1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/lprocfs_status.c
38 * Author: Hariharan Thantry <thantry@users.sourceforge.net>
42 # define EXPORT_SYMTAB
44 #define DEBUG_SUBSYSTEM S_CLASS
47 # include <liblustre.h>
50 #include <obd_class.h>
51 #include <lprocfs_status.h>
52 #include <lustre_fsfilt.h>
56 #define MAX_STRING_SIZE 128
58 /* for bug 10866, global variable */
59 DECLARE_RWSEM(_lprocfs_lock);
60 EXPORT_SYMBOL(_lprocfs_lock);
62 int lprocfs_seq_release(struct inode *inode, struct file *file)
65 return seq_release(inode, file);
67 EXPORT_SYMBOL(lprocfs_seq_release);
69 struct proc_dir_entry *lprocfs_srch(struct proc_dir_entry *head,
72 struct proc_dir_entry *temp;
79 while (temp != NULL) {
80 if (strcmp(temp->name, name) == 0) {
91 /* lprocfs API calls */
93 /* Function that emulates snprintf but also has the side effect of advancing
94 the page pointer for the next write into the buffer, incrementing the total
95 length written to the buffer, and decrementing the size left in the
97 static int lprocfs_obd_snprintf(char **page, int end, int *len,
98 const char *format, ...)
106 va_start(list, format);
107 n = vsnprintf(*page, end - *len, format, list);
110 *page += n; *len += n;
114 cfs_proc_dir_entry_t *lprocfs_add_simple(struct proc_dir_entry *root,
116 read_proc_t *read_proc,
117 write_proc_t *write_proc,
119 struct file_operations *fops)
121 cfs_proc_dir_entry_t *proc;
124 if (root == NULL || name == NULL)
125 return ERR_PTR(-EINVAL);
132 proc = create_proc_entry(name, mode, root);
134 CERROR("LprocFS: No memory to create /proc entry %s", name);
135 return ERR_PTR(-ENOMEM);
137 proc->read_proc = read_proc;
138 proc->write_proc = write_proc;
141 proc->proc_fops = fops;
145 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
146 struct proc_dir_entry *parent, const char *dest)
148 struct proc_dir_entry *entry;
150 if (parent == NULL || dest == NULL)
153 entry = proc_symlink(name, parent, dest);
155 CERROR("LprocFS: Could not create symbolic link from %s to %s",
160 static ssize_t lprocfs_fops_read(struct file *f, char __user *buf,
161 size_t size, loff_t *ppos)
163 struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
164 char *page, *start = NULL;
165 int rc = 0, eof = 1, count;
167 if (*ppos >= CFS_PAGE_SIZE)
170 page = (char *)__get_free_page(GFP_KERNEL);
175 OBD_FAIL_TIMEOUT(OBD_FAIL_LPROC_REMOVE, 10);
176 if (!dp->deleted && dp->read_proc)
177 rc = dp->read_proc(page, &start, *ppos, CFS_PAGE_SIZE,
183 /* for lustre proc read, the read count must be less than PAGE_SIZE */
192 start = page + *ppos;
193 } else if (start < page) {
197 count = (rc < size) ? rc : size;
198 if (copy_to_user(buf, start, count)) {
205 free_page((unsigned long)page);
209 static ssize_t lprocfs_fops_write(struct file *f, const char __user *buf, size_t size, loff_t *ppos)
211 struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
215 if (!dp->deleted && dp->write_proc)
216 rc = dp->write_proc(f, buf, size, dp->data);
221 static struct file_operations lprocfs_generic_fops = {
222 .owner = THIS_MODULE,
223 .read = lprocfs_fops_read,
224 .write = lprocfs_fops_write,
227 int lprocfs_evict_client_open(struct inode *inode, struct file *f)
229 struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
230 struct obd_device *obd = dp->data;
232 atomic_inc(&obd->obd_evict_inprogress);
237 int lprocfs_evict_client_release(struct inode *inode, struct file *f)
239 struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
240 struct obd_device *obd = dp->data;
242 atomic_dec(&obd->obd_evict_inprogress);
243 wake_up(&obd->obd_evict_inprogress_waitq);
248 struct file_operations lprocfs_evict_client_fops = {
249 .owner = THIS_MODULE,
250 .read = lprocfs_fops_read,
251 .write = lprocfs_fops_write,
252 .open = lprocfs_evict_client_open,
253 .release = lprocfs_evict_client_release,
255 EXPORT_SYMBOL(lprocfs_evict_client_fops);
260 * \param root [in] The parent proc entry on which new entry will be added.
261 * \param list [in] Array of proc entries to be added.
262 * \param data [in] The argument to be passed when entries read/write routines
263 * are called through /proc file.
265 * \retval 0 on success
268 int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
271 if (root == NULL || list == NULL)
274 while (list->name != NULL) {
275 struct proc_dir_entry *cur_root, *proc;
276 char *pathcopy, *cur, *next, pathbuf[64];
277 int pathsize = strlen(list->name) + 1;
282 /* need copy of path for strsep */
283 if (strlen(list->name) > sizeof(pathbuf) - 1) {
284 OBD_ALLOC(pathcopy, pathsize);
285 if (pathcopy == NULL)
292 strcpy(pathcopy, list->name);
294 while (cur_root != NULL && (cur = strsep(&next, "/"))) {
295 if (*cur =='\0') /* skip double/trailing "/" */
298 proc = lprocfs_srch(cur_root, cur);
299 CDEBUG(D_OTHER, "cur_root=%s, cur=%s, next=%s, (%s)\n",
300 cur_root->name, cur, next,
301 (proc ? "exists" : "new"));
303 cur_root = (proc ? proc :
304 proc_mkdir(cur, cur_root));
305 } else if (proc == NULL) {
307 if (list->proc_mode != 0000) {
308 mode = list->proc_mode;
312 if (list->write_fptr)
315 proc = create_proc_entry(cur, mode, cur_root);
319 if (pathcopy != pathbuf)
320 OBD_FREE(pathcopy, pathsize);
322 if (cur_root == NULL || proc == NULL) {
323 CERROR("LprocFS: No memory to create /proc entry %s",
329 proc->proc_fops = list->fops;
331 proc->proc_fops = &lprocfs_generic_fops;
332 proc->read_proc = list->read_fptr;
333 proc->write_proc = list->write_fptr;
334 proc->data = (list->data ? list->data : data);
340 void lprocfs_remove(struct proc_dir_entry **rooth)
342 struct proc_dir_entry *root = *rooth;
343 struct proc_dir_entry *temp = root;
344 struct proc_dir_entry *rm_entry;
345 struct proc_dir_entry *parent;
351 parent = root->parent;
352 LASSERT(parent != NULL);
353 LPROCFS_WRITE_ENTRY(); /* search vs remove race */
356 while (temp->subdir != NULL)
362 /* Memory corruption once caused this to fail, and
363 without this LASSERT we would loop here forever. */
364 LASSERTF(strlen(rm_entry->name) == rm_entry->namelen,
365 "0x%p %s/%s len %d\n", rm_entry, temp->name,
366 rm_entry->name, (int)strlen(rm_entry->name));
368 /* Now, the rm_entry->deleted flags is protected
369 * by _lprocfs_lock. */
370 rm_entry->data = NULL;
371 remove_proc_entry(rm_entry->name, temp);
375 LPROCFS_WRITE_EXIT();
378 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
380 LASSERT(parent != NULL);
381 remove_proc_entry(name, parent);
384 struct proc_dir_entry *lprocfs_register(const char *name,
385 struct proc_dir_entry *parent,
386 struct lprocfs_vars *list, void *data)
388 struct proc_dir_entry *newchild;
390 newchild = lprocfs_srch(parent, name);
391 if (newchild != NULL) {
392 CERROR(" Lproc: Attempting to register %s more than once \n",
394 return ERR_PTR(-EALREADY);
397 newchild = proc_mkdir(name, parent);
398 if (newchild != NULL && list != NULL) {
399 int rc = lprocfs_add_vars(newchild, list, data);
401 lprocfs_remove(&newchild);
408 /* Generic callbacks */
409 int lprocfs_rd_uint(char *page, char **start, off_t off,
410 int count, int *eof, void *data)
412 unsigned int *temp = (unsigned int *)data;
413 return snprintf(page, count, "%u\n", *temp);
