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) 2012, 2014, 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 <linux/version.h>
39 #include <lustre_param.h>
40 #include <lprocfs_status.h>
41 #include <obd_support.h>
43 #include "llite_internal.h"
44 #include "vvp_internal.h"
46 struct proc_dir_entry *proc_lustre_fs_root;
49 /* /proc/lustre/llite mount point registration */
50 static const struct file_operations ll_rw_extents_stats_fops;
51 static const struct file_operations ll_rw_extents_stats_pp_fops;
52 static const 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 = 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);
68 LPROC_SEQ_FOPS_RO(ll_blksize);
70 static int ll_kbytestotal_seq_show(struct seq_file *m, void *v)
72 struct super_block *sb = m->private;
73 struct obd_statfs osfs;
77 rc = ll_statfs_internal(sb, &osfs,
78 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
81 __u32 blk_size = osfs.os_bsize >> 10;
82 __u64 result = osfs.os_blocks;
84 while (blk_size >>= 1)
87 rc = seq_printf(m, LPU64"\n", result);
91 LPROC_SEQ_FOPS_RO(ll_kbytestotal);
93 static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
95 struct super_block *sb = m->private;
96 struct obd_statfs osfs;
100 rc = ll_statfs_internal(sb, &osfs,
101 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
104 __u32 blk_size = osfs.os_bsize >> 10;
105 __u64 result = osfs.os_bfree;
107 while (blk_size >>= 1)
110 rc = seq_printf(m, LPU64"\n", result);
114 LPROC_SEQ_FOPS_RO(ll_kbytesfree);
116 static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
118 struct super_block *sb = m->private;
119 struct obd_statfs osfs;
123 rc = ll_statfs_internal(sb, &osfs,
124 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
127 __u32 blk_size = osfs.os_bsize >> 10;
128 __u64 result = osfs.os_bavail;
130 while (blk_size >>= 1)
133 rc = seq_printf(m, LPU64"\n", result);
137 LPROC_SEQ_FOPS_RO(ll_kbytesavail);
139 static int ll_filestotal_seq_show(struct seq_file *m, void *v)
141 struct super_block *sb = m->private;
142 struct obd_statfs osfs;
146 rc = ll_statfs_internal(sb, &osfs,
147 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
150 rc = seq_printf(m, LPU64"\n", osfs.os_files);
153 LPROC_SEQ_FOPS_RO(ll_filestotal);
155 static int ll_filesfree_seq_show(struct seq_file *m, void *v)
157 struct super_block *sb = m->private;
158 struct obd_statfs osfs;
162 rc = ll_statfs_internal(sb, &osfs,
163 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
166 rc = seq_printf(m, LPU64"\n", osfs.os_ffree);
169 LPROC_SEQ_FOPS_RO(ll_filesfree);
171 static int ll_client_type_seq_show(struct seq_file *m, void *v)
173 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
176 LASSERT(sbi != NULL);
178 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
179 rc = seq_printf(m, "remote client\n");
181 rc = seq_printf(m, "local client\n");
184 LPROC_SEQ_FOPS_RO(ll_client_type);
186 static int ll_fstype_seq_show(struct seq_file *m, void *v)
188 struct super_block *sb = m->private;
191 return seq_printf(m, "%s\n", sb->s_type->name);
193 LPROC_SEQ_FOPS_RO(ll_fstype);
195 static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
197 struct super_block *sb = m->private;
200 return seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
202 LPROC_SEQ_FOPS_RO(ll_sb_uuid);
204 static int ll_xattr_cache_seq_show(struct seq_file *m, void *v)
206 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
208 return seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
211 static ssize_t ll_xattr_cache_seq_write(struct file *file,
212 const char __user *buffer,
213 size_t count, loff_t *off)
215 struct seq_file *m = file->private_data;
216 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
219 rc = lprocfs_write_helper(buffer, count, &val);
223 if (val != 0 && val != 1)
226 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
229 sbi->ll_xattr_cache_enabled = val;
233 LPROC_SEQ_FOPS(ll_xattr_cache);
235 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
237 struct super_block *sb = m->private;
240 * See description of statistical counters in struct cl_site, and
243 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
245 LPROC_SEQ_FOPS_RO(ll_site_stats);
247 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
249 struct super_block *sb = m->private;
250 struct ll_sb_info *sbi = ll_s2sbi(sb);
254 spin_lock(&sbi->ll_lock);
255 pages_number = sbi->ll_ra_info.ra_max_pages;
256 spin_unlock(&sbi->ll_lock);
258 mult = 1 << (20 - PAGE_CACHE_SHIFT);
259 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
263 ll_max_readahead_mb_seq_write(struct file *file, const char __user *buffer,
264 size_t count, loff_t *off)
266 struct seq_file *m = file->private_data;
267 struct super_block *sb = m->private;
268 struct ll_sb_info *sbi = ll_s2sbi(sb);
274 pages_shift = 20 - PAGE_CACHE_SHIFT;
275 rc = lprocfs_write_frac_u64_helper(buffer, count, &val,
282 pages_number = (long)val;
284 if (pages_number < 0 || pages_number > totalram_pages / 2) {
286 CERROR("%s: can't set max_readahead_mb=%lu > %luMB\n",
287 ll_get_fsname(sb, NULL, 0), pages_number >> pages_shift,
288 totalram_pages >> (pages_shift + 1));
