Whamcloud - gitweb
LU-473 llite: improve error for 2.x cli + 1.8 srv
[fs/lustre-release.git] / lustre / obdclass / lprocfs_status.c
index 44c0dee..eed7097 100644 (file)
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
+ * Copyright (c) 2011 Whamcloud, Inc.
+ */
+/*
  * This file is part of Lustre, http://www.lustre.org/
  * Lustre is a trademark of Sun Microsystems, Inc.
  *
 #include <obd_class.h>
 #include <lprocfs_status.h>
 #include <lustre_fsfilt.h>
+#include <lustre_log.h>
+#include <lustre/lustre_idl.h>
 
 #if defined(LPROCFS)
 
 #define MAX_STRING_SIZE 128
 
 /* for bug 10866, global variable */
-DECLARE_RWSEM(_lprocfs_lock);
+CFS_DECLARE_RWSEM(_lprocfs_lock);
 EXPORT_SYMBOL(_lprocfs_lock);
 
 int lprocfs_seq_release(struct inode *inode, struct file *file)
@@ -66,28 +71,36 @@ int lprocfs_seq_release(struct inode *inode, struct file *file)
 }
 EXPORT_SYMBOL(lprocfs_seq_release);
 
-struct proc_dir_entry *lprocfs_srch(struct proc_dir_entry *head,
-                                    const char *name)
+static struct proc_dir_entry *__lprocfs_srch(struct proc_dir_entry *head,
+                                             const char *name)
 {
         struct proc_dir_entry *temp;
 
         if (head == NULL)
                 return NULL;
-        LPROCFS_ENTRY();
 
         temp = head->subdir;
         while (temp != NULL) {
                 if (strcmp(temp->name, name) == 0) {
-                        LPROCFS_EXIT();
                         return temp;
                 }
 
                 temp = temp->next;
         }
-        LPROCFS_EXIT();
         return NULL;
 }
 
+struct proc_dir_entry *lprocfs_srch(struct proc_dir_entry *head,
+                                    const char *name)
+{
+        struct proc_dir_entry *temp;
+
+        LPROCFS_SRCH_ENTRY();
+        temp = __lprocfs_srch(head, name);
+        LPROCFS_SRCH_EXIT();
+        return temp;
+}
+
 /* lprocfs API calls */
 
 /* Function that emulates snprintf but also has the side effect of advancing
@@ -111,42 +124,64 @@ static int lprocfs_obd_snprintf(char **page, int end, int *len,
         return n;
 }
 
-int lprocfs_add_simple(struct proc_dir_entry *root, char *name,
-                       read_proc_t *read_proc, write_proc_t *write_proc,
-                       void *data)
+cfs_proc_dir_entry_t *lprocfs_add_simple(struct proc_dir_entry *root,
+                                         char *name,
+                                         read_proc_t *read_proc,
+                                         write_proc_t *write_proc,
+                                         void *data,
+                                         struct file_operations *fops)
 {
-        struct proc_dir_entry *proc;
+        cfs_proc_dir_entry_t *proc;
         mode_t mode = 0;
-        
+
         if (root == NULL || name == NULL)
-                return -EINVAL;
+                return ERR_PTR(-EINVAL);
         if (read_proc)
                 mode = 0444;
         if (write_proc)
                 mode |= 0200;
+        if (fops)
+                mode = 0644;
+        LPROCFS_WRITE_ENTRY();
         proc = create_proc_entry(name, mode, root);
         if (!proc) {
                 CERROR("LprocFS: No memory to create /proc entry %s", name);
-                return -ENOMEM;
+                LPROCFS_WRITE_EXIT();
+                return ERR_PTR(-ENOMEM);
         }
         proc->read_proc = read_proc;
         proc->write_proc = write_proc;
         proc->data = data;
-        return 0;
+        if (fops)
+                proc->proc_fops = fops;
+        LPROCFS_WRITE_EXIT();
+        return proc;
 }
 
 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
-                        struct proc_dir_entry *parent, const char *dest)
+                        struct proc_dir_entry *parent, const char *format, ...)
 {
         struct proc_dir_entry *entry;
+        char *dest;
+        va_list ap;
 
-        if (parent == NULL || dest == NULL)
+        if (parent == NULL || format == NULL)
                 return NULL;
 
+        OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
+        if (dest == NULL)
+                return NULL;
+
+        va_start(ap, format);
+        vsnprintf(dest, MAX_STRING_SIZE, format, ap);
+        va_end(ap);
+
         entry = proc_symlink(name, parent, dest);
         if (entry == NULL)
                 CERROR("LprocFS: Could not create symbolic link from %s to %s",
                         name, dest);
+
+        OBD_FREE(dest, MAX_STRING_SIZE + 1);
         return entry;
 }
 
@@ -164,11 +199,15 @@ static ssize_t lprocfs_fops_read(struct file *f, char __user *buf,
         if (page == NULL)
                 return -ENOMEM;
 
-        LPROCFS_ENTRY();
+        if (LPROCFS_ENTRY_AND_CHECK(dp)) {
+                rc = -ENOENT;
+                goto out;
+        }
+
         OBD_FAIL_TIMEOUT(OBD_FAIL_LPROC_REMOVE, 10);
-        if (!dp->deleted && dp->read_proc)
-                rc = dp->read_proc(page, &start, *ppos, CFS_PAGE_SIZE, 
-                        &eof, dp->data);
+        if (dp->read_proc)
+                rc = dp->read_proc(page, &start, *ppos, CFS_PAGE_SIZE,
+                                   &eof, dp->data);
         LPROCFS_EXIT();
         if (rc <= 0)
                 goto out;
@@ -188,7 +227,7 @@ static ssize_t lprocfs_fops_read(struct file *f, char __user *buf,
         }
 
         count = (rc < size) ? rc : size;
-        if (copy_to_user(buf, start, count)) {
+        if (cfs_copy_to_user(buf, start, count)) {
                 rc = -EFAULT;
                 goto out;
         }
@@ -199,13 +238,15 @@ out:
         return rc;
 }
 
-static ssize_t lprocfs_fops_write(struct file *f, const char __user *buf, size_t size, loff_t *ppos)
+static ssize_t lprocfs_fops_write(struct file *f, const char __user *buf,
+                                  size_t size, loff_t *ppos)
 {
         struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
         int rc = -EIO;
 
-        LPROCFS_ENTRY();
-        if (!dp->deleted && dp->write_proc)
+        if (LPROCFS_ENTRY_AND_CHECK(dp))
+                return -ENOENT;
+        if (dp->write_proc)
                 rc = dp->write_proc(f, buf, size, dp->data);
         LPROCFS_EXIT();
         return rc;
@@ -222,7 +263,7 @@ int lprocfs_evict_client_open(struct inode *inode, struct file *f)
         struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
         struct obd_device *obd = dp->data;
 
-        atomic_inc(&obd->obd_evict_inprogress);
+        cfs_atomic_inc(&obd->obd_evict_inprogress);
 
         return 0;
 }
@@ -232,8 +273,8 @@ int lprocfs_evict_client_release(struct inode *inode, struct file *f)
         struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
         struct obd_device *obd = dp->data;
 
-        atomic_dec(&obd->obd_evict_inprogress);
-        wake_up(&obd->obd_evict_inprogress_waitq);
+        cfs_atomic_dec(&obd->obd_evict_inprogress);
+        cfs_waitq_signal(&obd->obd_evict_inprogress_waitq);
 
         return 0;
 }
@@ -247,12 +288,26 @@ struct file_operations lprocfs_evict_client_fops = {
 };
 EXPORT_SYMBOL(lprocfs_evict_client_fops);
 
+/**
+ * Add /proc entries.
+ *
+ * \param root [in]  The parent proc entry on which new entry will be added.
+ * \param list [in]  Array of proc entries to be added.
+ * \param data [in]  The argument to be passed when entries read/write routines
+ *                   are called through /proc file.
+ *
+ * \retval 0   on success
+ *         < 0 on error
+ */
 int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
                      void *data)
 {
+        int rc = 0;
+
         if (root == NULL || list == NULL)
                 return -EINVAL;
 
+        LPROCFS_WRITE_ENTRY();
         while (list->name != NULL) {
                 struct proc_dir_entry *cur_root, *proc;
                 char *pathcopy, *cur, *next, pathbuf[64];
@@ -265,7 +320,7 @@ int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
                 if (strlen(list->name) > sizeof(pathbuf) - 1) {
                         OBD_ALLOC(pathcopy, pathsize);
                         if (pathcopy == NULL)
-                                return -ENOMEM;
+                                GOTO(out, rc = -ENOMEM);
                 } else {
                         pathcopy = pathbuf;
                 }
@@ -277,7 +332,7 @@ int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
                         if (*cur =='\0') /* skip double/trailing "/" */
                                 continue;
 
