git@vger.kernel.org mailing list mirror (one of many)
 help / color / mirror / code / Atom feed
From: Eric Sunshine <sunshine@sunshineco.com>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Andreas Hasenack <andreas@canonical.com>, git@vger.kernel.org
Subject: Re: chainlink.pl /proc/cpuinfo regexp fails on s390x
Date: Tue, 22 Nov 2022 18:50:26 -0500	[thread overview]
Message-ID: <CAPig+cRchF_6t-B-cZHLHAH_E6qNmapTezSfCj9AZ8cfWNzivw@mail.gmail.com> (raw)
In-Reply-To: <87v8n6o9du.fsf@igel.home>

On Tue, Nov 22, 2022 at 6:37 PM Andreas Schwab <schwab@linux-m68k.org> wrote:
> On Nov 22 2022, Andreas Hasenack wrote:
> > /^processor[\s\d]*:/
> > or something else.
>
> Something else.
>
> $ getconf _NPROCESSORS_ONLN

Yes, that works too and was (I'm pretty sure) considered during
development. The reason /proc/cpu was chosen over `getconf` was that
opening & reading /proc/cpu should be faster since it doesn't involve
spawning a process. If we did use `getconf`, we'd have to be careful
to degrade gracefully if `getconf` isn't available or if the
configuration parameter (i.e. "_NPROCESSORS_ONLN") isn't known on the
platform.

That said, the submitted patch[1] is probably good enough for now,
especially since there's talk about possibly removing this code
entirely.

[1]: https://lore.kernel.org/git/pull.1385.git.git.1669148861635.gitgitgadget@gmail.com/

  reply	other threads:[~2022-11-22 23:51 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-22 17:37 chainlink.pl /proc/cpuinfo regexp fails on s390x Andreas Hasenack
2022-11-22 17:57 ` Eric Sunshine
2022-11-22 18:04   ` Andreas Hasenack
2022-11-22 18:13     ` Eric Sunshine
2022-11-22 18:42       ` Andreas Hasenack
2022-11-22 19:39         ` Eric Sunshine
2022-11-22 23:30 ` Andreas Schwab
2022-11-22 23:50   ` Eric Sunshine [this message]
2022-11-23  9:27     ` Andreas Schwab
2022-11-23 19:10       ` Eric Sunshine

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

  List information: http://vger.kernel.org/majordomo-info.html

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

  git send-email \
    --in-reply-to=CAPig+cRchF_6t-B-cZHLHAH_E6qNmapTezSfCj9AZ8cfWNzivw@mail.gmail.com \
    --to=sunshine@sunshineco.com \
    --cc=andreas@canonical.com \
    --cc=git@vger.kernel.org \
    --cc=schwab@linux-m68k.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.
Code repositories for project(s) associated with this public inbox

	https://80x24.org/mirrors/git.git

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 read-only IMAP folder(s) and NNTP newsgroup(s).