4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/obdclass/lprocfs_status.c
34 * Author: Hariharan Thantry <thantry@users.sourceforge.net>
37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <obd_class.h>
40 #include <lprocfs_status.h>
44 static int lprocfs_no_percpu_stats = 0;
45 module_param(lprocfs_no_percpu_stats, int, 0644);
46 MODULE_PARM_DESC(lprocfs_no_percpu_stats, "Do not alloc percpu data for lprocfs stats");
48 #define MAX_STRING_SIZE 128
50 int lprocfs_single_release(struct inode *inode, struct file *file)
52 return single_release(inode, file);
54 EXPORT_SYMBOL(lprocfs_single_release);
56 int lprocfs_seq_release(struct inode *inode, struct file *file)
58 return seq_release(inode, file);
60 EXPORT_SYMBOL(lprocfs_seq_release);
62 struct dentry *ldebugfs_add_simple(struct dentry *root,
63 char *name, void *data,
64 const struct file_operations *fops)
69 if (!root || !name || !fops)
70 return ERR_PTR(-EINVAL);
76 entry = debugfs_create_file(name, mode, root, data, fops);
77 if (IS_ERR_OR_NULL(entry)) {
78 CERROR("LprocFS: No memory to create <debugfs> entry %s", name);
79 return entry ?: ERR_PTR(-ENOMEM);
83 EXPORT_SYMBOL(ldebugfs_add_simple);
85 struct proc_dir_entry *
86 lprocfs_add_simple(struct proc_dir_entry *root, char *name,
87 void *data, const struct file_operations *fops)
89 struct proc_dir_entry *proc;
92 if (!root || !name || !fops)
93 return ERR_PTR(-EINVAL);
99 proc = proc_create_data(name, mode, root, fops, data);
101 CERROR("LprocFS: No memory to create /proc entry %s\n",
103 return ERR_PTR(-ENOMEM);
107 EXPORT_SYMBOL(lprocfs_add_simple);
109 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
110 struct proc_dir_entry *parent,
111 const char *format, ...)
113 struct proc_dir_entry *entry;
117 if (!parent || !format)
120 OBD_ALLOC_WAIT(dest, MAX_STRING_SIZE + 1);
124 va_start(ap, format);
125 vsnprintf(dest, MAX_STRING_SIZE, format, ap);
128 entry = proc_symlink(name, parent, dest);
130 CERROR("LprocFS: Could not create symbolic link from "
131 "%s to %s\n", name, dest);
133 OBD_FREE(dest, MAX_STRING_SIZE + 1);
136 EXPORT_SYMBOL(lprocfs_add_symlink);
138 static const struct file_operations lprocfs_generic_fops = { };
140 int ldebugfs_add_vars(struct dentry *parent, struct lprocfs_vars *list,
143 if (IS_ERR_OR_NULL(parent) || IS_ERR_OR_NULL(list))
147 struct dentry *entry;
150 if (list->proc_mode != 0000) {
151 mode = list->proc_mode;
152 } else if (list->fops) {
153 if (list->fops->read)
155 if (list->fops->write)
158 entry = debugfs_create_file(list->name, mode, parent,
160 list->fops ? : &lprocfs_generic_fops);
161 if (IS_ERR_OR_NULL(entry))
162 return entry ? PTR_ERR(entry) : -ENOMEM;
167 EXPORT_SYMBOL_GPL(ldebugfs_add_vars);
172 * \param root [in] The parent proc entry on which new entry will be added.
173 * \param list [in] Array of proc entries to be added.
174 * \param data [in] The argument to be passed when entries read/write routines
175 * are called through /proc file.
177 * \retval 0 on success
181 lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
188 struct proc_dir_entry *proc;
191 if (list->proc_mode != 0000) {
192 mode = list->proc_mode;
193 } else if (list->fops) {
194 if (list->fops->read)
196 if (list->fops->write)
199 proc = proc_create_data(list->name, mode, root,
200 list->fops ?: &lprocfs_generic_fops,
208 EXPORT_SYMBOL(lprocfs_add_vars);
210 void ldebugfs_remove(struct dentry **entryp)
212 debugfs_remove_recursive(*entryp);
215 EXPORT_SYMBOL_GPL(ldebugfs_remove);
217 #ifndef HAVE_REMOVE_PROC_SUBTREE
218 /* for b=10866, global variable */
219 DECLARE_RWSEM(_lprocfs_lock);
220 EXPORT_SYMBOL(_lprocfs_lock);
222 static void lprocfs_remove_nolock(struct proc_dir_entry **proot)
224 struct proc_dir_entry *root = *proot;
225 struct proc_dir_entry *temp = root;
226 struct proc_dir_entry *rm_entry;
227 struct proc_dir_entry *parent;
230 if (!root || IS_ERR(root))
233 parent = root->parent;
234 LASSERT(parent != NULL);
244 * Memory corruption once caused this to fail, and
245 * without this LASSERT we would loop here forever.
247 LASSERTF(strlen(rm_entry->name) == rm_entry->namelen,
248 "0x%p %s/%s len %d\n", rm_entry, temp->name,
249 rm_entry->name, (int)strlen(rm_entry->name));
251 remove_proc_entry(rm_entry->name, temp);
257 int remove_proc_subtree(const char *name, struct proc_dir_entry *parent)
259 struct proc_dir_entry *t = NULL;
260 struct proc_dir_entry **p;
263 LASSERT(parent != NULL);
266 down_write(&_lprocfs_lock);
267 /* lookup target name */
268 for (p = &parent->subdir; *p; p = &(*p)->next) {
269 if ((*p)->namelen != len)
271 if (memcmp(name, (*p)->name, len))
278 /* verify it's empty: do not count "num_refs" */
279 for (p = &t->subdir; *p; p = &(*p)->next) {
280 if ((*p)->namelen != strlen("num_refs")) {
284 if (memcmp("num_refs", (*p)->name,
285 strlen("num_refs"))) {
293 lprocfs_remove_nolock(&t);
295 up_write(&_lprocfs_lock);
298 #endif /* !HAVE_REMOVE_PROC_SUBTREE */
300 #ifndef HAVE_PROC_REMOVE
301 void proc_remove(struct proc_dir_entry *de)
303 #ifndef HAVE_REMOVE_PROC_SUBTREE
304 down_write(&_lprocfs_lock); /* search vs remove race */
305 lprocfs_remove_nolock(&de);
306 up_write(&_lprocfs_lock);
309 remove_proc_subtree(de->name, de->parent);
314 void lprocfs_remove(struct proc_dir_entry **rooth)
319 EXPORT_SYMBOL(lprocfs_remove);
321 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
323 LASSERT(parent != NULL);
324 remove_proc_entry(name, parent);
326 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
328 struct dentry *ldebugfs_register(const char *name, struct dentry *parent,
329 struct lprocfs_vars *list, void *data)
331 struct dentry *entry;
333 entry = debugfs_create_dir(name, parent);
334 if (IS_ERR_OR_NULL(entry)) {
335 entry = entry ?: ERR_PTR(-ENOMEM);
339 if (!IS_ERR_OR_NULL(list)) {
342 rc = ldebugfs_add_vars(entry, list, data);
344 debugfs_remove(entry);
351 EXPORT_SYMBOL_GPL(ldebugfs_register);
353 struct proc_dir_entry *
354 lprocfs_register(const char *name, struct proc_dir_entry *parent,
355 struct lprocfs_vars *list, void *data)
357 struct proc_dir_entry *newchild;
359 newchild = proc_mkdir(name, parent);
361 return ERR_PTR(-ENOMEM);
364 int rc = lprocfs_add_vars(newchild, list, data);
366 lprocfs_remove(&newchild);
372 EXPORT_SYMBOL(lprocfs_register);
374 /* Generic callbacks */
375 int lprocfs_uuid_seq_show(struct seq_file *m, void *data)
377 struct obd_device *obd = data;
379 LASSERT(obd != NULL);
380 seq_printf(m, "%s\n", obd->obd_uuid.uuid);
383 EXPORT_SYMBOL(lprocfs_uuid_seq_show);
385 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
388 struct obd_device *obd = container_of(kobj, struct obd_device,
391 return sprintf(buf, "%s\n", obd->obd_uuid.uuid);
393 LUSTRE_RO_ATTR(uuid);
395 static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
398 struct obd_device *obd = container_of(kobj, struct obd_device,
400 struct obd_statfs osfs;
403 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
404 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
