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, 2013, 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 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 = 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, const char *buffer,
212 size_t count, loff_t *off)
214 struct seq_file *m = file->private_data;
215 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
218 rc = lprocfs_write_helper(buffer, count, &val);
222 if (val != 0 && val != 1)
225 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
228 sbi->ll_xattr_cache_enabled = val;
232 LPROC_SEQ_FOPS(ll_xattr_cache);
234 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
236 struct super_block *sb = m->private;
239 * See description of statistical counters in struct cl_site, and
242 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
244 LPROC_SEQ_FOPS_RO(ll_site_stats);
246 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
248 struct super_block *sb = m->private;
249 struct ll_sb_info *sbi = ll_s2sbi(sb);
253 spin_lock(&sbi->ll_lock);
254 pages_number = sbi->ll_ra_info.ra_max_pages;
255 spin_unlock(&sbi->ll_lock);
257 mult = 1 << (20 - PAGE_CACHE_SHIFT);
258 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
262 ll_max_readahead_mb_seq_write(struct file *file, const char *buffer,
263 size_t count, loff_t *off)
265 struct seq_file *m = file->private_data;
266 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
272 mult = 1 << (20 - PAGE_CACHE_SHIFT);
273 rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
279 pages_number = (long)val;
281 if (pages_number < 0 || pages_number > totalram_pages / 2) {
283 CERROR("can't set file readahead more than %lu MB\n",
284 totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1));
288 spin_lock(&sbi->ll_lock);
289 sbi->ll_ra_info.ra_max_pages = pages_number;
290 spin_unlock(&sbi->ll_lock);
293 LPROC_SEQ_FOPS(ll_max_readahead_mb);
295 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
297 struct super_block *sb = m->private;
298 struct ll_sb_info *sbi = ll_s2sbi(sb);
302 spin_lock(&sbi->ll_lock);
303 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
304 spin_unlock(&sbi->ll_lock);
306 mult = 1 << (20 - PAGE_CACHE_SHIFT);
307 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
311 ll_max_readahead_per_file_mb_seq_write(struct file *file, const char *buffer,
312 size_t count, loff_t *off)
314 struct seq_file *m = file->private_data;
315 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
316 int mult, rc, pages_number;
318 mult = 1 << (20 - PAGE_CACHE_SHIFT);
319 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
323 if (pages_number < 0 ||
324 pages_number > sbi->ll_ra_info.ra_max_pages) {
325 CERROR("can't set file readahead more than"
326 "max_read_ahead_mb %lu MB\n",
327 sbi->ll_ra_info.ra_max_pages);
331 spin_lock(&sbi->ll_lock);
332 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
333 spin_unlock(&sbi->ll_lock);
336 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
338 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *v)
340 struct super_block *sb = m->private;
341 struct ll_sb_info *sbi = ll_s2sbi(sb);
345 spin_lock(&sbi->ll_lock);
346 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
347 spin_unlock(&sbi->ll_lock);
349 mult = 1 << (20 - PAGE_CACHE_SHIFT);
350 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
354 ll_max_read_ahead_whole_mb_seq_write(struct file *file, const char *buffer,
355 size_t count, loff_t *off)
357 struct seq_file *m = file->private_data;
358 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
359 int mult, rc, pages_number;
361 mult = 1 << (20 - PAGE_CACHE_SHIFT);
362 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
366 /* Cap this at the current max readahead window size, the readahead
367 * algorithm does this anyway so it's pointless to set it larger. */
368 if (pages_number < 0 ||
369 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
370 CERROR("can't set max_read_ahead_whole_mb more than "
371 "max_read_ahead_per_file_mb: %lu\n",
372 sbi->ll_ra_info.ra_max_pages_per_file >>
373 (20 - PAGE_CACHE_SHIFT));
377 spin_lock(&sbi->ll_lock);
378 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
379 spin_unlock(&sbi->ll_lock);
382 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
384 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
386 struct super_block *sb = m->private;
387 struct ll_sb_info *sbi = ll_s2sbi(sb);
388 struct cl_client_cache *cache = &sbi->ll_cache;
389 int shift = 20 - PAGE_CACHE_SHIFT;
393 max_cached_mb = cache->ccc_lru_max >> shift;
394 unused_mb = atomic_long_read(&cache->ccc_lru_left) >> shift;
397 "max_cached_mb: %ld\n"