292 spin_lock(&sbi->ll_lock);
293 sbi->ll_ra_info.ra_max_pages = pages_number;
294 spin_unlock(&sbi->ll_lock);
297 LPROC_SEQ_FOPS(ll_max_readahead_mb);
299 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
301 struct super_block *sb = m->private;
302 struct ll_sb_info *sbi = ll_s2sbi(sb);
306 spin_lock(&sbi->ll_lock);
307 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
308 spin_unlock(&sbi->ll_lock);
310 mult = 1 << (20 - PAGE_CACHE_SHIFT);
311 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
315 ll_max_readahead_per_file_mb_seq_write(struct file *file,
316 const char __user *buffer,
317 size_t count, loff_t *off)
319 struct seq_file *m = file->private_data;
320 struct super_block *sb = m->private;
321 struct ll_sb_info *sbi = ll_s2sbi(sb);
322 int pages_shift, rc, pages_number;
324 pages_shift = 20 - PAGE_CACHE_SHIFT;
325 rc = lprocfs_write_frac_helper(buffer, count, &pages_number,
330 if (pages_number < 0 || pages_number > sbi->ll_ra_info.ra_max_pages) {
331 CERROR("%s: can't set max_readahead_per_file_mb=%u > "
332 "max_read_ahead_mb=%lu\n", ll_get_fsname(sb, NULL, 0),
333 pages_number >> pages_shift,
334 sbi->ll_ra_info.ra_max_pages >> pages_shift);
338 spin_lock(&sbi->ll_lock);
339 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
340 spin_unlock(&sbi->ll_lock);
343 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
345 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *v)
347 struct super_block *sb = m->private;
348 struct ll_sb_info *sbi = ll_s2sbi(sb);
352 spin_lock(&sbi->ll_lock);
353 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
354 spin_unlock(&sbi->ll_lock);
356 mult = 1 << (20 - PAGE_CACHE_SHIFT);
357 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
361 ll_max_read_ahead_whole_mb_seq_write(struct file *file,
362 const char __user *buffer,
363 size_t count, loff_t *off)
365 struct seq_file *m = file->private_data;
366 struct super_block *sb = m->private;
367 struct ll_sb_info *sbi = ll_s2sbi(sb);
368 int pages_shift, rc, pages_number;
370 pages_shift = 20 - PAGE_CACHE_SHIFT;
371 rc = lprocfs_write_frac_helper(buffer, count, &pages_number,
376 /* Cap this at the current max readahead window size, the readahead
377 * algorithm does this anyway so it's pointless to set it larger. */
378 if (pages_number < 0 ||
379 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
380 CERROR("%s: can't set max_read_ahead_whole_mb=%u > "
381 "max_read_ahead_per_file_mb=%lu\n",
382 ll_get_fsname(sb, NULL, 0),
383 pages_number >> pages_shift,
384 sbi->ll_ra_info.ra_max_pages_per_file >> pages_shift);
388 spin_lock(&sbi->ll_lock);
389 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
390 spin_unlock(&sbi->ll_lock);
393 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
395 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
397 struct super_block *sb = m->private;
398 struct ll_sb_info *sbi = ll_s2sbi(sb);
399 struct cl_client_cache *cache = &sbi->ll_cache;
400 int shift = 20 - PAGE_CACHE_SHIFT;
404 max_cached_mb = cache->ccc_lru_max >> shift;
405 unused_mb = atomic_long_read(&cache->ccc_lru_left) >> shift;
408 "max_cached_mb: %ld\n"
411 "reclaim_count: %u\n",
412 atomic_read(&cache->ccc_users),
414 max_cached_mb - unused_mb,
416 cache->ccc_lru_shrinkers);
420 ll_max_cached_mb_seq_write(struct file *file, const char __user *buffer,
421 size_t count, loff_t *off)
423 struct seq_file *m = file->private_data;
424 struct super_block *sb = m->private;
425 struct ll_sb_info *sbi = ll_s2sbi(sb);
426 struct cl_client_cache *cache = &sbi->ll_cache;
438 if (count >= sizeof(kernbuf))
441 if (copy_from_user(kernbuf, buffer, count))
445 mult = 1 << (20 - PAGE_CACHE_SHIFT);
446 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
448 rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
454 pages_number = (long)val;
456 if (pages_number < 0 || pages_number > totalram_pages) {
457 CERROR("%s: can't set max cache more than %lu MB\n",
458 ll_get_fsname(sb, NULL, 0),
459 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
462 /* Allow enough cache so clients can make well-formed RPCs */
463 pages_number = max_t(long, pages_number, PTLRPC_MAX_BRW_PAGES);
465 spin_lock(&sbi->ll_lock);
466 diff = pages_number - cache->ccc_lru_max;
467 spin_unlock(&sbi->ll_lock);
469 /* easy - add more LRU slots. */
471 atomic_long_add(diff, &cache->ccc_lru_left);
475 env = cl_env_get(&refcheck);
483 /* reduce LRU budget from free slots. */
487 ov = atomic_long_read(&cache->ccc_lru_left);
491 nv = ov > diff ? ov - diff : 0;
492 rc = atomic_long_cmpxchg(&cache->ccc_lru_left, ov, nv);
493 if (likely(ov == rc)) {
503 if (sbi->ll_dt_exp == NULL) { /* being initialized */
508 /* difficult - have to ask OSCs to drop LRU slots. */
510 rc = obd_set_info_async(env, sbi->ll_dt_exp,
511 sizeof(KEY_CACHE_LRU_SHRINK),
512 KEY_CACHE_LRU_SHRINK,
513 sizeof(tmp), &tmp, NULL);
517 cl_env_put(env, &refcheck);
521 spin_lock(&sbi->ll_lock);
522 cache->ccc_lru_max = pages_number;
523 spin_unlock(&sbi->ll_lock);
526 atomic_long_add(nrpages, &cache->ccc_lru_left);
530 LPROC_SEQ_FOPS(ll_max_cached_mb);
