kern_sdt.c revision 262058 
1/*-
2 * Copyright 2006-2008 John Birrell <jb@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: stable/10/sys/kern/kern_sdt.c 262058 2014-02-17 14:47:52Z avg $
26 */
27
28#include "opt_kdtrace.h"
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/sdt.h>
33
34SDT_PROVIDER_DEFINE(sdt);
35
36/*
37 * Hook for the DTrace probe function. The SDT provider will set this to
38 * dtrace_probe() when it loads.
39 */
40sdt_probe_func_t sdt_probe_func = sdt_probe_stub;
41
42/*
43 * This is a stub for probe calls in case kernel DTrace support isn't
44 * enabled. It should never get called because there is no DTrace support
45 * to enable it.
46 */
47void
48sdt_probe_stub(uint32_t id, uintptr_t arg0, uintptr_t arg1,
49    uintptr_t arg2, uintptr_t arg3, uintptr_t arg4)
50{
51
52	printf("sdt_probe_stub: Why did this get called?\n");
53}
54