1 | /* $NetBSD: trace.h,v 1.11 2005/12/11 12:25:21 christos Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1982, 1986, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. Neither the name of the University nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | * |
31 | * @(#)trace.h 8.1 (Berkeley) 6/2/93 |
32 | */ |
33 | |
34 | #ifndef _SYS_TRACE_H_ |
35 | #define _SYS_TRACE_H_ |
36 | |
37 | /* |
38 | * File system buffer tracing points; all trace <pack(dev, size), bn> |
39 | */ |
40 | #define TR_BREADHIT 0 /* buffer read found in cache */ |
41 | #define TR_BREADMISS 1 /* buffer read not in cache */ |
42 | #define TR_BWRITE 2 /* buffer written */ |
43 | #define TR_BREADHITRA 3 /* buffer read-ahead found in cache */ |
44 | #define TR_BREADMISSRA 4 /* buffer read-ahead not in cache */ |
45 | #define TR_XFODMISS 5 /* exe fod read */ |
46 | #define TR_XFODHIT 6 /* exe fod read */ |
47 | #define TR_BRELSE 7 /* brelse */ |
48 | #define TR_BREALLOC 8 /* expand/contract a buffer */ |
49 | |
50 | /* |
51 | * Memory allocator trace points; all trace the amount of memory involved |
52 | */ |
53 | #define TR_MALL 10 /* memory allocated */ |
54 | |
55 | /* |
56 | * Paging trace points: all are <vaddr, pid> |
57 | */ |
58 | #define TR_INTRANS 20 /* page intransit block */ |
59 | #define TR_EINTRANS 21 /* page intransit wait done */ |
60 | #define TR_FRECLAIM 22 /* reclaim from free list */ |
61 | #define TR_RECLAIM 23 /* reclaim from loop */ |
62 | #define TR_XSFREC 24 /* reclaim from free list instead of drum */ |
63 | #define TR_XIFREC 25 /* reclaim from free list instead of fsys */ |
64 | #define TR_WAITMEM 26 /* wait for memory in pagein */ |
65 | #define TR_EWAITMEM 27 /* end memory wait in pagein */ |
66 | #define TR_ZFOD 28 /* zfod page fault */ |
67 | #define TR_EXFOD 29 /* exec fod page fault */ |
68 | #define TR_VRFOD 30 /* vread fod page fault */ |
69 | #define TR_CACHEFOD 31 /* fod in file system cache */ |
70 | #define TR_SWAPIN 32 /* drum page fault */ |
71 | #define TR_PGINDONE 33 /* page in done */ |
72 | #define TR_SWAPIO 34 /* swap i/o request arrives */ |
73 | |
74 | /* |
75 | * System call trace points. |
76 | */ |
77 | #define TR_VADVISE 40 /* vadvise occurred with <arg, pid> */ |
78 | |
79 | /* |
80 | * Miscellaneous |
81 | */ |
82 | #define TR_STAMP 45 /* user said vtrace(VTR_STAMP, value); */ |
83 | |
84 | /* |
85 | * This defines the size of the trace flags array. |
86 | */ |
87 | #define TR_NFLAGS 100 /* generous */ |
88 | |
89 | #define TRCSIZ 4096 |
90 | |
91 | /* |
92 | * Specifications of the vtrace() system call, which takes one argument. |
93 | */ |
94 | #define VTRACE 64+51 |
95 | |
96 | #define VTR_DISABLE 0 /* set a trace flag to 0 */ |
97 | #define VTR_ENABLE 1 /* set a trace flag to 1 */ |
98 | #define VTR_VALUE 2 /* return value of a trace flag */ |
99 | #define VTR_UALARM 3 /* set alarm to go off (sig 16) */ |
100 | /* in specified number of hz */ |
101 | #define VTR_STAMP 4 /* user specified stamp */ |
102 | |
103 | #ifdef _KERNEL |
104 | #ifdef TRACE |
105 | struct proc *traceproc; |
106 | int tracewhich, tracebuf[TRCSIZ]; |
107 | u_int tracex; |
108 | char traceflags[TR_NFLAGS]; |
109 | #define pack(v,b) (((v)->v_mount->mnt_stat.f_fsidx.__fsid_val[0])<<16)|(b) |
110 | #define trace(a,b,c) { \ |
111 | if (traceflags[a]) \ |
112 | trace1(a,b,c); \ |
113 | } |
114 | #else |
115 | #define trace(a,b,c) |
116 | #endif /* TRACE */ |
117 | #endif /* _KERNEL */ |
118 | |
119 | #endif /* !_SYS_TRACE_H_ */ |
120 | |