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 #include <linux/uidgid.h>
38 #include <uapi/linux/lustre/lustre_param.h>
39 #include <lprocfs_status.h>
40 #include <obd_support.h>
42 #include "llite_internal.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 static ssize_t fstype_show(struct kobject *kobj, struct attribute *attr,
295 return sprintf(buf, "lustre\n");
297 LUSTRE_RO_ATTR(fstype);
299 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
302 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
305 return sprintf(buf, "%s\n", sbi->ll_sb_uuid.uuid);
307 LUSTRE_RO_ATTR(uuid);
309 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
311 struct super_block *sb = m->private;
314 * See description of statistical counters in struct cl_site, and
317 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
320 LDEBUGFS_SEQ_FOPS_RO(ll_site_stats);
322 static ssize_t max_read_ahead_mb_show(struct kobject *kobj,
323 struct attribute *attr, char *buf)
325 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
328 return scnprintf(buf, PAGE_SIZE, "%lu\n",
329 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages));
332 static ssize_t max_read_ahead_mb_store(struct kobject *kobj,
333 struct attribute *attr,
334 const char *buffer, size_t count)
336 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
338 u64 ra_max_mb, pages_number;
341 rc = sysfs_memparse(buffer, count, &ra_max_mb, "MiB");
345 pages_number = round_up(ra_max_mb, 1024 * 1024) >> PAGE_SHIFT;
346 CDEBUG(D_INFO, "%s: set max_read_ahead_mb=%llu (%llu pages)\n",
347 sbi->ll_fsname, PAGES_TO_MiB(pages_number), pages_number);
348 if (pages_number > cfs_totalram_pages() / 2) {
350 CERROR("%s: cannot set max_read_ahead_mb=%llu > totalram/2=%luMB\n",
351 sbi->ll_fsname, PAGES_TO_MiB(pages_number),
352 PAGES_TO_MiB(cfs_totalram_pages() / 2));
356 spin_lock(&sbi->ll_lock);
357 sbi->ll_ra_info.ra_max_pages = pages_number;
358 spin_unlock(&sbi->ll_lock);
362 LUSTRE_RW_ATTR(max_read_ahead_mb);
364 static ssize_t max_read_ahead_per_file_mb_show(struct kobject *kobj,
365 struct attribute *attr,
368 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
371 return scnprintf(buf, PAGE_SIZE, "%lu\n",
372 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages_per_file));
375 static ssize_t max_read_ahead_per_file_mb_store(struct kobject *kobj,
376 struct attribute *attr,
380 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
382 u64 ra_max_file_mb, pages_number;
385 rc = sysfs_memparse(buffer, count, &ra_max_file_mb, "MiB");
389 pages_number = round_up(ra_max_file_mb, 1024 * 1024) >> PAGE_SHIFT;
390 if (pages_number > sbi->ll_ra_info.ra_max_pages) {
391 CERROR("%s: cannot set max_read_ahead_per_file_mb=%llu > max_read_ahead_mb=%lu\n",
392 sbi->ll_fsname, PAGES_TO_MiB(pages_number),
393 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages));
397 spin_lock(&sbi->ll_lock);
398 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
399 spin_unlock(&sbi->ll_lock);
403 LUSTRE_RW_ATTR(max_read_ahead_per_file_mb);
405 static ssize_t max_read_ahead_whole_mb_show(struct kobject *kobj,
406 struct attribute *attr, char *buf)
408 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
411 return scnprintf(buf, PAGE_SIZE, "%lu\n",
412 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_read_ahead_whole_pages));
415 static ssize_t max_read_ahead_whole_mb_store(struct kobject *kobj,
416 struct attribute *attr,
417 const char *buffer, size_t count)
419 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
421 u64 ra_max_whole_mb, pages_number;
424 rc = sysfs_memparse(buffer, count, &ra_max_whole_mb, "MiB");
428 pages_number = round_up(ra_max_whole_mb, 1024 * 1024) >> PAGE_SHIFT;
429 /* Cap this at the current max readahead window size, the readahead
430 * algorithm does this anyway so it's pointless to set it larger.
432 if (pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
433 CERROR("%s: cannot set max_read_ahead_whole_mb=%llu > max_read_ahead_per_file_mb=%lu\n",
434 sbi->ll_fsname, PAGES_TO_MiB(pages_number),
435 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages_per_file));
440 spin_lock(&sbi->ll_lock);
441 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
442 spin_unlock(&sbi->ll_lock);
446 LUSTRE_RW_ATTR(max_read_ahead_whole_mb);
448 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
450 struct super_block *sb = m->private;
451 struct ll_sb_info *sbi = ll_s2sbi(sb);
452 struct cl_client_cache *cache = sbi->ll_cache;
456 mutex_lock(&cache->ccc_max_cache_mb_lock);
457 max_cached_mb = PAGES_TO_MiB(cache->ccc_lru_max);
458 unused_mb = PAGES_TO_MiB(atomic_long_read(&cache->ccc_lru_left));
459 mutex_unlock(&cache->ccc_max_cache_mb_lock);
460 seq_printf(m, "users: %d\n"
461 "max_cached_mb: %ld\n"
464 "reclaim_count: %u\n",
465 atomic_read(&cache->ccc_users),
467 max_cached_mb - unused_mb,
469 cache->ccc_lru_shrinkers);
473 static ssize_t ll_max_cached_mb_seq_write(struct file *file,
474 const char __user *buffer,
475 size_t count, loff_t *off)
477 struct seq_file *m = file->private_data;
478 struct super_block *sb = m->private;
479 struct ll_sb_info *sbi = ll_s2sbi(sb);
480 struct cl_client_cache *cache = sbi->ll_cache;
487 char kernbuf[128], *ptr;
490 if (count >= sizeof(kernbuf))
493 if (copy_from_user(kernbuf, buffer, count))
495 kernbuf[count] = '\0';
497 ptr = lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count);
498 rc = sysfs_memparse(ptr, count, &pages_number, "MiB");
502 pages_number >>= PAGE_SHIFT;
504 if (pages_number < 0 || pages_number > cfs_totalram_pages()) {
505 CERROR("%s: can't set max cache more than %lu MB\n",
507 PAGES_TO_MiB(cfs_totalram_pages()));
510 /* Allow enough cache so clients can make well-formed RPCs */
511 pages_number = max_t(long, pages_number, PTLRPC_MAX_BRW_PAGES);
513 mutex_lock(&cache->ccc_max_cache_mb_lock);
514 diff = pages_number - cache->ccc_lru_max;
516 /* easy - add more LRU slots. */
518 atomic_long_add(diff, &cache->ccc_lru_left);
522 env = cl_env_get(&refcheck);
524 GOTO(out_unlock, rc = PTR_ERR(env));
530 /* reduce LRU budget from free slots. */
532 long lru_left_old, lru_left_new, lru_left_ret;
534 lru_left_old = atomic_long_read(&cache->ccc_lru_left);
535 if (lru_left_old == 0)
538 lru_left_new = lru_left_old > diff ?