407 return sprintf(buf, "%u\n", osfs.os_bsize);
411 LUSTRE_RO_ATTR(blocksize);
413 static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
416 struct obd_device *obd = container_of(kobj, struct obd_device,
418 struct obd_statfs osfs;
421 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
422 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
425 u32 blk_size = osfs.os_bsize >> 10;
426 u64 result = osfs.os_blocks;
428 while (blk_size >>= 1)
431 return sprintf(buf, "%llu\n", result);
436 LUSTRE_RO_ATTR(kbytestotal);
438 static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
441 struct obd_device *obd = container_of(kobj, struct obd_device,
443 struct obd_statfs osfs;
446 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
447 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
450 u32 blk_size = osfs.os_bsize >> 10;
451 u64 result = osfs.os_bfree;
453 while (blk_size >>= 1)
456 return sprintf(buf, "%llu\n", result);
461 LUSTRE_RO_ATTR(kbytesfree);
463 static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
466 struct obd_device *obd = container_of(kobj, struct obd_device,
468 struct obd_statfs osfs;
471 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
472 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
475 u32 blk_size = osfs.os_bsize >> 10;
476 u64 result = osfs.os_bavail;
478 while (blk_size >>= 1)
481 return sprintf(buf, "%llu\n", result);
486 LUSTRE_RO_ATTR(kbytesavail);
488 static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
491 struct obd_device *obd = container_of(kobj, struct obd_device,
493 struct obd_statfs osfs;
496 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
497 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
500 return sprintf(buf, "%llu\n", osfs.os_files);
504 LUSTRE_RO_ATTR(filestotal);
506 static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
509 struct obd_device *obd = container_of(kobj, struct obd_device,
511 struct obd_statfs osfs;
514 rc = obd_statfs(NULL, obd->obd_self_export, &osfs,
515 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
518 return sprintf(buf, "%llu\n", osfs.os_ffree);
522 LUSTRE_RO_ATTR(filesfree);
524 ssize_t conn_uuid_show(struct kobject *kobj, struct attribute *attr, char *buf)
526 struct obd_device *obd = container_of(kobj, struct obd_device,
528 struct ptlrpc_connection *conn;
531 LPROCFS_CLIMP_CHECK(obd);
532 conn = obd->u.cli.cl_import->imp_connection;
533 if (conn && obd->u.cli.cl_import)
534 count = sprintf(buf, "%s\n", conn->c_remote_uuid.uuid);
536 count = sprintf(buf, "%s\n", "<none>");
538 LPROCFS_CLIMP_EXIT(obd);
541 EXPORT_SYMBOL(conn_uuid_show);
543 int lprocfs_server_uuid_seq_show(struct seq_file *m, void *data)
545 struct obd_device *obd = data;
546 struct obd_import *imp;
547 char *imp_state_name = NULL;
550 LASSERT(obd != NULL);
551 LPROCFS_CLIMP_CHECK(obd);
552 imp = obd->u.cli.cl_import;
553 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
554 seq_printf(m, "%s\t%s%s\n", obd2cli_tgt(obd), imp_state_name,
555 imp->imp_deactive ? "\tDEACTIVATED" : "");
557 LPROCFS_CLIMP_EXIT(obd);
560 EXPORT_SYMBOL(lprocfs_server_uuid_seq_show);
562 /** add up per-cpu counters */
565 * Lock statistics structure for access, possibly only on this CPU.
567 * The statistics struct may be allocated with per-CPU structures for
568 * efficient concurrent update (usually only on server-wide stats), or
569 * as a single global struct (e.g. for per-client or per-job statistics),
570 * so the required locking depends on the type of structure allocated.
572 * For per-CPU statistics, pin the thread to the current cpuid so that
573 * will only access the statistics for that CPU. If the stats structure
574 * for the current CPU has not been allocated (or previously freed),
575 * allocate it now. The per-CPU statistics do not need locking since
576 * the thread is pinned to the CPU during update.
578 * For global statistics, lock the stats structure to prevent concurrent update.
580 * \param[in] stats statistics structure to lock
581 * \param[in] opc type of operation:
582 * LPROCFS_GET_SMP_ID: "lock" and return current CPU index
583 * for incrementing statistics for that CPU
584 * LPROCFS_GET_NUM_CPU: "lock" and return number of used
585 * CPU indices to iterate over all indices
586 * \param[out] flags CPU interrupt saved state for IRQ-safe locking
588 * \retval cpuid of current thread or number of allocated structs
589 * \retval negative on error (only for opc LPROCFS_GET_SMP_ID + per-CPU stats)
591 int lprocfs_stats_lock(struct lprocfs_stats *stats,
592 enum lprocfs_stats_lock_ops opc,
593 unsigned long *flags)
595 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
596 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
597 spin_lock_irqsave(&stats->ls_lock, *flags);
599 spin_lock(&stats->ls_lock);
600 return opc == LPROCFS_GET_NUM_CPU ? 1 : 0;
604 case LPROCFS_GET_SMP_ID: {
605 unsigned int cpuid = get_cpu();
607 if (unlikely(!stats->ls_percpu[cpuid])) {
608 int rc = lprocfs_stats_alloc_one(stats, cpuid);
617 case LPROCFS_GET_NUM_CPU:
618 return stats->ls_biggest_alloc_num;
625 * Unlock statistics structure after access.
627 * Unlock the lock acquired via lprocfs_stats_lock() for global statistics,
628 * or unpin this thread from the current cpuid for per-CPU statistics.
630 * This function must be called using the same arguments as used when calling
631 * lprocfs_stats_lock() so that the correct operation can be performed.
633 * \param[in] stats statistics structure to unlock
634 * \param[in] opc type of operation (current cpuid or number of structs)
635 * \param[in] flags CPU interrupt saved state for IRQ-safe locking
637 void lprocfs_stats_unlock(struct lprocfs_stats *stats,
638 enum lprocfs_stats_lock_ops opc,
639 unsigned long *flags)
641 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) {
642 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
643 spin_unlock_irqrestore(&stats->ls_lock, *flags);
645 spin_unlock(&stats->ls_lock);
646 } else if (opc == LPROCFS_GET_SMP_ID) {
651 /** add up per-cpu counters */
652 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
653 struct lprocfs_counter *cnt)
655 unsigned int num_entry;
656 struct lprocfs_counter *percpu_cntr;
658 unsigned long flags = 0;
660 memset(cnt, 0, sizeof(*cnt));
663 /* set count to 1 to avoid divide-by-zero errs in callers */
668 cnt->lc_min = LC_MIN_INIT;
670 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
672 for (i = 0; i < num_entry; i++) {
673 if (!stats->ls_percpu[i])
675 percpu_cntr = lprocfs_stats_counter_get(stats, i, idx);
677 cnt->lc_count += percpu_cntr->lc_count;
678 cnt->lc_sum += percpu_cntr->lc_sum;
679 if (percpu_cntr->lc_min < cnt->lc_min)
680 cnt->lc_min = percpu_cntr->lc_min;
681 if (percpu_cntr->lc_max > cnt->lc_max)
682 cnt->lc_max = percpu_cntr->lc_max;
683 cnt->lc_sumsquare += percpu_cntr->lc_sumsquare;
686 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
689 static void obd_import_flags2str(struct obd_import *imp, struct seq_file *m)
