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;
502 char kernbuf[128], *ptr;
503 bool percent = false;
506 if (count >= sizeof(kernbuf))
509 if (copy_from_user(kernbuf, buffer, count))
512 if (count > 0 && kernbuf[count - 1] == '%') {
514 /* strip off the % */
515 kernbuf[count - 1] = '\0';
517 kernbuf[count] = '\0';
520 ptr = lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count);
522 rc = sysfs_memparse(ptr, count, &value, "B");
524 rc = sysfs_memparse(ptr, count, &value, "MiB");
529 pages_number = cfs_totalram_pages() * value / 100;
531 pages_number = value >> PAGE_SHIFT;
533 if (pages_number < 0 || pages_number > cfs_totalram_pages()) {
534 CERROR("%s: can't set max cache more than %lu MB\n",
536 PAGES_TO_MiB(cfs_totalram_pages()));
539 /* Allow enough cache so clients can make well-formed RPCs */
540 pages_number = max_t(long, pages_number, PTLRPC_MAX_BRW_PAGES);
542 mutex_lock(&cache->ccc_max_cache_mb_lock);
543 diff = pages_number - cache->ccc_lru_max;
545 /* easy - add more LRU slots. */
547 atomic_long_add(diff, &cache->ccc_lru_left);
551 env = cl_env_get(&refcheck);
553 GOTO(out_unlock, rc = PTR_ERR(env));
559 /* reduce LRU budget from free slots. */
561 long lru_left_old, lru_left_new, lru_left_ret;
563 lru_left_old = atomic_long_read(&cache->ccc_lru_left);
564 if (lru_left_old == 0)
567 lru_left_new = lru_left_old > diff ?
568 lru_left_old - diff : 0;
570 atomic_long_cmpxchg(&cache->ccc_lru_left,
573 if (likely(lru_left_old == lru_left_ret)) {
574 diff -= lru_left_old - lru_left_new;
575 nrpages += lru_left_old - lru_left_new;
583 if (sbi->ll_dt_exp == NULL) { /* being initialized */
588 /* Request extra free slots to avoid them all being used
589 * by other processes before this can continue shrinking.
591 tmp = diff + min_t(long, diff, MiB_TO_PAGES(1024));
592 /* difficult - have to ask OSCs to drop LRU slots. */
593 rc = obd_set_info_async(env, sbi->ll_dt_exp,
594 sizeof(KEY_CACHE_LRU_SHRINK),
595 KEY_CACHE_LRU_SHRINK,
596 sizeof(tmp), &tmp, NULL);
600 cl_env_put(env, &refcheck);
604 cache->ccc_lru_max = pages_number;
607 atomic_long_add(nrpages, &cache->ccc_lru_left);
610 mutex_unlock(&cache->ccc_max_cache_mb_lock);
613 LDEBUGFS_SEQ_FOPS(ll_max_cached_mb);
615 static ssize_t checksums_show(struct kobject *kobj, struct attribute *attr,
618 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
621 return scnprintf(buf, PAGE_SIZE, "%u\n",
622 test_bit(LL_SBI_CHECKSUM, sbi->ll_flags));
625 static ssize_t checksums_store(struct kobject *kobj, struct attribute *attr,
626 const char *buffer, size_t count)
628 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
638 rc = kstrtobool(buffer, &val);
642 set_bit(LL_SBI_CHECKSUM, sbi->ll_flags);
644 clear_bit(LL_SBI_CHECKSUM, sbi->ll_flags);
647 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
648 KEY_CHECKSUM, sizeof(tmp), &tmp, NULL);
650 CWARN("Failed to set OSC checksum flags: %d\n", rc);
654 LUSTRE_RW_ATTR(checksums);
656 LUSTRE_ATTR(checksum_pages, 0644, checksums_show, checksums_store);
658 static ssize_t ll_rd_track_id(struct kobject *kobj, char *buf,
659 enum stats_track_type type)
661 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
664 if (sbi->ll_stats_track_type == type)
665 return sprintf(buf, "%d\n", sbi->ll_stats_track_id);
666 else if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
667 return sprintf(buf, "0 (all)\n");
669 return sprintf(buf, "untracked\n");
672 static ssize_t ll_wr_track_id(struct kobject *kobj, const char *buffer,
673 size_t count, enum stats_track_type type)
675 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
680 rc = kstrtoul(buffer, 10, &pid);
684 sbi->ll_stats_track_id = pid;
686 sbi->ll_stats_track_type = STATS_TRACK_ALL;
688 sbi->ll_stats_track_type = type;
689 lprocfs_stats_clear(sbi->ll_stats);
693 static ssize_t stats_track_pid_show(struct kobject *kobj,
694 struct attribute *attr,
697 return ll_rd_track_id(kobj, buf, STATS_TRACK_PID);
700 static ssize_t stats_track_pid_store(struct kobject *kobj,
701 struct attribute *attr,
705 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_PID);
707 LUSTRE_RW_ATTR(stats_track_pid);
709 static ssize_t stats_track_ppid_show(struct kobject *kobj,
710 struct attribute *attr,
713 return ll_rd_track_id(kobj, buf, STATS_TRACK_PPID);
716 static ssize_t stats_track_ppid_store(struct kobject *kobj,
717 struct attribute *attr,
721 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_PPID);
723 LUSTRE_RW_ATTR(stats_track_ppid);
725 static ssize_t stats_track_gid_show(struct kobject *kobj,
726 struct attribute *attr,
729 return ll_rd_track_id(kobj, buf, STATS_TRACK_GID);
732 static ssize_t stats_track_gid_store(struct kobject *kobj,
733 struct attribute *attr,
737 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_GID);
739 LUSTRE_RW_ATTR(stats_track_gid);
741 static ssize_t enable_statahead_fname_show(struct kobject *kobj,
742 struct attribute *attr,
745 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
748 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_enable_statahead_fname);
751 static ssize_t enable_statahead_fname_store(struct kobject *kobj,
752 struct attribute *attr,
756 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
761 rc = kstrtobool(buffer, &val);
765 sbi->ll_enable_statahead_fname = val;
769 LUSTRE_RW_ATTR(enable_statahead_fname);
771 static ssize_t statahead_running_max_show(struct kobject *kobj,
772 struct attribute *attr,
775 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
778 return scnprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_sa_running_max);
781 static ssize_t statahead_running_max_store(struct kobject *kobj,
782 struct attribute *attr,
786 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
791 rc = kstrtoul(buffer, 0, &val);
795 if (val <= LL_SA_RUNNING_MAX) {
796 sbi->ll_sa_running_max = val;
800 CERROR("Bad statahead_running_max value %lu. Valid values "
801 "are in the range [0, %d]\n", val, LL_SA_RUNNING_MAX);
805 LUSTRE_RW_ATTR(statahead_running_max);
807 static ssize_t statahead_batch_max_show(struct kobject *kobj,
808 struct attribute *attr,
811 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
814 return snprintf(buf, 16, "%u\n", sbi->ll_sa_batch_max);
817 static ssize_t statahead_batch_max_store(struct kobject *kobj,
818 struct attribute *attr,
822 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
827 rc = kstrtoul(buffer, 0, &val);