400 "reclaim_count: %u\n",
401 atomic_read(&cache->ccc_users),
403 max_cached_mb - unused_mb,
405 cache->ccc_lru_shrinkers);
409 ll_max_cached_mb_seq_write(struct file *file, const char __user *buffer,
410 size_t count, loff_t *off)
412 struct seq_file *m = file->private_data;
413 struct super_block *sb = m->private;
414 struct ll_sb_info *sbi = ll_s2sbi(sb);
415 struct cl_client_cache *cache = &sbi->ll_cache;
427 if (count >= sizeof(kernbuf))
430 if (copy_from_user(kernbuf, buffer, count))
434 mult = 1 << (20 - PAGE_CACHE_SHIFT);
435 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
437 rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
443 pages_number = (long)val;
445 if (pages_number < 0 || pages_number > totalram_pages) {
446 CERROR("%s: can't set max cache more than %lu MB\n",
447 ll_get_fsname(sb, NULL, 0),
448 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
452 spin_lock(&sbi->ll_lock);
453 diff = pages_number - cache->ccc_lru_max;
454 spin_unlock(&sbi->ll_lock);
456 /* easy - add more LRU slots. */
458 atomic_long_add(diff, &cache->ccc_lru_left);
462 env = cl_env_get(&refcheck);
470 /* reduce LRU budget from free slots. */
474 ov = atomic_long_read(&cache->ccc_lru_left);
478 nv = ov > diff ? ov - diff : 0;
479 rc = atomic_long_cmpxchg(&cache->ccc_lru_left, ov, nv);
480 if (likely(ov == rc)) {
490 if (sbi->ll_dt_exp == NULL) { /* being initialized */
495 /* difficult - have to ask OSCs to drop LRU slots. */
497 rc = obd_set_info_async(env, sbi->ll_dt_exp,
498 sizeof(KEY_CACHE_LRU_SHRINK),
499 KEY_CACHE_LRU_SHRINK,
500 sizeof(tmp), &tmp, NULL);
504 cl_env_put(env, &refcheck);
508 spin_lock(&sbi->ll_lock);
509 cache->ccc_lru_max = pages_number;
510 spin_unlock(&sbi->ll_lock);
513 atomic_long_add(nrpages, &cache->ccc_lru_left);
517 LPROC_SEQ_FOPS(ll_max_cached_mb);
519 static int ll_checksum_seq_show(struct seq_file *m, void *v)
521 struct super_block *sb = m->private;
522 struct ll_sb_info *sbi = ll_s2sbi(sb);
524 return seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
527 static ssize_t ll_checksum_seq_write(struct file *file, const char *buffer,
528 size_t count, loff_t *off)
530 struct seq_file *m = file->private_data;
531 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
538 rc = lprocfs_write_helper(buffer, count, &val);
542 sbi->ll_flags |= LL_SBI_CHECKSUM;
544 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
546 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
547 KEY_CHECKSUM, sizeof(val), &val, NULL);
549 CWARN("Failed to set OSC checksum flags: %d\n", rc);
553 LPROC_SEQ_FOPS(ll_checksum);
555 static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
557 struct super_block *sb = m->private;
559 return seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
562 static ssize_t ll_max_rw_chunk_seq_write(struct file *file, const char *buffer,
563 size_t count, loff_t *off)
565 struct seq_file *m = file->private_data;
566 struct super_block *sb = m->private;
569 rc = lprocfs_write_helper(buffer, count, &val);
572 ll_s2sbi(sb)->ll_max_rw_chunk = val;
575 LPROC_SEQ_FOPS(ll_max_rw_chunk);
577 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
579 struct super_block *sb = m->private;
581 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
582 return seq_printf(m, "%d\n",
583 ll_s2sbi(sb)->ll_stats_track_id);
584 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
585 return seq_printf(m, "0 (all)\n");
587 return seq_printf(m, "untracked\n");
591 static int ll_wr_track_id(const char *buffer, unsigned long count, void *data,
592 enum stats_track_type type)
594 struct super_block *sb = data;
597 rc = lprocfs_write_helper(buffer, count, &pid);
600 ll_s2sbi(sb)->ll_stats_track_id = pid;
602 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
604 ll_s2sbi(sb)->ll_stats_track_type = type;
605 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
609 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
611 return ll_rd_track_id(m, STATS_TRACK_PID);
614 static ssize_t ll_track_pid_seq_write(struct file *file, const char *buffer,
615 size_t count, loff_t *off)
617 struct seq_file *seq = file->private_data;
618 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
620 LPROC_SEQ_FOPS(ll_track_pid);
622 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
624 return ll_rd_track_id(m, STATS_TRACK_PPID);
627 static ssize_t ll_track_ppid_seq_write(struct file *file, const char *buffer,
628 size_t count, loff_t *off)
630 struct seq_file *seq = file->private_data;
631 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
633 LPROC_SEQ_FOPS(ll_track_ppid);
635 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
