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>
53 #include <lustre_log.h>
54 #include <lustre/lustre_idl.h>
58 #define MAX_STRING_SIZE 128
60 /* for bug 10866, global variable */
61 DECLARE_RWSEM(_lprocfs_lock);
62 EXPORT_SYMBOL(_lprocfs_lock);
64 int lprocfs_seq_release(struct inode *inode, struct file *file)
67 return seq_release(inode, file);
69 EXPORT_SYMBOL(lprocfs_seq_release);
71 struct proc_dir_entry *lprocfs_srch(struct proc_dir_entry *head,
74 struct proc_dir_entry *temp;
81 while (temp != NULL) {
82 if (strcmp(temp->name, name) == 0) {
93 /* lprocfs API calls */
95 /* Function that emulates snprintf but also has the side effect of advancing
96 the page pointer for the next write into the buffer, incrementing the total
97 length written to the buffer, and decrementing the size left in the
99 static int lprocfs_obd_snprintf(char **page, int end, int *len,
100 const char *format, ...)
108 va_start(list, format);
109 n = vsnprintf(*page, end - *len, format, list);
112 *page += n; *len += n;
116 cfs_proc_dir_entry_t *lprocfs_add_simple(struct proc_dir_entry *root,
118 read_proc_t *read_proc,
119 write_proc_t *write_proc,
121 struct file_operations *fops)
123 cfs_proc_dir_entry_t *proc;
126 if (root == NULL || name == NULL)
127 return ERR_PTR(-EINVAL);
134 proc = create_proc_entry(name, mode, root);
136 CERROR("LprocFS: No memory to create /proc entry %s", name);
137 return ERR_PTR(-ENOMEM);
139 proc->read_proc = read_proc;
140 proc->write_proc = write_proc;
143 proc->proc_fops = fops;
147 struct proc_dir_entry *lprocfs_add_symlink(const char *name,
148 struct proc_dir_entry *parent, const char *dest)
150 struct proc_dir_entry *entry;
152 if (parent == NULL || dest == NULL)
155 entry = proc_symlink(name, parent, dest);
157 CERROR("LprocFS: Could not create symbolic link from %s to %s",
162 static ssize_t lprocfs_fops_read(struct file *f, char __user *buf,
163 size_t size, loff_t *ppos)
165 struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
166 char *page, *start = NULL;
167 int rc = 0, eof = 1, count;
169 if (*ppos >= CFS_PAGE_SIZE)
172 page = (char *)__get_free_page(GFP_KERNEL);
177 OBD_FAIL_TIMEOUT(OBD_FAIL_LPROC_REMOVE, 10);
178 if (!dp->deleted && dp->read_proc)
179 rc = dp->read_proc(page, &start, *ppos, CFS_PAGE_SIZE,
185 /* for lustre proc read, the read count must be less than PAGE_SIZE */
194 start = page + *ppos;
195 } else if (start < page) {
199 count = (rc < size) ? rc : size;
200 if (copy_to_user(buf, start, count)) {
207 free_page((unsigned long)page);
211 static ssize_t lprocfs_fops_write(struct file *f, const char __user *buf,
212 size_t size, loff_t *ppos)
214 struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
218 if (!dp->deleted && dp->write_proc)
219 rc = dp->write_proc(f, buf, size, dp->data);
224 static struct file_operations lprocfs_generic_fops = {
225 .owner = THIS_MODULE,
226 .read = lprocfs_fops_read,
227 .write = lprocfs_fops_write,
230 int lprocfs_evict_client_open(struct inode *inode, struct file *f)
232 struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
233 struct obd_device *obd = dp->data;
235 atomic_inc(&obd->obd_evict_inprogress);
240 int lprocfs_evict_client_release(struct inode *inode, struct file *f)
242 struct proc_dir_entry *dp = PDE(f->f_dentry->d_inode);
243 struct obd_device *obd = dp->data;
245 atomic_dec(&obd->obd_evict_inprogress);
246 wake_up(&obd->obd_evict_inprogress_waitq);
251 struct file_operations lprocfs_evict_client_fops = {
252 .owner = THIS_MODULE,
253 .read = lprocfs_fops_read,
254 .write = lprocfs_fops_write,
255 .open = lprocfs_evict_client_open,
256 .release = lprocfs_evict_client_release,
258 EXPORT_SYMBOL(lprocfs_evict_client_fops);
263 * \param root [in] The parent proc entry on which new entry will be added.
264 * \param list [in] Array of proc entries to be added.
265 * \param data [in] The argument to be passed when entries read/write routines
266 * are called through /proc file.
268 * \retval 0 on success
271 int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
274 if (root == NULL || list == NULL)
277 while (list->name != NULL) {
278 struct proc_dir_entry *cur_root, *proc;
279 char *pathcopy, *cur, *next, pathbuf[64];
280 int pathsize = strlen(list->name) + 1;
285 /* need copy of path for strsep */
286 if (strlen(list->name) > sizeof(pathbuf) - 1) {
287 OBD_ALLOC(pathcopy, pathsize);
288 if (pathcopy == NULL)
295 strcpy(pathcopy, list->name);
297 while (cur_root != NULL && (cur = strsep(&next, "/"))) {
298 if (*cur =='\0') /* skip double/trailing "/" */
301 proc = lprocfs_srch(cur_root, cur);
302 CDEBUG(D_OTHER, "cur_root=%s, cur=%s, next=%s, (%s)\n",
303 cur_root->name, cur, next,
304 (proc ? "exists" : "new"));
306 cur_root = (proc ? proc :
307 proc_mkdir(cur, cur_root));
308 } else if (proc == NULL) {
310 if (list->proc_mode != 0000) {
311 mode = list->proc_mode;
315 if (list->write_fptr)
318 proc = create_proc_entry(cur, mode, cur_root);
322 if (pathcopy != pathbuf)
323 OBD_FREE(pathcopy, pathsize);
325 if (cur_root == NULL || proc == NULL) {
326 CERROR("LprocFS: No memory to create /proc entry %s",
332 proc->proc_fops = list->fops;
334 proc->proc_fops = &lprocfs_generic_fops;
335 proc->read_proc = list->read_fptr;
336 proc->write_proc = list->write_fptr;
337 proc->data = (list->data ? list->data : data);
343 void lprocfs_remove(struct proc_dir_entry **rooth)
345 struct proc_dir_entry *root = *rooth;
346 struct proc_dir_entry *temp = root;
347 struct proc_dir_entry *rm_entry;
348 struct proc_dir_entry *parent;
354 parent = root->parent;
355 LASSERT(parent != NULL);
356 LPROCFS_WRITE_ENTRY(); /* search vs remove race */
359 while (temp->subdir != NULL)
365 /* Memory corruption once caused this to fail, and
366 without this LASSERT we would loop here forever. */
367 LASSERTF(strlen(rm_entry->name) == rm_entry->namelen,
368 "0x%p %s/%s len %d\n", rm_entry, temp->name,
369 rm_entry->name, (int)strlen(rm_entry->name));
371 /* Now, the rm_entry->deleted flags is protected
372 * by _lprocfs_lock. */
373 rm_entry->data = NULL;
374 remove_proc_entry(rm_entry->name, temp);
378 LPROCFS_WRITE_EXIT();
381 void lprocfs_remove_proc_entry(const char *name, struct proc_dir_entry *parent)
383 LASSERT(parent != NULL);
384 remove_proc_entry(name, parent);
387 struct proc_dir_entry *lprocfs_register(const char *name,
388 struct proc_dir_entry *parent,
389 struct lprocfs_vars *list, void *data)
391 struct proc_dir_entry *newchild;
393 newchild = lprocfs_srch(parent, name);
394 if (newchild != NULL) {
395 CERROR(" Lproc: Attempting to register %s more than once \n",
397 return ERR_PTR(-EALREADY);
400 newchild = proc_mkdir(name, parent);
401 if (newchild != NULL && list != NULL) {
402 int rc = lprocfs_add_vars(newchild, list, data);
404 lprocfs_remove(&newchild);
411 /* Generic callbacks */
412 int lprocfs_rd_uint(char *page, char **start, off_t off,
413 int count, int *eof, void *data)
415 unsigned int *temp = data;
416 return snprintf(page, count, "%u\n", *temp);
419 int lprocfs_wr_uint(struct file *file, const char *buffer,
420 unsigned long count, void *data)
423 char dummy[MAX_STRING_SIZE + 1], *end;
426 dummy[MAX_STRING_SIZE] = '\0';
427 if (copy_from_user(dummy, buffer, MAX_STRING_SIZE))
430 tmp = simple_strtoul(dummy, &end, 0);
434 *p = (unsigned int)tmp;
438 int lprocfs_rd_u64(char *page, char **start, off_t off,
439 int count, int *eof, void *data)
441 LASSERT(data != NULL);
443 return snprintf(page, count, LPU64"\n", *(__u64 *)data);
446 int lprocfs_rd_atomic(char *page, char **start, off_t off,
447 int count, int *eof, void *data)
449 atomic_t *atom = data;
450 LASSERT(atom != NULL);
452 return snprintf(page, count, "%d\n", atomic_read(atom));
455 int lprocfs_wr_atomic(struct file *file, const char *buffer,
456 unsigned long count, void *data)
458 atomic_t *atm = data;
