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/
31 #define DEBUG_SUBSYSTEM S_LLITE
33 #include <linux/version.h>
34 #include <linux/user_namespace.h>
35 #include <linux/uidgid.h>
37 #include <uapi/linux/lustre/lustre_param.h>
38 #include <lprocfs_status.h>
39 #include <obd_support.h>
41 #include "llite_internal.h"
42 #include "lprocfs_status.h"
43 #include "vvp_internal.h"
45 static struct kobject *llite_kobj;
46 static struct dentry *llite_root;
48 static void llite_kobj_release(struct kobject *kobj)
50 if (!IS_ERR_OR_NULL(llite_root)) {
51 debugfs_remove(llite_root);
58 static struct kobj_type llite_kobj_ktype = {
59 .release = llite_kobj_release,
60 .sysfs_ops = &lustre_sysfs_ops,
63 int llite_tunables_register(void)
67 llite_kobj = kzalloc(sizeof(*llite_kobj), GFP_KERNEL);
71 llite_kobj->kset = lustre_kset;
72 rc = kobject_init_and_add(llite_kobj, &llite_kobj_ktype,
73 &lustre_kset->kobj, "%s", "llite");
77 llite_root = debugfs_create_dir("llite", debugfs_lustre_root);
81 kobject_put(llite_kobj);
87 void llite_tunables_unregister(void)
89 kobject_put(llite_kobj);
93 /* <debugfs>/lustre/llite mount point registration */
94 static const struct file_operations ll_rw_extents_stats_fops;
95 static const struct file_operations ll_rw_extents_stats_pp_fops;
96 static const struct file_operations ll_rw_offset_stats_fops;
99 * ll_stats_pid_write() - Determine if stats collection should be enabled
100 * @buf: Buffer containing the data written
101 * @len: Number of bytes in the buffer
103 * Several proc files begin collecting stats when a value is written, and stop
104 * collecting when either '0' or 'disable' is written. This function checks the
105 * written value to see if collection should be enabled or disabled.
107 * Return: If '0' or 'disable' is provided, 0 is returned. If the text
108 * equivalent of a number is written, that number is returned. Otherwise,
109 * 1 is returned. Non-zero return values indicate collection should be enabled.
111 static s64 ll_stats_pid_write(const char __user *buf, size_t len)
113 unsigned long long value = 1;
117 rc = kstrtoull_from_user(buf, len, 0, &value);
118 if (rc < 0 && len < sizeof(kernbuf)) {
119 if (copy_from_user(kernbuf, buf, len))
123 if (kernbuf[len - 1] == '\n')
124 kernbuf[len - 1] = 0;
126 if (strncasecmp(kernbuf, "disable", 7) == 0)
133 static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
136 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
138 struct obd_statfs osfs;
141 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
145 return sprintf(buf, "%u\n", osfs.os_bsize);
147 LUSTRE_RO_ATTR(blocksize);
149 static ssize_t stat_blocksize_show(struct kobject *kobj, struct attribute *attr,
152 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
155 return sprintf(buf, "%u\n", sbi->ll_stat_blksize);
158 static ssize_t stat_blocksize_store(struct kobject *kobj,
159 struct attribute *attr,
163 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
168 rc = kstrtouint(buffer, 10, &val);
172 if (val != 0 && (val < PAGE_SIZE || (val & (val - 1))) != 0)
175 sbi->ll_stat_blksize = val;
179 LUSTRE_RW_ATTR(stat_blocksize);
181 static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
184 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
186 struct obd_statfs osfs;
191 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
195 blk_size = osfs.os_bsize >> 10;
196 result = osfs.os_blocks;
198 while (blk_size >>= 1)
201 return sprintf(buf, "%llu\n", result);
203 LUSTRE_RO_ATTR(kbytestotal);
205 static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
208 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
210 struct obd_statfs osfs;
215 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
219 blk_size = osfs.os_bsize >> 10;
220 result = osfs.os_bfree;
222 while (blk_size >>= 1)
225 return sprintf(buf, "%llu\n", result);
227 LUSTRE_RO_ATTR(kbytesfree);
229 static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
232 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
234 struct obd_statfs osfs;
239 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
243 blk_size = osfs.os_bsize >> 10;
244 result = osfs.os_bavail;
246 while (blk_size >>= 1)
249 return sprintf(buf, "%llu\n", result);
251 LUSTRE_RO_ATTR(kbytesavail);
253 static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
256 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
258 struct obd_statfs osfs;
261 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
265 return sprintf(buf, "%llu\n", osfs.os_files);
267 LUSTRE_RO_ATTR(filestotal);
269 static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
272 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
274 struct obd_statfs osfs;
277 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
281 return sprintf(buf, "%llu\n", osfs.os_ffree);
283 LUSTRE_RO_ATTR(filesfree);
285 static ssize_t client_type_show(struct kobject *kobj, struct attribute *attr,
288 return sprintf(buf, "local client\n");
290 LUSTRE_RO_ATTR(client_type);
292 LUSTRE_RW_ATTR(foreign_symlink_enable);
294 LUSTRE_RW_ATTR(foreign_symlink_prefix);
296 LUSTRE_RW_ATTR(foreign_symlink_upcall);
298 LUSTRE_WO_ATTR(foreign_symlink_upcall_info);
300 static ssize_t fstype_show(struct kobject *kobj, struct attribute *attr,
303 return sprintf(buf, "lustre\n");
305 LUSTRE_RO_ATTR(fstype);
307 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
310 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
313 return sprintf(buf, "%s\n", sbi->ll_sb_uuid.uuid);
315 LUSTRE_RO_ATTR(uuid);
317 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
319 struct super_block *sb = m->private;
322 * See description of statistical counters in struct cl_site, and
325 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
328 LDEBUGFS_SEQ_FOPS_RO(ll_site_stats);
330 static ssize_t max_read_ahead_mb_show(struct kobject *kobj,
331 struct attribute *attr, char *buf)
333 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
336 return scnprintf(buf, PAGE_SIZE, "%lu\n",
337 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages));
340 static ssize_t max_read_ahead_mb_store(struct kobject *kobj,
341 struct attribute *attr,
342 const char *buffer, size_t count)
344 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
346 u64 ra_max_mb, pages_number;
349 rc = sysfs_memparse(buffer, count, &ra_max_mb, "MiB");
353 pages_number = round_up(ra_max_mb, 1024 * 1024) >> PAGE_SHIFT;
354 CDEBUG(D_INFO, "%s: set max_read_ahead_mb=%llu (%llu pages)\n",
355 sbi->ll_fsname, PAGES_TO_MiB(pages_number), pages_number);
356 if (pages_number > cfs_totalram_pages() / 2) {
358 CERROR("%s: cannot set max_read_ahead_mb=%llu > totalram/2=%luMB\n",
359 sbi->ll_fsname, PAGES_TO_MiB(pages_number),
360 PAGES_TO_MiB(cfs_totalram_pages() / 2));
364 spin_lock(&sbi->ll_lock);
365 sbi->ll_ra_info.ra_max_pages = pages_number;
366 spin_unlock(&sbi->ll_lock);
370 LUSTRE_RW_ATTR(max_read_ahead_mb);
372 static ssize_t max_read_ahead_per_file_mb_show(struct kobject *kobj,
373 struct attribute *attr,
376 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
379 return scnprintf(buf, PAGE_SIZE, "%lu\n",
380 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages_per_file));
383 static ssize_t max_read_ahead_per_file_mb_store(struct kobject *kobj,
384 struct attribute *attr,
388 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
390 u64 ra_max_file_mb, pages_number;
393 rc = sysfs_memparse(buffer, count, &ra_max_file_mb, "MiB");
397 pages_number = round_up(ra_max_file_mb, 1024 * 1024) >> PAGE_SHIFT;
398 if (pages_number > sbi->ll_ra_info.ra_max_pages) {
399 CERROR("%s: cannot set max_read_ahead_per_file_mb=%llu > max_read_ahead_mb=%lu\n",
400 sbi->ll_fsname, PAGES_TO_MiB(pages_number),
401 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages));
405 spin_lock(&sbi->ll_lock);
406 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
407 spin_unlock(&sbi->ll_lock);
411 LUSTRE_RW_ATTR(max_read_ahead_per_file_mb);
413 static ssize_t max_read_ahead_whole_mb_show(struct kobject *kobj,
414 struct attribute *attr, char *buf)
416 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
419 return scnprintf(buf, PAGE_SIZE, "%lu\n",
420 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_read_ahead_whole_pages));
423 static ssize_t max_read_ahead_whole_mb_store(struct kobject *kobj,
424 struct attribute *attr,
425 const char *buffer, size_t count)
427 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
429 u64 ra_max_whole_mb, pages_number;
432 rc = sysfs_memparse(buffer, count, &ra_max_whole_mb, "MiB");
436 pages_number = round_up(ra_max_whole_mb, 1024 * 1024) >> PAGE_SHIFT;
437 /* Cap this at the current max readahead window size, the readahead
438 * algorithm does this anyway so it's pointless to set it larger.
