These changes are the raw update to linux-4.4.6-rt14. Kernel sources
[kvmfornfv.git] / kernel / drivers / staging / lustre / lustre / ptlrpc / lproc_ptlrpc.c
index 9533ab9..afab0de 100644 (file)
@@ -35,7 +35,6 @@
  */
 #define DEBUG_SUBSYSTEM S_CLASS
 
-
 #include "../include/obd_support.h"
 #include "../include/obd.h"
 #include "../include/lprocfs_status.h"
@@ -44,7 +43,6 @@
 #include "../include/obd_class.h"
 #include "ptlrpc_internal.h"
 
-
 static struct ll_rpc_opcode {
        __u32       opcode;
        const char *opname;
@@ -54,7 +52,7 @@ static struct ll_rpc_opcode {
        { OST_SETATTR,      "ost_setattr" },
        { OST_READ,      "ost_read" },
        { OST_WRITE,    "ost_write" },
-       { OST_CREATE ,      "ost_create" },
+       { OST_CREATE      "ost_create" },
        { OST_DESTROY,      "ost_destroy" },
        { OST_GET_INFO,     "ost_get_info" },
        { OST_CONNECT,      "ost_connect" },
@@ -166,6 +164,7 @@ const char *ll_opcode2str(__u32 opcode)
         *      ptlrpc_internal.h needs to be modified.
         */
        __u32 offset = opcode_offset(opcode);
+
        LASSERTF(offset < LUSTRE_MAX_OPCODES,
                 "offset %u >= LUSTRE_MAX_OPCODES %u\n",
                 offset, LUSTRE_MAX_OPCODES);
@@ -181,19 +180,19 @@ static const char *ll_eopcode2str(__u32 opcode)
        return ll_eopcode_table[opcode].opname;
 }
 
-#if defined(CONFIG_PROC_FS)
-static void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
-                                   char *name,
-                                   struct proc_dir_entry **procroot_ret,
-                                   struct lprocfs_stats **stats_ret)
+static void
+ptlrpc_ldebugfs_register(struct dentry *root, char *dir,
+                        char *name,
+                        struct dentry **debugfs_root_ret,
+                        struct lprocfs_stats **stats_ret)
 {
-       struct proc_dir_entry *svc_procroot;
+       struct dentry *svc_debugfs_entry;
        struct lprocfs_stats *svc_stats;
        int i, rc;
        unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
                                          LPROCFS_CNTR_STDDEV;
 
-       LASSERT(*procroot_ret == NULL);
+       LASSERT(*debugfs_root_ret == NULL);
        LASSERT(*stats_ret == NULL);
 
        svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES+LUSTRE_MAX_OPCODES,
@@ -201,14 +200,14 @@ static void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
        if (svc_stats == NULL)
                return;
 
-       if (dir) {
-               svc_procroot = lprocfs_register(dir, root, NULL, NULL);
-               if (IS_ERR(svc_procroot)) {
+       if (dir != NULL) {
+               svc_debugfs_entry = ldebugfs_register(dir, root, NULL, NULL);
+               if (IS_ERR(svc_debugfs_entry)) {
                        lprocfs_free_stats(&svc_stats);
                        return;
                }
        } else {
-               svc_procroot = root;
+               svc_debugfs_entry = root;
        }
 
        lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
@@ -239,19 +238,20 @@ static void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
        }
        for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
                __u32 opcode = ll_rpc_opcode_table[i].opcode;
+
                lprocfs_counter_init(svc_stats,
                                     EXTRA_MAX_OPCODES + i, svc_counter_config,
                                     ll_opcode2str(opcode), "usec");
        }
 
-       rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
+       rc = ldebugfs_register_stats(svc_debugfs_entry, name, svc_stats);
        if (rc < 0) {
-               if (dir)
-                       lprocfs_remove(&svc_procroot);
+               if (dir != NULL)
+                       ldebugfs_remove(&svc_debugfs_entry);
                lprocfs_free_stats(&svc_stats);
        } else {
-               if (dir)
-                       *procroot_ret = svc_procroot;
+               if (dir != NULL)
+                       *debugfs_root_ret = svc_debugfs_entry;
                *stats_ret = svc_stats;
        }
 }
@@ -261,8 +261,8 @@ ptlrpc_lprocfs_req_history_len_seq_show(struct seq_file *m, void *v)
 {
        struct ptlrpc_service *svc = m->private;
        struct ptlrpc_service_part *svcpt;
-       int     total = 0;
-       int     i;
+       int total = 0;
+       int i;
 