462 rc = lprocfs_write_helper(buffer, count, &val);
469 atomic_set(atm, val);
473 int lprocfs_rd_uuid(char *page, char **start, off_t off, int count,
474 int *eof, void *data)
476 struct obd_device *obd = data;
478 LASSERT(obd != NULL);
480 return snprintf(page, count, "%s\n", obd->obd_uuid.uuid);
483 int lprocfs_rd_name(char *page, char **start, off_t off, int count,
484 int *eof, void *data)
486 struct obd_device *dev = data;
488 LASSERT(dev != NULL);
489 LASSERT(dev->obd_name != NULL);
491 return snprintf(page, count, "%s\n", dev->obd_name);
494 int lprocfs_rd_fstype(char *page, char **start, off_t off, int count, int *eof,
497 struct obd_device *obd = data;
499 LASSERT(obd != NULL);
500 LASSERT(obd->obd_fsops != NULL);
501 LASSERT(obd->obd_fsops->fs_type != NULL);
502 return snprintf(page, count, "%s\n", obd->obd_fsops->fs_type);
505 int lprocfs_rd_blksize(char *page, char **start, off_t off, int count,
506 int *eof, void *data)
508 struct obd_statfs osfs;
509 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
513 rc = snprintf(page, count, "%u\n", osfs.os_bsize);
518 int lprocfs_rd_kbytestotal(char *page, char **start, off_t off, int count,
519 int *eof, void *data)
521 struct obd_statfs osfs;
522 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
525 __u32 blk_size = osfs.os_bsize >> 10;
526 __u64 result = osfs.os_blocks;
528 while (blk_size >>= 1)
532 rc = snprintf(page, count, LPU64"\n", result);
537 int lprocfs_rd_kbytesfree(char *page, char **start, off_t off, int count,
538 int *eof, void *data)
540 struct obd_statfs osfs;
541 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
544 __u32 blk_size = osfs.os_bsize >> 10;
545 __u64 result = osfs.os_bfree;
547 while (blk_size >>= 1)
551 rc = snprintf(page, count, LPU64"\n", result);
556 int lprocfs_rd_kbytesavail(char *page, char **start, off_t off, int count,
557 int *eof, void *data)
559 struct obd_statfs osfs;
560 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
563 __u32 blk_size = osfs.os_bsize >> 10;
564 __u64 result = osfs.os_bavail;
566 while (blk_size >>= 1)
570 rc = snprintf(page, count, LPU64"\n", result);
575 int lprocfs_rd_filestotal(char *page, char **start, off_t off, int count,
576 int *eof, void *data)
578 struct obd_statfs osfs;
579 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
583 rc = snprintf(page, count, LPU64"\n", osfs.os_files);
589 int lprocfs_rd_filesfree(char *page, char **start, off_t off, int count,
590 int *eof, void *data)
592 struct obd_statfs osfs;
593 int rc = obd_statfs(data, &osfs, cfs_time_current_64() - HZ,
597 rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
602 int lprocfs_rd_server_uuid(char *page, char **start, off_t off, int count,
603 int *eof, void *data)
605 struct obd_device *obd = data;
606 struct obd_import *imp;
607 char *imp_state_name = NULL;
610 LASSERT(obd != NULL);
611 LPROCFS_CLIMP_CHECK(obd);
612 imp = obd->u.cli.cl_import;
613 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
615 rc = snprintf(page, count, "%s\t%s%s\n",
616 obd2cli_tgt(obd), imp_state_name,
617 imp->imp_deactive ? "\tDEACTIVATED" : "");
619 LPROCFS_CLIMP_EXIT(obd);
623 int lprocfs_rd_conn_uuid(char *page, char **start, off_t off, int count,
624 int *eof, void *data)
626 struct obd_device *obd = data;
627 struct ptlrpc_connection *conn;
630 LASSERT(obd != NULL);
632 LPROCFS_CLIMP_CHECK(obd);
633 conn = obd->u.cli.cl_import->imp_connection;
634 LASSERT(conn != NULL);
636 if (obd->u.cli.cl_import) {
637 rc = snprintf(page, count, "%s\n",
638 conn->c_remote_uuid.uuid);
640 rc = snprintf(page, count, "%s\n", "<none>");
643 LPROCFS_CLIMP_EXIT(obd);
647 /** add up per-cpu counters */
648 void lprocfs_stats_collect(struct lprocfs_stats *stats, int idx,
649 struct lprocfs_counter *cnt)
651 unsigned int num_cpu;
652 struct lprocfs_counter t;
653 struct lprocfs_counter *percpu_cntr;
656 memset(cnt, 0, sizeof(*cnt));
659 /* set count to 1 to avoid divide-by-zero errs in callers */
664 cnt->lc_min = LC_MIN_INIT;
666 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
669 num_cpu = num_possible_cpus();
671 for (i = 0; i < num_cpu; i++) {
672 percpu_cntr = &(stats->ls_percpu[i])->lp_cntr[idx];
675 centry = atomic_read(&percpu_cntr->lc_cntl.la_entry);
676 t.lc_count = percpu_cntr->lc_count;
677 t.lc_sum = percpu_cntr->lc_sum;
678 t.lc_min = percpu_cntr->lc_min;
679 t.lc_max = percpu_cntr->lc_max;
680 t.lc_sumsquare = percpu_cntr->lc_sumsquare;
681 } while (centry != atomic_read(&percpu_cntr->lc_cntl.la_entry) &&
682 centry != atomic_read(&percpu_cntr->lc_cntl.la_exit));
683 cnt->lc_count += t.lc_count;
684 cnt->lc_sum += t.lc_sum;
685 if (t.lc_min < cnt->lc_min)
686 cnt->lc_min = t.lc_min;
687 if (t.lc_max > cnt->lc_max)
688 cnt->lc_max = t.lc_max;
689 cnt->lc_sumsquare += t.lc_sumsquare;
692 cnt->lc_units = stats->ls_percpu[0]->lp_cntr[idx].lc_units;
696 * Append a space separated list of current set flags to str.
698 #define flag2str(flag) \
699 if (imp->imp_##flag && max - len > 0) \
700 len += snprintf(str + len, max - len, "%s" #flag, len ? ", " : "");
701 static int obd_import_flags2str(struct obd_import *imp, char *str, int max)
705 if (imp->imp_obd->obd_no_recov)
706 len += snprintf(str, max - len, "no_recov");
710 flag2str(replayable);
713 flag2str(last_recon);
718 static const char *obd_connect_names[] = {
745 "mds_mds_connection",
748 "alt_checksum_algorithm",
757 static int obd_connect_flags2str(char *page, int count, __u64 flags, char *sep)
762 for (i = 0; obd_connect_names[i] != NULL; i++, mask <<= 1) {
764 ret += snprintf(page + ret, count - ret, "%s%s",
765 ret ? sep : "", obd_connect_names[i]);
767 if (flags & ~(mask - 1))
768 ret += snprintf(page + ret, count - ret,
769 "%sunknown flags "LPX64,
770 ret ? sep : "", flags & ~(mask - 1));
774 int lprocfs_rd_import(char *page, char **start, off_t off, int count,
775 int *eof, void *data)
777 struct lprocfs_counter ret;
778 struct obd_device *obd = (struct obd_device *)data;
779 struct obd_import *imp;
782 LASSERT(obd != NULL);
783 LPROCFS_CLIMP_CHECK(obd);
784 imp = obd->u.cli.cl_import;
787 i = snprintf(page, count,
791 " current_connection: %s\n"
796 imp->imp_connection->c_remote_uuid.uuid,
797 ptlrpc_import_state_name(imp->imp_state));
798 i += obd_connect_flags2str(page + i, count - i,
799 imp->imp_connect_data.ocd_connect_flags,
801 i += snprintf(page + i, count - i,
804 i += obd_import_flags2str(imp, page + i, count - i);
806 i += snprintf(page + i, count - i,
809 " connection_attempts: %u\n"
811 " in-progress_invalidations: %u\n",
814 atomic_read(&imp->imp_inval_count));
816 lprocfs_stats_collect(obd->obd_svc_stats, PTLRPC_REQWAIT_CNTR, &ret);
817 do_div(ret.lc_sum, ret.lc_count);
818 i += snprintf(page + i, count - i,
821 " unregistering: %u\n"
823 " avg_waittime: "LPU64" %s\n",
824 atomic_read(&imp->imp_inflight),
825 atomic_read(&imp->imp_unregistering),
826 atomic_read(&imp->imp_timeouts),
827 ret.lc_sum, ret.lc_units);
830 for(j = 0; j < IMP_AT_MAX_PORTALS; j++) {
831 if (imp->imp_at.iat_portal[j] == 0)
833 k = max_t(unsigned int, k,
834 at_get(&imp->imp_at.iat_service_estimate[j]));
836 i += snprintf(page + i, count - i,
837 " service_estimates:\n"
838 " services: %u sec\n"
839 " network: %u sec\n",
841 at_get(&imp->imp_at.iat_net_latency));
843 i += snprintf(page + i, count - i,
845 " last_replay: "LPU64"\n"
846 " peer_committed: "LPU64"\n"
847 " last_checked: "LPU64"\n",
848 imp->imp_last_replay_transno,
849 imp->imp_peer_committed_transno,
850 imp->imp_last_transno_checked);
853 for (rw = 0; rw <= 1; rw++) {
854 lprocfs_stats_collect(obd->obd_svc_stats,
855 PTLRPC_LAST_CNTR + BRW_READ_BYTES + rw,
857 if (ret.lc_sum > 0) {
858 do_div(ret.lc_sum, ret.lc_count);
859 i += snprintf(page + i, count - i,
860 " %s_data_averages:\n"
861 " bytes_per_rpc: "LPU64"\n",
862 rw ? "write" : "read",
866 j = opcode_offset(OST_READ + rw) + EXTRA_MAX_OPCODES;