532 static int ll_checksum_seq_show(struct seq_file *m, void *v)
534 struct super_block *sb = m->private;
535 struct ll_sb_info *sbi = ll_s2sbi(sb);
537 return seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
540 static ssize_t ll_checksum_seq_write(struct file *file,
541 const char __user *buffer,
542 size_t count, loff_t *off)
544 struct seq_file *m = file->private_data;
545 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
552 rc = lprocfs_write_helper(buffer, count, &val);
556 sbi->ll_flags |= LL_SBI_CHECKSUM;
558 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
560 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
561 KEY_CHECKSUM, sizeof(val), &val, NULL);
563 CWARN("Failed to set OSC checksum flags: %d\n", rc);
567 LPROC_SEQ_FOPS(ll_checksum);
569 static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
571 struct super_block *sb = m->private;
573 return seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
576 static ssize_t ll_max_rw_chunk_seq_write(struct file *file,
577 const char __user *buffer,
578 size_t count, loff_t *off)
580 struct seq_file *m = file->private_data;
581 struct super_block *sb = m->private;
584 rc = lprocfs_write_helper(buffer, count, &val);
587 ll_s2sbi(sb)->ll_max_rw_chunk = val;
590 LPROC_SEQ_FOPS(ll_max_rw_chunk);
592 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
594 struct super_block *sb = m->private;
596 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
597 return seq_printf(m, "%d\n",
598 ll_s2sbi(sb)->ll_stats_track_id);
599 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
600 return seq_printf(m, "0 (all)\n");
602 return seq_printf(m, "untracked\n");
606 static int ll_wr_track_id(const char __user *buffer, unsigned long count,
607 void *data, enum stats_track_type type)
609 struct super_block *sb = data;
612 rc = lprocfs_write_helper(buffer, count, &pid);
615 ll_s2sbi(sb)->ll_stats_track_id = pid;
617 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
619 ll_s2sbi(sb)->ll_stats_track_type = type;
620 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
624 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
626 return ll_rd_track_id(m, STATS_TRACK_PID);
629 static ssize_t ll_track_pid_seq_write(struct file *file,
630 const char __user *buffer,
631 size_t count, loff_t *off)
633 struct seq_file *seq = file->private_data;
634 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
636 LPROC_SEQ_FOPS(ll_track_pid);
638 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
640 return ll_rd_track_id(m, STATS_TRACK_PPID);
643 static ssize_t ll_track_ppid_seq_write(struct file *file,
644 const char __user *buffer,
645 size_t count, loff_t *off)
647 struct seq_file *seq = file->private_data;
648 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
650 LPROC_SEQ_FOPS(ll_track_ppid);
652 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
654 return ll_rd_track_id(m, STATS_TRACK_GID);
657 static ssize_t ll_track_gid_seq_write(struct file *file,
658 const char __user *buffer,
659 size_t count, loff_t *off)
661 struct seq_file *seq = file->private_data;
662 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
664 LPROC_SEQ_FOPS(ll_track_gid);
666 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
668 struct super_block *sb = m->private;
669 struct ll_sb_info *sbi = ll_s2sbi(sb);
671 return seq_printf(m, "%u\n", sbi->ll_sa_max);
674 static ssize_t ll_statahead_max_seq_write(struct file *file,
675 const char __user *buffer,
676 size_t count, loff_t *off)
678 struct seq_file *m = file->private_data;
679 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
682 rc = lprocfs_write_helper(buffer, count, &val);
686 if (val >= 0 && val <= LL_SA_RPC_MAX)
687 sbi->ll_sa_max = val;
689 CERROR("Bad statahead_max value %d. Valid values are in the "
690 "range [0, %d]\n", val, LL_SA_RPC_MAX);
694 LPROC_SEQ_FOPS(ll_statahead_max);
696 static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
698 struct super_block *sb = m->private;
699 struct ll_sb_info *sbi = ll_s2sbi(sb);
701 return seq_printf(m, "%u\n",
702 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
705 static ssize_t ll_statahead_agl_seq_write(struct file *file,
706 const char __user *buffer,
707 size_t count, loff_t *off)
709 struct seq_file *m = file->private_data;
710 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
713 rc = lprocfs_write_helper(buffer, count, &val);
718 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
720 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
724 LPROC_SEQ_FOPS(ll_statahead_agl);
726 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
728 struct super_block *sb = m->private;
729 struct ll_sb_info *sbi = ll_s2sbi(sb);
732 "statahead total: %u\n"
733 "statahead wrong: %u\n"
735 atomic_read(&sbi->ll_sa_total),
736 atomic_read(&sbi->ll_sa_wrong),
737 atomic_read(&sbi->ll_agl_total));
739 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
741 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
743 struct super_block *sb = m->private;
744 struct ll_sb_info *sbi = ll_s2sbi(sb);
746 return seq_printf(m, "%u\n",
747 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
