4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 #define DEBUG_SUBSYSTEM S_LLITE
34 #include <linux/version.h>
35 #include <linux/user_namespace.h>
36 #ifdef HAVE_UIDGID_HEADER
37 # include <linux/uidgid.h>
39 #include <uapi/linux/lustre/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;
53 static __s64 ll_stats_pid_write(const char __user *buf, size_t len);
55 static int ll_blksize_seq_show(struct seq_file *m, void *v)
57 struct super_block *sb = m->private;
58 struct obd_statfs osfs;
62 rc = ll_statfs_internal(sb, &osfs, OBD_STATFS_NODELAY);
64 seq_printf(m, "%u\n", osfs.os_bsize);
67 LPROC_SEQ_FOPS_RO(ll_blksize);
69 static int ll_stat_blksize_seq_show(struct seq_file *m, void *v)
71 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
73 seq_printf(m, "%u\n", sbi->ll_stat_blksize);
78 static ssize_t ll_stat_blksize_seq_write(struct file *file,
79 const char __user *buffer,
80 size_t count, loff_t *off)
82 struct seq_file *m = file->private_data;
83 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
87 rc = lprocfs_str_to_s64(buffer, count, &val);
91 if (val != 0 && (val < PAGE_SIZE || (val & (val - 1))) != 0)
94 sbi->ll_stat_blksize = val;
98 LPROC_SEQ_FOPS(ll_stat_blksize);
100 static int ll_kbytestotal_seq_show(struct seq_file *m, void *v)
102 struct super_block *sb = m->private;
103 struct obd_statfs osfs;
107 rc = ll_statfs_internal(sb, &osfs, OBD_STATFS_NODELAY);
109 __u32 blk_size = osfs.os_bsize >> 10;
110 __u64 result = osfs.os_blocks;
112 while (blk_size >>= 1)
115 seq_printf(m, "%llu\n", result);
119 LPROC_SEQ_FOPS_RO(ll_kbytestotal);
121 static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
123 struct super_block *sb = m->private;
124 struct obd_statfs osfs;
128 rc = ll_statfs_internal(sb, &osfs, OBD_STATFS_NODELAY);
130 __u32 blk_size = osfs.os_bsize >> 10;
131 __u64 result = osfs.os_bfree;
133 while (blk_size >>= 1)
136 seq_printf(m, "%llu\n", result);
140 LPROC_SEQ_FOPS_RO(ll_kbytesfree);
142 static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
144 struct super_block *sb = m->private;
145 struct obd_statfs osfs;
149 rc = ll_statfs_internal(sb, &osfs, OBD_STATFS_NODELAY);
151 __u32 blk_size = osfs.os_bsize >> 10;
152 __u64 result = osfs.os_bavail;
154 while (blk_size >>= 1)
157 seq_printf(m, "%llu\n", result);
161 LPROC_SEQ_FOPS_RO(ll_kbytesavail);
163 static int ll_filestotal_seq_show(struct seq_file *m, void *v)
165 struct super_block *sb = m->private;
166 struct obd_statfs osfs;
170 rc = ll_statfs_internal(sb, &osfs, OBD_STATFS_NODELAY);
172 seq_printf(m, "%llu\n", osfs.os_files);
175 LPROC_SEQ_FOPS_RO(ll_filestotal);
177 static int ll_filesfree_seq_show(struct seq_file *m, void *v)
179 struct super_block *sb = m->private;
180 struct obd_statfs osfs;
184 rc = ll_statfs_internal(sb, &osfs, OBD_STATFS_NODELAY);
186 seq_printf(m, "%llu\n", osfs.os_ffree);
189 LPROC_SEQ_FOPS_RO(ll_filesfree);
191 static int ll_client_type_seq_show(struct seq_file *m, void *v)
193 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
195 LASSERT(sbi != NULL);
197 seq_puts(m, "local client\n");
200 LPROC_SEQ_FOPS_RO(ll_client_type);
202 static int ll_fstype_seq_show(struct seq_file *m, void *v)
204 struct super_block *sb = m->private;
207 seq_printf(m, "%s\n", sb->s_type->name);
210 LPROC_SEQ_FOPS_RO(ll_fstype);
212 static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
214 struct super_block *sb = m->private;
217 seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
220 LPROC_SEQ_FOPS_RO(ll_sb_uuid);
222 static int ll_xattr_cache_seq_show(struct seq_file *m, void *v)
224 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
226 seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
230 static ssize_t ll_xattr_cache_seq_write(struct file *file,
231 const char __user *buffer,
232 size_t count, loff_t *off)
234 struct seq_file *m = file->private_data;
235 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
239 rc = lprocfs_str_to_s64(buffer, count, &val);
243 if (val != 0 && val != 1)
246 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
249 sbi->ll_xattr_cache_enabled = val;
250 sbi->ll_xattr_cache_set = 1;
254 LPROC_SEQ_FOPS(ll_xattr_cache);
256 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
258 struct super_block *sb = m->private;
261 * See description of statistical counters in struct cl_site, and
264 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
266 LPROC_SEQ_FOPS_RO(ll_site_stats);
268 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
270 struct super_block *sb = m->private;
271 struct ll_sb_info *sbi = ll_s2sbi(sb);
275 spin_lock(&sbi->ll_lock);
276 pages_number = sbi->ll_ra_info.ra_max_pages;
277 spin_unlock(&sbi->ll_lock);
279 mult = 1 << (20 - PAGE_SHIFT);
280 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
284 ll_max_readahead_mb_seq_write(struct file *file, const char __user *buffer,
285 size_t count, loff_t *off)
287 struct seq_file *m = file->private_data;
288 struct super_block *sb = m->private;
289 struct ll_sb_info *sbi = ll_s2sbi(sb);
293 rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
297 pages_number >>= PAGE_SHIFT;
299 if (pages_number < 0 || pages_number > totalram_pages / 2) {
