sys/sys/nchstats.h

   1 /*
   2  * Copyright (c) 2003, 2004 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Hiten Pandya <hmp@backplane.com>.
   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  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sys/sys/nchstats.h,v 1.3 2004/07/16 05:04:36 hmp Exp $
  35  */
  36 #ifndef _SYS_NCHSTATS_H_
  37 #define _SYS_NCHSTATS_H_
  38
  39 /*
  40  * Statistics on the usefulness of namei caches.
  41  * (per-cpu)
  42  */
  43 struct  nchstats {
  44         unsigned long   ncs_goodhits;   /* hits that we can really use */
  45         unsigned long   ncs_neghits;    /* negative hits that we can use */
  46         unsigned long   ncs_badhits;    /* hits we must drop */
  47         unsigned long   ncs_falsehits;  /* hits with id mismatch */
  48         unsigned long   ncs_miss;       /* misses */
  49         unsigned long   ncs_long;       /* long names that ignore cache */
  50         unsigned long   ncs_pass2;      /* names found with passes == 2 */
  51         unsigned long   ncs_2passes;    /* number of times we attempt it */
  52 };
  53
  54 #endif /* _SYS_NCHSTATS_H_ */