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      1 /*	$NetBSD: coda_opstats.h,v 1.7 2021/07/24 22:30:59 andvar Exp $	*/
      2 
      3 /*
      4  *
      5  *             Coda: an Experimental Distributed File System
      6  *                              Release 3.1
      7  *
      8  *           Copyright (c) 1987-1998 Carnegie Mellon University
      9  *                          All Rights Reserved
     10  *
     11  * Permission  to  use, copy, modify and distribute this software and its
     12  * documentation is hereby granted,  provided  that  both  the  copyright
     13  * notice  and  this  permission  notice  appear  in  all  copies  of the
     14  * software, derivative works or  modified  versions,  and  any  portions
     15  * thereof, and that both notices appear in supporting documentation, and
     16  * that credit is given to Carnegie Mellon University  in  all  documents
     17  * and publicity pertaining to direct or indirect use of this code or its
     18  * derivatives.
     19  *
     20  * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS  KNOWN  TO  HAVE  BUGS,
     21  * SOME  OF  WHICH MAY HAVE SERIOUS CONSEQUENCES.  CARNEGIE MELLON ALLOWS
     22  * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.   CARNEGIE  MELLON
     23  * DISCLAIMS  ANY  LIABILITY  OF  ANY  KIND  FOR  ANY  DAMAGES WHATSOEVER
     24  * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE  OR  OF
     25  * ANY DERIVATIVE WORK.
     26  *
     27  * Carnegie  Mellon  encourages  users  of  this  software  to return any
     28  * improvements or extensions that  they  make,  and  to  grant  Carnegie
     29  * Mellon the rights to redistribute these changes without encumbrance.
     30  *
     31  * 	@(#) coda/coda_opstats.h,v 1.1.1.1 1998/08/29 21:26:46 rvb Exp $
     32  */
     33 
     34 /*
     35  * operation stats: what the minicache can intercept that
     36  * *isn't* seen by venus.  These stats are kept to augment
     37  * the stats maintained by the Volume-Session mechanism.
     38  */
     39 
     40 /* vfsops:
     41  *          mount: not currently bounced to Venus
     42  *          umount: nope
     43  *          root: only first call, rest is cached.
     44  *          statfs: none (bogus)
     45  *          sync: none (bogus)
     46  *          vget: all
     47  */
     48 
     49 #define CODA_MOUNT_STATS  0
     50 #define CODA_UMOUNT_STATS 1
     51 #define CODA_ROOT_STATS   2
     52 #define CODA_STATFS_STATS 3
     53 #define CODA_SYNC_STATS   4
     54 #define CODA_VGET_STATS   5
     55 #define CODA_VFSOPS_SIZE  6
     56 
     57 /* vnodeops:
     58  *            open: all to venus
     59  *            close: all to venus
     60  *            rdrw: bogus.  Maybe redirected to UFS.
     61  *                          May call open/close for internal opens/closes
     62  *                          (Does exec not call open?)
     63  *            ioctl: causes a lookupname
     64  *                   passes through
     65  *            select: can't get there from here.
     66  *            getattr: can be satsified by cache
     67  *            setattr: all go through
     68  *            access: can be satisfied by cache
     69  *            readlink: can be satisfied by cache
     70  *            fsync: passes through
     71  *            inactive: passes through
     72  *            lookup: can be satisfied by cache
     73  *            create: passes through
     74  *            remove: passes through
     75  *            link: passes through
     76  *            rename: passes through
     77  *            mkdir: passes through
     78  *            rmdir: passes through
     79  *            symlink: passes through
     80  *            readdir: may be redirected to UFS
     81  *                     may cause an "internal" open/close
     82  */
     83 
     84 #define CODA_OPEN_STATS     0
     85 #define CODA_CLOSE_STATS    1
     86 #define CODA_RDWR_STATS     2
     87 #define CODA_IOCTL_STATS    3
     88 #define CODA_SELECT_STATS   4
     89 #define CODA_GETATTR_STATS  5
     90 #define CODA_SETATTR_STATS  6
     91 #define CODA_ACCESS_STATS   7
     92 #define CODA_READLINK_STATS 8
     93 #define CODA_FSYNC_STATS    9
     94 #define CODA_INACTIVE_STATS 10
     95 #define CODA_LOOKUP_STATS   11
     96 #define CODA_CREATE_STATS   12
     97 #define CODA_REMOVE_STATS   13
     98 #define CODA_LINK_STATS     14
     99 #define CODA_RENAME_STATS   15
    100 #define CODA_MKDIR_STATS    16
    101 #define CODA_RMDIR_STATS    17
    102 #define CODA_SYMLINK_STATS  18
    103 #define CODA_READDIR_STATS  19
    104 #define CODA_VNODEOPS_SIZE  20
    105 
    106 /*
    107  * I propose the following structures:
    108  */
    109 
    110 struct coda_op_stats {
    111     int opcode;       /* vfs opcode */
    112     long entries;     /* number of times call attempted */
    113     long sat_intrn;   /* number of times call satisfied by cache */
    114     long unsat_intrn; /* number of times call failed in cache, but
    115                          was not bounced to venus proper. */
    116     long gen_intrn;   /* number of times call generated internally */
    117                       /* (do we need that?) */
    118 };
    119 
    120 /*
    121  * With each call to the minicache, we'll bump the counters whenever
    122  * a call is satisfied internally (through the cache or through a
    123  * redirect), and whenever an operation is caused internally.
    124  * Then, we can add the total operations caught by the minicache
    125  * to the world-wide totals, and leave a caveat for the specific
    126  * graphs later.
    127  */
    128