301 CERROR("%s: can't set max_readahead_mb=%lu > %luMB\n",
302 ll_get_fsname(sb, NULL, 0),
303 (unsigned long)pages_number >> (20 - PAGE_SHIFT),
304 totalram_pages >> (20 - PAGE_SHIFT + 1));
308 spin_lock(&sbi->ll_lock);
309 sbi->ll_ra_info.ra_max_pages = pages_number;
310 spin_unlock(&sbi->ll_lock);
313 LPROC_SEQ_FOPS(ll_max_readahead_mb);
315 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
317 struct super_block *sb = m->private;
318 struct ll_sb_info *sbi = ll_s2sbi(sb);
322 spin_lock(&sbi->ll_lock);
323 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
324 spin_unlock(&sbi->ll_lock);
326 mult = 1 << (20 - PAGE_SHIFT);
327 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
331 ll_max_readahead_per_file_mb_seq_write(struct file *file,
332 const char __user *buffer,
333 size_t count, loff_t *off)
335 struct seq_file *m = file->private_data;
336 struct super_block *sb = m->private;
337 struct ll_sb_info *sbi = ll_s2sbi(sb);
341 rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
345 pages_number >>= PAGE_SHIFT;
347 if (pages_number < 0 || pages_number > sbi->ll_ra_info.ra_max_pages) {
348 CERROR("%s: can't set max_readahead_per_file_mb=%lu > "
349 "max_read_ahead_mb=%lu\n", ll_get_fsname(sb, NULL, 0),
350 (unsigned long)pages_number >> (20 - PAGE_SHIFT),
351 sbi->ll_ra_info.ra_max_pages >> (20 - PAGE_SHIFT));
355 spin_lock(&sbi->ll_lock);
356 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
357 spin_unlock(&sbi->ll_lock);
360 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
362 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *v)
364 struct super_block *sb = m->private;
365 struct ll_sb_info *sbi = ll_s2sbi(sb);
369 spin_lock(&sbi->ll_lock);
370 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
371 spin_unlock(&sbi->ll_lock);
373 mult = 1 << (20 - PAGE_SHIFT);
374 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
378 ll_max_read_ahead_whole_mb_seq_write(struct file *file,
379 const char __user *buffer,
380 size_t count, loff_t *off)
382 struct seq_file *m = file->private_data;
383 struct super_block *sb = m->private;
384 struct ll_sb_info *sbi = ll_s2sbi(sb);
388 rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
392 pages_number >>= PAGE_SHIFT;
394 /* Cap this at the current max readahead window size, the readahead
395 * algorithm does this anyway so it's pointless to set it larger. */
396 if (pages_number < 0 ||
397 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
398 int pages_shift = 20 - PAGE_SHIFT;
399 CERROR("%s: can't set max_read_ahead_whole_mb=%lu > "
400 "max_read_ahead_per_file_mb=%lu\n",
401 ll_get_fsname(sb, NULL, 0),
402 (unsigned long)pages_number >> pages_shift,
403 sbi->ll_ra_info.ra_max_pages_per_file >> pages_shift);
407 spin_lock(&sbi->ll_lock);
408 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
409 spin_unlock(&sbi->ll_lock);
412 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
414 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
416 struct super_block *sb = m->private;
417 struct ll_sb_info *sbi = ll_s2sbi(sb);
418 struct cl_client_cache *cache = sbi->ll_cache;
419 int shift = 20 - PAGE_SHIFT;
423 max_cached_mb = cache->ccc_lru_max >> shift;
424 unused_mb = atomic_long_read(&cache->ccc_lru_left) >> shift;
425 seq_printf(m, "users: %d\n"
426 "max_cached_mb: %ld\n"
429 "reclaim_count: %u\n",
430 atomic_read(&cache->ccc_users),
432 max_cached_mb - unused_mb,
434 cache->ccc_lru_shrinkers);
439 ll_max_cached_mb_seq_write(struct file *file, const char __user *buffer,
440 size_t count, loff_t *off)
442 struct seq_file *m = file->private_data;
443 struct super_block *sb = m->private;
444 struct ll_sb_info *sbi = ll_s2sbi(sb);
445 struct cl_client_cache *cache = sbi->ll_cache;
455 if (count >= sizeof(kernbuf))
458 if (copy_from_user(kernbuf, buffer, count))
462 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
464 rc = lprocfs_str_with_units_to_s64(buffer, count, &pages_number, 'M');
468 pages_number >>= PAGE_SHIFT;
470 if (pages_number < 0 || pages_number > totalram_pages) {
471 CERROR("%s: can't set max cache more than %lu MB\n",
472 ll_get_fsname(sb, NULL, 0),
473 totalram_pages >> (20 - PAGE_SHIFT));
476 /* Allow enough cache so clients can make well-formed RPCs */
477 pages_number = max_t(long, pages_number, PTLRPC_MAX_BRW_PAGES);
479 spin_lock(&sbi->ll_lock);
480 diff = pages_number - cache->ccc_lru_max;
481 spin_unlock(&sbi->ll_lock);
483 /* easy - add more LRU slots. */
485 atomic_long_add(diff, &cache->ccc_lru_left);
489 env = cl_env_get(&refcheck);
497 /* reduce LRU budget from free slots. */
501 ov = atomic_long_read(&cache->ccc_lru_left);
505 nv = ov > diff ? ov - diff : 0;
506 rc = atomic_long_cmpxchg(&cache->ccc_lru_left, ov, nv);
507 if (likely(ov == rc)) {
517 if (sbi->ll_dt_exp == NULL) { /* being initialized */
522 /* difficult - have to ask OSCs to drop LRU slots. */
524 rc = obd_set_info_async(env, sbi->ll_dt_exp,
525 sizeof(KEY_CACHE_LRU_SHRINK),
526 KEY_CACHE_LRU_SHRINK,
527 sizeof(tmp), &tmp, NULL);
531 cl_env_put(env, &refcheck);
535 spin_lock(&sbi->ll_lock);
536 cache->ccc_lru_max = pages_number;
537 spin_unlock(&sbi->ll_lock);
540 atomic_long_add(nrpages, &cache->ccc_lru_left);