693 if (imp->imp_obd->obd_no_recov) {
694 seq_printf(m, "no_recov");
698 flag2str(imp, invalid);
699 flag2str(imp, deactive);
700 flag2str(imp, replayable);
701 flag2str(imp, delayed_recovery);
702 flag2str(imp, vbr_failed);
703 flag2str(imp, pingable);
704 flag2str(imp, resend_replay);
705 flag2str(imp, no_pinger_recover);
706 flag2str(imp, connect_tried);
709 static const char *obd_connect_names[] = {
728 "remote_client_by_force",
737 "mds_mds_connection",
740 "alt_checksum_algorithm",
776 "file_secctx", /* 0x01 */
777 "lockaheadv2", /* 0x02 */
778 "dir_migrate", /* 0x04 */
779 "unknown", /* 0x08 */
780 "unknown", /* 0x10 */
783 "lock_convert", /* 0x80 */
784 "archive_id_array", /* 0x100 */
785 "selinux_policy", /* 0x200 */
789 void obd_connect_seq_flags2str(struct seq_file *m, __u64 flags, __u64 flags2,
796 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
798 seq_printf(m, "%s%s",
799 first ? "" : sep, obd_connect_names[i]);
804 if (flags & ~(mask - 1)) {
805 seq_printf(m, "%sunknown_%#llx",
806 first ? "" : sep, flags & ~(mask - 1));
810 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
813 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
815 seq_printf(m, "%s%s",
816 first ? "" : sep, obd_connect_names[i]);
821 if (flags2 & ~(mask - 1)) {
822 seq_printf(m, "%sunknown2_%#llx",
823 first ? "" : sep, flags2 & ~(mask - 1));
827 EXPORT_SYMBOL(obd_connect_seq_flags2str);
829 int obd_connect_flags2str(char *page, int count, __u64 flags, __u64 flags2,
835 for (i = 0, mask = 1; i < 64; i++, mask <<= 1) {
837 ret += snprintf(page + ret, count - ret, "%s%s",
838 ret ? sep : "", obd_connect_names[i]);
841 if (flags & ~(mask - 1))
842 ret += snprintf(page + ret, count - ret,
844 ret ? sep : "", flags & ~(mask - 1));
846 if (!(flags & OBD_CONNECT_FLAGS2) || flags2 == 0)
849 for (i = 64, mask = 1; obd_connect_names[i] != NULL; i++, mask <<= 1) {
851 ret += snprintf(page + ret, count - ret, "%s%s",
852 ret ? sep : "", obd_connect_names[i]);
855 if (flags2 & ~(mask - 1))
856 ret += snprintf(page + ret, count - ret,
858 ret ? sep : "", flags2 & ~(mask - 1));
862 EXPORT_SYMBOL(obd_connect_flags2str);
865 obd_connect_data_seqprint(struct seq_file *m, struct obd_connect_data *ocd)
869 LASSERT(ocd != NULL);
870 flags = ocd->ocd_connect_flags;
872 seq_printf(m, " connect_data:\n"
875 ocd->ocd_connect_flags,
877 if (flags & OBD_CONNECT_VERSION)
878 seq_printf(m, " target_version: %u.%u.%u.%u\n",
879 OBD_OCD_VERSION_MAJOR(ocd->ocd_version),
880 OBD_OCD_VERSION_MINOR(ocd->ocd_version),
881 OBD_OCD_VERSION_PATCH(ocd->ocd_version),
882 OBD_OCD_VERSION_FIX(ocd->ocd_version));
883 if (flags & OBD_CONNECT_MDS)
884 seq_printf(m, " mdt_index: %d\n", ocd->ocd_group);
885 if (flags & OBD_CONNECT_GRANT)
886 seq_printf(m, " initial_grant: %d\n", ocd->ocd_grant);
887 if (flags & OBD_CONNECT_INDEX)
888 seq_printf(m, " target_index: %u\n", ocd->ocd_index);
889 if (flags & OBD_CONNECT_BRW_SIZE)
890 seq_printf(m, " max_brw_size: %d\n", ocd->ocd_brw_size);
891 if (flags & OBD_CONNECT_IBITS)
892 seq_printf(m, " ibits_known: %#llx\n",
893 ocd->ocd_ibits_known);
894 if (flags & OBD_CONNECT_GRANT_PARAM)
895 seq_printf(m, " grant_block_size: %d\n"
896 " grant_inode_size: %d\n"
897 " grant_max_extent_size: %d\n"
898 " grant_extent_tax: %d\n",
899 1 << ocd->ocd_grant_blkbits,
900 1 << ocd->ocd_grant_inobits,
901 ocd->ocd_grant_max_blks << ocd->ocd_grant_blkbits,
902 ocd->ocd_grant_tax_kb << 10);
903 if (flags & OBD_CONNECT_TRANSNO)
904 seq_printf(m, " first_transno: %#llx\n",
906 if (flags & OBD_CONNECT_CKSUM)
907 seq_printf(m, " cksum_types: %#x\n",
908 ocd->ocd_cksum_types);
909 if (flags & OBD_CONNECT_MAX_EASIZE)
910 seq_printf(m, " max_easize: %d\n", ocd->ocd_max_easize);
911 if (flags & OBD_CONNECT_MAXBYTES)
912 seq_printf(m, " max_object_bytes: %llu\n",
914 if (flags & OBD_CONNECT_MULTIMODRPCS)
915 seq_printf(m, " max_mod_rpcs: %hu\n",
916 ocd->ocd_maxmodrpcs);
919 int lprocfs_import_seq_show(struct seq_file *m, void *data)
921 char nidstr[LNET_NIDSTR_SIZE];
922 struct lprocfs_counter ret;
923 struct lprocfs_counter_header *header;
924 struct obd_device *obd = (struct obd_device *)data;
925 struct obd_import *imp;
926 struct obd_import_conn *conn;
927 struct obd_connect_data *ocd;
932 LASSERT(obd != NULL);
933 LPROCFS_CLIMP_CHECK(obd);
934 imp = obd->u.cli.cl_import;
935 ocd = &imp->imp_connect_data;
937 seq_printf(m, "import:\n"
941 " connect_flags: [ ",
944 ptlrpc_import_state_name(imp->imp_state));
945 obd_connect_seq_flags2str(m, imp->imp_connect_data.ocd_connect_flags,
946 imp->imp_connect_data.ocd_connect_flags2,
948 seq_printf(m, " ]\n");
949 obd_connect_data_seqprint(m, ocd);
950 seq_printf(m, " import_flags: [ ");
951 obd_import_flags2str(imp, m);
955 " failover_nids: [ ");
956 spin_lock(&imp->imp_lock);
958 list_for_each_entry(conn, &imp->imp_conn_list, oic_item) {
959 libcfs_nid2str_r(conn->oic_conn->c_peer.nid,
960 nidstr, sizeof(nidstr));
961 seq_printf(m, "%s%s", j ? ", " : "", nidstr);
964 if (imp->imp_connection)
965 libcfs_nid2str_r(imp->imp_connection->c_peer.nid,
966 nidstr, sizeof(nidstr));
968 strncpy(nidstr, "<none>", sizeof(nidstr));
970 " current_connection: %s\n"
971 " connection_attempts: %u\n"
973 " in-progress_invalidations: %u\n"
978 atomic_read(&imp->imp_inval_count),
979 ktime_get_real_seconds() - imp->imp_last_reply_time);
980 spin_unlock(&imp->imp_lock);
982 if (!obd->obd_svc_stats)
985 header = &obd->obd_svc_stats->ls_cnt_header[PTLRPC_REQWAIT_CNTR];
986 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
987 if (ret.lc_count != 0) {
988 /* first argument to do_div MUST be __u64 */
989 __u64 sum = ret.lc_sum;
990 do_div(sum, ret.lc_count);
994 seq_printf(m, " rpcs:\n"
996 " unregistering: %u\n"
998 " avg_waittime: %llu %s\n",
999 atomic_read(&imp->imp_inflight),
1000 atomic_read(&imp->imp_unregistering),
1001 atomic_read(&imp->imp_timeouts),
1002 ret.lc_sum, header->lc_units);
1005 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
1006 if (imp->imp_at.iat_portal[j] == 0)
1008 k = max_t(unsigned int, k,
1009 at_get(&imp->imp_at.iat_service_estimate[j]));
1011 seq_printf(m, " service_estimates:\n"
1012 " services: %u sec\n"
1013 " network: %u sec\n",
1015 at_get(&imp->imp_at.iat_net_latency));
1017 seq_printf(m, " transactions:\n"
1018 " last_replay: %llu\n"
1019 " peer_committed: %llu\n"
1020 " last_checked: %llu\n",
1021 imp->imp_last_replay_transno,
1022 imp->imp_peer_committed_transno,
1023 imp->imp_last_transno_checked);
1025 /* avg data rates */
1026 for (rw = 0; rw <= 1; rw++) {
1027 lprocfs_stats_collect(obd->obd_svc_stats,
1028 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
1030 if (ret.lc_sum > 0 && ret.lc_count > 0) {
1031 /* first argument to do_div MUST be __u64 */
1032 __u64 sum = ret.lc_sum;
1033 do_div(sum, ret.lc_count);
1035 seq_printf(m, " %s_data_averages:\n"
1036 " bytes_per_rpc: %llu\n",
1037 rw ? "write" : "read",
1040 k = (int)ret.lc_sum;
1041 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