750 static ssize_t ll_lazystatfs_seq_write(struct file *file,
751 const char __user *buffer,
752 size_t count, loff_t *off)
754 struct seq_file *m = file->private_data;
755 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
758 rc = lprocfs_write_helper(buffer, count, &val);
763 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
765 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
769 LPROC_SEQ_FOPS(ll_lazystatfs);
771 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
773 struct super_block *sb = m->private;
774 struct ll_sb_info *sbi = ll_s2sbi(sb);
778 rc = ll_get_max_mdsize(sbi, &ealen);
782 return seq_printf(m, "%u\n", ealen);
784 LPROC_SEQ_FOPS_RO(ll_max_easize);
786 static int ll_defult_easize_seq_show(struct seq_file *m, void *v)
788 struct super_block *sb = m->private;
789 struct ll_sb_info *sbi = ll_s2sbi(sb);
793 rc = ll_get_default_mdsize(sbi, &ealen);
797 return seq_printf(m, "%u\n", ealen);
799 LPROC_SEQ_FOPS_RO(ll_defult_easize);
801 static int ll_max_cookiesize_seq_show(struct seq_file *m, void *v)
803 struct super_block *sb = m->private;
804 struct ll_sb_info *sbi = ll_s2sbi(sb);
805 unsigned int cookielen;
808 rc = ll_get_max_cookiesize(sbi, &cookielen);
812 return seq_printf(m, "%u\n", cookielen);
814 LPROC_SEQ_FOPS_RO(ll_max_cookiesize);
816 static int ll_defult_cookiesize_seq_show(struct seq_file *m, void *v)
818 struct super_block *sb = m->private;
819 struct ll_sb_info *sbi = ll_s2sbi(sb);
820 unsigned int cookielen;
823 rc = ll_get_default_cookiesize(sbi, &cookielen);
827 return seq_printf(m, "%u\n", cookielen);
829 LPROC_SEQ_FOPS_RO(ll_defult_cookiesize);
831 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
833 const char *str[] = LL_SBI_FLAGS;
834 struct super_block *sb = m->private;
835 int flags = ll_s2sbi(sb)->ll_flags;
839 if (ARRAY_SIZE(str) <= i) {
840 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
841 "flags please.\n", ll_get_fsname(sb, NULL, 0));
846 seq_printf(m, "%s ", str[i]);
850 seq_printf(m, "\b\n");
853 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
855 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
857 struct super_block *sb = m->private;
858 struct ll_sb_info *sbi = ll_s2sbi(sb);
859 struct cl_client_cache *cache = &sbi->ll_cache;
863 pages = atomic_long_read(&cache->ccc_unstable_nr);
864 mb = (pages * PAGE_CACHE_SIZE) >> 20;
866 return seq_printf(m, "unstable_check: %8d\n"
867 "unstable_pages: %12ld\n"
868 "unstable_mb: %8d\n",
869 cache->ccc_unstable_check, pages, mb);
872 static ssize_t ll_unstable_stats_seq_write(struct file *file,
873 const char __user *buffer,
874 size_t count, loff_t *unused)
876 struct seq_file *seq = file->private_data;
877 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
883 if (count >= sizeof(kernbuf))
886 if (copy_from_user(kernbuf, buffer, count))
890 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
892 rc = lprocfs_write_helper(buffer, count, &val);
896 /* borrow lru lock to set the value */
897 spin_lock(&sbi->ll_cache.ccc_lru_lock);
898 sbi->ll_cache.ccc_unstable_check = !!val;
899 spin_unlock(&sbi->ll_cache.ccc_lru_lock);
903 LPROC_SEQ_FOPS(ll_unstable_stats);
905 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
907 struct super_block *sb = m->private;
908 struct ll_sb_info *sbi = ll_s2sbi(sb);
909 struct root_squash_info *squash = &sbi->ll_squash;
911 return seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
914 static ssize_t ll_root_squash_seq_write(struct file *file,
915 const char __user *buffer,
916 size_t count, loff_t *off)
918 struct seq_file *m = file->private_data;
919 struct super_block *sb = m->private;
920 struct ll_sb_info *sbi = ll_s2sbi(sb);
921 struct root_squash_info *squash = &sbi->ll_squash;
923 return lprocfs_wr_root_squash(buffer, count, squash,
924 ll_get_fsname(sb, NULL, 0));
926 LPROC_SEQ_FOPS(ll_root_squash);
928 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
930 struct super_block *sb = m->private;
931 struct ll_sb_info *sbi = ll_s2sbi(sb);
932 struct root_squash_info *squash = &sbi->ll_squash;
935 down_read(&squash->rsi_sem);
936 if (!list_empty(&squash->rsi_nosquash_nids)) {
937 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
938 &squash->rsi_nosquash_nids);
940 rc = seq_printf(m, "\n");
942 rc = seq_printf(m, "NONE\n");
944 up_read(&squash->rsi_sem);
949 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
950 const char __user *buffer,
951 size_t count, loff_t *off)
953 struct seq_file *m = file->private_data;
954 struct super_block *sb = m->private;
955 struct ll_sb_info *sbi = ll_s2sbi(sb);
956 struct root_squash_info *squash = &sbi->ll_squash;
959 rc = lprocfs_wr_nosquash_nids(buffer, count, squash,
960 ll_get_fsname(sb, NULL, 0));
964 ll_compute_rootsquash_state(sbi);
968 LPROC_SEQ_FOPS(ll_nosquash_nids);
970 struct lprocfs_vars lprocfs_llite_obd_vars[] = {
972 .fops = &ll_sb_uuid_fops },
974 .fops = &ll_fstype_fops },
976 .fops = &ll_site_stats_fops },
977 { .name = "blocksize",
978 .fops = &ll_blksize_fops },
979 { .name = "kbytestotal",
980 .fops = &ll_kbytestotal_fops },
981 { .name = "kbytesfree",
982 .fops = &ll_kbytesfree_fops },
