From mboxrd@z Thu Jan  1 00:00:00 1970
From: wkevils@gmail.com (Kevin Wilson)
Date: Mon, 18 Feb 2013 17:55:00 +0200
Subject: Tracing - how can I know which method was called
Message-ID: <CAGXs5wV64WunFw5UJ=D=1uCzTgYAWgjCohy3t+Z5Tf_yvdoWtw@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

Hi,
I added a network event trace thus:

echo 1 >  /sys/kernel/debug/tracing/events/net/net_dev_xmit/enable

Afterwards I see many lines with net_dev_xmit in /sys/kernel/debug/tracing.


Now, looking in the source code,  I see that there are two calls to
trace_net_dev_xmit() in
dev_hard_start_xmit().  These invocations are identical.

see:
http://lxr.free-electrons.com/source/net/core/dev.c?v=2.6.37

Is there a way in which I can make the log say which of these
invocations was called ?
(without changing the dev_hard_start_xmit() method).


rgs,
Kevin