544 LPROC_SEQ_FOPS(ll_max_cached_mb);
546 static int ll_checksum_seq_show(struct seq_file *m, void *v)
548 struct super_block *sb = m->private;
549 struct ll_sb_info *sbi = ll_s2sbi(sb);
551 seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
555 static ssize_t ll_checksum_seq_write(struct file *file,
556 const char __user *buffer,
557 size_t count, loff_t *off)
559 struct seq_file *m = file->private_data;
560 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
568 rc = lprocfs_str_to_s64(buffer, count, &val);
572 sbi->ll_flags |= LL_SBI_CHECKSUM;
574 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
576 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
577 KEY_CHECKSUM, sizeof(val), &val, NULL);
579 CWARN("Failed to set OSC checksum flags: %d\n", rc);
583 LPROC_SEQ_FOPS(ll_checksum);
585 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
587 struct super_block *sb = m->private;
589 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
590 seq_printf(m, "%d\n",
591 ll_s2sbi(sb)->ll_stats_track_id);
592 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
593 seq_puts(m, "0 (all)\n");
595 seq_puts(m, "untracked\n");
600 static int ll_wr_track_id(const char __user *buffer, unsigned long count,
601 void *data, enum stats_track_type type)
603 struct super_block *sb = data;
607 rc = lprocfs_str_to_s64(buffer, count, &pid);
610 if (pid > INT_MAX || pid < 0)
613 ll_s2sbi(sb)->ll_stats_track_id = pid;
615 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
617 ll_s2sbi(sb)->ll_stats_track_type = type;
618 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
622 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
624 return ll_rd_track_id(m, STATS_TRACK_PID);
627 static ssize_t ll_track_pid_seq_write(struct file *file,
628 const char __user *buffer,
629 size_t count, loff_t *off)
631 struct seq_file *seq = file->private_data;
632 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
634 LPROC_SEQ_FOPS(ll_track_pid);
636 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
638 return ll_rd_track_id(m, STATS_TRACK_PPID);
641 static ssize_t ll_track_ppid_seq_write(struct file *file,
642 const char __user *buffer,
643 size_t count, loff_t *off)
645 struct seq_file *seq = file->private_data;
646 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
648 LPROC_SEQ_FOPS(ll_track_ppid);
650 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
652 return ll_rd_track_id(m, STATS_TRACK_GID);
655 static ssize_t ll_track_gid_seq_write(struct file *file,
656 const char __user *buffer,
657 size_t count, loff_t *off)
659 struct seq_file *seq = file->private_data;
660 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
662 LPROC_SEQ_FOPS(ll_track_gid);
664 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
666 struct super_block *sb = m->private;
667 struct ll_sb_info *sbi = ll_s2sbi(sb);
669 seq_printf(m, "%u\n", sbi->ll_sa_max);
673 static ssize_t ll_statahead_max_seq_write(struct file *file,
674 const char __user *buffer,
675 size_t count, loff_t *off)
677 struct seq_file *m = file->private_data;
678 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
682 rc = lprocfs_str_to_s64(buffer, count, &val);
686 if (val >= 0 && val <= LL_SA_RPC_MAX)
687 sbi->ll_sa_max = val;
689 CERROR("Bad statahead_max value %lld. Valid values are in "
690 "the 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 seq_printf(m, "%u\n",
702 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
706 static ssize_t ll_statahead_agl_seq_write(struct file *file,
707 const char __user *buffer,
708 size_t count, loff_t *off)
710 struct seq_file *m = file->private_data;
711 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
715 rc = lprocfs_str_to_s64(buffer, count, &val);
720 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
722 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
726 LPROC_SEQ_FOPS(ll_statahead_agl);
728 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
730 struct super_block *sb = m->private;
731 struct ll_sb_info *sbi = ll_s2sbi(sb);
733 seq_printf(m, "statahead total: %u\n"
734 "statahead wrong: %u\n"
736 atomic_read(&sbi->ll_sa_total),
737 atomic_read(&sbi->ll_sa_wrong),
738 atomic_read(&sbi->ll_agl_total));
741 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
743 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
745 struct super_block *sb = m->private;
746 struct ll_sb_info *sbi = ll_s2sbi(sb);
748 seq_printf(m, "%u\n",
749 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
753 static ssize_t ll_lazystatfs_seq_write(struct file *file,
754 const char __user *buffer,
755 size_t count, loff_t *off)
757 struct seq_file *m = file->private_data;
758 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
762 rc = lprocfs_str_to_s64(buffer, count, &val);
767 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
769 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
773 LPROC_SEQ_FOPS(ll_lazystatfs);
775 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
777 struct super_block *sb = m->private;
778 struct ll_sb_info *sbi = ll_s2sbi(sb);
782 rc = ll_get_max_mdsize(sbi, &ealen);
786 seq_printf(m, "%u\n", ealen);
789 LPROC_SEQ_FOPS_RO(ll_max_easize);
792 * Get default_easize.