416 int lprocfs_wr_uint(struct file *file, const char *buffer,
417 unsigned long count, void *data)
420 char dummy[MAX_STRING_SIZE + 1], *end;
423 dummy[MAX_STRING_SIZE] = '\0';
424 if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
427 tmp = simple_strtoul(dummy, &end, 0);
431 *p = (unsigned int)tmp;
435 int lprocfs_rd_u64(char *page, char **start, off_t off,
436 int count, int *eof, void *data)
438 LASSERT(data != NULL);
440 return snprintf(page, count, LPU64"\n", *(__u64 *)data);
443 int lprocfs_rd_atomic(char *page, char **start, off_t off,
444 int count, int *eof, void *data)
446 atomic_t *atom = (atomic_t *)data;
447 LASSERT(atom != NULL);
449 return snprintf(page, count, "%d\n", atomic_read(atom));
452 int lprocfs_wr_atomic(struct file *file, const char *buffer,
453 unsigned long count, void *data)
455 atomic_t *atm = data;
459 rc = lprocfs_write_helper(buffer, count, &val);
466 atomic_set(atm, val);
470 int lprocfs_rd_uuid(char *page, char **start, off_t off, int count,
471 int *eof, void *data)
473 struct obd_device *obd = (struct obd_device*)data;
475 LASSERT(obd != NULL);
477 return snprintf(page, count, "%s\n", obd->obd_uuid.uuid);
480 int lprocfs_rd_name(char *page, char **start, off_t off, int count,
481 int *eof, void* data)
483 struct obd_device *dev = (struct obd_device *)data;
485 LASSERT(dev != NULL);
486 LASSERT(dev->obd_name != NULL);
488 return snprintf(page, count, "%s\n", dev->obd_name);
491 int lprocfs_rd_fstype(char *page, char **start, off_t off, int count, int *eof,
494 struct obd_device *obd = (struct obd_device *)data;
496 LASSERT(obd != NULL);
497 LASSERT(obd->obd_fsops != NULL);
498 LASSERT(obd->obd_fsops->fs_type != NULL);
499 return snprintf(page, count, "%s\n", obd->obd_fsops->fs_type);
502 int lprocfs_rd_blksize(char *page, char **start, off_t off, int count,
503 int *eof, void *data)
505 struct obd_statfs osfs;
506 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
510 rc = snprintf(page, count, "%u\n", osfs.os_bsize);
515 int lprocfs_rd_kbytestotal(char *page, char **start, off_t off, int count,
516 int *eof, void *data)
518 struct obd_statfs osfs;
519 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
522 __u32 blk_size = osfs.os_bsize >> 10;
523 __u64 result = osfs.os_blocks;
525 while (blk_size >>= 1)
529 rc = snprintf(page, count, LPU64"\n", result);
534 int lprocfs_rd_kbytesfree(char *page, char **start, off_t off, int count,
535 int *eof, void *data)
537 struct obd_statfs osfs;
538 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
541 __u32 blk_size = osfs.os_bsize >> 10;
542 __u64 result = osfs.os_bfree;
544 while (blk_size >>= 1)
548 rc = snprintf(page, count, LPU64"\n", result);
553 int lprocfs_rd_kbytesavail(char *page, char **start, off_t off, int count,
554 int *eof, void *data)
556 struct obd_statfs osfs;
557 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
560 __u32 blk_size = osfs.os_bsize >> 10;
561 __u64 result = osfs.os_bavail;
563 while (blk_size >>= 1)
567 rc = snprintf(page, count, LPU64"\n", result);
572 int lprocfs_rd_filestotal(char *page, char **start, off_t off, int count,
573 int *eof, void *data)
575 struct obd_statfs osfs;
576 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
580 rc = snprintf(page, count, LPU64"\n", osfs.os_files);
586 int lprocfs_rd_filesfree(char *page, char **start, off_t off, int count,
587 int *eof, void *data)
589 struct obd_statfs osfs;
590 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
594 rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
599 int lprocfs_rd_server_uuid(char *page, char **start, off_t off, int count,
600 int *eof, void *data)
602 struct obd_device *obd = (struct obd_device *)data;
603 struct obd_import *imp;
604 char *imp_state_name = NULL;
607 LASSERT(obd != NULL);
608 LPROCFS_CLIMP_CHECK(obd);
609 imp = obd->u.cli.cl_import;
610 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
612 rc = snprintf(page, count, "%s\t%s%s\n",
613 obd2cli_tgt(obd), imp_state_name,
614 imp->imp_deactive ? "\tDEACTIVATED" : "");
616 LPROCFS_CLIMP_EXIT(obd);
620 int lprocfs_rd_conn_uuid(char *page, char **start, off_t off, int count,
621 int *eof, void *data)
623 struct obd_device *obd = (struct obd_device*)data;
624 struct ptlrpc_connection *conn;
627 LASSERT(obd != NULL);
629 LPROCFS_CLIMP_CHECK(obd);
630 conn = obd->u.cli.cl_import->imp_connection;
631 LASSERT(conn != NULL);
633 if (obd->u.cli.cl_import) {
634 rc = snprintf(page, count, "%s\n",
635 conn->c_remote_uuid.uuid);
637 rc = snprintf(page, count, "%s\n", "<none>");
640 LPROCFS_CLIMP_EXIT(obd);
644 int lprocfs_at_hist_helper(char *page, int count, int rc,
645 struct adaptive_timeout *at)
648 for (i = 0; i < AT_BINS; i++)
649 rc += snprintf(page + rc, count - rc, "%3u ", at->at_hist[i]);
650 rc += snprintf(page + rc, count - rc, "\n");
654 /* See also ptlrpc_lprocfs_rd_timeouts */
655 int lprocfs_rd_timeouts(char *page, char **start, off_t off, int count,
656 int *eof, void *data)
658 struct obd_device *obd = (struct obd_device *)data;
659 struct obd_import *imp;
660 unsigned int cur, worst;
665 LASSERT(obd != NULL);
666 LPROCFS_CLIMP_CHECK(obd);
667 imp = obd->u.cli.cl_import;
670 now = cfs_time_current_sec();
672 /* Some network health info for kicks */
673 s2dhms(&ts, now - imp->imp_last_reply_time);
674 rc += snprintf(page + rc, count - rc,
675 "%-10s : %ld, "DHMS_FMT" ago\n",
676 "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
679 cur = at_get(&imp->imp_at.iat_net_latency);
680 worst = imp->imp_at.iat_net_latency.at_worst_ever;
681 worstt = imp->imp_at.iat_net_latency.at_worst_time;
682 s2dhms(&ts, now - worstt);
683 rc += snprintf(page + rc, count - rc,
684 "%-10s : cur %3u worst %3u (at %ld, "DHMS_FMT" ago) ",
685 "network", cur, worst, worstt, DHMS_VARS(&ts));
686 rc = lprocfs_at_hist_helper(page, count, rc,
687 &imp->imp_at.iat_net_latency);
689 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
690 if (imp->imp_at.iat_portal[i] == 0)
692 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
693 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
694 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
695 s2dhms(&ts, now - worstt);
696 rc += snprintf(page + rc, count - rc,
697 "portal %-2d : cur %3u worst %3u (at %ld, "
698 DHMS_FMT" ago) ", imp->imp_at.iat_portal[i],
699 cur, worst, worstt, DHMS_VARS(&ts));
700 rc = lprocfs_at_hist_helper(page, count, rc,
701 &imp->imp_at.iat_service_estimate[i]);
704 LPROCFS_CLIMP_EXIT(obd);
708 static const char *obd_connect_names[] = {
735 "mds_mds_connection",
738 "alt_checksum_algorithm",
745 int lprocfs_rd_connect_flags(char *page, char **start, off_t off,
746 int count, int *eof, void *data)
748 struct obd_device *obd = data;
749 __u64 mask = 1, flags;
752 LPROCFS_CLIMP_CHECK(obd);
753 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
754 ret = snprintf(page, count, "flags="LPX64"\n", flags);
755 for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
757 ret += snprintf(page + ret, count - ret, "%s\n",
758 obd_connect_names[i]);
760 if (flags & ~(mask - 1))
761 ret += snprintf(page + ret, count - ret,
