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Annotation of 42BSD/sys/h/trace.h, revision 1.1.1.1

1.1       root        1: /*     trace.h 6.1     83/07/29        */
                      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: #define        TR_SWAPIO       34      /* swap i/o request arrives */
                     38: 
                     39: /*
                     40:  * System call trace points.
                     41:  */
                     42: #define        TR_VADVISE      40      /* vadvise occurred with <arg, pid> */
                     43: 
                     44: /*
                     45:  * Miscellaneous
                     46:  */
                     47: #define        TR_STAMP        50      /* user said vtrace(VTR_STAMP, value); */
                     48: 
                     49: /*
                     50:  * This defines the size of the trace flags array.
                     51:  */
                     52: #define        TR_NFLAGS       100     /* generous */
                     53: 
                     54: #define        TRCSIZ          4096
                     55: 
                     56: /*
                     57:  * Specifications of the vtrace() system call, which takes one argument.
                     58:  */
                     59: #define        VTRACE          64+51
                     60: 
                     61: #define        VTR_DISABLE     0               /* set a trace flag to 0 */
                     62: #define        VTR_ENABLE      1               /* set a trace flag to 1 */
                     63: #define        VTR_VALUE       2               /* return value of a trace flag */
                     64: #define        VTR_UALARM      3               /* set alarm to go off (sig 16) */
                     65:                                        /* in specified number of hz */
                     66: #define        VTR_STAMP       4               /* user specified stamp */
                     67: #ifdef KERNEL
                     68: #ifdef TRACE
                     69: char   traceflags[TR_NFLAGS];
                     70: struct proc *traceproc;
                     71: int    tracebuf[TRCSIZ];
                     72: unsigned tracex;
                     73: int    tracewhich;
                     74: #define        trace(a,b,c)    if (traceflags[a]) trace1(a,b,c)
                     75: #else
                     76: #define        trace(a,b,b)    ;
                     77: #endif
                     78: #endif

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