867 lprocfs_stats_collect(obd->obd_svc_stats, j, &ret);
868 if (ret.lc_sum > 0) {
869 do_div(ret.lc_sum, ret.lc_count);
870 i += snprintf(page + i, count - i,
871 " %s_per_rpc: "LPU64"\n",
872 ret.lc_units, ret.lc_sum);
875 i += snprintf(page + i, count - i,
876 " MB_per_sec: %u.%.02u\n",
877 k / j, (100 * k / j) % 100);
881 LPROCFS_CLIMP_EXIT(obd);
885 int lprocfs_rd_state(char *page, char **start, off_t off, int count,
886 int *eof, void *data)
888 struct obd_device *obd = (struct obd_device *)data;
889 struct obd_import *imp;
892 LASSERT(obd != NULL);
893 LPROCFS_CLIMP_CHECK(obd);
894 imp = obd->u.cli.cl_import;
897 i = snprintf(page, count, "current_state: %s\n",
898 ptlrpc_import_state_name(imp->imp_state));
899 i += snprintf(page + i, count - i,
901 k = imp->imp_state_hist_idx;
902 for (j = 0; j < IMP_STATE_HIST_LEN; j++) {
903 struct import_state_hist *ish =
904 &imp->imp_state_hist[(k + j) % IMP_STATE_HIST_LEN];
905 if (ish->ish_state == 0)
907 i += snprintf(page + i, count - i, " - ["CFS_TIME_T", %s]\n",
909 ptlrpc_import_state_name(ish->ish_state));
912 LPROCFS_CLIMP_EXIT(obd);
916 int lprocfs_at_hist_helper(char *page, int count, int rc,
917 struct adaptive_timeout *at)
920 for (i = 0; i < AT_BINS; i++)
921 rc += snprintf(page + rc, count - rc, "%3u ", at->at_hist[i]);
922 rc += snprintf(page + rc, count - rc, "\n");
926 /* See also ptlrpc_lprocfs_rd_timeouts */
927 int lprocfs_rd_timeouts(char *page, char **start, off_t off, int count,
928 int *eof, void *data)
930 struct obd_device *obd = (struct obd_device *)data;
931 struct obd_import *imp;
932 unsigned int cur, worst;
937 LASSERT(obd != NULL);
938 LPROCFS_CLIMP_CHECK(obd);
939 imp = obd->u.cli.cl_import;
942 now = cfs_time_current_sec();
944 /* Some network health info for kicks */
945 s2dhms(&ts, now - imp->imp_last_reply_time);
946 rc += snprintf(page + rc, count - rc,
947 "%-10s : %ld, "DHMS_FMT" ago\n",
948 "last reply", imp->imp_last_reply_time, DHMS_VARS(&ts));
950 cur = at_get(&imp->imp_at.iat_net_latency);
951 worst = imp->imp_at.iat_net_latency.at_worst_ever;
952 worstt = imp->imp_at.iat_net_latency.at_worst_time;
953 s2dhms(&ts, now - worstt);
954 rc += snprintf(page + rc, count - rc,
955 "%-10s : cur %3u worst %3u (at %ld, "DHMS_FMT" ago) ",
956 "network", cur, worst, worstt, DHMS_VARS(&ts));
957 rc = lprocfs_at_hist_helper(page, count, rc,
958 &imp->imp_at.iat_net_latency);
960 for(i = 0; i < IMP_AT_MAX_PORTALS; i++) {
961 if (imp->imp_at.iat_portal[i] == 0)
963 cur = at_get(&imp->imp_at.iat_service_estimate[i]);
964 worst = imp->imp_at.iat_service_estimate[i].at_worst_ever;
965 worstt = imp->imp_at.iat_service_estimate[i].at_worst_time;
966 s2dhms(&ts, now - worstt);
967 rc += snprintf(page + rc, count - rc,
968 "portal %-2d : cur %3u worst %3u (at %ld, "
969 DHMS_FMT" ago) ", imp->imp_at.iat_portal[i],
970 cur, worst, worstt, DHMS_VARS(&ts));
971 rc = lprocfs_at_hist_helper(page, count, rc,
972 &imp->imp_at.iat_service_estimate[i]);
975 LPROCFS_CLIMP_EXIT(obd);
979 int lprocfs_rd_connect_flags(char *page, char **start, off_t off,
980 int count, int *eof, void *data)
982 struct obd_device *obd = data;
986 LPROCFS_CLIMP_CHECK(obd);
987 flags = obd->u.cli.cl_import->imp_connect_data.ocd_connect_flags;
988 ret = snprintf(page, count, "flags="LPX64"\n", flags);
989 ret += obd_connect_flags2str(page + ret, count - ret, flags, "\n");
990 ret += snprintf(page + ret, count - ret, "\n");
991 LPROCFS_CLIMP_EXIT(obd);
994 EXPORT_SYMBOL(lprocfs_rd_connect_flags);
996 int lprocfs_rd_num_exports(char *page, char **start, off_t off, int count,
997 int *eof, void *data)
999 struct obd_device *obd = data;
1001 LASSERT(obd != NULL);
1003 return snprintf(page, count, "%u\n", obd->obd_num_exports);
1006 int lprocfs_rd_numrefs(char *page, char **start, off_t off, int count,
1007 int *eof, void *data)
1009 struct obd_type *class = (struct obd_type*) data;
1011 LASSERT(class != NULL);
1013 return snprintf(page, count, "%d\n", class->typ_refcnt);
1016 int lprocfs_obd_setup(struct obd_device *obd, struct lprocfs_vars *list)
1020 LASSERT(obd != NULL);
1021 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1022 LASSERT(obd->obd_type->typ_procroot != NULL);
1024 obd->obd_proc_entry = lprocfs_register(obd->obd_name,
1025 obd->obd_type->typ_procroot,
1027 if (IS_ERR(obd->obd_proc_entry)) {
1028 rc = PTR_ERR(obd->obd_proc_entry);
1029 CERROR("error %d setting up lprocfs for %s\n",rc,obd->obd_name);
1030 obd->obd_proc_entry = NULL;
1035 int lprocfs_obd_cleanup(struct obd_device *obd)
1039 if (obd->obd_proc_exports_entry) {
1040 /* Should be no exports left */
1041 LASSERT(obd->obd_proc_exports_entry->subdir == NULL);
1042 lprocfs_remove(&obd->obd_proc_exports_entry);
1043 obd->obd_proc_exports_entry = NULL;
1045 if (obd->obd_proc_entry) {
1046 lprocfs_remove(&obd->obd_proc_entry);
1047 obd->obd_proc_entry = NULL;
1052 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
1054 CDEBUG(D_CONFIG, "stat %p - data %p/%p/%p\n", client_stat,
1055 client_stat->nid_proc, client_stat->nid_stats,
1056 client_stat->nid_brw_stats);
1058 LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
1059 "count %d\n", atomic_read(&client_stat->nid_exp_ref_count));
1061 hlist_del_init(&client_stat->nid_hash);
1063 if (client_stat->nid_proc)
1064 lprocfs_remove(&client_stat->nid_proc);
1066 if (client_stat->nid_stats)
1067 lprocfs_free_stats(&client_stat->nid_stats);
1069 if (client_stat->nid_brw_stats)
1070 OBD_FREE_PTR(client_stat->nid_brw_stats);
1072 if (client_stat->nid_ldlm_stats)
1073 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
1075 OBD_FREE_PTR(client_stat);
1080 void lprocfs_free_per_client_stats(struct obd_device *obd)
1082 struct nid_stat *stat;
1085 /* we need extra list - because hash_exit called to early */
1086 /* not need locking because all clients is died */
1087 while(!list_empty(&obd->obd_nid_stats)) {
1088 stat = list_entry(obd->obd_nid_stats.next,
1089 struct nid_stat, nid_list);
1090 list_del_init(&stat->nid_list);
1091 lprocfs_free_client_stats(stat);
1097 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num,
1098 enum lprocfs_stats_flags flags)
1100 struct lprocfs_stats *stats;
1101 unsigned int percpusize;
1103 unsigned int num_cpu;
1108 if (flags & LPROCFS_STATS_FLAG_NOPERCPU)
1111 num_cpu = num_possible_cpus();
1113 OBD_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_cpu]));
1117 if (flags & LPROCFS_STATS_FLAG_NOPERCPU) {
1118 stats->ls_flags = flags;
1119 spin_lock_init(&stats->ls_lock);
1120 /* Use this lock only if there are no percpu areas */
1122 stats->ls_flags = 0;
1125 percpusize = offsetof(struct lprocfs_percpu, lp_cntr[num]);
1127 percpusize = L1_CACHE_ALIGN(percpusize);
1129 for (i = 0; i < num_cpu; i++) {
1130 OBD_ALLOC(stats->ls_percpu[i], percpusize);
1131 if (stats->ls_percpu[i] == NULL) {
1132 for (j = 0; j < i; j++) {
1133 OBD_FREE(stats->ls_percpu[j], percpusize);
1134 stats->ls_percpu[j] = NULL;
1139 if (stats->ls_percpu[0] == NULL) {
1140 OBD_FREE(stats, offsetof(typeof(*stats),
1141 ls_percpu[num_cpu]));
1145 stats->ls_num = num;
1149 void lprocfs_free_stats(struct lprocfs_stats **statsh)
1151 struct lprocfs_stats *stats = *statsh;
1152 unsigned int num_cpu;
1153 unsigned int percpusize;
1156 if (stats == NULL || stats->ls_num == 0)
1160 if (stats->ls_flags & LPROCFS_STATS_FLAG_NOPERCPU)
1163 num_cpu = num_possible_cpus();
1165 percpusize = offsetof(struct lprocfs_percpu, lp_cntr[stats->ls_num]);
1167 percpusize = L1_CACHE_ALIGN(percpusize);
1168 for (i = 0; i < num_cpu; i++)
1169 OBD_FREE(stats->ls_percpu[i], percpusize);
1170 OBD_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_cpu]));
1173 void lprocfs_clear_stats(struct lprocfs_stats *stats)
1175 struct lprocfs_counter *percpu_cntr;
1177 unsigned int num_cpu;
1179 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU);