831 if (val > LL_SA_BATCH_MAX) {
832 CWARN("%s: statahead_batch_max value %lu limited to maximum %d\n",
833 sbi->ll_fsname, val, LL_SA_BATCH_MAX);
834 val = LL_SA_BATCH_MAX;
837 sbi->ll_sa_batch_max = val;
840 LUSTRE_RW_ATTR(statahead_batch_max);
842 static ssize_t statahead_max_show(struct kobject *kobj,
843 struct attribute *attr,
846 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
849 return sprintf(buf, "%u\n", sbi->ll_sa_max);
852 static ssize_t statahead_max_store(struct kobject *kobj,
853 struct attribute *attr,
857 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
862 rc = kstrtoul(buffer, 0, &val);
866 if (val > LL_SA_REQ_MAX) {
867 CWARN("%s: statahead_max value %lu limited to maximum %d\n",
868 sbi->ll_fsname, val, LL_SA_REQ_MAX);
872 sbi->ll_sa_max = val;
875 LUSTRE_RW_ATTR(statahead_max);
877 static ssize_t statahead_min_show(struct kobject *kobj,
878 struct attribute *attr,
881 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
884 return scnprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_sa_min);
887 static ssize_t statahead_min_store(struct kobject *kobj,
888 struct attribute *attr,
892 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
897 rc = kstrtoul(buffer, 0, &val);
901 if (val < LL_SA_REQ_MIN)
902 CERROR("%s: bad statahead_min %lu < min %u\n",
903 sbi->ll_fsname, val, LL_SA_REQ_MIN);
904 else if (val > sbi->ll_sa_max)
905 CERROR("%s: bad statahead_min %lu > max %u\n",
906 sbi->ll_fsname, val, sbi->ll_sa_max);
908 sbi->ll_sa_min = val;
912 LUSTRE_RW_ATTR(statahead_min);
914 static ssize_t statahead_timeout_show(struct kobject *kobj,
915 struct attribute *attr,
918 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
921 return scnprintf(buf, PAGE_SIZE, "%lu\n", sbi->ll_sa_timeout);
924 static ssize_t statahead_timeout_store(struct kobject *kobj,
925 struct attribute *attr,
929 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
934 rc = kstrtoul(buffer, 0, &val);
938 sbi->ll_sa_timeout = val;
941 LUSTRE_RW_ATTR(statahead_timeout);
943 static ssize_t statahead_agl_show(struct kobject *kobj,
944 struct attribute *attr,
947 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
950 return scnprintf(buf, PAGE_SIZE, "%u\n",
951 test_bit(LL_SBI_AGL_ENABLED, sbi->ll_flags));
954 static ssize_t statahead_agl_store(struct kobject *kobj,
955 struct attribute *attr,
959 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
964 rc = kstrtobool(buffer, &val);
969 set_bit(LL_SBI_AGL_ENABLED, sbi->ll_flags);
971 clear_bit(LL_SBI_AGL_ENABLED, sbi->ll_flags);
975 LUSTRE_RW_ATTR(statahead_agl);
977 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
979 struct super_block *sb = m->private;
980 struct ll_sb_info *sbi = ll_s2sbi(sb);
982 seq_printf(m, "statahead total: %u\n"
983 "statahead wrong: %u\n"
989 atomic_read(&sbi->ll_sa_total),
990 atomic_read(&sbi->ll_sa_wrong),
991 atomic_read(&sbi->ll_agl_total),
992 atomic_read(&sbi->ll_sa_list_total),
993 atomic_read(&sbi->ll_sa_fname_total),
994 atomic_read(&sbi->ll_sa_hit_total),
995 atomic_read(&sbi->ll_sa_miss_total));
999 static ssize_t ll_statahead_stats_seq_write(struct file *file,
1000 const char __user *buffer,
1001 size_t count, loff_t *off)
1003 struct seq_file *m = file->private_data;
1004 struct super_block *sb = m->private;
1005 struct ll_sb_info *sbi = ll_s2sbi(sb);
1007 atomic_set(&sbi->ll_sa_total, 0);
1008 atomic_set(&sbi->ll_sa_wrong, 0);
1009 atomic_set(&sbi->ll_agl_total, 0);
1010 atomic_set(&sbi->ll_sa_list_total, 0);
1011 atomic_set(&sbi->ll_sa_fname_total, 0);
1012 atomic_set(&sbi->ll_sa_hit_total, 0);
1013 atomic_set(&sbi->ll_sa_miss_total, 0);
1017 LDEBUGFS_SEQ_FOPS(ll_statahead_stats);
1019 static ssize_t lazystatfs_show(struct kobject *kobj,
1020 struct attribute *attr,
1023 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1026 return scnprintf(buf, PAGE_SIZE, "%u\n",
1027 test_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags));
1030 static ssize_t lazystatfs_store(struct kobject *kobj,
1031 struct attribute *attr,
1035 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1040 rc = kstrtobool(buffer, &val);
1045 set_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags);
1047 clear_bit(LL_SBI_LAZYSTATFS, sbi->ll_flags);
1051 LUSTRE_RW_ATTR(lazystatfs);
1053 static ssize_t statfs_max_age_show(struct kobject *kobj, struct attribute *attr,
1056 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1059 return scnprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_statfs_max_age);
1062 static ssize_t statfs_max_age_store(struct kobject *kobj,
1063 struct attribute *attr, const char *buffer,
1066 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1071 rc = kstrtouint(buffer, 10, &val);
1074 if (val > OBD_STATFS_CACHE_MAX_AGE)
1077 sbi->ll_statfs_max_age = val;
1081 LUSTRE_RW_ATTR(statfs_max_age);
1083 static ssize_t statfs_project_show(struct kobject *kobj,
1084 struct attribute *attr,
1087 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1090 return scnprintf(buf, PAGE_SIZE, "%u\n",
1091 test_bit(LL_SBI_STATFS_PROJECT, sbi->ll_flags));
1094 static ssize_t statfs_project_store(struct kobject *kobj,
1095 struct attribute *attr,
1099 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1104 rc = kstrtobool(buffer, &val);
1109 set_bit(LL_SBI_STATFS_PROJECT, sbi->ll_flags);
1111 clear_bit(LL_SBI_STATFS_PROJECT, sbi->ll_flags);
1115 LUSTRE_RW_ATTR(statfs_project);
1117 static ssize_t max_easize_show(struct kobject *kobj,
1118 struct attribute *attr,
1121 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1126 rc = ll_get_max_mdsize(sbi, &ealen);
1130 /* Limit xattr size returned to userspace based on kernel maximum */
1131 return scnprintf(buf, PAGE_SIZE, "%u\n",
1132 ealen > XATTR_SIZE_MAX ? XATTR_SIZE_MAX : ealen);
1134 LUSTRE_RO_ATTR(max_easize);
1137 * Get default_easize.
1139 * \see client_obd::cl_default_mds_easize
1141 * \param[in] m seq_file handle
1142 * \param[in] v unused for single entry
1144 * \retval 0 on success
1145 * \retval negative negated errno on failure
1147 static ssize_t default_easize_show(struct kobject *kobj,
1148 struct attribute *attr,
1151 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1156 rc = ll_get_default_mdsize(sbi, &ealen);
1160 /* Limit xattr size returned to userspace based on kernel maximum */
1161 return scnprintf(buf, PAGE_SIZE, "%u\n",
1162 ealen > XATTR_SIZE_MAX ? XATTR_SIZE_MAX : ealen);
1166 * Set default_easize.