794 * \see client_obd::cl_default_mds_easize
796 * \param[in] m seq_file handle
797 * \param[in] v unused for single entry
799 * \retval 0 on success
800 * \retval negative negated errno on failure
802 static int ll_default_easize_seq_show(struct seq_file *m, void *v)
804 struct super_block *sb = m->private;
805 struct ll_sb_info *sbi = ll_s2sbi(sb);
809 rc = ll_get_default_mdsize(sbi, &ealen);
813 seq_printf(m, "%u\n", ealen);
818 * Set default_easize.
820 * Range checking on the passed value is handled by
821 * ll_set_default_mdsize().
823 * \see client_obd::cl_default_mds_easize
825 * \param[in] file proc file
826 * \param[in] buffer string passed from user space
827 * \param[in] count \a buffer length
828 * \param[in] off unused for single entry
830 * \retval positive \a count on success
831 * \retval negative negated errno on failure
833 static ssize_t ll_default_easize_seq_write(struct file *file,
834 const char __user *buffer,
835 size_t count, loff_t *unused)
837 struct seq_file *seq = file->private_data;
838 struct super_block *sb = (struct super_block *)seq->private;
839 struct ll_sb_info *sbi = ll_s2sbi(sb);
846 rc = lprocfs_str_to_s64(buffer, count, &val);
849 if (val < 0 || val > INT_MAX)
852 rc = ll_set_default_mdsize(sbi, val);
858 LPROC_SEQ_FOPS(ll_default_easize);
860 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
862 const char *str[] = LL_SBI_FLAGS;
863 struct super_block *sb = m->private;
864 int flags = ll_s2sbi(sb)->ll_flags;
868 if (ARRAY_SIZE(str) <= i) {
869 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
870 "flags please.\n", ll_get_fsname(sb, NULL, 0));
875 seq_printf(m, "%s ", str[i]);
879 seq_printf(m, "\b\n");
882 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
884 static int ll_fast_read_seq_show(struct seq_file *m, void *v)
886 struct super_block *sb = m->private;
887 struct ll_sb_info *sbi = ll_s2sbi(sb);
889 seq_printf(m, "%u\n", !!(sbi->ll_flags & LL_SBI_FAST_READ));
894 ll_fast_read_seq_write(struct file *file, 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);
903 rc = lprocfs_str_to_s64(buffer, count, &val);
907 spin_lock(&sbi->ll_lock);
909 sbi->ll_flags |= LL_SBI_FAST_READ;
911 sbi->ll_flags &= ~LL_SBI_FAST_READ;
912 spin_unlock(&sbi->ll_lock);
916 LPROC_SEQ_FOPS(ll_fast_read);
918 static int ll_pio_seq_show(struct seq_file *m, void *v)
920 struct super_block *sb = m->private;
921 struct ll_sb_info *sbi = ll_s2sbi(sb);
923 seq_printf(m, "%u\n", !!(sbi->ll_flags & LL_SBI_PIO));
927 static ssize_t ll_pio_seq_write(struct file *file, const char __user *buffer,
928 size_t count, loff_t *off)
930 struct seq_file *m = file->private_data;
931 struct super_block *sb = m->private;
932 struct ll_sb_info *sbi = ll_s2sbi(sb);
936 rc = lprocfs_str_to_s64(buffer, count, &val);
940 spin_lock(&sbi->ll_lock);
942 sbi->ll_flags |= LL_SBI_PIO;
944 sbi->ll_flags &= ~LL_SBI_PIO;
945 spin_unlock(&sbi->ll_lock);
949 LPROC_SEQ_FOPS(ll_pio);
951 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
953 struct super_block *sb = m->private;
954 struct ll_sb_info *sbi = ll_s2sbi(sb);
955 struct cl_client_cache *cache = sbi->ll_cache;
959 pages = atomic_long_read(&cache->ccc_unstable_nr);
960 mb = (pages * PAGE_SIZE) >> 20;
962 seq_printf(m, "unstable_check: %8d\n"
963 "unstable_pages: %12ld\n"
964 "unstable_mb: %8d\n",
965 cache->ccc_unstable_check, pages, mb);
969 static ssize_t ll_unstable_stats_seq_write(struct file *file,
970 const char __user *buffer,
971 size_t count, loff_t *unused)
973 struct seq_file *seq = file->private_data;
974 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
981 if (count >= sizeof(kernbuf))
984 if (copy_from_user(kernbuf, buffer, count))
988 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
990 rc = lprocfs_str_to_s64(buffer, count, &val);
994 /* borrow lru lock to set the value */
995 spin_lock(&sbi->ll_cache->ccc_lru_lock);
996 sbi->ll_cache->ccc_unstable_check = !!val;
997 spin_unlock(&sbi->ll_cache->ccc_lru_lock);
1001 LPROC_SEQ_FOPS(ll_unstable_stats);
1003 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
1005 struct super_block *sb = m->private;
1006 struct ll_sb_info *sbi = ll_s2sbi(sb);
1007 struct root_squash_info *squash = &sbi->ll_squash;
1009 seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
1013 static ssize_t ll_root_squash_seq_write(struct file *file,
1014 const char __user *buffer,
1015 size_t count, loff_t *off)
1017 struct seq_file *m = file->private_data;
1018 struct super_block *sb = m->private;
1019 struct ll_sb_info *sbi = ll_s2sbi(sb);
1020 struct root_squash_info *squash = &sbi->ll_squash;
1022 return lprocfs_wr_root_squash(buffer, count, squash,
1023 ll_get_fsname(sb, NULL, 0));
1025 LPROC_SEQ_FOPS(ll_root_squash);
1027 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
1029 struct super_block *sb = m->private;
1030 struct ll_sb_info *sbi = ll_s2sbi(sb);
1031 struct root_squash_info *squash = &sbi->ll_squash;
1034 down_read(&squash->rsi_sem);
1035 if (!list_empty(&squash->rsi_nosquash_nids)) {
1036 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
1037 &squash->rsi_nosquash_nids);
1041 seq_puts(m, "NONE\n");
1043 up_read(&squash->rsi_sem);
1048 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
1049 const char __user *buffer,
1050 size_t count, loff_t *off)
