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1.1 root 1: /*-
2: * Copyright (c) 1982, 1986 The Regents of the University of California.
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: * 3. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by the University of
16: * California, Berkeley and its contributors.
17: * 4. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
33: * @(#)trace.h 7.6 (Berkeley) 5/5/91
34: */
35:
36: /*
37: * File system buffer tracing points; all trace <pack(dev, size), bn>
38: */
39: #define TR_BREADHIT 0 /* buffer read found in cache */
40: #define TR_BREADMISS 1 /* buffer read not in cache */
41: #define TR_BWRITE 2 /* buffer written */
42: #define TR_BREADHITRA 3 /* buffer read-ahead found in cache */
43: #define TR_BREADMISSRA 4 /* buffer read-ahead not in cache */
44: #define TR_XFODMISS 5 /* exe fod read */
45: #define TR_XFODHIT 6 /* exe fod read */
46: #define TR_BRELSE 7 /* brelse */
47: #define TR_BREALLOC 8 /* expand/contract a buffer */
48:
49: /*
50: * Memory allocator trace points; all trace the amount of memory involved
51: */
52: #define TR_MALL 10 /* memory allocated */
53:
54: /*
55: * Paging trace points: all are <vaddr, pid>
56: */
57: #define TR_INTRANS 20 /* page intransit block */
58: #define TR_EINTRANS 21 /* page intransit wait done */
59: #define TR_FRECLAIM 22 /* reclaim from free list */
60: #define TR_RECLAIM 23 /* reclaim from loop */
61: #define TR_XSFREC 24 /* reclaim from free list instead of drum */
62: #define TR_XIFREC 25 /* reclaim from free list instead of fsys */
63: #define TR_WAITMEM 26 /* wait for memory in pagein */
64: #define TR_EWAITMEM 27 /* end memory wait in pagein */
65: #define TR_ZFOD 28 /* zfod page fault */
66: #define TR_EXFOD 29 /* exec fod page fault */
67: #define TR_VRFOD 30 /* vread fod page fault */
68: #define TR_CACHEFOD 31 /* fod in file system cache */
69: #define TR_SWAPIN 32 /* drum page fault */
70: #define TR_PGINDONE 33 /* page in done */
71: #define TR_SWAPIO 34 /* swap i/o request arrives */
72:
73: /*
74: * System call trace points.
75: */
76: #define TR_VADVISE 40 /* vadvise occurred with <arg, pid> */
77:
78: /*
79: * Miscellaneous
80: */
81: #define TR_STAMP 45 /* user said vtrace(VTR_STAMP, value); */
82:
83: /*
84: * This defines the size of the trace flags array.
85: */
86: #define TR_NFLAGS 100 /* generous */
87:
88: #define TRCSIZ 4096
89:
90: /*
91: * Specifications of the vtrace() system call, which takes one argument.
92: */
93: #define VTRACE 64+51
94:
95: #define VTR_DISABLE 0 /* set a trace flag to 0 */
96: #define VTR_ENABLE 1 /* set a trace flag to 1 */
97: #define VTR_VALUE 2 /* return value of a trace flag */
98: #define VTR_UALARM 3 /* set alarm to go off (sig 16) */
99: /* in specified number of hz */
100: #define VTR_STAMP 4 /* user specified stamp */
101:
102: #ifdef KERNEL
103: #ifdef TRACE
104: char traceflags[TR_NFLAGS];
105: struct proc *traceproc;
106: int tracebuf[TRCSIZ];
107: unsigned tracex;
108: int tracewhich;
109: #define pack(v,b) (((v)->v_mount->mnt_stat.f_fsid.val[0])<<16)|(b)
110: #define trace(a,b,c) if (traceflags[a]) trace1(a,b,c)
111: #else
112: #define trace(a,b,c) ;
113: #endif
114: #endif
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