983 { .name = "kbytesavail",
984 .fops = &ll_kbytesavail_fops },
985 { .name = "filestotal",
986 .fops = &ll_filestotal_fops },
987 { .name = "filesfree",
988 .fops = &ll_filesfree_fops },
989 { .name = "client_type",
990 .fops = &ll_client_type_fops },
991 { .name = "max_read_ahead_mb",
992 .fops = &ll_max_readahead_mb_fops },
993 { .name = "max_read_ahead_per_file_mb",
994 .fops = &ll_max_readahead_per_file_mb_fops },
995 { .name = "max_read_ahead_whole_mb",
996 .fops = &ll_max_read_ahead_whole_mb_fops },
997 { .name = "max_cached_mb",
998 .fops = &ll_max_cached_mb_fops },
999 { .name = "checksum_pages",
1000 .fops = &ll_checksum_fops },
1001 { .name = "max_rw_chunk",
1002 .fops = &ll_max_rw_chunk_fops },
1003 { .name = "stats_track_pid",
1004 .fops = &ll_track_pid_fops },
1005 { .name = "stats_track_ppid",
1006 .fops = &ll_track_ppid_fops },
1007 { .name = "stats_track_gid",
1008 .fops = &ll_track_gid_fops },
1009 { .name = "statahead_max",
1010 .fops = &ll_statahead_max_fops },
1011 { .name = "statahead_agl",
1012 .fops = &ll_statahead_agl_fops },
1013 { .name = "statahead_stats",
1014 .fops = &ll_statahead_stats_fops },
1015 { .name = "lazystatfs",
1016 .fops = &ll_lazystatfs_fops },
1017 { .name = "max_easize",
1018 .fops = &ll_max_easize_fops },
1019 { .name = "default_easize",
1020 .fops = &ll_defult_easize_fops },
1021 { .name = "max_cookiesize",
1022 .fops = &ll_max_cookiesize_fops },
1023 { .name = "default_cookiesize",
1024 .fops = &ll_defult_cookiesize_fops },
1025 { .name = "sbi_flags",
1026 .fops = &ll_sbi_flags_fops },
1027 { .name = "xattr_cache",
1028 .fops = &ll_xattr_cache_fops },
1029 { .name = "unstable_stats",
1030 .fops = &ll_unstable_stats_fops },
1031 { .name = "root_squash",
1032 .fops = &ll_root_squash_fops },
1033 { .name = "nosquash_nids",
1034 .fops = &ll_nosquash_nids_fops },
1038 #define MAX_STRING_SIZE 128
1040 static const struct llite_file_opcode {
1044 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
1045 /* file operation */
1046 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
1047 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
1048 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1050 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1052 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1054 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1056 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1058 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1060 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
1061 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
1062 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
1063 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
1064 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
1065 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
1066 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
1067 /* inode operation */
1068 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
1069 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
1070 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
1071 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
1072 /* dir inode operation */
1073 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
1074 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
1075 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
1076 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
1077 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
1078 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
1079 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
1080 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
1081 /* special inode operation */
1082 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
1083 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
1084 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
1085 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
1086 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
1087 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
1088 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
1089 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
1092 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
1096 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
1097 lprocfs_counter_add(sbi->ll_stats, op, count);
1098 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
1099 sbi->ll_stats_track_id == current->pid)
1100 lprocfs_counter_add(sbi->ll_stats, op, count);
1101 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
1102 sbi->ll_stats_track_id == current->parent->pid)
1103 lprocfs_counter_add(sbi->ll_stats, op, count);
1104 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
1105 sbi->ll_stats_track_id ==
1106 from_kgid(&init_user_ns, current_gid()))
1107 lprocfs_counter_add(sbi->ll_stats, op, count);
1109 EXPORT_SYMBOL(ll_stats_ops_tally);
1111 static const char *ra_stat_string[] = {
1112 [RA_STAT_HIT] = "hits",
1113 [RA_STAT_MISS] = "misses",
1114 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
1115 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
