2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright 2006-2008 John Birrell <jb@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/param.h>
31 #include <sys/systm.h>
35 SDT_PROVIDER_DEFINE(sdt);
38 * Hook for the DTrace probe function. The SDT provider will set this to
39 * dtrace_probe() when it loads.
41 sdt_probe_func_t sdt_probe_func = sdt_probe_stub;
42 volatile bool __read_frequently sdt_probes_enabled;
45 * This is a stub for probe calls in case kernel DTrace support isn't
46 * enabled. It should never get called because there is no DTrace support
50 sdt_probe_stub(uint32_t id, uintptr_t arg0, uintptr_t arg1,
51 uintptr_t arg2, uintptr_t arg3, uintptr_t arg4)
54 printf("sdt_probe_stub: unexpectedly called\n");