1/*- 2 * Copyright 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 * $FreeBSD$ 26 * 27 */ 28#include "opt_kdtrace.h" 29 30#include <sys/cdefs.h> 31#include <sys/types.h> 32#include <sys/param.h> 33#include <sys/systm.h> 34 35#include <sys/conf.h> 36#include <sys/kernel.h> 37#include <sys/module.h> 38#include <sys/sdt.h> 39#include <sys/sysctl.h> 40#include <sys/vnode.h> 41 42SDT_PROVIDER_DEFINE(test); 43 44SDT_PROBE_DEFINE7(test, , , sdttest, sdttest, "int", "int", "int", "int", "int", 45 "int", "int"); 46 47/* 48 * These are variables that the DTrace test suite references in the 49 * Solaris kernel. We define them here so that the tests function 50 * unaltered. 51 */ 52int kmem_flags; 53 54typedef struct vnode vnode_t; 55vnode_t dummy; 56vnode_t *rootvp = &dummy; 57 58/* 59 * Test SDT probes with more than 5 arguments. On amd64, such probes require 60 * special handling since only the first 5 arguments will be passed to 61 * dtrace_probe() in registers; the rest must be fetched off the stack. 62 */ 63static int 64dtrace_test_sdttest(SYSCTL_HANDLER_ARGS) 65{ 66 int val, error; 67 68 val = 0; 69 error = sysctl_handle_int(oidp, &val, 0, req); 70 if (error || req->newptr == NULL) 71 return (error); 72 else if (val == 0) 73 return (0); 74 75 SDT_PROBE7(test, , , sdttest, 1, 2, 3, 4, 5, 6, 7); 76 77 return (error); 78} 79 80static SYSCTL_NODE(_debug, OID_AUTO, dtracetest, CTLFLAG_RD, 0, ""); 81 82SYSCTL_PROC(_debug_dtracetest, OID_AUTO, sdttest, CTLTYPE_INT | CTLFLAG_RW, 83 NULL, 0, dtrace_test_sdttest, "I", "Trigger the SDT test probe"); 84 85static int 86dtrace_test_modevent(module_t mod, int type, void *data) 87{ 88 int error = 0; 89 90 switch (type) { 91 case MOD_LOAD: 92 break; 93 94 case MOD_UNLOAD: 95 break; 96 97 case MOD_SHUTDOWN: 98 break; 99 100 default: 101 error = EOPNOTSUPP; 102 break; 103 104 } 105 return (error); 106} 107 108DEV_MODULE(dtrace_test, dtrace_test_modevent, NULL); 109MODULE_VERSION(dtrace_test, 1); 110MODULE_DEPEND(dtrace_test, dtraceall, 1, 1, 1); 111