netdev - Re: [RFC PATCH 0/2] remove netpoll rx support

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Message-Id: <20140311.124907.1180556684992271103.davem@davemloft.net>
Date:	Tue, 11 Mar 2014 12:49:07 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ebiederm@...ssion.com
Cc:	eric.dumazet@...il.com, netdev@...r.kernel.org,
	xiyou.wangcong@...il.com, mpm@...enic.com, satyam.sharma@...il.com
Subject: Re: [RFC PATCH 0/2] remove netpoll rx support

From: ebiederm@...ssion.com (Eric W. Biederman)
Date: Tue, 11 Mar 2014 01:43:10 -0700

> Furthermore netpoll by it's design depends on the ability to receive
> packets in netpoll_poll_dev.  It is a capability I don't think we have
> ever used in the mainline kernel but it is a capability that is there
> deliberately.  Which means if we want netpoll to not mess with the rx
> path we need to change netpoll.

This breaks kdump, and any other users of netpoll_rx() et al.

Make the zero budget depend upon us being invoked from hardware
irq context, or something like that.

Thanks.
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