539 lru_left_old - diff : 0;
541 atomic_long_cmpxchg(&cache->ccc_lru_left,
544 if (likely(lru_left_old == lru_left_ret)) {
545 diff -= lru_left_old - lru_left_new;
546 nrpages += lru_left_old - lru_left_new;
554 if (sbi->ll_dt_exp == NULL) { /* being initialized */
559 /* Request extra free slots to avoid them all being used
560 * by other processes before this can continue shrinking.
562 tmp = diff + min_t(long, diff, MiB_TO_PAGES(1024));
563 /* difficult - have to ask OSCs to drop LRU slots. */
564 rc = obd_set_info_async(env, sbi->ll_dt_exp,
565 sizeof(KEY_CACHE_LRU_SHRINK),
566 KEY_CACHE_LRU_SHRINK,
567 sizeof(tmp), &tmp, NULL);
571 cl_env_put(env, &refcheck);
575 cache->ccc_lru_max = pages_number;
578 atomic_long_add(nrpages, &cache->ccc_lru_left);
581 mutex_unlock(&cache->ccc_max_cache_mb_lock);
584 LDEBUGFS_SEQ_FOPS(ll_max_cached_mb);
586 static ssize_t checksums_show(struct kobject *kobj, struct attribute *attr,
589 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
592 return sprintf(buf, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
595 static ssize_t checksums_store(struct kobject *kobj, struct attribute *attr,
596 const char *buffer, size_t count)
598 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
608 rc = kstrtobool(buffer, &val);
612 sbi->ll_flags |= LL_SBI_CHECKSUM;
614 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
617 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
618 KEY_CHECKSUM, sizeof(tmp), &tmp, NULL);
620 CWARN("Failed to set OSC checksum flags: %d\n", rc);
624 LUSTRE_RW_ATTR(checksums);
626 LUSTRE_ATTR(checksum_pages, 0644, checksums_show, checksums_store);
628 static ssize_t ll_rd_track_id(struct kobject *kobj, char *buf,
629 enum stats_track_type type)
631 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
634 if (sbi->ll_stats_track_type == type)
635 return sprintf(buf, "%d\n", sbi->ll_stats_track_id);
636 else if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
637 return sprintf(buf, "0 (all)\n");
639 return sprintf(buf, "untracked\n");
642 static ssize_t ll_wr_track_id(struct kobject *kobj, const char *buffer,
643 size_t count, enum stats_track_type type)
645 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
650 rc = kstrtoul(buffer, 10, &pid);
654 sbi->ll_stats_track_id = pid;
656 sbi->ll_stats_track_type = STATS_TRACK_ALL;
658 sbi->ll_stats_track_type = type;
659 lprocfs_clear_stats(sbi->ll_stats);
663 static ssize_t stats_track_pid_show(struct kobject *kobj,
664 struct attribute *attr,
667 return ll_rd_track_id(kobj, buf, STATS_TRACK_PID);
670 static ssize_t stats_track_pid_store(struct kobject *kobj,
671 struct attribute *attr,
675 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_PID);
677 LUSTRE_RW_ATTR(stats_track_pid);
679 static ssize_t stats_track_ppid_show(struct kobject *kobj,
680 struct attribute *attr,
683 return ll_rd_track_id(kobj, buf, STATS_TRACK_PPID);
686 static ssize_t stats_track_ppid_store(struct kobject *kobj,
687 struct attribute *attr,
691 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_PPID);
693 LUSTRE_RW_ATTR(stats_track_ppid);
695 static ssize_t stats_track_gid_show(struct kobject *kobj,
696 struct attribute *attr,
699 return ll_rd_track_id(kobj, buf, STATS_TRACK_GID);
702 static ssize_t stats_track_gid_store(struct kobject *kobj,
703 struct attribute *attr,
707 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_GID);
709 LUSTRE_RW_ATTR(stats_track_gid);
711 static ssize_t statahead_running_max_show(struct kobject *kobj,
712 struct attribute *attr,
715 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
718 return snprintf(buf, 16, "%u\n", sbi->ll_sa_running_max);
721 static ssize_t statahead_running_max_store(struct kobject *kobj,
722 struct attribute *attr,
726 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
731 rc = kstrtoul(buffer, 0, &val);
735 if (val <= LL_SA_RUNNING_MAX) {
736 sbi->ll_sa_running_max = val;
740 CERROR("Bad statahead_running_max value %lu. Valid values "
741 "are in the range [0, %d]\n", val, LL_SA_RUNNING_MAX);
745 LUSTRE_RW_ATTR(statahead_running_max);
747 static ssize_t statahead_max_show(struct kobject *kobj,
748 struct attribute *attr,
751 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
754 return sprintf(buf, "%u\n", sbi->ll_sa_max);
757 static ssize_t statahead_max_store(struct kobject *kobj,
758 struct attribute *attr,
762 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
767 rc = kstrtoul(buffer, 0, &val);
771 if (val <= LL_SA_RPC_MAX)
772 sbi->ll_sa_max = val;
774 CERROR("Bad statahead_max value %lu. Valid values are in the range [0, %d]\n",
779 LUSTRE_RW_ATTR(statahead_max);
781 static ssize_t statahead_agl_show(struct kobject *kobj,
782 struct attribute *attr,
785 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
788 return sprintf(buf, "%u\n", sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
791 static ssize_t statahead_agl_store(struct kobject *kobj,
792 struct attribute *attr,
796 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
801 rc = kstrtobool(buffer, &val);
806 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
808 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
812 LUSTRE_RW_ATTR(statahead_agl);
814 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
