linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Andrea Arcangeli <andrea@suse.de>
To: "J.A. Magallon" <jamagallon@able.es>
Cc: Rik van Riel <riel@conectiva.com.br>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Andrew Theurer <habanero@us.ibm.com>,
	linux-kernel@vger.kernel.org,
	Marcelo Tosatti <marcelo@conectiva.com.br>
Subject: Re: Linux 2.4.19-rc3 (hyperthreading)
Date: Tue, 30 Jul 2002 02:32:48 +0200	[thread overview]
Message-ID: <20020730003248.GP1201@dualathlon.random> (raw)
In-Reply-To: <20020730000912.GA6406@714-cm.cps.unizar.es>

On Tue, Jul 30, 2002 at 02:09:12AM +0200, J.A. Magallon wrote:
> How about this version (gcc-3.2 generates the same amount of assembler):
> 
> int find(int this_cpu)
> {
>     int i;
> 
>     for (   i = (this_cpu+1)%smp_num_cpus;
>             i != this_cpu;
>             i = (i+1)%smp_num_cpus  )
>     {
>         int physical = cpu_logical_map(i);
>         int sibling = cpu_sibling_map[physical];
> 
>         if (idle_cpu(physical) && idle_cpu(sibling))
>             return physical;
>     }
>     return -1;
> }

I also find the above a bit more readable, I'll rediff once more time
then.

Andrea

  reply	other threads:[~2002-07-30  0:28 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-07-29 19:54 Linux 2.4.19-rc3 (hyperthreading) Andrew Theurer
2002-07-29 21:28 ` Alan Cox
2002-07-29 20:38   ` Andrea Arcangeli
2002-07-29 23:45     ` Andrea Arcangeli
2002-07-29 23:51       ` Rik van Riel
2002-07-30  0:04         ` Andrea Arcangeli
2002-07-30  0:09         ` J.A. Magallon
2002-07-30  0:32           ` Andrea Arcangeli [this message]
2002-07-31  3:08           ` Bill Davidsen
2002-07-31 12:43             ` Rik van Riel
2002-07-31 14:16               ` Sam Vilain
2002-08-01 18:29                 ` Ingo Oeser
2002-07-29 20:58   ` Andrew Theurer
2002-07-30  0:37     ` Alan Cox
2002-07-29 23:42       ` Andrew Theurer
2002-07-30  0:56         ` James Bourne
2002-07-30  0:47     ` James Bourne
2002-07-30  1:15       ` Andrew Theurer
2002-07-30  3:09         ` James Bourne

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=20020730003248.GP1201@dualathlon.random \
    --to=andrea@suse.de \
    --cc=alan@lxorguk.ukuu.org.uk \
    --cc=habanero@us.ibm.com \
    --cc=jamagallon@able.es \
    --cc=linux-kernel@vger.kernel.org \
    --cc=marcelo@conectiva.com.br \
    --cc=riel@conectiva.com.br \
    /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;
as well as URLs for NNTP newsgroup(s).