        ptlrpc_service_for_each_part(svcpt, i, svc)
                total += svcpt->scp_hist_nrqbds;
@@ -270,6 +270,7 @@ ptlrpc_lprocfs_req_history_len_seq_show(struct seq_file *m, void *v)
        seq_printf(m, "%d\n", total);
        return 0;
 }
+
 LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_req_history_len);
 
 static int
@@ -277,8 +278,8 @@ ptlrpc_lprocfs_req_history_max_seq_show(struct seq_file *m, void *n)
 {
        struct ptlrpc_service *svc = m->private;
        struct ptlrpc_service_part *svcpt;
-       int     total = 0;
-       int     i;
+       int total = 0;
+       int i;
 
        ptlrpc_service_for_each_part(svcpt, i, svc)
                total += svc->srv_hist_nrqbds_cpt_max;
@@ -289,13 +290,13 @@ ptlrpc_lprocfs_req_history_max_seq_show(struct seq_file *m, void *n)
 
 static ssize_t
 ptlrpc_lprocfs_req_history_max_seq_write(struct file *file,
-                                       const char __user *buffer,
-                                       size_t count, loff_t *off)
+                                        const char __user *buffer,
+                                        size_t count, loff_t *off)
 {
        struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
-       int                         bufpages;
-       int                         val;
-       int                         rc;
+       int bufpages;
+       int val;
+       int rc;
 
        rc = lprocfs_write_helper(buffer, count, &val);
        if (rc < 0)
@@ -322,25 +323,25 @@ ptlrpc_lprocfs_req_history_max_seq_write(struct file *file,
 
        return count;
 }
+
 LPROC_SEQ_FOPS(ptlrpc_lprocfs_req_history_max);
 
-static int
-ptlrpc_lprocfs_threads_min_seq_show(struct seq_file *m, void *n)
+static ssize_t threads_min_show(struct kobject *kobj, struct attribute *attr,
+                               char *buf)
 {
-       struct ptlrpc_service *svc = m->private;
+       struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
+                                                 srv_kobj);
 
-       seq_printf(m, "%d\n", svc->srv_nthrs_cpt_init * svc->srv_ncpts);
-       return 0;
+       return sprintf(buf, "%d\n", svc->srv_nthrs_cpt_init * svc->srv_ncpts);
 }
 
-static ssize_t
-ptlrpc_lprocfs_threads_min_seq_write(struct file *file,
-                                       const char __user *buffer,
-                                       size_t count, loff_t *off)
+static ssize_t threads_min_store(struct kobject *kobj, struct attribute *attr,
+                                const char *buffer, size_t count)
 {
-       struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
-       int     val;
-       int     rc = lprocfs_write_helper(buffer, count, &val);
+       struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
+                                                 srv_kobj);
+       unsigned long val;
+       int rc = kstrtoul(buffer, 10, &val);
 
        if (rc < 0)
                return rc;
@@ -360,41 +361,41 @@ ptlrpc_lprocfs_threads_min_seq_write(struct file *file,
 
        return count;
 }
-LPROC_SEQ_FOPS(ptlrpc_lprocfs_threads_min);
+LUSTRE_RW_ATTR(threads_min);
 
-static int
-ptlrpc_lprocfs_threads_started_seq_show(struct seq_file *m, void *n)
+static ssize_t threads_started_show(struct kobject *kobj,
+                                   struct attribute *attr,
+                                   char *buf)
 {
-       struct ptlrpc_service *svc = m->private;
+       struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
+                                                 srv_kobj);
        struct ptlrpc_service_part *svcpt;
-       int     total = 0;
-       int     i;
+       int total = 0;
+       int i;
 
        ptlrpc_service_for_each_part(svcpt, i, svc)
                total += svcpt->scp_nthrs_running;
 
-       seq_printf(m, "%d\n", total);
-       return 0;
+       return sprintf(buf, "%d\n", total);
 }
-LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_threads_started);
+LUSTRE_RO_ATTR(threads_started);
 
