[lttng-dev] What are sys calls starting with compat?

Thibault, Daniel Daniel.Thibault at drdc-rddc.gc.ca
Wed Dec 11 09:23:15 EST 2013


> > Date: Tue, 10 Dec 2013 11:39:40 -0800
> > What does sys_unknown mean and why does it occur? Does it mean that LTTng cannot find the name of a system call?
> >
> Yes. It means the ID of the system call is unknown to LTTng (e.g. kernel newer than LTTng system call instrumentation). 

   You can also get sys_ni_syscall (and compat_sys_ni_syscall) when the system call is even more unknown -that is to say, when the system call number cannot be found in the system call dispatch table.

Daniel U. Thibault
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