1042 header = &obd->obd_svc_stats->ls_cnt_header[j];
1043 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
1044 if (ret.lc_sum > 0 && ret.lc_count != 0) {
1045 /* first argument to do_div MUST be __u64 */
1046 __u64 sum = ret.lc_sum;
1047 do_div(sum, ret.lc_count);
1049 seq_printf(m, " %s_per_rpc: %llu\n",
1050 header->lc_units, ret.lc_sum);
1051 j = (int)ret.lc_sum;
1053 seq_printf(m, " MB_per_sec: %u.%.02u\n",
1054 k / j, (100 * k / j) % 100);
1059 LPROCFS_CLIMP_EXIT(obd);
1062 EXPORT_SYMBOL(lprocfs_import_seq_show);
1064 int lprocfs_state_seq_show(struct seq_file *m, void *data)
1066 struct obd_device *obd = (struct obd_device *)data;
1067 struct obd_import *imp;
1070 LASSERT(obd != NULL);
1071 LPROCFS_CLIMP_CHECK(obd);
1072 imp = obd->u.cli.cl_import;
1074 seq_printf(m, "current_state: %s\n",
1075 ptlrpc_import_state_name(imp->imp_state));
1076 seq_printf(m, "state_history:\n");
1077 k = imp->imp_state_hist_idx;
1078 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
1079 struct import_state_hist *ish =
1080 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
1081 if (ish->ish_state == 0)
1083 seq_printf(m, " - [ %lld, %s ]\n", (s64)ish->ish_time,
1084 ptlrpc_import_state_name(ish->ish_state));
1087 LPROCFS_CLIMP_EXIT(obd);
1090 EXPORT_SYMBOL(lprocfs_state_seq_show);
1092 int lprocfs_at_hist_helper(struct seq_file *m, struct adaptive_timeout *at)
1095 for (i = 0; i < AT_BINS; i++)
1096 seq_printf(m, "%3u ", at->at_hist[i]);
1097 seq_printf(m, "\n");
1100 EXPORT_SYMBOL(lprocfs_at_hist_helper);
1102 /* See also ptlrpc_lprocfs_timeouts_show_seq */
1103 int lprocfs_timeouts_seq_show(struct seq_file *m, void *data)
1105 struct obd_device *obd = (struct obd_device *)data;
1106 struct obd_import *imp;
1107 unsigned int cur, worst;
1108 time64_t now, worstt;
1111 LASSERT(obd != NULL);
1112 LPROCFS_CLIMP_CHECK(obd);
1113 imp = obd->u.cli.cl_import;
1115 now = ktime_get_real_seconds();
1117 /* Some network health info for kicks */
1118 seq_printf(m, "%-10s : %lld, %llds ago\n",
1119 "last reply", (s64)imp->imp_last_reply_time,
1120 (s64)(now - imp->imp_last_reply_time));
1122 cur = at_get(&imp->imp_at.iat_net_latency);
1123 worst = imp->imp_at.iat_net_latency.at_worst_ever;
1124 worstt = imp->imp_at.iat_net_latency.at_worst_time;
1125 seq_printf(m, "%-10s : cur %3u worst %3u (at %lld, %llds ago) ",
1126 "network", cur, worst, (s64)worstt, (s64)(now - worstt));
1127 lprocfs_at_hist_helper(m, &imp->imp_at.iat_net_latency);
1129 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
1130 if (imp->imp_at.iat_portal[i] == 0)
1132 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
1133 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
1134 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
1135 seq_printf(m, "portal %-2d : cur %3u worst %3u (at %lld, %llds ago) ",
1136 imp->imp_at.iat_portal[i], cur, worst, (s64)worstt,
1137 (s64)(now - worstt));
1138 lprocfs_at_hist_helper(m, &imp->imp_at.iat_service_estimate[i]);
1141 LPROCFS_CLIMP_EXIT(obd);
1144 EXPORT_SYMBOL(lprocfs_timeouts_seq_show);
1146 int lprocfs_connect_flags_seq_show(struct seq_file *m, void *data)
1148 struct obd_device *obd = data;
1152 LPROCFS_CLIMP_CHECK(obd);
1153 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
1154 flags2 = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags2;
1155 seq_printf(m, "flags=%#llx\n", flags);
1156 seq_printf(m, "flags2=%#llx\n", flags2);
1157 obd_connect_seq_flags2str(m, flags, flags2, "\n");
1158 seq_printf(m, "\n");
1159 LPROCFS_CLIMP_EXIT(obd);
1162 EXPORT_SYMBOL(lprocfs_connect_flags_seq_show);
1164 static const struct attribute *obd_def_uuid_attrs[] = {
1165 &lustre_attr_uuid.attr,
1169 static const struct attribute *obd_def_attrs[] = {
1170 &lustre_attr_blocksize.attr,
1171 &lustre_attr_kbytestotal.attr,
1172 &lustre_attr_kbytesfree.attr,
1173 &lustre_attr_kbytesavail.attr,
1174 &lustre_attr_filestotal.attr,
1175 &lustre_attr_filesfree.attr,
1176 &lustre_attr_uuid.attr,
1180 static void obd_sysfs_release(struct kobject *kobj)
1182 struct obd_device *obd = container_of(kobj, struct obd_device,
1185 complete(&obd->obd_kobj_unregister);
1188 int lprocfs_obd_setup(struct obd_device *obd, bool uuid_only)
1190 struct lprocfs_vars *debugfs_vars = NULL;
1193 if (!obd || obd->obd_magic != OBD_DEVICE_MAGIC)
1196 rc = kobject_set_name(&obd->obd_kset.kobj, "%s", obd->obd_name);
1200 obd->obd_ktype.sysfs_ops = &lustre_sysfs_ops;
1201 obd->obd_ktype.release = obd_sysfs_release;
1203 obd->obd_kset.kobj.parent = obd->obd_type->typ_kobj;
1204 obd->obd_kset.kobj.ktype = &obd->obd_ktype;
1205 init_completion(&obd->obd_kobj_unregister);
1206 rc = kset_register(&obd->obd_kset);
1211 obd->obd_attrs = obd_def_uuid_attrs;
1213 obd->obd_attrs = obd_def_attrs;
1215 rc = sysfs_create_files(&obd->obd_kset.kobj, obd->obd_attrs);
1217 kset_unregister(&obd->obd_kset);
1221 if (!obd->obd_type->typ_procroot)
1222 debugfs_vars = obd->obd_vars;
1223 obd->obd_debugfs_entry = ldebugfs_register(obd->obd_name,
1224 obd->obd_type->typ_debugfs_entry,
1226 if (IS_ERR_OR_NULL(obd->obd_debugfs_entry)) {
1227 rc = obd->obd_debugfs_entry ? PTR_ERR(obd->obd_debugfs_entry)
1229 CERROR("error %d setting up debugfs for %s\n",
1231 obd->obd_debugfs_entry = NULL;
1233 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1234 obd->obd_attrs = NULL;
1235 kset_unregister(&obd->obd_kset);
1239 if (obd->obd_proc_entry || !obd->obd_type->typ_procroot)
1240 GOTO(already_registered, rc);
1242 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
1243 obd->obd_type->typ_procroot,
1244 obd->obd_vars, obd);
1245 if (IS_ERR(obd->obd_proc_entry)) {
1246 rc = PTR_ERR(obd->obd_proc_entry);
1247 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1248 obd->obd_proc_entry = NULL;
1250 ldebugfs_remove(&obd->obd_debugfs_entry);
1251 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1252 obd->obd_attrs = NULL;
1253 kset_unregister(&obd->obd_kset);
1259 EXPORT_SYMBOL(lprocfs_obd_setup);
1261 int lprocfs_obd_cleanup(struct obd_device *obd)
1266 if (obd->obd_proc_exports_entry) {
1267 /* Should be no exports left */
1268 lprocfs_remove(&obd->obd_proc_exports_entry);
1269 obd->obd_proc_exports_entry = NULL;
1272 if (obd->obd_proc_entry) {
1273 lprocfs_remove(&obd->obd_proc_entry);
1274 obd->obd_proc_entry = NULL;
1277 if (!IS_ERR_OR_NULL(obd->obd_debugfs_entry))
1278 ldebugfs_remove(&obd->obd_debugfs_entry);
1280 /* obd device never allocated a kset */
1281 if (!obd->obd_kset.kobj.state_initialized)
1284 if (obd->obd_attrs) {
1285 sysfs_remove_files(&obd->obd_kset.kobj, obd->obd_attrs);
1286 obd->obd_attrs = NULL;
1289 kset_unregister(&obd->obd_kset);
1290 wait_for_completion(&obd->obd_kobj_unregister);
1293 EXPORT_SYMBOL(lprocfs_obd_cleanup);
1295 int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
1297 struct lprocfs_counter *cntr;
1298 unsigned int percpusize;
1300 unsigned long flags = 0;
1303 LASSERT(stats->ls_percpu[cpuid] == NULL);