762 "unknown flags "LPX64"\n", flags & ~(mask - 1));
764 LPROCFS_CLIMP_EXIT(obd);
767 EXPORT_SYMBOL(lprocfs_rd_connect_flags);
769 int lprocfs_rd_num_exports(char *page, char **start, off_t off, int count,
770 int *eof, void *data)
772 struct obd_device *obd = (struct obd_device*)data;
774 LASSERT(obd != NULL);
776 return snprintf(page, count, "%u\n", obd->obd_num_exports);
779 int lprocfs_rd_numrefs(char *page, char **start, off_t off, int count,
780 int *eof, void *data)
782 struct obd_type *class = (struct obd_type*) data;
784 LASSERT(class != NULL);
786 return snprintf(page, count, "%d\n", class->typ_refcnt);
789 int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list)
793 LASSERT(obd != NULL);
794 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
795 LASSERT(obd->obd_type->typ_procroot != NULL);
797 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
798 obd->obd_type->typ_procroot,
800 if (IS_ERR(obd->obd_proc_entry)) {
801 rc = PTR_ERR(obd->obd_proc_entry);
802 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
803 obd->obd_proc_entry = NULL;
808 int lprocfs_obd_cleanup(struct obd_device *obd)
812 if (obd->obd_proc_exports_entry) {
813 /* Should be no exports left */
814 LASSERT(obd->obd_proc_exports_entry->subdir == NULL);
815 lprocfs_remove(&obd->obd_proc_exports_entry);
817 lprocfs_remove(&obd->obd_proc_entry);
821 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
823 CDEBUG(D_CONFIG, "stat %p - data %p/%p/%p\n", client_stat,
824 client_stat->nid_proc, client_stat->nid_stats,
825 client_stat->nid_brw_stats);
827 LASSERTF(client_stat->nid_exp_ref_count == 0, "count %d\n",
828 client_stat->nid_exp_ref_count);
830 hlist_del_init(&client_stat->nid_hash);
832 if (client_stat->nid_proc)
833 lprocfs_remove(&client_stat->nid_proc);
835 if (client_stat->nid_stats)
836 lprocfs_free_stats(&client_stat->nid_stats);
838 if (client_stat->nid_brw_stats)
839 OBD_FREE(client_stat->nid_brw_stats, sizeof(struct brw_stats));
841 if (client_stat->nid_ldlm_stats)
842 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
844 OBD_FREE(client_stat, sizeof(*client_stat));
849 void lprocfs_free_per_client_stats(struct obd_device *obd)
851 struct nid_stat *stat;
854 /* we need extra list - because hash_exit called to early */
855 /* not need locking because all clients is died */
856 while(!list_empty(&obd->obd_nid_stats)) {
857 stat = list_entry(obd->obd_nid_stats.next,
858 struct nid_stat, nid_list);
859 list_del_init(&stat->nid_list);
860 lprocfs_free_client_stats(stat);
866 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
867 enum lprocfs_stats_flags flags)
869 struct lprocfs_stats *stats;
870 unsigned int percpusize;
872 unsigned int num_cpu;
877 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
880 num_cpu = num_possible_cpus();
882 OBD_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_cpu]));
886 if (flags & LPROCFS_STATS_FLAG_NOPERCPU) {
887 stats->ls_flags = flags;
888 spin_lock_init(&stats->ls_lock);
889 /* Use this lock only if there are no percpu areas */
894 percpusize = offsetof(struct lprocfs_percpu, lp_cntr[num]);
896 percpusize = L1_CACHE_ALIGN(percpusize);
898 for (i = 0; i < num_cpu; i++) {
899 OBD_ALLOC(stats->ls_percpu[i], percpusize);
900 if (stats->ls_percpu[i] == NULL) {
901 for (j = 0; j < i; j++) {
902 OBD_FREE(stats->ls_percpu[j], percpusize);
903 stats->ls_percpu[j] = NULL;
908 if (stats->ls_percpu[0] == NULL) {
909 OBD_FREE(stats, offsetof(typeof(*stats),
910 ls_percpu[num_cpu]));
918 void lprocfs_free_stats(struct lprocfs_stats **statsh)
920 struct lprocfs_stats *stats = *statsh;
921 unsigned int num_cpu;
922 unsigned int percpusize;
925 if (stats == NULL || stats->ls_num == 0)
929 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
932 num_cpu = num_possible_cpus();
934 percpusize = offsetof(struct lprocfs_percpu, lp_cntr[stats->ls_num]);
936 percpusize = L1_CACHE_ALIGN(percpusize);
937 for (i = 0; i < num_cpu; i++)
938 OBD_FREE(stats->ls_percpu[i], percpusize);
939 OBD_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_cpu]));
942 void lprocfs_clear_stats(struct lprocfs_stats *stats)
944 struct lprocfs_counter *percpu_cntr;
946 unsigned int num_cpu;
948 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU);
950 for (i = 0; i < num_cpu; i++) {
951 for (j = 0; j < stats->ls_num; j++) {
952 percpu_cntr = &(stats->ls_percpu[i])->lp_cntr[j];
953 atomic_inc(&percpu_cntr->lc_cntl.la_entry);
954 percpu_cntr->lc_count = 0;
955 percpu_cntr->lc_sum = 0;
956 percpu_cntr->lc_min = LC_MIN_INIT;
957 percpu_cntr->lc_max = 0;
958 percpu_cntr->lc_sumsquare = 0;
959 atomic_inc(&percpu_cntr->lc_cntl.la_exit);
963 lprocfs_stats_unlock(stats);
966 static ssize_t lprocfs_stats_seq_write(struct file *file, const char *buf,
967 size_t len, loff_t *off)
969 struct seq_file *seq = file->private_data;
970 struct lprocfs_stats *stats = seq->private;
972 lprocfs_clear_stats(stats);
977 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
979 struct lprocfs_stats *stats = p->private;
980 /* return 1st cpu location */
981 return (*pos >= stats->ls_num) ? NULL :
982 &(stats->ls_percpu[0]->lp_cntr[*pos]);
985 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
989 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
991 struct lprocfs_stats *stats = p->private;
993 return (*pos >= stats->ls_num) ? NULL :
994 &(stats->ls_percpu[0]->lp_cntr[*pos]);
997 /* seq file export of one lprocfs counter */
998 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1000 struct lprocfs_stats *stats = p->private;
1001 struct lprocfs_counter *cntr = v;
1002 struct lprocfs_counter t, ret = { .lc_min = LC_MIN_INIT };
1004 unsigned int num_cpu;
1006 if (cntr == &(stats->ls_percpu[0])->lp_cntr[0]) {
1008 do_gettimeofday(&now);
1009 rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
1010 "snapshot_time", now.tv_sec, now.tv_usec);
1014 idx = cntr - &(stats->ls_percpu[0])->lp_cntr[0];
1016 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1019 num_cpu = num_possible_cpus();
1021 for (i = 0; i < num_cpu; i++) {
1022 struct lprocfs_counter *percpu_cntr =
1023 &(stats->ls_percpu[i])->lp_cntr[idx];
1027 centry = atomic_read(&percpu_cntr->lc_cntl.la_entry);
1028 t.lc_count = percpu_cntr->lc_count;
1029 t.lc_sum = percpu_cntr->lc_sum;
1030 t.lc_min = percpu_cntr->lc_min;
1031 t.lc_max = percpu_cntr->lc_max;
1032 t.lc_sumsquare = percpu_cntr->lc_sumsquare;
1033 } while (centry != atomic_read(&percpu_cntr->lc_cntl.la_entry) &&
1034 centry != atomic_read(&percpu_cntr->lc_cntl.la_exit));
1035 ret.lc_count += t.lc_count;
1036 ret.lc_sum += t.lc_sum;
1037 if (t.lc_min < ret.lc_min)
1038 ret.lc_min = t.lc_min;
1039 if (t.lc_max > ret.lc_max)
1040 ret.lc_max = t.lc_max;
1041 ret.lc_sumsquare += t.lc_sumsquare;
1044 rc = seq_printf(p, "%-25s "LPD64" samples [%s]", cntr->lc_name,
1045 ret.lc_count, cntr->lc_units);
1049 if ((cntr->lc_config & LPROCFS_CNTR_AVGMINMAX) && (ret.lc_count > 0)) {
1050 rc = seq_printf(p, " "LPD64" "LPD64" "LPD64,
1051 ret.lc_min, ret.lc_max, ret.lc_sum);
1054 if (cntr->lc_config & LPROCFS_CNTR_STDDEV)
1055 rc = seq_printf(p, " "LPD64, ret.lc_sumsquare);
1059 rc = seq_printf(p, "\n");
1061 return (rc < 0) ? rc : 0;