-                        proc = lprocfs_srch(cur_root, cur);
+                        proc = __lprocfs_srch(cur_root, cur);
                         CDEBUG(D_OTHER, "cur_root=%s, cur=%s, next=%s, (%s)\n",
                                cur_root->name, cur, next,
                                (proc ? "exists" : "new"));
@@ -286,10 +341,14 @@ int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
                                             proc_mkdir(cur, cur_root));
                         } else if (proc == NULL) {
                                 mode_t mode = 0;
-                                if (list->read_fptr)
-                                        mode = 0444;
-                                if (list->write_fptr)
-                                        mode |= 0200;
+                                if (list->proc_mode != 0000) {
+                                        mode = list->proc_mode;
+                                } else {
+                                        if (list->read_fptr)
+                                                mode = 0444;
+                                        if (list->write_fptr)
+                                                mode |= 0200;
+                                }
                                 proc = create_proc_entry(cur, mode, cur_root);
                         }
                 }
@@ -300,7 +359,7 @@ int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
                 if (cur_root == NULL || proc == NULL) {
                         CERROR("LprocFS: No memory to create /proc entry %s",
                                list->name);
-                        return -ENOMEM;
+                        GOTO(out, rc = -ENOMEM);
                 }
 
                 if (list->fops)
@@ -312,7 +371,9 @@ int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
                 proc->data = (list->data ? list->data : data);
                 list++;
         }
-        return 0;
+out:
+        LPROCFS_WRITE_EXIT();
+        return rc;
 }
 
 void lprocfs_remove(struct proc_dir_entry **rooth)
@@ -343,9 +404,23 @@ void lprocfs_remove(struct proc_dir_entry **rooth)
                          "0x%p  %s/%s len %d\n", rm_entry, temp->name,
                          rm_entry->name, (int)strlen(rm_entry->name));
 
-                /* Now, the rm_entry->deleted flags is protected 
+#ifdef HAVE_PROCFS_USERS
+                /* if procfs uses user count to synchronize deletion of
+                 * proc entry, there is no protection for rm_entry->data,
+                 * then lprocfs_fops_read and lprocfs_fops_write maybe
+                 * call proc_dir_entry->read_proc (or write_proc) with
+                 * proc_dir_entry->data == NULL, then cause kernel Oops.
+                 * see bug19706 for detailed information */
+
+                /* procfs won't free rm_entry->data if it isn't a LINK,
+                 * and Lustre won't use rm_entry->data if it is a LINK */
+                if (S_ISLNK(rm_entry->mode))
+                        rm_entry->data = NULL;
+#else
+                /* Now, the rm_entry->deleted flags is protected
                  * by _lprocfs_lock. */
                 rm_entry->data = NULL;
+#endif
                 remove_proc_entry(rm_entry->name, temp);
                 if (temp == parent)
                         break;
@@ -387,7 +462,7 @@ struct proc_dir_entry *lprocfs_register(const char *name,
 int lprocfs_rd_uint(char *page, char **start, off_t off,
                     int count, int *eof, void *data)
 {
-        unsigned int *temp = (unsigned int *)data;
+        unsigned int *temp = data;
         return snprintf(page, count, "%u\n", *temp);
 }
 
@@ -399,7 +474,7 @@ int lprocfs_wr_uint(struct file *file, const char *buffer,
         unsigned long tmp;
 
         dummy[MAX_STRING_SIZE] = '\0';
-        if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
+        if (cfs_copy_from_user(dummy, buffer, MAX_STRING_SIZE))
                 return -EFAULT;
 
         tmp = simple_strtoul(dummy, &end, 0);
@@ -421,34 +496,34 @@ int lprocfs_rd_u64(char *page, char **start, off_t off,
 int lprocfs_rd_atomic(char *page, char **start, off_t off,
                    int count, int *eof, void *data)
 {
-        atomic_t *atom = (atomic_t *)data;
+        cfs_atomic_t *atom = data;
         LASSERT(atom != NULL);
         *eof = 1;
-        return snprintf(page, count, "%d\n", atomic_read(atom));
+        return snprintf(page, count, "%d\n", cfs_atomic_read(atom));
 }
 
 int lprocfs_wr_atomic(struct file *file, const char *buffer,
                       unsigned long count, void *data)
 {
-        atomic_t *atm = data;
+        cfs_atomic_t *atm = data;
         int val = 0;
         int rc;
-        
+
         rc = lprocfs_write_helper(buffer, count, &val);
         if (rc < 0)
                 return rc;
 
         if (val <= 0)
                 return -ERANGE;
-                
-        atomic_set(atm, val);
+
+        cfs_atomic_set(atm, val);
         return count;
 }
 
 int lprocfs_rd_uuid(char *page, char **start, off_t off, int count,
                     int *eof, void *data)
 {
-        struct obd_device *obd = (struct obd_device*)data;
+        struct obd_device *obd = data;
 
         LASSERT(obd != NULL);
         *eof = 1;
@@ -456,9 +531,9 @@ int lprocfs_rd_uuid(char *page, char **start, off_t off, int count,
 }
 
 int lprocfs_rd_name(char *page, char **start, off_t off, int count,
-                    int *eof, voiddata)
+                    int *eof, void *data)
 {
-        struct obd_device *dev = (struct obd_device *)data;
+        struct obd_device *dev = data;
 
         LASSERT(dev != NULL);
         LASSERT(dev->obd_name != NULL);
@@ -469,7 +544,7 @@ int lprocfs_rd_name(char *page, char **start, off_t off, int count,
 int lprocfs_rd_fstype(char *page, char **start, off_t off, int count, int *eof,
                       void *data)
 {
-        struct obd_device *obd = (struct obd_device *)data;
+        struct obd_device *obd = data;
 
         LASSERT(obd != NULL);
         LASSERT(obd->obd_fsops != NULL);
@@ -481,7 +556,8 @@ int lprocfs_rd_blksize(char *page, char **start, off_t off, int count,
                        int *eof, void *data)
 {
         struct obd_statfs osfs;
-        int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
+        int rc = obd_statfs(data, &osfs,
+                            cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
                             OBD_STATFS_NODELAY);
         if (!rc) {
                 *eof = 1;
@@ -494,7 +570,8 @@ int lprocfs_rd_kbytestotal(char *page, char **start, off_t off, int count,
                            int *eof, void *data)
 {
         struct obd_statfs osfs;
-        int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
+        int rc = obd_statfs(data, &osfs,
+                            cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
                             OBD_STATFS_NODELAY);
         if (!rc) {
                 __u32 blk_size = osfs.os_bsize >> 10;
@@ -513,7 +590,8 @@ int lprocfs_rd_kbytesfree(char *page, char **start, off_t off, int count,
                           int *eof, void *data)
 {
         struct obd_statfs osfs;
-        int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
+        int rc = obd_statfs(data, &osfs,
+                            cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
                             OBD_STATFS_NODELAY);
         if (!rc) {
                 __u32 blk_size = osfs.os_bsize >> 10;
@@ -532,7 +610,8 @@ int lprocfs_rd_kbytesavail(char *page, char **start, off_t off, int count,
                            int *eof, void *data)
 {
         struct obd_statfs osfs;
-        int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
+        int rc = obd_statfs(data, &osfs,
+                            cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
                             OBD_STATFS_NODELAY);
         if (!rc) {
                 __u32 blk_size = osfs.os_bsize >> 10;
@@ -551,7 +630,8 @@ int lprocfs_rd_filestotal(char *page, char **start, off_t off, int count,
                           int *eof, void *data)
 {
         struct obd_statfs osfs;
-        int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
+        int rc = obd_statfs(data, &osfs,
+                            cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
                             OBD_STATFS_NODELAY);
         if (!rc) {
                 *eof = 1;
@@ -565,7 +645,8 @@ int lprocfs_rd_filesfree(char *page, char **start, off_t off, int count,
                          int *eof, void *data)
 {
         struct obd_statfs osfs;
-        int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
+        int rc = obd_statfs(data, &osfs,
+                            cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
                             OBD_STATFS_NODELAY);
         if (!rc) {
                 *eof = 1;
@@ -577,7 +658,7 @@ int lprocfs_rd_filesfree(char *page, char **start, off_t off, int count,
 int lprocfs_rd_server_uuid(char *page, char **start, off_t off, int count,
                            int *eof, void *data)
 {
-        struct obd_device *obd = (struct obd_device *)data;
+        struct obd_device *obd = data;
         struct obd_import *imp;
         char *imp_state_name = NULL;
         int rc = 0;
@@ -598,7 +679,7 @@ int lprocfs_rd_server_uuid(char *page, char **start, off_t off, int count,
 int lprocfs_rd_conn_uuid(char *page, char **start, off_t off, int count,
                          int *eof,  void *data)
 {
-        struct obd_device *obd = (struct obd_device*)data;
+        struct obd_device *obd = data;
         struct ptlrpc_connection *conn;
         int rc = 0;
 
@@ -606,9 +687,8 @@ int lprocfs_rd_conn_uuid(char *page, char **start, off_t off, int count,
 
         LPROCFS_CLIMP_CHECK(obd);
         conn = obd->u.cli.cl_import->imp_connection;
-        LASSERT(conn != NULL);
         *eof = 1;
-        if (obd->u.cli.cl_import) {
+        if (conn && obd->u.cli.cl_import) {
                 rc = snprintf(page, count, "%s\n",
                               conn->c_remote_uuid.uuid);
         } else {
@@ -619,6 +699,304 @@ int lprocfs_rd_conn_uuid(char *page, char **start, off_t off, int count,
         return rc;
 }
 