637 return ll_rd_track_id(m, STATS_TRACK_GID);
640 static ssize_t ll_track_gid_seq_write(struct file *file, const char *buffer,
641 size_t count, loff_t *off)
643 struct seq_file *seq = file->private_data;
644 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
646 LPROC_SEQ_FOPS(ll_track_gid);
648 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
650 struct super_block *sb = m->private;
651 struct ll_sb_info *sbi = ll_s2sbi(sb);
653 return seq_printf(m, "%u\n", sbi->ll_sa_max);
656 static ssize_t ll_statahead_max_seq_write(struct file *file, const char *buffer,
657 size_t count, loff_t *off)
659 struct seq_file *m = file->private_data;
660 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
663 rc = lprocfs_write_helper(buffer, count, &val);
667 if (val >= 0 && val <= LL_SA_RPC_MAX)
668 sbi->ll_sa_max = val;
670 CERROR("Bad statahead_max value %d. Valid values are in the "
671 "range [0, %d]\n", val, LL_SA_RPC_MAX);
675 LPROC_SEQ_FOPS(ll_statahead_max);
677 static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
679 struct super_block *sb = m->private;
680 struct ll_sb_info *sbi = ll_s2sbi(sb);
682 return seq_printf(m, "%u\n",
683 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
686 static ssize_t ll_statahead_agl_seq_write(struct file *file, const char *buffer,
687 size_t count, loff_t *off)
689 struct seq_file *m = file->private_data;
690 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
693 rc = lprocfs_write_helper(buffer, count, &val);
698 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
700 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
704 LPROC_SEQ_FOPS(ll_statahead_agl);
706 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
708 struct super_block *sb = m->private;
709 struct ll_sb_info *sbi = ll_s2sbi(sb);
712 "statahead total: %u\n"
713 "statahead wrong: %u\n"
715 atomic_read(&sbi->ll_sa_total),
716 atomic_read(&sbi->ll_sa_wrong),
717 atomic_read(&sbi->ll_agl_total));
719 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
721 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
723 struct super_block *sb = m->private;
724 struct ll_sb_info *sbi = ll_s2sbi(sb);
726 return seq_printf(m, "%u\n",
727 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
730 static ssize_t ll_lazystatfs_seq_write(struct file *file, const char *buffer,
731 size_t count, loff_t *off)
733 struct seq_file *m = file->private_data;
734 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
737 rc = lprocfs_write_helper(buffer, count, &val);
742 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
744 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
748 LPROC_SEQ_FOPS(ll_lazystatfs);
750 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
752 struct super_block *sb = m->private;
753 struct ll_sb_info *sbi = ll_s2sbi(sb);
757 rc = ll_get_max_mdsize(sbi, &ealen);
761 return seq_printf(m, "%u\n", ealen);
763 LPROC_SEQ_FOPS_RO(ll_max_easize);
765 static int ll_defult_easize_seq_show(struct seq_file *m, void *v)
767 struct super_block *sb = m->private;
768 struct ll_sb_info *sbi = ll_s2sbi(sb);
772 rc = ll_get_default_mdsize(sbi, &ealen);
776 return seq_printf(m, "%u\n", ealen);
778 LPROC_SEQ_FOPS_RO(ll_defult_easize);
780 static int ll_max_cookiesize_seq_show(struct seq_file *m, void *v)
782 struct super_block *sb = m->private;
783 struct ll_sb_info *sbi = ll_s2sbi(sb);
784 unsigned int cookielen;
787 rc = ll_get_max_cookiesize(sbi, &cookielen);
791 return seq_printf(m, "%u\n", cookielen);
793 LPROC_SEQ_FOPS_RO(ll_max_cookiesize);
795 static int ll_defult_cookiesize_seq_show(struct seq_file *m, void *v)
797 struct super_block *sb = m->private;
798 struct ll_sb_info *sbi = ll_s2sbi(sb);
799 unsigned int cookielen;
802 rc = ll_get_default_cookiesize(sbi, &cookielen);
806 return seq_printf(m, "%u\n", cookielen);
808 LPROC_SEQ_FOPS_RO(ll_defult_cookiesize);
810 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
812 const char *str[] = LL_SBI_FLAGS;
813 struct super_block *sb = m->private;
814 int flags = ll_s2sbi(sb)->ll_flags;
818 if (ARRAY_SIZE(str) <= i) {
819 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
820 "flags please.\n", ll_get_fsname(sb, NULL, 0));
825 seq_printf(m, "%s ", str[i]);
829 seq_printf(m, "\b\n");
832 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
834 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
836 struct super_block *sb = m->private;
837 struct ll_sb_info *sbi = ll_s2sbi(sb);
838 struct cl_client_cache *cache = &sbi->ll_cache;
842 pages = atomic_long_read(&cache->ccc_unstable_nr);
843 mb = (pages * PAGE_CACHE_SIZE) >> 20;
845 return seq_printf(m, "unstable_check: %8d\n"
846 "unstable_pages: %12ld\n"
