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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 #define DEBUG_SUBSYSTEM S_LLITE
38 #include <lustre_lite.h>
39 #include <lprocfs_status.h>
40 #include <linux/seq_file.h>
41 #include <obd_support.h>
43 #include "llite_internal.h"
45 struct proc_dir_entry *proc_lustre_fs_root;
48 /* /proc/lustre/llite mount point registration */
49 extern struct file_operations vvp_dump_pgcache_file_ops;
50 struct file_operations ll_rw_extents_stats_fops;
51 struct file_operations ll_rw_extents_stats_pp_fops;
52 struct file_operations ll_rw_offset_stats_fops;
54 static int ll_blksize_seq_show(struct seq_file *m, void *v)
56 struct super_block *sb = (struct super_block *)m->private;
57 struct obd_statfs osfs;
61 rc = ll_statfs_internal(sb, &osfs,
62 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
65 rc = seq_printf(m, "%u\n", osfs.os_bsize);
69 LPROC_SEQ_FOPS_RO(ll_blksize);
71 static int ll_kbytestotal_seq_show(struct seq_file *m, void *v)
73 struct super_block *sb = (struct super_block *)m->private;
74 struct obd_statfs osfs;
78 rc = ll_statfs_internal(sb, &osfs,
79 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
82 __u32 blk_size = osfs.os_bsize >> 10;
83 __u64 result = osfs.os_blocks;
85 while (blk_size >>= 1)
88 rc = seq_printf(m, LPU64"\n", result);
92 LPROC_SEQ_FOPS_RO(ll_kbytestotal);
94 static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
96 struct super_block *sb = (struct super_block *)m->private;
97 struct obd_statfs osfs;
101 rc = ll_statfs_internal(sb, &osfs,
102 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
105 __u32 blk_size = osfs.os_bsize >> 10;
106 __u64 result = osfs.os_bfree;
108 while (blk_size >>= 1)
111 rc = seq_printf(m, LPU64"\n", result);
115 LPROC_SEQ_FOPS_RO(ll_kbytesfree);
117 static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
119 struct super_block *sb = (struct super_block *)m->private;
120 struct obd_statfs osfs;
124 rc = ll_statfs_internal(sb, &osfs,
125 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
128 __u32 blk_size = osfs.os_bsize >> 10;
129 __u64 result = osfs.os_bavail;
131 while (blk_size >>= 1)
134 rc = seq_printf(m, LPU64"\n", result);
138 LPROC_SEQ_FOPS_RO(ll_kbytesavail);
140 static int ll_filestotal_seq_show(struct seq_file *m, void *v)
142 struct super_block *sb = (struct super_block *)m->private;
143 struct obd_statfs osfs;
147 rc = ll_statfs_internal(sb, &osfs,
148 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
151 rc = seq_printf(m, LPU64"\n", osfs.os_files);
154 LPROC_SEQ_FOPS_RO(ll_filestotal);
156 static int ll_filesfree_seq_show(struct seq_file *m, void *v)
158 struct super_block *sb = (struct super_block *)m->private;
159 struct obd_statfs osfs;
163 rc = ll_statfs_internal(sb, &osfs,
164 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
167 rc = seq_printf(m, LPU64"\n", osfs.os_ffree);
170 LPROC_SEQ_FOPS_RO(ll_filesfree);
172 static int ll_client_type_seq_show(struct seq_file *m, void *v)
174 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
177 LASSERT(sbi != NULL);
179 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
180 rc = seq_printf(m, "remote client\n");
182 rc = seq_printf(m, "local client\n");
186 LPROC_SEQ_FOPS_RO(ll_client_type);
188 static int ll_fstype_seq_show(struct seq_file *m, void *v)
190 struct super_block *sb = (struct super_block *)m->private;
193 return seq_printf(m, "%s\n", sb->s_type->name);
195 LPROC_SEQ_FOPS_RO(ll_fstype);
197 static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
199 struct super_block *sb = (struct super_block *)m->private;
202 return seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
204 LPROC_SEQ_FOPS_RO(ll_sb_uuid);
206 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
208 struct super_block *sb = m->private;
211 * See description of statistical counters in struct cl_site, and
214 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
216 LPROC_SEQ_FOPS_RO(ll_site_stats);
218 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
220 struct super_block *sb = m->private;
221 struct ll_sb_info *sbi = ll_s2sbi(sb);
225 spin_lock(&sbi->ll_lock);
226 pages_number = sbi->ll_ra_info.ra_max_pages;
227 spin_unlock(&sbi->ll_lock);
229 mult = 1 << (20 - PAGE_CACHE_SHIFT);
230 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
233 static ssize_t ll_max_readahead_mb_seq_write(struct file *file, const char *buffer,