1116 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
1117 [RA_STAT_FAILED_MATCH] = "failed lock match",
1118 [RA_STAT_DISCARDED] = "read but discarded",
1119 [RA_STAT_ZERO_LEN] = "zero length file",
1120 [RA_STAT_ZERO_WINDOW] = "zero size window",
1121 [RA_STAT_EOF] = "read-ahead to EOF",
1122 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
1123 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
1124 [RA_STAT_FAILED_REACH_END] = "failed to reach end"
1127 LPROC_SEQ_FOPS_RO_TYPE(llite, name);
1128 LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
1130 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
1131 struct super_block *sb, char *osc, char *mdc)
1133 struct lprocfs_vars lvars[2];
1134 struct lustre_sb_info *lsi = s2lsi(sb);
1135 struct ll_sb_info *sbi = ll_s2sbi(sb);
1136 struct obd_device *obd;
1137 struct proc_dir_entry *dir;
1138 char name[MAX_STRING_SIZE + 1], *ptr;
1139 int err, id, len, rc;
1142 memset(lvars, 0, sizeof(lvars));
1144 name[MAX_STRING_SIZE] = '\0';
1145 lvars[0].name = name;
1147 LASSERT(sbi != NULL);
1148 LASSERT(mdc != NULL);
1149 LASSERT(osc != NULL);
1152 len = strlen(lsi->lsi_lmd->lmd_profile);
1153 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
1154 if (ptr && (strcmp(ptr, "-client") == 0))
1158 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
1159 lsi->lsi_lmd->lmd_profile, sb);
1161 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
1162 if (IS_ERR(sbi->ll_proc_root)) {
1163 err = PTR_ERR(sbi->ll_proc_root);
1164 sbi->ll_proc_root = NULL;
1168 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
1169 &vvp_dump_pgcache_file_ops, sbi);
1171 CWARN("Error adding the dump_page_cache file\n");
1173 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
1174 &ll_rw_extents_stats_fops, sbi);
1176 CWARN("Error adding the extent_stats file\n");
1178 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
1179 0644, &ll_rw_extents_stats_pp_fops, sbi);
1181 CWARN("Error adding the extents_stats_per_process file\n");
1183 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
1184 &ll_rw_offset_stats_fops, sbi);
1186 CWARN("Error adding the offset_stats file\n");
1188 /* File operations stats */
1189 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1190 LPROCFS_STATS_FLAG_NONE);
1191 if (sbi->ll_stats == NULL)
1192 GOTO(out, err = -ENOMEM);
1193 /* do counter init */
1194 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1195 __u32 type = llite_opcode_table[id].type;
1197 if (type & LPROCFS_TYPE_REGS)
1199 else if (type & LPROCFS_TYPE_BYTES)
1201 else if (type & LPROCFS_TYPE_PAGES)
1203 lprocfs_counter_init(sbi->ll_stats,
1204 llite_opcode_table[id].opcode,
1205 (type & LPROCFS_CNTR_AVGMINMAX),
1206 llite_opcode_table[id].opname, ptr);
1208 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
1212 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1213 LPROCFS_STATS_FLAG_NONE);
1214 if (sbi->ll_ra_stats == NULL)
1215 GOTO(out, err = -ENOMEM);
1217 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1218 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1219 ra_stat_string[id], "pages");
1220 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
1226 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1231 obd = class_name2obd(mdc);
1233 LASSERT(obd != NULL);
1234 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1235 LASSERT(obd->obd_type->typ_name != NULL);
1237 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1239 GOTO(out, err = -ENOMEM);
1241 snprintf(name, MAX_STRING_SIZE, "common_name");
1242 lvars[0].fops = &llite_name_fops;
1243 err = lprocfs_add_vars(dir, lvars, obd);
1247 snprintf(name, MAX_STRING_SIZE, "uuid");
1248 lvars[0].fops = &llite_uuid_fops;
1249 err = lprocfs_add_vars(dir, lvars, obd);
1254 obd = class_name2obd(osc);
1256 LASSERT(obd != NULL);
1257 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1258 LASSERT(obd->obd_type->typ_name != NULL);
1260 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1262 GOTO(out, err = -ENOMEM);
1264 snprintf(name, MAX_STRING_SIZE, "common_name");
1265 lvars[0].fops = &llite_name_fops;
1266 err = lprocfs_add_vars(dir, lvars, obd);
1270 snprintf(name, MAX_STRING_SIZE, "uuid");
1271 lvars[0].fops = &llite_uuid_fops;
1272 err = lprocfs_add_vars(dir, lvars, obd);
1275 lprocfs_remove(&sbi->ll_proc_root);
1276 lprocfs_free_stats(&sbi->ll_ra_stats);
1277 lprocfs_free_stats(&sbi->ll_stats);
1282 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1284 if (sbi->ll_proc_root) {
1285 lprocfs_remove(&sbi->ll_proc_root);
1286 lprocfs_free_stats(&sbi->ll_ra_stats);
1287 lprocfs_free_stats(&sbi->ll_stats);
1290 #undef MAX_STRING_SIZE
1292 #define pct(a,b) (b ? a * 100 / b : 0)
1294 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1295 struct seq_file *seq, int which)
1297 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1298 unsigned long start, end, r, w;
1299 char *unitp = "KMGTPEZY";
1301 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1307 for(i = 0; i < LL_HIST_MAX; i++) {
1308 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1309 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1312 for(i = 0; i < LL_HIST_MAX; i++) {
