include/linux/coda_opstats.h

   1
   2 /*
   3  * Operation statistics for Coda.
   4  * Copyright (C) 1997 Carnegie Mellon University
   5  *
   6  * Carnegie Mellon University encourages users of this software
   7  * to contribute improvements to the Coda project. Contact Peter Braam
   8  * <coda@coda.cs.cmu.edu>.
   9  */
  10
  11
  12
  13 #define CFS_MOUNT_STATS  0
  14 #define CFS_UMOUNT_STATS 1
  15 #define CFS_ROOT_STATS   2
  16 #define CFS_STATFS_STATS 3
  17 #define CFS_SYNC_STATS   4
  18 #define CFS_VGET_STATS   5
  19 #define CFS_VFSOPS_SIZE  6
  20
  21 /* vnodeops:
  22  *            open: all to venus
  23  *            close: all to venus
  24  *            rdrw: bogus.  Maybe redirected to UFS.
  25  *                          May call open/close for internal opens/closes
  26  *                          (Does exec not call open?)
  27  *            ioctl: causes a lookupname
  28  *                   passes through
  29  *            select: can't get there from here.
  30  *            getattr: can be satsified by cache
  31  *            setattr: all go through
  32  *            access: can be satisfied by cache
  33  *            readlink: can be satisfied by cache
  34  *            fsync: passes through
  35  *            inactive: passes through
  36  *            lookup: can be satisfied by cache
  37  *            create: passes through
  38  *            remove: passes through
  39  *            link: passes through
  40  *            rename: passes through
  41  *            mkdir: passes through
  42  *            rmdir: passes through
  43  *            symlink: passes through
  44  *            readdir: may be redirected to UFS
  45  *                     may cause an "internal" open/close
  46  */
  47
  48 #define CFS_OPEN_STATS     0
  49 #define CFS_CLOSE_STATS    1
  50 #define CFS_RDWR_STATS     2
  51 #define CFS_IOCTL_STATS    3
  52 #define CFS_SELECT_STATS   4
  53 #define CFS_GETATTR_STATS  5
  54 #define CFS_SETATTR_STATS  6
  55 #define CFS_ACCESS_STATS   7
  56 #define CFS_READLINK_STATS 8
  57 #define CFS_FSYNC_STATS    9
  58 #define CFS_INACTIVE_STATS 10
  59 #define CFS_LOOKUP_STATS   11
  60 #define CFS_CREATE_STATS   12
  61 #define CFS_REMOVE_STATS   13
  62 #define CFS_LINK_STATS     14
  63 #define CFS_RENAME_STATS   15
  64 #define CFS_MKDIR_STATS    16
  65 #define CFS_RMDIR_STATS    17
  66 #define CFS_SYMLINK_STATS  18
  67 #define CFS_READDIR_STATS  19
  68 #define CFS_VNODEOPS_SIZE  20
  69
  70
  71 /*
  72  * I propose the following structres:
  73  */
  74
  75
  76 struct cfs_op_stats {
  77     int opcode;       /* vfs opcode */
  78     long entries;     /* number of times call attempted */
  79     long sat_intrn;   /* number of times call satisfied by cache */
  80     long unsat_intrn; /* number of times call failed in cache, but
  81                          was not bounced to venus proper. */
  82     long gen_intrn;   /* number of times call generated internally */
  83                       /* (do we need that?) */
  84 };
  85
  86
  87 /*
  88  * With each call to the minicache, we'll bump the counters whenver
  89  * a call is satisfied internally (through the cache or through a
  90  * redirect), and whenever an operation is caused internally.
  91  * Then, we can add the total operations caught by the minicache
  92  * to the world-wide totals, and leave a caveat for the specific
  93  * graphs later.
  94  */