#ifndef _BLURB_
#define _BLURB_
/*

            Coda: an Experimental Distributed File System
                             Release 3.1

          Copyright (c) 1987-1996 Carnegie Mellon University
                         All Rights Reserved

Permission  to  use, copy, modify and distribute this software and its
documentation is hereby granted,  provided  that  both  the  copyright
notice  and  this  permission  notice  appear  in  all  copies  of the
software, derivative works or  modified  versions,  and  any  portions
thereof, and that both notices appear in supporting documentation, and
that credit is given to Carnegie Mellon University  in  all  documents
and publicity pertaining to direct or indirect use of this code or its
derivatives.

CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS  KNOWN  TO  HAVE  BUGS,
SOME  OF  WHICH MAY HAVE SERIOUS CONSEQUENCES.  CARNEGIE MELLON ALLOWS
FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.   CARNEGIE  MELLON
DISCLAIMS  ANY  LIABILITY  OF  ANY  KIND  FOR  ANY  DAMAGES WHATSOEVER
RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE  OR  OF
ANY DERIVATIVE WORK.

Carnegie  Mellon  encourages  users  of  this  software  to return any
improvements or extensions that  they  make,  and  to  grant  Carnegie
Mellon the rights to redistribute these changes without encumbrance.
*/

static char *rcsid = "$Header: /afs/cs/project/coda-src/cvs/coda/kernel-src/vfs/linux21/linux/coda_opstats.h,v 1.1 1997/12/02 05:35:02 braam Exp $";
#endif /*_BLURB_*/


/*
 * operation stats: what the minicache can intercept that
 * *isn't* seen by venus.  These stats are kept to augment
 * the stats maintained by the Volume-Session mechanism.
 */

/* vfsops:
 *          mount: not currently bounced to Venus
 *          umount: nope
 *          root: only first call, rest is cached.
 *          statfs: none (bogus)
 *          sync: none (bogus)
 *          vget: all
 */

#define CFS_MOUNT_STATS  0
#define CFS_UMOUNT_STATS 1
#define CFS_ROOT_STATS   2
#define CFS_STATFS_STATS 3
#define CFS_SYNC_STATS   4
#define CFS_VGET_STATS   5
#define CFS_VFSOPS_SIZE  6

/* vnodeops:
 *            open: all to venus
 *            close: all to venus
 *            rdrw: bogus.  Maybe redirected to UFS.
 *                          May call open/close for internal opens/closes
 *                          (Does exec not call open?)
 *            ioctl: causes a lookupname
 *                   passes through
 *            select: can't get there from here.
 *            getattr: can be satsified by cache
 *            setattr: all go through
 *            access: can be satisfied by cache
 *            readlink: can be satisfied by cache
 *            fsync: passes through
 *            inactive: passes through
 *            lookup: can be satisfied by cache
 *            create: passes through
 *            remove: passes through
 *            link: passes through
 *            rename: passes through
 *            mkdir: passes through
 *            rmdir: passes through
 *            symlink: passes through
 *            readdir: may be redirected to UFS
 *                     may cause an "internal" open/close
 */

#define CFS_OPEN_STATS     0
#define CFS_CLOSE_STATS    1
#define CFS_RDWR_STATS     2
#define CFS_IOCTL_STATS    3
#define CFS_SELECT_STATS   4
#define CFS_GETATTR_STATS  5
#define CFS_SETATTR_STATS  6
#define CFS_ACCESS_STATS   7
#define CFS_READLINK_STATS 8
#define CFS_FSYNC_STATS    9
#define CFS_INACTIVE_STATS 10
#define CFS_LOOKUP_STATS   11
#define CFS_CREATE_STATS   12
#define CFS_REMOVE_STATS   13
#define CFS_LINK_STATS     14
#define CFS_RENAME_STATS   15
#define CFS_MKDIR_STATS    16
#define CFS_RMDIR_STATS    17
#define CFS_SYMLINK_STATS  18
#define CFS_READDIR_STATS  19
#define CFS_VNODEOPS_SIZE  20


/*
 * I propose the following structres:
 */


struct cfs_op_stats {
    int opcode;       /* vfs opcode */
    long entries;     /* number of times call attempted */
    long sat_intrn;   /* number of times call satisfied by cache */
    long unsat_intrn; /* number of times call failed in cache, but
                         was not bounced to venus proper. */
    long gen_intrn;   /* number of times call generated internally */
                      /* (do we need that?) */
};


/*
 * With each call to the minicache, we'll bump the counters whenver
 * a call is satisfied internally (through the cache or through a
 * redirect), and whenever an operation is caused internally.
 * Then, we can add the total operations caught by the minicache
 * to the world-wide totals, and leave a caveat for the specific
 * graphs later.
 */