+/** add up per-cpu counters */
+void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
+                           struct lprocfs_counter *cnt)
+{
+        unsigned int num_cpu;
+        struct lprocfs_counter t;
+        struct lprocfs_counter *percpu_cntr;
+        int centry, i;
+
+        memset(cnt, 0, sizeof(*cnt));
+
+        if (stats == NULL) {
+                /* set count to 1 to avoid divide-by-zero errs in callers */
+                cnt->lc_count = 1;
+                return;
+        }
+
+        cnt->lc_min = LC_MIN_INIT;
+
+        num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU);
+
+        for (i = 0; i < num_cpu; i++) {
+                percpu_cntr = &(stats->ls_percpu[i])->lp_cntr[idx];
+
+                do {
+                        centry = cfs_atomic_read(&percpu_cntr-> \
+                                                 lc_cntl.la_entry);
+                        t.lc_count = percpu_cntr->lc_count;
+                        t.lc_sum = percpu_cntr->lc_sum;
+                        t.lc_min = percpu_cntr->lc_min;
+                        t.lc_max = percpu_cntr->lc_max;
+                        t.lc_sumsquare = percpu_cntr->lc_sumsquare;
+                } while (centry != cfs_atomic_read(&percpu_cntr->lc_cntl. \
+                                                   la_entry) &&
+                         centry != cfs_atomic_read(&percpu_cntr->lc_cntl. \
+                                                   la_exit));
+                cnt->lc_count += t.lc_count;
+                cnt->lc_sum += t.lc_sum;
+                if (t.lc_min < cnt->lc_min)
+                        cnt->lc_min = t.lc_min;
+                if (t.lc_max > cnt->lc_max)
+                        cnt->lc_max = t.lc_max;
+                cnt->lc_sumsquare += t.lc_sumsquare;
+        }
+
+        cnt->lc_units = stats->ls_percpu[0]->lp_cntr[idx].lc_units;
+        lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU);
+}
+
+/**
+ * Append a space separated list of current set flags to str.
+ */
+#define flag2str(flag) \
+        if (imp->imp_##flag && max - len > 0) \
+             len += snprintf(str + len, max - len, "%s" #flag, len ? ", " : "");
+static int obd_import_flags2str(struct obd_import *imp, char *str, int max)
+{
+        int len = 0;
+
+        if (imp->imp_obd->obd_no_recov)
+                len += snprintf(str, max - len, "no_recov");
+
+        flag2str(invalid);
+        flag2str(deactive);
+        flag2str(replayable);
+        flag2str(pingable);
+        return len;
+}
+#undef flags2str
+
+static const char *obd_connect_names[] = {
+        "read_only",
+        "lov_index",
+        "unused",
+        "write_grant",
+        "server_lock",
+        "version",
+        "request_portal",
+        "acl",
+        "xattr",
+        "create_on_write",
+        "truncate_lock",
+        "initial_transno",
+        "inode_bit_locks",
+        "join_file(obsolete)",
+        "getattr_by_fid",
+        "no_oh_for_devices",
+        "remote_client",
+        "remote_client_by_force",
+        "max_byte_per_rpc",
+        "64bit_qdata",
+        "mds_capability",
+        "oss_capability",
+        "early_lock_cancel",
+        "som",
+        "adaptive_timeouts",
+        "lru_resize",
+        "mds_mds_connection",
+        "real_conn",
+        "change_qunit_size",
+        "alt_checksum_algorithm",
+        "fid_is_enabled",
+        "version_recovery",
+        "pools",
+        "grant_shrink",
+        "skip_orphan",
+        "large_ea",
+        "full20",
+        "layout_lock",
+        "64bithash",
+        "object_max_bytes",
+        NULL
+};
+
+int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep)
+{
+        __u64 mask = 1;
+        int i, ret = 0;
+
+        for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
+                if (flags & mask)
+                        ret += snprintf(page + ret, count - ret, "%s%s",
+                                        ret ? sep : "", obd_connect_names[i]);
+        }
+        if (flags & ~(mask - 1))
+                ret += snprintf(page + ret, count - ret,
+                                "%sunknown flags "LPX64,
+                                ret ? sep : "", flags & ~(mask - 1));
+        return ret;
+}
+EXPORT_SYMBOL(obd_connect_flags2str);
+
+int lprocfs_rd_import(char *page, char **start, off_t off, int count,
+                      int *eof, void *data)
+{
+        struct lprocfs_counter ret;
+        struct obd_device *obd = (struct obd_device *)data;
+        struct obd_import *imp;
+        struct obd_import_conn *conn;
+        int i, j, k, rw = 0;
+
+        LASSERT(obd != NULL);
+        LPROCFS_CLIMP_CHECK(obd);
+        imp = obd->u.cli.cl_import;
+        *eof = 1;
+
+        i = snprintf(page, count,
+                     "import:\n"
+                     "    name: %s\n"
+                     "    target: %s\n"
+                     "    state: %s\n"
+                     "    connect_flags: [",
+                     obd->obd_name,
+                     obd2cli_tgt(obd),
+                     ptlrpc_import_state_name(imp->imp_state));
+        i += obd_connect_flags2str(page + i, count - i,
+                                   imp->imp_connect_data.ocd_connect_flags,
+                                   ", ");
+        i += snprintf(page + i, count - i,
+                      "]\n"
+                      "    import_flags: [");
+        i += obd_import_flags2str(imp, page + i, count - i);
+
+        i += snprintf(page + i, count - i,
+                      "]\n"
+                      "    connection:\n"
+                      "       failover_nids: [");
+        cfs_spin_lock(&imp->imp_lock);
+        j = 0;
+        cfs_list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
+                i += snprintf(page + i, count - i, "%s%s", j ? ", " : "",
+                              libcfs_nid2str(conn->oic_conn->c_peer.nid));
+                j++;
+        }
+        cfs_spin_unlock(&imp->imp_lock);
+        i += snprintf(page + i, count - i,
+                      "]\n"
+                      "       current_connection: %s\n"
+                      "       connection_attempts: %u\n"
+                      "       generation: %u\n"
+                      "       in-progress_invalidations: %u\n",
+                      libcfs_nid2str(imp->imp_connection->c_peer.nid),
+                      imp->imp_conn_cnt,
+                      imp->imp_generation,
+                      cfs_atomic_read(&imp->imp_inval_count));
+
+        lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
+        if (ret.lc_count != 0) {
+                /* first argument to do_div MUST be __u64 */
+                __u64 sum = ret.lc_sum;
+                do_div(sum, ret.lc_count);
+                ret.lc_sum = sum;
+        } else
+                ret.lc_sum = 0;
+        i += snprintf(page + i, count - i,
+                      "    rpcs:\n"
+                      "       inflight: %u\n"
+                      "       unregistering: %u\n"
+                      "       timeouts: %u\n"
+                      "       avg_waittime: "LPU64" %s\n",
+                      cfs_atomic_read(&imp->imp_inflight),
+                      cfs_atomic_read(&imp->imp_unregistering),
+                      cfs_atomic_read(&imp->imp_timeouts),
+                      ret.lc_sum, ret.lc_units);
+
+        k = 0;
+        for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
+                if (imp->imp_at.iat_portal[j] == 0)
+                        break;
+                k = max_t(unsigned int, k,
+                          at_get(&imp->imp_at.iat_service_estimate[j]));
+        }
+        i += snprintf(page + i, count - i,
+                      "    service_estimates:\n"
+                      "       services: %u sec\n"
+                      "       network: %u sec\n",
+                      k,
+                      at_get(&imp->imp_at.iat_net_latency));
+
+        i += snprintf(page + i, count - i,
+                      "    transactions:\n"
+                      "       last_replay: "LPU64"\n"
+                      "       peer_committed: "LPU64"\n"
+                      "       last_checked: "LPU64"\n",
+                      imp->imp_last_replay_transno,
+                      imp->imp_peer_committed_transno,
+                      imp->imp_last_transno_checked);
+
+        /* avg data rates */
+        for (rw = 0; rw <= 1; rw++) {
+                lprocfs_stats_collect(obd->obd_svc_stats,
+                                      PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
+                                      &ret);
+                if (ret.lc_sum > 0 && ret.lc_count > 0) {
+                        /* first argument to do_div MUST be __u64 */
+                        __u64 sum = ret.lc_sum;
+                        do_div(sum, ret.lc_count);
+                        ret.lc_sum = sum;
+                        i += snprintf(page + i, count - i,
+                                      "    %s_data_averages:\n"
+                                      "       bytes_per_rpc: "LPU64"\n",
+                                      rw ? "write" : "read",
+                                      ret.lc_sum);
+                }
+                k = (int)ret.lc_sum;
+                j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
+                lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
+                if (ret.lc_sum > 0 && ret.lc_count != 0) {
+                        /* first argument to do_div MUST be __u64 */
+                        __u64 sum = ret.lc_sum;
+                        do_div(sum, ret.lc_count);
+                        ret.lc_sum = sum;
+                        i += snprintf(page + i, count - i,
+                                      "       %s_per_rpc: "LPU64"\n",
+                                      ret.lc_units, ret.lc_sum);
+                        j = (int)ret.lc_sum;
+                        if (j > 0)
+                                i += snprintf(page + i, count - i,
+                                              "       MB_per_sec: %u.%.02u\n",
+                                              k / j, (100 * k / j) % 100);
+                }
+        }
+
+        LPROCFS_CLIMP_EXIT(obd);
+        return i;
+}
+
+int lprocfs_rd_state(char *page, char **start, off_t off, int count,
+                      int *eof, void *data)
+{
+        struct obd_device *obd = (struct obd_device *)data;
+        struct obd_import *imp;
+        int i, j, k;
+
+        LASSERT(obd != NULL);
+        LPROCFS_CLIMP_CHECK(obd);
+        imp = obd->u.cli.cl_import;
+        *eof = 1;
+
+        i = snprintf(page, count, "current_state: %s\n",
+                     ptlrpc_import_state_name(imp->imp_state));
+        i += snprintf(page + i, count - i,
+                      "state_history:\n");
+        k = imp->imp_state_hist_idx;
+        for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
+                struct import_state_hist *ish =
+                        &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
+                if (ish->ish_state == 0)
+                        continue;
+                i += snprintf(page + i, count - i, " - ["CFS_TIME_T", %s]\n",
+                              ish->ish_time,
+                              ptlrpc_import_state_name(ish->ish_state));
+        }
+
+        LPROCFS_CLIMP_EXIT(obd);
+        return i;
+}
+
 int lprocfs_at_hist_helper(char *page, int count, int rc,
                            struct adaptive_timeout *at)
 {
@@ -653,7 +1031,6 @@ int lprocfs_rd_timeouts(char *page, char **start, off_t off, int count,
                        "%-10s : %ld, "DHMS_FMT" ago\n",
                        "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
 