1052 struct seq_file *m = file->private_data;
1053 struct super_block *sb = m->private;
1054 struct ll_sb_info *sbi = ll_s2sbi(sb);
1055 struct root_squash_info *squash = &sbi->ll_squash;
1058 rc = lprocfs_wr_nosquash_nids(buffer, count, squash,
1059 ll_get_fsname(sb, NULL, 0));
1063 ll_compute_rootsquash_state(sbi);
1067 LPROC_SEQ_FOPS(ll_nosquash_nids);
1069 struct lprocfs_vars lprocfs_llite_obd_vars[] = {
1071 .fops = &ll_sb_uuid_fops },
1073 .fops = &ll_fstype_fops },
1075 .fops = &ll_site_stats_fops },
1076 { .name = "blocksize",
1077 .fops = &ll_blksize_fops },
1078 { .name = "stat_blocksize",
1079 .fops = &ll_stat_blksize_fops },
1080 { .name = "kbytestotal",
1081 .fops = &ll_kbytestotal_fops },
1082 { .name = "kbytesfree",
1083 .fops = &ll_kbytesfree_fops },
1084 { .name = "kbytesavail",
1085 .fops = &ll_kbytesavail_fops },
1086 { .name = "filestotal",
1087 .fops = &ll_filestotal_fops },
1088 { .name = "filesfree",
1089 .fops = &ll_filesfree_fops },
1090 { .name = "client_type",
1091 .fops = &ll_client_type_fops },
1092 { .name = "max_read_ahead_mb",
1093 .fops = &ll_max_readahead_mb_fops },
1094 { .name = "max_read_ahead_per_file_mb",
1095 .fops = &ll_max_readahead_per_file_mb_fops },
1096 { .name = "max_read_ahead_whole_mb",
1097 .fops = &ll_max_read_ahead_whole_mb_fops },
1098 { .name = "max_cached_mb",
1099 .fops = &ll_max_cached_mb_fops },
1100 { .name = "checksum_pages",
1101 .fops = &ll_checksum_fops },
1102 { .name = "stats_track_pid",
1103 .fops = &ll_track_pid_fops },
1104 { .name = "stats_track_ppid",
1105 .fops = &ll_track_ppid_fops },
1106 { .name = "stats_track_gid",
1107 .fops = &ll_track_gid_fops },
1108 { .name = "statahead_max",
1109 .fops = &ll_statahead_max_fops },
1110 { .name = "statahead_agl",
1111 .fops = &ll_statahead_agl_fops },
1112 { .name = "statahead_stats",
1113 .fops = &ll_statahead_stats_fops },
1114 { .name = "lazystatfs",
1115 .fops = &ll_lazystatfs_fops },
1116 { .name = "max_easize",
1117 .fops = &ll_max_easize_fops },
1118 { .name = "default_easize",
1119 .fops = &ll_default_easize_fops },
1120 { .name = "sbi_flags",
1121 .fops = &ll_sbi_flags_fops },
1122 { .name = "xattr_cache",
1123 .fops = &ll_xattr_cache_fops },
1124 { .name = "unstable_stats",
1125 .fops = &ll_unstable_stats_fops },
1126 { .name = "root_squash",
1127 .fops = &ll_root_squash_fops },
1128 { .name = "nosquash_nids",
1129 .fops = &ll_nosquash_nids_fops },
1130 { .name = "fast_read",
1131 .fops = &ll_fast_read_fops, },
1133 .fops = &ll_pio_fops, },
1137 #define MAX_STRING_SIZE 128
1139 static const struct llite_file_opcode {
1143 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
1144 /* file operation */
1145 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
1146 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
1147 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1149 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1151 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1153 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1155 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
1156 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
1157 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
1158 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
1159 { LPROC_LL_FAULT, LPROCFS_TYPE_REGS, "page_fault" },
1160 { LPROC_LL_MKWRITE, LPROCFS_TYPE_REGS, "page_mkwrite" },
1161 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
1162 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
1163 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
1164 /* inode operation */
1165 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
1166 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
1167 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
1168 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
1169 /* dir inode operation */
1170 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
1171 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
1172 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
1173 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
1174 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
1175 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
1176 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
1177 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
1178 /* special inode operation */
1179 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
1180 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
1181 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
1182 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
1183 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
1184 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
1185 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
1186 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
1189 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
1193 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
1194 lprocfs_counter_add(sbi->ll_stats, op, count);
1195 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
1196 sbi->ll_stats_track_id == current->pid)
1197 lprocfs_counter_add(sbi->ll_stats, op, count);
1198 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
1199 sbi->ll_stats_track_id == current->parent->pid)
1200 lprocfs_counter_add(sbi->ll_stats, op, count);