1064 struct seq_operations lprocfs_stats_seq_sops = {
1065 start: lprocfs_stats_seq_start,
1066 stop: lprocfs_stats_seq_stop,
1067 next: lprocfs_stats_seq_next,
1068 show: lprocfs_stats_seq_show,
1071 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1073 struct proc_dir_entry *dp = PDE(inode);
1074 struct seq_file *seq;
1077 LPROCFS_ENTRY_AND_CHECK(dp);
1078 rc = seq_open(file, &lprocfs_stats_seq_sops);
1083 seq = file->private_data;
1084 seq->private = dp->data;
1088 struct file_operations lprocfs_stats_seq_fops = {
1089 .owner = THIS_MODULE,
1090 .open = lprocfs_stats_seq_open,
1092 .write = lprocfs_stats_seq_write,
1093 .llseek = seq_lseek,
1094 .release = lprocfs_seq_release,
1097 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1098 struct lprocfs_stats *stats)
1100 struct proc_dir_entry *entry;
1101 LASSERT(root != NULL);
1103 entry = create_proc_entry(name, 0644, root);
1106 entry->proc_fops = &lprocfs_stats_seq_fops;
1107 entry->data = (void *)stats;
1111 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1112 unsigned conf, const char *name, const char *units)
1114 struct lprocfs_counter *c;
1116 unsigned int num_cpu;
1118 LASSERT(stats != NULL);
1120 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU);
1122 for (i = 0; i < num_cpu; i++) {
1123 c = &(stats->ls_percpu[i]->lp_cntr[index]);
1124 c->lc_config = conf;
1127 c->lc_min = LC_MIN_INIT;
1130 c->lc_units = units;
1133 lprocfs_stats_unlock(stats);
1135 EXPORT_SYMBOL(lprocfs_counter_init);
1137 #define LPROCFS_OBD_OP_INIT(base, stats, op) \
1139 unsigned int coffset = base + OBD_COUNTER_OFFSET(op); \
1140 LASSERT(coffset < stats->ls_num); \
1141 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1144 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
1146 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
1147 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
1148 LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
1149 LPROCFS_OBD_OP_INIT(num_private_stats, stats, attach);
1150 LPROCFS_OBD_OP_INIT(num_private_stats, stats, detach);
1151 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
1152 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
1153 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
1154 LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
1155 LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
1156 LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
1157 LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
1158 LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
1159 LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
1160 LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
1161 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
1162 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
1163 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
1164 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_delete);
1165 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
1166 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
1167 LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
1168 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
1169 LPROCFS_OBD_OP_INIT(num_private_stats, stats, checkmd);
1170 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preallocate);
1171 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precreate);
1172 LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
1173 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
1174 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
1175 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
1176 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
1177 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
1178 LPROCFS_OBD_OP_INIT(num_private_stats, stats, brw);
1179 LPROCFS_OBD_OP_INIT(num_private_stats, stats, brw_async);
1180 LPROCFS_OBD_OP_INIT(num_private_stats, stats, prep_async_page);
1181 LPROCFS_OBD_OP_INIT(num_private_stats, stats, reget_short_lock);
1182 LPROCFS_OBD_OP_INIT(num_private_stats, stats, release_short_lock);
1183 LPROCFS_OBD_OP_INIT(num_private_stats, stats, queue_async_io);
1184 LPROCFS_OBD_OP_INIT(num_private_stats, stats, queue_group_io);
1185 LPROCFS_OBD_OP_INIT(num_private_stats, stats, trigger_group_io);
1186 LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_async_flags);
1187 LPROCFS_OBD_OP_INIT(num_private_stats, stats, teardown_async_page);
1188 LPROCFS_OBD_OP_INIT(num_private_stats, stats, merge_lvb);
1189 LPROCFS_OBD_OP_INIT(num_private_stats, stats, adjust_kms);
1190 LPROCFS_OBD_OP_INIT(num_private_stats, stats, punch);
1191 LPROCFS_OBD_OP_INIT(num_private_stats, stats, sync);
1192 LPROCFS_OBD_OP_INIT(num_private_stats, stats, migrate);
1193 LPROCFS_OBD_OP_INIT(num_private_stats, stats, copy);
1194 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iterate);
1195 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
1196 LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
1197 LPROCFS_OBD_OP_INIT(num_private_stats, stats, enqueue);
1198 LPROCFS_OBD_OP_INIT(num_private_stats, stats, match);
1199 LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata);
1200 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel);
1201 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel_unused);
1202 LPROCFS_OBD_OP_INIT(num_private_stats, stats, join_lru);
1203 LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
1204 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
1205 LPROCFS_OBD_OP_INIT(num_private_stats, stats, extent_calc);
1206 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_init);
1207 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_connect);
1208 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_finish);
1209 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pin);
1210 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpin);
1211 LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
1212 LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
1213 LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
1214 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
1215 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
1216 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
1217 LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
1218 LPROCFS_OBD_OP_INIT(num_private_stats, stats, register_page_removal_cb);
1219 LPROCFS_OBD_OP_INIT(num_private_stats,stats,unregister_page_removal_cb);
1220 LPROCFS_OBD_OP_INIT(num_private_stats, stats, register_lock_cancel_cb);
1221 LPROCFS_OBD_OP_INIT(num_private_stats, stats,unregister_lock_cancel_cb);
1222 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
1223 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
1224 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
1225 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
1228 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
1230 struct lprocfs_stats *stats;
1231 unsigned int num_stats;
1234 LASSERT(obd->obd_stats == NULL);
1235 LASSERT(obd->obd_proc_entry != NULL);
1236 LASSERT(obd->obd_cntr_base == 0);
1238 num_stats = ((int)sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
1239 num_private_stats - 1 /* o_owner */;