-
         cur = at_get(&imp->imp_at.iat_net_latency);
         worst = imp->imp_at.iat_net_latency.at_worst_ever;
         worstt = imp->imp_at.iat_net_latency.at_worst_time;
@@ -683,60 +1060,18 @@ int lprocfs_rd_timeouts(char *page, char **start, off_t off, int count,
         return rc;
 }
 
-static const char *obd_connect_names[] = {
-        "read_only",
-        "lov_index",
-        "unused",
-        "write_grant",
-        "server_lock",
-        "version",
-        "request_portal",
-        "acl",
-        "xattr",
-        "create_on_write",
-        "truncate_lock",
-        "initial_transno",
-        "inode_bit_locks",
-        "join_file",
-        "getattr_by_fid",
-        "no_oh_for_devices",
-        "local_client",
-        "remote_client",
-        "max_byte_per_rpc",
-        "64bit_qdata",
-        "mds_capability",
-        "oss_capability",
-        "early_lock_cancel",
-        "size_on_mds",
-        "adaptive_timeouts",
-        "lru_resize",
-        "mds_mds_connection",
-        "real_conn",
-        "change_qunit_size",
-        "alt_checksum_algorithm",
-        "fid_is_enabled",
-        NULL
-};
-
 int lprocfs_rd_connect_flags(char *page, char **start, off_t off,
                              int count, int *eof, void *data)
 {
         struct obd_device *obd = data;
-        __u64 mask = 1, flags;
-        int i, ret = 0;
+        __u64 flags;
+        int ret = 0;
 
         LPROCFS_CLIMP_CHECK(obd);
         flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
         ret = snprintf(page, count, "flags="LPX64"\n", flags);
-        for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
-                if (flags & mask)
-                        ret += snprintf(page + ret, count - ret, "%s\n",
-                                        obd_connect_names[i]);
-        }
-        if (flags & ~(mask - 1))
-                ret += snprintf(page + ret, count - ret,
-                                "unknown flags "LPX64"\n", flags & ~(mask - 1));
-
+        ret += obd_connect_flags2str(page + ret, count - ret, flags, "\n");
+        ret += snprintf(page + ret, count - ret, "\n");
         LPROCFS_CLIMP_EXIT(obd);
         return ret;
 }
@@ -745,7 +1080,7 @@ EXPORT_SYMBOL(lprocfs_rd_connect_flags);
 int lprocfs_rd_num_exports(char *page, char **start, off_t off, int count,
                            int *eof,  void *data)
 {
-        struct obd_device *obd = (struct obd_device*)data;
+        struct obd_device *obd = data;
 
         LASSERT(obd != NULL);
         *eof = 1;
@@ -783,14 +1118,18 @@ int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list)
 
 int lprocfs_obd_cleanup(struct obd_device *obd)
 {
-        if (!obd) 
+        if (!obd)
                 return -EINVAL;
         if (obd->obd_proc_exports_entry) {
                 /* Should be no exports left */
                 LASSERT(obd->obd_proc_exports_entry->subdir == NULL);
                 lprocfs_remove(&obd->obd_proc_exports_entry);
+                obd->obd_proc_exports_entry = NULL;
+        }
+        if (obd->obd_proc_entry) {
+                lprocfs_remove(&obd->obd_proc_entry);
+                obd->obd_proc_entry = NULL;
         }
-        lprocfs_remove(&obd->obd_proc_entry);
         return 0;
 }
 
@@ -800,10 +1139,11 @@ static void lprocfs_free_client_stats(struct nid_stat *client_stat)
                client_stat->nid_proc, client_stat->nid_stats,
                client_stat->nid_brw_stats);
 
-        LASSERTF(client_stat->nid_exp_ref_count == 0, "count %d\n",
-                 client_stat->nid_exp_ref_count);
+        LASSERTF(cfs_atomic_read(&client_stat->nid_exp_ref_count) == 0,
+                 "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
+                 atomic_read(&client_stat->nid_exp_ref_count));
 
-        hlist_del_init(&client_stat->nid_hash);
+        cfs_hlist_del_init(&client_stat->nid_hash);
 
         if (client_stat->nid_proc)
                 lprocfs_remove(&client_stat->nid_proc);
@@ -812,9 +1152,12 @@ static void lprocfs_free_client_stats(struct nid_stat *client_stat)
                 lprocfs_free_stats(&client_stat->nid_stats);
 
         if (client_stat->nid_brw_stats)
-                OBD_FREE(client_stat->nid_brw_stats, sizeof(struct brw_stats));
+                OBD_FREE_PTR(client_stat->nid_brw_stats);
+
+        if (client_stat->nid_ldlm_stats)
+                lprocfs_free_stats(&client_stat->nid_ldlm_stats);
 
-        OBD_FREE(client_stat, sizeof(*client_stat));
+        OBD_FREE_PTR(client_stat);
         return;
 
 }
@@ -826,10 +1169,10 @@ void lprocfs_free_per_client_stats(struct obd_device *obd)
 
         /* we need extra list - because hash_exit called to early */
         /* not need locking because all clients is died */
-        while(!list_empty(&obd->obd_nid_stats)) {
-                stat = list_entry(obd->obd_nid_stats.next,
-                                  struct nid_stat, nid_list);
-                list_del_init(&stat->nid_list);
+        while(!cfs_list_empty(&obd->obd_nid_stats)) {
+                stat = cfs_list_entry(obd->obd_nid_stats.next,
+                                      struct nid_stat, nid_list);
+                cfs_list_del_init(&stat->nid_list);
                 lprocfs_free_client_stats(stat);
         }
 
@@ -850,7 +1193,7 @@ struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
         if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
                 num_cpu = 1;
         else
-                num_cpu = num_possible_cpus();
+                num_cpu = cfs_num_possible_cpus();
 
         OBD_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_cpu]));
         if (stats == NULL)
@@ -858,7 +1201,7 @@ struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
 
         if (flags & LPROCFS_STATS_FLAG_NOPERCPU) {
                 stats->ls_flags = flags;
-                spin_lock_init(&stats->ls_lock);
+                cfs_spin_lock_init(&stats->ls_lock);
                 /* Use this lock only if there are no percpu areas */
         } else {
                 stats->ls_flags = 0;
@@ -866,7 +1209,7 @@ struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
 
         percpusize = offsetof(struct lprocfs_percpu, lp_cntr[num]);
         if (num_cpu > 1)
-                percpusize = L1_CACHE_ALIGN(percpusize);
+                percpusize = CFS_L1_CACHE_ALIGN(percpusize);
 
         for (i = 0; i < num_cpu; i++) {
                 OBD_ALLOC(stats->ls_percpu[i], percpusize);
@@ -902,11 +1245,11 @@ void lprocfs_free_stats(struct lprocfs_stats **statsh)
         if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
                 num_cpu = 1;
         else
-                num_cpu = num_possible_cpus();
+                num_cpu = cfs_num_possible_cpus();
 
         percpusize = offsetof(struct lprocfs_percpu, lp_cntr[stats->ls_num]);
         if (num_cpu > 1)
-                percpusize = L1_CACHE_ALIGN(percpusize);
+                percpusize = CFS_L1_CACHE_ALIGN(percpusize);
         for (i = 0; i < num_cpu; i++)
                 OBD_FREE(stats->ls_percpu[i], percpusize);
         OBD_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_cpu]));
@@ -923,17 +1266,17 @@ void lprocfs_clear_stats(struct lprocfs_stats *stats)
         for (i = 0; i < num_cpu; i++) {
                 for (j = 0; j < stats->ls_num; j++) {
                         percpu_cntr = &(stats->ls_percpu[i])->lp_cntr[j];
-                        atomic_inc(&percpu_cntr->lc_cntl.la_entry);
+                        cfs_atomic_inc(&percpu_cntr->lc_cntl.la_entry);
                         percpu_cntr->lc_count = 0;
                         percpu_cntr->lc_sum = 0;
                         percpu_cntr->lc_min = LC_MIN_INIT;
                         percpu_cntr->lc_max = 0;
                         percpu_cntr->lc_sumsquare = 0;
-                        atomic_inc(&percpu_cntr->lc_cntl.la_exit);
+                        cfs_atomic_inc(&percpu_cntr->lc_cntl.la_exit);
                 }
         }
 
-        lprocfs_stats_unlock(stats);
+        lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU);
 }
 
 static ssize_t lprocfs_stats_seq_write(struct file *file, const char *buf,
@@ -971,14 +1314,13 @@ static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
 {
        struct lprocfs_stats *stats = p->private;
-       struct lprocfs_counter  *cntr = v;
-       struct lprocfs_counter  t, ret = { .lc_min = LC_MIN_INIT };
-       int i, idx, rc;
-       unsigned int num_cpu;
+       struct lprocfs_counter *cntr = v;
+       struct lprocfs_counter ret;
+       int idx, rc = 0;
 
        if (cntr == &(stats->ls_percpu[0])->lp_cntr[0]) {
                struct timeval now;
-               do_gettimeofday(&now);
+               cfs_gettimeofday(&now);
                rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
                                "snapshot_time", now.tv_sec, now.tv_usec);
                if (rc < 0)
@@ -986,36 +1328,14 @@ static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
        }
        idx = cntr - &(stats->ls_percpu[0])->lp_cntr[0];
 
