netdev - mac80211: NOHZ: local_softirq

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Message-Id: <200909111648.50902.mb@bu3sch.de>
Date:	Fri, 11 Sep 2009 16:48:49 +0200
From:	Michael Buesch <mb@...sch.de>
To:	linux-wireless@...r.kernel.org
Cc:	netdev@...r.kernel.org, Kalle.Valo@....fi,
	Johannes Berg <johannes@...solutions.net>
Subject: mac80211: NOHZ: local_softirq_pending 08

Hi,

mac80211 (or some other part of the networking stack) triggers this warning
in the NOHZ code:
NOHZ: local_softirq_pending 08

08 seems to be NET_RX_SOFTIRQ.

It happens, because my test driver b43 handles all RX and TX-status callbacks in
process context. I guess some part of the networking stack expects RX to be in
tasklet and/or softirq context.

We also have a report of this warning in wl1251, so it's probably not a b43 problem.

-- 
Greetings, Michael.
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