1168 * Range checking on the passed value is handled by
1169 * ll_set_default_mdsize().
1171 * \see client_obd::cl_default_mds_easize
1173 * \param[in] file proc file
1174 * \param[in] buffer string passed from user space
1175 * \param[in] count \a buffer length
1176 * \param[in] off unused for single entry
1178 * \retval positive \a count on success
1179 * \retval negative negated errno on failure
1181 static ssize_t default_easize_store(struct kobject *kobj,
1182 struct attribute *attr,
1186 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1194 rc = kstrtouint(buffer, 10, &val);
1198 rc = ll_set_default_mdsize(sbi, val);
1204 LUSTRE_RW_ATTR(default_easize);
1206 LDEBUGFS_SEQ_FOPS_RO(ll_sbi_flags);
1208 static ssize_t xattr_cache_show(struct kobject *kobj,
1209 struct attribute *attr,
1212 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1215 return sprintf(buf, "%u\n", sbi->ll_xattr_cache_enabled);
1218 static ssize_t xattr_cache_store(struct kobject *kobj,
1219 struct attribute *attr,
1223 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1228 rc = kstrtobool(buffer, &val);
1232 if (val && !test_bit(LL_SBI_XATTR_CACHE, sbi->ll_flags))
1235 sbi->ll_xattr_cache_enabled = val;
1236 sbi->ll_xattr_cache_set = 1;
1240 LUSTRE_RW_ATTR(xattr_cache);
1242 static ssize_t intent_mkdir_show(struct kobject *kobj,
1243 struct attribute *attr, char *buf)
1245 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1248 return scnprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_intent_mkdir_enabled);
1251 static ssize_t intent_mkdir_store(struct kobject *kobj, struct attribute *attr,
1252 const char *buffer, size_t count)
1254 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1259 rc = kstrtobool(buffer, &val);
1263 sbi->ll_intent_mkdir_enabled = val;
1267 LUSTRE_RW_ATTR(intent_mkdir);
1269 static ssize_t tiny_write_show(struct kobject *kobj,
1270 struct attribute *attr,
1273 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1276 return scnprintf(buf, PAGE_SIZE, "%u\n",
1277 test_bit(LL_SBI_TINY_WRITE, sbi->ll_flags));
1280 static ssize_t tiny_write_store(struct kobject *kobj,
1281 struct attribute *attr,
1285 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1290 rc = kstrtobool(buffer, &val);
1294 spin_lock(&sbi->ll_lock);
1296 set_bit(LL_SBI_TINY_WRITE, sbi->ll_flags);
1298 clear_bit(LL_SBI_TINY_WRITE, sbi->ll_flags);
1299 spin_unlock(&sbi->ll_lock);
1303 LUSTRE_RW_ATTR(tiny_write);
1305 static ssize_t unaligned_dio_show(struct kobject *kobj,
1306 struct attribute *attr,
1309 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1312 return scnprintf(buf, PAGE_SIZE, "%u\n",
1313 test_bit(LL_SBI_UNALIGNED_DIO, sbi->ll_flags));
1316 static ssize_t unaligned_dio_store(struct kobject *kobj,
1317 struct attribute *attr,
1321 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1326 rc = kstrtobool(buffer, &val);
1330 spin_lock(&sbi->ll_lock);
1332 set_bit(LL_SBI_UNALIGNED_DIO, sbi->ll_flags);
1334 clear_bit(LL_SBI_UNALIGNED_DIO, sbi->ll_flags);
1335 spin_unlock(&sbi->ll_lock);
1339 LUSTRE_RW_ATTR(unaligned_dio);
1341 static ssize_t parallel_dio_show(struct kobject *kobj,
1342 struct attribute *attr,
1345 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1348 return snprintf(buf, PAGE_SIZE, "%u\n",
1349 test_bit(LL_SBI_PARALLEL_DIO, sbi->ll_flags));
1352 static ssize_t parallel_dio_store(struct kobject *kobj,
1353 struct attribute *attr,
1357 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1362 rc = kstrtobool(buffer, &val);
1366 spin_lock(&sbi->ll_lock);
1368 set_bit(LL_SBI_PARALLEL_DIO, sbi->ll_flags);
1370 clear_bit(LL_SBI_PARALLEL_DIO, sbi->ll_flags);
1371 spin_unlock(&sbi->ll_lock);
1375 LUSTRE_RW_ATTR(parallel_dio);
1377 static ssize_t hybrid_io_show(struct kobject *kobj, struct attribute *attr,
1380 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1383 return snprintf(buf, PAGE_SIZE, "%u\n",
1384 test_bit(LL_SBI_HYBRID_IO, sbi->ll_flags));
1387 static ssize_t hybrid_io_store(struct kobject *kobj, struct attribute *attr,
1388 const char *buffer, size_t count)
1390 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1395 rc = kstrtobool(buffer, &val);
1399 spin_lock(&sbi->ll_lock);
1401 set_bit(LL_SBI_HYBRID_IO, sbi->ll_flags);
1403 clear_bit(LL_SBI_HYBRID_IO, sbi->ll_flags);
1404 spin_unlock(&sbi->ll_lock);
1408 LUSTRE_RW_ATTR(hybrid_io);
1410 static ssize_t max_read_ahead_async_active_show(struct kobject *kobj,
1411 struct attribute *attr,
1414 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1417 return scnprintf(buf, PAGE_SIZE, "%u\n",
1418 sbi->ll_ra_info.ra_async_max_active);
1421 static ssize_t max_read_ahead_async_active_store(struct kobject *kobj,
1422 struct attribute *attr,
1426 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1431 rc = kstrtouint(buffer, 10, &val);
1436 * It doesn't make any sense to make it exceed what
1437 * workqueue could acutally support. This can easily
1438 * over subscripe the cores but Lustre internally
1439 * throttles to avoid those impacts.