-static int
-ptlrpc_lprocfs_threads_max_seq_show(struct seq_file *m, void *n)
+static ssize_t threads_max_show(struct kobject *kobj, struct attribute *attr,
+                               char *buf)
 {
-       struct ptlrpc_service *svc = m->private;
+       struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
+                                                 srv_kobj);
 
-       seq_printf(m, "%d\n", svc->srv_nthrs_cpt_limit * svc->srv_ncpts);
-       return 0;
+       return sprintf(buf, "%d\n", svc->srv_nthrs_cpt_limit * svc->srv_ncpts);
 }
 
-static ssize_t
-ptlrpc_lprocfs_threads_max_seq_write(struct file *file,
-                               const char __user *buffer,
-                               size_t count, loff_t *off)
+static ssize_t threads_max_store(struct kobject *kobj, struct attribute *attr,
+                                const char *buffer, size_t count)
 {
-       struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
-       int     val;
-       int     rc = lprocfs_write_helper(buffer, count, &val);
+       struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
+                                                 srv_kobj);
+       unsigned long val;
+       int rc = kstrtoul(buffer, 10, &val);
 
        if (rc < 0)
                return rc;
@@ -414,13 +415,12 @@ ptlrpc_lprocfs_threads_max_seq_write(struct file *file,
 
        return count;
 }
-LPROC_SEQ_FOPS(ptlrpc_lprocfs_threads_max);
+LUSTRE_RW_ATTR(threads_max);
 
 /**
  * \addtogoup nrs
  * @{
  */
-extern struct nrs_core nrs_core;
 
 /**
  * Translates \e ptlrpc_nrs_pol_state values to human-readable strings.
@@ -453,7 +453,7 @@ static const char *nrs_state2str(enum ptlrpc_nrs_pol_state state)
  * \param[in] policy The policy
  * \param[out] info  Holds returned status information
  */
-void nrs_policy_get_info_locked(struct ptlrpc_nrs_policy *policy,
+static void nrs_policy_get_info_locked(struct ptlrpc_nrs_policy *policy,
                                struct ptlrpc_nrs_pol_info *info)
 {
        LASSERT(policy != NULL);
@@ -478,17 +478,17 @@ void nrs_policy_get_info_locked(struct ptlrpc_nrs_policy *policy,
  */
 static int ptlrpc_lprocfs_nrs_seq_show(struct seq_file *m, void *n)
 {
-       struct ptlrpc_service          *svc = m->private;
-       struct ptlrpc_service_part     *svcpt;
-       struct ptlrpc_nrs              *nrs;
-       struct ptlrpc_nrs_policy       *policy;
-       struct ptlrpc_nrs_pol_info     *infos;
-       struct ptlrpc_nrs_pol_info      tmp;
-       unsigned                        num_pols;
-       unsigned                        pol_idx = 0;
-       bool                            hp = false;
-       int                             i;
-       int                             rc = 0;
+       struct ptlrpc_service *svc = m->private;
+       struct ptlrpc_service_part *svcpt;
+       struct ptlrpc_nrs *nrs;
+       struct ptlrpc_nrs_policy *policy;
+       struct ptlrpc_nrs_pol_info *infos;
+       struct ptlrpc_nrs_pol_info tmp;
+       unsigned num_pols;
+       unsigned pol_idx = 0;
+       bool hp = false;
+       int i;
+       int rc = 0;
 
        /**
         * Serialize NRS core lprocfs operations with policy registration/
@@ -507,10 +507,10 @@ static int ptlrpc_lprocfs_nrs_seq_show(struct seq_file *m, void *n)
        num_pols = svc->srv_parts[0]->scp_nrs_reg.nrs_num_pols;
        spin_unlock(&nrs->nrs_lock);
 
-       OBD_ALLOC(infos, num_pols * sizeof(*infos));
+       infos = kcalloc(num_pols, sizeof(*infos), GFP_NOFS);
        if (infos == NULL) {
                rc = -ENOMEM;
-               goto out;
+               goto unlock;
        }
 again:
 