816 struct super_block *sb = m->private;
817 struct ll_sb_info *sbi = ll_s2sbi(sb);
819 seq_printf(m, "statahead total: %u\n"
820 "statahead wrong: %u\n"
822 atomic_read(&sbi->ll_sa_total),
823 atomic_read(&sbi->ll_sa_wrong),
824 atomic_read(&sbi->ll_agl_total));
828 LDEBUGFS_SEQ_FOPS_RO(ll_statahead_stats);
830 static ssize_t lazystatfs_show(struct kobject *kobj,
831 struct attribute *attr,
834 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
837 return sprintf(buf, "%u\n", (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
840 static ssize_t lazystatfs_store(struct kobject *kobj,
841 struct attribute *attr,
845 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
850 rc = kstrtobool(buffer, &val);
855 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
857 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
861 LUSTRE_RW_ATTR(lazystatfs);
863 static ssize_t statfs_max_age_show(struct kobject *kobj, struct attribute *attr,
866 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
869 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_statfs_max_age);
872 static ssize_t statfs_max_age_store(struct kobject *kobj,
873 struct attribute *attr, const char *buffer,
876 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
881 rc = kstrtouint(buffer, 10, &val);
884 if (val > OBD_STATFS_CACHE_MAX_AGE)
887 sbi->ll_statfs_max_age = val;
891 LUSTRE_RW_ATTR(statfs_max_age);
893 static ssize_t max_easize_show(struct kobject *kobj,
894 struct attribute *attr,
897 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
902 rc = ll_get_max_mdsize(sbi, &ealen);
906 /* Limit xattr size returned to userspace based on kernel maximum */
907 return snprintf(buf, PAGE_SIZE, "%u\n",
908 ealen > XATTR_SIZE_MAX ? XATTR_SIZE_MAX : ealen);
910 LUSTRE_RO_ATTR(max_easize);
913 * Get default_easize.
915 * \see client_obd::cl_default_mds_easize
917 * \param[in] m seq_file handle
918 * \param[in] v unused for single entry
920 * \retval 0 on success
921 * \retval negative negated errno on failure
923 static ssize_t default_easize_show(struct kobject *kobj,
924 struct attribute *attr,
927 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
932 rc = ll_get_default_mdsize(sbi, &ealen);
936 /* Limit xattr size returned to userspace based on kernel maximum */
937 return snprintf(buf, PAGE_SIZE, "%u\n",
938 ealen > XATTR_SIZE_MAX ? XATTR_SIZE_MAX : ealen);
942 * Set default_easize.
944 * Range checking on the passed value is handled by
945 * ll_set_default_mdsize().
947 * \see client_obd::cl_default_mds_easize
949 * \param[in] file proc file
950 * \param[in] buffer string passed from user space
951 * \param[in] count \a buffer length
952 * \param[in] off unused for single entry
954 * \retval positive \a count on success
955 * \retval negative negated errno on failure
957 static ssize_t default_easize_store(struct kobject *kobj,
958 struct attribute *attr,
962 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
970 rc = kstrtouint(buffer, 10, &val);
974 rc = ll_set_default_mdsize(sbi, val);
980 LUSTRE_RW_ATTR(default_easize);
982 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
984 const char *str[] = LL_SBI_FLAGS;
985 struct super_block *sb = m->private;
986 int flags = ll_s2sbi(sb)->ll_flags;
990 if (ARRAY_SIZE(str) <= i) {
991 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
992 "flags please.\n", ll_s2sbi(sb)->ll_fsname);
997 seq_printf(m, "%s ", str[i]);
1001 seq_printf(m, "\b\n");
1005 LDEBUGFS_SEQ_FOPS_RO(ll_sbi_flags);
1007 static ssize_t xattr_cache_show(struct kobject *kobj,
1008 struct attribute *attr,
1011 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1014 return sprintf(buf, "%u\n", sbi->ll_xattr_cache_enabled);
1017 static ssize_t xattr_cache_store(struct kobject *kobj,
1018 struct attribute *attr,
1022 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1027 rc = kstrtobool(buffer, &val);
1031 if (val && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
1034 sbi->ll_xattr_cache_enabled = val;
1035 sbi->ll_xattr_cache_set = 1;
1039 LUSTRE_RW_ATTR(xattr_cache);
1041 static ssize_t tiny_write_show(struct kobject *kobj,
1042 struct attribute *attr,
1045 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1048 return sprintf(buf, "%u\n", !!(sbi->ll_flags & LL_SBI_TINY_WRITE));
1051 static ssize_t tiny_write_store(struct kobject *kobj,
1052 struct attribute *attr,
1056 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1061 rc = kstrtobool(buffer, &val);
1065 spin_lock(&sbi->ll_lock);
1067 sbi->ll_flags |= LL_SBI_TINY_WRITE;
1069 sbi->ll_flags &= ~LL_SBI_TINY_WRITE;
1070 spin_unlock(&sbi->ll_lock);
1074 LUSTRE_RW_ATTR(tiny_write);
1076 static ssize_t max_read_ahead_async_active_show(struct kobject *kobj,
1077 struct attribute *attr,
1080 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1083 return snprintf(buf, PAGE_SIZE, "%u\n",
1084 sbi->ll_ra_info.ra_async_max_active);
1087 static ssize_t max_read_ahead_async_active_store(struct kobject *kobj,
1088 struct attribute *attr,
1092 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1097 rc = kstrtouint(buffer, 10, &val);
1102 * It doesn't make any sense to make it exceed what
1103 * workqueue could acutally support. This can easily
1104 * over subscripe the cores but Lustre internally
1105 * throttles to avoid those impacts.
