Re: [PATCH 2/3] netpoll: netconsole
From: Andi Kleen
Date: Wed Sep 10 2003 - 03:14:29 EST
Matt Mackall <mpm@xxxxxxxxxxx> 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.
-
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