@@ -617,10 +617,8 @@ again:
                goto again;
        }
 
-out:
-       if (infos)
-               OBD_FREE(infos, num_pols * sizeof(*infos));
-
+       kfree(infos);
+unlock:
        mutex_unlock(&nrs_core.nrs_mutex);
 
        return rc;
@@ -640,26 +638,22 @@ out:
  * regular and high-priority (if the service has one) NRS head.
  */
 static ssize_t ptlrpc_lprocfs_nrs_seq_write(struct file *file,
-                                       const char __user *buffer,
-                                       size_t count, loff_t *off)
+                                           const char __user *buffer,
+                                           size_t count, loff_t *off)
 {
        struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
-       enum ptlrpc_nrs_queue_type      queue = PTLRPC_NRS_QUEUE_BOTH;
-       char                           *cmd;
-       char                           *cmd_copy = NULL;
-       char                           *token;
-       int                             rc = 0;
+       enum ptlrpc_nrs_queue_type queue = PTLRPC_NRS_QUEUE_BOTH;
+       char *cmd;
+       char *cmd_copy = NULL;
+       char *token;
+       int rc = 0;
 
-       if (count >= LPROCFS_NRS_WR_MAX_CMD) {
-               rc = -EINVAL;
-               goto out;
-       }
+       if (count >= LPROCFS_NRS_WR_MAX_CMD)
+               return -EINVAL;
 
-       OBD_ALLOC(cmd, LPROCFS_NRS_WR_MAX_CMD);
-       if (cmd == NULL) {
-               rc = -ENOMEM;
-               goto out;
-       }
+       cmd = kzalloc(LPROCFS_NRS_WR_MAX_CMD, GFP_NOFS);
+       if (!cmd)
+               return -ENOMEM;
        /**
         * strsep() modifies its argument, so keep a copy
         */
@@ -716,11 +710,11 @@ default_queue:
 
        mutex_unlock(&nrs_core.nrs_mutex);
 out:
-       if (cmd_copy)
-               OBD_FREE(cmd_copy, LPROCFS_NRS_WR_MAX_CMD);
+       kfree(cmd_copy);
 
        return rc < 0 ? rc : count;
 }
+
 LPROC_SEQ_FOPS(ptlrpc_lprocfs_nrs);
 
 /** @} nrs */
@@ -736,8 +730,8 @@ ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service_part *svcpt,
                                    struct ptlrpc_srh_iterator *srhi,
                                    __u64 seq)
 {
-       struct list_head                *e;
-       struct ptlrpc_request   *req;
+       struct list_head *e;
+       struct ptlrpc_request *req;
 
        if (srhi->srhi_req != NULL &&
            srhi->srhi_seq > svcpt->scp_hist_seq_culled &&
@@ -825,8 +819,8 @@ ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
                return NULL;
        }
 
-       OBD_ALLOC(srhi, sizeof(*srhi));
-       if (srhi == NULL)
+       srhi = kzalloc(sizeof(*srhi), GFP_NOFS);
+       if (!srhi)
                return NULL;
 
        srhi->srhi_seq = 0;
@@ -851,7 +845,7 @@ ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
                }
        }
 
-       OBD_FREE(srhi, sizeof(*srhi));
+       kfree(srhi);
        return NULL;
 }
 
@@ -860,20 +854,19 @@ ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
 {
        struct ptlrpc_srh_iterator *srhi = iter;
 
-       if (srhi != NULL)
-               OBD_FREE(srhi, sizeof(*srhi));
+       kfree(srhi);
 }
 
 static void *
 ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
                                    void *iter, loff_t *pos)
 {
-       struct ptlrpc_service           *svc = s->private;
-       struct ptlrpc_srh_iterator      *srhi = iter;
-       struct ptlrpc_service_part      *svcpt;
-       __u64                           seq;
-       int                             rc;
-       int                             i;
+       struct ptlrpc_service *svc = s->private;
+       struct ptlrpc_srh_iterator *srhi = iter;
+       struct ptlrpc_service_part *svcpt;
+       __u64 seq;
+       int rc;
+       int i;
 
        for (i = srhi->srhi_idx; i < svc->srv_ncpts; i++) {
                svcpt = svc->srv_parts[i];
@@ -895,47 +888,17 @@ ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
                }
        }
 
-       OBD_FREE(srhi, sizeof(*srhi));
+       kfree(srhi);
        return NULL;
 }
 
