From: Andi Kleen <ak@suse.de>
To: Matt Mackall <mpm@selenic.com>
Cc: linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: Re: [PATCH 2/3] netpoll: netconsole
Date: 10 Sep 2003 10:11:42 +0200 [thread overview]
Message-ID: <p73znhdhxkx.fsf@oldwotan.suse.de> (raw)
In-Reply-To: <20030910074256.GD4489@waste.org.suse.lists.linux.kernel>
Matt Mackall <mpm@selenic.com> writes:
> This patch uses the netpoll API to transmit kernel printks over UDP
> for uses similar to serial console.
One common problem I saw with the original netconsole patches
was that the low level drivers' poll function was grabbing the
driver spinlock, but the driver would otherwere do printk
with the spinlock hold (->easy deadlock)
Does your patchkit handle that?
I worked around it in some drivers by not grabbing the lock
in the direct access poll path, but it's a bit ugly.
-Andi
P.S.: Also what would be really nice for netconsole
would be "kernel ifconfig" similar to what the nfsroot code does.
With that it would be actually possible to use it as a full console
replacement.
next parent reply other threads:[~2003-09-10 8:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20030910074256.GD4489@waste.org.suse.lists.linux.kernel>
2003-09-10 8:11 ` Andi Kleen [this message]
2003-09-10 8:24 ` Matt Mackall
2003-09-10 8:29 ` Andi Kleen
2003-09-10 9:01 ` Matt Mackall
2003-09-10 16:00 ` Mitchell Blank Jr
2003-09-12 5:33 ` Mitchell Blank Jr
2003-09-12 5:57 ` Matt Mackall
2003-09-12 19:40 ` Andrew Morton
2003-09-10 7:42 Matt Mackall
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