1304 LASSERT((stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU) == 0);
1306 percpusize = lprocfs_stats_counter_size(stats);
1307 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[cpuid], percpusize);
1308 if (stats->ls_percpu[cpuid]) {
1310 if (unlikely(stats->ls_biggest_alloc_num <= cpuid)) {
1311 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1312 spin_lock_irqsave(&stats->ls_lock, flags);
1314 spin_lock(&stats->ls_lock);
1315 if (stats->ls_biggest_alloc_num <= cpuid)
1316 stats->ls_biggest_alloc_num = cpuid + 1;
1317 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) {
1318 spin_unlock_irqrestore(&stats->ls_lock, flags);
1320 spin_unlock(&stats->ls_lock);
1323 /* initialize the ls_percpu[cpuid] non-zero counter */
1324 for (i = 0; i < stats->ls_num; ++i) {
1325 cntr = lprocfs_stats_counter_get(stats, cpuid, i);
1326 cntr->lc_min = LC_MIN_INIT;
1332 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1333 enum lprocfs_stats_flags flags)
1335 struct lprocfs_stats *stats;
1336 unsigned int num_entry;
1337 unsigned int percpusize = 0;
1343 if (lprocfs_no_percpu_stats != 0)
1344 flags |= LPROCFS_STATS_FLAG_NOPERCPU;
1346 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1349 num_entry = num_possible_cpus();
1351 /* alloc percpu pointers for all possible cpu slots */
1352 LIBCFS_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1356 stats->ls_num = num;
1357 stats->ls_flags = flags;
1358 spin_lock_init(&stats->ls_lock);
1360 /* alloc num of counter headers */
1361 LIBCFS_ALLOC(stats->ls_cnt_header,
1362 stats->ls_num * sizeof(struct lprocfs_counter_header));
1363 if (!stats->ls_cnt_header)
1366 if ((flags & LPROCFS_STATS_FLAG_NOPERCPU) != 0) {
1367 /* contains only one set counters */
1368 percpusize = lprocfs_stats_counter_size(stats);
1369 LIBCFS_ALLOC_ATOMIC(stats->ls_percpu[0], percpusize);
1370 if (!stats->ls_percpu[0])
1372 stats->ls_biggest_alloc_num = 1;
1373 } else if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0) {
1374 /* alloc all percpu data, currently only obd_memory use this */
1375 for (i = 0; i < num_entry; ++i)
1376 if (lprocfs_stats_alloc_one(stats, i) < 0)
1383 lprocfs_free_stats(&stats);
1386 EXPORT_SYMBOL(lprocfs_alloc_stats);
1388 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1390 struct lprocfs_stats *stats = *statsh;
1391 unsigned int num_entry;
1392 unsigned int percpusize;
1395 if (!stats || stats->ls_num == 0)
1399 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1402 num_entry = num_possible_cpus();
1404 percpusize = lprocfs_stats_counter_size(stats);
1405 for (i = 0; i < num_entry; i++)
1406 if (stats->ls_percpu[i])
1407 LIBCFS_FREE(stats->ls_percpu[i], percpusize);
1408 if (stats->ls_cnt_header)
1409 LIBCFS_FREE(stats->ls_cnt_header, stats->ls_num *
1410 sizeof(struct lprocfs_counter_header));
1411 LIBCFS_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_entry]));
1413 EXPORT_SYMBOL(lprocfs_free_stats);
1415 u64 lprocfs_stats_collector(struct lprocfs_stats *stats, int idx,
1416 enum lprocfs_fields_flags field)
1418 unsigned long flags = 0;
1419 unsigned int num_cpu;
1425 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1426 for (i = 0; i < num_cpu; i++) {
1427 struct lprocfs_counter *cntr;
1429 if (!stats->ls_percpu[i])
1432 cntr = lprocfs_stats_counter_get(stats, i, idx);
1433 ret += lprocfs_read_helper(cntr, &stats->ls_cnt_header[idx],
1434 stats->ls_flags, field);
1436 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1439 EXPORT_SYMBOL(lprocfs_stats_collector);
1441 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1443 struct lprocfs_counter *percpu_cntr;
1446 unsigned int num_entry;
1447 unsigned long flags = 0;
1449 num_entry = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1451 for (i = 0; i < num_entry; i++) {
1452 if (!stats->ls_percpu[i])
1454 for (j = 0; j < stats->ls_num; j++) {
1455 percpu_cntr = lprocfs_stats_counter_get(stats, i, j);
1456 percpu_cntr->lc_count = 0;
1457 percpu_cntr->lc_min = LC_MIN_INIT;
1458 percpu_cntr->lc_max = 0;
1459 percpu_cntr->lc_sumsquare = 0;
1460 percpu_cntr->lc_sum = 0;
1461 if (stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE)
1462 percpu_cntr->lc_sum_irq = 0;
1466 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1468 EXPORT_SYMBOL(lprocfs_clear_stats);
1470 static ssize_t lprocfs_stats_seq_write(struct file *file,
1471 const char __user *buf,
1472 size_t len, loff_t *off)
1474 struct seq_file *seq = file->private_data;
1475 struct lprocfs_stats *stats = seq->private;
1477 lprocfs_clear_stats(stats);
1482 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1484 struct lprocfs_stats *stats = p->private;
1486 return (*pos < stats->ls_num) ? pos : NULL;
1489 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1493 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1497 return lprocfs_stats_seq_start(p, pos);
1500 /* seq file export of one lprocfs counter */
1501 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1503 struct lprocfs_stats *stats = p->private;
1504 struct lprocfs_counter_header *hdr;
1505 struct lprocfs_counter ctr;
1506 int idx = *(loff_t *)v;
1509 struct timespec64 now;
1511 ktime_get_real_ts64(&now);
1512 seq_printf(p, "%-25s %llu.%09lu secs.nsecs\n",
1513 "snapshot_time", (s64)now.tv_sec, now.tv_nsec);
1516 hdr = &stats->ls_cnt_header[idx];
1517 lprocfs_stats_collect(stats, idx, &ctr);
1519 if (ctr.lc_count == 0)
1522 seq_printf(p, "%-25s %lld samples [%s]", hdr->lc_name,
1523 ctr.lc_count, hdr->lc_units);
1525 if ((hdr->lc_config & LPROCFS_CNTR_AVGMINMAX) && ctr.lc_count > 0) {
1526 seq_printf(p, " %lld %lld %lld",
1527 ctr.lc_min, ctr.lc_max, ctr.lc_sum);
1528 if (hdr->lc_config & LPROCFS_CNTR_STDDEV)
1529 seq_printf(p, " %llu", ctr.lc_sumsquare);
1535 static const struct seq_operations lprocfs_stats_seq_sops = {
1536 .start = lprocfs_stats_seq_start,
1537 .stop = lprocfs_stats_seq_stop,
1538 .next = lprocfs_stats_seq_next,
1539 .show = lprocfs_stats_seq_show,
1542 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1544 struct seq_file *seq;
1547 rc = LPROCFS_ENTRY_CHECK(inode);
1551 rc = seq_open(file, &lprocfs_stats_seq_sops);
1554 seq = file->private_data;
1555 seq->private = inode->i_private ? inode->i_private : PDE_DATA(inode);
1559 static const struct file_operations lprocfs_stats_seq_fops = {
1560 .owner = THIS_MODULE,
1561 .open = lprocfs_stats_seq_open,
1563 .write = lprocfs_stats_seq_write,
1564 .llseek = seq_lseek,
1565 .release = lprocfs_seq_release,
1568 int ldebugfs_register_stats(struct dentry *parent, const char *name,
1569 struct lprocfs_stats *stats)
1571 struct dentry *entry;
1573 LASSERT(!IS_ERR_OR_NULL(parent));
1575 entry = debugfs_create_file(name, 0644, parent, stats,
1576 &lprocfs_stats_seq_fops);
1577 if (IS_ERR_OR_NULL(entry))
1578 return entry ? PTR_ERR(entry) : -ENOMEM;
1582 EXPORT_SYMBOL_GPL(ldebugfs_register_stats);
1584 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1585 struct lprocfs_stats *stats)
1587 struct proc_dir_entry *entry;
1588 LASSERT(root != NULL);
