From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Date: Sun, 30 Aug 2009 20:10:43 +0000 (+0000)
Subject: drop_monitor: fix trace_napi_poll_hit()
X-Git-Tag: v2.6.32-rc1~703^2~154
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2798eb4e01b095f273f4bf40f511c9d69c0e1da;p=pandora-kernel.git

drop_monitor: fix trace_napi_poll_hit()

The net_dev of backlog napi is NULL, like below:

__get_cpu_var(softnet_data).backlog.dev == NULL

So, we should check it in napi tracepoint's probe function

Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

Reading git-diff-tree failed