker <dwalker@mvista.com>,
linux-kernel@vger.kernel.org, tglx@linutronix.de,
venkatesh.pallipadi@intel.com,
"Carlos R. Mafra" <crmafra2@gmail.com>
Subject: Re: x86: Clean up computation of HPET .mult variables
Date: Wed, 7 May 2008 09:13:34 +0200 [thread overview]
Message-ID: <20080507071334.GG32195@elte.hu> (raw)
In-Reply-To: <20080506205003.GA3749@beyonder.ift.unesp.br>
* Carlos R. Mafra <crmafra2@gmail.com> wrote:
> PS: I also computed the "exact" value for hpet_clockevent.mult
> by hand and got
>
> hpet_clockevent.mult = 61496114.58 (exact)
> hpet_clockevent.mult = 61496114 (my patch)
> hpet_clockevent.mult = 61496110 (original)
>
> so my patch in fact improves the accuracy (due to the fact that it
> removes the extra do_div() to compute the frequency, which originaly
> did not have the rounding trick.)
that's reassuring, thanks Carlos - patch is still queued up in x86.git.
(with a v2.6.27-ish merge target, provided it all goes well.)
Ingo
next prev parent reply other threads:[~2008-05-07 7:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-05 23:11 x86: Clean up computation of HPET .mult variables Carlos R. Mafra
2008-05-05 23:58 ` Daniel Walker
2008-05-06 2:13 ` Carlos R. Mafra
2008-05-06 3:23 ` Daniel Walker
2008-05-06 12:59 ` Carlos R. Mafra
2008-05-06 16:21 ` Daniel Walker
2008-05-06 20:50 ` Carlos R. Mafra
2008-05-07 2:17 ` Daniel Walker
2008-05-07 3:39 ` Carlos R. Mafra
2008-05-07 4:21 ` Daniel Walker
2008-05-07 7:13 ` Ingo Molnar [this message]
2008-05-06 12:43 ` Ingo Molnar
2008-05-06 13:13 ` Carlos R. Mafra
2008-05-06 18:51 ` rtc-cmos.c: Build fix Carlos R. Mafra
2008-05-07 7:10 ` Ingo Molnar
2008-05-07 21:31 ` Andrew Morton
2008-05-09 8:32 ` Ingo Molnar
2008-05-09 12:33 ` Carlos R. Mafra
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=20080507071334.GG32195@elte.hu \
--to=mingo@elte.hu \
--cc=crmafra2@gmail.com \
--cc=dwalker@mvista.com \
--cc=linux-kernel@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=venkatesh.pallipadi@intel.com \
/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