LCOM1920-T02G10

/*        $NetBSD: trace.h,v 1.11 2005/12/11 12:25:21 christos Exp $        */

/*-

 * Copyright (c) 1982, 1986, 1993

 *        The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *        @(#)trace.h        8.1 (Berkeley) 6/2/93

 */

#ifndef _SYS_TRACE_H_

#define _SYS_TRACE_H_

/*

 * 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

struct        proc *traceproc;

int        tracewhich, tracebuf[TRCSIZ];

u_int        tracex;

char        traceflags[TR_NFLAGS];

#define        pack(v,b)        (((v)->v_mount->mnt_stat.f_fsidx.__fsid_val[0])<<16)|(b)

#define        trace(a,b,c) {                                                        \

        if (traceflags[a])                                                \

                trace1(a,b,c);                                                \

}

#else

#define        trace(a,b,c)

#endif /* TRACE */

#endif /* _KERNEL */

#endif /* !_SYS_TRACE_H_ */