1181 for (i = 0; i < num_cpu; i++) {
1182 for (j = 0; j < stats->ls_num; j++) {
1183 percpu_cntr = &(stats->ls_percpu[i])->lp_cntr[j];
1184 atomic_inc(&percpu_cntr->lc_cntl.la_entry);
1185 percpu_cntr->lc_count = 0;
1186 percpu_cntr->lc_sum = 0;
1187 percpu_cntr->lc_min = LC_MIN_INIT;
1188 percpu_cntr->lc_max = 0;
1189 percpu_cntr->lc_sumsquare = 0;
1190 atomic_inc(&percpu_cntr->lc_cntl.la_exit);
1194 lprocfs_stats_unlock(stats);
1197 static ssize_t lprocfs_stats_seq_write(struct file *file, const char *buf,
1198 size_t len, loff_t *off)
1200 struct seq_file *seq = file->private_data;
1201 struct lprocfs_stats *stats = seq->private;
1203 lprocfs_clear_stats(stats);
1208 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
1210 struct lprocfs_stats *stats = p->private;
1211 /* return 1st cpu location */
1212 return (*pos >= stats->ls_num) ? NULL :
1213 &(stats->ls_percpu[0]->lp_cntr[*pos]);
1216 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
1220 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
1222 struct lprocfs_stats *stats = p->private;
1224 return (*pos >= stats->ls_num) ? NULL :
1225 &(stats->ls_percpu[0]->lp_cntr[*pos]);
1228 /* seq file export of one lprocfs counter */
1229 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
1231 struct lprocfs_stats *stats = p->private;
1232 struct lprocfs_counter *cntr = v;
1233 struct lprocfs_counter ret;
1236 if (cntr == &(stats->ls_percpu[0])->lp_cntr[0]) {
1238 do_gettimeofday(&now);
1239 rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
1240 "snapshot_time", now.tv_sec, now.tv_usec);
1244 idx = cntr - &(stats->ls_percpu[0])->lp_cntr[0];
1246 lprocfs_stats_collect(stats, idx, &ret);
1248 if (ret.lc_count == 0)
1251 rc = seq_printf(p, "%-25s "LPD64" samples [%s]", cntr->lc_name,
1252 ret.lc_count, cntr->lc_units);
1257 if ((cntr->lc_config & LPROCFS_CNTR_AVGMINMAX) && (ret.lc_count > 0)) {
1258 rc = seq_printf(p, " "LPD64" "LPD64" "LPD64,
1259 ret.lc_min, ret.lc_max, ret.lc_sum);
1262 if (cntr->lc_config & LPROCFS_CNTR_STDDEV)
1263 rc = seq_printf(p, " "LPD64, ret.lc_sumsquare);
1267 rc = seq_printf(p, "\n");
1269 return (rc < 0) ? rc : 0;
1272 struct seq_operations lprocfs_stats_seq_sops = {
1273 start: lprocfs_stats_seq_start,
1274 stop: lprocfs_stats_seq_stop,
1275 next: lprocfs_stats_seq_next,
1276 show: lprocfs_stats_seq_show,
1279 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
1281 struct proc_dir_entry *dp = PDE(inode);
1282 struct seq_file *seq;
1285 LPROCFS_ENTRY_AND_CHECK(dp);
1286 rc = seq_open(file, &lprocfs_stats_seq_sops);
1291 seq = file->private_data;
1292 seq->private = dp->data;
1296 struct file_operations lprocfs_stats_seq_fops = {
1297 .owner = THIS_MODULE,
1298 .open = lprocfs_stats_seq_open,
1300 .write = lprocfs_stats_seq_write,
1301 .llseek = seq_lseek,
1302 .release = lprocfs_seq_release,
1305 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
1306 struct lprocfs_stats *stats)
1308 struct proc_dir_entry *entry;
1309 LASSERT(root != NULL);
1311 entry = create_proc_entry(name, 0644, root);
1314 entry->proc_fops = &lprocfs_stats_seq_fops;
1315 entry->data = stats;
1319 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
1320 unsigned conf, const char *name, const char *units)
1322 struct lprocfs_counter *c;
1324 unsigned int num_cpu;
1326 LASSERT(stats != NULL);
1328 num_cpu = lprocfs_stats_lock(stats, LPROCFS_GET_NUM_CPU);
1330 for (i = 0; i < num_cpu; i++) {
1331 c = &(stats->ls_percpu[i]->lp_cntr[index]);
1332 c->lc_config = conf;
1335 c->lc_min = LC_MIN_INIT;
1338 c->lc_units = units;
1341 lprocfs_stats_unlock(stats);
1343 EXPORT_SYMBOL(lprocfs_counter_init);
1345 #define LPROCFS_OBD_OP_INIT(base, stats, op) \
1347 unsigned int coffset = base + OBD_COUNTER_OFFSET(op); \
1348 LASSERT(coffset < stats->ls_num); \
1349 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1352 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
1354 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
1355 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
1356 LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
1357 LPROCFS_OBD_OP_INIT(num_private_stats, stats, attach);
1358 LPROCFS_OBD_OP_INIT(num_private_stats, stats, detach);
1359 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
1360 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
1361 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
1362 LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
1363 LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
1364 LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
1365 LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
1366 LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
1367 LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
1368 LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
1369 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
1370 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
1371 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
1372 LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_delete);
1373 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
1374 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
1375 LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
1376 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
1377 LPROCFS_OBD_OP_INIT(num_private_stats, stats, checkmd);
1378 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preallocate);
1379 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precreate);
1380 LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
1381 LPROCFS_OBD_OP_INIT(num_private_stats, stats, create_async);
1382 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
1383 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
1384 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr_async);
1385 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
1386 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
1387 LPROCFS_OBD_OP_INIT(num_private_stats, stats, brw);
1388 LPROCFS_OBD_OP_INIT(num_private_stats, stats, merge_lvb);
1389 LPROCFS_OBD_OP_INIT(num_private_stats, stats, adjust_kms);
1390 LPROCFS_OBD_OP_INIT(num_private_stats, stats, punch);
1391 LPROCFS_OBD_OP_INIT(num_private_stats, stats, sync);
1392 LPROCFS_OBD_OP_INIT(num_private_stats, stats, migrate);
1393 LPROCFS_OBD_OP_INIT(num_private_stats, stats, copy);
1394 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iterate);
1395 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
1396 LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
1397 LPROCFS_OBD_OP_INIT(num_private_stats, stats, enqueue);
1398 LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata);
1399 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel);
1400 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel_unused);
1401 LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
1402 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
1403 LPROCFS_OBD_OP_INIT(num_private_stats, stats, extent_calc);
1404 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_init);
1405 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_connect);
1406 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_finish);
1407 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pin);
1408 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpin);
1409 LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
1410 LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
1411 LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
1412 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
1413 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotacheck);
1414 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
1415 LPROCFS_OBD_OP_INIT(num_private_stats, stats, quota_adjust_qunit);
1416 LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
1417 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