1201 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
1202 sbi->ll_stats_track_id ==
1203 from_kgid(&init_user_ns, current_gid()))
1204 lprocfs_counter_add(sbi->ll_stats, op, count);
1206 EXPORT_SYMBOL(ll_stats_ops_tally);
1208 static const char *ra_stat_string[] = {
1209 [RA_STAT_HIT] = "hits",
1210 [RA_STAT_MISS] = "misses",
1211 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
1212 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
1213 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
1214 [RA_STAT_FAILED_MATCH] = "failed lock match",
1215 [RA_STAT_DISCARDED] = "read but discarded",
1216 [RA_STAT_ZERO_LEN] = "zero length file",
1217 [RA_STAT_ZERO_WINDOW] = "zero size window",
1218 [RA_STAT_EOF] = "read-ahead to EOF",
1219 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
1220 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
1221 [RA_STAT_FAILED_REACH_END] = "failed to reach end"
1224 LPROC_SEQ_FOPS_RO_TYPE(llite, name);
1225 LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
1227 int lprocfs_ll_register_mountpoint(struct proc_dir_entry *parent,
1228 struct super_block *sb)
1230 struct lprocfs_vars lvars[2];
1231 struct lustre_sb_info *lsi = s2lsi(sb);
1232 struct ll_sb_info *sbi = ll_s2sbi(sb);
1233 char name[MAX_STRING_SIZE + 1], *ptr;
1234 int err, id, len, rc;
1237 memset(lvars, 0, sizeof(lvars));
1239 name[MAX_STRING_SIZE] = '\0';
1240 lvars[0].name = name;
1242 LASSERT(sbi != NULL);
1245 len = strlen(lsi->lsi_lmd->lmd_profile);
1246 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
1247 if (ptr && (strcmp(ptr, "-client") == 0))
1251 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
1252 lsi->lsi_lmd->lmd_profile, sb);
1254 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
1255 if (IS_ERR(sbi->ll_proc_root)) {
1256 err = PTR_ERR(sbi->ll_proc_root);
1257 sbi->ll_proc_root = NULL;
1261 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
1262 &vvp_dump_pgcache_file_ops, sbi);
1264 CWARN("Error adding the dump_page_cache file\n");
1266 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
1267 &ll_rw_extents_stats_fops, sbi);
1269 CWARN("Error adding the extent_stats file\n");
1271 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
1272 0644, &ll_rw_extents_stats_pp_fops, sbi);
1274 CWARN("Error adding the extents_stats_per_process file\n");
1276 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
1277 &ll_rw_offset_stats_fops, sbi);
1279 CWARN("Error adding the offset_stats file\n");
1281 /* File operations stats */
1282 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1283 LPROCFS_STATS_FLAG_NONE);
1284 if (sbi->ll_stats == NULL)
1285 GOTO(out, err = -ENOMEM);
1286 /* do counter init */
1287 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1288 __u32 type = llite_opcode_table[id].type;
1290 if (type & LPROCFS_TYPE_REGS)
1292 else if (type & LPROCFS_TYPE_BYTES)
1294 else if (type & LPROCFS_TYPE_PAGES)
1296 lprocfs_counter_init(sbi->ll_stats,
1297 llite_opcode_table[id].opcode,
1298 (type & LPROCFS_CNTR_AVGMINMAX),
1299 llite_opcode_table[id].opname, ptr);
1301 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
1305 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1306 LPROCFS_STATS_FLAG_NONE);
1307 if (sbi->ll_ra_stats == NULL)
1308 GOTO(out, err = -ENOMEM);
1310 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1311 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1312 ra_stat_string[id], "pages");
1313 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
1319 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1325 lprocfs_remove(&sbi->ll_proc_root);
1326 lprocfs_free_stats(&sbi->ll_ra_stats);
1327 lprocfs_free_stats(&sbi->ll_stats);
1332 int lprocfs_ll_register_obd(struct super_block *sb, const char *obdname)
1334 struct lprocfs_vars lvars[2];
1335 struct ll_sb_info *sbi = ll_s2sbi(sb);
1336 struct obd_device *obd;
1337 struct proc_dir_entry *dir;
1338 char name[MAX_STRING_SIZE + 1];
1342 memset(lvars, 0, sizeof(lvars));
1344 name[MAX_STRING_SIZE] = '\0';
1345 lvars[0].name = name;
1347 LASSERT(sbi != NULL);
1348 LASSERT(obdname != NULL);
1350 obd = class_name2obd(obdname);
1352 LASSERT(obd != NULL);
1353 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1354 LASSERT(obd->obd_type->typ_name != NULL);
1356 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1358 GOTO(out, err = -ENOMEM);
1360 snprintf(name, MAX_STRING_SIZE, "common_name");
1361 lvars[0].fops = &llite_name_fops;
1362 err = lprocfs_add_vars(dir, lvars, obd);
1366 snprintf(name, MAX_STRING_SIZE, "uuid");
1367 lvars[0].fops = &llite_uuid_fops;
1368 err = lprocfs_add_vars(dir, lvars, obd);
1374 lprocfs_remove(&sbi->ll_proc_root);
1375 lprocfs_free_stats(&sbi->ll_ra_stats);
1376 lprocfs_free_stats(&sbi->ll_stats);
1381 void lprocfs_ll_unregister_mountpoint(struct ll_sb_info *sbi)
1383 if (sbi->ll_proc_root) {
1384 lprocfs_remove(&sbi->ll_proc_root);
1385 lprocfs_free_stats(&sbi->ll_ra_stats);
1386 lprocfs_free_stats(&sbi->ll_stats);
1389 #undef MAX_STRING_SIZE
1391 #define pct(a,b) (b ? a * 100 / b : 0)
1393 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1394 struct seq_file *seq, int which)
1396 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1397 unsigned long start, end, r, w;
1398 char *unitp = "KMGTPEZY";
