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/11.0/sys/sys/dtrace_bsd.h 276142 2014-12-23 15:38:19Z markj $
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
42 int dtrace_trap(struct trapframe *, u_int);
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 its handler with.
48 */
49 typedef int (*dtrace_trap_func_t)(struct trapframe *, u_int);
50 extern dtrace_trap_func_t dtrace_trap_func;
51
52 /*
53 * A hook which removes active FBT probes before executing the double fault
54 * handler. We want to ensure that DTrace doesn't trigger another trap, which
55 * would result in a reset.
56 */
57 typedef void (*dtrace_doubletrap_func_t)(void);
58 extern dtrace_doubletrap_func_t dtrace_doubletrap_func;
59
60 /* Pid provider hooks */
61 typedef int (*dtrace_pid_probe_ptr_t)(struct reg *);
62 extern dtrace_pid_probe_ptr_t dtrace_pid_probe_ptr;
63 typedef int (*dtrace_return_probe_ptr_t)(struct reg *);
64 extern dtrace_return_probe_ptr_t dtrace_return_probe_ptr;
65
66 /* Virtual time hook function type. */
67 typedef void (*dtrace_vtime_switch_func_t)(struct thread *);
68
69 extern int dtrace_vtime_active;
70 extern dtrace_vtime_switch_func_t dtrace_vtime_switch_func;
71
72 /* The fasttrap module hooks into the fork, exit and exit. */
73 typedef void (*dtrace_fork_func_t)(struct proc *, struct proc *);
74 typedef void (*dtrace_execexit_func_t)(struct proc *);
75
76 /* Global variable in kern_fork.c */
77 extern dtrace_fork_func_t dtrace_fasttrap_fork;
78
79 /* Global variable in kern_exec.c */
80 extern dtrace_execexit_func_t dtrace_fasttrap_exec;
81
82 /* Global variable in kern_exit.c */
83 extern dtrace_execexit_func_t dtrace_fasttrap_exit;
84
85 /* The dtmalloc provider hooks into malloc. */
86 typedef void (*dtrace_malloc_probe_func_t)(u_int32_t, uintptr_t arg0,
87 uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
88
89 extern dtrace_malloc_probe_func_t dtrace_malloc_probe;
90
91 /* dtnfsclient NFSv[34] access cache provider hooks. */
92 typedef void (*dtrace_nfsclient_accesscache_flush_probe_func_t)(uint32_t,
93 struct vnode *);
94 extern dtrace_nfsclient_accesscache_flush_probe_func_t
95 dtrace_nfsclient_accesscache_flush_done_probe;
96 extern dtrace_nfsclient_accesscache_flush_probe_func_t
97 dtrace_nfscl_accesscache_flush_done_probe;
98
99 typedef void (*dtrace_nfsclient_accesscache_get_probe_func_t)(uint32_t,
100 struct vnode *, uid_t, uint32_t);
101 extern dtrace_nfsclient_accesscache_get_probe_func_t
102 dtrace_nfsclient_accesscache_get_hit_probe,
103 dtrace_nfsclient_accesscache_get_miss_probe;
104 extern dtrace_nfsclient_accesscache_get_probe_func_t
105 dtrace_nfscl_accesscache_get_hit_probe,
106 dtrace_nfscl_accesscache_get_miss_probe;
107
108 typedef void (*dtrace_nfsclient_accesscache_load_probe_func_t)(uint32_t,
109 struct vnode *, uid_t, uint32_t, int);
110 extern dtrace_nfsclient_accesscache_load_probe_func_t
111 dtrace_nfsclient_accesscache_load_done_probe;
112 extern dtrace_nfsclient_accesscache_load_probe_func_t
113 dtrace_nfscl_accesscache_load_done_probe;
114
115 /* dtnfsclient NFSv[234] attribute cache provider hooks. */
116 typedef void (*dtrace_nfsclient_attrcache_flush_probe_func_t)(uint32_t,
117 struct vnode *);
118 extern dtrace_nfsclient_attrcache_flush_probe_func_t
119 dtrace_nfsclient_attrcache_flush_done_probe;
120 extern dtrace_nfsclient_attrcache_flush_probe_func_t
121 dtrace_nfscl_attrcache_flush_done_probe;
122
123 typedef void (*dtrace_nfsclient_attrcache_get_hit_probe_func_t)(uint32_t,
124 struct vnode *, struct vattr *);
125 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
126 dtrace_nfsclient_attrcache_get_hit_probe;
127 extern dtrace_nfsclient_attrcache_get_hit_probe_func_t
128 dtrace_nfscl_attrcache_get_hit_probe;
129
130 typedef void (*dtrace_nfsclient_attrcache_get_miss_probe_func_t)(uint32_t,
131 struct vnode *);
132 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
133 dtrace_nfsclient_attrcache_get_miss_probe;
134 extern dtrace_nfsclient_attrcache_get_miss_probe_func_t
135 dtrace_nfscl_attrcache_get_miss_probe;
136
137 typedef void (*dtrace_nfsclient_attrcache_load_probe_func_t)(uint32_t,
138 struct vnode *, struct vattr *, int);
139 extern dtrace_nfsclient_attrcache_load_probe_func_t
140 dtrace_nfsclient_attrcache_load_done_probe;
141 extern dtrace_nfsclient_attrcache_load_probe_func_t
142 dtrace_nfscl_attrcache_load_done_probe;
143
144 /* dtnfsclient NFSv[234] RPC provider hooks. */
145 typedef void (*dtrace_nfsclient_nfs23_start_probe_func_t)(uint32_t,
146 struct vnode *, struct mbuf *, struct ucred *, int);
147 extern dtrace_nfsclient_nfs23_start_probe_func_t
148 dtrace_nfsclient_nfs23_start_probe;
149 extern dtrace_nfsclient_nfs23_start_probe_func_t
150 dtrace_nfscl_nfs234_start_probe;
151
152 typedef void (*dtrace_nfsclient_nfs23_done_probe_func_t)(uint32_t,
153 struct vnode *, struct mbuf *, struct ucred *, int, int);
154 extern dtrace_nfsclient_nfs23_done_probe_func_t
155 dtrace_nfsclient_nfs23_done_probe;
156 extern dtrace_nfsclient_nfs23_done_probe_func_t
157 dtrace_nfscl_nfs234_done_probe;
158
159 /*
160 * Functions which allow the dtrace module to check that the kernel
161 * hooks have been compiled with sufficient space for it's private
162 * structures.
163 */
164 size_t kdtrace_proc_size(void);
165 size_t kdtrace_thread_size(void);
166
167 /*
168 * OpenSolaris compatible time functions returning nanoseconds.
169 * On OpenSolaris these return hrtime_t which we define as uint64_t.
170 */
171 uint64_t dtrace_gethrtime(void);
172 uint64_t dtrace_gethrestime(void);
173
174 #endif /* _SYS_DTRACE_BSD_H */
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