-/* common ost/mdt so_req_printer */
-void target_print_req(void *seq_file, struct ptlrpc_request *req)
-{
-       /* Called holding srv_lock with irqs disabled.
-        * Print specific req contents and a newline.
-        * CAVEAT EMPTOR: check request message length before printing!!!
-        * You might have received any old crap so you must be just as
-        * careful here as the service's request parser!!! */
-       struct seq_file *sf = seq_file;
-
-       switch (req->rq_phase) {
-       case RQ_PHASE_NEW:
-               /* still awaiting a service thread's attention, or rejected
-                * because the generic request message didn't unpack */
-               seq_printf(sf, "<not swabbed>\n");
-               break;
-       case RQ_PHASE_INTERPRET:
-               /* being handled, so basic msg swabbed, and opc is valid
-                * but racing with mds_handle() */
-       case RQ_PHASE_COMPLETE:
-               /* been handled by mds_handle() reply state possibly still
-                * volatile */
-               seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
-               break;
-       default:
-               DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
-       }
-}
-EXPORT_SYMBOL(target_print_req);
-
 static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
 {
-       struct ptlrpc_service           *svc = s->private;
-       struct ptlrpc_srh_iterator      *srhi = iter;
-       struct ptlrpc_service_part      *svcpt;
-       struct ptlrpc_request           *req;
-       int                             rc;
+       struct ptlrpc_service *svc = s->private;
+       struct ptlrpc_srh_iterator *srhi = iter;
+       struct ptlrpc_service_part *svcpt;
+       struct ptlrpc_request *req;
+       int rc;
 
        LASSERT(srhi->srhi_idx < svc->srv_ncpts);
 
@@ -946,23 +909,26 @@ static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
        rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, srhi->srhi_seq);
 
        if (rc == 0) {
+               char nidstr[LNET_NIDSTR_SIZE];
+
                req = srhi->srhi_req;
 
+               libcfs_nid2str_r(req->rq_self, nidstr, sizeof(nidstr));
                /* Print common req fields.
                 * CAVEAT EMPTOR: we're racing with the service handler
                 * here.  The request could contain any old crap, so you
                 * must be just as careful as the service's request
                 * parser. Currently I only print stuff here I know is OK
                 * to look at coz it was set up in request_in_callback()!!! */
-               seq_printf(s, "%lld:%s:%s:x%llu:%d:%s:%ld:%lds(%+lds) ",
-                          req->rq_history_seq, libcfs_nid2str(req->rq_self),
+               seq_printf(s, "%lld:%s:%s:x%llu:%d:%s:%lld:%lds(%+lds) ",
+                          req->rq_history_seq, nidstr,
                           libcfs_id2str(req->rq_peer), req->rq_xid,
                           req->rq_reqlen, ptlrpc_rqphase2str(req),
-                          req->rq_arrival_time.tv_sec,
-                          req->rq_sent - req->rq_arrival_time.tv_sec,
-                          req->rq_sent - req->rq_deadline);
+                          (s64)req->rq_arrival_time.tv_sec,
+                          (long)(req->rq_sent - req->rq_arrival_time.tv_sec),
+                          (long)(req->rq_sent - req->rq_deadline));
                if (svc->srv_ops.so_req_printer == NULL)
-                       seq_printf(s, "\n");
+                       seq_putc(s, '\n');
                else
                        svc->srv_ops.so_req_printer(s, srhi->srhi_req);
        }
@@ -980,28 +946,28 @@ ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
                .next  = ptlrpc_lprocfs_svc_req_history_next,
                .show  = ptlrpc_lprocfs_svc_req_history_show,
        };
-       struct seq_file       *seqf;
-       int                 rc;
+       struct seq_file *seqf;
+       int rc;
 
        rc = seq_open(file, &sops);
        if (rc)
                return rc;
 
        seqf = file->private_data;
-       seqf->private = PDE_DATA(inode);
+       seqf->private = inode->i_private;
        return 0;
 }
 