-       if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
-               num_cpu = 1;
-       else
-               num_cpu = num_possible_cpus();
-
-       for (i = 0; i < num_cpu; i++) {
-               struct lprocfs_counter *percpu_cntr =
-                       &(stats->ls_percpu[i])->lp_cntr[idx];
-               int centry;
-
-               do {
-                       centry = atomic_read(&percpu_cntr->lc_cntl.la_entry);
-                       t.lc_count = percpu_cntr->lc_count;
-                       t.lc_sum = percpu_cntr->lc_sum;
-                       t.lc_min = percpu_cntr->lc_min;
-                       t.lc_max = percpu_cntr->lc_max;
-                       t.lc_sumsquare = percpu_cntr->lc_sumsquare;
-               } while (centry != atomic_read(&percpu_cntr->lc_cntl.la_entry) &&
-                        centry != atomic_read(&percpu_cntr->lc_cntl.la_exit));
-               ret.lc_count += t.lc_count;
-               ret.lc_sum += t.lc_sum;
-               if (t.lc_min < ret.lc_min)
-                       ret.lc_min = t.lc_min;
-               if (t.lc_max > ret.lc_max)
-                       ret.lc_max = t.lc_max;
-               ret.lc_sumsquare += t.lc_sumsquare;
-       }
+       lprocfs_stats_collect(stats, idx, &ret);
+
+       if (ret.lc_count == 0)
+               goto out;
 
        rc = seq_printf(p, "%-25s "LPD64" samples [%s]", cntr->lc_name,
                        ret.lc_count, cntr->lc_units);
+
        if (rc < 0)
                goto out;
 
@@ -1047,7 +1367,9 @@ static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
         struct seq_file *seq;
         int rc;
 
-        LPROCFS_ENTRY_AND_CHECK(dp);
+        if (LPROCFS_ENTRY_AND_CHECK(dp))
+                return -ENOENT;
+
         rc = seq_open(file, &lprocfs_stats_seq_sops);
         if (rc) {
                 LPROCFS_EXIT();
@@ -1073,11 +1395,18 @@ int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
         struct proc_dir_entry *entry;
         LASSERT(root != NULL);
 
+        LPROCFS_WRITE_ENTRY();
         entry = create_proc_entry(name, 0644, root);
+        if (entry) {
+                entry->proc_fops = &lprocfs_stats_seq_fops;
+                entry->data = stats;
+        }
+
+        LPROCFS_WRITE_EXIT();
+
         if (entry == NULL)
                 return -ENOMEM;
-        entry->proc_fops = &lprocfs_stats_seq_fops;
-        entry->data = (void *)stats;
+
         return 0;
 }
 
@@ -1103,7 +1432,7 @@ void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
                 c->lc_units = units;
         }
 
-        lprocfs_stats_unlock(stats);
+        lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU);
 }
 EXPORT_SYMBOL(lprocfs_counter_init);
 
@@ -1139,25 +1468,16 @@ void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, checkmd);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preallocate);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precreate);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
+        LPROCFS_OBD_OP_INIT(num_private_stats, stats, create_async);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, brw);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, brw_async);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, prep_async_page);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, reget_short_lock);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, release_short_lock);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, queue_async_io);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, queue_group_io);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, trigger_group_io);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_async_flags);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, teardown_async_page);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, merge_lvb);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, adjust_kms);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, punch);
@@ -1168,11 +1488,10 @@ void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, enqueue);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, match);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata);
+        LPROCFS_OBD_OP_INIT(num_private_stats, stats, find_cbdata);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel_unused);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, join_lru);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, extent_calc);
@@ -1187,11 +1506,14 @@ void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
+        LPROCFS_OBD_OP_INIT(num_private_stats, stats, quota_adjust_qunit);
         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, register_page_removal_cb);
-        LPROCFS_OBD_OP_INIT(num_private_stats,stats,unregister_page_removal_cb);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats, register_lock_cancel_cb);
-        LPROCFS_OBD_OP_INIT(num_private_stats, stats,unregister_lock_cancel_cb);
+        LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
+        LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
+        LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
+        LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
+        LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
+        LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
 }
 
 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
@@ -1234,7 +1556,7 @@ int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
 
 void lprocfs_free_obd_stats(struct obd_device *obd)
 {
-        if (obd->obd_stats) 
+        if (obd->obd_stats)
                 lprocfs_free_stats(&obd->obd_stats);
 }
 
@@ -1245,25 +1567,11 @@ do {                                                                    \
         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");           \
 } while (0)
 
-int lprocfs_alloc_md_stats(struct obd_device *obd,
-                           unsigned num_private_stats)
+void lprocfs_init_mps_stats(int num_private_stats, struct lprocfs_stats *stats)
 {
-        struct lprocfs_stats *stats;
-        unsigned int num_stats;
-        int rc, i;
-
-        LASSERT(obd->md_stats == NULL);
-        LASSERT(obd->obd_proc_entry != NULL);
-        LASSERT(obd->md_cntr_base == 0);
-
-        num_stats = 1 + MD_COUNTER_OFFSET(get_remote_perm) +
-                    num_private_stats;
-        stats = lprocfs_alloc_stats(num_stats, 0);
-        if (stats == NULL)
-                return -ENOMEM;
-
         LPROCFS_MD_OP_INIT(num_private_stats, stats, getstatus);
         LPROCFS_MD_OP_INIT(num_private_stats, stats, change_cbdata);
+        LPROCFS_MD_OP_INIT(num_private_stats, stats, find_cbdata);
         LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
         LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
         LPROCFS_MD_OP_INIT(num_private_stats, stats, done_writing);
@@ -1289,9 +1597,30 @@ int lprocfs_alloc_md_stats(struct obd_device *obd,
         LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
         LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
         LPROCFS_MD_OP_INIT(num_private_stats, stats, renew_capa);
+        LPROCFS_MD_OP_INIT(num_private_stats, stats, unpack_capa);
         LPROCFS_MD_OP_INIT(num_private_stats, stats, get_remote_perm);
         LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
         LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
+}
+
+int lprocfs_alloc_md_stats(struct obd_device *obd,
+                           unsigned num_private_stats)
+{
+        struct lprocfs_stats *stats;
+        unsigned int num_stats;
+        int rc, i;
+
+        LASSERT(obd->md_stats == NULL);
+        LASSERT(obd->obd_proc_entry != NULL);
+        LASSERT(obd->md_cntr_base == 0);
+
+        num_stats = 1 + MD_COUNTER_OFFSET(revalidate_lock) +
+                    num_private_stats;
+        stats = lprocfs_alloc_stats(num_stats, 0);
+        if (stats == NULL)
+                return -ENOMEM;
+
+        lprocfs_init_mps_stats(num_private_stats, stats);
 
         for (i = num_private_stats; i < num_stats; i++) {
                 if (stats->ls_percpu[0]->lp_cntr[i].lc_name == NULL) {
@@ -1301,7 +1630,7 @@ int lprocfs_alloc_md_stats(struct obd_device *obd,
                         LBUG();
                 }
         }
-        rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
+        rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
         if (rc < 0) {
                 lprocfs_free_stats(&stats);
         } else {
@@ -1317,14 +1646,37 @@ void lprocfs_free_md_stats(struct obd_device *obd)
 
         if (stats != NULL) {
                 obd->md_stats = NULL;
+                obd->md_cntr_base = 0;
                 lprocfs_free_stats(&stats);
         }
 }
 
+void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
+{
+        lprocfs_counter_init(ldlm_stats,
+                             LDLM_ENQUEUE - LDLM_FIRST_OPC,
+                             0, "ldlm_enqueue", "reqs");
+        lprocfs_counter_init(ldlm_stats,
+                             LDLM_CONVERT - LDLM_FIRST_OPC,
+                             0, "ldlm_convert", "reqs");
+        lprocfs_counter_init(ldlm_stats,
+                             LDLM_CANCEL - LDLM_FIRST_OPC,
+                             0, "ldlm_cancel", "reqs");
+        lprocfs_counter_init(ldlm_stats,
+                             LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
+                             0, "ldlm_bl_callback", "reqs");
+        lprocfs_counter_init(ldlm_stats,
+                             LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
+                             0, "ldlm_cp_callback", "reqs");
+        lprocfs_counter_init(ldlm_stats,
+                             LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
+                             0, "ldlm_gl_callback", "reqs");
+}
+
 int lprocfs_exp_rd_nid(char *page, char **start, off_t off, int count,
                          int *eof,  void *data)
 {
-        struct obd_export *exp = (struct obd_export*)data;
+        struct obd_export *exp = data;
         LASSERT(exp != NULL);
         *eof = 1;
         return snprintf(page, count, "%s\n", obd_export_nid2str(exp));
@@ -1337,15 +1689,28 @@ struct exp_uuid_cb_data {
         int                    *len;
 };
 
