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To: freebsd-dtrace@freebsd.org, freebsd-current <freebsd-current@freebsd.org>
From: Julian Elischer <julian@freebsd.org>
Subject: dtrace and kernel modules
Message-ID: <d99a41d6-fe55-fb09-4466-c1d8082a40d6@freebsd.org>
Date: Thu, 7 Jul 2016 12:51:52 +0800
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I'm specifically interested in the case of kernel modules that 
instantiate new syscalls.

How much support do we have for that?  In the one example in our 
sources of a kld with a syscall (kgssapi.ko) dtrace seems to find 
regular function entrypoints but not the syscall.


root@porridge:/usr/src # dtrace -n ":kgssapi::entry {}"
dtrace: description ':kgssapi::entry ' matched 138 probes
^C

root@porridge:/usr/src # dtrace -n "syscall:kgssapi::entry {}"
dtrace: invalid probe specifier syscall:kgssapi::entry {}: probe 
description syscall:kgssapi::entry does not match any probes
root@porridge:/usr/src #


Do we have plans to support dynamic syscall support?