FreeBSD/Linux Kernel Cross Reference
sys/sys/ktr.h
1 /*-
2 * Copyright (c) 1996 Berkeley Software Design, Inc. All rights reserved.
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 * 3. Berkeley Software Design Inc's name may not be used to endorse or
13 * promote products derived from this software without specific prior
14 * written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * from BSDI $Id: ktr.h,v 1.10.2.7 2000/03/16 21:44:42 cp Exp $
29 * $FreeBSD: releng/5.2/sys/sys/ktr.h 112109 2003-03-11 20:07:22Z jhb $
30 */
31
32 /*
33 * Wraparound kernel trace buffer support.
34 */
35
36 #ifndef _SYS_KTR_H_
37 #define _SYS_KTR_H_
38
39 /*
40 * Hack around due to egcs-1.1.2 not knowing what __func__ is.
41 */
42 #ifdef __GNUC__
43 #if __GNUC__ == 2 && __GNUC_MINOR__ == 91 /* egcs 1.1.2 */
44 #define __func__ __FUNCTION__
45 #endif
46 #endif
47
48 /*
49 * Trace classes
50 */
51 #define KTR_GEN 0x00000001 /* General (TR) */
52 #define KTR_NET 0x00000002 /* Network */
53 #define KTR_DEV 0x00000004 /* Device driver */
54 #define KTR_LOCK 0x00000008 /* MP locking */
55 #define KTR_SMP 0x00000010 /* MP general */
56 #define KTR_FS 0x00000020 /* Filesystem */
57 #define KTR_PMAP 0x00000040 /* Pmap tracing */
58 #define KTR_MALLOC 0x00000080 /* Malloc tracing */
59 #define KTR_TRAP 0x00000100 /* Trap processing */
60 #define KTR_INTR 0x00000200 /* Interrupt tracing */
61 #define KTR_SIG 0x00000400 /* Signal processing */
62 #define KTR_CLK 0x00000800 /* hardclock verbose */
63 #define KTR_PROC 0x00001000 /* Process scheduling */
64 #define KTR_SYSC 0x00002000 /* System call */
65 #define KTR_INIT 0x00004000 /* System initialization */
66 #define KTR_KGDB 0x00008000 /* Trace kgdb internals */
67 #define KTR_IO 0x00010000 /* Upper I/O */
68 #define KTR_EVH 0x00020000 /* Eventhandler */
69 #define KTR_NFS 0x00040000 /* The obvious */
70 #define KTR_VOP 0x00080000 /* The obvious */
71 #define KTR_VM 0x00100000 /* The virtual memory system */
72 #define KTR_WITNESS 0x00200000
73 #define KTR_RUNQ 0x00400000 /* Run queue */
74 #define KTR_CONTENTION 0x00800000 /* Lock contention */
75 #define KTR_ALL 0x00ffffff
76
77 /*
78 * Trace classes which can be assigned to particular use at compile time
79 * These must remain in high 22 as some assembly code counts on it
80 */
81 #define KTR_CT1 0x01000000
82 #define KTR_CT2 0x02000000
83 #define KTR_CT3 0x04000000
84 #define KTR_CT4 0x08000000
85 #define KTR_CT5 0x10000000
86 #define KTR_CT6 0x20000000
87 #define KTR_CT7 0x40000000
88 #define KTR_CT8 0x80000000
89
90 /* Trace classes to compile in */
91 #ifndef KTR_COMPILE
92 #define KTR_COMPILE (KTR_GEN)
93 #endif
94
95 /* Trace classes that can not be used with KTR_ALQ */
96 #define KTR_ALQ_MASK (KTR_WITNESS)
97
98 /*
99 * Version number for ktr_entry struct. Increment this when you break binary
100 * compatibility.