234 size_t count, loff_t *off)
236 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
237 struct ll_sb_info *sbi = ll_s2sbi(sb);
238 int mult, rc, pages_number;
240 mult = 1 << (20 - PAGE_CACHE_SHIFT);
241 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
245 if (pages_number < 0 || pages_number > totalram_pages / 2) {
246 CERROR("can't set file readahead more than %lu MB\n",
247 totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1)); /*1/2 of RAM*/
251 spin_lock(&sbi->ll_lock);
252 sbi->ll_ra_info.ra_max_pages = pages_number;
253 spin_unlock(&sbi->ll_lock);
257 LPROC_SEQ_FOPS(ll_max_readahead_mb);
259 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
261 struct super_block *sb = m->private;
262 struct ll_sb_info *sbi = ll_s2sbi(sb);
266 spin_lock(&sbi->ll_lock);
267 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
268 spin_unlock(&sbi->ll_lock);
270 mult = 1 << (20 - PAGE_CACHE_SHIFT);
271 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
274 static ssize_t ll_max_readahead_per_file_mb_seq_write(struct file *file,
276 size_t count, loff_t *off)
278 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
279 struct ll_sb_info *sbi = ll_s2sbi(sb);
280 int mult, rc, pages_number;
282 mult = 1 << (20 - PAGE_CACHE_SHIFT);
283 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
287 if (pages_number < 0 ||
288 pages_number > sbi->ll_ra_info.ra_max_pages) {
289 CERROR("can't set file readahead more than"
290 "max_read_ahead_mb %lu MB\n",
291 sbi->ll_ra_info.ra_max_pages);
295 spin_lock(&sbi->ll_lock);
296 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
297 spin_unlock(&sbi->ll_lock);
301 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
303 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *unused)
305 struct super_block *sb = m->private;
306 struct ll_sb_info *sbi = ll_s2sbi(sb);
310 spin_lock(&sbi->ll_lock);
311 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
312 spin_unlock(&sbi->ll_lock);
314 mult = 1 << (20 - PAGE_CACHE_SHIFT);
315 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
318 static ssize_t ll_max_read_ahead_whole_mb_seq_write(struct file *file,
320 size_t count, loff_t *off)
322 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
323 struct ll_sb_info *sbi = ll_s2sbi(sb);
324 int mult, rc, pages_number;
326 mult = 1 << (20 - PAGE_CACHE_SHIFT);
327 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
331 /* Cap this at the current max readahead window size, the readahead
332 * algorithm does this anyway so it's pointless to set it larger. */
333 if (pages_number < 0 ||
334 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
335 CERROR("can't set max_read_ahead_whole_mb more than "
336 "max_read_ahead_per_file_mb: %lu\n",
337 sbi->ll_ra_info.ra_max_pages_per_file >> (20 - PAGE_CACHE_SHIFT));
341 spin_lock(&sbi->ll_lock);
342 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
343 spin_unlock(&sbi->ll_lock);
347 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
349 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
351 struct super_block *sb = m->private;
352 struct ll_sb_info *sbi = ll_s2sbi(sb);
353 struct cl_client_cache *cache = &sbi->ll_cache;
354 int shift = 20 - PAGE_CACHE_SHIFT;
358 max_cached_mb = cache->ccc_lru_max >> shift;
359 unused_mb = atomic_read(&cache->ccc_lru_left) >> shift;
362 "max_cached_mb: %d\n"
365 "reclaim_count: %u\n",
366 atomic_read(&cache->ccc_users),
368 max_cached_mb - unused_mb,
370 cache->ccc_lru_shrinkers);
373 static ssize_t ll_max_cached_mb_seq_write(struct file *file, const char *buffer,
374 size_t count, loff_t *off)
376 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
377 struct ll_sb_info *sbi = ll_s2sbi(sb);
378 struct cl_client_cache *cache = &sbi->ll_cache;
379 int mult, rc, pages_number;
383 mult = 1 << (20 - PAGE_CACHE_SHIFT);
384 buffer = lprocfs_find_named_value(buffer, "max_cached_mb:", &count);
385 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
389 if (pages_number < 0 || pages_number > totalram_pages) {
390 CERROR("%s: can't set max cache more than %lu MB\n",
391 ll_get_fsname(sb, NULL, 0),
392 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
396 if (sbi->ll_dt_exp == NULL)
399 spin_lock(&sbi->ll_lock);
400 diff = pages_number - cache->ccc_lru_max;
401 spin_unlock(&sbi->ll_lock);
403 /* easy - add more LRU slots. */
405 atomic_add(diff, &cache->ccc_lru_left);