847 "unstable_mb: %8d\n",
848 cache->ccc_unstable_check, pages, mb);
851 static ssize_t ll_unstable_stats_seq_write(struct file *file,
852 const char __user *buffer,
853 size_t count, loff_t *unused)
855 struct seq_file *seq = file->private_data;
856 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
862 if (count >= sizeof(kernbuf))
865 if (copy_from_user(kernbuf, buffer, count))
869 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
871 rc = lprocfs_write_helper(buffer, count, &val);
875 /* borrow lru lock to set the value */
876 spin_lock(&sbi->ll_cache.ccc_lru_lock);
877 sbi->ll_cache.ccc_unstable_check = !!val;
878 spin_unlock(&sbi->ll_cache.ccc_lru_lock);
882 LPROC_SEQ_FOPS(ll_unstable_stats);
884 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
886 struct super_block *sb = m->private;
887 struct ll_sb_info *sbi = ll_s2sbi(sb);
888 struct root_squash_info *squash = &sbi->ll_squash;
890 return seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
893 static ssize_t ll_root_squash_seq_write(struct file *file,
894 const char __user *buffer,
895 size_t count, loff_t *off)
897 struct seq_file *m = file->private_data;
898 struct super_block *sb = m->private;
899 struct ll_sb_info *sbi = ll_s2sbi(sb);
900 struct root_squash_info *squash = &sbi->ll_squash;
902 return lprocfs_wr_root_squash(buffer, count, squash,
903 ll_get_fsname(sb, NULL, 0));
905 LPROC_SEQ_FOPS(ll_root_squash);
907 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
909 struct super_block *sb = m->private;
910 struct ll_sb_info *sbi = ll_s2sbi(sb);
911 struct root_squash_info *squash = &sbi->ll_squash;
914 down_read(&squash->rsi_sem);
915 if (!list_empty(&squash->rsi_nosquash_nids)) {
916 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
917 &squash->rsi_nosquash_nids);
919 rc = seq_printf(m, "\n");
921 rc = seq_printf(m, "NONE\n");
923 up_read(&squash->rsi_sem);
928 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
929 const char __user *buffer,
930 size_t count, loff_t *off)
932 struct seq_file *m = file->private_data;
933 struct super_block *sb = m->private;
934 struct ll_sb_info *sbi = ll_s2sbi(sb);
935 struct root_squash_info *squash = &sbi->ll_squash;
938 rc = lprocfs_wr_nosquash_nids(buffer, count, squash,
939 ll_get_fsname(sb, NULL, 0));
943 ll_compute_rootsquash_state(sbi);
947 LPROC_SEQ_FOPS(ll_nosquash_nids);
949 struct lprocfs_seq_vars lprocfs_llite_obd_vars[] = {
951 .fops = &ll_sb_uuid_fops },
953 .fops = &ll_fstype_fops },
955 .fops = &ll_site_stats_fops },
956 { .name = "blocksize",
957 .fops = &ll_blksize_fops },
958 { .name = "kbytestotal",
959 .fops = &ll_kbytestotal_fops },
960 { .name = "kbytesfree",
961 .fops = &ll_kbytesfree_fops },
962 { .name = "kbytesavail",
963 .fops = &ll_kbytesavail_fops },
964 { .name = "filestotal",
965 .fops = &ll_filestotal_fops },
966 { .name = "filesfree",
967 .fops = &ll_filesfree_fops },
968 { .name = "client_type",
969 .fops = &ll_client_type_fops },
970 { .name = "max_read_ahead_mb",
971 .fops = &ll_max_readahead_mb_fops },
972 { .name = "max_read_ahead_per_file_mb",
973 .fops = &ll_max_readahead_per_file_mb_fops },
974 { .name = "max_read_ahead_whole_mb",
975 .fops = &ll_max_read_ahead_whole_mb_fops },
976 { .name = "max_cached_mb",
977 .fops = &ll_max_cached_mb_fops },
978 { .name = "checksum_pages",
979 .fops = &ll_checksum_fops },
980 { .name = "max_rw_chunk",
981 .fops = &ll_max_rw_chunk_fops },
982 { .name = "stats_track_pid",
983 .fops = &ll_track_pid_fops },
984 { .name = "stats_track_ppid",
985 .fops = &ll_track_ppid_fops },
986 { .name = "stats_track_gid",
987 .fops = &ll_track_gid_fops },
988 { .name = "statahead_max",
989 .fops = &ll_statahead_max_fops },
990 { .name = "statahead_agl",
991 .fops = &ll_statahead_agl_fops },
992 { .name = "statahead_stats",
993 .fops = &ll_statahead_stats_fops },
994 { .name = "lazystatfs",
995 .fops = &ll_lazystatfs_fops },
996 { .name = "max_easize",
997 .fops = &ll_max_easize_fops },
998 { .name = "default_easize",
999 .fops = &ll_defult_easize_fops },
1000 { .name = "max_cookiesize",
1001 .fops = &ll_max_cookiesize_fops },
1002 { .name = "default_cookiesize",
1003 .fops = &ll_defult_cookiesize_fops },
1004 { .name = "sbi_flags",
1005 .fops = &ll_sbi_flags_fops },
1006 { .name = "xattr_cache",
1007 .fops = &ll_xattr_cache_fops },
1008 { .name = "unstable_stats",
1009 .fops = &ll_unstable_stats_fops },
1010 { .name = "root_squash",
1011 .fops = &ll_root_squash_fops },
1012 { .name = "nosquash_nids",
1013 .fops = &ll_nosquash_nids_fops },
1017 #define MAX_STRING_SIZE 128
1019 static const struct llite_file_opcode {
1023 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