 /* See also lprocfs_rd_timeouts */
 static int ptlrpc_lprocfs_timeouts_seq_show(struct seq_file *m, void *n)
 {
-       struct ptlrpc_service           *svc = m->private;
-       struct ptlrpc_service_part      *svcpt;
-       struct dhms                     ts;
-       time_t                          worstt;
-       unsigned int                    cur;
-       unsigned int                    worst;
-       int                             i;
+       struct ptlrpc_service *svc = m->private;
+       struct ptlrpc_service_part *svcpt;
+       struct dhms ts;
+       time64_t worstt;
+       unsigned int cur;
+       unsigned int worst;
+       int i;
 
        if (AT_OFF) {
                seq_printf(m, "adaptive timeouts off, using obd_timeout %u\n",
@@ -1013,36 +979,40 @@ static int ptlrpc_lprocfs_timeouts_seq_show(struct seq_file *m, void *n)
                cur     = at_get(&svcpt->scp_at_estimate);
                worst   = svcpt->scp_at_estimate.at_worst_ever;
                worstt  = svcpt->scp_at_estimate.at_worst_time;
-               s2dhms(&ts, get_seconds() - worstt);
+               s2dhms(&ts, ktime_get_real_seconds() - worstt);
 
-               seq_printf(m, "%10s : cur %3u  worst %3u (at %ld, "
+               seq_printf(m, "%10s : cur %3u  worst %3u (at %lld, "
                              DHMS_FMT" ago) ", "service",
-                             cur, worst, worstt, DHMS_VARS(&ts));
+                             cur, worst, (s64)worstt, DHMS_VARS(&ts));
 
                lprocfs_at_hist_helper(m, &svcpt->scp_at_estimate);
        }
 
        return 0;
 }
+
 LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_timeouts);
 
-static int ptlrpc_lprocfs_hp_ratio_seq_show(struct seq_file *m, void *v)
+static ssize_t high_priority_ratio_show(struct kobject *kobj,
+                                       struct attribute *attr,
+                                       char *buf)
 {
-       struct ptlrpc_service *svc = m->private;
-       seq_printf(m, "%d", svc->srv_hpreq_ratio);
-       return 0;
+       struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
+                                                 srv_kobj);
+       return sprintf(buf, "%d\n", svc->srv_hpreq_ratio);
 }
 
-static ssize_t ptlrpc_lprocfs_hp_ratio_seq_write(struct file *file,
-                                            const char __user *buffer,
-                                            size_t count,
-                                            loff_t *off)
+static ssize_t high_priority_ratio_store(struct kobject *kobj,
+                                        struct attribute *attr,
+                                        const char *buffer,
+                                        size_t count)
 {
-       struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
-       int     rc;
-       int     val;
+       struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
+                                                 srv_kobj);
+       int rc;
+       int val;
 
-       rc = lprocfs_write_helper(buffer, count, &val);
+       rc = kstrtoint(buffer, 10, &val);
        if (rc < 0)
                return rc;
 
@@ -1055,30 +1025,62 @@ static ssize_t ptlrpc_lprocfs_hp_ratio_seq_write(struct file *file,
 
        return count;
 }
-LPROC_SEQ_FOPS(ptlrpc_lprocfs_hp_ratio);
+LUSTRE_RW_ATTR(high_priority_ratio);
+
+static struct attribute *ptlrpc_svc_attrs[] = {
+       &lustre_attr_threads_min.attr,
+       &lustre_attr_threads_started.attr,
+       &lustre_attr_threads_max.attr,
+       &lustre_attr_high_priority_ratio.attr,
+       NULL,
+};
+
+static void ptlrpc_sysfs_svc_release(struct kobject *kobj)
+{
+       struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
+                                                 srv_kobj);
+
+       complete(&svc->srv_kobj_unregister);
+}
+
+static struct kobj_type ptlrpc_svc_ktype = {
+       .default_attrs  = ptlrpc_svc_attrs,
+       .sysfs_ops      = &lustre_sysfs_ops,
+       .release        = ptlrpc_sysfs_svc_release,
+};
 