1418 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
1419 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
1420 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
1421 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
1422 LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
1425 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
1427 struct lprocfs_stats *stats;
1428 unsigned int num_stats;
1431 LASSERT(obd->obd_stats == NULL);
1432 LASSERT(obd->obd_proc_entry != NULL);
1433 LASSERT(obd->obd_cntr_base == 0);
1435 num_stats = ((int)sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
1436 num_private_stats - 1 /* o_owner */;
1437 stats = lprocfs_alloc_stats(num_stats, 0);
1441 lprocfs_init_ops_stats(num_private_stats, stats);
1443 for (i = num_private_stats; i < num_stats; i++) {
1444 /* If this LBUGs, it is likely that an obd
1445 * operation was added to struct obd_ops in
1446 * <obd.h>, and that the corresponding line item
1447 * LPROCFS_OBD_OP_INIT(.., .., opname)
1448 * is missing from the list above. */
1449 LASSERTF(stats->ls_percpu[0]->lp_cntr[i].lc_name != NULL,
1450 "Missing obd_stat initializer obd_op "
1451 "operation at offset %d.\n", i - num_private_stats);
1453 rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
1455 lprocfs_free_stats(&stats);
1457 obd->obd_stats = stats;
1458 obd->obd_cntr_base = num_private_stats;
1463 void lprocfs_free_obd_stats(struct obd_device *obd)
1466 lprocfs_free_stats(&obd->obd_stats);
1469 #define LPROCFS_MD_OP_INIT(base, stats, op) \
1471 unsigned int coffset = base + MD_COUNTER_OFFSET(op); \
1472 LASSERT(coffset < stats->ls_num); \
1473 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
1476 int lprocfs_alloc_md_stats(struct obd_device *obd,
1477 unsigned num_private_stats)
1479 struct lprocfs_stats *stats;
1480 unsigned int num_stats;
1483 LASSERT(obd->md_stats == NULL);
1484 LASSERT(obd->obd_proc_entry != NULL);
1485 LASSERT(obd->md_cntr_base == 0);
1487 num_stats = 1 + MD_COUNTER_OFFSET(revalidate_lock) +
1489 stats = lprocfs_alloc_stats(num_stats, 0);
1493 LPROCFS_MD_OP_INIT(num_private_stats, stats, getstatus);
1494 LPROCFS_MD_OP_INIT(num_private_stats, stats, change_cbdata);
1495 LPROCFS_MD_OP_INIT(num_private_stats, stats, close);
1496 LPROCFS_MD_OP_INIT(num_private_stats, stats, create);
1497 LPROCFS_MD_OP_INIT(num_private_stats, stats, done_writing);
1498 LPROCFS_MD_OP_INIT(num_private_stats, stats, enqueue);
1499 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr);
1500 LPROCFS_MD_OP_INIT(num_private_stats, stats, getattr_name);
1501 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_lock);
1502 LPROCFS_MD_OP_INIT(num_private_stats, stats, link);
1503 LPROCFS_MD_OP_INIT(num_private_stats, stats, rename);
1504 LPROCFS_MD_OP_INIT(num_private_stats, stats, is_subdir);
1505 LPROCFS_MD_OP_INIT(num_private_stats, stats, setattr);
1506 LPROCFS_MD_OP_INIT(num_private_stats, stats, sync);
1507 LPROCFS_MD_OP_INIT(num_private_stats, stats, readpage);
1508 LPROCFS_MD_OP_INIT(num_private_stats, stats, unlink);
1509 LPROCFS_MD_OP_INIT(num_private_stats, stats, setxattr);
1510 LPROCFS_MD_OP_INIT(num_private_stats, stats, getxattr);
1511 LPROCFS_MD_OP_INIT(num_private_stats, stats, init_ea_size);
1512 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_lustre_md);
1513 LPROCFS_MD_OP_INIT(num_private_stats, stats, free_lustre_md);
1514 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_open_replay_data);
1515 LPROCFS_MD_OP_INIT(num_private_stats, stats, clear_open_replay_data);
1516 LPROCFS_MD_OP_INIT(num_private_stats, stats, set_lock_data);
1517 LPROCFS_MD_OP_INIT(num_private_stats, stats, lock_match);
1518 LPROCFS_MD_OP_INIT(num_private_stats, stats, cancel_unused);
1519 LPROCFS_MD_OP_INIT(num_private_stats, stats, renew_capa);
1520 LPROCFS_MD_OP_INIT(num_private_stats, stats, unpack_capa);
1521 LPROCFS_MD_OP_INIT(num_private_stats, stats, get_remote_perm);
1522 LPROCFS_MD_OP_INIT(num_private_stats, stats, intent_getattr_async);
1523 LPROCFS_MD_OP_INIT(num_private_stats, stats, revalidate_lock);
1525 for (i = num_private_stats; i < num_stats; i++) {
1526 if (stats->ls_percpu[0]->lp_cntr[i].lc_name == NULL) {
1527 CERROR("Missing md_stat initializer md_op "
1528 "operation at offset %d. Aborting.\n",
1529 i - num_private_stats);
1533 rc = lprocfs_register_stats(obd->obd_proc_entry, "md_stats", stats);
1535 lprocfs_free_stats(&stats);
1537 obd->md_stats = stats;
1538 obd->md_cntr_base = num_private_stats;
1543 void lprocfs_free_md_stats(struct obd_device *obd)
1545 struct lprocfs_stats *stats = obd->md_stats;
1547 if (stats != NULL) {
1548 obd->md_stats = NULL;
1549 obd->md_cntr_base = 0;
1550 lprocfs_free_stats(&stats);
1554 void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
1556 lprocfs_counter_init(ldlm_stats,
1557 LDLM_ENQUEUE - LDLM_FIRST_OPC,
1558 0, "ldlm_enqueue", "reqs");
1559 lprocfs_counter_init(ldlm_stats,
1560 LDLM_CONVERT - LDLM_FIRST_OPC,
1561 0, "ldlm_convert", "reqs");
1562 lprocfs_counter_init(ldlm_stats,
1563 LDLM_CANCEL - LDLM_FIRST_OPC,
1564 0, "ldlm_cancel", "reqs");
1565 lprocfs_counter_init(ldlm_stats,
1566 LDLM_BL_CALLBACK - LDLM_FIRST_OPC,
1567 0, "ldlm_bl_callback", "reqs");
1568 lprocfs_counter_init(ldlm_stats,
1569 LDLM_CP_CALLBACK - LDLM_FIRST_OPC,
1570 0, "ldlm_cp_callback", "reqs");
1571 lprocfs_counter_init(ldlm_stats,
1572 LDLM_GL_CALLBACK - LDLM_FIRST_OPC,
1573 0, "ldlm_gl_callback", "reqs");
1576 int lprocfs_exp_rd_nid(char *page, char **start, off_t off, int count,
1577 int *eof, void *data)
1579 struct obd_export *exp = data;
1580 LASSERT(exp != NULL);
1582 return snprintf(page, count, "%s\n", obd_export_nid2str(exp));
1585 struct exp_uuid_cb_data {
1593 lprocfs_exp_rd_cb_data_init(struct exp_uuid_cb_data *cb_data, char *page,
1594 int count, int *eof, int *len)
1596 cb_data->page = page;
1597 cb_data->count = count;
1602 void lprocfs_exp_print_uuid(void *obj, void *cb_data)
1604 struct obd_export *exp = (struct obd_export *)obj;
1605 struct exp_uuid_cb_data *data = (struct exp_uuid_cb_data *)cb_data;
1607 if (exp->exp_nid_stats)
1608 *data->len += snprintf((data->page + *data->len),
1609 data->count, "%s\n",
1610 obd_uuid2str(&exp->exp_client_uuid));
1613 int lprocfs_exp_rd_uuid(char *page, char **start, off_t off, int count,
1614 int *eof, void *data)
1616 struct nid_stat *stats = (struct nid_stat *)data;
1617 struct exp_uuid_cb_data cb_data;
1618 struct obd_device *obd = stats->nid_obd;
1623 lprocfs_exp_rd_cb_data_init(&cb_data, page, count, eof, &len);
1624 lustre_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1625 lprocfs_exp_print_uuid, &cb_data);
1626 return (*cb_data.len);
1629 void lprocfs_exp_print_hash(void *obj, void *cb_data)
1631 struct exp_uuid_cb_data *data = cb_data;
1632 struct obd_export *exp = obj;
1635 lh = exp->exp_lock_hash;
1638 *data->len += lustre_hash_debug_header(data->page,
1641 *data->len += lustre_hash_debug_str(lh, data->page + *data->len,
1646 int lprocfs_exp_rd_hash(char *page, char **start, off_t off, int count,
1647 int *eof, void *data)
1649 struct nid_stat *stats = (struct nid_stat *)data;
1650 struct exp_uuid_cb_data cb_data;
1651 struct obd_device *obd = stats->nid_obd;
1656 lprocfs_exp_rd_cb_data_init(&cb_data, page, count, eof, &len);
1658 lustre_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1659 lprocfs_exp_print_hash, &cb_data);
1660 return (*cb_data.len);
1663 int lprocfs_nid_stats_clear_read(char *page, char **start, off_t off,
1664 int count, int *eof, void *data)
1667 return snprintf(page, count, "%s\n",
1668 "Write into this file to clear all nid stats and "
1669 "stale nid entries");
1671 EXPORT_SYMBOL(lprocfs_nid_stats_clear_read);
1673 void lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
1675 struct nid_stat *stat = obj;
1678 /* object has only hash + iterate_all references.