1590 entry = proc_create_data(name, 0644, root,
1591 &lprocfs_stats_seq_fops, stats);
1596 EXPORT_SYMBOL(lprocfs_register_stats);
1598 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1599 unsigned conf, const char *name, const char *units)
1601 struct lprocfs_counter_header *header;
1602 struct lprocfs_counter *percpu_cntr;
1603 unsigned long flags = 0;
1605 unsigned int num_cpu;
1607 LASSERT(stats != NULL);
1609 header = &stats->ls_cnt_header[index];
1610 LASSERTF(header != NULL, "Failed to allocate stats header:[%d]%s/%s\n",
1611 index, name, units);
1613 header->lc_config = conf;
1614 header->lc_name = name;
1615 header->lc_units = units;
1617 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU, &flags);
1618 for (i = 0; i < num_cpu; ++i) {
1619 if (!stats->ls_percpu[i])
1621 percpu_cntr = lprocfs_stats_counter_get(stats, i, index);
1622 percpu_cntr->lc_count = 0;
1623 percpu_cntr->lc_min = LC_MIN_INIT;
1624 percpu_cntr->lc_max = 0;
1625 percpu_cntr->lc_sumsquare = 0;
1626 percpu_cntr->lc_sum = 0;
1627 if ((stats->ls_flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1628 percpu_cntr->lc_sum_irq = 0;
1630 lprocfs_stats_unlock(stats, LPROCFS_GET_NUM_CPU, &flags);
1632 EXPORT_SYMBOL(lprocfs_counter_init);
1634 static const char * const mps_stats[] = {
1635 [LPROC_MD_CLOSE] = "close",
1636 [LPROC_MD_CREATE] = "create",
1637 [LPROC_MD_ENQUEUE] = "enqueue",
1638 [LPROC_MD_GETATTR] = "getattr",
1639 [LPROC_MD_INTENT_LOCK] = "intent_lock",
1640 [LPROC_MD_LINK] = "link",
1641 [LPROC_MD_RENAME] = "rename",
1642 [LPROC_MD_SETATTR] = "setattr",
1643 [LPROC_MD_FSYNC] = "fsync",
1644 [LPROC_MD_READ_PAGE] = "read_page",
1645 [LPROC_MD_UNLINK] = "unlink",
1646 [LPROC_MD_SETXATTR] = "setxattr",
1647 [LPROC_MD_GETXATTR] = "getxattr",
1648 [LPROC_MD_INTENT_GETATTR_ASYNC] = "intent_getattr_async",
1649 [LPROC_MD_REVALIDATE_LOCK] = "revalidate_lock",
1652 int lprocfs_alloc_md_stats(struct obd_device *obd,
1653 unsigned int num_private_stats)
1655 struct lprocfs_stats *stats;
1656 unsigned int num_stats;
1660 * TODO Ensure that this function is only used where
1661 * appropriate by adding an assertion to the effect that
1662 * obd->obd_type->typ_md_ops is not NULL. We can't do this now
1663 * because mdt_procfs_init() uses this function to allocate
1664 * the stats backing /proc/fs/lustre/mdt/.../md_stats but the
1665 * mdt layer does not use the md_ops interface. This is
1666 * confusing and a waste of memory. See LU-2484.
1668 LASSERT(obd->obd_proc_entry != NULL);
1669 LASSERT(obd->obd_md_stats == NULL);
1671 num_stats = ARRAY_SIZE(mps_stats) + num_private_stats;
1672 stats = lprocfs_alloc_stats(num_stats, 0);
1676 for (i = 0; i < ARRAY_SIZE(mps_stats); i++) {
1677 lprocfs_counter_init(stats, i, 0, mps_stats[i], "reqs");
1678 if (!stats->ls_cnt_header[i].lc_name) {
1679 CERROR("Missing md_stat initializer md_op operation at offset %d. Aborting.\n",
1685 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1687 lprocfs_free_stats(&stats);
1689 obd->obd_md_stats = stats;
1694 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
1696 void lprocfs_free_md_stats(struct obd_device *obd)
1698 struct lprocfs_stats *stats = obd->obd_md_stats;
1701 obd->obd_md_stats = NULL;
1702 lprocfs_free_stats(&stats);
1705 EXPORT_SYMBOL(lprocfs_free_md_stats);
1707 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1709 lprocfs_counter_init(ldlm_stats,
1710 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1711 0, "ldlm_enqueue", "reqs");
1712 lprocfs_counter_init(ldlm_stats,
1713 LDLM_CONVERT - LDLM_FIRST_OPC,
1714 0, "ldlm_convert", "reqs");
1715 lprocfs_counter_init(ldlm_stats,
1716 LDLM_CANCEL - LDLM_FIRST_OPC,
1717 0, "ldlm_cancel", "reqs");
1718 lprocfs_counter_init(ldlm_stats,
1719 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1720 0, "ldlm_bl_callback", "reqs");
1721 lprocfs_counter_init(ldlm_stats,
1722 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1723 0, "ldlm_cp_callback", "reqs");
1724 lprocfs_counter_init(ldlm_stats,
1725 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1726 0, "ldlm_gl_callback", "reqs");
1728 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
1730 __s64 lprocfs_read_helper(struct lprocfs_counter *lc,
1731 struct lprocfs_counter_header *header,
1732 enum lprocfs_stats_flags flags,
1733 enum lprocfs_fields_flags field)
1741 case LPROCFS_FIELDS_FLAGS_CONFIG:
1742 ret = header->lc_config;
1744 case LPROCFS_FIELDS_FLAGS_SUM:
1746 if ((flags & LPROCFS_STATS_FLAG_IRQ_SAFE) != 0)
1747 ret += lc->lc_sum_irq;
1749 case LPROCFS_FIELDS_FLAGS_MIN:
1752 case LPROCFS_FIELDS_FLAGS_MAX:
1755 case LPROCFS_FIELDS_FLAGS_AVG:
1756 ret = (lc->lc_max - lc->lc_min) / 2;
1758 case LPROCFS_FIELDS_FLAGS_SUMSQUARE:
1759 ret = lc->lc_sumsquare;
1761 case LPROCFS_FIELDS_FLAGS_COUNT:
1769 EXPORT_SYMBOL(lprocfs_read_helper);
1771 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
1774 long decimal_val, frac_val;
1780 decimal_val = val / mult;
1781 prtn = snprintf(buffer, count, "%ld", decimal_val);
1782 frac_val = val % mult;
1784 if (prtn < (count - 4) && frac_val > 0) {
1786 int i, temp_mult = 1, frac_bits = 0;
1788 temp_frac = frac_val * 10;
1789 buffer[prtn++] = '.';
1790 while (frac_bits < 2 && (temp_frac / mult) < 1) {
1791 /* only reserved 2 bits fraction */
1792 buffer[prtn++] = '0';
1797 * Need to think these cases :
1798 * 1. #echo x.00 > /proc/xxx output result : x
1799 * 2. #echo x.0x > /proc/xxx output result : x.0x
1800 * 3. #echo x.x0 > /proc/xxx output result : x.x
1801 * 4. #echo x.xx > /proc/xxx output result : x.xx
1802 * Only reserved 2 bits fraction.
1804 for (i = 0; i < (5 - prtn); i++)
1807 frac_bits = min((int)count - prtn, 3 - frac_bits);
1808 prtn += snprintf(buffer + prtn, frac_bits, "%ld",
1809 frac_val * temp_mult / mult);
1812 while (buffer[prtn] < '1' || buffer[prtn] > '9') {
1814 if (buffer[prtn] == '.') {
1821 buffer[prtn++] = '\n';
1824 EXPORT_SYMBOL(lprocfs_read_frac_helper);
1826 int lprocfs_seq_read_frac_helper(struct seq_file *m, long val, int mult)
1828 long decimal_val, frac_val;
1830 decimal_val = val / mult;
1831 seq_printf(m, "%ld", decimal_val);
1832 frac_val = val % mult;
1839 /* Three cases: x0, xx, 0x */
1840 if ((frac_val % 10) != 0)
1841 seq_printf(m, ".%ld", frac_val);
1843 seq_printf(m, ".%ld", frac_val / 10);
1846 seq_printf(m, "\n");
1849 EXPORT_SYMBOL(lprocfs_seq_read_frac_helper);
1851 /* Obtains the conversion factor for the unit specified */
1852 static int get_mult(char unit, __u64 *mult)
1857 /* peta, tera, giga, mega, and kilo */
1874 /* some tests expect % to be accepted */
1888 * Ensures the numeric string is valid. The function provides the final
1889 * multiplier in the case a unit exists at the end of the string. It also
1890 * locates the start of the whole and fractional parts (if any). This
1891 * function modifies the string so kstrtoull can be used to parse both
1892 * the whole and fraction portions. This function also figures out
1893 * the base of the number.