1240 stats = lprocfs_alloc_stats(num_stats, 0);
1244 lprocfs_init_ops_stats(num_private_stats, stats);
1246 for (i = num_private_stats; i < num_stats; i++) {
1247 /* If this LBUGs, it is likely that an obd
1248 * operation was added to struct obd_ops in
1249 * <obd.h>, and that the corresponding line item
1250 * LPROCFS_OBD_OP_INIT(.., .., opname)
1251 * is missing from the list above. */
1252 LASSERTF(stats->ls_percpu[0]->lp_cntr[i].lc_name != NULL,
1253 "Missing obd_stat initializer obd_op "
1254 "operation at offset %d.\n", i - num_private_stats);
1256 rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
1258 lprocfs_free_stats(&stats);
1260 obd->obd_stats = stats;
1261 obd->obd_cntr_base = num_private_stats;
1266 void lprocfs_free_obd_stats(struct obd_device *obd)
1269 lprocfs_free_stats(&obd->obd_stats);
1272 #define LPROCFS_MD_OP_INIT(base, stats, op) \
1274 unsigned int coffset = base + MD_COUNTER_OFFSET(op); \
1275 LASSERT(coffset < stats->ls_num); \
1276 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1279 int lprocfs_alloc_md_stats(struct obd_device *obd,
1280 unsigned num_private_stats)
1282 struct lprocfs_stats *stats;
1283 unsigned int num_stats;
1286 LASSERT(obd->md_stats == NULL);
1287 LASSERT(obd->obd_proc_entry != NULL);
1288 LASSERT(obd->md_cntr_base == 0);
1290 num_stats = 1 + MD_COUNTER_OFFSET(revalidate_lock) +
1292 stats = lprocfs_alloc_stats(num_stats, 0);
1296 LPROCFS_MD_OP_INIT(num_private_stats, stats, getstatus);
1297 LPROCFS_MD_OP_INIT(num_private_stats, stats, change_cbdata);
1298 LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
1299 LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
1300 LPROCFS_MD_OP_INIT(num_private_stats, stats, done_writing);
1301 LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
1302 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr);
1303 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr_name);
1304 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_lock);
1305 LPROCFS_MD_OP_INIT(num_private_stats, stats, link);
1306 LPROCFS_MD_OP_INIT(num_private_stats, stats, rename);
1307 LPROCFS_MD_OP_INIT(num_private_stats, stats, is_subdir);
1308 LPROCFS_MD_OP_INIT(num_private_stats, stats, setattr);
1309 LPROCFS_MD_OP_INIT(num_private_stats, stats, sync);
1310 LPROCFS_MD_OP_INIT(num_private_stats, stats, readpage);
1311 LPROCFS_MD_OP_INIT(num_private_stats, stats, unlink);
1312 LPROCFS_MD_OP_INIT(num_private_stats, stats, setxattr);
1313 LPROCFS_MD_OP_INIT(num_private_stats, stats, getxattr);
1314 LPROCFS_MD_OP_INIT(num_private_stats, stats, init_ea_size);
1315 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_lustre_md);
1316 LPROCFS_MD_OP_INIT(num_private_stats, stats, free_lustre_md);
1317 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_open_replay_data);
1318 LPROCFS_MD_OP_INIT(num_private_stats, stats, clear_open_replay_data);
1319 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
1320 LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
1321 LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
1322 LPROCFS_MD_OP_INIT(num_private_stats, stats, renew_capa);
1323 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_remote_perm);
1324 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
1325 LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
1327 for (i = num_private_stats; i < num_stats; i++) {
1328 if (stats->ls_percpu[0]->lp_cntr[i].lc_name == NULL) {
1329 CERROR("Missing md_stat initializer md_op "
1330 "operation at offset %d. Aborting.\n",
1331 i - num_private_stats);
1335 rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
1337 lprocfs_free_stats(&stats);
1339 obd->md_stats = stats;
1340 obd->md_cntr_base = num_private_stats;
1345 void lprocfs_free_md_stats(struct obd_device *obd)
1347 struct lprocfs_stats *stats = obd->md_stats;
1349 if (stats != NULL) {
1350 obd->md_stats = NULL;
1351 lprocfs_free_stats(&stats);
1355 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1357 lprocfs_counter_init(ldlm_stats,
1358 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1359 0, "ldlm_enqueue", "reqs");
1360 lprocfs_counter_init(ldlm_stats,
1361 LDLM_CONVERT - LDLM_FIRST_OPC,
1362 0, "ldlm_convert", "reqs");
1363 lprocfs_counter_init(ldlm_stats,
1364 LDLM_CANCEL - LDLM_FIRST_OPC,
1365 0, "ldlm_cancel", "reqs");
1366 lprocfs_counter_init(ldlm_stats,
1367 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1368 0, "ldlm_bl_callback", "reqs");
1369 lprocfs_counter_init(ldlm_stats,
1370 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1371 0, "ldlm_cp_callback", "reqs");
1372 lprocfs_counter_init(ldlm_stats,
1373 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1374 0, "ldlm_gl_callback", "reqs");
1377 int lprocfs_exp_rd_nid(char *page, char **start, off_t off, int count,
1378 int *eof, void *data)
1380 struct obd_export *exp = (struct obd_export*)data;
1381 LASSERT(exp != NULL);
1383 return snprintf(page, count, "%s\n", obd_export_nid2str(exp));
1386 struct exp_uuid_cb_data {
1394 lprocfs_exp_rd_cb_data_init(struct exp_uuid_cb_data *cb_data, char *page,
1395 int count, int *eof, int *len)
1397 cb_data->page = page;
1398 cb_data->count = count;
1403 void lprocfs_exp_print_uuid(void *obj, void *cb_data)
1405 struct obd_export *exp = (struct obd_export *)obj;
1406 struct exp_uuid_cb_data *data = (struct exp_uuid_cb_data *)cb_data;
1408 if (exp->exp_nid_stats)
1409 *data->len += snprintf((data->page + *data->len),
1410 data->count, "%s\n",
1411 obd_uuid2str(&exp->exp_client_uuid));
1414 int lprocfs_exp_rd_uuid(char *page, char **start, off_t off, int count,
1415 int *eof, void *data)
1417 struct nid_stat *stats = (struct nid_stat *)data;
1418 struct exp_uuid_cb_data cb_data;
1419 struct obd_device *obd = stats->nid_obd;
1424 lprocfs_exp_rd_cb_data_init(&cb_data, page, count, eof, &len);
1425 lustre_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1426 lprocfs_exp_print_uuid, &cb_data);
1427 return (*cb_data.len);
1430 void lprocfs_exp_print_hash(void *obj, void *cb_data)
1432 struct exp_uuid_cb_data *data = cb_data;
1433 struct obd_export *exp = obj;
1436 lh = exp->exp_lock_hash;
1439 *data->len += lustre_hash_debug_header(data->page,
1442 *data->len += lustre_hash_debug_str(lh, data->page + *data->len,
1447 int lprocfs_exp_rd_hash(char *page, char **start, off_t off, int count,
1448 int *eof, void *data)
1450 struct nid_stat *stats = (struct nid_stat *)data;
1451 struct exp_uuid_cb_data cb_data;
1452 struct obd_device *obd = stats->nid_obd;
1457 lprocfs_exp_rd_cb_data_init(&cb_data, page, count, eof, &len);
1459 lustre_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1460 lprocfs_exp_print_hash, &cb_data);
1461 return (*cb_data.len);
1464 int lprocfs_nid_stats_clear_read(char *page, char **start, off_t off,
1465 int count, int *eof, void *data)
1468 return snprintf(page, count, "%s\n",
1469 "Write into this file to clear all nid stats and "
1470 "stale nid entries");
1472 EXPORT_SYMBOL(lprocfs_nid_stats_clear_read);
1474 void lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
1476 struct nid_stat *stat = obj;
1479 /* object has only hash + iterate_all references.
