Re: [PATCH] netconsole: queue console messages to send later

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From: Matt Mackall
Date: Monday, June 7, 2010 - 12:50 pm

On Mon, 2010-06-07 at 16:24 -0300, Flavio Leitner wrote:

This is an ongoing pain we've known about since before introducing the
netpoll code to the tree.

My take has always been that any form of queueing is contrary to the
goal of netpoll: timely delivery of messages even during machine-killing
situations like oopses. There may never be a second chance to deliver
the message as the machine may be locked solid. And there may be no
other way to get the message out of the box in such situations. Adding
queueing is a throwing-the-baby-out-with-the-bathwater fix.

I think Dave agrees with me here, and I believe he's said in the past
that drivers trying to print messages in such contexts should be
considered buggy.

-- 
Mathematics is the supreme nostalgia of our time.


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Messages in current thread:
[v5 Patch 2/3] bridge: make bridge support netpoll, Amerigo Wang, (Wed May 5, 1:11 am)
[v5 Patch 3/3] bonding: make bonding support netpoll, Amerigo Wang, (Wed May 5, 1:11 am)
[PATCH] netconsole: queue console messages to send later, Flavio Leitner, (Mon Jun 7, 12:24 pm)
Re: [PATCH] netconsole: queue console messages to send later, Matt Mackall, (Mon Jun 7, 12:50 pm)
Re: [PATCH] netconsole: queue console messages to send later, Stephen Hemminger, (Mon Jun 7, 1:00 pm)