1895 static int preprocess_numeric_str(char *buffer, __u64 *mult, __u64 def_mult,
1896 bool allow_units, char **whole, char **frac,
1899 bool hit_decimal = false;
1900 bool hit_unit = false;
1908 /* a hex string if it starts with "0x" */
1909 if (buffer[0] == '0' && tolower(buffer[1]) == 'x') {
1917 /* allow for a single new line before the null terminator */
1918 if (*buffer == '\n') {
1928 /* any chars after our unit indicates a malformed string */
1932 /* ensure we only hit one decimal */
1933 if (*buffer == '.') {
1937 /* if past start, there's a whole part */
1938 if (start != buffer)
1944 } else if (!isdigit(*buffer) &&
1945 !(*base == 16 && isxdigit(*buffer))) {
1947 /* if we allow units, attempt to get mult */
1949 rc = get_mult(*buffer, mult);
1953 /* string stops here, but keep processing */
1965 /* hit a decimal, make sure there's a fractional part */
1971 /* didn't hit a decimal, but may have a whole part */
1972 if (start != buffer && *start)
1976 /* malformed string if we didn't get anything */
1977 if (!*frac && !*whole)
1984 * Parses a numeric string which can contain a whole and fraction portion
1985 * into a __u64. Accepts a multiplier to apply to the value parsed. Also
1986 * allows the string to have a unit at the end. The function handles
1987 * wrapping of the final unsigned value.
1989 static int str_to_u64_parse(char *buffer, unsigned long count,
1990 __u64 *val, __u64 def_mult, bool allow_units)
1994 unsigned int frac_d = 1;
1995 __u64 wrap_indicator = ULLONG_MAX;
2000 unsigned int base = 10;
2002 rc = preprocess_numeric_str(buffer, &mult, def_mult, allow_units,
2003 &strwhole, &strfrac, &base);
2013 /* the multiplier limits how large the value can be */
2014 wrap_indicator = div64_u64(wrap_indicator, mult);
2017 rc = kstrtoull(strwhole, base, &whole);
2021 if (whole > wrap_indicator)
2028 if (strlen(strfrac) > 10)
2031 rc = kstrtoull(strfrac, base, &frac);
2035 /* determine power of fractional portion */
2041 /* fractional portion is too large to perform calculation */
2042 if (frac > wrap_indicator)
2046 do_div(frac, frac_d);
2049 /* check that the sum of whole and fraction fits in u64 */
2050 if (whole > (ULLONG_MAX - frac))
2053 *val = whole + frac;
2059 * This function parses numeric/hex strings into __s64. It accepts a multiplier
2060 * which will apply to the value parsed. It also can allow the string to
2061 * have a unit as the last character. The function handles overflow/underflow
2062 * of the signed integer.
2064 static int str_to_s64_internal(const char __user *buffer, unsigned long count,
2065 __s64 *val, __u64 def_mult, bool allow_units)
2069 unsigned int offset = 0;
2070 int signed sign = 1;
2071 __u64 max = LLONG_MAX;
2074 if (count > (sizeof(kernbuf) - 1))
2077 if (copy_from_user(kernbuf, buffer, count))
2080 kernbuf[count] = '\0';
2082 /* keep track of our sign */
2083 if (*kernbuf == '-') {
2086 /* equivalent to max = -LLONG_MIN, avoids overflow */
2090 rc = str_to_u64_parse(kernbuf + offset, count - offset,
2091 &tmp, def_mult, allow_units);
2095 /* check for overflow/underflow */
2099 *val = (__s64)tmp * sign;
2105 * Convert a user string into a signed 64 bit number. This function produces
2106 * an error when the value parsed from the string times multiplier underflows or
2107 * overflows. This function only accepts strings that contains digits, an
2108 * optional decimal, and a char representing a unit at the end. If a unit is
2109 * specified in the string, the multiplier provided by the caller is ignored.
2110 * This function can also accept hexadecimal strings which are prefixed with
2113 * \param[in] buffer string consisting of numbers, a decimal, and a unit
2114 * \param[in] count buffer length
2115 * \param[in] val if successful, the value represented by the string
2116 * \param[in] defunit default unit if string doesn't contain one
2118 * \retval 0 on success
2119 * \retval negative number on error
2121 int lprocfs_str_with_units_to_s64(const char __user *buffer,
2122 unsigned long count, __s64 *val, char defunit)
2127 if (defunit != '1') {
2128 rc = get_mult(defunit, &mult);
2133 return str_to_s64_internal(buffer, count, val, mult, true);
2135 EXPORT_SYMBOL(lprocfs_str_with_units_to_s64);
2137 char *lprocfs_strnstr(const char *s1, const char *s2, size_t len)
2146 if (!memcmp(s1, s2, l2))
2152 EXPORT_SYMBOL(lprocfs_strnstr);
2155 * Find the string \a name in the input \a buffer, and return a pointer to the
2156 * value immediately following \a name, reducing \a count appropriately.
2157 * If \a name is not found the original \a buffer is returned.
2159 char *lprocfs_find_named_value(const char *buffer, const char *name,
2163 size_t buflen = *count;
2165 /* there is no strnstr() in rhel5 and ubuntu kernels */
2166 val = lprocfs_strnstr(buffer, name, buflen);
2168 return (char *)buffer;
2170 val += strlen(name); /* skip prefix */
2171 while (val < buffer + buflen && isspace(*val)) /* skip separator */
2175 while (val < buffer + buflen && isalnum(*val)) {
2180 return val - *count;
2182 EXPORT_SYMBOL(lprocfs_find_named_value);
2184 int ldebugfs_seq_create(struct dentry *parent, const char *name, umode_t mode,
2185 const struct file_operations *seq_fops, void *data)
2187 struct dentry *entry;
2189 /* Disallow secretly (un)writable entries. */
2190 LASSERT((!seq_fops->write) == (!(mode & 0222)));
2192 entry = debugfs_create_file(name, mode, parent, data, seq_fops);
2193 if (IS_ERR_OR_NULL(entry))
2194 return entry ? PTR_ERR(entry) : -ENOMEM;
2198 EXPORT_SYMBOL_GPL(ldebugfs_seq_create);
2200 int lprocfs_seq_create(struct proc_dir_entry *parent,
2203 const struct file_operations *seq_fops,
2206 struct proc_dir_entry *entry;
2209 /* Disallow secretly (un)writable entries. */
2210 LASSERT((seq_fops->write == NULL) == ((mode & 0222) == 0));
2212 entry = proc_create_data(name, mode, parent, seq_fops, data);
2219 EXPORT_SYMBOL(lprocfs_seq_create);
2221 int lprocfs_obd_seq_create(struct obd_device *dev,
2224 const struct file_operations *seq_fops,
2227 return (lprocfs_seq_create(dev->obd_proc_entry, name,
2228 mode, seq_fops, data));
2230 EXPORT_SYMBOL(lprocfs_obd_seq_create);
2232 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
2234 if (value >= OBD_HIST_MAX)
2235 value = OBD_HIST_MAX - 1;
2237 spin_lock(&oh->oh_lock);
2238 oh->oh_buckets[value]++;
2239 spin_unlock(&oh->oh_lock);
2241 EXPORT_SYMBOL(lprocfs_oh_tally);
2243 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
2245 unsigned int val = 0;
2247 if (likely(value != 0))
2248 val = min(fls(value - 1), OBD_HIST_MAX);