1679 * add/delete blocked by hash bucket lock */
1680 CDEBUG(D_INFO,"refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
1681 if (atomic_read(&stat->nid_exp_ref_count) == 2) {
1682 hlist_del_init(&stat->nid_hash);
1683 nidstat_putref(stat);
1684 spin_lock(&stat->nid_obd->obd_nid_lock);
1685 list_move(&stat->nid_list, data);
1686 spin_unlock(&stat->nid_obd->obd_nid_lock);
1690 /* we has reference to object - only clear data*/
1691 if (stat->nid_stats)
1692 lprocfs_clear_stats(stat->nid_stats);
1694 if (stat->nid_brw_stats) {
1695 for (i = 0; i < BRW_LAST; i++)
1696 lprocfs_oh_clear(&stat->nid_brw_stats->hist[i]);
1702 int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
1703 unsigned long count, void *data)
1705 struct obd_device *obd = (struct obd_device *)data;
1706 struct nid_stat *client_stat;
1707 CFS_LIST_HEAD(free_list);
1709 lustre_hash_for_each(obd->obd_nid_stats_hash,
1710 lprocfs_nid_stats_clear_write_cb, &free_list);
1712 while (!list_empty(&free_list)) {
1713 client_stat = list_entry(free_list.next, struct nid_stat,
1715 list_del_init(&client_stat->nid_list);
1716 lprocfs_free_client_stats(client_stat);
1721 EXPORT_SYMBOL(lprocfs_nid_stats_clear_write);
1723 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid, int *newnid)
1725 struct nid_stat *new_stat, *old_stat;
1726 struct obd_device *obd = NULL;
1727 cfs_proc_dir_entry_t *entry;
1733 if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
1734 !exp->exp_obd->obd_nid_stats_hash)
1737 /* not test against zero because eric say:
1738 * You may only test nid against another nid, or LNET_NID_ANY.
1739 * Anything else is nonsense.*/
1740 if (!nid || *nid == LNET_NID_ANY)
1745 CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
1747 OBD_ALLOC_PTR(new_stat);
1748 if (new_stat == NULL)
1751 new_stat->nid = *nid;
1752 new_stat->nid_obd = exp->exp_obd;
1753 atomic_set(&new_stat->nid_exp_ref_count, 0);
1755 old_stat = lustre_hash_findadd_unique(obd->obd_nid_stats_hash,
1756 nid, &new_stat->nid_hash);
1757 CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
1758 old_stat, libcfs_nid2str(*nid),
1759 atomic_read(&new_stat->nid_exp_ref_count));
1761 /* Return -EALREADY here so that we know that the /proc
1762 * entry already has been created */
1763 if (old_stat != new_stat) {
1764 spin_lock(&obd->obd_nid_lock);
1765 if (exp->exp_nid_stats != old_stat) {
1766 if (exp->exp_nid_stats)
1767 nidstat_putref(exp->exp_nid_stats);
1768 exp->exp_nid_stats = old_stat;
1770 /* lustre_hash_findadd_unique() has added
1771 * old_stat's refcount */
1772 nidstat_putref(old_stat);
1775 spin_unlock(&obd->obd_nid_lock);
1777 GOTO(destroy_new, rc = -EALREADY);
1779 /* not found - create */
1780 new_stat->nid_proc = lprocfs_register(libcfs_nid2str(*nid),
1781 obd->obd_proc_exports_entry,
1783 if (new_stat->nid_proc == NULL) {
1784 CERROR("Error making export directory for nid %s\n",
1785 libcfs_nid2str(*nid));
1786 GOTO(destroy_new_ns, rc = -ENOMEM);
1789 entry = lprocfs_add_simple(new_stat->nid_proc, "uuid",
1790 lprocfs_exp_rd_uuid, NULL, new_stat, NULL);
1791 if (IS_ERR(entry)) {
1792 CWARN("Error adding the NID stats file\n");
1793 rc = PTR_ERR(entry);
1794 GOTO(destroy_new_ns, rc);
1797 entry = lprocfs_add_simple(new_stat->nid_proc, "hash",
1798 lprocfs_exp_rd_hash, NULL, new_stat, NULL);
1799 if (IS_ERR(entry)) {
1800 CWARN("Error adding the hash file\n");
1801 rc = PTR_ERR(entry);
1802 GOTO(destroy_new_ns, rc);
1805 if (exp->exp_nid_stats)
1806 nidstat_putref(exp->exp_nid_stats);
1807 nidstat_getref(new_stat);
1808 exp->exp_nid_stats = new_stat;
1810 /* protect competitive add to list, not need locking on destroy */
1811 spin_lock(&obd->obd_nid_lock);
1812 list_add(&new_stat->nid_list, &obd->obd_nid_stats);
1813 spin_unlock(&obd->obd_nid_lock);
1818 if (new_stat->nid_proc != NULL)
1819 lprocfs_remove(&new_stat->nid_proc);
1820 lustre_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
1823 OBD_FREE_PTR(new_stat);
1827 int lprocfs_exp_cleanup(struct obd_export *exp)
1829 struct nid_stat *stat = exp->exp_nid_stats;
1831 if(!stat || !exp->exp_obd)
1834 nidstat_putref(exp->exp_nid_stats);
1835 exp->exp_nid_stats = NULL;
1836 lprocfs_free_md_stats(exp->exp_obd);
1841 int lprocfs_write_helper(const char *buffer, unsigned long count,
1844 return lprocfs_write_frac_helper(buffer, count, val, 1);
1847 int lprocfs_write_frac_helper(const char *buffer, unsigned long count,
1850 char kernbuf[20], *end, *pbuf;
1852 if (count > (sizeof(kernbuf) - 1))
1855 if (copy_from_user(kernbuf, buffer, count))
1858 kernbuf[count] = '\0';
1865 *val = (int)simple_strtoul(pbuf, &end, 10) * mult;
1869 if (end != NULL && *end == '.') {
1870 int temp_val, pow = 1;
1874 if (strlen(pbuf) > 5)
1875 pbuf[5] = '\0'; /*only allow 5bits fractional*/
1877 temp_val = (int)simple_strtoul(pbuf, &end, 10) * mult;
1880 for (i = 0; i < (end - pbuf); i++)
1883 *val += temp_val / pow;
1889 int lprocfs_read_frac_helper(char *buffer, unsigned long count, long val,
1892 long decimal_val, frac_val;
1898 decimal_val = val / mult;
1899 prtn = snprintf(buffer, count, "%ld", decimal_val);
1900 frac_val = val % mult;
1902 if (prtn < (count - 4) && frac_val > 0) {
1904 int i, temp_mult = 1, frac_bits = 0;
1906 temp_frac = frac_val * 10;
1907 buffer[prtn++] = '.';
1908 while (frac_bits < 2 && (temp_frac / mult) < 1 ) {
1909 /* only reserved 2 bits fraction */
1910 buffer[prtn++] ='0';
1915 * Need to think these cases :
1916 * 1. #echo x.00 > /proc/xxx output result : x
1917 * 2. #echo x.0x > /proc/xxx output result : x.0x
1918 * 3. #echo x.x0 > /proc/xxx output result : x.x
1919 * 4. #echo x.xx > /proc/xxx output result : x.xx
1920 * Only reserved 2 bits fraction.
1922 for (i = 0; i < (5 - prtn); i++)
1925 frac_bits = min((int)count - prtn, 3 - frac_bits);
1926 prtn += snprintf(buffer + prtn, frac_bits, "%ld",
1927 frac_val * temp_mult / mult);
1930 while(buffer[prtn] < '1' || buffer[prtn] > '9') {
1932 if (buffer[prtn] == '.') {
1939 buffer[prtn++] ='\n';
1943 int lprocfs_write_u64_helper(const char *buffer, unsigned long count,__u64 *val)
1945 return lprocfs_write_frac_u64_helper(buffer, count, val, 1);
1948 int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
1949 __u64 *val, int mult)
1951 char kernbuf[22], *end, *pbuf;
1952 __u64 whole, frac = 0, units;
1953 unsigned frac_d = 1;
1955 if (count > (sizeof(kernbuf) - 1))
1958 if (copy_from_user(kernbuf, buffer, count))
1961 kernbuf[count] = '\0';
1968 whole = simple_strtoull(pbuf, &end, 10);
1972 if (end != NULL && *end == '.') {
1976 /* need to limit frac_d to a __u32 */
1977 if (strlen(pbuf) > 10)
1980 frac = simple_strtoull(pbuf, &end, 10);
1981 /* count decimal places */
1982 for (i = 0; i < (end - pbuf); i++)
1999 /* Specified units override the multiplier */
2001 mult = mult < 0 ? -units : units;
2004 do_div(frac, frac_d);
2005 *val = whole * mult + frac;
2009 int lprocfs_seq_create(cfs_proc_dir_entry_t *parent, char *name, mode_t mode,
2010 struct file_operations *seq_fops, void *data)
2012 struct proc_dir_entry *entry;
2015 entry = create_proc_entry(name, mode, parent);
2018 entry->proc_fops = seq_fops;
2023 EXPORT_SYMBOL(lprocfs_seq_create);
2025 __inline__ int lprocfs_obd_seq_create(struct obd_device *dev, char *name,
2027 struct file_operations *seq_fops,
2030 return (lprocfs_seq_create(dev->obd_proc_entry, name,
2031 mode, seq_fops, data));
2033 EXPORT_SYMBOL(lprocfs_obd_seq_create);
2035 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
2037 if (value >= OBD_HIST_MAX)
2038 value = OBD_HIST_MAX - 1;
2040 spin_lock(&oh->oh_lock);
2041 oh->oh_buckets[value]++;
2042 spin_unlock(&oh->oh_lock);
2044 EXPORT_SYMBOL(lprocfs_oh_tally);
2046 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
2050 for (val = 0; ((1 << val) < value) && (val <= OBD_HIST_MAX); val++)
2053 lprocfs_oh_tally(oh, val);
2055 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
2057 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
2059 unsigned long ret = 0;
2062 for (i = 0; i < OBD_HIST_MAX; i++)
2063 ret += oh->oh_buckets[i];
2066 EXPORT_SYMBOL(lprocfs_oh_sum);
2068 void lprocfs_oh_clear(struct obd_histogram *oh)
2070 spin_lock(&oh->oh_lock);
2071 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
2072 spin_unlock(&oh->oh_lock);
2074 EXPORT_SYMBOL(lprocfs_oh_clear);
2076 int lprocfs_obd_rd_hash(char *page, char **start, off_t off,
2077 int count, int *eof, void *data)
2079 struct obd_device *obd = data;
2085 c += lustre_hash_debug_header(page, count);
2086 c += lustre_hash_debug_str(obd->obd_uuid_hash, page + c, count - c);
2087 c += lustre_hash_debug_str(obd->obd_nid_hash, page + c, count - c);
2088 c += lustre_hash_debug_str(obd->obd_nid_stats_hash, page+c, count-c);
2092 EXPORT_SYMBOL(lprocfs_obd_rd_hash);
2094 int lprocfs_obd_rd_recovery_status(char *page, char **start, off_t off,
2095 int count, int *eof, void *data)
2097 struct obd_device *obd = data;
2100 LASSERT(obd != NULL);
2101 LASSERT(count >= 0);
2103 /* Set start of user data returned to
2104 page + off since the user may have
2105 requested to read much smaller than
2106 what we need to read */
2107 *start = page + off;
2109 /* We know we are allocated a page here.
