From: Ingo Molnar <mingo@elte.hu>
To: Daniel Walker <dwalker@mvista.com>
Cc: rostedt@goodmis.org, linux-kernel@vger.kernel.org
Subject: Re: PREEMPT_RT with e1000
Date: Thu, 1 Sep 2005 08:49:03 +0200 [thread overview]
Message-ID: <20050901064902.GA5179@elte.hu> (raw)
In-Reply-To: <1125518602.15034.3.camel@dhcp153.mvista.com>
* Daniel Walker <dwalker@mvista.com> wrote:
> It looks like Gigabit Ethernet is still having some problems. This is
> with the e1000 driver. If I remove all the qdisc_restart changes it
> starts to work the warning below goes away, but it has
> smp_processor_id warnings.
hmmm. The thing to watch out for there is dev->xmit_lock_owner - it's a
"spin lock does not preempt" assumption that is open-coded. What the
qdisc_restart changes do is to remove this assumption. Perhaps it would
be enough to just keep the trylock logic, and to mute the
xmit_lock_owner logic.
Ingo
next prev parent reply other threads:[~2005-09-01 6:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-31 20:03 PREEMPT_RT with e1000 Daniel Walker
2005-09-01 6:49 ` Ingo Molnar [this message]
2005-09-01 7:10 ` Ingo Molnar
2005-09-01 14:43 ` Daniel Walker
2005-09-01 15:07 ` Daniel Walker
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=20050901064902.GA5179@elte.hu \
--to=mingo@elte.hu \
--cc=dwalker@mvista.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rostedt@goodmis.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