1024 /* file operation */
1025 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
1026 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
1027 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1029 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1031 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1033 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1035 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1037 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1039 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
1040 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
1041 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
1042 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
1043 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
1044 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
1045 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
1046 /* inode operation */
1047 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
1048 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
1049 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
1050 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
1051 /* dir inode operation */
1052 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
1053 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
1054 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
1055 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
1056 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
1057 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
1058 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
1059 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
1060 /* special inode operation */
1061 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
1062 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
1063 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
1064 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
1065 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
1066 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
1067 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
1068 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
1071 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
1075 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
1076 lprocfs_counter_add(sbi->ll_stats, op, count);
1077 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
1078 sbi->ll_stats_track_id == current->pid)
1079 lprocfs_counter_add(sbi->ll_stats, op, count);
1080 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
1081 sbi->ll_stats_track_id == current->parent->pid)
1082 lprocfs_counter_add(sbi->ll_stats, op, count);
1083 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
1084 sbi->ll_stats_track_id ==
1085 from_kgid(&init_user_ns, current_gid()))
1086 lprocfs_counter_add(sbi->ll_stats, op, count);
1088 EXPORT_SYMBOL(ll_stats_ops_tally);
1090 static const char *ra_stat_string[] = {
1091 [RA_STAT_HIT] = "hits",
1092 [RA_STAT_MISS] = "misses",
1093 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
1094 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
1095 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
1096 [RA_STAT_FAILED_MATCH] = "failed lock match",
1097 [RA_STAT_DISCARDED] = "read but discarded",
1098 [RA_STAT_ZERO_LEN] = "zero length file",
1099 [RA_STAT_ZERO_WINDOW] = "zero size window",
1100 [RA_STAT_EOF] = "read-ahead to EOF",
1101 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
1102 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
1103 [RA_STAT_FAILED_REACH_END] = "failed to reach end"
1106 LPROC_SEQ_FOPS_RO_TYPE(llite, name);
1107 LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
1109 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
1110 struct super_block *sb, char *osc, char *mdc)
1112 struct lprocfs_seq_vars lvars[2];
1113 struct lustre_sb_info *lsi = s2lsi(sb);
1114 struct ll_sb_info *sbi = ll_s2sbi(sb);
1115 struct obd_device *obd;
1116 struct proc_dir_entry *dir;
1117 char name[MAX_STRING_SIZE + 1], *ptr;
1118 int err, id, len, rc;
1121 memset(lvars, 0, sizeof(lvars));
1123 name[MAX_STRING_SIZE] = '\0';
1124 lvars[0].name = name;
1126 LASSERT(sbi != NULL);
1127 LASSERT(mdc != NULL);
1128 LASSERT(osc != NULL);
1131 len = strlen(lsi->lsi_lmd->lmd_profile);
1132 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
1133 if (ptr && (strcmp(ptr, "-client") == 0))
1137 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
1138 lsi->lsi_lmd->lmd_profile, sb);
1140 sbi->ll_proc_root = lprocfs_seq_register(name, parent, NULL, NULL);
1141 if (IS_ERR(sbi->ll_proc_root)) {
1142 err = PTR_ERR(sbi->ll_proc_root);
