Re: [PATCH 2/3] netpoll: netconsole

[Andi Kleen]

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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