1 files changed, 107 insertions, 0 deletions
diff --git a/include/linux/coda_opstats.h b/include/linux/coda_opstats.h
new file mode 100644
index 000000000..2c127e6e5
--- /dev/null
+++ b/include/linux/coda_opstats.h
@@ -0,0 +1,107 @@
+/*
+ * Operations statistics for Coda.
+ * Original version: (C) 1996 Peter Braam 
+ * Rewritten for Linux 2.1: (C) 1997 Carnegie Mellon University
+ *
+ * Carnegie Mellon encourages users of this code to contribute improvements
+ * to the Coda project. Contact Peter Braam <coda@cs.cmu.edu>.
+ */
+
+
+/*
+ * 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.
+ */