1107 if (val > WQ_UNBOUND_MAX_ACTIVE) {
1108 CERROR("%s: cannot set max_read_ahead_async_active=%u larger than %u\n",
1109 sbi->ll_fsname, val, WQ_UNBOUND_MAX_ACTIVE);
1113 spin_lock(&sbi->ll_lock);
1114 sbi->ll_ra_info.ra_async_max_active = val;
1115 spin_unlock(&sbi->ll_lock);
1119 LUSTRE_RW_ATTR(max_read_ahead_async_active);
1121 static ssize_t read_ahead_async_file_threshold_mb_show(struct kobject *kobj,
1122 struct attribute *attr,
1125 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1128 return snprintf(buf, PAGE_SIZE, "%lu\n",
1129 PAGES_TO_MiB(sbi->ll_ra_info.ra_async_pages_per_file_threshold));
1133 read_ahead_async_file_threshold_mb_store(struct kobject *kobj,
1134 struct attribute *attr,
1135 const char *buffer, size_t count)
1137 unsigned long pages_number;
1138 unsigned long max_ra_per_file;
1139 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1143 rc = kstrtoul(buffer, 10, &pages_number);
1147 pages_number = MiB_TO_PAGES(pages_number);
1148 max_ra_per_file = sbi->ll_ra_info.ra_max_pages_per_file;
1149 if (pages_number < 0 || pages_number > max_ra_per_file) {
1150 CERROR("%s: can't set read_ahead_async_file_threshold_mb=%lu > "
1151 "max_read_readahead_per_file_mb=%lu\n", sbi->ll_fsname,
1152 PAGES_TO_MiB(pages_number),
1153 PAGES_TO_MiB(max_ra_per_file));
1156 sbi->ll_ra_info.ra_async_pages_per_file_threshold = pages_number;
1160 LUSTRE_RW_ATTR(read_ahead_async_file_threshold_mb);
1162 static ssize_t fast_read_show(struct kobject *kobj,
1163 struct attribute *attr,
1166 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1169 return sprintf(buf, "%u\n", !!(sbi->ll_flags & LL_SBI_FAST_READ));
1172 static ssize_t fast_read_store(struct kobject *kobj,
1173 struct attribute *attr,
1177 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1182 rc = kstrtobool(buffer, &val);
1186 spin_lock(&sbi->ll_lock);
1188 sbi->ll_flags |= LL_SBI_FAST_READ;
1190 sbi->ll_flags &= ~LL_SBI_FAST_READ;
1191 spin_unlock(&sbi->ll_lock);
1195 LUSTRE_RW_ATTR(fast_read);
1197 static ssize_t file_heat_show(struct kobject *kobj,
1198 struct attribute *attr,
1201 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1204 return snprintf(buf, PAGE_SIZE, "%u\n",
1205 !!(sbi->ll_flags & LL_SBI_FILE_HEAT));
1208 static ssize_t file_heat_store(struct kobject *kobj,
1209 struct attribute *attr,
1213 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1218 rc = kstrtobool(buffer, &val);
1222 spin_lock(&sbi->ll_lock);
1224 sbi->ll_flags |= LL_SBI_FILE_HEAT;
1226 sbi->ll_flags &= ~LL_SBI_FILE_HEAT;
1227 spin_unlock(&sbi->ll_lock);
1231 LUSTRE_RW_ATTR(file_heat);
1233 static ssize_t heat_decay_percentage_show(struct kobject *kobj,
1234 struct attribute *attr,
1237 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1240 return snprintf(buf, PAGE_SIZE, "%u\n",
1241 (sbi->ll_heat_decay_weight * 100 + 128) / 256);
1244 static ssize_t heat_decay_percentage_store(struct kobject *kobj,
1245 struct attribute *attr,
1249 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1254 rc = kstrtoul(buffer, 10, &val);
1258 if (val < 0 || val > 100)
1261 sbi->ll_heat_decay_weight = (val * 256 + 50) / 100;
1265 LUSTRE_RW_ATTR(heat_decay_percentage);
1267 static ssize_t heat_period_second_show(struct kobject *kobj,
1268 struct attribute *attr,
1271 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1274 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_heat_period_second);
1277 static ssize_t heat_period_second_store(struct kobject *kobj,
1278 struct attribute *attr,
1282 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1287 rc = kstrtoul(buffer, 10, &val);
1294 sbi->ll_heat_period_second = val;
1298 LUSTRE_RW_ATTR(heat_period_second);
1300 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
1302 struct super_block *sb = m->private;
1303 struct ll_sb_info *sbi = ll_s2sbi(sb);
1304 struct cl_client_cache *cache = sbi->ll_cache;
1308 pages = atomic_long_read(&cache->ccc_unstable_nr);
1309 mb = (pages * PAGE_SIZE) >> 20;
1311 seq_printf(m, "unstable_check: %8d\n"
1312 "unstable_pages: %12ld\n"
1313 "unstable_mb: %8d\n",
1314 cache->ccc_unstable_check, pages, mb);
1318 static ssize_t ll_unstable_stats_seq_write(struct file *file,
1319 const char __user *buffer,
1320 size_t count, loff_t *unused)
1322 struct seq_file *seq = file->private_data;
1323 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
1330 if (count >= sizeof(kernbuf))
1333 if (copy_from_user(kernbuf, buffer, count))
1337 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
1339 rc = kstrtobool_from_user(buffer, count, &val);
1343 /* borrow lru lock to set the value */
1344 spin_lock(&sbi->ll_cache->ccc_lru_lock);
1345 sbi->ll_cache->ccc_unstable_check = val;
1346 spin_unlock(&sbi->ll_cache->ccc_lru_lock);
1351 LDEBUGFS_SEQ_FOPS(ll_unstable_stats);
1353 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
1355 struct super_block *sb = m->private;
1356 struct ll_sb_info *sbi = ll_s2sbi(sb);
1357 struct root_squash_info *squash = &sbi->ll_squash;
1359 seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
1363 static ssize_t ll_root_squash_seq_write(struct file *file,
1364 const char __user *buffer,
1365 size_t count, loff_t *off)
1367 struct seq_file *m = file->private_data;
