<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><hr id="zwchr"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Shariyar" <syed.shariyar@gmail.com><br><b>To: </b>lttng-dev@lists.lttng.org<br><b>Sent: </b>Tuesday, December 10, 2013 2:39:40 PM<br><b>Subject: </b>Re: [lttng-dev] What are sys calls starting with compat?<br><div><br></div><div dir="ltr"><div>What does sys_unknown mean and why doe it occur? Does it mean that LTTng can not find the name of system call?</div></div></blockquote><div><br></div><div>Yes. It means the ID of the system call is unknown to LTTng (e.g. kernel newer than LTTng system call instrumentation).<br></div><div><br></div><div>Thanks,<br></div><div><br></div><div>Mathieu<br></div><div><br></div><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><div dir="ltr"><div><div><br></div></div>Regards,<br><div><div>Shariyar<br></div><div>------------------------------<br><br>
Message: 2<br>
Date: <span class=""><span class="">Tue, 10 Dec 2013 15:31:19 +0000</span></span> (UTC)<br>
From: Mathieu Desnoyers <<a href="mailto:mathieu.desnoyers@efficios.com" target="_blank">mathieu.desnoyers@efficios.com</a>><br>
To: Daniel Thibault <<a href="mailto:Daniel.Thibault@drdc-rddc.gc.ca" target="_blank">Daniel.Thibault@drdc-rddc.gc.ca</a>><br>
Cc: <a href="mailto:lttng-dev@lists.lttng.org" target="_blank">lttng-dev@lists.lttng.org</a><br>
Subject: Re: [lttng-dev] What are sys calls starting with compat?<br>
Message-ID:<br>
<<a href="mailto:1571110803.82672.1386689479225.JavaMail.zimbra@efficios.com" target="_blank">1571110803.82672.1386689479225.JavaMail.zimbra@efficios.com</a>><br>
Content-Type: text/plain; charset=utf-8<br><br>
----- Original Message -----<br>
> From: "Daniel Thibault" <<a href="mailto:Daniel.Thibault@drdc-rddc.gc.ca" target="_blank">Daniel.Thibault@drdc-rddc.gc.ca</a>><br>
> To: <a href="mailto:lttng-dev@lists.lttng.org" target="_blank">lttng-dev@lists.lttng.org</a><br>
> Cc: "Mathieu Desnoyers" <<a href="mailto:mathieu.desnoyers@efficios.com" target="_blank">mathieu.desnoyers@efficios.com</a>><br>
> Sent: Tuesday, December 10, 2013 9:57:21 AM<br>
> Subject: Re: [lttng-dev] What are sys calls starting with compat?<br>
><br>
> > Date: <span class=""><span class="">Tue, 10 Dec 2013 01:55:48 +0000</span></span> (UTC)<br>
> ><br>
> > System calls with "compat" prefix are for e.g. 32-bit processes running on<br>
> > a 64-bit kernel:<br>
> > those processes are using a different system call table (ia32 for Intel)<br>
> > than 64-bit processes,<br>
> > and therefore those system calls are named "compat_*" by LTTng.<br>
> ><br>
> > Mathieu<br>
><br>
> I presume the LTTng event names will also be prefixed with "compat_".<br><br>
Yes.<br><br>
> For<br>
> instance, "compat_sys_rmdir".<br><br>
Yes.<br><br>
> Or would it be "sys_compat_rmdir"?<br><br>
No.<br><br>
> And<br>
> what of the exit_syscall and sys_unknown events?<br><br>
exit_syscall has no compat prefix as I recall.<br><br>
compat_sys_unknown.<br><br>
Thanks,<br><br>
Mathieu</div></div></div><br>_______________________________________________<br>lttng-dev mailing list<br>lttng-dev@lists.lttng.org<br>http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev<br></blockquote><div><br><br></div><div><br></div><div>-- <br></div><div><span name="x"></span>Mathieu Desnoyers<br>EfficiOS Inc.<br>http://www.efficios.com<span name="x"></span><br></div></div></body></html>