1400 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1406 for(i = 0; i < LL_HIST_MAX; i++) {
1407 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1408 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1411 for(i = 0; i < LL_HIST_MAX; i++) {
1412 r = pp_info->pp_r_hist.oh_buckets[i];
1413 w = pp_info->pp_w_hist.oh_buckets[i];
1416 end = 1 << (i + LL_HIST_START - units);
1417 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1418 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1419 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1420 r, pct(r, read_tot), pct(read_cum, read_tot),
1421 w, pct(w, write_tot), pct(write_cum, write_tot));
1423 if (start == 1<<10) {
1428 if (read_cum == read_tot && write_cum == write_tot)
1433 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1435 struct timespec64 now;
1436 struct ll_sb_info *sbi = seq->private;
1437 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1440 ktime_get_real_ts64(&now);
1442 if (!sbi->ll_rw_stats_on) {
1443 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
1446 seq_printf(seq, "snapshot_time: %llu.%09lu (secs.nsecs)\n",
1447 (s64)now.tv_sec, now.tv_nsec);
1448 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1449 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1450 "extents", "calls", "%", "cum%",
1451 "calls", "%", "cum%");
1452 spin_lock(&sbi->ll_pp_extent_lock);
1453 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1454 if (io_extents->pp_extents[k].pid != 0) {
1455 seq_printf(seq, "\nPID: %d\n",
1456 io_extents->pp_extents[k].pid);
1457 ll_display_extents_info(io_extents, seq, k);
1460 spin_unlock(&sbi->ll_pp_extent_lock);
1464 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1465 const char __user *buf,
1469 struct seq_file *seq = file->private_data;
1470 struct ll_sb_info *sbi = seq->private;
1471 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1478 value = ll_stats_pid_write(buf, len);
1481 sbi->ll_rw_stats_on = 0;
1483 sbi->ll_rw_stats_on = 1;
1485 spin_lock(&sbi->ll_pp_extent_lock);
1486 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1487 io_extents->pp_extents[i].pid = 0;
1488 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1489 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1491 spin_unlock(&sbi->ll_pp_extent_lock);
1495 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1497 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1499 struct timespec64 now;
1500 struct ll_sb_info *sbi = seq->private;
1501 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1503 ktime_get_real_ts64(&now);
1505 if (!sbi->ll_rw_stats_on) {
1506 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
1509 seq_printf(seq, "snapshot_time: %llu.%09lu (secs.nsecs)\n",
1510 (s64)now.tv_sec, now.tv_nsec);
1512 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1513 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1514 "extents", "calls", "%", "cum%",
1515 "calls", "%", "cum%");
1516 spin_lock(&sbi->ll_lock);
1517 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1518 spin_unlock(&sbi->ll_lock);
1523 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1524 const char __user *buf,
1525 size_t len, loff_t *off)
1527 struct seq_file *seq = file->private_data;
1528 struct ll_sb_info *sbi = seq->private;
1529 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1536 value = ll_stats_pid_write(buf, len);
1539 sbi->ll_rw_stats_on = 0;
1541 sbi->ll_rw_stats_on = 1;
1543 spin_lock(&sbi->ll_pp_extent_lock);
1544 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1545 io_extents->pp_extents[i].pid = 0;
1546 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1547 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1549 spin_unlock(&sbi->ll_pp_extent_lock);
1553 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1555 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1556 struct ll_file_data *file, loff_t pos,
1557 size_t count, int rw)
1560 struct ll_rw_process_info *process;
1561 struct ll_rw_process_info *offset;
1562 int *off_count = &sbi->ll_rw_offset_entry_count;
1563 int *process_count = &sbi->ll_offset_process_count;
1564 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1566 if(!sbi->ll_rw_stats_on)
1568 process = sbi->ll_rw_process_info;
1569 offset = sbi->ll_rw_offset_info;
1571 spin_lock(&sbi->ll_pp_extent_lock);
1572 /* Extent statistics */
1573 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1574 if(io_extents->pp_extents[i].pid == pid) {
1582 sbi->ll_extent_process_count =
1583 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1584 cur = sbi->ll_extent_process_count;
1585 io_extents->pp_extents[cur].pid = pid;
1586 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1587 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1590 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1591 (i < (LL_HIST_MAX - 1)); i++);
1593 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1594 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1596 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1597 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1599 spin_unlock(&sbi->ll_pp_extent_lock);
1601 spin_lock(&sbi->ll_process_lock);
1602 /* Offset statistics */
1603 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1604 if (process[i].rw_pid == pid) {
