netdev - [PATCH] net: fix NOHZ: local_softirq

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Message-ID: <4AC3A0F1.3060306@hartkopp.net>
Date:	Wed, 30 Sep 2009 20:18:25 +0200
From:	Oliver Hartkopp <oliver@...tkopp.net>
To:	David Miller <davem@...emloft.net>
CC:	Johannes Berg <johannes@...solutions.net>,
	Michael Buesch <mb@...sch.de>, Kalle Valo <kalle.valo@....fi>,
	"John W. Linville" <linville@...driver.com>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH] net: fix NOHZ: local_softirq_pending 08

Socket buffers that are generated and received inside softirqs or from process
context must not use netif_rx() that's intended to be used from irq context only.

This patch introduces a new helper function netif_rx_ti(skb) that tests for
in_interrupt() before invoking netif_rx() or netif_rx_ni().

It fixes the ratelimited kernel warning

        NOHZ: local_softirq_pending 08

in the mac80211 and can subsystems.

Signed-off-by: Oliver Hartkopp <oliver@...tkopp.net>

---

View attachment "net-NOHZ-local_softirq_pending-08.patch" of type "text/x-patch" (4032 bytes)