440 if (pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
441 CERROR("%s: cannot set max_read_ahead_whole_mb=%llu > max_read_ahead_per_file_mb=%lu\n",
442 sbi->ll_fsname, PAGES_TO_MiB(pages_number),
443 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages_per_file));
448 spin_lock(&sbi->ll_lock);
449 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
450 spin_unlock(&sbi->ll_lock);
454 LUSTRE_RW_ATTR(max_read_ahead_whole_mb);
456 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
458 struct super_block *sb = m->private;
459 struct ll_sb_info *sbi = ll_s2sbi(sb);
460 struct cl_client_cache *cache = sbi->ll_cache;
461 struct ll_ra_info *ra = &sbi->ll_ra_info;
465 mutex_lock(&cache->ccc_max_cache_mb_lock);
466 max_cached_mb = PAGES_TO_MiB(cache->ccc_lru_max);
467 unused_mb = PAGES_TO_MiB(atomic_long_read(&cache->ccc_lru_left));
468 mutex_unlock(&cache->ccc_max_cache_mb_lock);
470 seq_printf(m, "users: %d\n"
471 "max_cached_mb: %ld\n"
474 "reclaim_count: %u\n"
475 "max_read_ahead_mb: %lu\n"
476 "used_read_ahead_mb: %d\n",
477 refcount_read(&cache->ccc_users),
479 max_cached_mb - unused_mb,
481 cache->ccc_lru_shrinkers,
482 PAGES_TO_MiB(ra->ra_max_pages),
483 PAGES_TO_MiB(atomic_read(&ra->ra_cur_pages)));
487 static ssize_t ll_max_cached_mb_seq_write(struct file *file,
488 const char __user *buffer,
489 size_t count, loff_t *off)
491 struct seq_file *m = file->private_data;
492 struct super_block *sb = m->private;
493 struct ll_sb_info *sbi = ll_s2sbi(sb);
494 struct cl_client_cache *cache = sbi->ll_cache;
501 char kernbuf[128], *ptr;
504 if (count >= sizeof(kernbuf))
507 if (copy_from_user(kernbuf, buffer, count))
509 kernbuf[count] = '\0';
511 ptr = lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count);
512 rc = sysfs_memparse(ptr, count, &pages_number, "MiB");
516 pages_number >>= PAGE_SHIFT;
518 if (pages_number < 0 || pages_number > cfs_totalram_pages()) {
519 CERROR("%s: can't set max cache more than %lu MB\n",
521 PAGES_TO_MiB(cfs_totalram_pages()));
524 /* Allow enough cache so clients can make well-formed RPCs */
525 pages_number = max_t(long, pages_number, PTLRPC_MAX_BRW_PAGES);
527 mutex_lock(&cache->ccc_max_cache_mb_lock);
528 diff = pages_number - cache->ccc_lru_max;
530 /* easy - add more LRU slots. */
532 atomic_long_add(diff, &cache->ccc_lru_left);
536 env = cl_env_get(&refcheck);
538 GOTO(out_unlock, rc = PTR_ERR(env));
544 /* reduce LRU budget from free slots. */
546 long lru_left_old, lru_left_new, lru_left_ret;
548 lru_left_old = atomic_long_read(&cache->ccc_lru_left);
549 if (lru_left_old == 0)
552 lru_left_new = lru_left_old > diff ?
553 lru_left_old - diff : 0;
555 atomic_long_cmpxchg(&cache->ccc_lru_left,
558 if (likely(lru_left_old == lru_left_ret)) {
559 diff -= lru_left_old - lru_left_new;
560 nrpages += lru_left_old - lru_left_new;
568 if (sbi->ll_dt_exp == NULL) { /* being initialized */
573 /* Request extra free slots to avoid them all being used
574 * by other processes before this can continue shrinking.
576 tmp = diff + min_t(long, diff, MiB_TO_PAGES(1024));
577 /* difficult - have to ask OSCs to drop LRU slots. */
578 rc = obd_set_info_async(env, sbi->ll_dt_exp,
579 sizeof(KEY_CACHE_LRU_SHRINK),
580 KEY_CACHE_LRU_SHRINK,
581 sizeof(tmp), &tmp, NULL);
585 cl_env_put(env, &refcheck);
589 cache->ccc_lru_max = pages_number;
592 atomic_long_add(nrpages, &cache->ccc_lru_left);
595 mutex_unlock(&cache->ccc_max_cache_mb_lock);
598 LDEBUGFS_SEQ_FOPS(ll_max_cached_mb);
600 static ssize_t checksums_show(struct kobject *kobj, struct attribute *attr,
603 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
606 return scnprintf(buf, PAGE_SIZE, "%u\n",
607 test_bit(LL_SBI_CHECKSUM, sbi->ll_flags));
610 static ssize_t checksums_store(struct kobject *kobj, struct attribute *attr,
611 const char *buffer, size_t count)
613 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
623 rc = kstrtobool(buffer, &val);
627 set_bit(LL_SBI_CHECKSUM, sbi->ll_flags);
629 clear_bit(LL_SBI_CHECKSUM, sbi->ll_flags);
632 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
633 KEY_CHECKSUM, sizeof(tmp), &tmp, NULL);
635 CWARN("Failed to set OSC checksum flags: %d\n", rc);
639 LUSTRE_RW_ATTR(checksums);
641 LUSTRE_ATTR(checksum_pages, 0644, checksums_show, checksums_store);
643 static ssize_t ll_rd_track_id(struct kobject *kobj, char *buf,
644 enum stats_track_type type)
646 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
649 if (sbi->ll_stats_track_type == type)
650 return sprintf(buf, "%d\n", sbi->ll_stats_track_id);
651 else if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
652 return sprintf(buf, "0 (all)\n");
654 return sprintf(buf, "untracked\n");
657 static ssize_t ll_wr_track_id(struct kobject *kobj, const char *buffer,
658 size_t count, enum stats_track_type type)
660 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
665 rc = kstrtoul(buffer, 10, &pid);
669 sbi->ll_stats_track_id = pid;
671 sbi->ll_stats_track_type = STATS_TRACK_ALL;
673 sbi->ll_stats_track_type = type;
674 lprocfs_stats_clear(sbi->ll_stats);
678 static ssize_t stats_track_pid_show(struct kobject *kobj,
679 struct attribute *attr,
682 return ll_rd_track_id(kobj, buf, STATS_TRACK_PID);
685 static ssize_t stats_track_pid_store(struct kobject *kobj,
686 struct attribute *attr,
690 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_PID);
692 LUSTRE_RW_ATTR(stats_track_pid);
694 static ssize_t stats_track_ppid_show(struct kobject *kobj,
695 struct attribute *attr,
698 return ll_rd_track_id(kobj, buf, STATS_TRACK_PPID);
701 static ssize_t stats_track_ppid_store(struct kobject *kobj,
702 struct attribute *attr,
706 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_PPID);
708 LUSTRE_RW_ATTR(stats_track_ppid);
710 static ssize_t stats_track_gid_show(struct kobject *kobj,
711 struct attribute *attr,
714 return ll_rd_track_id(kobj, buf, STATS_TRACK_GID);
717 static ssize_t stats_track_gid_store(struct kobject *kobj,
718 struct attribute *attr,
722 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_GID);
724 LUSTRE_RW_ATTR(stats_track_gid);
726 static ssize_t statahead_running_max_show(struct kobject *kobj,
727 struct attribute *attr,
730 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
733 return scnprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_sa_running_max);
736 static ssize_t statahead_running_max_store(struct kobject *kobj,
737 struct attribute *attr,
741 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
746 rc = kstrtoul(buffer, 0, &val);
750 if (val <= LL_SA_RUNNING_MAX) {
751 sbi->ll_sa_running_max = val;
755 CERROR("Bad statahead_running_max value %lu. Valid values "
756 "are in the range [0, %d]\n", val, LL_SA_RUNNING_MAX);
760 LUSTRE_RW_ATTR(statahead_running_max);
762 static ssize_t statahead_batch_max_show(struct kobject *kobj,
763 struct attribute *attr,
766 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
769 return snprintf(buf, 16, "%u\n", sbi->ll_sa_batch_max);
772 static ssize_t statahead_batch_max_store(struct kobject *kobj,
773 struct attribute *attr,
777 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
782 rc = kstrtoul(buffer, 0, &val);
786 if (val > LL_SA_BATCH_MAX) {
787 CWARN("%s: statahead_batch_max value %lu limited to maximum %d\n",
788 sbi->ll_fsname, val, LL_SA_BATCH_MAX);
789 val = LL_SA_BATCH_MAX;
792 sbi->ll_sa_batch_max = val;
795 LUSTRE_RW_ATTR(statahead_batch_max);