1441 if (val > WQ_UNBOUND_MAX_ACTIVE) {
1442 CERROR("%s: cannot set max_read_ahead_async_active=%u larger than %u\n",
1443 sbi->ll_fsname, val, WQ_UNBOUND_MAX_ACTIVE);
1447 spin_lock(&sbi->ll_lock);
1448 sbi->ll_ra_info.ra_async_max_active = val;
1449 spin_unlock(&sbi->ll_lock);
1453 LUSTRE_RW_ATTR(max_read_ahead_async_active);
1455 static ssize_t read_ahead_async_file_threshold_mb_show(struct kobject *kobj,
1456 struct attribute *attr,
1459 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1462 return scnprintf(buf, PAGE_SIZE, "%lu\n", PAGES_TO_MiB(
1463 sbi->ll_ra_info.ra_async_pages_per_file_threshold));
1467 read_ahead_async_file_threshold_mb_store(struct kobject *kobj,
1468 struct attribute *attr,
1469 const char *buffer, size_t count)
1471 unsigned long pages_number;
1472 unsigned long max_ra_per_file;
1473 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1477 rc = kstrtoul(buffer, 10, &pages_number);
1481 pages_number = MiB_TO_PAGES(pages_number);
1482 max_ra_per_file = sbi->ll_ra_info.ra_max_pages_per_file;
1483 if (pages_number < 0 || pages_number > max_ra_per_file) {
1484 CERROR("%s: can't set read_ahead_async_file_threshold_mb=%lu > "
1485 "max_read_readahead_per_file_mb=%lu\n", sbi->ll_fsname,
1486 PAGES_TO_MiB(pages_number),
1487 PAGES_TO_MiB(max_ra_per_file));
1490 sbi->ll_ra_info.ra_async_pages_per_file_threshold = pages_number;
1494 LUSTRE_RW_ATTR(read_ahead_async_file_threshold_mb);
1496 static ssize_t read_ahead_range_kb_show(struct kobject *kobj,
1497 struct attribute *attr, char *buf)
1499 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1502 return snprintf(buf, PAGE_SIZE, "%lu\n",
1503 sbi->ll_ra_info.ra_range_pages << (PAGE_SHIFT - 10));
1507 read_ahead_range_kb_store(struct kobject *kobj,
1508 struct attribute *attr,
1509 const char *buffer, size_t count)
1511 unsigned long pages_number;
1512 unsigned long max_ra_per_file;
1514 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1518 rc = sysfs_memparse(buffer, count, &val, "KiB");
1522 pages_number = val >> PAGE_SHIFT;
1523 /* Disable mmap range read */
1524 if (pages_number == 0)
1527 max_ra_per_file = sbi->ll_ra_info.ra_max_pages_per_file;
1528 if (pages_number > max_ra_per_file ||
1529 pages_number < RA_MIN_MMAP_RANGE_PAGES)
1533 spin_lock(&sbi->ll_lock);
1534 sbi->ll_ra_info.ra_range_pages = pages_number;
1535 spin_unlock(&sbi->ll_lock);
1539 LUSTRE_RW_ATTR(read_ahead_range_kb);
1541 static ssize_t fast_read_show(struct kobject *kobj,
1542 struct attribute *attr,
1545 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1548 return scnprintf(buf, PAGE_SIZE, "%u\n",
1549 test_bit(LL_SBI_FAST_READ, sbi->ll_flags));
1552 static ssize_t fast_read_store(struct kobject *kobj,
1553 struct attribute *attr,
1557 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1562 rc = kstrtobool(buffer, &val);
1566 spin_lock(&sbi->ll_lock);
1568 set_bit(LL_SBI_FAST_READ, sbi->ll_flags);
1570 clear_bit(LL_SBI_FAST_READ, sbi->ll_flags);
1571 spin_unlock(&sbi->ll_lock);
1575 LUSTRE_RW_ATTR(fast_read);
1577 static ssize_t file_heat_show(struct kobject *kobj,
1578 struct attribute *attr,
1581 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1584 return scnprintf(buf, PAGE_SIZE, "%u\n",
1585 test_bit(LL_SBI_FILE_HEAT, sbi->ll_flags));
1588 static ssize_t file_heat_store(struct kobject *kobj,
1589 struct attribute *attr,
1593 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1598 rc = kstrtobool(buffer, &val);
1602 spin_lock(&sbi->ll_lock);
1604 set_bit(LL_SBI_FILE_HEAT, sbi->ll_flags);
1606 clear_bit(LL_SBI_FILE_HEAT, sbi->ll_flags);
1607 spin_unlock(&sbi->ll_lock);
1611 LUSTRE_RW_ATTR(file_heat);
1613 static ssize_t heat_decay_percentage_show(struct kobject *kobj,
1614 struct attribute *attr,
1617 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1620 return scnprintf(buf, PAGE_SIZE, "%u\n",
1621 (sbi->ll_heat_decay_weight * 100 + 128) / 256);
1624 static ssize_t heat_decay_percentage_store(struct kobject *kobj,
1625 struct attribute *attr,
1629 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1634 rc = kstrtoul(buffer, 10, &val);
1638 if (val < 0 || val > 100)
1641 sbi->ll_heat_decay_weight = (val * 256 + 50) / 100;
1645 LUSTRE_RW_ATTR(heat_decay_percentage);
1647 static ssize_t heat_period_second_show(struct kobject *kobj,
1648 struct attribute *attr,
1651 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1654 return scnprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_heat_period_second);
1657 static ssize_t heat_period_second_store(struct kobject *kobj,
1658 struct attribute *attr,
1662 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1667 rc = kstrtoul(buffer, 10, &val);
1674 sbi->ll_heat_period_second = val;
1678 LUSTRE_RW_ATTR(heat_period_second);
1680 static ssize_t opencache_threshold_count_show(struct kobject *kobj,
1681 struct attribute *attr,
1684 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1687 if (sbi->ll_oc_thrsh_count)
1688 return snprintf(buf, PAGE_SIZE, "%u\n",
1689 sbi->ll_oc_thrsh_count);
1691 return snprintf(buf, PAGE_SIZE, "off\n");
1694 static ssize_t opencache_threshold_count_store(struct kobject *kobj,
1695 struct attribute *attr,
1699 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1704 rc = kstrtouint(buffer, 10, &val);
1707 /* also accept "off" to disable and "on" to always cache */
1708 rc = kstrtobool(buffer, &enable);
1713 sbi->ll_oc_thrsh_count = val;
1717 LUSTRE_RW_ATTR(opencache_threshold_count);
1719 static ssize_t opencache_threshold_ms_show(struct kobject *kobj,
1720 struct attribute *attr,
1723 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1726 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_oc_thrsh_ms);
1729 static ssize_t opencache_threshold_ms_store(struct kobject *kobj,
1730 struct attribute *attr,