1368 struct super_block *sb = m->private;
1369 struct ll_sb_info *sbi = ll_s2sbi(sb);
1370 struct root_squash_info *squash = &sbi->ll_squash;
1372 return lprocfs_wr_root_squash(buffer, count, squash, sbi->ll_fsname);
1375 LDEBUGFS_SEQ_FOPS(ll_root_squash);
1377 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
1379 struct super_block *sb = m->private;
1380 struct ll_sb_info *sbi = ll_s2sbi(sb);
1381 struct root_squash_info *squash = &sbi->ll_squash;
1384 spin_lock(&squash->rsi_lock);
1385 if (!list_empty(&squash->rsi_nosquash_nids)) {
1386 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
1387 &squash->rsi_nosquash_nids);
1391 seq_puts(m, "NONE\n");
1393 spin_unlock(&squash->rsi_lock);
1398 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
1399 const char __user *buffer,
1400 size_t count, loff_t *off)
1402 struct seq_file *m = file->private_data;
1403 struct super_block *sb = m->private;
1404 struct ll_sb_info *sbi = ll_s2sbi(sb);
1405 struct root_squash_info *squash = &sbi->ll_squash;
1408 rc = lprocfs_wr_nosquash_nids(buffer, count, squash, sbi->ll_fsname);
1412 ll_compute_rootsquash_state(sbi);
1417 LDEBUGFS_SEQ_FOPS(ll_nosquash_nids);
1419 static int ll_pcc_seq_show(struct seq_file *m, void *v)
1421 struct super_block *sb = m->private;
1422 struct ll_sb_info *sbi = ll_s2sbi(sb);
1424 return pcc_super_dump(&sbi->ll_pcc_super, m);
1427 static ssize_t ll_pcc_seq_write(struct file *file, const char __user *buffer,
1428 size_t count, loff_t *off)
1430 struct seq_file *m = file->private_data;
1431 struct super_block *sb = m->private;
1432 struct ll_sb_info *sbi = ll_s2sbi(sb);
1436 if (count >= LPROCFS_WR_PCC_MAX_CMD)
1439 if (!(exp_connect_flags2(sbi->ll_md_exp) & OBD_CONNECT2_PCC))
1442 OBD_ALLOC(kernbuf, count + 1);
1443 if (kernbuf == NULL)
1446 if (copy_from_user(kernbuf, buffer, count))
1447 GOTO(out_free_kernbuff, rc = -EFAULT);
1449 rc = pcc_cmd_handle(kernbuf, count, &sbi->ll_pcc_super);
1451 OBD_FREE(kernbuf, count + 1);
1452 return rc ? rc : count;
1454 LDEBUGFS_SEQ_FOPS(ll_pcc);
1456 struct ldebugfs_vars lprocfs_llite_obd_vars[] = {
1458 .fops = &ll_site_stats_fops },
1459 { .name = "max_cached_mb",
1460 .fops = &ll_max_cached_mb_fops },
1461 { .name = "statahead_stats",
1462 .fops = &ll_statahead_stats_fops },
1463 { .name = "unstable_stats",
1464 .fops = &ll_unstable_stats_fops },
1465 { .name = "sbi_flags",
1466 .fops = &ll_sbi_flags_fops },
1467 { .name = "root_squash",
1468 .fops = &ll_root_squash_fops },
1469 { .name = "nosquash_nids",
1470 .fops = &ll_nosquash_nids_fops },
1472 .fops = &ll_pcc_fops, },
1476 #define MAX_STRING_SIZE 128
1478 static struct attribute *llite_attrs[] = {
1479 &lustre_attr_blocksize.attr,
1480 &lustre_attr_stat_blocksize.attr,
1481 &lustre_attr_kbytestotal.attr,
1482 &lustre_attr_kbytesfree.attr,
1483 &lustre_attr_kbytesavail.attr,
1484 &lustre_attr_filestotal.attr,
1485 &lustre_attr_filesfree.attr,
1486 &lustre_attr_client_type.attr,
1487 &lustre_attr_fstype.attr,
1488 &lustre_attr_uuid.attr,
1489 &lustre_attr_checksums.attr,
1490 &lustre_attr_checksum_pages.attr,
1491 &lustre_attr_max_read_ahead_mb.attr,
1492 &lustre_attr_max_read_ahead_per_file_mb.attr,
1493 &lustre_attr_max_read_ahead_whole_mb.attr,
1494 &lustre_attr_max_read_ahead_async_active.attr,
1495 &lustre_attr_read_ahead_async_file_threshold_mb.attr,
1496 &lustre_attr_stats_track_pid.attr,
1497 &lustre_attr_stats_track_ppid.attr,
1498 &lustre_attr_stats_track_gid.attr,
1499 &lustre_attr_statahead_running_max.attr,
1500 &lustre_attr_statahead_max.attr,
1501 &lustre_attr_statahead_agl.attr,
1502 &lustre_attr_lazystatfs.attr,
1503 &lustre_attr_statfs_max_age.attr,
1504 &lustre_attr_max_easize.attr,
1505 &lustre_attr_default_easize.attr,
1506 &lustre_attr_xattr_cache.attr,
1507 &lustre_attr_fast_read.attr,
1508 &lustre_attr_tiny_write.attr,
1509 &lustre_attr_file_heat.attr,
1510 &lustre_attr_heat_decay_percentage.attr,
1511 &lustre_attr_heat_period_second.attr,
1515 static void sbi_kobj_release(struct kobject *kobj)
1517 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1519 complete(&sbi->ll_kobj_unregister);
1522 static struct kobj_type sbi_ktype = {
1523 .default_attrs = llite_attrs,
1524 .sysfs_ops = &lustre_sysfs_ops,
1525 .release = sbi_kobj_release,
1528 static const struct llite_file_opcode {
1532 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
1533 /* file operation */
1534 { LPROC_LL_READ_BYTES, LPROCFS_TYPE_BYTES_FULL, "read_bytes" },
1535 { LPROC_LL_WRITE_BYTES, LPROCFS_TYPE_BYTES_FULL, "write_bytes" },
1536 { LPROC_LL_READ, LPROCFS_TYPE_LATENCY, "read" },
1537 { LPROC_LL_WRITE, LPROCFS_TYPE_LATENCY, "write" },
1538 { LPROC_LL_IOCTL, LPROCFS_TYPE_REQS, "ioctl" },
1539 { LPROC_LL_OPEN, LPROCFS_TYPE_LATENCY, "open" },
1540 { LPROC_LL_RELEASE, LPROCFS_TYPE_LATENCY, "close" },
1541 { LPROC_LL_MMAP, LPROCFS_TYPE_LATENCY, "mmap" },
1542 { LPROC_LL_FAULT, LPROCFS_TYPE_LATENCY, "page_fault" },
1543 { LPROC_LL_MKWRITE, LPROCFS_TYPE_LATENCY, "page_mkwrite" },
1544 { LPROC_LL_LLSEEK, LPROCFS_TYPE_LATENCY, "seek" },
1545 { LPROC_LL_FSYNC, LPROCFS_TYPE_LATENCY, "fsync" },
1546 { LPROC_LL_READDIR, LPROCFS_TYPE_LATENCY, "readdir" },
1547 /* inode operation */
1548 { LPROC_LL_SETATTR, LPROCFS_TYPE_LATENCY, "setattr" },