1143 sbi->ll_proc_root = NULL;
1147 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
1148 &vvp_dump_pgcache_file_ops, sbi);
1150 CWARN("Error adding the dump_page_cache file\n");
1152 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
1153 &ll_rw_extents_stats_fops, sbi);
1155 CWARN("Error adding the extent_stats file\n");
1157 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
1158 0644, &ll_rw_extents_stats_pp_fops, sbi);
1160 CWARN("Error adding the extents_stats_per_process file\n");
1162 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
1163 &ll_rw_offset_stats_fops, sbi);
1165 CWARN("Error adding the offset_stats file\n");
1167 /* File operations stats */
1168 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1169 LPROCFS_STATS_FLAG_NONE);
1170 if (sbi->ll_stats == NULL)
1171 GOTO(out, err = -ENOMEM);
1172 /* do counter init */
1173 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1174 __u32 type = llite_opcode_table[id].type;
1176 if (type & LPROCFS_TYPE_REGS)
1178 else if (type & LPROCFS_TYPE_BYTES)
1180 else if (type & LPROCFS_TYPE_PAGES)
1182 lprocfs_counter_init(sbi->ll_stats,
1183 llite_opcode_table[id].opcode,
1184 (type & LPROCFS_CNTR_AVGMINMAX),
1185 llite_opcode_table[id].opname, ptr);
1187 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
1191 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1192 LPROCFS_STATS_FLAG_NONE);
1193 if (sbi->ll_ra_stats == NULL)
1194 GOTO(out, err = -ENOMEM);
1196 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1197 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1198 ra_stat_string[id], "pages");
1199 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
1205 err = lprocfs_seq_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1210 obd = class_name2obd(mdc);
1212 LASSERT(obd != NULL);
1213 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1214 LASSERT(obd->obd_type->typ_name != NULL);
1216 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1218 GOTO(out, err = -ENOMEM);
1220 snprintf(name, MAX_STRING_SIZE, "common_name");
1221 lvars[0].fops = &llite_name_fops;
1222 err = lprocfs_seq_add_vars(dir, lvars, obd);
1226 snprintf(name, MAX_STRING_SIZE, "uuid");
1227 lvars[0].fops = &llite_uuid_fops;
1228 err = lprocfs_seq_add_vars(dir, lvars, obd);
1233 obd = class_name2obd(osc);
1235 LASSERT(obd != NULL);
1236 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1237 LASSERT(obd->obd_type->typ_name != NULL);
1239 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1241 GOTO(out, err = -ENOMEM);
1243 snprintf(name, MAX_STRING_SIZE, "common_name");
1244 lvars[0].fops = &llite_name_fops;
1245 err = lprocfs_seq_add_vars(dir, lvars, obd);
1249 snprintf(name, MAX_STRING_SIZE, "uuid");
1250 lvars[0].fops = &llite_uuid_fops;
1251 err = lprocfs_seq_add_vars(dir, lvars, obd);
1254 lprocfs_remove(&sbi->ll_proc_root);
1255 lprocfs_free_stats(&sbi->ll_ra_stats);
1256 lprocfs_free_stats(&sbi->ll_stats);
1261 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1263 if (sbi->ll_proc_root) {
1264 lprocfs_remove(&sbi->ll_proc_root);
1265 lprocfs_free_stats(&sbi->ll_ra_stats);
1266 lprocfs_free_stats(&sbi->ll_stats);
1269 #undef MAX_STRING_SIZE
1271 #define pct(a,b) (b ? a * 100 / b : 0)
1273 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1274 struct seq_file *seq, int which)
1276 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1277 unsigned long start, end, r, w;
1278 char *unitp = "KMGTPEZY";
1280 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1286 for(i = 0; i < LL_HIST_MAX; i++) {
1287 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1288 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1291 for(i = 0; i < LL_HIST_MAX; i++) {
1292 r = pp_info->pp_r_hist.oh_buckets[i];
1293 w = pp_info->pp_w_hist.oh_buckets[i];
1296 end = 1 << (i + LL_HIST_START - units);
1297 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1298 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1299 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1300 r, pct(r, read_tot), pct(read_cum, read_tot),
1301 w, pct(w, write_tot), pct(write_cum, write_tot));
1303 if (start == 1<<10) {
1308 if (read_cum == read_tot && write_cum == write_tot)
1313 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1316 struct ll_sb_info *sbi = seq->private;
1317 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1320 do_gettimeofday(&now);
1322 if (!sbi->ll_rw_stats_on) {
1323 seq_printf(seq, "disabled\n"
1324 "write anything in this file to activate, "
1325 "then 0 or \"[D/d]isabled\" to deactivate\n");
1328 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1329 now.tv_sec, now.tv_usec);