413 /* reduce LRU budget from free slots. */
417 ov = atomic_read(&cache->ccc_lru_left);
421 nv = ov > diff ? ov - diff : 0;
422 rc = atomic_cmpxchg(&cache->ccc_lru_left, ov, nv);
423 if (likely(ov == rc)) {
433 /* difficult - have to ask OSCs to drop LRU slots. */
435 rc = obd_set_info_async(NULL, sbi->ll_dt_exp,
436 sizeof(KEY_CACHE_LRU_SHRINK),
437 KEY_CACHE_LRU_SHRINK,
438 sizeof(tmp), &tmp, NULL);
445 spin_lock(&sbi->ll_lock);
446 cache->ccc_lru_max = pages_number;
447 spin_unlock(&sbi->ll_lock);
450 atomic_add(nrpages, &cache->ccc_lru_left);
454 LPROC_SEQ_FOPS(ll_max_cached_mb);
456 static int ll_checksum_seq_show(struct seq_file *m, void *v)
458 struct super_block *sb = m->private;
459 struct ll_sb_info *sbi = ll_s2sbi(sb);
461 return seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
464 static ssize_t ll_checksum_seq_write(struct file *file, const char *buffer,
465 size_t count, loff_t *off)
467 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
468 struct ll_sb_info *sbi = ll_s2sbi(sb);
475 rc = lprocfs_write_helper(buffer, count, &val);
479 sbi->ll_flags |= LL_SBI_CHECKSUM;
481 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
483 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
484 KEY_CHECKSUM, sizeof(val), &val, NULL);
486 CWARN("Failed to set OSC checksum flags: %d\n", rc);
490 LPROC_SEQ_FOPS(ll_checksum);
492 static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
494 struct super_block *sb = m->private;
496 return seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
499 static ssize_t ll_max_rw_chunk_seq_write(struct file *file, const char *buffer,
500 size_t count, loff_t *off)
502 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
505 rc = lprocfs_write_helper(buffer, count, &val);
508 ll_s2sbi(sb)->ll_max_rw_chunk = val;
511 LPROC_SEQ_FOPS(ll_max_rw_chunk);
513 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
515 struct super_block *sb = m->private;
517 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
518 return seq_printf(m, "%d\n",
519 ll_s2sbi(sb)->ll_stats_track_id);
521 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
522 return seq_printf(m, "0 (all)\n");
524 return seq_printf(m, "untracked\n");
528 static int ll_wr_track_id(const char *buffer, unsigned long count, void *data,
529 enum stats_track_type type)
531 struct super_block *sb = data;
534 rc = lprocfs_write_helper(buffer, count, &pid);
537 ll_s2sbi(sb)->ll_stats_track_id = pid;
539 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
541 ll_s2sbi(sb)->ll_stats_track_type = type;
542 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
546 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
548 return ll_rd_track_id(m, STATS_TRACK_PID);
551 static ssize_t ll_track_pid_seq_write(struct file *file, const char *buffer,
552 size_t count, loff_t *off)
554 struct seq_file *seq = file->private_data;
555 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
557 LPROC_SEQ_FOPS(ll_track_pid);
559 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
561 return ll_rd_track_id(m, STATS_TRACK_PPID);
564 static ssize_t ll_track_ppid_seq_write(struct file *file, const char *buffer,
565 size_t count, loff_t *off)
567 struct seq_file *seq = file->private_data;
568 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
570 LPROC_SEQ_FOPS(ll_track_ppid);
572 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
574 return ll_rd_track_id(m, STATS_TRACK_GID);
577 static ssize_t ll_track_gid_seq_write(struct file *file, const char *buffer,
578 size_t count, loff_t *off)
580 struct seq_file *seq = file->private_data;
581 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
583 LPROC_SEQ_FOPS(ll_track_gid);
585 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
587 struct super_block *sb = m->private;
588 struct ll_sb_info *sbi = ll_s2sbi(sb);
590 return seq_printf(m, "%u\n", sbi->ll_sa_max);
593 static ssize_t ll_statahead_max_seq_write(struct file *file, const char *buffer,
594 size_t count, loff_t *off)
596 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
597 struct ll_sb_info *sbi = ll_s2sbi(sb);
600 rc = lprocfs_write_helper(buffer, count, &val);
604 if (val >= 0 && val <= LL_SA_RPC_MAX)
605 sbi->ll_sa_max = val;
607 CERROR("Bad statahead_max value %d. Valid values are in the "
608 "range [0, %d]\n", val, LL_SA_RPC_MAX);
612 LPROC_SEQ_FOPS(ll_statahead_max);
614 static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
