FreeBSD/Linux Kernel Cross Reference
sys/sys/dtrace_bsd.h
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: releng/10.4/sys/sys/dtrace_bsd.h 282748 2015-05-11 07:54:39Z avg $
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: */
35 struct mbuf;
36 struct trapframe;
37 struct thread;
38 struct vattr;
39 struct vnode;
40 struct reg;
41 struct devstat;
42 struct 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 */
49 typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int);
50
51 int dtrace_trap(struct trapframe *, u_int);
52
53 extern 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 */
60 typedef int (*dtrace_invop_func_t)(uintptr_t, uintptr_t *, uintptr_t);
61 typedef void (*dtrace_doubletrap_func_t)(void);
62 extern dtrace_invop_func_t dtrace_invop_func;
63 extern dtrace_doubletrap_func_t dtrace_doubletrap_func;
64
65 /* Pid provider hooks */
66 typedef int (*dtrace_pid_probe_ptr_t)(struct reg *);
67 extern dtrace_pid_probe_ptr_t dtrace_pid_probe_ptr;
68 typedef int (*dtrace_return_probe_ptr_t)(struct reg *);
69 extern dtrace_return_probe_ptr_t dtrace_return_probe_ptr;
70
71 /* Virtual time hook function type. */
72 typedef void (*dtrace_vtime_switch_func_t)(struct thread *);
73
74 extern int dtrace_vtime_active;
75 extern dtrace_vtime_switch_func_t dtrace_vtime_switch_func;
76
77 /* The fasttrap module hooks into the fork, exit and exit. */
78 typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *);
79 typedef void (*dtrace_execexit_func_t)(struct proc *);
80
81 /* Global variable in kern_fork.c */
82 extern dtrace_fork_func_t dtrace_fasttrap_fork;
83
84 /* Global variable in kern_exec.c */
85 extern dtrace_execexit_func_t dtrace_fasttrap_exec;
86
87 /* Global variable in kern_exit.c */
88 extern dtrace_execexit_func_t dtrace_fasttrap_exit;
89
90 /* The dtmalloc provider hooks into malloc. */
91 typedef 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
94 extern dtrace_malloc_probe_func_t dtrace_malloc_probe;
95
96 /* dtnfsclient NFSv[34] access cache provider hooks. */
97 typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t,
98 struct vnode *);
99 extern dtrace_nfsclient_accesscache_flush_probe_func_t
100 dtrace_nfsclient_accesscache_flush_done_probe;
101 extern dtrace_nfsclient_accesscache_flush_probe_func_t
102 dtrace_nfscl_accesscache_flush_done_probe;
103
104 typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t,
105 struct vnode *, uid_t, uint32_t);
106 extern dtrace_nfsclient_accesscache_get_probe_func_t
107 dtrace_nfsclient_accesscache_get_hit_probe,
108 dtrace_nfsclient_accesscache_get_miss_probe;
109 extern dtrace_nfsclient_accesscache_get_probe_func_t
110 dtrace_nfscl_accesscache_get_hit_probe,
111 dtrace_nfscl_accesscache_get_miss_probe;
112
113 typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t,
114 struct vnode *, uid_t, uint32_t, int);
115 extern dtrace_nfsclient_accesscache_load_probe_func_t
116 dtrace_nfsclient_accesscache_load_done_probe;
117 extern dtrace_nfsclient_accesscache_load_probe_func_t
118 dtrace_nfscl_accesscache_load_done_probe;
119
120 /* dtnfsclient NFSv[234] attribute cache provider hooks. */
121 typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t,
122 struct vnode *);
123 extern dtrace_nfsclient_attrcache_flush_probe_func_t
124 dtrace_nfsclient_attrcache_flush_done_probe;
125 extern dtrace_nfsclient_attrcache_flush_probe_func_t
126 dtrace_nfscl_attrcache_flush_done_probe;
127
128 typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t,
129 struct vnode *, struct vattr *);
130 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
131 dtrace_nfsclient_attrcache_get_hit_probe;
132 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
133 dtrace_nfscl_attrcache_get_hit_probe;
134
135 typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t,
136 struct vnode *);
137 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
138 dtrace_nfsclient_attrcache_get_miss_probe;
139 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
140 dtrace_nfscl_attrcache_get_miss_probe;
141
142 typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t,
143 struct vnode *, struct vattr *, int);
144 extern dtrace_nfsclient_attrcache_load_probe_func_t
145 dtrace_nfsclient_attrcache_load_done_probe;
146 extern dtrace_nfsclient_attrcache_load_probe_func_t
147 dtrace_nfscl_attrcache_load_done_probe;
148
149 /* dtnfsclient NFSv[234] RPC provider hooks. */
150 typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t,
151 struct vnode *, struct mbuf *, struct ucred *, int);
152 extern dtrace_nfsclient_nfs23_start_probe_func_t
153 dtrace_nfsclient_nfs23_start_probe;
154 extern dtrace_nfsclient_nfs23_start_probe_func_t
155 dtrace_nfscl_nfs234_start_probe;
156
157 typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t,
158 struct vnode *, struct mbuf *, struct ucred *, int, int);
159 extern dtrace_nfsclient_nfs23_done_probe_func_t
160 dtrace_nfsclient_nfs23_done_probe;
161 extern dtrace_nfsclient_nfs23_done_probe_func_t
162 dtrace_nfscl_nfs234_done_probe;
163
164 /* IO Provider hooks, really hook into devstat */
165 typedef void (*dtrace_io_start_probe_func_t)(uint32_t, struct bio *,
166 struct devstat *);
167 extern dtrace_io_start_probe_func_t dtrace_io_start_probe;
168
169 typedef void (*dtrace_io_done_probe_func_t)(uint32_t, struct bio *,
170 struct devstat *);
171 extern dtrace_io_done_probe_func_t dtrace_io_done_probe;
172
173 typedef void (*dtrace_io_wait_start_probe_func_t)(uint32_t, uintptr_t *,
174 struct devstat *);
175 extern dtrace_io_wait_start_probe_func_t dtrace_io_wait_start_probe;
176
177 typedef void (*dtrace_io_wait_done_probe_func_t)(uint32_t, uintptr_t *,
178 struct devstat *);
179 extern 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 */
186 size_t kdtrace_proc_size(void);
187 size_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 */
193 uint64_t dtrace_gethrtime(void);
194 uint64_t dtrace_gethrestime(void);
195
196 #endif /* _SYS_DTRACE_BSD_H */
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