1480 * add/delete blocked by hash bucket lock */
1481 CDEBUG(D_INFO,"refcnt %d\n", stat->nid_exp_ref_count);
1482 if (stat->nid_exp_ref_count == 2) {
1483 hlist_del_init(&stat->nid_hash);
1484 stat->nid_exp_ref_count--;
1485 spin_lock(&stat->nid_obd->obd_nid_lock);
1486 list_move(&stat->nid_list, data);
1487 spin_unlock(&stat->nid_obd->obd_nid_lock);
1491 /* we has reference to object - only clear data*/
1492 if (stat->nid_stats)
1493 lprocfs_clear_stats(stat->nid_stats);
1495 if (stat->nid_brw_stats) {
1496 for (i = 0; i < BRW_LAST; i++)
1497 lprocfs_oh_clear(&stat->nid_brw_stats->hist[i]);
1503 int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
1504 unsigned long count, void *data)
1506 struct obd_device *obd = (struct obd_device *)data;
1507 struct nid_stat *client_stat;
1508 CFS_LIST_HEAD(free_list);
1510 lustre_hash_for_each(obd->obd_nid_stats_hash,
1511 lprocfs_nid_stats_clear_write_cb, &free_list);
1513 while (!list_empty(&free_list)) {
1514 client_stat = list_entry(free_list.next, struct nid_stat, nid_list);
1515 list_del_init(&client_stat->nid_list);
1516 lprocfs_free_client_stats(client_stat);
1521 EXPORT_SYMBOL(lprocfs_nid_stats_clear_write);
1523 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid, int *newnid)
1525 struct nid_stat *new_stat, *old_stat;
1526 struct nid_stat_uuid *new_ns_uuid;
1527 struct obd_device *obd = NULL;
1528 cfs_proc_dir_entry_t *entry;
1534 if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
1535 !exp->exp_obd->obd_nid_stats_hash)
1538 /* not test against zero because eric say:
1539 * You may only test nid against another nid, or LNET_NID_ANY.
1540 * Anything else is nonsense.*/
1541 if (!nid || *nid == LNET_NID_ANY)
1546 CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
1548 OBD_ALLOC(new_stat, sizeof(struct nid_stat));
1549 if (new_stat == NULL)
1552 OBD_ALLOC(new_ns_uuid, sizeof(struct nid_stat_uuid));
1553 if (new_ns_uuid == NULL) {
1554 OBD_FREE(new_stat, sizeof(struct nid_stat));
1557 CFS_INIT_LIST_HEAD(&new_ns_uuid->ns_uuid_list);
1558 strncpy(new_ns_uuid->ns_uuid.uuid, exp->exp_client_uuid.uuid,
1559 sizeof(struct obd_uuid));
1561 CFS_INIT_LIST_HEAD(&new_stat->nid_uuid_list);
1562 new_stat->nid = *nid;
1563 new_stat->nid_obd = exp->exp_obd;
1564 new_stat->nid_exp_ref_count = 1; /* live in hash after destroy export */
1566 /* protect competitive add to list, not need locking on destroy */
1567 spin_lock(&obd->obd_nid_lock);
1568 list_add(&new_stat->nid_list, &obd->obd_nid_stats);
1569 spin_unlock(&obd->obd_nid_lock);
1571 old_stat = lustre_hash_findadd_unique(obd->obd_nid_stats_hash,
1572 nid, &new_stat->nid_hash);
1573 CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
1574 old_stat, libcfs_nid2str(*nid), new_stat->nid_exp_ref_count);
1576 /* Return -EALREADY here so that we know that the /proc
1577 * entry already has been created */
1578 if (old_stat != new_stat) {
1579 struct nid_stat_uuid *tmp_uuid;
1582 exp->exp_nid_stats = old_stat;
1583 /* We need to decrement the refcount if the uuid was
1584 * already in our list */
1585 spin_lock(&obd->obd_nid_lock);
1586 list_for_each_entry(tmp_uuid, &old_stat->nid_uuid_list,
1588 if (tmp_uuid && obd_uuid_equals(&tmp_uuid->ns_uuid,
1589 &exp->exp_client_uuid)){
1591 --old_stat->nid_exp_ref_count;
1597 list_add(&new_ns_uuid->ns_uuid_list,
1598 &old_stat->nid_uuid_list);
1600 OBD_FREE(new_ns_uuid, sizeof(struct nid_stat));
1602 spin_unlock(&obd->obd_nid_lock);
1604 GOTO(destroy_new, rc = -EALREADY);
1606 /* not found - create */
1607 new_stat->nid_proc = lprocfs_register(libcfs_nid2str(*nid),
1608 obd->obd_proc_exports_entry,
1610 if (new_stat->nid_proc == NULL) {
1611 CERROR("Error making export directory for nid %s\n",
1612 libcfs_nid2str(*nid));
1613 lustre_hash_del(obd->obd_nid_stats_hash, nid,
1614 &new_stat->nid_hash);
1615 GOTO(destroy_new, rc = -ENOMEM);
1618 /* Add in uuid to our nid_stats list */
1619 spin_lock(&obd->obd_nid_lock);
1620 list_add(&new_ns_uuid->ns_uuid_list, &new_stat->nid_uuid_list);
1621 spin_unlock(&obd->obd_nid_lock);
1623 entry = lprocfs_add_simple(new_stat->nid_proc, "uuid",
1624 lprocfs_exp_rd_uuid, NULL, new_stat, NULL);
1625 if (IS_ERR(entry)) {
1626 CWARN("Error adding the NID stats file\n");
1627 rc = PTR_ERR(entry);
1630 entry = lprocfs_add_simple(new_stat->nid_proc, "hash",
1631 lprocfs_exp_rd_hash, NULL, new_stat, NULL);
1632 if (IS_ERR(entry)) {
1633 CWARN("Error adding the hash file\n");
1634 rc = PTR_ERR(entry);
1637 exp->exp_nid_stats = new_stat;
1642 spin_lock(&obd->obd_nid_lock);
1643 list_del(&new_stat->nid_list);
1644 spin_unlock(&obd->obd_nid_lock);
1645 OBD_FREE(new_stat, sizeof(struct nid_stat));
1649 int lprocfs_exp_cleanup(struct obd_export *exp)
1651 struct nid_stat *stat = exp->exp_nid_stats;
1652 struct nid_stat_uuid *cursor, *tmp;
1655 if(!stat || !exp->exp_obd)
1658 spin_lock(&exp->exp_obd->obd_nid_lock);
1659 list_for_each_entry_safe(cursor, tmp,
1660 &stat->nid_uuid_list,
1662 if (cursor && obd_uuid_equals(&cursor->ns_uuid,
1663 &exp->exp_client_uuid)) {
1665 list_del(&cursor->ns_uuid_list);
1666 OBD_FREE(cursor, sizeof(struct nid_stat_uuid));
1670 spin_unlock(&exp->exp_obd->obd_nid_lock);
1672 CERROR("obd_export's client uuid %s are not found in its "
