Tracing - how can I know which method was called

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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

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