From: compudj@krystal.dyndns.org (Mathieu Desnoyers)
Subject: [ltt-dev] the problem of register the probe function for irq_enty
Date: Thu, 5 Mar 2009 13:45:08 -0500 [thread overview]
Message-ID: <20090305184508.GA6605@Krystal> (raw)
In-Reply-To: <abc09c160903050844u228ad1b6h7511db8d9b961fb8@mail.gmail.com>
* long xu (long.x.xu at gmail.com) wrote:
> Hello,
>
> i'm reading the code of lttng now, i kown the programe use
> ---------------------------------------------
> DEFINE_MARKER_TP(kernel, irq_entry, irq_entry, probe_irq_entry, "ip %lu
> irq_id #2u%u kernel_mode #1u%u");----------------------------------------
> to give the pointer of tracepoint probe function to the marker. But i have
> not found how does it connect the probe_irq_entry to the tracepoint. i
> don't find where it use the function register_trace_irq_entry to register
> the probe function.
>
See kernel/marker.c :
set_marker()
call to tracepoint_probe_register_noupdate(). Basically, it's the marker
infrastructure which is responsible for iterating on the marker section
of core kernel and module to connect them to tracepoints.
Mathieu
> Thanks,
>
> Best regard
>
> XU Long
> _______________________________________________
> ltt-dev mailing list
> ltt-dev at lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
prev parent reply other threads:[~2009-03-05 18:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-05 16:44 long xu
2009-03-05 16:44 ` long xu
2009-03-05 16:44 ` long xu
2009-03-05 18:45 ` Mathieu Desnoyers [this message]
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