-void lprocfs_exp_print_uuid(void *obj, void *cb_data)
+static void
+lprocfs_exp_rd_cb_data_init(struct exp_uuid_cb_data *cb_data, char *page,
+                            int count, int *eof, int *len)
 {
-        struct obd_export *exp = (struct obd_export *)obj;
+        cb_data->page = page;
+        cb_data->count = count;
+        cb_data->eof = eof;
+        cb_data->len = len;
+}
+
+int lprocfs_exp_print_uuid(cfs_hash_t *hs, cfs_hash_bd_t *bd,
+                           cfs_hlist_node_t *hnode, void *cb_data)
+
+{
+        struct obd_export *exp = cfs_hash_object(hs, hnode);
         struct exp_uuid_cb_data *data = (struct exp_uuid_cb_data *)cb_data;
 
         if (exp->exp_nid_stats)
                 *data->len += snprintf((data->page + *data->len),
                                        data->count, "%s\n",
                                        obd_uuid2str(&exp->exp_client_uuid));
+        return 0;
 }
 
 int lprocfs_exp_rd_uuid(char *page, char **start, off_t off, int count,
@@ -1358,15 +1723,45 @@ int lprocfs_exp_rd_uuid(char *page, char **start, off_t off, int count,
 
         *eof = 1;
         page[0] = '\0';
-        LASSERT(obd != NULL);
+        lprocfs_exp_rd_cb_data_init(&cb_data, page, count, eof, &len);
+        cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
+                              lprocfs_exp_print_uuid, &cb_data);
+        return (*cb_data.len);
+}
+
+int lprocfs_exp_print_hash(cfs_hash_t *hs, cfs_hash_bd_t *bd,
+                           cfs_hlist_node_t *hnode, void *cb_data)
+
+{
+        struct exp_uuid_cb_data *data = cb_data;
+        struct obd_export       *exp = cfs_hash_object(hs, hnode);
+
+        if (exp->exp_lock_hash != NULL) {
+                if (!*data->len) {
+                        *data->len += cfs_hash_debug_header(data->page,
+                                                            data->count);
+                }
+                *data->len += cfs_hash_debug_str(hs, data->page + *data->len,
+                                                 data->count);
+        }
+
+        return 0;
+}
+
+int lprocfs_exp_rd_hash(char *page, char **start, off_t off, int count,
+                        int *eof,  void *data)
+{
+        struct nid_stat *stats = (struct nid_stat *)data;
+        struct exp_uuid_cb_data cb_data;
+        struct obd_device *obd = stats->nid_obd;
+        int len = 0;
 
-        cb_data.page = page;
-        cb_data.count = count;
-        cb_data.eof = eof;
-        cb_data.len = &len;
-        lustre_hash_bucket_iterate(obd->obd_nid_hash_body,
-                                   &stats->nid, lprocfs_exp_print_uuid,
-                                   &cb_data);
+        *eof = 1;
+        page[0] = '\0';
+        lprocfs_exp_rd_cb_data_init(&cb_data, page, count, eof, &len);
+
+        cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
+                              lprocfs_exp_print_hash, &cb_data);
         return (*cb_data.len);
 }
 
@@ -1380,23 +1775,19 @@ int lprocfs_nid_stats_clear_read(char *page, char **start, off_t off,
 }
 EXPORT_SYMBOL(lprocfs_nid_stats_clear_read);
 
-void lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
+int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
 {
         struct nid_stat *stat = obj;
         int i;
+        ENTRY;
 
-        /* object has only hash + iterate_all references.
-         * add/delete blocked by hash bucket lock */
-        CDEBUG(D_INFO,"refcnt %d\n", stat->nid_exp_ref_count);
-        if(stat->nid_exp_ref_count == 2) {
-                hlist_del_init(&stat->nid_hash);
-                stat->nid_exp_ref_count--;
-                spin_lock(&stat->nid_obd->obd_nid_lock);
-                list_del_init(&stat->nid_list);
-                spin_unlock(&stat->nid_obd->obd_nid_lock);
-                list_add(&stat->nid_list, data);
-                EXIT;
-                return;
+        CDEBUG(D_INFO,"refcnt %d\n", cfs_atomic_read(&stat->nid_exp_ref_count));
+        if (cfs_atomic_read(&stat->nid_exp_ref_count) == 1) {
+                /* object has only hash references. */
+                cfs_spin_lock(&stat->nid_obd->obd_nid_lock);
+                cfs_list_move(&stat->nid_list, data);
+                cfs_spin_unlock(&stat->nid_obd->obd_nid_lock);
+                RETURN(1);
         }
         /* we has reference to object - only clear data*/
         if (stat->nid_stats)
@@ -1406,23 +1797,23 @@ void lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
                 for (i = 0; i < BRW_LAST; i++)
                         lprocfs_oh_clear(&stat->nid_brw_stats->hist[i]);
         }
-        EXIT;
-        return;
+        RETURN(0);
 }
 
 int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
-                                         unsigned long count, void *data)
+                                  unsigned long count, void *data)
 {
         struct obd_device *obd = (struct obd_device *)data;
         struct nid_stat *client_stat;
         CFS_LIST_HEAD(free_list);
 
-        lustre_hash_iterate_all(obd->obd_nid_stats_hash_body,
-                                lprocfs_nid_stats_clear_write_cb, &free_list);
+        cfs_hash_cond_del(obd->obd_nid_stats_hash,
+                          lprocfs_nid_stats_clear_write_cb, &free_list);
 
-        while (!list_empty(&free_list)) {
-                client_stat = list_entry(free_list.next, struct nid_stat, nid_list);
-                list_del_init(&client_stat->nid_list);
+        while (!cfs_list_empty(&free_list)) {
+                client_stat = cfs_list_entry(free_list.next, struct nid_stat,
+                                             nid_list);
+                cfs_list_del_init(&client_stat->nid_list);
                 lprocfs_free_client_stats(client_stat);
         }
 
@@ -1432,74 +1823,107 @@ EXPORT_SYMBOL(lprocfs_nid_stats_clear_write);
 
 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid, int *newnid)
 {
-        int rc = 0;
-        struct nid_stat *tmp = NULL, *tmp1;
+        struct nid_stat *new_stat, *old_stat;
         struct obd_device *obd = NULL;
+        cfs_proc_dir_entry_t *entry;
+        char *buffer = NULL;
+        int rc = 0;
         ENTRY;
 
         *newnid = 0;
 
         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
-            !exp->exp_obd->obd_nid_stats_hash_body)
+            !exp->exp_obd->obd_nid_stats_hash)
                 RETURN(-EINVAL);
 
-       /* not test against zero because eric say:
-        * You may only test nid against another nid, or LNET_NID_ANY.  Anything else is
-        * nonsense.*/
+        /* not test against zero because eric say:
+         * You may only test nid against another nid, or LNET_NID_ANY.
+         * Anything else is nonsense.*/
         if (!nid || *nid == LNET_NID_ANY)
                 RETURN(0);
 
         obd = exp->exp_obd;
 
-        CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash_body);
+        CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
 
-        OBD_ALLOC(tmp, sizeof(struct nid_stat));
-        if (tmp == NULL)
+        OBD_ALLOC_PTR(new_stat);
+        if (new_stat == NULL)
                 RETURN(-ENOMEM);
 
-        tmp->nid = *nid;
-        tmp->nid_obd = exp->exp_obd;
-        tmp->nid_exp_ref_count = 1; /* need live in hash after destroy export */
-
-       /* protect competitive add to list, not need locking on destroy */
-        spin_lock(&obd->obd_nid_lock);
-        list_add(&tmp->nid_list, &obd->obd_nid_stats);
-        spin_unlock(&obd->obd_nid_lock);
+        new_stat->nid               = *nid;
+        new_stat->nid_obd           = exp->exp_obd;
+        /* we need set default refcount to 1 to balance obd_disconnect */
+        cfs_atomic_set(&new_stat->nid_exp_ref_count, 1);
 
-        tmp1= lustre_hash_findadd_unique(obd->obd_nid_stats_hash_body, nid,
-                                         &tmp->nid_hash);
+        old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
+                                           nid, &new_stat->nid_hash);
         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
-               tmp1, libcfs_nid2str(*nid), tmp->nid_exp_ref_count);
+               old_stat, libcfs_nid2str(*nid),
+               cfs_atomic_read(&new_stat->nid_exp_ref_count));
+
+        /* We need to release old stats because lprocfs_exp_cleanup() hasn't
+         * been and will never be called. */
+        if (exp->exp_nid_stats) {
+                nidstat_putref(exp->exp_nid_stats);
+                exp->exp_nid_stats = NULL;
+        }
 
-        if (tmp1 != tmp) {
-                exp->exp_nid_stats = tmp1;
-                GOTO(destroy_new, rc = 0);
+        /* Return -EALREADY here so that we know that the /proc
+         * entry already has been created */
+        if (old_stat != new_stat) {
+                exp->exp_nid_stats = old_stat;
+                GOTO(destroy_new, rc = -EALREADY);
         }
         /* not found - create */
-        tmp->nid_proc = lprocfs_register(libcfs_nid2str(*nid),
-                                         obd->obd_proc_exports_entry, NULL, NULL);
-        if (!tmp->nid_proc) {
-                CERROR("Error making export directory for"
-                       " nid %s\n", libcfs_nid2str(*nid));
-                lustre_hash_delitem(obd->obd_nid_stats_hash_body, nid,
-                                    &tmp->nid_hash);
+        OBD_ALLOC(buffer, LNET_NIDSTR_SIZE);
+        if (buffer == NULL)
                 GOTO(destroy_new, rc = -ENOMEM);
+
+        memcpy(buffer, libcfs_nid2str(*nid), LNET_NIDSTR_SIZE);
+        new_stat->nid_proc = lprocfs_register(buffer,
+                                              obd->obd_proc_exports_entry,
+                                              NULL, NULL);
+        OBD_FREE(buffer, LNET_NIDSTR_SIZE);
+
+        if (new_stat->nid_proc == NULL) {
+                CERROR("Error making export directory for nid %s\n",
+                       libcfs_nid2str(*nid));
+                GOTO(destroy_new_ns, rc = -ENOMEM);
         }
 