1549 { LPROC_LL_TRUNC, LPROCFS_TYPE_LATENCY, "truncate" },
1550 { LPROC_LL_FLOCK, LPROCFS_TYPE_LATENCY, "flock" },
1551 { LPROC_LL_GETATTR, LPROCFS_TYPE_LATENCY, "getattr" },
1552 { LPROC_LL_FALLOCATE, LPROCFS_TYPE_LATENCY, "fallocate"},
1553 /* dir inode operation */
1554 { LPROC_LL_CREATE, LPROCFS_TYPE_LATENCY, "create" },
1555 { LPROC_LL_LINK, LPROCFS_TYPE_LATENCY, "link" },
1556 { LPROC_LL_UNLINK, LPROCFS_TYPE_LATENCY, "unlink" },
1557 { LPROC_LL_SYMLINK, LPROCFS_TYPE_LATENCY, "symlink" },
1558 { LPROC_LL_MKDIR, LPROCFS_TYPE_LATENCY, "mkdir" },
1559 { LPROC_LL_RMDIR, LPROCFS_TYPE_LATENCY, "rmdir" },
1560 { LPROC_LL_MKNOD, LPROCFS_TYPE_LATENCY, "mknod" },
1561 { LPROC_LL_RENAME, LPROCFS_TYPE_LATENCY, "rename" },
1562 /* special inode operation */
1563 { LPROC_LL_STATFS, LPROCFS_TYPE_LATENCY, "statfs" },
1564 { LPROC_LL_SETXATTR, LPROCFS_TYPE_LATENCY, "setxattr" },
1565 { LPROC_LL_GETXATTR, LPROCFS_TYPE_LATENCY, "getxattr" },
1566 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REQS, "getxattr_hits" },
1567 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_LATENCY, "listxattr" },
1568 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_LATENCY, "removexattr" },
1569 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_LATENCY, "inode_permission" },
1572 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, long count)
1577 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
1578 lprocfs_counter_add(sbi->ll_stats, op, count);
1579 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
1580 sbi->ll_stats_track_id == current->pid)
1581 lprocfs_counter_add(sbi->ll_stats, op, count);
1582 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
1583 sbi->ll_stats_track_id == current->parent->pid)
1584 lprocfs_counter_add(sbi->ll_stats, op, count);
1585 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
1586 sbi->ll_stats_track_id ==
1587 from_kgid(&init_user_ns, current_gid()))
1588 lprocfs_counter_add(sbi->ll_stats, op, count);
1590 EXPORT_SYMBOL(ll_stats_ops_tally);
1592 static const char *ra_stat_string[] = {
1593 [RA_STAT_HIT] = "hits",
1594 [RA_STAT_MISS] = "misses",
1595 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
1596 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
1597 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
1598 [RA_STAT_FAILED_MATCH] = "failed lock match",
1599 [RA_STAT_DISCARDED] = "read but discarded",
1600 [RA_STAT_ZERO_LEN] = "zero length file",
1601 [RA_STAT_ZERO_WINDOW] = "zero size window",
1602 [RA_STAT_EOF] = "read-ahead to EOF",
1603 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
1604 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
1605 [RA_STAT_FAILED_REACH_END] = "failed to reach end",
1606 [RA_STAT_ASYNC] = "async readahead",
1607 [RA_STAT_FAILED_FAST_READ] = "failed to fast read",
1610 int ll_debugfs_register_super(struct super_block *sb, const char *name)
1612 struct lustre_sb_info *lsi = s2lsi(sb);
1613 struct ll_sb_info *sbi = ll_s2sbi(sb);
1619 if (IS_ERR_OR_NULL(llite_root))
1622 sbi->ll_debugfs_entry = debugfs_create_dir(name, llite_root);
1623 ldebugfs_add_vars(sbi->ll_debugfs_entry, lprocfs_llite_obd_vars, sb);
1625 debugfs_create_file("dump_page_cache", 0444, sbi->ll_debugfs_entry, sbi,
1626 &vvp_dump_pgcache_file_ops);
1628 debugfs_create_file("extents_stats", 0644, sbi->ll_debugfs_entry, sbi,
1629 &ll_rw_extents_stats_fops);
1631 debugfs_create_file("extents_stats_per_process", 0644,
1632 sbi->ll_debugfs_entry, sbi,
1633 &ll_rw_extents_stats_pp_fops);
1635 debugfs_create_file("offset_stats", 0644, sbi->ll_debugfs_entry, sbi,
1636 &ll_rw_offset_stats_fops);
1638 /* File operations stats */
1639 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1640 LPROCFS_STATS_FLAG_NONE);
1641 if (sbi->ll_stats == NULL)
1642 GOTO(out_debugfs, err = -ENOMEM);
1644 /* do counter init */
1645 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1646 u32 type = llite_opcode_table[id].type;
1647 void *ptr = "unknown";
1649 if (type & LPROCFS_TYPE_REQS)
1651 else if (type & LPROCFS_TYPE_BYTES)
1653 else if (type & LPROCFS_TYPE_USEC)
1655 lprocfs_counter_init(sbi->ll_stats,
1656 llite_opcode_table[id].opcode, type,
1657 llite_opcode_table[id].opname, ptr);
1660 debugfs_create_file("stats", 0644, sbi->ll_debugfs_entry,
1661 sbi->ll_stats, &ldebugfs_stats_seq_fops);
1663 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1664 LPROCFS_STATS_FLAG_NONE);
1665 if (sbi->ll_ra_stats == NULL)
1666 GOTO(out_stats, err = -ENOMEM);
1668 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1669 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1670 ra_stat_string[id], "pages");
1672 debugfs_create_file("read_ahead_stats", 0644, sbi->ll_debugfs_entry,
1673 sbi->ll_ra_stats, &ldebugfs_stats_seq_fops);
1676 /* Yes we also register sysfs mount kset here as well */
1677 sbi->ll_kset.kobj.parent = llite_kobj;
1678 sbi->ll_kset.kobj.ktype = &sbi_ktype;
1679 init_completion(&sbi->ll_kobj_unregister);
1680 err = kobject_set_name(&sbi->ll_kset.kobj, "%s", name);
1682 GOTO(out_ra_stats, err);
1684 err = kset_register(&sbi->ll_kset);
1686 GOTO(out_ra_stats, err);
1688 lsi->lsi_kobj = kobject_get(&sbi->ll_kset.kobj);
1692 lprocfs_free_stats(&sbi->ll_ra_stats);
1694 lprocfs_free_stats(&sbi->ll_stats);