1330 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1331 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1332 "extents", "calls", "%", "cum%",
1333 "calls", "%", "cum%");
1334 spin_lock(&sbi->ll_pp_extent_lock);
1335 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1336 if (io_extents->pp_extents[k].pid != 0) {
1337 seq_printf(seq, "\nPID: %d\n",
1338 io_extents->pp_extents[k].pid);
1339 ll_display_extents_info(io_extents, seq, k);
1342 spin_unlock(&sbi->ll_pp_extent_lock);
1346 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1347 const char __user *buf,
1351 struct seq_file *seq = file->private_data;
1352 struct ll_sb_info *sbi = seq->private;
1353 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1355 int value = 1, rc = 0;
1360 rc = lprocfs_write_helper(buf, len, &value);
1361 if (rc < 0 && len < 16) {
1364 if (copy_from_user(kernbuf, buf, len))
1368 if (kernbuf[len - 1] == '\n')
1369 kernbuf[len - 1] = 0;
1371 if (strcmp(kernbuf, "disabled") == 0 ||
1372 strcmp(kernbuf, "Disabled") == 0)
1377 sbi->ll_rw_stats_on = 0;
1379 sbi->ll_rw_stats_on = 1;
1381 spin_lock(&sbi->ll_pp_extent_lock);
1382 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1383 io_extents->pp_extents[i].pid = 0;
1384 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1385 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1387 spin_unlock(&sbi->ll_pp_extent_lock);
1391 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1393 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1396 struct ll_sb_info *sbi = seq->private;
1397 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1399 do_gettimeofday(&now);
1401 if (!sbi->ll_rw_stats_on) {
1402 seq_printf(seq, "disabled\n"
1403 "write anything in this file to activate, "
1404 "then 0 or \"[D/d]isabled\" to deactivate\n");
1407 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1408 now.tv_sec, now.tv_usec);
1410 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1411 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1412 "extents", "calls", "%", "cum%",
1413 "calls", "%", "cum%");
1414 spin_lock(&sbi->ll_lock);
1415 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1416 spin_unlock(&sbi->ll_lock);
1421 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1422 const char __user *buf,
1423 size_t len, loff_t *off)
1425 struct seq_file *seq = file->private_data;
1426 struct ll_sb_info *sbi = seq->private;
1427 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1429 int value = 1, rc = 0;
1434 rc = lprocfs_write_helper(buf, len, &value);
1435 if (rc < 0 && len < 16) {
1438 if (copy_from_user(kernbuf, buf, len))
1442 if (kernbuf[len - 1] == '\n')
1443 kernbuf[len - 1] = 0;
1445 if (strcmp(kernbuf, "disabled") == 0 ||
1446 strcmp(kernbuf, "Disabled") == 0)
1451 sbi->ll_rw_stats_on = 0;
1453 sbi->ll_rw_stats_on = 1;
1455 spin_lock(&sbi->ll_pp_extent_lock);
1456 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1457 io_extents->pp_extents[i].pid = 0;
1458 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1459 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1461 spin_unlock(&sbi->ll_pp_extent_lock);
1465 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1467 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1468 struct ll_file_data *file, loff_t pos,
1469 size_t count, int rw)
1472 struct ll_rw_process_info *process;
1473 struct ll_rw_process_info *offset;
1474 int *off_count = &sbi->ll_rw_offset_entry_count;
1475 int *process_count = &sbi->ll_offset_process_count;
1476 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1478 if(!sbi->ll_rw_stats_on)
1480 process = sbi->ll_rw_process_info;
1481 offset = sbi->ll_rw_offset_info;
1483 spin_lock(&sbi->ll_pp_extent_lock);
1484 /* Extent statistics */
1485 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1486 if(io_extents->pp_extents[i].pid == pid) {
1494 sbi->ll_extent_process_count =
1495 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1496 cur = sbi->ll_extent_process_count;
1497 io_extents->pp_extents[cur].pid = pid;
1498 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1499 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1502 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1503 (i < (LL_HIST_MAX - 1)); i++);
1505 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1506 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1508 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1509 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1511 spin_unlock(&sbi->ll_pp_extent_lock);
1513 spin_lock(&sbi->ll_process_lock);
1514 /* Offset statistics */
1515 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1516 if (process[i].rw_pid == pid) {