-void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
-                                    struct ptlrpc_service *svc)
+void ptlrpc_sysfs_unregister_service(struct ptlrpc_service *svc)
+{
+       /* Let's see if we had a chance at initialization first */
+       if (svc->srv_kobj.kset) {
+               kobject_put(&svc->srv_kobj);
+               wait_for_completion(&svc->srv_kobj_unregister);
+       }
+}
+
+int ptlrpc_sysfs_register_service(struct kset *parent,
+                                 struct ptlrpc_service *svc)
+{
+       int rc;
+
+       svc->srv_kobj.kset = parent;
+       init_completion(&svc->srv_kobj_unregister);
+       rc = kobject_init_and_add(&svc->srv_kobj, &ptlrpc_svc_ktype, NULL,
+                                 "%s", svc->srv_name);
+
+       return rc;
+}
+
+void ptlrpc_ldebugfs_register_service(struct dentry *entry,
+                                     struct ptlrpc_service *svc)
 {
        struct lprocfs_vars lproc_vars[] = {
-               {.name       = "high_priority_ratio",
-                .fops       = &ptlrpc_lprocfs_hp_ratio_fops,
-                .data       = svc},
                {.name       = "req_buffer_history_len",
                 .fops       = &ptlrpc_lprocfs_req_history_len_fops,
                 .data       = svc},
                {.name       = "req_buffer_history_max",
                 .fops       = &ptlrpc_lprocfs_req_history_max_fops,
                 .data       = svc},
-               {.name       = "threads_min",
-                .fops       = &ptlrpc_lprocfs_threads_min_fops,
-                .data       = svc},
-               {.name       = "threads_max",
-                .fops       = &ptlrpc_lprocfs_threads_max_fops,
-                .data       = svc},
-               {.name       = "threads_started",
-                .fops       = &ptlrpc_lprocfs_threads_started_fops,
-                .data       = svc},
                {.name       = "timeouts",
                 .fops       = &ptlrpc_lprocfs_timeouts_fops,
                 .data       = svc},
@@ -1097,26 +1099,26 @@ void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
 
        int rc;
 
-       ptlrpc_lprocfs_register(entry, svc->srv_name,
-                               "stats", &svc->srv_procroot,
-                               &svc->srv_stats);
+       ptlrpc_ldebugfs_register(entry, svc->srv_name,
+                                "stats", &svc->srv_debugfs_entry,
+                                &svc->srv_stats);
 
-       if (svc->srv_procroot == NULL)
+       if (svc->srv_debugfs_entry == NULL)
                return;
 
-       lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
+       ldebugfs_add_vars(svc->srv_debugfs_entry, lproc_vars, NULL);
 
-       rc = lprocfs_seq_create(svc->srv_procroot, "req_history",
-                               0400, &req_history_fops, svc);
+       rc = ldebugfs_seq_create(svc->srv_debugfs_entry, "req_history",
+                                0400, &req_history_fops, svc);
        if (rc)
                CWARN("Error adding the req_history file\n");
 }
 
 void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
 {
-       ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
-                               &obddev->obd_svc_procroot,
-                               &obddev->obd_svc_stats);
+       ptlrpc_ldebugfs_register(obddev->obd_debugfs_entry, NULL, "stats",
+                                &obddev->obd_svc_debugfs_entry,
+                                &obddev->obd_svc_stats);
 }
 EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
 
@@ -1164,8 +1166,8 @@ EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
 
 void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
 {
-       if (svc->srv_procroot != NULL)
-               lprocfs_remove(&svc->srv_procroot);
+       if (svc->srv_debugfs_entry != NULL)
+               ldebugfs_remove(&svc->srv_debugfs_entry);
 
        if (svc->srv_stats)
                lprocfs_free_stats(&svc->srv_stats);
@@ -1173,63 +1175,14 @@ void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
 
 void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
 {
-       if (obd->obd_svc_procroot)
-               lprocfs_remove(&obd->obd_svc_procroot);
+       if (!IS_ERR_OR_NULL(obd->obd_svc_debugfs_entry))
+               ldebugfs_remove(&obd->obd_svc_debugfs_entry);
 
        if (obd->obd_svc_stats)
                lprocfs_free_stats(&obd->obd_svc_stats);
 }
 EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
 
