From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Thu, 10 Jun 2010 16:12:49 +0000 (+0000)
Subject: netpoll: Add netpoll_tx_running
X-Git-Tag: v2.6.36-rc1~571^2~583
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c18370f5b2949d9cca519355f33690b75e1e7c8b;p=pandora-kernel.git

netpoll: Add netpoll_tx_running

This patch adds the helper netpoll_tx_running for use within
ndo_start_xmit.  It returns non-zero if ndo_start_xmit is being
invoked by netpoll, and zero otherwise.

This is currently implemented by simply looking at the hardirq
count.  This is because for all non-netpoll uses of ndo_start_xmit,
IRQs must be enabled while netpoll always disables IRQs before
calling ndo_start_xmit.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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