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<tt>Hi Emy, <br>
<br>
I'm a bit confused by your question, are you trying to modify an
obsolete system call let's say you want to instrument old code, it
should be moderately staightforward with kprobe. Lttng can read
the kprobes after. <br>
<br>
Lttng can read the probes like this<br>
<a class="moz-txt-link-freetext" href="http://lwn.net/Articles/491510/">http://lwn.net/Articles/491510/</a><br>
here's some more info on kprobes<br>
<a class="moz-txt-link-freetext" href="https://www.kernel.org/doc/Documentation/kprobes.txt">https://www.kernel.org/doc/Documentation/kprobes.txt</a><br>
<br>
Hope this helps.<br>
Matt<br>
<br>
<br>
</tt>
<div class="moz-cite-prefix">On 13-07-10 05:51 PM, emy moore wrote:<br>
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<div>hi all<br>
<br>
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i try to understand how a system call is implemented so i do
some modification in an obsolete system call.<br>
<br>
</div>
i want to know can i trace this system call using lttng knowing
that it's an obsolete one ? if no how can i activate it's trace
?<br>
<br>
<br>
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