-
-#define BUFLEN (UUID_MAX + 5)
-
-int lprocfs_wr_evict_client(struct file *file, const char __user *buffer,
-                           size_t count, loff_t *off)
-{
-       struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
-       char          *kbuf;
-       char          *tmpbuf;
-
-       OBD_ALLOC(kbuf, BUFLEN);
-       if (kbuf == NULL)
-               return -ENOMEM;
-
-       /*
-        * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
-        * bytes into kbuf, to ensure that the string is NUL-terminated.
-        * UUID_MAX should include a trailing NUL already.
-        */
-       if (copy_from_user(kbuf, buffer,
-                              min_t(unsigned long, BUFLEN - 1, count))) {
-               count = -EFAULT;
-               goto out;
-       }
-       tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
-       /* Kludge code(deadlock situation): the lprocfs lock has been held
-        * since the client is evicted by writing client's
-        * uuid/nid to procfs "evict_client" entry. However,
-        * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
-        * the proc entries under the being destroyed export{}, so I have
-        * to drop the lock at first here.
-        * - jay, jxiong@clusterfs.com */
-       class_incref(obd, __func__, current);
-
-       if (strncmp(tmpbuf, "nid:", 4) == 0)
-               obd_export_evict_by_nid(obd, tmpbuf + 4);
-       else if (strncmp(tmpbuf, "uuid:", 5) == 0)
-               obd_export_evict_by_uuid(obd, tmpbuf + 5);
-       else
-               obd_export_evict_by_uuid(obd, tmpbuf);
-
-       class_decref(obd, __func__, current);
-
-out:
-       OBD_FREE(kbuf, BUFLEN);
-       return count;
-}
-EXPORT_SYMBOL(lprocfs_wr_evict_client);
-
 #undef BUFLEN
 
 int lprocfs_wr_ping(struct file *file, const char __user *buffer,
@@ -1237,9 +1190,12 @@ int lprocfs_wr_ping(struct file *file, const char __user *buffer,
 {
        struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
        struct ptlrpc_request *req;
-       int                 rc;
+       int rc;
+
+       rc = lprocfs_climp_check(obd);
+       if (rc)
+               return rc;
 
-       LPROCFS_CLIMP_CHECK(obd);
        req = ptlrpc_prep_ping(obd->u.cli.cl_import);
        LPROCFS_CLIMP_EXIT(obd);
        if (req == NULL)
@@ -1275,8 +1231,8 @@ int lprocfs_wr_import(struct file *file, const char __user *buffer,
        if (count > PAGE_CACHE_SIZE - 1 || count <= prefix_len)
                return -EINVAL;
 
-       OBD_ALLOC(kbuf, count + 1);
-       if (kbuf == NULL)
+       kbuf = kzalloc(count + 1, GFP_NOFS);
+       if (!kbuf)
                return -ENOMEM;
 
        if (copy_from_user(kbuf, buffer, count)) {
@@ -1301,7 +1257,7 @@ int lprocfs_wr_import(struct file *file, const char __user *buffer,
                *ptr = 0;
                do_reconn = 0;
                ptr += strlen("::");
-               inst = simple_strtol(ptr, &endptr, 10);
+               inst = simple_strtoul(ptr, &endptr, 10);
                if (*endptr) {
                        CERROR("config: wrong instance # %s\n", ptr);
                } else if (inst != imp->imp_connect_data.ocd_instance) {
@@ -1319,7 +1275,7 @@ int lprocfs_wr_import(struct file *file, const char __user *buffer,
                ptlrpc_recover_import(imp, uuid, 1);
 
 out:
-       OBD_FREE(kbuf, count + 1);
+       kfree(kbuf);
        return count;
 }
 EXPORT_SYMBOL(lprocfs_wr_import);
@@ -1328,8 +1284,12 @@ int lprocfs_rd_pinger_recov(struct seq_file *m, void *n)
 {
        struct obd_device *obd = m->private;
        struct obd_import *imp = obd->u.cli.cl_import;
+       int rc;
+
+       rc = lprocfs_climp_check(obd);
+       if (rc)
+               return rc;
 
-       LPROCFS_CLIMP_CHECK(obd);
        seq_printf(m, "%d\n", !imp->imp_no_pinger_recover);
        LPROCFS_CLIMP_EXIT(obd);
 
@@ -1352,7 +1312,10 @@ int lprocfs_wr_pinger_recov(struct file *file, const char __user *buffer,
        if (val != 0 && val != 1)
                return -ERANGE;
 
-       LPROCFS_CLIMP_CHECK(obd);
+       rc = lprocfs_climp_check(obd);
+       if (rc)
+               return rc;
+
        spin_lock(&imp->imp_lock);
        imp->imp_no_pinger_recover = !val;
        spin_unlock(&imp->imp_lock);
@@ -1362,5 +1325,3 @@ int lprocfs_wr_pinger_recov(struct file *file, const char __user *buffer,
 
 }
 EXPORT_SYMBOL(lprocfs_wr_pinger_recov);
-
-#endif /* CONFIG_PROC_FS */