1734 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1739 rc = kstrtouint(buffer, 10, &val);
1743 sbi->ll_oc_thrsh_ms = val;
1747 LUSTRE_RW_ATTR(opencache_threshold_ms);
1749 static ssize_t opencache_max_ms_show(struct kobject *kobj,
1750 struct attribute *attr,
1753 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1756 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_oc_max_ms);
1759 static ssize_t opencache_max_ms_store(struct kobject *kobj,
1760 struct attribute *attr,
1764 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1769 rc = kstrtouint(buffer, 10, &val);
1773 sbi->ll_oc_max_ms = val;
1777 LUSTRE_RW_ATTR(opencache_max_ms);
1779 static ssize_t inode_cache_show(struct kobject *kobj,
1780 struct attribute *attr,
1783 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1786 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_inode_cache_enabled);
1789 static ssize_t inode_cache_store(struct kobject *kobj,
1790 struct attribute *attr,
1794 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1799 rc = kstrtobool(buffer, &val);
1803 sbi->ll_inode_cache_enabled = val;
1807 LUSTRE_RW_ATTR(inode_cache);
1809 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
1811 struct super_block *sb = m->private;
1812 struct ll_sb_info *sbi = ll_s2sbi(sb);
1813 struct cl_client_cache *cache = sbi->ll_cache;
1817 pages = atomic_long_read(&cache->ccc_unstable_nr);
1818 mb = (pages * PAGE_SIZE) >> 20;
1820 seq_printf(m, "unstable_check: %8d\n"
1821 "unstable_pages: %12ld\n"
1822 "unstable_mb: %8d\n",
1823 cache->ccc_unstable_check, pages, mb);
1827 static ssize_t ll_unstable_stats_seq_write(struct file *file,
1828 const char __user *buffer,
1829 size_t count, loff_t *unused)
1831 struct seq_file *seq = file->private_data;
1832 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
1839 if (count >= sizeof(kernbuf))
1842 if (copy_from_user(kernbuf, buffer, count))
1846 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
1848 rc = kstrtobool_from_user(buffer, count, &val);
1852 /* borrow lru lock to set the value */
1853 spin_lock(&sbi->ll_cache->ccc_lru_lock);
1854 sbi->ll_cache->ccc_unstable_check = val;
1855 spin_unlock(&sbi->ll_cache->ccc_lru_lock);
1860 LDEBUGFS_SEQ_FOPS(ll_unstable_stats);
1862 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
1864 struct super_block *sb = m->private;
1865 struct ll_sb_info *sbi = ll_s2sbi(sb);
1866 struct root_squash_info *squash = &sbi->ll_squash;
1868 seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
1872 static ssize_t ll_root_squash_seq_write(struct file *file,
1873 const char __user *buffer,
1874 size_t count, loff_t *off)
1876 struct seq_file *m = file->private_data;
1877 struct super_block *sb = m->private;
1878 struct ll_sb_info *sbi = ll_s2sbi(sb);
1879 struct root_squash_info *squash = &sbi->ll_squash;
1881 return lprocfs_wr_root_squash(buffer, count, squash, sbi->ll_fsname);
1884 LDEBUGFS_SEQ_FOPS(ll_root_squash);
1886 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
1888 struct super_block *sb = m->private;
1889 struct ll_sb_info *sbi = ll_s2sbi(sb);
1890 struct root_squash_info *squash = &sbi->ll_squash;
1893 spin_lock(&squash->rsi_lock);
1894 if (!list_empty(&squash->rsi_nosquash_nids)) {
1895 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
1896 &squash->rsi_nosquash_nids);
1900 seq_puts(m, "NONE\n");
1902 spin_unlock(&squash->rsi_lock);
1907 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
1908 const char __user *buffer,
1909 size_t count, loff_t *off)
1911 struct seq_file *m = file->private_data;
1912 struct super_block *sb = m->private;
1913 struct ll_sb_info *sbi = ll_s2sbi(sb);
1914 struct root_squash_info *squash = &sbi->ll_squash;
1917 rc = lprocfs_wr_nosquash_nids(buffer, count, squash, sbi->ll_fsname);
1921 ll_compute_rootsquash_state(sbi);
1926 LDEBUGFS_SEQ_FOPS(ll_nosquash_nids);
1928 #if defined(CONFIG_LL_ENCRYPTION)
1929 static ssize_t enable_filename_encryption_show(struct kobject *kobj,
1930 struct attribute *attr,
1933 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1935 struct lustre_sb_info *lsi = sbi->lsi;
1937 return snprintf(buffer, PAGE_SIZE, "%u\n",
1938 lsi->lsi_flags & LSI_FILENAME_ENC ? 1 : 0);
1941 static ssize_t enable_filename_encryption_store(struct kobject *kobj,
1942 struct attribute *attr,
1946 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1948 struct lustre_sb_info *lsi = sbi->lsi;
1952 rc = kstrtobool(buffer, &val);
1957 if (!ll_sbi_has_name_encrypt(sbi)) {
1958 /* server does not support name encryption,
1959 * so force it to NULL on client
1961 CDEBUG(D_SEC, "%s: server does not support name encryption\n",
1963 lsi->lsi_flags &= ~LSI_FILENAME_ENC;
1967 lsi->lsi_flags |= LSI_FILENAME_ENC;
1969 lsi->lsi_flags &= ~LSI_FILENAME_ENC;
1975 LUSTRE_RW_ATTR(enable_filename_encryption);
1976 #endif /* CONFIG_LL_ENCRYPTION */
1978 #if defined(CONFIG_LL_ENCRYPTION) || defined(HAVE_LUSTRE_CRYPTO)
1979 static ssize_t filename_enc_use_old_base64_show(struct kobject *kobj,
1980 struct attribute *attr,
1983 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1985 struct lustre_sb_info *lsi = sbi->lsi;
1987 return snprintf(buffer, PAGE_SIZE, "%u\n",
1988 lsi->lsi_flags & LSI_FILENAME_ENC_B64_OLD_CLI ? 1 : 0);
1991 static ssize_t filename_enc_use_old_base64_store(struct kobject *kobj,
1992 struct attribute *attr,
1996 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1998 struct lustre_sb_info *lsi = sbi->lsi;
2002 rc = kstrtobool(buffer, &val);
2007 if (!ll_sbi_has_name_encrypt(sbi)) {
2008 /* server does not support name encryption,
2009 * so force it to NULL on client
2012 "%s: server does not support name encryption\n",
2014 lsi->lsi_flags &= ~LSI_FILENAME_ENC_B64_OLD_CLI;
2018 lsi->lsi_flags |= LSI_FILENAME_ENC_B64_OLD_CLI;
2020 lsi->lsi_flags &= ~LSI_FILENAME_ENC_B64_OLD_CLI;
