1 /*- 2 * Copyright (c) 1982, 1986 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)trace.h 7.7 (Berkeley) 10/22/92 8 */ 9 10 /* 11 * File system buffer tracing points; all trace <pack(dev, size), bn> 12 */ 13 #define TR_BREADHIT 0 /* buffer read found in cache */ 14 #define TR_BREADMISS 1 /* buffer read not in cache */ 15 #define TR_BWRITE 2 /* buffer written */ 16 #define TR_BREADHITRA 3 /* buffer read-ahead found in cache */ 17 #define TR_BREADMISSRA 4 /* buffer read-ahead not in cache */ 18 #define TR_XFODMISS 5 /* exe fod read */ 19 #define TR_XFODHIT 6 /* exe fod read */ 20 #define TR_BRELSE 7 /* brelse */ 21 #define TR_BREALLOC 8 /* expand/contract a buffer */ 22 23 /* 24 * Memory allocator trace points; all trace the amount of memory involved 25 */ 26 #define TR_MALL 10 /* memory allocated */ 27 28 /* 29 * Paging trace points: all are <vaddr, pid> 30 */ 31 #define TR_INTRANS 20 /* page intransit block */ 32 #define TR_EINTRANS 21 /* page intransit wait done */ 33 #define TR_FRECLAIM 22 /* reclaim from free list */ 34 #define TR_RECLAIM 23 /* reclaim from loop */ 35 #define TR_XSFREC 24 /* reclaim from free list instead of drum */ 36 #define TR_XIFREC 25 /* reclaim from free list instead of fsys */ 37 #define TR_WAITMEM 26 /* wait for memory in pagein */ 38 #define TR_EWAITMEM 27 /* end memory wait in pagein */ 39 #define TR_ZFOD 28 /* zfod page fault */ 40 #define TR_EXFOD 29 /* exec fod page fault */ 41 #define TR_VRFOD 30 /* vread fod page fault */ 42 #define TR_CACHEFOD 31 /* fod in file system cache */ 43 #define TR_SWAPIN 32 /* drum page fault */ 44 #define TR_PGINDONE 33 /* page in done */ 45 #define TR_SWAPIO 34 /* swap i/o request arrives */ 46 47 /* 48 * System call trace points. 49 */ 50 #define TR_VADVISE 40 /* vadvise occurred with <arg, pid> */ 51 52 /* 53 * Miscellaneous 54 */ 55 #define TR_STAMP 45 /* user said vtrace(VTR_STAMP, value); */ 56 57 /* 58 * This defines the size of the trace flags array. 59 */ 60 #define TR_NFLAGS 100 /* generous */ 61 62 #define TRCSIZ 4096 63 64 /* 65 * Specifications of the vtrace() system call, which takes one argument. 66 */ 67 #define VTRACE 64+51 68 69 #define VTR_DISABLE 0 /* set a trace flag to 0 */ 70 #define VTR_ENABLE 1 /* set a trace flag to 1 */ 71 #define VTR_VALUE 2 /* return value of a trace flag */ 72 #define VTR_UALARM 3 /* set alarm to go off (sig 16) */ 73 /* in specified number of hz */ 74 #define VTR_STAMP 4 /* user specified stamp */ 75 76 #ifdef KERNEL 77 #ifdef TRACE 78 struct proc *traceproc; 79 int tracewhich, tracebuf[TRCSIZ]; 80 u_int tracex; 81 char traceflags[TR_NFLAGS]; 82 #define pack(v,b) (((v)->v_mount->mnt_stat.f_fsid.val[0])<<16)|(b) 83 #define trace(a,b,c) { \ 84 if (traceflags[a]) \ 85 trace1(a,b,c); \ 86 } 87 #else 88 #define trace(a,b,c) 89 #endif 90 #endif 91