1673 "nid_stats list\n", exp->exp_client_uuid.uuid);
1675 stat->nid_exp_ref_count--;
1676 CDEBUG(D_INFO, "Put stat %p - %d\n", stat, stat->nid_exp_ref_count);
1678 exp->exp_nid_stats = NULL;
1679 lprocfs_free_md_stats(exp->exp_obd);
1684 int lprocfs_write_helper(const char *buffer, unsigned long count,
1687 return lprocfs_write_frac_helper(buffer, count, val, 1);
1690 int lprocfs_write_frac_helper(const char *buffer, unsigned long count,
1693 char kernbuf[20], *end, *pbuf;
1695 if (count > (sizeof(kernbuf) - 1))
1698 if (copy_from_user(kernbuf, buffer, count))
1701 kernbuf[count] = '\0';
1708 *val = (int)simple_strtoul(pbuf, &end, 10) * mult;
1712 if (end != NULL && *end == '.') {
1713 int temp_val, pow = 1;
1717 if (strlen(pbuf) > 5)
1718 pbuf[5] = '\0'; /*only allow 5bits fractional*/
1720 temp_val = (int)simple_strtoul(pbuf, &end, 10) * mult;
1723 for (i = 0; i < (end - pbuf); i++)
1726 *val += temp_val / pow;
1732 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val, int mult)
1734 long decimal_val, frac_val;
1740 decimal_val = val / mult;
1741 prtn = snprintf(buffer, count, "%ld", decimal_val);
1742 frac_val = val % mult;
1744 if (prtn < (count - 4) && frac_val > 0) {
1746 int i, temp_mult = 1, frac_bits = 0;
1748 temp_frac = frac_val * 10;
1749 buffer[prtn++] = '.';
1750 while (frac_bits < 2 && (temp_frac / mult) < 1 ) { /*only reserved 2bits fraction*/
1751 buffer[prtn++] ='0';
1756 Need to think these cases :
1757 1. #echo x.00 > /proc/xxx output result : x
1758 2. #echo x.0x > /proc/xxx output result : x.0x
1759 3. #echo x.x0 > /proc/xxx output result : x.x
1760 4. #echo x.xx > /proc/xxx output result : x.xx
1761 Only reserved 2bits fraction.
1763 for (i = 0; i < (5 - prtn); i++)
1766 frac_bits = min((int)count - prtn, 3 - frac_bits);
1767 prtn += snprintf(buffer + prtn, frac_bits, "%ld", frac_val * temp_mult / mult);
1770 while(buffer[prtn] < '1' || buffer[prtn] > '9') {
1772 if (buffer[prtn] == '.') {
1779 buffer[prtn++] ='\n';
1783 int lprocfs_write_u64_helper(const char *buffer, unsigned long count,__u64 *val)
1785 return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
1788 int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
1789 __u64 *val, int mult)
1791 char kernbuf[22], *end, *pbuf;
1792 __u64 whole, frac = 0, units;
1793 unsigned frac_d = 1;
1795 if (count > (sizeof(kernbuf) - 1) )
1798 if (copy_from_user(kernbuf, buffer, count))
1801 kernbuf[count] = '\0';
1808 whole = simple_strtoull(pbuf, &end, 10);
1812 if (end != NULL && *end == '.') {
1816 /* need to limit frac_d to a __u32 */
1817 if (strlen(pbuf) > 10)
1820 frac = simple_strtoull(pbuf, &end, 10);
1821 /* count decimal places */
1822 for (i = 0; i < (end - pbuf); i++)
1839 /* Specified units override the multiplier */
1841 mult = mult < 0 ? -units : units;
1844 do_div(frac, frac_d);
1845 *val = whole * mult + frac;
1849 int lprocfs_seq_create(cfs_proc_dir_entry_t *parent,
1850 char *name, mode_t mode,
1851 struct file_operations *seq_fops, void *data)
1853 struct proc_dir_entry *entry;
1856 entry = create_proc_entry(name, mode, parent);
1859 entry->proc_fops = seq_fops;
1864 EXPORT_SYMBOL(lprocfs_seq_create);
1866 __inline__ int lprocfs_obd_seq_create(struct obd_device *dev, char *name,
1868 struct file_operations *seq_fops,
1871 return (lprocfs_seq_create(dev->obd_proc_entry, name,
1872 mode, seq_fops, data));
1874 EXPORT_SYMBOL(lprocfs_obd_seq_create);
1876 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
1878 if (value >= OBD_HIST_MAX)
1879 value = OBD_HIST_MAX - 1;
1881 spin_lock(&oh->oh_lock);
1882 oh->oh_buckets[value]++;
1883 spin_unlock(&oh->oh_lock);
1885 EXPORT_SYMBOL(lprocfs_oh_tally);
1887 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
1891 for (val = 0; ((1 << val) < value) && (val <= OBD_HIST_MAX); val++)
1894 lprocfs_oh_tally(oh, val);
1896 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
1898 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
1900 unsigned long ret = 0;
1903 for (i = 0; i < OBD_HIST_MAX; i++)
1904 ret += oh->oh_buckets[i];
1907 EXPORT_SYMBOL(lprocfs_oh_sum);
1909 void lprocfs_oh_clear(struct obd_histogram *oh)
1911 spin_lock(&oh->oh_lock);
1912 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
1913 spin_unlock(&oh->oh_lock);
1915 EXPORT_SYMBOL(lprocfs_oh_clear);
1917 int lprocfs_obd_rd_hash(char *page, char **start, off_t off,
1918 int count, int *eof, void *data)
1920 struct obd_device *obd = data;
1926 c += lustre_hash_debug_header(page, count);
1927 c += lustre_hash_debug_str(obd->obd_uuid_hash, page + c, count - c);
1928 c += lustre_hash_debug_str(obd->obd_nid_hash, page + c, count - c);
1929 c += lustre_hash_debug_str(obd->obd_nid_stats_hash, page+c, count-c);
1933 EXPORT_SYMBOL(lprocfs_obd_rd_hash);
1935 int lprocfs_obd_rd_recovery_status(char *page, char **start, off_t off,
1936 int count, int *eof, void *data)
1938 struct obd_device *obd = data;
1941 LASSERT(obd != NULL);
1942 LASSERT(count >= 0);
1944 /* Set start of user data returned to
1945 page + off since the user may have
1946 requested to read much smaller than
1947 what we need to read */
1948 *start = page + off;
1950 /* We know we are allocated a page here.