2250 lprocfs_oh_tally(oh, val);
2252 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
2254 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
2256 unsigned long ret = 0;
2259 for (i = 0; i < OBD_HIST_MAX; i++)
2260 ret += oh->oh_buckets[i];
2263 EXPORT_SYMBOL(lprocfs_oh_sum);
2265 void lprocfs_oh_clear(struct obd_histogram *oh)
2267 spin_lock(&oh->oh_lock);
2268 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
2269 spin_unlock(&oh->oh_lock);
2271 EXPORT_SYMBOL(lprocfs_oh_clear);
2273 ssize_t lustre_attr_show(struct kobject *kobj,
2274 struct attribute *attr, char *buf)
2276 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2278 return a->show ? a->show(kobj, attr, buf) : 0;
2280 EXPORT_SYMBOL_GPL(lustre_attr_show);
2282 ssize_t lustre_attr_store(struct kobject *kobj, struct attribute *attr,
2283 const char *buf, size_t len)
2285 struct lustre_attr *a = container_of(attr, struct lustre_attr, attr);
2287 return a->store ? a->store(kobj, attr, buf, len) : len;
2289 EXPORT_SYMBOL_GPL(lustre_attr_store);
2291 const struct sysfs_ops lustre_sysfs_ops = {
2292 .show = lustre_attr_show,
2293 .store = lustre_attr_store,
2295 EXPORT_SYMBOL_GPL(lustre_sysfs_ops);
2297 int lprocfs_obd_max_pages_per_rpc_seq_show(struct seq_file *m, void *data)
2299 struct obd_device *dev = data;
2300 struct client_obd *cli = &dev->u.cli;
2302 spin_lock(&cli->cl_loi_list_lock);
2303 seq_printf(m, "%d\n", cli->cl_max_pages_per_rpc);
2304 spin_unlock(&cli->cl_loi_list_lock);
2307 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_show);
2309 ssize_t lprocfs_obd_max_pages_per_rpc_seq_write(struct file *file,
2310 const char __user *buffer,
2311 size_t count, loff_t *off)
2313 struct obd_device *dev =
2314 ((struct seq_file *)file->private_data)->private;
2315 struct client_obd *cli = &dev->u.cli;
2316 struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
2320 rc = lprocfs_str_with_units_to_s64(buffer, count, &val, '1');
2326 /* if the max_pages is specified in bytes, convert to pages */
2327 if (val >= ONE_MB_BRW_SIZE)
2330 LPROCFS_CLIMP_CHECK(dev);
2332 chunk_mask = ~((1 << (cli->cl_chunkbits - PAGE_SHIFT)) - 1);
2333 /* max_pages_per_rpc must be chunk aligned */
2334 val = (val + ~chunk_mask) & chunk_mask;
2335 if (val == 0 || (ocd->ocd_brw_size != 0 &&
2336 val > ocd->ocd_brw_size >> PAGE_SHIFT)) {
2337 LPROCFS_CLIMP_EXIT(dev);
2340 spin_lock(&cli->cl_loi_list_lock);
2341 cli->cl_max_pages_per_rpc = val;
2342 client_adjust_max_dirty(cli);
2343 spin_unlock(&cli->cl_loi_list_lock);
2345 LPROCFS_CLIMP_EXIT(dev);
2348 EXPORT_SYMBOL(lprocfs_obd_max_pages_per_rpc_seq_write);
2350 ssize_t short_io_bytes_show(struct kobject *kobj, struct attribute *attr,
2353 struct obd_device *dev = container_of(kobj, struct obd_device,
2355 struct client_obd *cli = &dev->u.cli;
2358 spin_lock(&cli->cl_loi_list_lock);
2359 rc = sprintf(buf, "%d\n", cli->cl_max_short_io_bytes);
2360 spin_unlock(&cli->cl_loi_list_lock);
2363 EXPORT_SYMBOL(short_io_bytes_show);
2365 /* Used to catch people who think they're specifying pages. */
2366 #define MIN_SHORT_IO_BYTES 64U
2368 ssize_t short_io_bytes_store(struct kobject *kobj, struct attribute *attr,
2369 const char *buffer, size_t count)
2371 struct obd_device *dev = container_of(kobj, struct obd_device,
2373 struct client_obd *cli = &dev->u.cli;
2377 LPROCFS_CLIMP_CHECK(dev);
2379 rc = kstrtouint(buffer, 0, &val);
2383 if (val && (val < MIN_SHORT_IO_BYTES || val > OBD_MAX_SHORT_IO_BYTES))
2384 GOTO(out, rc = -ERANGE);
2388 spin_lock(&cli->cl_loi_list_lock);
2389 if (val > (cli->cl_max_pages_per_rpc << PAGE_SHIFT))
2392 cli->cl_max_short_io_bytes = val;
2393 spin_unlock(&cli->cl_loi_list_lock);
2396 LPROCFS_CLIMP_EXIT(dev);
2399 EXPORT_SYMBOL(short_io_bytes_store);
2401 int lprocfs_wr_root_squash(const char __user *buffer, unsigned long count,
2402 struct root_squash_info *squash, char *name)
2405 char kernbuf[64], *tmp, *errmsg;
2406 unsigned long uid, gid;
2409 if (count >= sizeof(kernbuf)) {
2410 errmsg = "string too long";
2411 GOTO(failed_noprint, rc = -EINVAL);
2413 if (copy_from_user(kernbuf, buffer, count)) {
2414 errmsg = "bad address";
2415 GOTO(failed_noprint, rc = -EFAULT);
2417 kernbuf[count] = '\0';
2419 /* look for uid gid separator */
2420 tmp = strchr(kernbuf, ':');
2422 errmsg = "needs uid:gid format";
2423 GOTO(failed, rc = -EINVAL);
2429 if (kstrtoul(kernbuf, 0, &uid) != 0) {
2431 GOTO(failed, rc = -EINVAL);
2435 if (kstrtoul(tmp, 0, &gid) != 0) {
2437 GOTO(failed, rc = -EINVAL);
2440 squash->rsi_uid = uid;
2441 squash->rsi_gid = gid;
2443 LCONSOLE_INFO("%s: root_squash is set to %u:%u\n",
2444 name, squash->rsi_uid, squash->rsi_gid);
2452 CWARN("%s: failed to set root_squash to \"%s\", %s, rc = %d\n",
2453 name, kernbuf, errmsg, rc);
2456 CWARN("%s: failed to set root_squash due to %s, rc = %d\n",
2460 EXPORT_SYMBOL(lprocfs_wr_root_squash);
2463 int lprocfs_wr_nosquash_nids(const char __user *buffer, unsigned long count,
2464 struct root_squash_info *squash, char *name)
2467 char *kernbuf = NULL;
2469 struct list_head tmp;
2474 errmsg = "string too long";
2475 GOTO(failed, rc = -EINVAL);
2478 OBD_ALLOC(kernbuf, count + 1);
2480 errmsg = "no memory";
2481 GOTO(failed, rc = -ENOMEM);
2483 if (copy_from_user(kernbuf, buffer, count)) {
2484 errmsg = "bad address";
2485 GOTO(failed, rc = -EFAULT);
2487 kernbuf[count] = '\0';
2489 if (count > 0 && kernbuf[count - 1] == '\n')
2492 if ((len == 4 && strncmp(kernbuf, "NONE", len) == 0) ||
2493 (len == 5 && strncmp(kernbuf, "clear", len) == 0)) {
2494 /* empty string is special case */
2495 down_write(&squash->rsi_sem);
2496 if (!list_empty(&squash->rsi_nosquash_nids))
2497 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2498 up_write(&squash->rsi_sem);
2499 LCONSOLE_INFO("%s: nosquash_nids is cleared\n", name);
2500 OBD_FREE(kernbuf, count + 1);
2504 INIT_LIST_HEAD(&tmp);
2505 if (cfs_parse_nidlist(kernbuf, count, &tmp) <= 0) {
2506 errmsg = "can't parse";
2507 GOTO(failed, rc = -EINVAL);
2509 LCONSOLE_INFO("%s: nosquash_nids set to %s\n",
2511 OBD_FREE(kernbuf, count + 1);
2514 down_write(&squash->rsi_sem);
2515 if (!list_empty(&squash->rsi_nosquash_nids))
2516 cfs_free_nidlist(&squash->rsi_nosquash_nids);
2517 list_splice(&tmp, &squash->rsi_nosquash_nids);
2518 up_write(&squash->rsi_sem);
2524 CWARN("%s: failed to set nosquash_nids to \"%s\", %s rc = %d\n",
2525 name, kernbuf, errmsg, rc);
2526 OBD_FREE(kernbuf, count + 1);
2528 CWARN("%s: failed to set nosquash_nids due to %s rc = %d\n",
2533 EXPORT_SYMBOL(lprocfs_wr_nosquash_nids);
2535 #endif /* CONFIG_PROC_FS*/