616 struct super_block *sb = m->private;
617 struct ll_sb_info *sbi = ll_s2sbi(sb);
619 return seq_printf(m, "%u\n",
620 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
623 static ssize_t ll_statahead_agl_seq_write(struct file *file, const char *buffer,
624 size_t count, loff_t *off)
626 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
627 struct ll_sb_info *sbi = ll_s2sbi(sb);
630 rc = lprocfs_write_helper(buffer, count, &val);
635 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
637 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
641 LPROC_SEQ_FOPS(ll_statahead_agl);
643 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
645 struct super_block *sb = m->private;
646 struct ll_sb_info *sbi = ll_s2sbi(sb);
649 "statahead total: %u\n"
650 "statahead wrong: %u\n"
652 atomic_read(&sbi->ll_sa_total),
653 atomic_read(&sbi->ll_sa_wrong),
654 atomic_read(&sbi->ll_agl_total));
656 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
658 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
660 struct super_block *sb = m->private;
661 struct ll_sb_info *sbi = ll_s2sbi(sb);
663 return seq_printf(m, "%u\n",
664 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
667 static ssize_t ll_lazystatfs_seq_write(struct file *file, const char *buffer,
668 size_t count, loff_t *off)
670 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
671 struct ll_sb_info *sbi = ll_s2sbi(sb);
674 rc = lprocfs_write_helper(buffer, count, &val);
679 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
681 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
685 LPROC_SEQ_FOPS(ll_lazystatfs);
687 static int ll_maxea_size_seq_show(struct seq_file *m, void *v)
689 struct super_block *sb = m->private;
690 struct ll_sb_info *sbi = ll_s2sbi(sb);
694 rc = ll_get_max_mdsize(sbi, &ealen);
698 return seq_printf(m, "%u\n", ealen);
700 LPROC_SEQ_FOPS_RO(ll_maxea_size);
702 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
704 const char *str[] = LL_SBI_FLAGS;
705 struct super_block *sb = m->private;
706 int flags = ll_s2sbi(sb)->ll_flags;
710 if (ARRAY_SIZE(str) <= i) {
711 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
712 "flags please.\n", ll_get_fsname(sb, NULL, 0));
717 seq_printf(m, "%s ", str[i]);
721 seq_printf(m, "\b\n");
724 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
726 static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
727 { "uuid", &ll_sb_uuid_fops, 0, 0 },
728 //{ "mntpt_path", ll_rd_path, 0, 0 },
729 { "fstype", &ll_fstype_fops, 0, 0 },
730 { "site", &ll_site_stats_fops, 0, 0 },
731 { "blocksize", &ll_blksize_fops, 0, 0 },
732 { "kbytestotal", &ll_kbytestotal_fops, 0, 0 },
733 { "kbytesfree", &ll_kbytesfree_fops, 0, 0 },
734 { "kbytesavail", &ll_kbytesavail_fops, 0, 0 },
735 { "filestotal", &ll_filestotal_fops, 0, 0 },
736 { "filesfree", &ll_filesfree_fops, 0, 0 },
737 { "client_type", &ll_client_type_fops, 0, 0 },
738 //{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
739 { "max_read_ahead_mb", &ll_max_readahead_mb_fops, 0 },
740 { "max_read_ahead_per_file_mb", &ll_max_readahead_per_file_mb_fops, 0 },
741 { "max_read_ahead_whole_mb", &ll_max_read_ahead_whole_mb_fops, 0 },
742 { "max_cached_mb", &ll_max_cached_mb_fops, 0 },
743 { "checksum_pages", &ll_checksum_fops, 0 },
744 { "max_rw_chunk", &ll_max_rw_chunk_fops, 0 },
745 { "stats_track_pid", &ll_track_pid_fops, 0 },
746 { "stats_track_ppid", &ll_track_ppid_fops, 0 },
747 { "stats_track_gid", &ll_track_gid_fops, 0 },
748 { "statahead_max", &ll_statahead_max_fops, 0 },
749 { "statahead_agl", &ll_statahead_agl_fops, 0 },
750 { "statahead_stats", &ll_statahead_stats_fops, 0, 0 },
751 { "lazystatfs", &ll_lazystatfs_fops, 0 },
752 { "max_easize", &ll_maxea_size_fops, 0, 0 },
753 { "sbi_flags", &ll_sbi_flags_fops, 0, 0 },
757 #define MAX_STRING_SIZE 128
759 struct llite_file_opcode {
763 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
765 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
766 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
767 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
769 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
771 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
773 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
775 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
777 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