1313 r = pp_info->pp_r_hist.oh_buckets[i];
1314 w = pp_info->pp_w_hist.oh_buckets[i];
1317 end = 1 << (i + LL_HIST_START - units);
1318 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1319 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1320 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1321 r, pct(r, read_tot), pct(read_cum, read_tot),
1322 w, pct(w, write_tot), pct(write_cum, write_tot));
1324 if (start == 1<<10) {
1329 if (read_cum == read_tot && write_cum == write_tot)
1334 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1337 struct ll_sb_info *sbi = seq->private;
1338 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1341 do_gettimeofday(&now);
1343 if (!sbi->ll_rw_stats_on) {
1344 seq_printf(seq, "disabled\n"
1345 "write anything in this file to activate, "
1346 "then 0 or \"[D/d]isabled\" to deactivate\n");
1349 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1350 now.tv_sec, now.tv_usec);
1351 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1352 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1353 "extents", "calls", "%", "cum%",
1354 "calls", "%", "cum%");
1355 spin_lock(&sbi->ll_pp_extent_lock);
1356 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1357 if (io_extents->pp_extents[k].pid != 0) {
1358 seq_printf(seq, "\nPID: %d\n",
1359 io_extents->pp_extents[k].pid);
1360 ll_display_extents_info(io_extents, seq, k);
1363 spin_unlock(&sbi->ll_pp_extent_lock);
1367 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1368 const char __user *buf,
1372 struct seq_file *seq = file->private_data;
1373 struct ll_sb_info *sbi = seq->private;
1374 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1376 int value = 1, rc = 0;
1381 rc = lprocfs_write_helper(buf, len, &value);
1382 if (rc < 0 && len < 16) {
1385 if (copy_from_user(kernbuf, buf, len))
1389 if (kernbuf[len - 1] == '\n')
1390 kernbuf[len - 1] = 0;
1392 if (strcmp(kernbuf, "disabled") == 0 ||
1393 strcmp(kernbuf, "Disabled") == 0)
1398 sbi->ll_rw_stats_on = 0;
1400 sbi->ll_rw_stats_on = 1;
1402 spin_lock(&sbi->ll_pp_extent_lock);
1403 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1404 io_extents->pp_extents[i].pid = 0;
1405 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1406 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1408 spin_unlock(&sbi->ll_pp_extent_lock);
1412 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1414 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1417 struct ll_sb_info *sbi = seq->private;
1418 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1420 do_gettimeofday(&now);
1422 if (!sbi->ll_rw_stats_on) {
1423 seq_printf(seq, "disabled\n"
1424 "write anything in this file to activate, "
1425 "then 0 or \"[D/d]isabled\" to deactivate\n");
1428 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1429 now.tv_sec, now.tv_usec);
1431 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1432 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1433 "extents", "calls", "%", "cum%",
1434 "calls", "%", "cum%");
1435 spin_lock(&sbi->ll_lock);
1436 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1437 spin_unlock(&sbi->ll_lock);
1442 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1443 const char __user *buf,
1444 size_t len, loff_t *off)
1446 struct seq_file *seq = file->private_data;
1447 struct ll_sb_info *sbi = seq->private;
1448 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1450 int value = 1, rc = 0;
1455 rc = lprocfs_write_helper(buf, len, &value);
1456 if (rc < 0 && len < 16) {
1459 if (copy_from_user(kernbuf, buf, len))
1463 if (kernbuf[len - 1] == '\n')
1464 kernbuf[len - 1] = 0;
1466 if (strcmp(kernbuf, "disabled") == 0 ||
1467 strcmp(kernbuf, "Disabled") == 0)
1472 sbi->ll_rw_stats_on = 0;
1474 sbi->ll_rw_stats_on = 1;
1476 spin_lock(&sbi->ll_pp_extent_lock);
1477 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1478 io_extents->pp_extents[i].pid = 0;
1479 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1480 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1482 spin_unlock(&sbi->ll_pp_extent_lock);
1486 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1488 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1489 struct ll_file_data *file, loff_t pos,
1490 size_t count, int rw)
1493 struct ll_rw_process_info *process;
1494 struct ll_rw_process_info *offset;
1495 int *off_count = &sbi->ll_rw_offset_entry_count;
1496 int *process_count = &sbi->ll_offset_process_count;
1497 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1499 if(!sbi->ll_rw_stats_on)
1501 process = sbi->ll_rw_process_info;
1502 offset = sbi->ll_rw_offset_info;
1504 spin_lock(&sbi->ll_pp_extent_lock);
1505 /* Extent statistics */
1506 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1507 if(io_extents->pp_extents[i].pid == pid) {
1515 sbi->ll_extent_process_count =
1516 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1517 cur = sbi->ll_extent_process_count;
1518 io_extents->pp_extents[cur].pid = pid;
1519 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1520 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1523 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1524 (i < (LL_HIST_MAX - 1)); i++);