797 static ssize_t statahead_max_show(struct kobject *kobj,
798 struct attribute *attr,
801 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
804 return sprintf(buf, "%u\n", sbi->ll_sa_max);
807 static ssize_t statahead_max_store(struct kobject *kobj,
808 struct attribute *attr,
812 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
817 rc = kstrtoul(buffer, 0, &val);
821 if (val > LL_SA_RPC_MAX) {
822 CWARN("%s: statahead_max value %lu limited to maximum %d\n",
823 sbi->ll_fsname, val, LL_SA_RPC_MAX);
827 sbi->ll_sa_max = val;
830 LUSTRE_RW_ATTR(statahead_max);
832 static ssize_t statahead_agl_show(struct kobject *kobj,
833 struct attribute *attr,
836 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
839 return scnprintf(buf, PAGE_SIZE, "%u\n",
840 test_bit(LL_SBI_AGL_ENABLED, sbi->ll_flags));
843 static ssize_t statahead_agl_store(struct kobject *kobj,
844 struct attribute *attr,
848 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
853 rc = kstrtobool(buffer, &val);
858 set_bit(LL_SBI_AGL_ENABLED, sbi->ll_flags);
860 clear_bit(LL_SBI_AGL_ENABLED, sbi->ll_flags);
864 LUSTRE_RW_ATTR(statahead_agl);
866 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
868 struct super_block *sb = m->private;
869 struct ll_sb_info *sbi = ll_s2sbi(sb);
871 seq_printf(m, "statahead total: %u\n"
872 "statahead wrong: %u\n"
876 atomic_read(&sbi->ll_sa_total),
877 atomic_read(&sbi->ll_sa_wrong),
878 atomic_read(&sbi->ll_agl_total),
879 atomic_read(&sbi->ll_sa_hit_total),
880 atomic_read(&sbi->ll_sa_miss_total));
884 static ssize_t ll_statahead_stats_seq_write(struct file *file,
885 const char __user *buffer,
886 size_t count, loff_t *off)
888 struct seq_file *m = file->private_data;
889 struct super_block *sb = m->private;
890 struct ll_sb_info *sbi = ll_s2sbi(sb);
892 atomic_set(&sbi->ll_sa_total, 0);
893 atomic_set(&sbi->ll_sa_wrong, 0);
894 atomic_set(&sbi->ll_agl_total, 0);
895 atomic_set(&sbi->ll_sa_hit_total, 0);
896 atomic_set(&sbi->ll_sa_miss_total, 0);
900 LDEBUGFS_SEQ_FOPS(ll_statahead_stats);
902 static ssize_t lazystatfs_show(struct kobject *kobj,
903 struct attribute *attr,
906 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
909 return scnprintf(buf, PAGE_SIZE, "%u\n",
910 test_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags));
913 static ssize_t lazystatfs_store(struct kobject *kobj,
914 struct attribute *attr,
918 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
923 rc = kstrtobool(buffer, &val);
928 set_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags);
930 clear_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags);
934 LUSTRE_RW_ATTR(lazystatfs);
936 static ssize_t statfs_max_age_show(struct kobject *kobj, struct attribute *attr,
939 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
942 return scnprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_statfs_max_age);
945 static ssize_t statfs_max_age_store(struct kobject *kobj,
946 struct attribute *attr, const char *buffer,
949 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
954 rc = kstrtouint(buffer, 10, &val);
957 if (val > OBD_STATFS_CACHE_MAX_AGE)
960 sbi->ll_statfs_max_age = val;
964 LUSTRE_RW_ATTR(statfs_max_age);
966 static ssize_t max_easize_show(struct kobject *kobj,
967 struct attribute *attr,
970 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
975 rc = ll_get_max_mdsize(sbi, &ealen);
979 /* Limit xattr size returned to userspace based on kernel maximum */
980 return scnprintf(buf, PAGE_SIZE, "%u\n",
981 ealen > XATTR_SIZE_MAX ? XATTR_SIZE_MAX : ealen);
983 LUSTRE_RO_ATTR(max_easize);
986 * Get default_easize.
988 * \see client_obd::cl_default_mds_easize
990 * \param[in] m seq_file handle
991 * \param[in] v unused for single entry
993 * \retval 0 on success
994 * \retval negative negated errno on failure
996 static ssize_t default_easize_show(struct kobject *kobj,
997 struct attribute *attr,
1000 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1005 rc = ll_get_default_mdsize(sbi, &ealen);
1009 /* Limit xattr size returned to userspace based on kernel maximum */
1010 return scnprintf(buf, PAGE_SIZE, "%u\n",
1011 ealen > XATTR_SIZE_MAX ? XATTR_SIZE_MAX : ealen);
1015 * Set default_easize.
1017 * Range checking on the passed value is handled by
1018 * ll_set_default_mdsize().
1020 * \see client_obd::cl_default_mds_easize
1022 * \param[in] file proc file
1023 * \param[in] buffer string passed from user space
1024 * \param[in] count \a buffer length
1025 * \param[in] off unused for single entry
1027 * \retval positive \a count on success
1028 * \retval negative negated errno on failure
1030 static ssize_t default_easize_store(struct kobject *kobj,
1031 struct attribute *attr,
1035 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1043 rc = kstrtouint(buffer, 10, &val);
1047 rc = ll_set_default_mdsize(sbi, val);
1053 LUSTRE_RW_ATTR(default_easize);
1055 LDEBUGFS_SEQ_FOPS_RO(ll_sbi_flags);
1057 static ssize_t xattr_cache_show(struct kobject *kobj,
1058 struct attribute *attr,
1061 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1064 return sprintf(buf, "%u\n", sbi->ll_xattr_cache_enabled);
1067 static ssize_t xattr_cache_store(struct kobject *kobj,
1068 struct attribute *attr,
1072 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1077 rc = kstrtobool(buffer, &val);
1081 if (val && !test_bit(LL_SBI_XATTR_CACHE, sbi->ll_flags))
1084 sbi->ll_xattr_cache_enabled = val;
1085 sbi->ll_xattr_cache_set = 1;
1089 LUSTRE_RW_ATTR(xattr_cache);
1091 static ssize_t tiny_write_show(struct kobject *kobj,
1092 struct attribute *attr,
1095 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1098 return scnprintf(buf, PAGE_SIZE, "%u\n",
1099 test_bit(LL_SBI_TINY_WRITE, sbi->ll_flags));
1102 static ssize_t tiny_write_store(struct kobject *kobj,
1103 struct attribute *attr,
1107 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1112 rc = kstrtobool(buffer, &val);
1116 spin_lock(&sbi->ll_lock);
1118 set_bit(LL_SBI_TINY_WRITE, sbi->ll_flags);
1120 clear_bit(LL_SBI_TINY_WRITE, sbi->ll_flags);
1121 spin_unlock(&sbi->ll_lock);
1125 LUSTRE_RW_ATTR(tiny_write);
1127 static ssize_t parallel_dio_show(struct kobject *kobj,
1128 struct attribute *attr,
1131 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1134 return snprintf(buf, PAGE_SIZE, "%u\n",
1135 test_bit(LL_SBI_PARALLEL_DIO, sbi->ll_flags));
1138 static ssize_t parallel_dio_store(struct kobject *kobj,
1139 struct attribute *attr,
1143 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1148 rc = kstrtobool(buffer, &val);
1152 spin_lock(&sbi->ll_lock);
1154 set_bit(LL_SBI_PARALLEL_DIO, sbi->ll_flags);
1156 clear_bit(LL_SBI_PARALLEL_DIO, sbi->ll_flags);
1157 spin_unlock(&sbi->ll_lock);
1161 LUSTRE_RW_ATTR(parallel_dio);
1163 static ssize_t max_read_ahead_async_active_show(struct kobject *kobj,
1164 struct attribute *attr,
1167 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1170 return scnprintf(buf, PAGE_SIZE, "%u\n",
1171 sbi->ll_ra_info.ra_async_max_active);
1174 static ssize_t max_read_ahead_async_active_store(struct kobject *kobj,
1175 struct attribute *attr,
1179 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1184 rc = kstrtouint(buffer, 10, &val);
1189 * It doesn't make any sense to make it exceed what
1190 * workqueue could acutally support. This can easily
1191 * over subscripe the cores but Lustre internally
1192 * throttles to avoid those impacts.