2026 LUSTRE_RW_ATTR(filename_enc_use_old_base64);
2027 #endif /* CONFIG_LL_ENCRYPTION || HAVE_LUSTRE_CRYPTO */
2029 static int ll_pcc_seq_show(struct seq_file *m, void *v)
2031 struct super_block *sb = m->private;
2032 struct ll_sb_info *sbi = ll_s2sbi(sb);
2034 return pcc_super_dump(&sbi->ll_pcc_super, m);
2037 static ssize_t ll_pcc_seq_write(struct file *file, const char __user *buffer,
2038 size_t count, loff_t *off)
2040 struct seq_file *m = file->private_data;
2041 struct super_block *sb = m->private;
2042 struct ll_sb_info *sbi = ll_s2sbi(sb);
2046 if (count >= LPROCFS_WR_PCC_MAX_CMD)
2049 if (!(exp_connect_flags2(sbi->ll_md_exp) & OBD_CONNECT2_PCC))
2052 OBD_ALLOC(kernbuf, count + 1);
2053 if (kernbuf == NULL)
2056 if (copy_from_user(kernbuf, buffer, count))
2057 GOTO(out_free_kernbuff, rc = -EFAULT);
2059 rc = pcc_cmd_handle(kernbuf, count, &sbi->ll_pcc_super);
2061 OBD_FREE(kernbuf, count + 1);
2062 return rc ? rc : count;
2064 LDEBUGFS_SEQ_FOPS(ll_pcc);
2066 struct ldebugfs_vars lprocfs_llite_obd_vars[] = {
2068 .fops = &ll_site_stats_fops },
2069 { .name = "max_cached_mb",
2070 .fops = &ll_max_cached_mb_fops },
2071 { .name = "statahead_stats",
2072 .fops = &ll_statahead_stats_fops },
2073 { .name = "unstable_stats",
2074 .fops = &ll_unstable_stats_fops },
2075 { .name = "sbi_flags",
2076 .fops = &ll_sbi_flags_fops },
2077 { .name = "root_squash",
2078 .fops = &ll_root_squash_fops },
2079 { .name = "nosquash_nids",
2080 .fops = &ll_nosquash_nids_fops },
2082 .fops = &ll_pcc_fops, },
2086 #define MAX_STRING_SIZE 128
2088 static struct attribute *llite_attrs[] = {
2089 &lustre_attr_blocksize.attr,
2090 &lustre_attr_stat_blocksize.attr,
2091 &lustre_attr_kbytestotal.attr,
2092 &lustre_attr_kbytesfree.attr,
2093 &lustre_attr_kbytesavail.attr,
2094 &lustre_attr_filestotal.attr,
2095 &lustre_attr_filesfree.attr,
2096 &lustre_attr_client_type.attr,
2097 &lustre_attr_foreign_symlink_enable.attr,
2098 &lustre_attr_foreign_symlink_prefix.attr,
2099 &lustre_attr_foreign_symlink_upcall.attr,
2100 &lustre_attr_foreign_symlink_upcall_info.attr,
2101 &lustre_attr_fstype.attr,
2102 &lustre_attr_uuid.attr,
2103 &lustre_attr_checksums.attr,
2104 &lustre_attr_checksum_pages.attr,
2105 &lustre_attr_max_read_ahead_mb.attr,
2106 &lustre_attr_max_read_ahead_per_file_mb.attr,
2107 &lustre_attr_max_read_ahead_whole_mb.attr,
2108 &lustre_attr_max_read_ahead_async_active.attr,
2109 &lustre_attr_read_ahead_async_file_threshold_mb.attr,
2110 &lustre_attr_read_ahead_range_kb.attr,
2111 &lustre_attr_stats_track_pid.attr,
2112 &lustre_attr_stats_track_ppid.attr,
2113 &lustre_attr_stats_track_gid.attr,
2114 &lustre_attr_enable_statahead_fname.attr,
2115 &lustre_attr_statahead_running_max.attr,
2116 &lustre_attr_statahead_batch_max.attr,
2117 &lustre_attr_statahead_max.attr,
2118 &lustre_attr_statahead_min.attr,
2119 &lustre_attr_statahead_timeout.attr,
2120 &lustre_attr_statahead_agl.attr,
2121 &lustre_attr_lazystatfs.attr,
2122 &lustre_attr_statfs_max_age.attr,
2123 &lustre_attr_statfs_project.attr,
2124 &lustre_attr_max_easize.attr,
2125 &lustre_attr_default_easize.attr,
2126 &lustre_attr_xattr_cache.attr,
2127 &lustre_attr_intent_mkdir.attr,
2128 &lustre_attr_fast_read.attr,
2129 &lustre_attr_tiny_write.attr,
2130 &lustre_attr_parallel_dio.attr,
2131 &lustre_attr_unaligned_dio.attr,
2132 &lustre_attr_hybrid_io.attr,
2133 &lustre_attr_file_heat.attr,
2134 &lustre_attr_heat_decay_percentage.attr,
2135 &lustre_attr_heat_period_second.attr,
2136 &lustre_attr_opencache_threshold_count.attr,
2137 &lustre_attr_opencache_threshold_ms.attr,
2138 &lustre_attr_opencache_max_ms.attr,
2139 &lustre_attr_inode_cache.attr,
2140 #ifdef CONFIG_LL_ENCRYPTION
2141 &lustre_attr_enable_filename_encryption.attr,
2143 #if defined(CONFIG_LL_ENCRYPTION) || defined(HAVE_LUSTRE_CRYPTO)
2144 &lustre_attr_filename_enc_use_old_base64.attr,
2149 KOBJ_ATTRIBUTE_GROUPS(llite); /* creates llite_groups */
2151 static void sbi_kobj_release(struct kobject *kobj)
2153 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
2155 complete(&sbi->ll_kobj_unregister);
2158 static struct kobj_type sbi_ktype = {
2159 .default_groups = KOBJ_ATTR_GROUPS(llite),
2160 .sysfs_ops = &lustre_sysfs_ops,
2161 .release = sbi_kobj_release,
2164 static const struct llite_file_opcode {
2166 enum lprocfs_counter_config lfo_config;
2167 const char *lfo_opname;
2168 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
2169 /* file operation */
2170 { LPROC_LL_READ_BYTES, LPROCFS_TYPE_BYTES_FULL, "read_bytes" },
2171 { LPROC_LL_WRITE_BYTES, LPROCFS_TYPE_BYTES_FULL, "write_bytes" },
2172 { LPROC_LL_READ, LPROCFS_TYPE_LATENCY, "read" },
2173 { LPROC_LL_WRITE, LPROCFS_TYPE_LATENCY, "write" },
2174 { LPROC_LL_IOCTL, LPROCFS_TYPE_REQS, "ioctl" },
2175 { LPROC_LL_OPEN, LPROCFS_TYPE_LATENCY, "open" },
2176 { LPROC_LL_RELEASE, LPROCFS_TYPE_LATENCY, "close" },
2177 { LPROC_LL_MMAP, LPROCFS_TYPE_LATENCY, "mmap" },
2178 { LPROC_LL_FAULT, LPROCFS_TYPE_LATENCY, "page_fault" },
2179 { LPROC_LL_MKWRITE, LPROCFS_TYPE_LATENCY, "page_mkwrite" },
2180 { LPROC_LL_LLSEEK, LPROCFS_TYPE_LATENCY, "seek" },
2181 { LPROC_LL_FSYNC, LPROCFS_TYPE_LATENCY, "fsync" },
2182 { LPROC_LL_READDIR, LPROCFS_TYPE_LATENCY, "readdir" },
2183 { LPROC_LL_INODE_OCOUNT, LPROCFS_TYPE_REQS | LPROCFS_CNTR_AVGMINMAX |
2184 LPROCFS_CNTR_STDDEV, "opencount" },
2185 { LPROC_LL_INODE_OPCLTM, LPROCFS_TYPE_LATENCY, "openclosetime" },
2186 /* inode operation */
2187 { LPROC_LL_SETATTR, LPROCFS_TYPE_LATENCY, "setattr" },
2188 { LPROC_LL_TRUNC, LPROCFS_TYPE_LATENCY, "truncate" },
2189 { LPROC_LL_FLOCK, LPROCFS_TYPE_LATENCY, "flock" },
2190 { LPROC_LL_GETATTR, LPROCFS_TYPE_LATENCY, "getattr" },
2191 { LPROC_LL_FALLOCATE, LPROCFS_TYPE_LATENCY, "fallocate"},
2192 /* dir inode operation */
2193 { LPROC_LL_CREATE, LPROCFS_TYPE_LATENCY, "create" },