1605 if (process[i].rw_last_file != file) {
1606 process[i].rw_range_start = pos;
1607 process[i].rw_last_file_pos = pos + count;
1608 process[i].rw_smallest_extent = count;
1609 process[i].rw_largest_extent = count;
1610 process[i].rw_offset = 0;
1611 process[i].rw_last_file = file;
1612 spin_unlock(&sbi->ll_process_lock);
1615 if (process[i].rw_last_file_pos != pos) {
1617 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1618 offset[*off_count].rw_op = process[i].rw_op;
1619 offset[*off_count].rw_pid = pid;
1620 offset[*off_count].rw_range_start =
1621 process[i].rw_range_start;
1622 offset[*off_count].rw_range_end =
1623 process[i].rw_last_file_pos;
1624 offset[*off_count].rw_smallest_extent =
1625 process[i].rw_smallest_extent;
1626 offset[*off_count].rw_largest_extent =
1627 process[i].rw_largest_extent;
1628 offset[*off_count].rw_offset =
1629 process[i].rw_offset;
1630 process[i].rw_op = rw;
1631 process[i].rw_range_start = pos;
1632 process[i].rw_smallest_extent = count;
1633 process[i].rw_largest_extent = count;
1634 process[i].rw_offset = pos -
1635 process[i].rw_last_file_pos;
1637 if(process[i].rw_smallest_extent > count)
1638 process[i].rw_smallest_extent = count;
1639 if(process[i].rw_largest_extent < count)
1640 process[i].rw_largest_extent = count;
1641 process[i].rw_last_file_pos = pos + count;
1642 spin_unlock(&sbi->ll_process_lock);
1646 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1647 process[*process_count].rw_pid = pid;
1648 process[*process_count].rw_op = rw;
1649 process[*process_count].rw_range_start = pos;
1650 process[*process_count].rw_last_file_pos = pos + count;
1651 process[*process_count].rw_smallest_extent = count;
1652 process[*process_count].rw_largest_extent = count;
1653 process[*process_count].rw_offset = 0;
1654 process[*process_count].rw_last_file = file;
1655 spin_unlock(&sbi->ll_process_lock);
1658 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1660 struct timespec64 now;
1661 struct ll_sb_info *sbi = seq->private;
1662 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1663 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1666 ktime_get_real_ts64(&now);
1668 if (!sbi->ll_rw_stats_on) {
1669 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
1672 spin_lock(&sbi->ll_process_lock);
1674 seq_printf(seq, "snapshot_time: %llu.%09lu (secs.nsecs)\n",
1675 (s64)now.tv_sec, now.tv_nsec);
1676 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1677 "R/W", "PID", "RANGE START", "RANGE END",
1678 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1680 /* We stored the discontiguous offsets here; print them first */
1681 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1682 if (offset[i].rw_pid != 0)
1684 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1685 offset[i].rw_op == READ ? 'R' : 'W',
1687 offset[i].rw_range_start,
1688 offset[i].rw_range_end,
1689 (unsigned long)offset[i].rw_smallest_extent,
1690 (unsigned long)offset[i].rw_largest_extent,
1691 offset[i].rw_offset);
1694 /* Then print the current offsets for each process */
1695 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1696 if (process[i].rw_pid != 0)
1698 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1699 process[i].rw_op == READ ? 'R' : 'W',
1701 process[i].rw_range_start,
1702 process[i].rw_last_file_pos,
1703 (unsigned long)process[i].rw_smallest_extent,
1704 (unsigned long)process[i].rw_largest_extent,
1705 process[i].rw_offset);
1707 spin_unlock(&sbi->ll_process_lock);
1712 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
1713 const char __user *buf,
1714 size_t len, loff_t *off)
1716 struct seq_file *seq = file->private_data;
1717 struct ll_sb_info *sbi = seq->private;
1718 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1719 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1725 value = ll_stats_pid_write(buf, len);
1728 sbi->ll_rw_stats_on = 0;
1730 sbi->ll_rw_stats_on = 1;
1732 spin_lock(&sbi->ll_process_lock);
1733 sbi->ll_offset_process_count = 0;
1734 sbi->ll_rw_offset_entry_count = 0;
1735 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1736 LL_PROCESS_HIST_MAX);
1737 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1738 LL_OFFSET_HIST_MAX);
1739 spin_unlock(&sbi->ll_process_lock);
1745 * ll_stats_pid_write() - Determine if stats collection should be enabled
1746 * @buf: Buffer containing the data written
1747 * @len: Number of bytes in the buffer
1749 * Several proc files begin collecting stats when a value is written, and stop
1750 * collecting when either '0' or 'disable' is written. This function checks the
1751 * written value to see if collection should be enabled or disabled.
1753 * Return: If '0' or 'disable' is provided, 0 is returned. If the text
1754 * equivalent of a number is written, that number is returned. Otherwise,
1755 * 1 is returned. Non-zero return values indicate collection should be enabled.
1757 static __s64 ll_stats_pid_write(const char __user *buf, size_t len)
1763 rc = lprocfs_str_to_s64(buf, len, &value);
1765 if (rc < 0 && len < sizeof(kernbuf)) {
1767 if (copy_from_user(kernbuf, buf, len))
1771 if (kernbuf[len - 1] == '\n')
1772 kernbuf[len - 1] = 0;
1774 if (strncasecmp(kernbuf, "disable", 7) == 0)
1781 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1782 #endif /* CONFIG_PROC_FS */