1194 if (val > WQ_UNBOUND_MAX_ACTIVE) {
1195 CERROR("%s: cannot set max_read_ahead_async_active=%u larger than %u\n",
1196 sbi->ll_fsname, val, WQ_UNBOUND_MAX_ACTIVE);
1200 spin_lock(&sbi->ll_lock);
1201 sbi->ll_ra_info.ra_async_max_active = val;
1202 spin_unlock(&sbi->ll_lock);
1206 LUSTRE_RW_ATTR(max_read_ahead_async_active);
1208 static ssize_t read_ahead_async_file_threshold_mb_show(struct kobject *kobj,
1209 struct attribute *attr,
1212 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1215 return scnprintf(buf, PAGE_SIZE, "%lu\n", PAGES_TO_MiB(
1216 sbi->ll_ra_info.ra_async_pages_per_file_threshold));
1220 read_ahead_async_file_threshold_mb_store(struct kobject *kobj,
1221 struct attribute *attr,
1222 const char *buffer, size_t count)
1224 unsigned long pages_number;
1225 unsigned long max_ra_per_file;
1226 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1230 rc = kstrtoul(buffer, 10, &pages_number);
1234 pages_number = MiB_TO_PAGES(pages_number);
1235 max_ra_per_file = sbi->ll_ra_info.ra_max_pages_per_file;
1236 if (pages_number < 0 || pages_number > max_ra_per_file) {
1237 CERROR("%s: can't set read_ahead_async_file_threshold_mb=%lu > "
1238 "max_read_readahead_per_file_mb=%lu\n", sbi->ll_fsname,
1239 PAGES_TO_MiB(pages_number),
1240 PAGES_TO_MiB(max_ra_per_file));
1243 sbi->ll_ra_info.ra_async_pages_per_file_threshold = pages_number;
1247 LUSTRE_RW_ATTR(read_ahead_async_file_threshold_mb);
1249 static ssize_t read_ahead_range_kb_show(struct kobject *kobj,
1250 struct attribute *attr,char *buf)
1252 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1255 return snprintf(buf, PAGE_SIZE, "%lu\n",
1256 sbi->ll_ra_info.ra_range_pages << (PAGE_SHIFT - 10));
1260 read_ahead_range_kb_store(struct kobject *kobj,
1261 struct attribute *attr,
1262 const char *buffer, size_t count)
1264 unsigned long pages_number;
1265 unsigned long max_ra_per_file;
1267 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1271 rc = sysfs_memparse(buffer, count, &val, "KiB");
1275 pages_number = val >> PAGE_SHIFT;
1276 /* Disable mmap range read */
1277 if (pages_number == 0)
1280 max_ra_per_file = sbi->ll_ra_info.ra_max_pages_per_file;
1281 if (pages_number > max_ra_per_file ||
1282 pages_number < RA_MIN_MMAP_RANGE_PAGES)
1286 spin_lock(&sbi->ll_lock);
1287 sbi->ll_ra_info.ra_range_pages = pages_number;
1288 spin_unlock(&sbi->ll_lock);
1292 LUSTRE_RW_ATTR(read_ahead_range_kb);
1294 static ssize_t fast_read_show(struct kobject *kobj,
1295 struct attribute *attr,
1298 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1301 return scnprintf(buf, PAGE_SIZE, "%u\n",
1302 test_bit(LL_SBI_FAST_READ, sbi->ll_flags));
1305 static ssize_t fast_read_store(struct kobject *kobj,
1306 struct attribute *attr,
1310 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1315 rc = kstrtobool(buffer, &val);
1319 spin_lock(&sbi->ll_lock);
1321 set_bit(LL_SBI_FAST_READ, sbi->ll_flags);
1323 clear_bit(LL_SBI_FAST_READ, sbi->ll_flags);
1324 spin_unlock(&sbi->ll_lock);
1328 LUSTRE_RW_ATTR(fast_read);
1330 static ssize_t file_heat_show(struct kobject *kobj,
1331 struct attribute *attr,
1334 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1337 return scnprintf(buf, PAGE_SIZE, "%u\n",
1338 test_bit(LL_SBI_FILE_HEAT, sbi->ll_flags));
1341 static ssize_t file_heat_store(struct kobject *kobj,
1342 struct attribute *attr,
1346 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1351 rc = kstrtobool(buffer, &val);
1355 spin_lock(&sbi->ll_lock);
1357 set_bit(LL_SBI_FILE_HEAT, sbi->ll_flags);
1359 clear_bit(LL_SBI_FILE_HEAT, sbi->ll_flags);
1360 spin_unlock(&sbi->ll_lock);
1364 LUSTRE_RW_ATTR(file_heat);
1366 static ssize_t heat_decay_percentage_show(struct kobject *kobj,
1367 struct attribute *attr,
1370 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1373 return scnprintf(buf, PAGE_SIZE, "%u\n",
1374 (sbi->ll_heat_decay_weight * 100 + 128) / 256);
1377 static ssize_t heat_decay_percentage_store(struct kobject *kobj,
1378 struct attribute *attr,
1382 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1387 rc = kstrtoul(buffer, 10, &val);
1391 if (val < 0 || val > 100)
1394 sbi->ll_heat_decay_weight = (val * 256 + 50) / 100;
1398 LUSTRE_RW_ATTR(heat_decay_percentage);
1400 static ssize_t heat_period_second_show(struct kobject *kobj,
1401 struct attribute *attr,
1404 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1407 return scnprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_heat_period_second);
1410 static ssize_t heat_period_second_store(struct kobject *kobj,
1411 struct attribute *attr,
1415 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1420 rc = kstrtoul(buffer, 10, &val);
1427 sbi->ll_heat_period_second = val;
1431 LUSTRE_RW_ATTR(heat_period_second);
1433 static ssize_t opencache_threshold_count_show(struct kobject *kobj,
1434 struct attribute *attr,
1437 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1440 if (sbi->ll_oc_thrsh_count)
1441 return snprintf(buf, PAGE_SIZE, "%u\n",
1442 sbi->ll_oc_thrsh_count);
1444 return snprintf(buf, PAGE_SIZE, "off\n");
1447 static ssize_t opencache_threshold_count_store(struct kobject *kobj,
1448 struct attribute *attr,
1452 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1457 rc = kstrtouint(buffer, 10, &val);
1460 /* also accept "off" to disable and "on" to always cache */
1461 rc = kstrtobool(buffer, &enable);
1466 sbi->ll_oc_thrsh_count = val;
1470 LUSTRE_RW_ATTR(opencache_threshold_count);
1472 static ssize_t opencache_threshold_ms_show(struct kobject *kobj,
1473 struct attribute *attr,
1476 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1479 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_oc_thrsh_ms);
1482 static ssize_t opencache_threshold_ms_store(struct kobject *kobj,
1483 struct attribute *attr,
1487 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1492 rc = kstrtouint(buffer, 10, &val);
1496 sbi->ll_oc_thrsh_ms = val;
1500 LUSTRE_RW_ATTR(opencache_threshold_ms);
1502 static ssize_t opencache_max_ms_show(struct kobject *kobj,
1503 struct attribute *attr,
1506 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1509 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_oc_max_ms);
1512 static ssize_t opencache_max_ms_store(struct kobject *kobj,
1513 struct attribute *attr,
1517 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1522 rc = kstrtouint(buffer, 10, &val);
1526 sbi->ll_oc_max_ms = val;
1530 LUSTRE_RW_ATTR(opencache_max_ms);
1532 static ssize_t inode_cache_show(struct kobject *kobj,
1533 struct attribute *attr,
1536 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1539 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_inode_cache_enabled);
1542 static ssize_t inode_cache_store(struct kobject *kobj,
1543 struct attribute *attr,
1547 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1552 rc = kstrtobool(buffer, &val);
1556 sbi->ll_inode_cache_enabled = val;
1560 LUSTRE_RW_ATTR(inode_cache);
1562 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
1564 struct super_block *sb = m->private;