779 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
780 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
781 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
782 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
783 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
784 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
785 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
786 /* inode operation */
787 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
788 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
789 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
790 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
791 /* dir inode operation */
792 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
793 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
794 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
795 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
796 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
797 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
798 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
799 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
800 /* special inode operation */
801 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
802 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
803 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
804 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
805 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
806 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
807 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
810 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
814 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
815 lprocfs_counter_add(sbi->ll_stats, op, count);
816 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
817 sbi->ll_stats_track_id == current->pid)
818 lprocfs_counter_add(sbi->ll_stats, op, count);
819 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
820 sbi->ll_stats_track_id == current->parent->pid)
821 lprocfs_counter_add(sbi->ll_stats, op, count);
822 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
823 sbi->ll_stats_track_id ==
824 from_kgid(&init_user_ns, current_gid()))
825 lprocfs_counter_add(sbi->ll_stats, op, count);
827 EXPORT_SYMBOL(ll_stats_ops_tally);
829 static const char *ra_stat_string[] = {
830 [RA_STAT_HIT] = "hits",
831 [RA_STAT_MISS] = "misses",
832 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
833 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
834 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
835 [RA_STAT_FAILED_MATCH] = "failed lock match",
836 [RA_STAT_DISCARDED] = "read but discarded",
837 [RA_STAT_ZERO_LEN] = "zero length file",
838 [RA_STAT_ZERO_WINDOW] = "zero size window",
839 [RA_STAT_EOF] = "read-ahead to EOF",
840 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
841 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
844 LPROC_SEQ_FOPS_RO_TYPE(llite, name);
845 LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
847 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
848 struct super_block *sb, char *osc, char *mdc)
850 struct lprocfs_vars lvars[2];
851 struct lustre_sb_info *lsi = s2lsi(sb);
852 struct ll_sb_info *sbi = ll_s2sbi(sb);
853 struct obd_device *obd;
854 struct proc_dir_entry *dir;
855 char name[MAX_STRING_SIZE + 1], *ptr;
856 int err, id, len, rc;
858 memset(lvars, 0, sizeof(lvars));
860 name[MAX_STRING_SIZE] = '\0';
861 lvars[0].name = name;
863 LASSERT(sbi != NULL);
864 LASSERT(mdc != NULL);
865 LASSERT(osc != NULL);
868 len = strlen(lsi->lsi_lmd->lmd_profile);
869 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
870 if (ptr && (strcmp(ptr, "-client") == 0))
874 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
875 lsi->lsi_lmd->lmd_profile, sb);
877 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
878 if (IS_ERR(sbi->ll_proc_root)) {
879 err = PTR_ERR(sbi->ll_proc_root);
880 sbi->ll_proc_root = NULL;
884 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
885 &vvp_dump_pgcache_file_ops, sbi);
887 CWARN("Error adding the dump_page_cache file\n");
889 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
890 &ll_rw_extents_stats_fops, sbi);
892 CWARN("Error adding the extent_stats file\n");
894 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
895 0644, &ll_rw_extents_stats_pp_fops, sbi);
