mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Jeff Moyer <jmoyer@redhat.com>
To: "Jon Smirl" <jonsmirl@gmail.com>
Cc: lkml <linux-kernel@vger.kernel.org>, dhowells@redhat.com
Subject: Re: netconsole and a serial one
Date: Mon, 22 Sep 2008 09:19:57 -0400	[thread overview]
Message-ID: <x498wtkl3lu.fsf@segfault.boston.devel.redhat.com> (raw)
In-Reply-To: <9e4733910809211714j5d79592cj162f8be4ecebaa78@mail.gmail.com> (Jon Smirl's message of "Sun, 21 Sep 2008 20:14:34 -0400")

"Jon Smirl" <jonsmirl@gmail.com> writes:

> I have both netconsole and a serial console setup on an embedded
> system. This is what I need for the boot process.
>
> After I'm booted I want to turn off printk() output to the serial
> console but keep it going to netconsole.
> I've been googling for an hour, how do I do this?
>
> I need to turn off the serial output after boot because serial
> printk() disables interrupts for up to 1ms which is enough to cause me
> to lose a lot of other interrupts.

There's no way (that I know of) to do this presently.  However, I think
David Howells has been working on a patch that reduces the amount of
time printk spends with IRQs disabled.

David?

Cheers,

Jeff

  reply	other threads:[~2008-09-22 13:20 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-22  0:14 Jon Smirl
2008-09-22 13:19 ` Jeff Moyer [this message]
2008-09-22 13:23   ` Jon Smirl

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=x498wtkl3lu.fsf@segfault.boston.devel.redhat.com \
    --to=jmoyer@redhat.com \
    --cc=dhowells@redhat.com \
    --cc=jonsmirl@gmail.com \
    --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®