1565 struct ll_sb_info *sbi = ll_s2sbi(sb);
1566 struct cl_client_cache *cache = sbi->ll_cache;
1570 pages = atomic_long_read(&cache->ccc_unstable_nr);
1571 mb = (pages * PAGE_SIZE) >> 20;
1573 seq_printf(m, "unstable_check: %8d\n"
1574 "unstable_pages: %12ld\n"
1575 "unstable_mb: %8d\n",
1576 cache->ccc_unstable_check, pages, mb);
1580 static ssize_t ll_unstable_stats_seq_write(struct file *file,
1581 const char __user *buffer,
1582 size_t count, loff_t *unused)
1584 struct seq_file *seq = file->private_data;
1585 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
1592 if (count >= sizeof(kernbuf))
1595 if (copy_from_user(kernbuf, buffer, count))
1599 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
1601 rc = kstrtobool_from_user(buffer, count, &val);
1605 /* borrow lru lock to set the value */
1606 spin_lock(&sbi->ll_cache->ccc_lru_lock);
1607 sbi->ll_cache->ccc_unstable_check = val;
1608 spin_unlock(&sbi->ll_cache->ccc_lru_lock);
1613 LDEBUGFS_SEQ_FOPS(ll_unstable_stats);
1615 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
1617 struct super_block *sb = m->private;
1618 struct ll_sb_info *sbi = ll_s2sbi(sb);
1619 struct root_squash_info *squash = &sbi->ll_squash;
1621 seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
1625 static ssize_t ll_root_squash_seq_write(struct file *file,
1626 const char __user *buffer,
1627 size_t count, loff_t *off)
1629 struct seq_file *m = file->private_data;
1630 struct super_block *sb = m->private;
1631 struct ll_sb_info *sbi = ll_s2sbi(sb);
1632 struct root_squash_info *squash = &sbi->ll_squash;
1634 return lprocfs_wr_root_squash(buffer, count, squash, sbi->ll_fsname);
1637 LDEBUGFS_SEQ_FOPS(ll_root_squash);
1639 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
1641 struct super_block *sb = m->private;
1642 struct ll_sb_info *sbi = ll_s2sbi(sb);
1643 struct root_squash_info *squash = &sbi->ll_squash;
1646 spin_lock(&squash->rsi_lock);
1647 if (!list_empty(&squash->rsi_nosquash_nids)) {
1648 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
1649 &squash->rsi_nosquash_nids);
1653 seq_puts(m, "NONE\n");
1655 spin_unlock(&squash->rsi_lock);
1660 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
1661 const char __user *buffer,
1662 size_t count, loff_t *off)
1664 struct seq_file *m = file->private_data;
1665 struct super_block *sb = m->private;
1666 struct ll_sb_info *sbi = ll_s2sbi(sb);
1667 struct root_squash_info *squash = &sbi->ll_squash;
1670 rc = lprocfs_wr_nosquash_nids(buffer, count, squash, sbi->ll_fsname);
1674 ll_compute_rootsquash_state(sbi);
1679 LDEBUGFS_SEQ_FOPS(ll_nosquash_nids);
1681 #if defined(CONFIG_LL_ENCRYPTION)
1682 static ssize_t enable_filename_encryption_show(struct kobject *kobj,
1683 struct attribute *attr,
1686 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1688 struct lustre_sb_info *lsi = sbi->lsi;
1690 return snprintf(buffer, PAGE_SIZE, "%u\n",
1691 lsi->lsi_flags & LSI_FILENAME_ENC ? 1 : 0);
1694 static ssize_t enable_filename_encryption_store(struct kobject *kobj,
1695 struct attribute *attr,
1699 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1701 struct lustre_sb_info *lsi = sbi->lsi;
1705 rc = kstrtobool(buffer, &val);
1710 if (!ll_sbi_has_name_encrypt(sbi)) {
1711 /* server does not support name encryption,
1712 * so force it to NULL on client
1714 CDEBUG(D_SEC, "%s: server does not support name encryption\n",
1716 lsi->lsi_flags &= ~LSI_FILENAME_ENC;
1720 lsi->lsi_flags |= LSI_FILENAME_ENC;
1722 lsi->lsi_flags &= ~LSI_FILENAME_ENC;
1728 LUSTRE_RW_ATTR(enable_filename_encryption);
1729 #endif /* CONFIG_LL_ENCRYPTION */
1731 #if defined(CONFIG_LL_ENCRYPTION) || defined(HAVE_LUSTRE_CRYPTO)
1732 static ssize_t filename_enc_use_old_base64_show(struct kobject *kobj,
1733 struct attribute *attr,
1736 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1738 struct lustre_sb_info *lsi = sbi->lsi;
1740 return snprintf(buffer, PAGE_SIZE, "%u\n",
1741 lsi->lsi_flags & LSI_FILENAME_ENC_B64_OLD_CLI ? 1 : 0);
1744 static ssize_t filename_enc_use_old_base64_store(struct kobject *kobj,
1745 struct attribute *attr,
1749 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1751 struct lustre_sb_info *lsi = sbi->lsi;
1755 rc = kstrtobool(buffer, &val);
1760 if (!ll_sbi_has_name_encrypt(sbi)) {
1761 /* server does not support name encryption,
1762 * so force it to NULL on client
1765 "%s: server does not support name encryption\n",
1767 lsi->lsi_flags &= ~LSI_FILENAME_ENC_B64_OLD_CLI;
1771 lsi->lsi_flags |= LSI_FILENAME_ENC_B64_OLD_CLI;
1773 lsi->lsi_flags &= ~LSI_FILENAME_ENC_B64_OLD_CLI;
1779 LUSTRE_RW_ATTR(filename_enc_use_old_base64);
1780 #endif /* CONFIG_LL_ENCRYPTION || HAVE_LUSTRE_CRYPTO */
1782 static int ll_pcc_seq_show(struct seq_file *m, void *v)
1784 struct super_block *sb = m->private;
1785 struct ll_sb_info *sbi = ll_s2sbi(sb);
1787 return pcc_super_dump(&sbi->ll_pcc_super, m);
1790 static ssize_t ll_pcc_seq_write(struct file *file, const char __user *buffer,
1791 size_t count, loff_t *off)
1793 struct seq_file *m = file->private_data;
1794 struct super_block *sb = m->private;
1795 struct ll_sb_info *sbi = ll_s2sbi(sb);
1799 if (count >= LPROCFS_WR_PCC_MAX_CMD)
1802 if (!(exp_connect_flags2(sbi->ll_md_exp) & OBD_CONNECT2_PCC))
1805 OBD_ALLOC(kernbuf, count + 1);
1806 if (kernbuf == NULL)
1809 if (copy_from_user(kernbuf, buffer, count))
1810 GOTO(out_free_kernbuff, rc = -EFAULT);
1812 rc = pcc_cmd_handle(kernbuf, count, &sbi->ll_pcc_super);
1814 OBD_FREE(kernbuf, count + 1);
1815 return rc ? rc : count;
1817 LDEBUGFS_SEQ_FOPS(ll_pcc);
1819 struct ldebugfs_vars lprocfs_llite_obd_vars[] = {
1821 .fops = &ll_site_stats_fops },
1822 { .name = "max_cached_mb",
1823 .fops = &ll_max_cached_mb_fops },
1824 { .name = "statahead_stats",
1825 .fops = &ll_statahead_stats_fops },
1826 { .name = "unstable_stats",
1827 .fops = &ll_unstable_stats_fops },
1828 { .name = "sbi_flags",
1829 .fops = &ll_sbi_flags_fops },
1830 { .name = "root_squash",
1831 .fops = &ll_root_squash_fops },
1832 { .name = "nosquash_nids",
1833 .fops = &ll_nosquash_nids_fops },
1835 .fops = &ll_pcc_fops, },
1839 #define MAX_STRING_SIZE 128
1841 static struct attribute *llite_attrs[] = {
1842 &lustre_attr_blocksize.attr,
1843 &lustre_attr_stat_blocksize.attr,
1844 &lustre_attr_kbytestotal.attr,
1845 &lustre_attr_kbytesfree.attr,
1846 &lustre_attr_kbytesavail.attr,
1847 &lustre_attr_filestotal.attr,
1848 &lustre_attr_filesfree.attr,
1849 &lustre_attr_client_type.attr,
1850 &lustre_attr_foreign_symlink_enable.attr,
1851 &lustre_attr_foreign_symlink_prefix.attr,
1852 &lustre_attr_foreign_symlink_upcall.attr,
1853 &lustre_attr_foreign_symlink_upcall_info.attr,
1854 &lustre_attr_fstype.attr,
1855 &lustre_attr_uuid.attr,
1856 &lustre_attr_checksums.attr,
1857 &lustre_attr_checksum_pages.attr,
1858 &lustre_attr_max_read_ahead_mb.attr,
1859 &lustre_attr_max_read_ahead_per_file_mb.attr,
1860 &lustre_attr_max_read_ahead_whole_mb.attr,
1861 &lustre_attr_max_read_ahead_async_active.attr,
1862 &lustre_attr_read_ahead_async_file_threshold_mb.attr,