897 CWARN("Error adding the extents_stats_per_process file\n");
899 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
900 &ll_rw_offset_stats_fops, sbi);
902 CWARN("Error adding the offset_stats file\n");
904 /* File operations stats */
905 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
906 LPROCFS_STATS_FLAG_NONE);
907 if (sbi->ll_stats == NULL)
908 GOTO(out, err = -ENOMEM);
909 /* do counter init */
910 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
911 __u32 type = llite_opcode_table[id].type;
913 if (type & LPROCFS_TYPE_REGS)
915 else if (type & LPROCFS_TYPE_BYTES)
917 else if (type & LPROCFS_TYPE_PAGES)
919 lprocfs_counter_init(sbi->ll_stats,
920 llite_opcode_table[id].opcode,
921 (type & LPROCFS_CNTR_AVGMINMAX),
922 llite_opcode_table[id].opname, ptr);
924 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
928 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
929 LPROCFS_STATS_FLAG_NONE);
930 if (sbi->ll_ra_stats == NULL)
931 GOTO(out, err = -ENOMEM);
933 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
934 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
935 ra_stat_string[id], "pages");
936 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
942 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
947 obd = class_name2obd(mdc);
949 LASSERT(obd != NULL);
950 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
951 LASSERT(obd->obd_type->typ_name != NULL);
953 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
955 GOTO(out, err = -ENOMEM);
957 snprintf(name, MAX_STRING_SIZE, "common_name");
958 lvars[0].fops = &llite_name_fops;
959 err = lprocfs_add_vars(dir, lvars, obd);
963 snprintf(name, MAX_STRING_SIZE, "uuid");
964 lvars[0].fops = &llite_uuid_fops;
965 err = lprocfs_add_vars(dir, lvars, obd);
970 obd = class_name2obd(osc);
972 LASSERT(obd != NULL);
973 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
974 LASSERT(obd->obd_type->typ_name != NULL);
976 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
978 GOTO(out, err = -ENOMEM);
980 snprintf(name, MAX_STRING_SIZE, "common_name");
981 lvars[0].fops = &llite_name_fops;
982 err = lprocfs_add_vars(dir, lvars, obd);
986 snprintf(name, MAX_STRING_SIZE, "uuid");
987 lvars[0].fops = &llite_uuid_fops;
988 err = lprocfs_add_vars(dir, lvars, obd);
991 lprocfs_remove(&sbi->ll_proc_root);
992 lprocfs_free_stats(&sbi->ll_ra_stats);
993 lprocfs_free_stats(&sbi->ll_stats);
998 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1000 if (sbi->ll_proc_root) {
1001 lprocfs_remove(&sbi->ll_proc_root);
1002 lprocfs_free_stats(&sbi->ll_ra_stats);
1003 lprocfs_free_stats(&sbi->ll_stats);
1006 #undef MAX_STRING_SIZE
1008 #define pct(a,b) (b ? a * 100 / b : 0)
1010 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1011 struct seq_file *seq, int which)
1013 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1014 unsigned long start, end, r, w;
1015 char *unitp = "KMGTPEZY";
1017 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1023 for(i = 0; i < LL_HIST_MAX; i++) {
1024 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1025 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1028 for(i = 0; i < LL_HIST_MAX; i++) {
1029 r = pp_info->pp_r_hist.oh_buckets[i];
1030 w = pp_info->pp_w_hist.oh_buckets[i];
1033 end = 1 << (i + LL_HIST_START - units);
1034 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1035 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1036 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1037 r, pct(r, read_tot), pct(read_cum, read_tot),
1038 w, pct(w, write_tot), pct(write_cum, write_tot));
1040 if (start == 1<<10) {
1045 if (read_cum == read_tot && write_cum == write_tot)
1050 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1053 struct ll_sb_info *sbi = seq->private;
1054 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1057 do_gettimeofday(&now);
1059 if (!sbi->ll_rw_stats_on) {
1060 seq_printf(seq, "disabled\n"
1061 "write anything in this file to activate, "
1062 "then 0 or \"[D/d]isabled\" to deactivate\n");
1065 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1066 now.tv_sec, (unsigned long)now.tv_usec);
1067 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1068 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1069 "extents", "calls", "%", "cum%",
1070 "calls", "%", "cum%");
1071 spin_lock(&sbi->ll_pp_extent_lock);
1072 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1073 if (io_extents->pp_extents[k].pid != 0) {