1526 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1527 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1529 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1530 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1532 spin_unlock(&sbi->ll_pp_extent_lock);
1534 spin_lock(&sbi->ll_process_lock);
1535 /* Offset statistics */
1536 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1537 if (process[i].rw_pid == pid) {
1538 if (process[i].rw_last_file != file) {
1539 process[i].rw_range_start = pos;
1540 process[i].rw_last_file_pos = pos + count;
1541 process[i].rw_smallest_extent = count;
1542 process[i].rw_largest_extent = count;
1543 process[i].rw_offset = 0;
1544 process[i].rw_last_file = file;
1545 spin_unlock(&sbi->ll_process_lock);
1548 if (process[i].rw_last_file_pos != pos) {
1550 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1551 offset[*off_count].rw_op = process[i].rw_op;
1552 offset[*off_count].rw_pid = pid;
1553 offset[*off_count].rw_range_start =
1554 process[i].rw_range_start;
1555 offset[*off_count].rw_range_end =
1556 process[i].rw_last_file_pos;
1557 offset[*off_count].rw_smallest_extent =
1558 process[i].rw_smallest_extent;
1559 offset[*off_count].rw_largest_extent =
1560 process[i].rw_largest_extent;
1561 offset[*off_count].rw_offset =
1562 process[i].rw_offset;
1563 process[i].rw_op = rw;
1564 process[i].rw_range_start = pos;
1565 process[i].rw_smallest_extent = count;
1566 process[i].rw_largest_extent = count;
1567 process[i].rw_offset = pos -
1568 process[i].rw_last_file_pos;
1570 if(process[i].rw_smallest_extent > count)
1571 process[i].rw_smallest_extent = count;
1572 if(process[i].rw_largest_extent < count)
1573 process[i].rw_largest_extent = count;
1574 process[i].rw_last_file_pos = pos + count;
1575 spin_unlock(&sbi->ll_process_lock);
1579 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1580 process[*process_count].rw_pid = pid;
1581 process[*process_count].rw_op = rw;
1582 process[*process_count].rw_range_start = pos;
1583 process[*process_count].rw_last_file_pos = pos + count;
1584 process[*process_count].rw_smallest_extent = count;
1585 process[*process_count].rw_largest_extent = count;
1586 process[*process_count].rw_offset = 0;
1587 process[*process_count].rw_last_file = file;
1588 spin_unlock(&sbi->ll_process_lock);
1591 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1594 struct ll_sb_info *sbi = seq->private;
1595 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1596 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1599 do_gettimeofday(&now);
1601 if (!sbi->ll_rw_stats_on) {
1602 seq_printf(seq, "disabled\n"
1603 "write anything in this file to activate, "
1604 "then 0 or \"[D/d]isabled\" to deactivate\n");
1607 spin_lock(&sbi->ll_process_lock);
1609 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1610 now.tv_sec, now.tv_usec);
1611 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1612 "R/W", "PID", "RANGE START", "RANGE END",
1613 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1615 /* We stored the discontiguous offsets here; print them first */
1616 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1617 if (offset[i].rw_pid != 0)
1619 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1620 offset[i].rw_op == READ ? 'R' : 'W',
1622 offset[i].rw_range_start,
1623 offset[i].rw_range_end,
1624 (unsigned long)offset[i].rw_smallest_extent,
1625 (unsigned long)offset[i].rw_largest_extent,
1626 offset[i].rw_offset);
1629 /* Then print the current offsets for each process */
1630 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1631 if (process[i].rw_pid != 0)
1633 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1634 process[i].rw_op == READ ? 'R' : 'W',
1636 process[i].rw_range_start,
1637 process[i].rw_last_file_pos,
1638 (unsigned long)process[i].rw_smallest_extent,
1639 (unsigned long)process[i].rw_largest_extent,
1640 process[i].rw_offset);
1642 spin_unlock(&sbi->ll_process_lock);
1647 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
1648 const char __user *buf,
1649 size_t len, loff_t *off)
1651 struct seq_file *seq = file->private_data;
1652 struct ll_sb_info *sbi = seq->private;
1653 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1654 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1655 int value = 1, rc = 0;
1660 rc = lprocfs_write_helper(buf, len, &value);
1662 if (rc < 0 && len < 16) {
1665 if (copy_from_user(kernbuf, buf, len))
1669 if (kernbuf[len - 1] == '\n')
1670 kernbuf[len - 1] = 0;
1672 if (strcmp(kernbuf, "disabled") == 0 ||
1673 strcmp(kernbuf, "Disabled") == 0)
1678 sbi->ll_rw_stats_on = 0;
1680 sbi->ll_rw_stats_on = 1;
1682 spin_lock(&sbi->ll_process_lock);
1683 sbi->ll_offset_process_count = 0;
1684 sbi->ll_rw_offset_entry_count = 0;
1685 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1686 LL_PROCESS_HIST_MAX);
1687 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1688 LL_OFFSET_HIST_MAX);
1689 spin_unlock(&sbi->ll_process_lock);
1694 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1695 #endif /* CONFIG_PROC_FS */