mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Emmanuel Michon <emmanuel_michon@realmagic.fr>
To: linux-kernel@vger.kernel.org
Subject: module programming smp-safety howto?
Date: 10 Apr 2002 12:03:23 +0200	[thread overview]
Message-ID: <7w7knf98gk.fsf@avalon.france.sdesigns.com> (raw)

Hi,

I'm responsible for the development of a kernel module for Sigma
Designs EM84xx PCI chips (MPEG2 and MPEG4 hardware decoder
boards). It's working properly now, irq sharing and multiple board
support is ok.

I would like to make it smp-safe.

For instance, I use at a place cli()/restore to implement something that
looks like a critical section (first code path is in a ioctl, second
in a irq top half). I guess this approach is wrong with smp.

Is there some documentation or howto about what changes compared
to non-smp computers?

Maybe a specific kernel module can be considered as a good model?

Sincerely yours,

-- 
Emmanuel Michon
Chef de projet
REALmagic France SAS
Mobile: 0614372733 GPGkeyID: D2997E42  

             reply	other threads:[~2002-04-10 10:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-04-10 10:03 Emmanuel Michon [this message]
2002-04-10 10:49 ` Erik Mouw
2002-04-10 13:33 ` Anton Altaparmakov
2002-04-10 16:42   ` Emmanuel Michon
2002-04-14 13:11     ` pjd

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=7w7knf98gk.fsf@avalon.france.sdesigns.com \
    --to=emmanuel_michon@realmagic.fr \
    --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
all inboxes | Powered by JetHome®