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- /*
- * $Header: /ax/networking:include/sys/trace.h:networking 1.1 $
- * $Source: /ax/networking:include/sys/trace.h: $
- *
- * Copyright (c) 1988 Acorn Computers Ltd., Cambridge, England
- *
- * $Log: trace.h,v $
- * Revision 1.1 95/01/11 10:20:02 kwelton
- * Initial revision
- *
- * Revision 1.3 88/06/17 20:22:01 beta
- * Acorn Unix initial beta version
- *
- */
- /* @(#)trace.h 1.2 87/05/15 3.2/4.3NFSSRC */
- /*
- * Copyright (c) 1982, 1986 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- *
- * @(#)trace.h 7.1 (Berkeley) 6/4/86
- */
-
- /*
- * File system buffer tracing points; all trace <pack(dev, size), bn>
- */
- #define TR_BREADHIT 0 /* buffer read found in cache */
- #define TR_BREADMISS 1 /* buffer read not in cache */
- #define TR_BWRITE 2 /* buffer written */
- #define TR_BREADHITRA 3 /* buffer read-ahead found in cache */
- #define TR_BREADMISSRA 4 /* buffer read-ahead not in cache */
- #define TR_XFODMISS 5 /* exe fod read */
- #define TR_XFODHIT 6 /* exe fod read */
- #define TR_BRELSE 7 /* brelse */
- #define TR_BREALLOC 8 /* expand/contract a buffer */
-
- /*
- * Memory allocator trace points; all trace the amount of memory involved
- */
- #define TR_MALL 10 /* memory allocated */
-
- /*
- * Paging trace points: all are <vaddr, pid>
- */
- #define TR_INTRANS 20 /* page intransit block */
- #define TR_EINTRANS 21 /* page intransit wait done */
- #define TR_FRECLAIM 22 /* reclaim from free list */
- #define TR_RECLAIM 23 /* reclaim from loop */
- #define TR_XSFREC 24 /* reclaim from free list instead of drum */
- #define TR_XIFREC 25 /* reclaim from free list instead of fsys */
- #define TR_WAITMEM 26 /* wait for memory in pagein */
- #define TR_EWAITMEM 27 /* end memory wait in pagein */
- #define TR_ZFOD 28 /* zfod page fault */
- #define TR_EXFOD 29 /* exec fod page fault */
- #define TR_VRFOD 30 /* vread fod page fault */
- #define TR_CACHEFOD 31 /* fod in file system cache */
- #define TR_SWAPIN 32 /* drum page fault */
- #define TR_PGINDONE 33 /* page in done */
- #define TR_SWAPIO 34 /* swap i/o request arrives */
-
- /*
- * System call trace points.
- */
- #define TR_VADVISE 40 /* vadvise occurred with <arg, pid> */
-
- /*
- * Miscellaneous
- */
- #define TR_STAMP 45 /* user said vtrace(VTR_STAMP, value); */
-
- /*
- * This defines the size of the trace flags array.
- */
- #define TR_NFLAGS 100 /* generous */
-
- #define TRCSIZ 4096
-
- /*
- * Specifications of the vtrace() system call, which takes one argument.
- */
- #define VTRACE 64+51
-
- #define VTR_DISABLE 0 /* set a trace flag to 0 */
- #define VTR_ENABLE 1 /* set a trace flag to 1 */
- #define VTR_VALUE 2 /* return value of a trace flag */
- #define VTR_UALARM 3 /* set alarm to go off (sig 16) */
- /* in specified number of hz */
- #define VTR_STAMP 4 /* user specified stamp */
- #ifdef KERNEL
- #ifdef TRACE
- char traceflags[TR_NFLAGS];
- struct proc *traceproc;
- int tracebuf[TRCSIZ];
- unsigned tracex;
- int tracewhich;
- #define pack(a,b) ((a)<<16)|(b)
- #define trace(a,b,c) if (traceflags[a]) trace1(a,b,c)
- #else
- #define trace(a,b,b) ;
- #endif
- #endif
-
- /* EOF trace.h */
-