2194 { LPROC_LL_LINK, LPROCFS_TYPE_LATENCY, "link" },
2195 { LPROC_LL_UNLINK, LPROCFS_TYPE_LATENCY, "unlink" },
2196 { LPROC_LL_SYMLINK, LPROCFS_TYPE_LATENCY, "symlink" },
2197 { LPROC_LL_MKDIR, LPROCFS_TYPE_LATENCY, "mkdir" },
2198 { LPROC_LL_RMDIR, LPROCFS_TYPE_LATENCY, "rmdir" },
2199 { LPROC_LL_MKNOD, LPROCFS_TYPE_LATENCY, "mknod" },
2200 { LPROC_LL_RENAME, LPROCFS_TYPE_LATENCY, "rename" },
2201 /* special inode operation */
2202 { LPROC_LL_STATFS, LPROCFS_TYPE_LATENCY, "statfs" },
2203 { LPROC_LL_SETXATTR, LPROCFS_TYPE_LATENCY, "setxattr" },
2204 { LPROC_LL_GETXATTR, LPROCFS_TYPE_LATENCY, "getxattr" },
2205 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REQS, "getxattr_hits" },
2206 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_LATENCY, "listxattr" },
2207 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_LATENCY, "removexattr" },
2208 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_LATENCY, "inode_permission" },
2211 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, long count)
2216 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
2217 lprocfs_counter_add(sbi->ll_stats, op, count);
2218 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
2219 sbi->ll_stats_track_id == current->pid)
2220 lprocfs_counter_add(sbi->ll_stats, op, count);
2221 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
2222 sbi->ll_stats_track_id == current->real_parent->pid)
2223 lprocfs_counter_add(sbi->ll_stats, op, count);
2224 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
2225 sbi->ll_stats_track_id ==
2226 from_kgid(&init_user_ns, current_gid()))
2227 lprocfs_counter_add(sbi->ll_stats, op, count);
2229 EXPORT_SYMBOL(ll_stats_ops_tally);
2231 static const char *const ra_stat_string[] = {
2232 [RA_STAT_HIT] = "hits",
2233 [RA_STAT_MISS] = "misses",
2234 [RA_STAT_DISTANT_READPAGE] = "readpage_not_consecutive",
2235 [RA_STAT_MISS_IN_WINDOW] = "miss_inside_window",
2236 [RA_STAT_FAILED_GRAB_PAGE] = "failed_grab_cache_page",
2237 [RA_STAT_FAILED_MATCH] = "failed_lock_match",
2238 [RA_STAT_DISCARDED] = "read_but_discarded",
2239 [RA_STAT_ZERO_LEN] = "zero_length_file",
2240 [RA_STAT_ZERO_WINDOW] = "zero_size_window",
2241 [RA_STAT_EOF] = "readahead_to_eof",
2242 [RA_STAT_MAX_IN_FLIGHT] = "hit_max_readahead_issue",
2243 [RA_STAT_WRONG_GRAB_PAGE] = "wrong_page_from_grab_cache_page",
2244 [RA_STAT_FAILED_REACH_END] = "failed_to_reach_end",
2245 [RA_STAT_ASYNC] = "async_readahead",
2246 [RA_STAT_FAILED_FAST_READ] = "failed_to_fast_read",
2247 [RA_STAT_MMAP_RANGE_READ] = "mmap_range_read",
2248 [RA_STAT_READAHEAD_PAGES] = "readahead_pages"
2251 int ll_debugfs_register_super(struct super_block *sb, const char *name)
2253 struct lustre_sb_info *lsi = s2lsi(sb);
2254 struct ll_sb_info *sbi = ll_s2sbi(sb);
2260 if (IS_ERR_OR_NULL(llite_root))
2263 sbi->ll_debugfs_entry = debugfs_create_dir(name, llite_root);
2264 ldebugfs_add_vars(sbi->ll_debugfs_entry, lprocfs_llite_obd_vars, sb);
2266 debugfs_create_file("dump_page_cache", 0444, sbi->ll_debugfs_entry, sbi,
2267 &vvp_dump_pgcache_file_ops);
2269 debugfs_create_file("extents_stats", 0644, sbi->ll_debugfs_entry, sbi,
2270 &ll_rw_extents_stats_fops);
2272 debugfs_create_file("extents_stats_per_process", 0644,
2273 sbi->ll_debugfs_entry, sbi,
2274 &ll_rw_extents_stats_pp_fops);
2276 debugfs_create_file("offset_stats", 0644, sbi->ll_debugfs_entry, sbi,
2277 &ll_rw_offset_stats_fops);
2279 /* File operations stats */
2280 sbi->ll_stats = lprocfs_stats_alloc(LPROC_LL_FILE_OPCODES,
2281 LPROCFS_STATS_FLAG_NONE);
2282 if (sbi->ll_stats == NULL)
2283 GOTO(out_debugfs, err = -ENOMEM);
2285 /* do counter init */
2286 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++)
2287 lprocfs_counter_init(sbi->ll_stats,
2288 llite_opcode_table[id].lfo_opcode,
2289 llite_opcode_table[id].lfo_config,
2290 llite_opcode_table[id].lfo_opname);
2292 debugfs_create_file("stats", 0644, sbi->ll_debugfs_entry,
2293 sbi->ll_stats, &ldebugfs_stats_seq_fops);
2295 sbi->ll_ra_stats = lprocfs_stats_alloc(ARRAY_SIZE(ra_stat_string),
2296 LPROCFS_STATS_FLAG_NONE);
2297 if (sbi->ll_ra_stats == NULL)
2298 GOTO(out_stats, err = -ENOMEM);
2300 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++) {
2301 if (id == RA_STAT_READAHEAD_PAGES)
2302 lprocfs_counter_init(sbi->ll_ra_stats, id,
2303 LPROCFS_TYPE_PAGES |
2304 LPROCFS_CNTR_AVGMINMAX,
2305 ra_stat_string[id]);
2307 lprocfs_counter_init(sbi->ll_ra_stats, id,
2309 ra_stat_string[id]);
2312 debugfs_create_file("read_ahead_stats", 0644, sbi->ll_debugfs_entry,
2313 sbi->ll_ra_stats, &ldebugfs_stats_seq_fops);
2316 /* Yes we also register sysfs mount kset here as well */
2317 sbi->ll_kset.kobj.parent = llite_kobj;
2318 sbi->ll_kset.kobj.ktype = &sbi_ktype;
2319 init_completion(&sbi->ll_kobj_unregister);
2320 err = kobject_set_name(&sbi->ll_kset.kobj, "%s", name);
2322 GOTO(out_ra_stats, err);
2324 err = kset_register(&sbi->ll_kset);
2326 GOTO(out_ra_stats, err);
2328 lsi->lsi_kobj = kobject_get(&sbi->ll_kset.kobj);
2332 lprocfs_stats_free(&sbi->ll_ra_stats);
2334 lprocfs_stats_free(&sbi->ll_stats);
2336 debugfs_remove_recursive(sbi->ll_debugfs_entry);
2341 void ll_debugfs_unregister_super(struct super_block *sb)
2343 struct lustre_sb_info *lsi = s2lsi(sb);
2344 struct ll_sb_info *sbi = ll_s2sbi(sb);
2346 debugfs_remove_recursive(sbi->ll_debugfs_entry);
2349 sysfs_remove_link(&sbi->ll_kset.kobj,
2350 sbi->ll_dt_obd->obd_type->typ_name);
2353 sysfs_remove_link(&sbi->ll_kset.kobj,
2354 sbi->ll_md_obd->obd_type->typ_name);
2356 kobject_put(lsi->lsi_kobj);
2358 kset_unregister(&sbi->ll_kset);
2359 wait_for_completion(&sbi->ll_kobj_unregister);
2361 lprocfs_stats_free(&sbi->ll_ra_stats);
2362 lprocfs_stats_free(&sbi->ll_stats);
2364 #undef MAX_STRING_SIZE
2366 static void ll_display_extents_info(struct ll_rw_extents_info *rw_extents,