1696 debugfs_remove_recursive(sbi->ll_debugfs_entry);
1701 void ll_debugfs_unregister_super(struct super_block *sb)
1703 struct lustre_sb_info *lsi = s2lsi(sb);
1704 struct ll_sb_info *sbi = ll_s2sbi(sb);
1706 debugfs_remove_recursive(sbi->ll_debugfs_entry);
1709 sysfs_remove_link(&sbi->ll_kset.kobj,
1710 sbi->ll_dt_obd->obd_type->typ_name);
1713 sysfs_remove_link(&sbi->ll_kset.kobj,
1714 sbi->ll_md_obd->obd_type->typ_name);
1716 kobject_put(lsi->lsi_kobj);
1718 kset_unregister(&sbi->ll_kset);
1719 wait_for_completion(&sbi->ll_kobj_unregister);
1721 lprocfs_free_stats(&sbi->ll_ra_stats);
1722 lprocfs_free_stats(&sbi->ll_stats);
1724 #undef MAX_STRING_SIZE
1726 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1727 struct seq_file *seq, int which)
1729 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1730 unsigned long start, end, r, w;
1731 char *unitp = "KMGTPEZY";
1733 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1739 for(i = 0; i < LL_HIST_MAX; i++) {
1740 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1741 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1744 for(i = 0; i < LL_HIST_MAX; i++) {
1745 r = pp_info->pp_r_hist.oh_buckets[i];
1746 w = pp_info->pp_w_hist.oh_buckets[i];
1749 end = 1 << (i + LL_HIST_START - units);
1750 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4u %4u | "
1751 "%14lu %4u %4u\n", start, *unitp, end, *unitp,
1752 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1753 r, pct(r, read_tot), pct(read_cum, read_tot),
1754 w, pct(w, write_tot), pct(write_cum, write_tot));
1756 if (start == (1 << 10)) {
1761 if (read_cum == read_tot && write_cum == write_tot)
1766 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1768 struct timespec64 now;
1769 struct ll_sb_info *sbi = seq->private;
1770 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1773 ktime_get_real_ts64(&now);
1775 if (!sbi->ll_rw_stats_on) {
1776 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
1779 seq_printf(seq, "snapshot_time: %llu.%09lu (secs.nsecs)\n",
1780 (s64)now.tv_sec, now.tv_nsec);
1781 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1782 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1783 "extents", "calls", "%", "cum%",
1784 "calls", "%", "cum%");
1785 spin_lock(&sbi->ll_pp_extent_lock);
1786 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1787 if (io_extents->pp_extents[k].pid != 0) {
1788 seq_printf(seq, "\nPID: %d\n",
1789 io_extents->pp_extents[k].pid);
1790 ll_display_extents_info(io_extents, seq, k);
1793 spin_unlock(&sbi->ll_pp_extent_lock);
1797 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1798 const char __user *buf,
1802 struct seq_file *seq = file->private_data;
1803 struct ll_sb_info *sbi = seq->private;
1804 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1811 value = ll_stats_pid_write(buf, len);
1814 sbi->ll_rw_stats_on = 0;
1816 sbi->ll_rw_stats_on = 1;
1818 spin_lock(&sbi->ll_pp_extent_lock);
1819 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1820 io_extents->pp_extents[i].pid = 0;
1821 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1822 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1824 spin_unlock(&sbi->ll_pp_extent_lock);
1828 LDEBUGFS_SEQ_FOPS(ll_rw_extents_stats_pp);
1830 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1832 struct timespec64 now;
1833 struct ll_sb_info *sbi = seq->private;
1834 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1836 ktime_get_real_ts64(&now);
1838 if (!sbi->ll_rw_stats_on) {
1839 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
1842 seq_printf(seq, "snapshot_time: %llu.%09lu (secs.nsecs)\n",
1843 (s64)now.tv_sec, now.tv_nsec);
1845 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1846 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1847 "extents", "calls", "%", "cum%",
1848 "calls", "%", "cum%");
1849 spin_lock(&sbi->ll_lock);
1850 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1851 spin_unlock(&sbi->ll_lock);
1856 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1857 const char __user *buf,
1858 size_t len, loff_t *off)
1860 struct seq_file *seq = file->private_data;
1861 struct ll_sb_info *sbi = seq->private;
1862 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1869 value = ll_stats_pid_write(buf, len);
1872 sbi->ll_rw_stats_on = 0;
1874 sbi->ll_rw_stats_on = 1;
1876 spin_lock(&sbi->ll_pp_extent_lock);
1877 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1878 io_extents->pp_extents[i].pid = 0;
1879 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1880 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1882 spin_unlock(&sbi->ll_pp_extent_lock);
1887 LDEBUGFS_SEQ_FOPS(ll_rw_extents_stats);
1889 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1890 struct ll_file_data *file, loff_t pos,
1891 size_t count, int rw)
1894 struct ll_rw_process_info *process;
1895 struct ll_rw_process_info *offset;
1896 int *off_count = &sbi->ll_rw_offset_entry_count;
1897 int *process_count = &sbi->ll_offset_process_count;
1898 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1900 if(!sbi->ll_rw_stats_on)
1902 process = sbi->ll_rw_process_info;
1903 offset = sbi->ll_rw_offset_info;
1905 spin_lock(&sbi->ll_pp_extent_lock);
1906 /* Extent statistics */
