<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?<br><br></div>Regards,<br><div><div>Shariyar<br></div><div>------------------------------<br>
<br>
Message: 2<br>
Date: <span tabindex="0" 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">mathieu.desnoyers@efficios.com</a>><br>
To: Daniel Thibault <<a href="mailto:Daniel.Thibault@drdc-rddc.gc.ca">Daniel.Thibault@drdc-rddc.gc.ca</a>><br>
Cc: <a href="mailto:lttng-dev@lists.lttng.org">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">1571110803.82672.1386689479225.JavaMail.zimbra@efficios.com</a>><br>
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<br>
----- Original Message -----<br>
> From: "Daniel Thibault" <<a href="mailto:Daniel.Thibault@drdc-rddc.gc.ca">Daniel.Thibault@drdc-rddc.gc.ca</a>><br>
> To: <a href="mailto:lttng-dev@lists.lttng.org">lttng-dev@lists.lttng.org</a><br>
> Cc: "Mathieu Desnoyers" <<a href="mailto:mathieu.desnoyers@efficios.com">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 tabindex="0" 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>