-        rc = lprocfs_add_simple(tmp->nid_proc, "uuid",
-                                lprocfs_exp_rd_uuid, NULL, tmp);
-        if (rc)
-                CWARN("Error adding the uuid file\n");
+        entry = lprocfs_add_simple(new_stat->nid_proc, "uuid",
+                                   lprocfs_exp_rd_uuid, NULL, new_stat, NULL);
+        if (IS_ERR(entry)) {
+                CWARN("Error adding the NID stats file\n");
+                rc = PTR_ERR(entry);
+                GOTO(destroy_new_ns, rc);
+        }
 
-        exp->exp_nid_stats = tmp;
+        entry = lprocfs_add_simple(new_stat->nid_proc, "hash",
+                                   lprocfs_exp_rd_hash, NULL, new_stat, NULL);
+        if (IS_ERR(entry)) {
+                CWARN("Error adding the hash file\n");
+                rc = PTR_ERR(entry);
+                GOTO(destroy_new_ns, rc);
+        }
+
+        exp->exp_nid_stats = new_stat;
         *newnid = 1;
+        /* protect competitive add to list, not need locking on destroy */
+        cfs_spin_lock(&obd->obd_nid_lock);
+        cfs_list_add(&new_stat->nid_list, &obd->obd_nid_stats);
+        cfs_spin_unlock(&obd->obd_nid_lock);
+
         RETURN(rc);
 
+destroy_new_ns:
+        if (new_stat->nid_proc != NULL)
+                lprocfs_remove(&new_stat->nid_proc);
+        cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
+
 destroy_new:
-        spin_lock(&obd->obd_nid_lock);
-        list_del(&tmp->nid_list);
-        spin_unlock(&obd->obd_nid_lock);
-        OBD_FREE(tmp, sizeof(struct nid_stat));
+        nidstat_putref(new_stat);
+        OBD_FREE_PTR(new_stat);
         RETURN(rc);
 }
 
@@ -1507,13 +1931,12 @@ int lprocfs_exp_cleanup(struct obd_export *exp)
 {
         struct nid_stat *stat = exp->exp_nid_stats;
 
-        if(!stat)
+        if(!stat || !exp->exp_obd)
                 RETURN(0);
 
-        stat->nid_exp_ref_count--;
-        CDEBUG(D_INFO, "Put stat %p - %d\n", stat, stat->nid_exp_ref_count);
-
+        nidstat_putref(exp->exp_nid_stats);
         exp->exp_nid_stats = NULL;
+
         return 0;
 }
 
@@ -1531,7 +1954,7 @@ int lprocfs_write_frac_helper(const char *buffer, unsigned long count,
         if (count > (sizeof(kernbuf) - 1))
                 return -EINVAL;
 
-        if (copy_from_user(kernbuf, buffer, count))
+        if (cfs_copy_from_user(kernbuf, buffer, count))
                 return -EFAULT;
 
         kernbuf[count] = '\0';
@@ -1565,7 +1988,8 @@ int lprocfs_write_frac_helper(const char *buffer, unsigned long count,
         return 0;
 }
 
-int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val, int mult)
+int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
+                             int mult)
 {
         long decimal_val, frac_val;
         int prtn;
@@ -1583,24 +2007,26 @@ int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val, int mu
 
                 temp_frac = frac_val * 10;
                 buffer[prtn++] = '.';
-                while (frac_bits < 2 && (temp_frac / mult) < 1 ) { /*only reserved 2bits fraction*/
+                while (frac_bits < 2 && (temp_frac / mult) < 1 ) {
+                        /* only reserved 2 bits fraction */
                         buffer[prtn++] ='0';
                         temp_frac *= 10;
                         frac_bits++;
                 }
                 /*
-                  Need to think these cases :
-                        1. #echo x.00 > /proc/xxx       output result : x
-                        2. #echo x.0x > /proc/xxx       output result : x.0x
-                        3. #echo x.x0 > /proc/xxx       output result : x.x
-                        4. #echo x.xx > /proc/xxx       output result : x.xx
-                        Only reserved 2bits fraction.       
+                 * Need to think these cases :
+                 *      1. #echo x.00 > /proc/xxx       output result : x
+                 *      2. #echo x.0x > /proc/xxx       output result : x.0x
+                 *      3. #echo x.x0 > /proc/xxx       output result : x.x
+                 *      4. #echo x.xx > /proc/xxx       output result : x.xx
+                 *      Only reserved 2 bits fraction.
                  */
                 for (i = 0; i < (5 - prtn); i++)
                         temp_mult *= 10;
 
                 frac_bits = min((int)count - prtn, 3 - frac_bits);
-                prtn += snprintf(buffer + prtn, frac_bits, "%ld", frac_val * temp_mult / mult);
+                prtn += snprintf(buffer + prtn, frac_bits, "%ld",
+                                 frac_val * temp_mult / mult);
 
                 prtn--;
                 while(buffer[prtn] < '1' || buffer[prtn] > '9') {
@@ -1628,10 +2054,10 @@ int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
         __u64 whole, frac = 0, units;
         unsigned frac_d = 1;
 
-        if (count > (sizeof(kernbuf) - 1) )
+        if (count > (sizeof(kernbuf) - 1))
                 return -EINVAL;
 
-        if (copy_from_user(kernbuf, buffer, count))
+        if (cfs_copy_from_user(kernbuf, buffer, count))
                 return -EFAULT;
 
         kernbuf[count] = '\0';
@@ -1673,7 +2099,7 @@ int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
                 units <<= 10;
         }
         /* Specified units override the multiplier */
-        if (units) 
+        if (units)
                 mult = mult < 0 ? -units : units;
 
         frac *= mult;
@@ -1682,18 +2108,22 @@ int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
         return 0;
 }
 
-int lprocfs_seq_create(cfs_proc_dir_entry_t *parent, 
-                       char *name, mode_t mode,
+int lprocfs_seq_create(cfs_proc_dir_entry_t *parent, char *name, mode_t mode,
                        struct file_operations *seq_fops, void *data)
 {
         struct proc_dir_entry *entry;
         ENTRY;
 
+        LPROCFS_WRITE_ENTRY();
         entry = create_proc_entry(name, mode, parent);
+        if (entry) {
+                entry->proc_fops = seq_fops;
+                entry->data = data;
+        }
+        LPROCFS_WRITE_EXIT();
+
         if (entry == NULL)
                 RETURN(-ENOMEM);
-        entry->proc_fops = seq_fops;
-        entry->data = data;
 
         RETURN(0);
 }
@@ -1704,7 +2134,7 @@ __inline__ int lprocfs_obd_seq_create(struct obd_device *dev, char *name,
                                       struct file_operations *seq_fops,
                                       void *data)
 {
-        return (lprocfs_seq_create(dev->obd_proc_entry, name, 
+        return (lprocfs_seq_create(dev->obd_proc_entry, name,
                                    mode, seq_fops, data));
 }
 EXPORT_SYMBOL(lprocfs_obd_seq_create);
@@ -1714,9 +2144,9 @@ void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
         if (value >= OBD_HIST_MAX)
                 value = OBD_HIST_MAX - 1;
 
-        spin_lock(&oh->oh_lock);
+        cfs_spin_lock(&oh->oh_lock);
         oh->oh_buckets[value]++;
-        spin_unlock(&oh->oh_lock);
+        cfs_spin_unlock(&oh->oh_lock);
 }
 EXPORT_SYMBOL(lprocfs_oh_tally);
 
@@ -1744,12 +2174,35 @@ EXPORT_SYMBOL(lprocfs_oh_sum);
 
 void lprocfs_oh_clear(struct obd_histogram *oh)
 {
-        spin_lock(&oh->oh_lock);
+        cfs_spin_lock(&oh->oh_lock);
         memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
-        spin_unlock(&oh->oh_lock);
+        cfs_spin_unlock(&oh->oh_lock);
 }
 EXPORT_SYMBOL(lprocfs_oh_clear);
 
+int lprocfs_obd_rd_hash(char *page, char **start, off_t off,
+                        int count, int *eof, void *data)
+{
+        struct obd_device *obd = data;
+        int c = 0;
+
+        if (obd == NULL)
+                return 0;
+
+        c += cfs_hash_debug_header(page, count);
+        c += cfs_hash_debug_str(obd->obd_uuid_hash, page + c, count - c);
+        c += cfs_hash_debug_str(obd->obd_nid_hash, page + c, count - c);
+        c += cfs_hash_debug_str(obd->obd_nid_stats_hash, page+c, count-c);
+#ifdef HAVE_QUOTA_SUPPORT
+        if (obd->u.obt.obt_qctxt.lqc_lqs_hash)
+                c += cfs_hash_debug_str(obd->u.obt.obt_qctxt.lqc_lqs_hash,
+                                        page + c, count - c);
+#endif
+
+        return c;
+}
+EXPORT_SYMBOL(lprocfs_obd_rd_hash);
+
 int lprocfs_obd_rd_recovery_status(char *page, char **start, off_t off,
                                    int count, int *eof, void *data)
 {
@@ -1800,7 +2253,7 @@ int lprocfs_obd_rd_recovery_status(char *page, char **start, off_t off,
                 if (lprocfs_obd_snprintf(&page, size, &len,
                                          "completed_clients: %d/%d\n",
                                          obd->obd_max_recoverable_clients -
-                                         obd->obd_recoverable_clients,
+                                         obd->obd_stale_clients,
                                          obd->obd_max_recoverable_clients) <= 0)
                         goto out;
                 if (lprocfs_obd_snprintf(&page, size, &len,
@@ -1811,6 +2264,9 @@ int lprocfs_obd_rd_recovery_status(char *page, char **start, off_t off,
                                          "last_transno: "LPD64"\n",
                                          obd->obd_next_recovery_transno - 1)<=0)
                         goto out;
+                if (lprocfs_obd_snprintf(&page, size, &len, "VBR: %s\n",
+                                         obd->obd_version_recov ? "ON" : "OFF")<=0)
+                        goto out;
                 goto fclose;
         }
 