1907 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1908 if(io_extents->pp_extents[i].pid == pid) {
1916 sbi->ll_extent_process_count =
1917 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1918 cur = sbi->ll_extent_process_count;
1919 io_extents->pp_extents[cur].pid = pid;
1920 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1921 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1924 for (i = 0; (count >= 1 << (LL_HIST_START + i)) &&
1925 (i < (LL_HIST_MAX - 1)); i++);
1927 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1928 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1930 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1931 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1933 spin_unlock(&sbi->ll_pp_extent_lock);
1935 spin_lock(&sbi->ll_process_lock);
1936 /* Offset statistics */
1937 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1938 if (process[i].rw_pid == pid) {
1939 if (process[i].rw_last_file != file) {
1940 process[i].rw_range_start = pos;
1941 process[i].rw_last_file_pos = pos + count;
1942 process[i].rw_smallest_extent = count;
1943 process[i].rw_largest_extent = count;
1944 process[i].rw_offset = 0;
1945 process[i].rw_last_file = file;
1946 spin_unlock(&sbi->ll_process_lock);
1949 if (process[i].rw_last_file_pos != pos) {
1951 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1952 offset[*off_count].rw_op = process[i].rw_op;
1953 offset[*off_count].rw_pid = pid;
1954 offset[*off_count].rw_range_start =
1955 process[i].rw_range_start;
1956 offset[*off_count].rw_range_end =
1957 process[i].rw_last_file_pos;
1958 offset[*off_count].rw_smallest_extent =
1959 process[i].rw_smallest_extent;
1960 offset[*off_count].rw_largest_extent =
1961 process[i].rw_largest_extent;
1962 offset[*off_count].rw_offset =
1963 process[i].rw_offset;
1964 process[i].rw_op = rw;
1965 process[i].rw_range_start = pos;
1966 process[i].rw_smallest_extent = count;
1967 process[i].rw_largest_extent = count;
1968 process[i].rw_offset = pos -
1969 process[i].rw_last_file_pos;
1971 if(process[i].rw_smallest_extent > count)
1972 process[i].rw_smallest_extent = count;
1973 if(process[i].rw_largest_extent < count)
1974 process[i].rw_largest_extent = count;
1975 process[i].rw_last_file_pos = pos + count;
1976 spin_unlock(&sbi->ll_process_lock);
1980 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1981 process[*process_count].rw_pid = pid;
1982 process[*process_count].rw_op = rw;
1983 process[*process_count].rw_range_start = pos;
1984 process[*process_count].rw_last_file_pos = pos + count;
1985 process[*process_count].rw_smallest_extent = count;
1986 process[*process_count].rw_largest_extent = count;
1987 process[*process_count].rw_offset = 0;
1988 process[*process_count].rw_last_file = file;
1989 spin_unlock(&sbi->ll_process_lock);
1992 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1994 struct timespec64 now;
1995 struct ll_sb_info *sbi = seq->private;
1996 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1997 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
2000 ktime_get_real_ts64(&now);
2002 if (!sbi->ll_rw_stats_on) {
2003 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
2006 spin_lock(&sbi->ll_process_lock);
2008 seq_printf(seq, "snapshot_time: %llu.%09lu (secs.nsecs)\n",
2009 (s64)now.tv_sec, now.tv_nsec);
2010 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
2011 "R/W", "PID", "RANGE START", "RANGE END",
2012 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
2014 /* We stored the discontiguous offsets here; print them first */
2015 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
2016 if (offset[i].rw_pid != 0)
2018 "%3c %10d %14llu %14llu %17lu %17lu %14lld\n",
2019 offset[i].rw_op == READ ? 'R' : 'W',
2021 offset[i].rw_range_start,
2022 offset[i].rw_range_end,
2023 (unsigned long)offset[i].rw_smallest_extent,
2024 (unsigned long)offset[i].rw_largest_extent,
2025 offset[i].rw_offset);
2028 /* Then print the current offsets for each process */
2029 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
2030 if (process[i].rw_pid != 0)
2032 "%3c %10d %14llu %14llu %17lu %17lu %14lld\n",
2033 process[i].rw_op == READ ? 'R' : 'W',
2035 process[i].rw_range_start,
2036 process[i].rw_last_file_pos,
2037 (unsigned long)process[i].rw_smallest_extent,
2038 (unsigned long)process[i].rw_largest_extent,
2039 process[i].rw_offset);
2041 spin_unlock(&sbi->ll_process_lock);
2046 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
2047 const char __user *buf,
2048 size_t len, loff_t *off)
2050 struct seq_file *seq = file->private_data;
2051 struct ll_sb_info *sbi = seq->private;
2052 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
2053 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
2059 value = ll_stats_pid_write(buf, len);
2062 sbi->ll_rw_stats_on = 0;
2064 sbi->ll_rw_stats_on = 1;
2066 spin_lock(&sbi->ll_process_lock);
2067 sbi->ll_offset_process_count = 0;
2068 sbi->ll_rw_offset_entry_count = 0;
2069 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
2070 LL_PROCESS_HIST_MAX);
2071 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
2072 LL_OFFSET_HIST_MAX);
2073 spin_unlock(&sbi->ll_process_lock);
2078 LDEBUGFS_SEQ_FOPS(ll_rw_offset_stats);