1863 &lustre_attr_read_ahead_range_kb.attr,
1864 &lustre_attr_stats_track_pid.attr,
1865 &lustre_attr_stats_track_ppid.attr,
1866 &lustre_attr_stats_track_gid.attr,
1867 &lustre_attr_statahead_running_max.attr,
1868 &lustre_attr_statahead_batch_max.attr,
1869 &lustre_attr_statahead_max.attr,
1870 &lustre_attr_statahead_agl.attr,
1871 &lustre_attr_lazystatfs.attr,
1872 &lustre_attr_statfs_max_age.attr,
1873 &lustre_attr_max_easize.attr,
1874 &lustre_attr_default_easize.attr,
1875 &lustre_attr_xattr_cache.attr,
1876 &lustre_attr_fast_read.attr,
1877 &lustre_attr_tiny_write.attr,
1878 &lustre_attr_parallel_dio.attr,
1879 &lustre_attr_file_heat.attr,
1880 &lustre_attr_heat_decay_percentage.attr,
1881 &lustre_attr_heat_period_second.attr,
1882 &lustre_attr_opencache_threshold_count.attr,
1883 &lustre_attr_opencache_threshold_ms.attr,
1884 &lustre_attr_opencache_max_ms.attr,
1885 &lustre_attr_inode_cache.attr,
1886 #ifdef CONFIG_LL_ENCRYPTION
1887 &lustre_attr_enable_filename_encryption.attr,
1889 #if defined(CONFIG_LL_ENCRYPTION) || defined(HAVE_LUSTRE_CRYPTO)
1890 &lustre_attr_filename_enc_use_old_base64.attr,
1895 KOBJ_ATTRIBUTE_GROUPS(llite); /* creates llite_groups */
1897 static void sbi_kobj_release(struct kobject *kobj)
1899 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1901 complete(&sbi->ll_kobj_unregister);
1904 static struct kobj_type sbi_ktype = {
1905 .default_groups = KOBJ_ATTR_GROUPS(llite),
1906 .sysfs_ops = &lustre_sysfs_ops,
1907 .release = sbi_kobj_release,
1910 static const struct llite_file_opcode {
1912 enum lprocfs_counter_config lfo_config;
1913 const char *lfo_opname;
1914 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
1915 /* file operation */
1916 { LPROC_LL_READ_BYTES, LPROCFS_TYPE_BYTES_FULL, "read_bytes" },
1917 { LPROC_LL_WRITE_BYTES, LPROCFS_TYPE_BYTES_FULL, "write_bytes" },
1918 { LPROC_LL_READ, LPROCFS_TYPE_LATENCY, "read" },
1919 { LPROC_LL_WRITE, LPROCFS_TYPE_LATENCY, "write" },
1920 { LPROC_LL_IOCTL, LPROCFS_TYPE_REQS, "ioctl" },
1921 { LPROC_LL_OPEN, LPROCFS_TYPE_LATENCY, "open" },
1922 { LPROC_LL_RELEASE, LPROCFS_TYPE_LATENCY, "close" },
1923 { LPROC_LL_MMAP, LPROCFS_TYPE_LATENCY, "mmap" },
1924 { LPROC_LL_FAULT, LPROCFS_TYPE_LATENCY, "page_fault" },
1925 { LPROC_LL_MKWRITE, LPROCFS_TYPE_LATENCY, "page_mkwrite" },
1926 { LPROC_LL_LLSEEK, LPROCFS_TYPE_LATENCY, "seek" },
1927 { LPROC_LL_FSYNC, LPROCFS_TYPE_LATENCY, "fsync" },
1928 { LPROC_LL_READDIR, LPROCFS_TYPE_LATENCY, "readdir" },
1929 { LPROC_LL_INODE_OCOUNT, LPROCFS_TYPE_REQS | LPROCFS_CNTR_AVGMINMAX |
1930 LPROCFS_CNTR_STDDEV, "opencount" },
1931 { LPROC_LL_INODE_OPCLTM,LPROCFS_TYPE_LATENCY, "openclosetime" },
1932 /* inode operation */
1933 { LPROC_LL_SETATTR, LPROCFS_TYPE_LATENCY, "setattr" },
1934 { LPROC_LL_TRUNC, LPROCFS_TYPE_LATENCY, "truncate" },
1935 { LPROC_LL_FLOCK, LPROCFS_TYPE_LATENCY, "flock" },
1936 { LPROC_LL_GETATTR, LPROCFS_TYPE_LATENCY, "getattr" },
1937 { LPROC_LL_FALLOCATE, LPROCFS_TYPE_LATENCY, "fallocate"},
1938 /* dir inode operation */
1939 { LPROC_LL_CREATE, LPROCFS_TYPE_LATENCY, "create" },
1940 { LPROC_LL_LINK, LPROCFS_TYPE_LATENCY, "link" },
1941 { LPROC_LL_UNLINK, LPROCFS_TYPE_LATENCY, "unlink" },
1942 { LPROC_LL_SYMLINK, LPROCFS_TYPE_LATENCY, "symlink" },
1943 { LPROC_LL_MKDIR, LPROCFS_TYPE_LATENCY, "mkdir" },
1944 { LPROC_LL_RMDIR, LPROCFS_TYPE_LATENCY, "rmdir" },
1945 { LPROC_LL_MKNOD, LPROCFS_TYPE_LATENCY, "mknod" },
1946 { LPROC_LL_RENAME, LPROCFS_TYPE_LATENCY, "rename" },
1947 /* special inode operation */
1948 { LPROC_LL_STATFS, LPROCFS_TYPE_LATENCY, "statfs" },
1949 { LPROC_LL_SETXATTR, LPROCFS_TYPE_LATENCY, "setxattr" },
1950 { LPROC_LL_GETXATTR, LPROCFS_TYPE_LATENCY, "getxattr" },
1951 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REQS, "getxattr_hits" },
1952 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_LATENCY, "listxattr" },
1953 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_LATENCY, "removexattr" },
1954 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_LATENCY, "inode_permission" },
1957 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, long count)
1962 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
1963 lprocfs_counter_add(sbi->ll_stats, op, count);
1964 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
1965 sbi->ll_stats_track_id == current->pid)
1966 lprocfs_counter_add(sbi->ll_stats, op, count);
1967 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
1968 sbi->ll_stats_track_id == current->real_parent->pid)
1969 lprocfs_counter_add(sbi->ll_stats, op, count);
1970 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
1971 sbi->ll_stats_track_id ==
1972 from_kgid(&init_user_ns, current_gid()))
1973 lprocfs_counter_add(sbi->ll_stats, op, count);
1975 EXPORT_SYMBOL(ll_stats_ops_tally);
1977 static const char *const ra_stat_string[] = {
1978 [RA_STAT_HIT] = "hits",
1979 [RA_STAT_MISS] = "misses",
1980 [RA_STAT_DISTANT_READPAGE] = "readpage_not_consecutive",
1981 [RA_STAT_MISS_IN_WINDOW] = "miss_inside_window",
1982 [RA_STAT_FAILED_GRAB_PAGE] = "failed_grab_cache_page",
1983 [RA_STAT_FAILED_MATCH] = "failed_lock_match",
1984 [RA_STAT_DISCARDED] = "read_but_discarded",
1985 [RA_STAT_ZERO_LEN] = "zero_length_file",
1986 [RA_STAT_ZERO_WINDOW] = "zero_size_window",
1987 [RA_STAT_EOF] = "readahead_to_eof",
1988 [RA_STAT_MAX_IN_FLIGHT] = "hit_max_readahead_issue",
1989 [RA_STAT_WRONG_GRAB_PAGE] = "wrong_page_from_grab_cache_page",
1990 [RA_STAT_FAILED_REACH_END] = "failed_to_reach_end",
1991 [RA_STAT_ASYNC] = "async_readahead",
1992 [RA_STAT_FAILED_FAST_READ] = "failed_to_fast_read",
1993 [RA_STAT_MMAP_RANGE_READ] = "mmap_range_read",
1994 [RA_STAT_READAHEAD_PAGES] = "readahead_pages"
1997 int ll_debugfs_register_super(struct super_block *sb, const char *name)
1999 struct lustre_sb_info *lsi = s2lsi(sb);
2000 struct ll_sb_info *sbi = ll_s2sbi(sb);
2006 if (IS_ERR_OR_NULL(llite_root))
2009 sbi->ll_debugfs_entry = debugfs_create_dir(name, llite_root);
2010 ldebugfs_add_vars(sbi->ll_debugfs_entry, lprocfs_llite_obd_vars, sb);
2012 debugfs_create_file("dump_page_cache", 0444, sbi->ll_debugfs_entry, sbi,
2013 &vvp_dump_pgcache_file_ops);
2015 debugfs_create_file("extents_stats", 0644, sbi->ll_debugfs_entry, sbi,
2016 &ll_rw_extents_stats_fops);
2018 debugfs_create_file("extents_stats_per_process", 0644,
2019 sbi->ll_debugfs_entry, sbi,
2020 &ll_rw_extents_stats_pp_fops);
2022 debugfs_create_file("offset_stats", 0644, sbi->ll_debugfs_entry, sbi,
2023 &ll_rw_offset_stats_fops);
2025 /* File operations stats */
2026 sbi->ll_stats = lprocfs_stats_alloc(LPROC_LL_FILE_OPCODES,
2027 LPROCFS_STATS_FLAG_NONE);
2028 if (sbi->ll_stats == NULL)
2029 GOTO(out_debugfs, err = -ENOMEM);
2031 /* do counter init */
2032 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++)
2033 lprocfs_counter_init(sbi->ll_stats,
2034 llite_opcode_table[id].lfo_opcode,
2035 llite_opcode_table[id].lfo_config,
2036 llite_opcode_table[id].lfo_opname);
2038 debugfs_create_file("stats", 0644, sbi->ll_debugfs_entry,
2039 sbi->ll_stats, &ldebugfs_stats_seq_fops);
