1 /* 2 * Copyright (c) 1982, 1986 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 * 6 * @(#)trace.h 7.1 (Berkeley) 06/04/86 7 */ 8 9 /* 10 * File system buffer tracing points; all trace <pack(dev, size), bn> 11 */ 12 #define TR_BREADHIT 0 /* buffer read found in cache */ 13 #define TR_BREADMISS 1 /* buffer read not in cache */ 14 #define TR_BWRITE 2 /* buffer written */ 15 #define TR_BREADHITRA 3 /* buffer read-ahead found in cache */ 16 #define TR_BREADMISSRA 4 /* buffer read-ahead not in cache */ 17 #define TR_XFODMISS 5 /* exe fod read */ 18 #define TR_XFODHIT 6 /* exe fod read */ 19 #define TR_BRELSE 7 /* brelse */ 20 #define TR_BREALLOC 8 /* expand/contract a buffer */ 21 22 /* 23 * Memory allocator trace points; all trace the amount of memory involved 24 */ 25 #define TR_MALL 10 /* memory allocated */ 26 27 /* 28 * Paging trace points: all are <vaddr, pid> 29 */ 30 #define TR_INTRANS 20 /* page intransit block */ 31 #define TR_EINTRANS 21 /* page intransit wait done */ 32 #define TR_FRECLAIM 22 /* reclaim from free list */ 33 #define TR_RECLAIM 23 /* reclaim from loop */ 34 #define TR_XSFREC 24 /* reclaim from free list instead of drum */ 35 #define TR_XIFREC 25 /* reclaim from free list instead of fsys */ 36 #define TR_WAITMEM 26 /* wait for memory in pagein */ 37 #define TR_EWAITMEM 27 /* end memory wait in pagein */ 38 #define TR_ZFOD 28 /* zfod page fault */ 39 #define TR_EXFOD 29 /* exec fod page fault */ 40 #define TR_VRFOD 30 /* vread fod page fault */ 41 #define TR_CACHEFOD 31 /* fod in file system cache */ 42 #define TR_SWAPIN 32 /* drum page fault */ 43 #define TR_PGINDONE 33 /* page in done */ 44 #define TR_SWAPIO 34 /* swap i/o request arrives */ 45 46 /* 47 * System call trace points. 48 */ 49 #define TR_VADVISE 40 /* vadvise occurred with <arg, pid> */ 50 51 /* 52 * Miscellaneous 53 */ 54 #define TR_STAMP 45 /* user said vtrace(VTR_STAMP, value); */ 55 56 /* 57 * This defines the size of the trace flags array. 58 */ 59 #define TR_NFLAGS 100 /* generous */ 60 61 #define TRCSIZ 4096 62 63 /* 64 * Specifications of the vtrace() system call, which takes one argument. 65 */ 66 #define VTRACE 64+51 67 68 #define VTR_DISABLE 0 /* set a trace flag to 0 */ 69 #define VTR_ENABLE 1 /* set a trace flag to 1 */ 70 #define VTR_VALUE 2 /* return value of a trace flag */ 71 #define VTR_UALARM 3 /* set alarm to go off (sig 16) */ 72 /* in specified number of hz */ 73 #define VTR_STAMP 4 /* user specified stamp */ 74 #ifdef KERNEL 75 #ifdef TRACE 76 char traceflags[TR_NFLAGS]; 77 struct proc *traceproc; 78 int tracebuf[TRCSIZ]; 79 unsigned tracex; 80 int tracewhich; 81 #define pack(a,b) ((a)<<16)|(b) 82 #define trace(a,b,c) if (traceflags[a]) trace1(a,b,c) 83 #else 84 #define trace(a,b,b) ; 85 #endif 86 #endif 87