1517 if (process[i].rw_last_file != file) {
1518 process[i].rw_range_start = pos;
1519 process[i].rw_last_file_pos = pos + count;
1520 process[i].rw_smallest_extent = count;
1521 process[i].rw_largest_extent = count;
1522 process[i].rw_offset = 0;
1523 process[i].rw_last_file = file;
1524 spin_unlock(&sbi->ll_process_lock);
1527 if (process[i].rw_last_file_pos != pos) {
1529 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1530 offset[*off_count].rw_op = process[i].rw_op;
1531 offset[*off_count].rw_pid = pid;
1532 offset[*off_count].rw_range_start =
1533 process[i].rw_range_start;
1534 offset[*off_count].rw_range_end =
1535 process[i].rw_last_file_pos;
1536 offset[*off_count].rw_smallest_extent =
1537 process[i].rw_smallest_extent;
1538 offset[*off_count].rw_largest_extent =
1539 process[i].rw_largest_extent;
1540 offset[*off_count].rw_offset =
1541 process[i].rw_offset;
1542 process[i].rw_op = rw;
1543 process[i].rw_range_start = pos;
1544 process[i].rw_smallest_extent = count;
1545 process[i].rw_largest_extent = count;
1546 process[i].rw_offset = pos -
1547 process[i].rw_last_file_pos;
1549 if(process[i].rw_smallest_extent > count)
1550 process[i].rw_smallest_extent = count;
1551 if(process[i].rw_largest_extent < count)
1552 process[i].rw_largest_extent = count;
1553 process[i].rw_last_file_pos = pos + count;
1554 spin_unlock(&sbi->ll_process_lock);
1558 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1559 process[*process_count].rw_pid = pid;
1560 process[*process_count].rw_op = rw;
1561 process[*process_count].rw_range_start = pos;
1562 process[*process_count].rw_last_file_pos = pos + count;
1563 process[*process_count].rw_smallest_extent = count;
1564 process[*process_count].rw_largest_extent = count;
1565 process[*process_count].rw_offset = 0;
1566 process[*process_count].rw_last_file = file;
1567 spin_unlock(&sbi->ll_process_lock);
1570 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1573 struct ll_sb_info *sbi = seq->private;
1574 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1575 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1578 do_gettimeofday(&now);
1580 if (!sbi->ll_rw_stats_on) {
1581 seq_printf(seq, "disabled\n"
1582 "write anything in this file to activate, "
1583 "then 0 or \"[D/d]isabled\" to deactivate\n");
1586 spin_lock(&sbi->ll_process_lock);
1588 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1589 now.tv_sec, now.tv_usec);
1590 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1591 "R/W", "PID", "RANGE START", "RANGE END",
1592 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1594 /* We stored the discontiguous offsets here; print them first */
1595 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1596 if (offset[i].rw_pid != 0)
1598 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1599 offset[i].rw_op == READ ? 'R' : 'W',
1601 offset[i].rw_range_start,
1602 offset[i].rw_range_end,
1603 (unsigned long)offset[i].rw_smallest_extent,
1604 (unsigned long)offset[i].rw_largest_extent,
1605 offset[i].rw_offset);
1608 /* Then print the current offsets for each process */
1609 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1610 if (process[i].rw_pid != 0)
1612 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1613 process[i].rw_op == READ ? 'R' : 'W',
1615 process[i].rw_range_start,
1616 process[i].rw_last_file_pos,
1617 (unsigned long)process[i].rw_smallest_extent,
1618 (unsigned long)process[i].rw_largest_extent,
1619 process[i].rw_offset);
1621 spin_unlock(&sbi->ll_process_lock);
1626 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
1627 const char __user *buf,
1628 size_t len, loff_t *off)
1630 struct seq_file *seq = file->private_data;
1631 struct ll_sb_info *sbi = seq->private;
1632 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1633 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1634 int value = 1, rc = 0;
1639 rc = lprocfs_write_helper(buf, len, &value);
1641 if (rc < 0 && len < 16) {
1644 if (copy_from_user(kernbuf, buf, len))
1648 if (kernbuf[len - 1] == '\n')
1649 kernbuf[len - 1] = 0;
1651 if (strcmp(kernbuf, "disabled") == 0 ||
1652 strcmp(kernbuf, "Disabled") == 0)
1657 sbi->ll_rw_stats_on = 0;
1659 sbi->ll_rw_stats_on = 1;
1661 spin_lock(&sbi->ll_process_lock);
1662 sbi->ll_offset_process_count = 0;
1663 sbi->ll_rw_offset_entry_count = 0;
1664 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1665 LL_PROCESS_HIST_MAX);
1666 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1667 LL_OFFSET_HIST_MAX);
1668 spin_unlock(&sbi->ll_process_lock);
1673 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1674 #endif /* LPROCFS */