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
next prev parent 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
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