LKML Archive on
help / color / mirror / Atom feed
From: dean gaudet <>
To: "H. Peter Anvin" <>
Cc: Jan Engelhardt <>,,
Subject: Re: [PATCH] All Transmeta CPUs have constant TSCs
Date: Mon, 8 Jan 2007 15:13:07 -0800 (PST)	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Mon, 8 Jan 2007, H. Peter Anvin wrote:

> I *definitely* support the concept that RDPMC 0 should could CPU cycles by
> convention in Linux.

unfortunately that'd be very limiting and annoying on core2 processors 
which have dedicated perf counters for clocks unhalted (actual vs. 
nominal), but only 2 configurable perf counters.  i forget what ecx value 
gets you the dedicated counters... but a solution which might work would 
be a syscall to return the perf counter number...

or we could just merge perfmon ;)


  reply	other threads:[~2007-01-08 23:13 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-05  1:48 H. Peter Anvin
2007-01-05 14:25 ` Jan Engelhardt
2007-01-08  8:02   ` dean gaudet
2007-01-08 20:19     ` Jan Engelhardt
2007-01-08 20:51       ` Chris Friesen
2007-01-08 20:51       ` H. Peter Anvin
2007-01-08 23:13         ` dean gaudet [this message]
2007-01-08 23:54           ` H. Peter Anvin

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \
    --subject='Re: [PATCH] All Transmeta CPUs have constant TSCs' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).