1/* $NetBSD: trace.h,v 1.12 2017/12/19 18:47:58 kamil Exp $ */ 2 3/*- 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)trace.h 8.1 (Berkeley) 6/2/93 32 */ 33 34#ifndef _SYS_TRACE_H_ 35#define _SYS_TRACE_H_ 36 37/* 38 * File system buffer tracing points; all trace <pack(dev, size), bn> 39 */ 40#define TR_BREADHIT 0 /* buffer read found in cache */ 41#define TR_BREADMISS 1 /* buffer read not in cache */ 42#define TR_BWRITE 2 /* buffer written */ 43#define TR_BREADHITRA 3 /* buffer read-ahead found in cache */ 44#define TR_BREADMISSRA 4 /* buffer read-ahead not in cache */ 45#define TR_XFODMISS 5 /* exe fod read */ 46#define TR_XFODHIT 6 /* exe fod read */ 47#define TR_BRELSE 7 /* brelse */ 48#define TR_BREALLOC 8 /* expand/contract a buffer */ 49 50/* 51 * Memory allocator trace points; all trace the amount of memory involved 52 */ 53#define TR_MALL 10 /* memory allocated */ 54 55/* 56 * Paging trace points: all are <vaddr, pid> 57 */ 58#define TR_INTRANS 20 /* page intransit block */ 59#define TR_EINTRANS 21 /* page intransit wait done */ 60#define TR_FRECLAIM 22 /* reclaim from free list */ 61#define TR_RECLAIM 23 /* reclaim from loop */ 62#define TR_XSFREC 24 /* reclaim from free list instead of drum */ 63#define TR_XIFREC 25 /* reclaim from free list instead of fsys */ 64#define TR_WAITMEM 26 /* wait for memory in pagein */ 65#define TR_EWAITMEM 27 /* end memory wait in pagein */ 66#define TR_ZFOD 28 /* zfod page fault */ 67#define TR_EXFOD 29 /* exec fod page fault */ 68#define TR_VRFOD 30 /* vread fod page fault */ 69#define TR_CACHEFOD 31 /* fod in file system cache */ 70#define TR_SWAPIN 32 /* drum page fault */ 71#define TR_PGINDONE 33 /* page in done */ 72#define TR_SWAPIO 34 /* swap i/o request arrives */ 73 74/* 75 * Miscellaneous 76 */ 77#define TR_STAMP 45 /* user said vtrace(VTR_STAMP, value); */ 78 79/* 80 * This defines the size of the trace flags array. 81 */ 82#define TR_NFLAGS 100 /* generous */ 83 84#define TRCSIZ 4096 85 86/* 87 * Specifications of the vtrace() system call, which takes one argument. 88 */ 89#define VTRACE 64+51 90 91#define VTR_DISABLE 0 /* set a trace flag to 0 */ 92#define VTR_ENABLE 1 /* set a trace flag to 1 */ 93#define VTR_VALUE 2 /* return value of a trace flag */ 94#define VTR_UALARM 3 /* set alarm to go off (sig 16) */ 95 /* in specified number of hz */ 96#define VTR_STAMP 4 /* user specified stamp */ 97 98#ifdef _KERNEL 99#ifdef TRACE 100struct proc *traceproc; 101int tracewhich, tracebuf[TRCSIZ]; 102u_int tracex; 103char traceflags[TR_NFLAGS]; 104#define pack(v,b) (((v)->v_mount->mnt_stat.f_fsidx.__fsid_val[0])<<16)|(b) 105#define trace(a,b,c) { \ 106 if (traceflags[a]) \ 107 trace1(a,b,c); \ 108} 109#else 110#define trace(a,b,c) 111#endif /* TRACE */ 112#endif /* _KERNEL */ 113 114#endif /* !_SYS_TRACE_H_ */ 115