@@ -1828,19 +2284,30 @@ int lprocfs_obd_rd_recovery_status(char *page, char **start, off_t off,
                                  obd->obd_max_recoverable_clients) <= 0)
                 goto out;
         /* Number of clients that have completed recovery */
-        if (lprocfs_obd_snprintf(&page, size, &len,"completed_clients: %d/%d\n",
-                                 obd->obd_max_recoverable_clients -
-                                 obd->obd_recoverable_clients,
-                                 obd->obd_max_recoverable_clients) <= 0)
+        if (lprocfs_obd_snprintf(&page, size, &len,"req_replay_clients: %d\n",
+                                 cfs_atomic_read(&obd->obd_req_replay_clients))
+                <= 0)
+                goto out;
+        if (lprocfs_obd_snprintf(&page, size, &len,"lock_repay_clients: %d\n",
+                                 cfs_atomic_read(&obd->obd_lock_replay_clients))
+                <=0)
                 goto out;
-        if (lprocfs_obd_snprintf(&page, size, &len,"replayed_requests: %d/??\n",
+        if (lprocfs_obd_snprintf(&page, size, &len,"completed_clients: %d\n",
+                                 obd->obd_connected_clients -
+                                 cfs_atomic_read(&obd->obd_lock_replay_clients))
+                <=0)
+                goto out;
+        if (lprocfs_obd_snprintf(&page, size, &len,"evicted_clients: %d\n",
+                                 obd->obd_stale_clients) <= 0)
+                goto out;
+        if (lprocfs_obd_snprintf(&page, size, &len,"replayed_requests: %d\n",
                                  obd->obd_replayed_requests) <= 0)
                 goto out;
         if (lprocfs_obd_snprintf(&page, size, &len, "queued_requests: %d\n",
                                  obd->obd_requests_queued_for_recovery) <= 0)
                 goto out;
 
-        if (lprocfs_obd_snprintf(&page, size, &len, "next_transno: "LPD64"\n", 
+        if (lprocfs_obd_snprintf(&page, size, &len, "next_transno: "LPD64"\n",
                                  obd->obd_next_recovery_transno) <= 0)
                 goto out;
 
@@ -1851,19 +2318,19 @@ out:
 }
 EXPORT_SYMBOL(lprocfs_obd_rd_recovery_status);
 
-int lprocfs_obd_rd_recovery_maxtime(char *page, char **start, off_t off,
-                                    int count, int *eof, void *data)
+int lprocfs_obd_rd_recovery_time_soft(char *page, char **start, off_t off,
+                                      int count, int *eof, void *data)
 {
         struct obd_device *obd = (struct obd_device *)data;
         LASSERT(obd != NULL);
 
-        return snprintf(page, count, "%lu\n", 
-                        obd->obd_recovery_max_time);
+        return snprintf(page, count, "%d\n",
+                        obd->obd_recovery_timeout);
 }
-EXPORT_SYMBOL(lprocfs_obd_rd_recovery_maxtime);
+EXPORT_SYMBOL(lprocfs_obd_rd_recovery_time_soft);
 
-int lprocfs_obd_wr_recovery_maxtime(struct file *file, const char *buffer,
-                                    unsigned long count, void *data)
+int lprocfs_obd_wr_recovery_time_soft(struct file *file, const char *buffer,
+                                      unsigned long count, void *data)
 {
         struct obd_device *obd = (struct obd_device *)data;
         int val, rc;
@@ -1873,10 +2340,89 @@ int lprocfs_obd_wr_recovery_maxtime(struct file *file, const char *buffer,
         if (rc)
                 return rc;
 
-        obd->obd_recovery_max_time = val;
+        obd->obd_recovery_timeout = val;
+        return count;
+}
+EXPORT_SYMBOL(lprocfs_obd_wr_recovery_time_soft);
+
+int lprocfs_obd_rd_recovery_time_hard(char *page, char **start, off_t off,
+                                      int count, int *eof, void *data)
+{
+        struct obd_device *obd = data;
+        LASSERT(obd != NULL);
+
+        return snprintf(page, count, "%lu\n", obd->obd_recovery_time_hard);
+}
+EXPORT_SYMBOL(lprocfs_obd_rd_recovery_time_hard);
+
+int lprocfs_obd_wr_recovery_time_hard(struct file *file, const char *buffer,
+                                      unsigned long count, void *data)
+{
+        struct obd_device *obd = data;
+        int val, rc;
+        LASSERT(obd != NULL);
+
+        rc = lprocfs_write_helper(buffer, count, &val);
+        if (rc)
+                return rc;
+
+        obd->obd_recovery_time_hard = val;
+        return count;
+}
+EXPORT_SYMBOL(lprocfs_obd_wr_recovery_time_hard);
+
+int lprocfs_obd_rd_mntdev(char *page, char **start, off_t off,
+                          int count, int *eof, void *data)
+{
+        struct obd_device *obd = (struct obd_device *)data;
+
+        LASSERT(obd != NULL);
+        LASSERT(obd->u.obt.obt_vfsmnt->mnt_devname);
+        *eof = 1;
+        return snprintf(page, count, "%s\n",
+                        obd->u.obt.obt_vfsmnt->mnt_devname);
+}
+EXPORT_SYMBOL(lprocfs_obd_rd_mntdev);
+
+int lprocfs_obd_rd_max_pages_per_rpc(char *page, char **start, off_t off,
+                                     int count, int *eof, void *data)
+{
+        struct obd_device *dev = data;
+        struct client_obd *cli = &dev->u.cli;
+        int rc;
+
+        client_obd_list_lock(&cli->cl_loi_list_lock);
+        rc = snprintf(page, count, "%d\n", cli->cl_max_pages_per_rpc);
+        client_obd_list_unlock(&cli->cl_loi_list_lock);
+        return rc;
+}
+EXPORT_SYMBOL(lprocfs_obd_rd_max_pages_per_rpc);
+
+int lprocfs_obd_wr_max_pages_per_rpc(struct file *file, const char *buffer,
+                                     unsigned long count, void *data)
+{
+        struct obd_device *dev = data;
+        struct client_obd *cli = &dev->u.cli;
+        struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
+        int val, rc;
+
+        rc = lprocfs_write_helper(buffer, count, &val);
+        if (rc)
+                return rc;
+
+        LPROCFS_CLIMP_CHECK(dev);
+        if (val < 1 || val > ocd->ocd_brw_size >> CFS_PAGE_SHIFT) {
+                LPROCFS_CLIMP_EXIT(dev);
+                return -ERANGE;
+        }
+        client_obd_list_lock(&cli->cl_loi_list_lock);
+        cli->cl_max_pages_per_rpc = val;
+        client_obd_list_unlock(&cli->cl_loi_list_lock);
+
+        LPROCFS_CLIMP_EXIT(dev);
         return count;
 }
-EXPORT_SYMBOL(lprocfs_obd_wr_recovery_maxtime);
+EXPORT_SYMBOL(lprocfs_obd_wr_max_pages_per_rpc);
 
 EXPORT_SYMBOL(lprocfs_register);
 EXPORT_SYMBOL(lprocfs_srch);
@@ -1893,8 +2439,12 @@ EXPORT_SYMBOL(lprocfs_free_stats);
 EXPORT_SYMBOL(lprocfs_clear_stats);
 EXPORT_SYMBOL(lprocfs_register_stats);
 EXPORT_SYMBOL(lprocfs_init_ops_stats);
+EXPORT_SYMBOL(lprocfs_init_mps_stats);
+EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
+EXPORT_SYMBOL(lprocfs_alloc_md_stats);
 EXPORT_SYMBOL(lprocfs_free_obd_stats);
+EXPORT_SYMBOL(lprocfs_free_md_stats);
 EXPORT_SYMBOL(lprocfs_exp_setup);
 EXPORT_SYMBOL(lprocfs_exp_cleanup);
 
@@ -1911,6 +2461,8 @@ EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
 EXPORT_SYMBOL(lprocfs_rd_num_exports);
 EXPORT_SYMBOL(lprocfs_rd_numrefs);
 EXPORT_SYMBOL(lprocfs_at_hist_helper);
+EXPORT_SYMBOL(lprocfs_rd_import);
+EXPORT_SYMBOL(lprocfs_rd_state);
 EXPORT_SYMBOL(lprocfs_rd_timeouts);
 EXPORT_SYMBOL(lprocfs_rd_blksize);
 EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
@@ -1924,4 +2476,5 @@ EXPORT_SYMBOL(lprocfs_write_frac_helper);
 EXPORT_SYMBOL(lprocfs_read_frac_helper);
 EXPORT_SYMBOL(lprocfs_write_u64_helper);
 EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
+EXPORT_SYMBOL(lprocfs_stats_collect);
 #endif /* LPROCFS*/