1 /* trace.h 4.7 81/04/18 */ 2 3 /* 4 * File system buffer tracing points; all trace <dev, 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 15 /* 16 * Memory allocator trace points; all trace the amount of memory involved 17 */ 18 #define TR_MALL 10 /* memory allocated */ 19 20 /* 21 * Paging trace points: all are <vaddr, pid> 22 */ 23 #define TR_INTRANS 20 /* page intransit block */ 24 #define TR_EINTRANS 21 /* page intransit wait done */ 25 #define TR_FRECLAIM 22 /* reclaim from free list */ 26 #define TR_RECLAIM 23 /* reclaim from loop */ 27 #define TR_XSFREC 24 /* reclaim from free list instead of drum */ 28 #define TR_XIFREC 25 /* reclaim from free list instead of fsys */ 29 #define TR_WAITMEM 26 /* wait for memory in pagein */ 30 #define TR_EWAITMEM 27 /* end memory wait in pagein */ 31 #define TR_ZFOD 28 /* zfod page fault */ 32 #define TR_EXFOD 29 /* exec fod page fault */ 33 #define TR_VRFOD 30 /* vread fod page fault */ 34 #define TR_CACHEFOD 31 /* fod in file system cache */ 35 #define TR_SWAPIN 32 /* drum page fault */ 36 #define TR_PGINDONE 33 /* page in done */ 37 38 /* 39 * System call trace points. 40 */ 41 #define TR_VADVISE 40 /* vadvise occurred with <arg, pid> */ 42 43 /* 44 * Miscellaneous 45 */ 46 #define TR_STAMP 50 /* user said vtrace(VTR_STAMP, value); */ 47 48 /* 49 * This defines the size of the trace flags array. 50 */ 51 #define TR_NFLAGS 100 /* generous */ 52 53 #define TRCSIZ 4096 54 55 /* 56 * Specifications of the vtrace() system call, which takes one argument. 57 */ 58 #define VTRACE 64+51 59 60 #define VTR_DISABLE 0 /* set a trace flag to 0 */ 61 #define VTR_ENABLE 1 /* set a trace flag to 1 */ 62 #define VTR_VALUE 2 /* return value of a trace flag */ 63 #define VTR_UALARM 3 /* set alarm to go off (sig 16) */ 64 /* in specified number of hz */ 65 #define VTR_STAMP 4 /* user specified stamp */ 66 #ifdef KERNEL 67 #ifdef TRACE 68 char traceflags[TR_NFLAGS]; 69 struct proc *traceproc; 70 int tracebuf[TRCSIZ]; 71 unsigned tracex; 72 int tracewhich; 73 #define trace(a,b,c) if (traceflags[a]) trace1(a,b,c) 74 #endif 75 #endif 76