101 */
102 #define KTR_VERSION 1
103
104 #define KTR_PARMS 6
105
106 #ifndef LOCORE
107
108 struct ktr_entry {
109 u_int64_t ktr_timestamp;
110 int ktr_cpu;
111 int ktr_line;
112 const char *ktr_file;
113 const char *ktr_desc;
114 u_long ktr_parms[KTR_PARMS];
115 };
116
117 extern int ktr_cpumask;
118 extern int ktr_mask;
119 extern int ktr_entries;
120 extern int ktr_verbose;
121
122 extern volatile int ktr_idx;
123 extern struct ktr_entry ktr_buf[];
124
125 #endif /* !LOCORE */
126 #ifdef KTR
127
128 void ktr_tracepoint(u_int mask, const char *file, int line,
129 const char *format, u_long arg1, u_long arg2, u_long arg3,
130 u_long arg4, u_long arg5, u_long arg6);
131
132 #define CTR6(m, format, p1, p2, p3, p4, p5, p6) do { \
133 if (KTR_COMPILE & (m)) \
134 ktr_tracepoint((m), __FILE__, __LINE__, format, \
135 (u_long)(p1), (u_long)(p2), (u_long)(p3), \
136 (u_long)(p4), (u_long)(p5), (u_long)(p6)); \
137 } while(0)
138 #define CTR0(m, format) CTR6(m, format, 0, 0, 0, 0, 0, 0)
139 #define CTR1(m, format, p1) CTR6(m, format, p1, 0, 0, 0, 0, 0)
140 #define CTR2(m, format, p1, p2) CTR6(m, format, p1, p2, 0, 0, 0, 0)
141 #define CTR3(m, format, p1, p2, p3) CTR6(m, format, p1, p2, p3, 0, 0, 0)
142 #define CTR4(m, format, p1, p2, p3, p4) CTR6(m, format, p1, p2, p3, p4, 0, 0)
143 #define CTR5(m, format, p1, p2, p3, p4, p5) CTR6(m, format, p1, p2, p3, p4, p5, 0)
144 #else /* KTR */
145 #undef KTR_COMPILE
146 #define KTR_COMPILE 0
147 #define CTR0(m, d)
148 #define CTR1(m, d, p1)
149 #define CTR2(m, d, p1, p2)
150 #define CTR3(m, d, p1, p2, p3)
151 #define CTR4(m, d, p1, p2, p3, p4)
152 #define CTR5(m, d, p1, p2, p3, p4, p5)
153 #define CTR6(m, d, p1, p2, p3, p4, p5, p6)
154 #endif /* KTR */
155
156 #define TR0(d) CTR0(KTR_GEN, d)
157 #define TR1(d, p1) CTR1(KTR_GEN, d, p1)
158 #define TR2(d, p1, p2) CTR2(KTR_GEN, d, p1, p2)
159 #define TR3(d, p1, p2, p3) CTR3(KTR_GEN, d, p1, p2, p3)
160 #define TR4(d, p1, p2, p3, p4) CTR4(KTR_GEN, d, p1, p2, p3, p4)
161 #define TR5(d, p1, p2, p3, p4, p5) CTR5(KTR_GEN, d, p1, p2, p3, p4, p5)
162 #define TR6(d, p1, p2, p3, p4, p5, p6) CTR6(KTR_GEN, d, p1, p2, p3, p4, p5, p6)
163
164 /*
165 * Trace initialization events, similar to CTR with KTR_INIT, but
166 * completely ifdef'ed out if KTR_INIT isn't in KTR_COMPILE (to
167 * save string space, the compiler doesn't optimize out strings
168 * for the conditional ones above).
169 */
170 #if (KTR_COMPILE & KTR_INIT) != 0
171 #define ITR0(d) CTR0(KTR_INIT, d)
172 #define ITR1(d, p1) CTR1(KTR_INIT, d, p1)
173 #define ITR2(d, p1, p2) CTR2(KTR_INIT, d, p1, p2)
174 #define ITR3(d, p1, p2, p3) CTR3(KTR_INIT, d, p1, p2, p3)
175 #define ITR4(d, p1, p2, p3, p4) CTR4(KTR_INIT, d, p1, p2, p3, p4)
176 #define ITR5(d, p1, p2, p3, p4, p5) CTR5(KTR_INIT, d, p1, p2, p3, p4, p5)
177 #define ITR6(d, p1, p2, p3, p4, p5, p6) CTR6(KTR_INIT, d, p1, p2, p3, p4, p5, p6)
178 #else
179 #define ITR0(d)
180 #define ITR1(d, p1)
181 #define ITR2(d, p1, p2)
182 #define ITR3(d, p1, p2, p3)
183 #define ITR4(d, p1, p2, p3, p4)
184 #define ITR5(d, p1, p2, p3, p4, p5)
185 #define ITR6(d, p1, p2, p3, p4, p5, p6)
186 #endif
187
188 #endif /* !_SYS_KTR_H_ */
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