1951 Also we know that this function will
1952 not need to write more than a page
1953 so we can truncate at CFS_PAGE_SIZE. */
1954 size = min(count + (int)off + 1, (int)CFS_PAGE_SIZE);
1956 /* Initialize the page */
1957 memset(page, 0, size);
1959 if (lprocfs_obd_snprintf(&page, size, &len, "status: ") <= 0)
1961 if (obd->obd_max_recoverable_clients == 0) {
1962 if (lprocfs_obd_snprintf(&page, size, &len, "INACTIVE\n") <= 0)
1968 /* sampled unlocked, but really... */
1969 if (obd->obd_recovering == 0) {
1970 if (lprocfs_obd_snprintf(&page, size, &len, "COMPLETE\n") <= 0)
1972 if (lprocfs_obd_snprintf(&page, size, &len,
1973 "recovery_start: %lu\n",
1974 obd->obd_recovery_start) <= 0)
1976 if (lprocfs_obd_snprintf(&page, size, &len,
1977 "recovery_duration: %lu\n",
1978 obd->obd_recovery_end -
1979 obd->obd_recovery_start) <= 0)
1981 /* Number of clients that have completed recovery */
1982 if (lprocfs_obd_snprintf(&page, size, &len,
1983 "completed_clients: %d/%d\n",
1984 obd->obd_max_recoverable_clients -
1985 obd->obd_recoverable_clients,
1986 obd->obd_max_recoverable_clients) <= 0)
1988 if (lprocfs_obd_snprintf(&page, size, &len,
1989 "replayed_requests: %d\n",
1990 obd->obd_replayed_requests) <= 0)
1992 if (lprocfs_obd_snprintf(&page, size, &len,
1993 "last_transno: "LPD64"\n",
1994 obd->obd_next_recovery_transno - 1)<=0)
1999 if (lprocfs_obd_snprintf(&page, size, &len, "RECOVERING\n") <= 0)
2001 if (lprocfs_obd_snprintf(&page, size, &len, "recovery_start: %lu\n",
2002 obd->obd_recovery_start) <= 0)
2004 if (lprocfs_obd_snprintf(&page, size, &len, "time_remaining: %lu\n",
2005 cfs_time_current_sec() >= obd->obd_recovery_end ? 0 :
2006 obd->obd_recovery_end - cfs_time_current_sec()) <= 0)
2008 if (lprocfs_obd_snprintf(&page, size, &len,"connected_clients: %d/%d\n",
2009 obd->obd_connected_clients,
2010 obd->obd_max_recoverable_clients) <= 0)
2012 /* Number of clients that have completed recovery */
2013 if (lprocfs_obd_snprintf(&page, size, &len,"completed_clients: %d/%d\n",
2014 obd->obd_max_recoverable_clients -
2015 obd->obd_recoverable_clients,
2016 obd->obd_max_recoverable_clients) <= 0)
2018 if (lprocfs_obd_snprintf(&page, size, &len,"replayed_requests: %d/??\n",
2019 obd->obd_replayed_requests) <= 0)
2021 if (lprocfs_obd_snprintf(&page, size, &len, "queued_requests: %d\n",
2022 obd->obd_requests_queued_for_recovery) <= 0)
2025 if (lprocfs_obd_snprintf(&page, size, &len, "next_transno: "LPD64"\n",
2026 obd->obd_next_recovery_transno) <= 0)
2032 return min(count, len - (int)off);
2034 EXPORT_SYMBOL(lprocfs_obd_rd_recovery_status);
2036 int lprocfs_obd_rd_recovery_maxtime(char *page, char **start, off_t off,
2037 int count, int *eof, void *data)
2039 struct obd_device *obd = (struct obd_device *)data;
2040 LASSERT(obd != NULL);
2042 return snprintf(page, count, "%lu\n",
2043 obd->obd_recovery_max_time);
2045 EXPORT_SYMBOL(lprocfs_obd_rd_recovery_maxtime);
2047 int lprocfs_obd_wr_recovery_maxtime(struct file *file, const char *buffer,
2048 unsigned long count, void *data)
2050 struct obd_device *obd = (struct obd_device *)data;
2052 LASSERT(obd != NULL);
2054 rc = lprocfs_write_helper(buffer, count, &val);
2058 obd->obd_recovery_max_time = val;
2061 EXPORT_SYMBOL(lprocfs_obd_wr_recovery_maxtime);
2063 EXPORT_SYMBOL(lprocfs_register);
2064 EXPORT_SYMBOL(lprocfs_srch);
2065 EXPORT_SYMBOL(lprocfs_remove);
2066 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
2067 EXPORT_SYMBOL(lprocfs_add_vars);
2068 EXPORT_SYMBOL(lprocfs_obd_setup);
2069 EXPORT_SYMBOL(lprocfs_obd_cleanup);
2070 EXPORT_SYMBOL(lprocfs_add_simple);
2071 EXPORT_SYMBOL(lprocfs_add_symlink);
2072 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
2073 EXPORT_SYMBOL(lprocfs_alloc_stats);
2074 EXPORT_SYMBOL(lprocfs_free_stats);
2075 EXPORT_SYMBOL(lprocfs_clear_stats);
2076 EXPORT_SYMBOL(lprocfs_register_stats);
2077 EXPORT_SYMBOL(lprocfs_init_ops_stats);
2078 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
2079 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
2080 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
2081 EXPORT_SYMBOL(lprocfs_free_obd_stats);
2082 EXPORT_SYMBOL(lprocfs_exp_setup);
2083 EXPORT_SYMBOL(lprocfs_exp_cleanup);
2085 EXPORT_SYMBOL(lprocfs_rd_u64);
2086 EXPORT_SYMBOL(lprocfs_rd_atomic);
2087 EXPORT_SYMBOL(lprocfs_wr_atomic);
2088 EXPORT_SYMBOL(lprocfs_rd_uint);
2089 EXPORT_SYMBOL(lprocfs_wr_uint);
2090 EXPORT_SYMBOL(lprocfs_rd_uuid);
2091 EXPORT_SYMBOL(lprocfs_rd_name);
2092 EXPORT_SYMBOL(lprocfs_rd_fstype);
2093 EXPORT_SYMBOL(lprocfs_rd_server_uuid);
2094 EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
2095 EXPORT_SYMBOL(lprocfs_rd_num_exports);
2096 EXPORT_SYMBOL(lprocfs_rd_numrefs);
2097 EXPORT_SYMBOL(lprocfs_at_hist_helper);
2098 EXPORT_SYMBOL(lprocfs_rd_timeouts);
2099 EXPORT_SYMBOL(lprocfs_rd_blksize);
2100 EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
2101 EXPORT_SYMBOL(lprocfs_rd_kbytesfree);
2102 EXPORT_SYMBOL(lprocfs_rd_kbytesavail);
2103 EXPORT_SYMBOL(lprocfs_rd_filestotal);
2104 EXPORT_SYMBOL(lprocfs_rd_filesfree);
2106 EXPORT_SYMBOL(lprocfs_write_helper);
2107 EXPORT_SYMBOL(lprocfs_write_frac_helper);
2108 EXPORT_SYMBOL(lprocfs_read_frac_helper);
2109 EXPORT_SYMBOL(lprocfs_write_u64_helper);
2110 EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);