1 /* trace.h 6.2 84/01/03 */ 2 3 /* 4 * File system buffer tracing points; all trace <pack(dev, size), bn> 5 */ 6 #define TR_BREADHIT 0 /* buffer read found in cache */ 7 #define TR_BREADMISS 1 /* buffer read not in cache */ 8 #define TR_BWRITE 2 /* buffer written */ 9 #define TR_BREADHITRA 3 /* buffer read-ahead found in cache */ 10 #define TR_BREADMISSRA 4 /* buffer read-ahead not in cache */ 11 #define TR_XFODMISS 5 /* exe fod read */ 12 #define TR_XFODHIT 6 /* exe fod read */ 13 #define TR_BRELSE 7 /* brelse */ 14 #define TR_BREALLOC 8 /* expand/contract a buffer */ 15 16 /* 17 * Memory allocator trace points; all trace the amount of memory involved 18 */ 19 #define TR_MALL 10 /* memory allocated */ 20 21 /* 22 * Paging trace points: all are <vaddr, pid> 23 */ 24 #define TR_INTRANS 20 /* page intransit block */ 25 #define TR_EINTRANS 21 /* page intransit wait done */ 26 #define TR_FRECLAIM 22 /* reclaim from free list */ 27 #define TR_RECLAIM 23 /* reclaim from loop */ 28 #define TR_XSFREC 24 /* reclaim from free list instead of drum */ 29 #define TR_XIFREC 25 /* reclaim from free list instead of fsys */ 30 #define TR_WAITMEM 26 /* wait for memory in pagein */ 31 #define TR_EWAITMEM 27 /* end memory wait in pagein */ 32 #define TR_ZFOD 28 /* zfod page fault */ 33 #define TR_EXFOD 29 /* exec fod page fault */ 34 #define TR_VRFOD 30 /* vread fod page fault */ 35 #define TR_CACHEFOD 31 /* fod in file system cache */ 36 #define TR_SWAPIN 32 /* drum page fault */ 37 #define TR_PGINDONE 33 /* page in done */ 38 #define TR_SWAPIO 34 /* swap i/o request arrives */ 39 40 /* 41 * System call trace points. 42 */ 43 #define TR_VADVISE 40 /* vadvise occurred with <arg, pid> */ 44 45 /* 46 * Miscellaneous 47 */ 48 #define TR_STAMP 45 /* user said vtrace(VTR_STAMP, value); */ 49 50 /* 51 * This defines the size of the trace flags array. 52 */ 53 #define TR_NFLAGS 100 /* generous */ 54 55 #define TRCSIZ 4096 56 57 /* 58 * Specifications of the vtrace() system call, which takes one argument. 59 */ 60 #define VTRACE 64+51 61 62 #define VTR_DISABLE 0 /* set a trace flag to 0 */ 63 #define VTR_ENABLE 1 /* set a trace flag to 1 */ 64 #define VTR_VALUE 2 /* return value of a trace flag */ 65 #define VTR_UALARM 3 /* set alarm to go off (sig 16) */ 66 /* in specified number of hz */ 67 #define VTR_STAMP 4 /* user specified stamp */ 68 #ifdef KERNEL 69 #ifdef TRACE 70 char traceflags[TR_NFLAGS]; 71 struct proc *traceproc; 72 int tracebuf[TRCSIZ]; 73 unsigned tracex; 74 int tracewhich; 75 #define pack(a,b) ((a)<<16)|(b) 76 #define trace(a,b,c) if (traceflags[a]) trace1(a,b,c) 77 #else 78 #define trace(a,b,b) ; 79 #endif 80 #endif 81