1074 seq_printf(seq, "\nPID: %d\n",
1075 io_extents->pp_extents[k].pid);
1076 ll_display_extents_info(io_extents, seq, k);
1079 spin_unlock(&sbi->ll_pp_extent_lock);
1083 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1084 const char *buf, size_t len,
1087 struct seq_file *seq = file->private_data;
1088 struct ll_sb_info *sbi = seq->private;
1089 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1091 int value = 1, rc = 0;
1093 rc = lprocfs_write_helper(buf, len, &value);
1094 if (rc < 0 && (strcmp(buf, "disabled") == 0 ||
1095 strcmp(buf, "Disabled") == 0))
1099 sbi->ll_rw_stats_on = 0;
1101 sbi->ll_rw_stats_on = 1;
1103 spin_lock(&sbi->ll_pp_extent_lock);
1104 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1105 io_extents->pp_extents[i].pid = 0;
1106 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1107 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1109 spin_unlock(&sbi->ll_pp_extent_lock);
1113 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1115 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1118 struct ll_sb_info *sbi = seq->private;
1119 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1121 do_gettimeofday(&now);
1123 if (!sbi->ll_rw_stats_on) {
1124 seq_printf(seq, "disabled\n"
1125 "write anything in this file to activate, "
1126 "then 0 or \"[D/d]isabled\" to deactivate\n");
1129 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1130 now.tv_sec, (unsigned long)now.tv_usec);
1132 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1133 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1134 "extents", "calls", "%", "cum%",
1135 "calls", "%", "cum%");
1136 spin_lock(&sbi->ll_lock);
1137 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1138 spin_unlock(&sbi->ll_lock);
1143 static ssize_t ll_rw_extents_stats_seq_write(struct file *file, const char *buf,
1144 size_t len, loff_t *off)
1146 struct seq_file *seq = file->private_data;
1147 struct ll_sb_info *sbi = seq->private;
1148 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1150 int value = 1, rc = 0;
1152 rc = lprocfs_write_helper(buf, len, &value);
1153 if (rc < 0 && (strcmp(buf, "disabled") == 0 ||
1154 strcmp(buf, "Disabled") == 0))
1158 sbi->ll_rw_stats_on = 0;
1160 sbi->ll_rw_stats_on = 1;
1161 spin_lock(&sbi->ll_pp_extent_lock);
1162 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1163 io_extents->pp_extents[i].pid = 0;
1164 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1165 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1167 spin_unlock(&sbi->ll_pp_extent_lock);
1172 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1174 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1175 struct ll_file_data *file, loff_t pos,
1176 size_t count, int rw)
1179 struct ll_rw_process_info *process;
1180 struct ll_rw_process_info *offset;
1181 int *off_count = &sbi->ll_rw_offset_entry_count;
1182 int *process_count = &sbi->ll_offset_process_count;
1183 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1185 if(!sbi->ll_rw_stats_on)
1187 process = sbi->ll_rw_process_info;
1188 offset = sbi->ll_rw_offset_info;
1190 spin_lock(&sbi->ll_pp_extent_lock);
1191 /* Extent statistics */
1192 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1193 if(io_extents->pp_extents[i].pid == pid) {
1201 sbi->ll_extent_process_count =
1202 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1203 cur = sbi->ll_extent_process_count;
1204 io_extents->pp_extents[cur].pid = pid;
1205 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1206 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1209 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1210 (i < (LL_HIST_MAX - 1)); i++);
1212 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1213 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1215 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1216 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1218 spin_unlock(&sbi->ll_pp_extent_lock);
1220 spin_lock(&sbi->ll_process_lock);
1221 /* Offset statistics */
1222 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1223 if (process[i].rw_pid == pid) {
1224 if (process[i].rw_last_file != file) {
1225 process[i].rw_range_start = pos;
1226 process[i].rw_last_file_pos = pos + count;
1227 process[i].rw_smallest_extent = count;
1228 process[i].rw_largest_extent = count;
1229 process[i].rw_offset = 0;