2041 sbi->ll_ra_stats = lprocfs_stats_alloc(ARRAY_SIZE(ra_stat_string),
2042 LPROCFS_STATS_FLAG_NONE);
2043 if (sbi->ll_ra_stats == NULL)
2044 GOTO(out_stats, err = -ENOMEM);
2046 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++) {
2047 if (id == RA_STAT_READAHEAD_PAGES)
2048 lprocfs_counter_init(sbi->ll_ra_stats, id,
2049 LPROCFS_TYPE_PAGES |
2050 LPROCFS_CNTR_AVGMINMAX,
2051 ra_stat_string[id]);
2053 lprocfs_counter_init(sbi->ll_ra_stats, id,
2055 ra_stat_string[id]);
2058 debugfs_create_file("read_ahead_stats", 0644, sbi->ll_debugfs_entry,
2059 sbi->ll_ra_stats, &ldebugfs_stats_seq_fops);
2062 /* Yes we also register sysfs mount kset here as well */
2063 sbi->ll_kset.kobj.parent = llite_kobj;
2064 sbi->ll_kset.kobj.ktype = &sbi_ktype;
2065 init_completion(&sbi->ll_kobj_unregister);
2066 err = kobject_set_name(&sbi->ll_kset.kobj, "%s", name);
2068 GOTO(out_ra_stats, err);
2070 err = kset_register(&sbi->ll_kset);
2072 GOTO(out_ra_stats, err);
2074 lsi->lsi_kobj = kobject_get(&sbi->ll_kset.kobj);
2078 lprocfs_stats_free(&sbi->ll_ra_stats);
2080 lprocfs_stats_free(&sbi->ll_stats);
2082 debugfs_remove_recursive(sbi->ll_debugfs_entry);
2087 void ll_debugfs_unregister_super(struct super_block *sb)
2089 struct lustre_sb_info *lsi = s2lsi(sb);
2090 struct ll_sb_info *sbi = ll_s2sbi(sb);
2092 debugfs_remove_recursive(sbi->ll_debugfs_entry);
2095 sysfs_remove_link(&sbi->ll_kset.kobj,
2096 sbi->ll_dt_obd->obd_type->typ_name);
2099 sysfs_remove_link(&sbi->ll_kset.kobj,
2100 sbi->ll_md_obd->obd_type->typ_name);
2102 kobject_put(lsi->lsi_kobj);
2104 kset_unregister(&sbi->ll_kset);
2105 wait_for_completion(&sbi->ll_kobj_unregister);
2107 lprocfs_stats_free(&sbi->ll_ra_stats);
2108 lprocfs_stats_free(&sbi->ll_stats);
2110 #undef MAX_STRING_SIZE
2112 static void ll_display_extents_info(struct ll_rw_extents_info *rw_extents,
2113 struct seq_file *seq, int which)
2115 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
2116 unsigned long start, end, r, w;
2117 char *unitp = "KMGTPEZY";
2119 struct per_process_info *pp_info;
2121 pp_info = &rw_extents->pp_extents[which];
2126 for (i = 0; i < LL_HIST_MAX; i++) {
2127 read_tot += pp_info->pp_r_hist.oh_buckets[i];
2128 write_tot += pp_info->pp_w_hist.oh_buckets[i];
2131 for (i = 0; i < LL_HIST_MAX; i++) {
2132 r = pp_info->pp_r_hist.oh_buckets[i];
2133 w = pp_info->pp_w_hist.oh_buckets[i];
2136 end = 1 << (i + LL_HIST_START - units);
2137 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4u %4u | "
2138 "%14lu %4u %4u\n", start, *unitp, end, *unitp,
2139 (i == LL_HIST_MAX - 1) ? '+' : ' ',
2140 r, pct(r, read_tot), pct(read_cum, read_tot),
2141 w, pct(w, write_tot), pct(write_cum, write_tot));
2143 if (start == (1 << 10)) {
2148 if (read_cum == read_tot && write_cum == write_tot)
2153 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
2155 struct ll_sb_info *sbi = seq->private;
2156 struct ll_rw_extents_info *rw_extents = sbi->ll_rw_extents_info;
2159 if (!sbi->ll_rw_stats_on || !rw_extents) {
2160 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
2164 spin_lock(&sbi->ll_pp_extent_lock);
2165 lprocfs_stats_header(seq, ktime_get_real(), rw_extents->pp_init, 25,
2167 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
2168 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
2169 "extents", "calls", "%", "cum%", "calls", "%", "cum%");
2171 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
2172 if (rw_extents->pp_extents[k].pid != 0) {
2173 seq_printf(seq, "\nPID: %d\n",
2174 rw_extents->pp_extents[k].pid);
2175 ll_display_extents_info(rw_extents, seq, k);
2178 spin_unlock(&sbi->ll_pp_extent_lock);
2182 static int alloc_rw_stats_info(struct ll_sb_info *sbi)
2184 struct ll_rw_extents_info *rw_extents;
2185 struct ll_rw_process_info *offset;
2186 struct ll_rw_process_info *process;
2189 OBD_ALLOC(rw_extents, sizeof(*rw_extents));
2193 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
2194 spin_lock_init(&rw_extents->pp_extents[i].pp_r_hist.oh_lock);
2195 spin_lock_init(&rw_extents->pp_extents[i].pp_w_hist.oh_lock);
2197 rw_extents->pp_init = ktime_get_real();
2199 spin_lock(&sbi->ll_pp_extent_lock);
2200 if (!sbi->ll_rw_extents_info)
2201 sbi->ll_rw_extents_info = rw_extents;
2202 spin_unlock(&sbi->ll_pp_extent_lock);
2203 /* another writer allocated the struct before we got the lock */
2204 if (sbi->ll_rw_extents_info != rw_extents)
2205 OBD_FREE(rw_extents, sizeof(*rw_extents));
2207 OBD_ALLOC(process, sizeof(*process) * LL_PROCESS_HIST_MAX);
2209 GOTO(out, rc = -ENOMEM);
2210 OBD_ALLOC(offset, sizeof(*offset) * LL_OFFSET_HIST_MAX);
2212 GOTO(out_free, rc = -ENOMEM);
2214 spin_lock(&sbi->ll_process_lock);
2215 if (!sbi->ll_rw_process_info)
2216 sbi->ll_rw_process_info = process;
2217 if (!sbi->ll_rw_offset_info)
2218 sbi->ll_rw_offset_info = offset;
2219 spin_unlock(&sbi->ll_process_lock);
2220 sbi->ll_process_stats_init = ktime_get_real();
2222 /* another writer allocated the structs before we got the lock */
2223 if (sbi->ll_rw_offset_info != offset)
2224 OBD_FREE(offset, sizeof(*offset) * LL_OFFSET_HIST_MAX);
2225 if (sbi->ll_rw_process_info != process) {
2227 OBD_FREE(process, sizeof(*process) * LL_PROCESS_HIST_MAX);
2234 void ll_free_rw_stats_info(struct ll_sb_info *sbi)
2236 if (sbi->ll_rw_extents_info) {
2237 OBD_FREE(sbi->ll_rw_extents_info,
2238 sizeof(*sbi->ll_rw_extents_info));
2239 sbi->ll_rw_extents_info = NULL;
2241 if (sbi->ll_rw_offset_info) {
2242 OBD_FREE(sbi->ll_rw_offset_info,
2243 sizeof(*sbi->ll_rw_offset_info) * LL_OFFSET_HIST_MAX);
2244 sbi->ll_rw_offset_info = NULL;
2246 if (sbi->ll_rw_process_info) {
2247 OBD_FREE(sbi->ll_rw_process_info,
2248 sizeof(*sbi->ll_rw_process_info) * LL_PROCESS_HIST_MAX);
2249 sbi->ll_rw_process_info = NULL;
2253 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
2254 const char __user *buf,
2255 size_t len, loff_t *off)
2257 struct seq_file *seq = file->private_data;
2258 struct ll_sb_info *sbi = seq->private;
2259 struct ll_rw_extents_info *rw_extents;
2266 value = ll_stats_pid_write(buf, len);
2269 sbi->ll_rw_stats_on = 0;
2271 if (!sbi->ll_rw_extents_info) {
2272 int rc = alloc_rw_stats_info(sbi);
2277 sbi->ll_rw_stats_on = 1;
2281 spin_lock(&sbi->ll_pp_extent_lock);
2282 rw_extents = sbi->ll_rw_extents_info;
2284 rw_extents->pp_init = ktime_get_real();
2285 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
2286 rw_extents->pp_extents[i].pid = 0;
2287 lprocfs_oh_clear(&rw_extents->pp_extents[i].pp_r_hist);
2288 lprocfs_oh_clear(&rw_extents->pp_extents[i].pp_w_hist);
2291 spin_unlock(&sbi->ll_pp_extent_lock);
2296 LDEBUGFS_SEQ_FOPS(ll_rw_extents_stats_pp);
2298 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
2300 struct ll_sb_info *sbi = seq->private;
2301 struct ll_rw_extents_info *rw_extents = sbi->ll_rw_extents_info;
2303 if (!sbi->ll_rw_stats_on || !rw_extents) {
2304 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
2308 spin_lock(&sbi->ll_lock);
2309 lprocfs_stats_header(seq, ktime_get_real(), rw_extents->pp_init, 25,
2312 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