2110 Also we know that this function will
2111 not need to write more than a page
2112 so we can truncate at CFS_PAGE_SIZE. */
2113 size = min(count + (int)off + 1, (int)CFS_PAGE_SIZE);
2115 /* Initialize the page */
2116 memset(page, 0, size);
2118 if (lprocfs_obd_snprintf(&page, size, &len, "status: ") <= 0)
2120 if (obd->obd_max_recoverable_clients == 0) {
2121 if (lprocfs_obd_snprintf(&page, size, &len, "INACTIVE\n") <= 0)
2127 /* sampled unlocked, but really... */
2128 if (obd->obd_recovering == 0) {
2129 if (lprocfs_obd_snprintf(&page, size, &len, "COMPLETE\n") <= 0)
2131 if (lprocfs_obd_snprintf(&page, size, &len,
2132 "recovery_start: %lu\n",
2133 obd->obd_recovery_start) <= 0)
2135 if (lprocfs_obd_snprintf(&page, size, &len,
2136 "recovery_duration: %lu\n",
2137 obd->obd_recovery_end -
2138 obd->obd_recovery_start) <= 0)
2140 /* Number of clients that have completed recovery */
2141 if (lprocfs_obd_snprintf(&page, size, &len,
2142 "completed_clients: %d/%d\n",
2143 obd->obd_max_recoverable_clients -
2144 obd->obd_stale_clients,
2145 obd->obd_max_recoverable_clients) <= 0)
2147 if (lprocfs_obd_snprintf(&page, size, &len,
2148 "replayed_requests: %d\n",
2149 obd->obd_replayed_requests) <= 0)
2151 if (lprocfs_obd_snprintf(&page, size, &len,
2152 "last_transno: "LPD64"\n",
2153 obd->obd_next_recovery_transno - 1)<=0)
2155 if (lprocfs_obd_snprintf(&page, size, &len, "VBR: %s\n",
2156 obd->obd_version_recov ? "ON" : "OFF")<=0)
2161 if (lprocfs_obd_snprintf(&page, size, &len, "RECOVERING\n") <= 0)
2163 if (lprocfs_obd_snprintf(&page, size, &len, "recovery_start: %lu\n",
2164 obd->obd_recovery_start) <= 0)
2166 if (lprocfs_obd_snprintf(&page, size, &len, "time_remaining: %lu\n",
2167 cfs_time_current_sec() >= obd->obd_recovery_end ? 0 :
2168 obd->obd_recovery_end - cfs_time_current_sec()) <= 0)
2170 if (lprocfs_obd_snprintf(&page, size, &len,"connected_clients: %d/%d\n",
2171 obd->obd_connected_clients,
2172 obd->obd_max_recoverable_clients) <= 0)
2174 /* Number of clients that have completed recovery */
2175 if (lprocfs_obd_snprintf(&page, size, &len,"req_replay_clients: %d\n",
2176 atomic_read(&obd->obd_req_replay_clients))<= 0)
2178 if (lprocfs_obd_snprintf(&page, size, &len,"lock_repay_clients: %d\n",
2179 atomic_read(&obd->obd_lock_replay_clients))<=0)
2181 if (lprocfs_obd_snprintf(&page, size, &len,"completed_clients: %d\n",
2182 obd->obd_connected_clients -
2183 atomic_read(&obd->obd_lock_replay_clients))<=0)
2185 if (lprocfs_obd_snprintf(&page, size, &len,"evicted_clients: %d\n",
2186 obd->obd_stale_clients) <= 0)
2188 if (lprocfs_obd_snprintf(&page, size, &len,"replayed_requests: %d\n",
2189 obd->obd_replayed_requests) <= 0)
2191 if (lprocfs_obd_snprintf(&page, size, &len, "queued_requests: %d\n",
2192 obd->obd_requests_queued_for_recovery) <= 0)
2195 if (lprocfs_obd_snprintf(&page, size, &len, "next_transno: "LPD64"\n",
2196 obd->obd_next_recovery_transno) <= 0)
2202 return min(count, len - (int)off);
2204 EXPORT_SYMBOL(lprocfs_obd_rd_recovery_status);
2206 int lprocfs_obd_rd_recovery_maxtime(char *page, char **start, off_t off,
2207 int count, int *eof, void *data)
2209 struct obd_device *obd = data;
2210 LASSERT(obd != NULL);
2212 return snprintf(page, count, "%lu\n", obd->obd_recovery_max_time);
2214 EXPORT_SYMBOL(lprocfs_obd_rd_recovery_maxtime);
2216 int lprocfs_obd_wr_recovery_maxtime(struct file *file, const char *buffer,
2217 unsigned long count, void *data)
2219 struct obd_device *obd = data;
2221 LASSERT(obd != NULL);
2223 rc = lprocfs_write_helper(buffer, count, &val);
2227 obd->obd_recovery_max_time = val;
2230 EXPORT_SYMBOL(lprocfs_obd_wr_recovery_maxtime);
2233 /**** Changelogs *****/
2234 #define D_CHANGELOG 0
2236 /* How many records per seq_show. Too small, we spawn llog_process threads
2237 too often; too large, we run out of buffer space */
2238 #define CHANGELOG_CHUNK_SIZE 100
2240 static int changelog_show_cb(struct llog_handle *llh, struct llog_rec_hdr *hdr,
2243 struct seq_file *seq = (struct seq_file *)data;
2244 struct changelog_seq_iter *csi = seq->private;
2245 struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
2250 if ((rec->cr_hdr.lrh_type != CHANGELOG_REC) ||
2251 (rec->cr.cr_type >= CL_LAST)) {
2252 CERROR("Not a changelog rec %d/%d\n", rec->cr_hdr.lrh_type,
2257 CDEBUG(D_CHANGELOG, "rec="LPU64" start="LPU64" cat=%d:%d start=%d:%d\n",
2258 rec->cr.cr_index, csi->csi_startrec,
2259 llh->lgh_hdr->llh_cat_idx, llh->lgh_cur_idx,
2260 csi->csi_startcat, csi->csi_startidx);
2262 if (rec->cr.cr_index < csi->csi_startrec)
2263 /* Skip entries earlier than what we are interested in */
2265 if (rec->cr.cr_index == csi->csi_startrec) {
2266 /* Remember where we started, since seq_read will re-read
2267 * the data when it reallocs space. Sigh, if only there was
2268 * a way to tell seq_file how big the buf should be in the
2271 csi->csi_startcat = llh->lgh_hdr->llh_cat_idx;
2272 csi->csi_startidx = rec->cr_hdr.lrh_index - 1;
2274 if (csi->csi_wrote > CHANGELOG_CHUNK_SIZE) {
2275 /* Stop at some point with a reasonable seq_file buffer size.
2276 * Start from here the next time.
