diff options
Diffstat (limited to 'usr/src/uts/common/sys/vfs.h')
| -rw-r--r-- | usr/src/uts/common/sys/vfs.h | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/usr/src/uts/common/sys/vfs.h b/usr/src/uts/common/sys/vfs.h index 027be4f504..a8e057da40 100644 --- a/usr/src/uts/common/sys/vfs.h +++ b/usr/src/uts/common/sys/vfs.h @@ -2,9 +2,8 @@ * CDDL HEADER START * * The contents of this file are subject to the terms of the - * Common Development and Distribution License, Version 1.0 only - * (the "License"). You may not use this file except in compliance - * with the License. + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. @@ -20,7 +19,7 @@ * CDDL HEADER END */ /* - * Copyright 2005 Sun Microsystems, Inc. All rights reserved. + * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ @@ -157,6 +156,24 @@ typedef struct mntopts { } mntopts_t; /* + * The kstat structures associated with the vopstats are kept in an + * AVL tree. This is to avoid the case where a file system does not + * use a unique fsid_t for each vfs (e.g., namefs). In order to do + * this, we need a structure that the AVL tree can use that also + * references the kstat. + * Note that the vks_fsid is generated from the value reported by + * VFS_STATVFS(). + */ +typedef struct vskstat_anchor { + avl_node_t vsk_node; /* Required for use by AVL routines */ + kstat_t *vsk_ksp; /* kstat structure for vopstats */ + ulong_t vsk_fsid; /* fsid associated w/this FS */ +} vsk_anchor_t; + +extern avl_tree_t vskstat_tree; +extern kmutex_t vskstat_tree_lock; + +/* * Structure per mounted file system. Each mounted file system has * an array of operations and an instance record. * @@ -215,6 +232,12 @@ typedef struct vfs { struct zone *vfs_zone; /* zone that owns the mount */ struct vfs *vfs_zone_next; /* next VFS visible in zone */ struct vfs *vfs_zone_prev; /* prev VFS visible in zone */ + /* + * Support for statistics on the vnode operations + */ + vsk_anchor_t *vfs_vskap; /* anchor for vopstats' kstat */ + vopstats_t *vfs_fstypevsp; /* ptr to per-fstype vopstats */ + vopstats_t vfs_vopstats; /* per-mount vnode op stats */ } vfs_t; /* @@ -232,6 +255,7 @@ typedef struct vfs { #define VFS_XATTR 0x400 /* fs supports extended attributes */ #define VFS_NODEVICES 0x800 /* device-special files disallowed */ #define VFS_NOEXEC 0x1000 /* executables disallowed */ +#define VFS_STATS 0x2000 /* file system can collect stats */ #define VFS_NORESOURCE "unspecified_resource" #define VFS_NOMNTPT "unspecified_mountpoint" @@ -274,8 +298,6 @@ enum vntrans { typedef enum vntrans vntrans_t; - - /* * Operations supported on virtual file system. */ @@ -374,6 +396,7 @@ int fs_build_vector(void *vector, int *unused_ops, #define VSW_CANREMOUNT 0x04 /* file system supports remounts */ #define VSW_NOTZONESAFE 0x08 /* zone_enter(2) should fail for these files */ #define VSW_VOLATILEDEV 0x10 /* vfs_dev can change each time fs is mounted */ +#define VSW_STATS 0x20 /* file system can collect stats */ #define VSW_INSTALLED 0x8000 /* this vsw is associated with a file system */ |