2313 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
2314 "extents", "calls", "%", "cum%",
2315 "calls", "%", "cum%");
2317 ll_display_extents_info(rw_extents, seq, LL_PROCESS_HIST_MAX);
2318 spin_unlock(&sbi->ll_lock);
2323 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
2324 const char __user *buf,
2325 size_t len, loff_t *off)
2327 struct seq_file *seq = file->private_data;
2328 struct ll_sb_info *sbi = seq->private;
2329 struct ll_rw_extents_info *rw_extents;
2336 value = ll_stats_pid_write(buf, len);
2339 sbi->ll_rw_stats_on = 0;
2341 if (!sbi->ll_rw_extents_info) {
2342 int rc = alloc_rw_stats_info(sbi);
2347 sbi->ll_rw_stats_on = 1;
2350 spin_lock(&sbi->ll_pp_extent_lock);
2351 rw_extents = sbi->ll_rw_extents_info;
2353 rw_extents->pp_init = ktime_get_real();
2354 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
2355 rw_extents->pp_extents[i].pid = 0;
2356 lprocfs_oh_clear(&rw_extents->pp_extents[i].pp_r_hist);
2357 lprocfs_oh_clear(&rw_extents->pp_extents[i].pp_w_hist);
2360 spin_unlock(&sbi->ll_pp_extent_lock);
2365 LDEBUGFS_SEQ_FOPS(ll_rw_extents_stats);
2367 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
2368 struct ll_file_data *file, loff_t pos,
2369 size_t count, int rw)
2372 struct ll_rw_process_info *process;
2373 struct ll_rw_process_info *offset;
2374 int *off_count = &sbi->ll_rw_offset_entry_count;
2375 int *process_count = &sbi->ll_offset_process_count;
2376 struct ll_rw_extents_info *rw_extents;
2378 if (!sbi->ll_rw_stats_on)
2381 spin_lock(&sbi->ll_pp_extent_lock);
2382 rw_extents = sbi->ll_rw_extents_info;
2384 spin_unlock(&sbi->ll_pp_extent_lock);
2388 /* Extent statistics */
2389 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
2390 if (rw_extents->pp_extents[i].pid == pid) {
2398 sbi->ll_extent_process_count =
2399 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
2400 cur = sbi->ll_extent_process_count;
2401 rw_extents->pp_extents[cur].pid = pid;
2402 lprocfs_oh_clear(&rw_extents->pp_extents[cur].pp_r_hist);
2403 lprocfs_oh_clear(&rw_extents->pp_extents[cur].pp_w_hist);
2406 for (i = 0; (count >= 1 << (LL_HIST_START + i)) &&
2407 (i < (LL_HIST_MAX - 1)); i++);
2409 rw_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
2410 rw_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
2412 rw_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
2413 rw_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
2415 spin_unlock(&sbi->ll_pp_extent_lock);
2417 spin_lock(&sbi->ll_process_lock);
2418 process = sbi->ll_rw_process_info;
2419 offset = sbi->ll_rw_offset_info;
2420 if (!process || !offset)
2423 /* Offset statistics */
2424 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
2425 if (process[i].rw_pid == pid) {
2426 if (process[i].rw_last_file != file) {
2427 process[i].rw_range_start = pos;
2428 process[i].rw_last_file_pos = pos + count;
2429 process[i].rw_smallest_extent = count;
2430 process[i].rw_largest_extent = count;
2431 process[i].rw_offset = 0;
2432 process[i].rw_last_file = file;
2435 if (process[i].rw_last_file_pos != pos) {
2437 (*off_count + 1) % LL_OFFSET_HIST_MAX;
2438 offset[*off_count].rw_op = process[i].rw_op;
2439 offset[*off_count].rw_pid = pid;
2440 offset[*off_count].rw_range_start =
2441 process[i].rw_range_start;
2442 offset[*off_count].rw_range_end =
2443 process[i].rw_last_file_pos;
2444 offset[*off_count].rw_smallest_extent =
2445 process[i].rw_smallest_extent;
2446 offset[*off_count].rw_largest_extent =
2447 process[i].rw_largest_extent;
2448 offset[*off_count].rw_offset =
2449 process[i].rw_offset;
2450 process[i].rw_op = rw;
2451 process[i].rw_range_start = pos;
2452 process[i].rw_smallest_extent = count;
2453 process[i].rw_largest_extent = count;
2454 process[i].rw_offset = pos -
2455 process[i].rw_last_file_pos;
2457 if (process[i].rw_smallest_extent > count)
2458 process[i].rw_smallest_extent = count;
2459 if (process[i].rw_largest_extent < count)
2460 process[i].rw_largest_extent = count;
2461 process[i].rw_last_file_pos = pos + count;
2465 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
2466 process[*process_count].rw_pid = pid;
2467 process[*process_count].rw_op = rw;
2468 process[*process_count].rw_range_start = pos;
2469 process[*process_count].rw_last_file_pos = pos + count;
2470 process[*process_count].rw_smallest_extent = count;
2471 process[*process_count].rw_largest_extent = count;
2472 process[*process_count].rw_offset = 0;
2473 process[*process_count].rw_last_file = file;
2476 spin_unlock(&sbi->ll_process_lock);
2479 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
2481 struct ll_sb_info *sbi = seq->private;
2482 struct ll_rw_process_info *offset;
2483 struct ll_rw_process_info *process;
2486 if (!sbi->ll_rw_stats_on) {
2487 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
2491 spin_lock(&sbi->ll_process_lock);
2492 lprocfs_stats_header(seq, ktime_get_real(), sbi->ll_process_stats_init,
2494 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
2495 "R/W", "PID", "RANGE START", "RANGE END",
2496 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
2498 /* We stored the discontiguous offsets here; print them first */
2499 offset = sbi->ll_rw_offset_info;
2500 for (i = 0; offset && i < LL_OFFSET_HIST_MAX; i++) {
2501 if (offset[i].rw_pid != 0)
2503 "%3c %10d %14llu %14llu %17lu %17lu %14lld\n",
2504 offset[i].rw_op == READ ? 'R' : 'W',
2506 offset[i].rw_range_start,
2507 offset[i].rw_range_end,
2508 (unsigned long)offset[i].rw_smallest_extent,
2509 (unsigned long)offset[i].rw_largest_extent,
2510 offset[i].rw_offset);
2513 /* Then print the current offsets for each process */
2514 process = sbi->ll_rw_process_info;
2515 for (i = 0; process && i < LL_PROCESS_HIST_MAX; i++) {
2516 if (process[i].rw_pid != 0)
2518 "%3c %10d %14llu %14llu %17lu %17lu %14lld\n",
2519 process[i].rw_op == READ ? 'R' : 'W',
2521 process[i].rw_range_start,
2522 process[i].rw_last_file_pos,
2523 (unsigned long)process[i].rw_smallest_extent,
2524 (unsigned long)process[i].rw_largest_extent,
2525 process[i].rw_offset);
2527 spin_unlock(&sbi->ll_process_lock);
2532 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
2533 const char __user *buf,
2534 size_t len, loff_t *off)
2536 struct seq_file *seq = file->private_data;
2537 struct ll_sb_info *sbi = seq->private;
2543 value = ll_stats_pid_write(buf, len);
2546 sbi->ll_rw_stats_on = 0;
2548 if (!sbi->ll_rw_process_info || !sbi->ll_rw_offset_info) {
2549 int rc = alloc_rw_stats_info(sbi);
2554 sbi->ll_rw_stats_on = 1;
2557 spin_lock(&sbi->ll_process_lock);
2558 sbi->ll_offset_process_count = 0;
2559 sbi->ll_rw_offset_entry_count = 0;
2560 sbi->ll_process_stats_init = ktime_get_real();
2561 if (sbi->ll_rw_process_info)
2562 memset(sbi->ll_rw_process_info, 0,
2563 sizeof(struct ll_rw_process_info) * LL_PROCESS_HIST_MAX);
2564 if (sbi->ll_rw_offset_info)
2565 memset(sbi->ll_rw_offset_info, 0,
2566 sizeof(struct ll_rw_process_info) * LL_OFFSET_HIST_MAX);
2567 spin_unlock(&sbi->ll_process_lock);
2572 LDEBUGFS_SEQ_FOPS(ll_rw_offset_stats);