1/*- 2 * Copyright (c) 2007-2008 John Birrell (jb@freebsd.org) 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 * 28 * This file contains BSD shims for Sun's DTrace code. 29 */ 30 31#ifndef _SYS_DTRACE_BSD_H 32#define _SYS_DTRACE_BSD_H 33 34/* Forward definitions: */ 35struct mbuf; 36struct trapframe; 37struct thread; 38struct vattr; 39struct vnode; 40struct reg; 41struct devstat; 42struct bio; 43 44/* 45 * The dtrace module handles traps that occur during a DTrace probe. 46 * This type definition is used in the trap handler to provide a 47 * hook for the dtrace module to register it's handler with. 48 */ 49typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int); 50 51int dtrace_trap(struct trapframe *, u_int); 52 53extern dtrace_trap_func_t dtrace_trap_func; 54 55/* 56 * A hook which removes active FBT probes before executing the double fault 57 * handler. We want to ensure that DTrace doesn't trigger another trap, which 58 * would result in a reset. 59 */ 60typedef int (*dtrace_invop_func_t)(uintptr_t, uintptr_t *, uintptr_t); 61typedef void (*dtrace_doubletrap_func_t)(void); 62extern dtrace_invop_func_t dtrace_invop_func; 63extern dtrace_doubletrap_func_t dtrace_doubletrap_func; 64 65/* Pid provider hooks */ 66typedef int (*dtrace_pid_probe_ptr_t)(struct reg *); 67extern dtrace_pid_probe_ptr_t dtrace_pid_probe_ptr; 68typedef int (*dtrace_return_probe_ptr_t)(struct reg *); 69extern dtrace_return_probe_ptr_t dtrace_return_probe_ptr; 70 71/* Virtual time hook function type. */ 72typedef void (*dtrace_vtime_switch_func_t)(struct thread *); 73 74extern int dtrace_vtime_active; 75extern dtrace_vtime_switch_func_t dtrace_vtime_switch_func; 76 77/* The fasttrap module hooks into the fork, exit and exit. */ 78typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *); 79typedef void (*dtrace_execexit_func_t)(struct proc *); 80 81/* Global variable in kern_fork.c */ 82extern dtrace_fork_func_t dtrace_fasttrap_fork; 83 84/* Global variable in kern_exec.c */ 85extern dtrace_execexit_func_t dtrace_fasttrap_exec; 86 87/* Global variable in kern_exit.c */ 88extern dtrace_execexit_func_t dtrace_fasttrap_exit; 89 90/* The dtmalloc provider hooks into malloc. */ 91typedef void (*dtrace_malloc_probe_func_t)(u_int32_t, uintptr_t arg0, 92 uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4); 93 94extern dtrace_malloc_probe_func_t dtrace_malloc_probe; 95 96/* dtnfsclient NFSv[34] access cache provider hooks. */ 97typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t, 98 struct vnode *); 99extern dtrace_nfsclient_accesscache_flush_probe_func_t 100 dtrace_nfsclient_accesscache_flush_done_probe; 101extern dtrace_nfsclient_accesscache_flush_probe_func_t 102 dtrace_nfscl_accesscache_flush_done_probe; 103 104typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t, 105 struct vnode *, uid_t, uint32_t); 106extern dtrace_nfsclient_accesscache_get_probe_func_t 107 dtrace_nfsclient_accesscache_get_hit_probe, 108 dtrace_nfsclient_accesscache_get_miss_probe; 109extern dtrace_nfsclient_accesscache_get_probe_func_t 110 dtrace_nfscl_accesscache_get_hit_probe, 111 dtrace_nfscl_accesscache_get_miss_probe; 112 113typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t, 114 struct vnode *, uid_t, uint32_t, int); 115extern dtrace_nfsclient_accesscache_load_probe_func_t 116 dtrace_nfsclient_accesscache_load_done_probe; 117extern dtrace_nfsclient_accesscache_load_probe_func_t 118 dtrace_nfscl_accesscache_load_done_probe; 119 120/* dtnfsclient NFSv[234] attribute cache provider hooks. */ 121typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t, 122 struct vnode *); 123extern dtrace_nfsclient_attrcache_flush_probe_func_t 124 dtrace_nfsclient_attrcache_flush_done_probe; 125extern dtrace_nfsclient_attrcache_flush_probe_func_t 126 dtrace_nfscl_attrcache_flush_done_probe; 127 128typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t, 129 struct vnode *, struct vattr *); 130extern dtrace_nfsclient_attrcache_get_hit_probe_func_t 131 dtrace_nfsclient_attrcache_get_hit_probe; 132extern dtrace_nfsclient_attrcache_get_hit_probe_func_t 133 dtrace_nfscl_attrcache_get_hit_probe; 134 135typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t, 136 struct vnode *); 137extern dtrace_nfsclient_attrcache_get_miss_probe_func_t 138 dtrace_nfsclient_attrcache_get_miss_probe; 139extern dtrace_nfsclient_attrcache_get_miss_probe_func_t 140 dtrace_nfscl_attrcache_get_miss_probe; 141 142typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t, 143 struct vnode *, struct vattr *, int); 144extern dtrace_nfsclient_attrcache_load_probe_func_t 145 dtrace_nfsclient_attrcache_load_done_probe; 146extern dtrace_nfsclient_attrcache_load_probe_func_t 147 dtrace_nfscl_attrcache_load_done_probe; 148 149/* dtnfsclient NFSv[234] RPC provider hooks. */ 150typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t, 151 struct vnode *, struct mbuf *, struct ucred *, int); 152extern dtrace_nfsclient_nfs23_start_probe_func_t 153 dtrace_nfsclient_nfs23_start_probe; 154extern dtrace_nfsclient_nfs23_start_probe_func_t 155 dtrace_nfscl_nfs234_start_probe; 156 157typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t, 158 struct vnode *, struct mbuf *, struct ucred *, int, int); 159extern dtrace_nfsclient_nfs23_done_probe_func_t 160 dtrace_nfsclient_nfs23_done_probe; 161extern dtrace_nfsclient_nfs23_done_probe_func_t 162 dtrace_nfscl_nfs234_done_probe; 163 164/* IO Provider hooks, really hook into devstat */ 165typedef void (*dtrace_io_start_probe_func_t)(uint32_t, struct bio *, 166 struct devstat *); 167extern dtrace_io_start_probe_func_t dtrace_io_start_probe; 168 169typedef void (*dtrace_io_done_probe_func_t)(uint32_t, struct bio *, 170 struct devstat *); 171extern dtrace_io_done_probe_func_t dtrace_io_done_probe; 172 173typedef void (*dtrace_io_wait_start_probe_func_t)(uint32_t, uintptr_t *, 174 struct devstat *); 175extern dtrace_io_wait_start_probe_func_t dtrace_io_wait_start_probe; 176 177typedef void (*dtrace_io_wait_done_probe_func_t)(uint32_t, uintptr_t *, 178 struct devstat *); 179extern dtrace_io_wait_done_probe_func_t dtrace_io_wait_done_probe; 180 181/* 182 * Functions which allow the dtrace module to check that the kernel 183 * hooks have been compiled with sufficient space for it's private 184 * structures. 185 */ 186size_t kdtrace_proc_size(void); 187size_t kdtrace_thread_size(void); 188 189/* 190 * OpenSolaris compatible time functions returning nanoseconds. 191 * On OpenSolaris these return hrtime_t which we define as uint64_t. 192 */ 193uint64_t dtrace_gethrtime(void); 194uint64_t dtrace_gethrestime(void); 195 196#endif /* _SYS_DTRACE_BSD_H */ 197