1230 process[i].rw_last_file = file;
1231 spin_unlock(&sbi->ll_process_lock);
1234 if (process[i].rw_last_file_pos != pos) {
1236 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1237 offset[*off_count].rw_op = process[i].rw_op;
1238 offset[*off_count].rw_pid = pid;
1239 offset[*off_count].rw_range_start =
1240 process[i].rw_range_start;
1241 offset[*off_count].rw_range_end =
1242 process[i].rw_last_file_pos;
1243 offset[*off_count].rw_smallest_extent =
1244 process[i].rw_smallest_extent;
1245 offset[*off_count].rw_largest_extent =
1246 process[i].rw_largest_extent;
1247 offset[*off_count].rw_offset =
1248 process[i].rw_offset;
1249 process[i].rw_op = rw;
1250 process[i].rw_range_start = pos;
1251 process[i].rw_smallest_extent = count;
1252 process[i].rw_largest_extent = count;
1253 process[i].rw_offset = pos -
1254 process[i].rw_last_file_pos;
1256 if(process[i].rw_smallest_extent > count)
1257 process[i].rw_smallest_extent = count;
1258 if(process[i].rw_largest_extent < count)
1259 process[i].rw_largest_extent = count;
1260 process[i].rw_last_file_pos = pos + count;
1261 spin_unlock(&sbi->ll_process_lock);
1265 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1266 process[*process_count].rw_pid = pid;
1267 process[*process_count].rw_op = rw;
1268 process[*process_count].rw_range_start = pos;
1269 process[*process_count].rw_last_file_pos = pos + count;
1270 process[*process_count].rw_smallest_extent = count;
1271 process[*process_count].rw_largest_extent = count;
1272 process[*process_count].rw_offset = 0;
1273 process[*process_count].rw_last_file = file;
1274 spin_unlock(&sbi->ll_process_lock);
1277 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1280 struct ll_sb_info *sbi = seq->private;
1281 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1282 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1285 do_gettimeofday(&now);
1287 if (!sbi->ll_rw_stats_on) {
1288 seq_printf(seq, "disabled\n"
1289 "write anything in this file to activate, "
1290 "then 0 or \"[D/d]isabled\" to deactivate\n");
1293 spin_lock(&sbi->ll_process_lock);
1295 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1296 now.tv_sec, (unsigned long)now.tv_usec);
1297 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1298 "R/W", "PID", "RANGE START", "RANGE END",
1299 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1300 /* We stored the discontiguous offsets here; print them first */
1301 for(i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1302 if (offset[i].rw_pid != 0)
1304 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1305 offset[i].rw_op == READ ? 'R' : 'W',
1307 offset[i].rw_range_start,
1308 offset[i].rw_range_end,
1309 (unsigned long)offset[i].rw_smallest_extent,
1310 (unsigned long)offset[i].rw_largest_extent,
1311 offset[i].rw_offset);
1313 /* Then print the current offsets for each process */
1314 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1315 if (process[i].rw_pid != 0)
1317 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1318 process[i].rw_op == READ ? 'R' : 'W',
1320 process[i].rw_range_start,
1321 process[i].rw_last_file_pos,
1322 (unsigned long)process[i].rw_smallest_extent,
1323 (unsigned long)process[i].rw_largest_extent,
1324 process[i].rw_offset);
1326 spin_unlock(&sbi->ll_process_lock);
1331 static ssize_t ll_rw_offset_stats_seq_write(struct file *file, const char *buf,
1332 size_t len, loff_t *off)
1334 struct seq_file *seq = file->private_data;
1335 struct ll_sb_info *sbi = seq->private;
1336 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1337 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1338 int value = 1, rc = 0;
1340 rc = lprocfs_write_helper(buf, len, &value);
1342 if (rc < 0 && (strcmp(buf, "disabled") == 0 ||
1343 strcmp(buf, "Disabled") == 0))
1347 sbi->ll_rw_stats_on = 0;
1349 sbi->ll_rw_stats_on = 1;
1351 spin_lock(&sbi->ll_process_lock);
1352 sbi->ll_offset_process_count = 0;
1353 sbi->ll_rw_offset_entry_count = 0;
1354 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1355 LL_PROCESS_HIST_MAX);
1356 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1357 LL_OFFSET_HIST_MAX);
1358 spin_unlock(&sbi->ll_process_lock);
1363 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1365 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
1367 lvars->module_vars = NULL;
1368 lvars->obd_vars = lprocfs_llite_obd_vars;
1370 #endif /* LPROCFS */