2278 csi->csi_endrec = rec->cr.cr_index - 1;
2279 csi->csi_startcat = llh->lgh_hdr->llh_cat_idx;
2280 csi->csi_startidx = rec->cr_hdr.lrh_index - 1;
2282 RETURN(LLOG_PROC_BREAK);
2285 CDEBUG(D_CHANGELOG, LPU64" %02d%-5s "LPU64" 0x%x t="DFID" p="DFID
2286 " %.*s\n", rec->cr.cr_index, rec->cr.cr_type,
2287 changelog_type2str(rec->cr.cr_type), rec->cr.cr_time,
2288 rec->cr.cr_flags & CLF_FLAGMASK,
2289 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid),
2290 rec->cr.cr_namelen, rec->cr.cr_name);
2292 cnt = sizeof(rec->cr) + rec->cr.cr_namelen;
2293 ptr = (char *)(&rec->cr);
2294 CDEBUG(D_CHANGELOG, "packed rec %d starting at %p\n", cnt, ptr);
2296 while ((cnt-- > 0) && (rc == 0)) {
2297 rc = seq_putc(seq, *ptr);
2302 /* Ran out of room in the seq buffer. seq_read will dump
2303 * the whole buffer and re-seq_start with a larger one;
2304 * no point in continuing the llog_process */
2305 CDEBUG(D_CHANGELOG, "rec="LPU64" overflow "LPU64"<-"LPU64"\n",
2306 rec->cr.cr_index, csi->csi_startrec, csi->csi_endrec);
2307 csi->csi_endrec = csi->csi_startrec - 1;
2309 RETURN(LLOG_PROC_BREAK);
2313 csi->csi_endrec = rec->cr.cr_index;
2318 static int changelog_seq_show(struct seq_file *seq, void *v)
2320 struct changelog_seq_iter *csi = seq->private;
2324 if (csi->csi_fill) {
2325 /* seq_read wants more data to fill his buffer. But we already
2326 filled the buf as much as we cared to; force seq_read to
2327 accept that by padding with 0's */
2328 while (seq_putc(seq, 0) == 0);
2332 /* Since we have to restart the llog_cat_process for each chunk of the
2333 seq_ functions, start from where we left off. */
2334 rc = llog_cat_process(csi->csi_llh, changelog_show_cb, seq,
2335 csi->csi_startcat, csi->csi_startidx);
2337 CDEBUG(D_CHANGELOG,"seq_show "LPU64"-"LPU64" cat=%d:%d wrote=%d rc=%d\n",
2338 csi->csi_startrec, csi->csi_endrec, csi->csi_startcat,
2339 csi->csi_startidx, csi->csi_wrote, rc);
2343 if (rc == LLOG_PROC_BREAK)
2344 /* more records left, but seq_show must return 0 */
2349 static void *changelog_seq_start(struct seq_file *seq, loff_t *pos)
2351 struct changelog_seq_iter *csi = seq->private;
2354 CDEBUG(D_CHANGELOG, "start "LPU64"-"LPU64" pos="LPU64"\n",
2355 csi->csi_startrec, csi->csi_endrec, *pos);
2360 /* no more records, seq_read should return 0 if buffer
2364 if (*pos > csi->csi_pos) {
2365 /* The seq_read implementation sucks. It may call start
2366 multiple times, using pos to indicate advances, if any,
2367 by arbitrarily increasing it by 1. So ignore the actual
2368 value of pos, and just register any increase as
2369 "seq_read wants the next values". */
2370 csi->csi_startrec = csi->csi_endrec + 1;
2371 csi->csi_pos = *pos;
2373 /* else use old startrec/startidx */
2378 static void changelog_seq_stop(struct seq_file *seq, void *v)
2380 struct changelog_seq_iter *csi = seq->private;
2382 CDEBUG(D_CHANGELOG, "stop "LPU64"-"LPU64"\n",
2383 csi->csi_startrec, csi->csi_endrec);
2386 static void *changelog_seq_next(struct seq_file *seq, void *v, loff_t *pos)
2388 struct changelog_seq_iter *csi = seq->private;
2390 CDEBUG(D_CHANGELOG, "next "LPU64"-"LPU64" pos="LPU64"\n",
2391 csi->csi_startrec, csi->csi_endrec, *pos);
2398 static struct seq_operations changelog_sops = {
2399 .start = changelog_seq_start,
2400 .stop = changelog_seq_stop,
2401 .next = changelog_seq_next,
2402 .show = changelog_seq_show,
2405 int changelog_seq_open(struct inode *inode, struct file *file,
2406 struct changelog_seq_iter **csih)
2408 struct changelog_seq_iter *csi;
2409 struct proc_dir_entry *dp = PDE(inode);
2410 struct seq_file *seq;
2413 LPROCFS_ENTRY_AND_CHECK(dp);
2415 rc = seq_open(file, &changelog_sops);
2423 lprocfs_seq_release(inode, file);
2427 csi->csi_dev = dp->data;
2428 seq = file->private_data;
2434 EXPORT_SYMBOL(changelog_seq_open);
2436 int changelog_seq_release(struct inode *inode, struct file *file)
2438 struct seq_file *seq = file->private_data;
2439 struct changelog_seq_iter *csi = seq->private;
2444 return lprocfs_seq_release(inode, file);
2446 EXPORT_SYMBOL(changelog_seq_release);
2448 #ifndef SEEK_CUR /* SLES10 needs this */
2453 loff_t changelog_seq_lseek(struct file *file, loff_t offset, int origin)
2455 struct seq_file *seq = (struct seq_file *)file->private_data;
2456 struct changelog_seq_iter *csi = seq->private;
2458 CDEBUG(D_CHANGELOG,"seek "LPU64"-"LPU64" off="LPU64":%d fpos="LPU64"\n",
2459 csi->csi_startrec, csi->csi_endrec, offset, origin, file->f_pos);
2465 offset += csi->csi_endrec;
2468 /* we don't know the last rec */
2479 csi->csi_startrec = offset;
2480 csi->csi_endrec = offset ? offset - 1 : 0;
2482 /* drop whatever is left in sucky seq_read's buffer */
2487 file->f_pos = csi->csi_startrec;
2488 return csi->csi_startrec;
2490 EXPORT_SYMBOL(changelog_seq_lseek);
2492 EXPORT_SYMBOL(lprocfs_register);
2493 EXPORT_SYMBOL(lprocfs_srch);
2494 EXPORT_SYMBOL(lprocfs_remove);
2495 EXPORT_SYMBOL(lprocfs_remove_proc_entry);
2496 EXPORT_SYMBOL(lprocfs_add_vars);
2497 EXPORT_SYMBOL(lprocfs_obd_setup);
2498 EXPORT_SYMBOL(lprocfs_obd_cleanup);
2499 EXPORT_SYMBOL(lprocfs_add_simple);
2500 EXPORT_SYMBOL(lprocfs_add_symlink);
2501 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
2502 EXPORT_SYMBOL(lprocfs_alloc_stats);
2503 EXPORT_SYMBOL(lprocfs_free_stats);
2504 EXPORT_SYMBOL(lprocfs_clear_stats);
2505 EXPORT_SYMBOL(lprocfs_register_stats);
2506 EXPORT_SYMBOL(lprocfs_init_ops_stats);
2507 EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
2508 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
2509 EXPORT_SYMBOL(lprocfs_alloc_md_stats);
2510 EXPORT_SYMBOL(lprocfs_free_obd_stats);
2511 EXPORT_SYMBOL(lprocfs_exp_setup);
2512 EXPORT_SYMBOL(lprocfs_exp_cleanup);
2514 EXPORT_SYMBOL(lprocfs_rd_u64);
2515 EXPORT_SYMBOL(lprocfs_rd_atomic);
2516 EXPORT_SYMBOL(lprocfs_wr_atomic);
2517 EXPORT_SYMBOL(lprocfs_rd_uint);
2518 EXPORT_SYMBOL(lprocfs_wr_uint);
2519 EXPORT_SYMBOL(lprocfs_rd_uuid);
2520 EXPORT_SYMBOL(lprocfs_rd_name);
2521 EXPORT_SYMBOL(lprocfs_rd_fstype);
2522 EXPORT_SYMBOL(lprocfs_rd_server_uuid);
2523 EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
2524 EXPORT_SYMBOL(lprocfs_rd_num_exports);
2525 EXPORT_SYMBOL(lprocfs_rd_numrefs);
2526 EXPORT_SYMBOL(lprocfs_at_hist_helper);
2527 EXPORT_SYMBOL(lprocfs_rd_import);
2528 EXPORT_SYMBOL(lprocfs_rd_state);
2529 EXPORT_SYMBOL(lprocfs_rd_timeouts);
2530 EXPORT_SYMBOL(lprocfs_rd_blksize);
2531 EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
2532 EXPORT_SYMBOL(lprocfs_rd_kbytesfree);
2533 EXPORT_SYMBOL(lprocfs_rd_kbytesavail);
2534 EXPORT_SYMBOL(lprocfs_rd_filestotal);
2535 EXPORT_SYMBOL(lprocfs_rd_filesfree);
2537 EXPORT_SYMBOL(lprocfs_write_helper);
2538 EXPORT_SYMBOL(lprocfs_write_frac_helper);
2539 EXPORT_SYMBOL(lprocfs_read_frac_helper);
2540 EXPORT_SYMBOL(lprocfs_write_u64_helper);
2541 EXPORT_SYMBOL(lprocfs_write_frac_u64_helper);
2542 EXPORT_SYMBOL(lprocfs_stats_collect);