2367 struct seq_file *seq, int which)
2369 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
2370 unsigned long start, end, r, w;
2371 char *unitp = "KMGTPEZY";
2373 struct per_process_info *pp_info;
2375 pp_info = &rw_extents->pp_extents[which];
2380 for (i = 0; i < LL_HIST_MAX; i++) {
2381 read_tot += pp_info->pp_r_hist.oh_buckets[i];
2382 write_tot += pp_info->pp_w_hist.oh_buckets[i];
2385 for (i = 0; i < LL_HIST_MAX; i++) {
2386 r = pp_info->pp_r_hist.oh_buckets[i];
2387 w = pp_info->pp_w_hist.oh_buckets[i];
2390 end = 1 << (i + LL_HIST_START - units);
2391 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4u %4u | "
2392 "%14lu %4u %4u\n", start, *unitp, end, *unitp,
2393 (i == LL_HIST_MAX - 1) ? '+' : ' ',
2394 r, pct(r, read_tot), pct(read_cum, read_tot),
2395 w, pct(w, write_tot), pct(write_cum, write_tot));
2397 if (start == (1 << 10)) {
2402 if (read_cum == read_tot && write_cum == write_tot)
2407 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
2409 struct ll_sb_info *sbi = seq->private;
2410 struct ll_rw_extents_info *rw_extents = sbi->ll_rw_extents_info;
2413 if (!sbi->ll_rw_stats_on || !rw_extents) {
2414 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
2418 spin_lock(&sbi->ll_pp_extent_lock);
2419 lprocfs_stats_header(seq, ktime_get_real(), rw_extents->pp_init, 25,
2421 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
2422 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
2423 "extents", "calls", "%", "cum%", "calls", "%", "cum%");
2425 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
2426 if (rw_extents->pp_extents[k].pid != 0) {
2427 seq_printf(seq, "\nPID: %d\n",
2428 rw_extents->pp_extents[k].pid);
2429 ll_display_extents_info(rw_extents, seq, k);
2432 spin_unlock(&sbi->ll_pp_extent_lock);
2436 static int alloc_rw_stats_info(struct ll_sb_info *sbi)
2438 struct ll_rw_extents_info *rw_extents;
2439 struct ll_rw_process_info *offset;
2440 struct ll_rw_process_info *process;
2443 OBD_ALLOC(rw_extents, sizeof(*rw_extents));
2447 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
2448 spin_lock_init(&rw_extents->pp_extents[i].pp_r_hist.oh_lock);
2449 spin_lock_init(&rw_extents->pp_extents[i].pp_w_hist.oh_lock);
2451 rw_extents->pp_init = ktime_get_real();
2453 spin_lock(&sbi->ll_pp_extent_lock);
2454 if (!sbi->ll_rw_extents_info)
2455 sbi->ll_rw_extents_info = rw_extents;
2456 spin_unlock(&sbi->ll_pp_extent_lock);
2457 /* another writer allocated the struct before we got the lock */
2458 if (sbi->ll_rw_extents_info != rw_extents)
2459 OBD_FREE(rw_extents, sizeof(*rw_extents));
2461 OBD_ALLOC(process, sizeof(*process) * LL_PROCESS_HIST_MAX);
2463 GOTO(out, rc = -ENOMEM);
2464 OBD_ALLOC(offset, sizeof(*offset) * LL_OFFSET_HIST_MAX);
2466 GOTO(out_free, rc = -ENOMEM);
2468 spin_lock(&sbi->ll_process_lock);
2469 if (!sbi->ll_rw_process_info)
2470 sbi->ll_rw_process_info = process;
2471 if (!sbi->ll_rw_offset_info)
2472 sbi->ll_rw_offset_info = offset;
2473 spin_unlock(&sbi->ll_process_lock);
2474 sbi->ll_process_stats_init = ktime_get_real();
2476 /* another writer allocated the structs before we got the lock */
2477 if (sbi->ll_rw_offset_info != offset)
2478 OBD_FREE(offset, sizeof(*offset) * LL_OFFSET_HIST_MAX);
2479 if (sbi->ll_rw_process_info != process) {
2481 OBD_FREE(process, sizeof(*process) * LL_PROCESS_HIST_MAX);
2488 void ll_free_rw_stats_info(struct ll_sb_info *sbi)
2490 if (sbi->ll_rw_extents_info) {
2491 OBD_FREE(sbi->ll_rw_extents_info,
2492 sizeof(*sbi->ll_rw_extents_info));
2493 sbi->ll_rw_extents_info = NULL;
2495 if (sbi->ll_rw_offset_info) {
2496 OBD_FREE(sbi->ll_rw_offset_info,
2497 sizeof(*sbi->ll_rw_offset_info) * LL_OFFSET_HIST_MAX);
2498 sbi->ll_rw_offset_info = NULL;
2500 if (sbi->ll_rw_process_info) {
2501 OBD_FREE(sbi->ll_rw_process_info,
2502 sizeof(*sbi->ll_rw_process_info) * LL_PROCESS_HIST_MAX);
2503 sbi->ll_rw_process_info = NULL;
2507 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
2508 const char __user *buf,
2509 size_t len, loff_t *off)
2511 struct seq_file *seq = file->private_data;
2512 struct ll_sb_info *sbi = seq->private;
2513 struct ll_rw_extents_info *rw_extents;
2520 value = ll_stats_pid_write(buf, len);
2523 sbi->ll_rw_stats_on = 0;
2525 if (!sbi->ll_rw_extents_info) {
2526 int rc = alloc_rw_stats_info(sbi);
2531 sbi->ll_rw_stats_on = 1;
2535 spin_lock(&sbi->ll_pp_extent_lock);
2536 rw_extents = sbi->ll_rw_extents_info;
2538 rw_extents->pp_init = ktime_get_real();
2539 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
2540 rw_extents->pp_extents[i].pid = 0;
2541 lprocfs_oh_clear(&rw_extents->pp_extents[i].pp_r_hist);
2542 lprocfs_oh_clear(&rw_extents->pp_extents[i].pp_w_hist);
2545 spin_unlock(&sbi->ll_pp_extent_lock);
2550 LDEBUGFS_SEQ_FOPS(ll_rw_extents_stats_pp);
2552 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
2554 struct ll_sb_info *sbi = seq->private;
2555 struct ll_rw_extents_info *rw_extents = sbi->ll_rw_extents_info;
2557 if (!sbi->ll_rw_stats_on || !rw_extents) {
2558 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
2562 spin_lock(&sbi->ll_lock);
2563 lprocfs_stats_header(seq, ktime_get_real(), rw_extents->pp_init, 25,
2566 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
2567 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
2568 "extents", "calls", "%", "cum%",
2569 "calls", "%", "cum%");
2571 ll_display_extents_info(rw_extents, seq, LL_PROCESS_HIST_MAX);
2572 spin_unlock(&sbi->ll_lock);
2577 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
2578 const char __user *buf,
2579 size_t len, loff_t *off)
2581 struct seq_file *seq = file->private_data;
2582 struct ll_sb_info *sbi = seq->private;
2583 struct ll_rw_extents_info *rw_extents;
2590 value = ll_stats_pid_write(buf, len);
2593 sbi->ll_rw_stats_on = 0;
2595 if (!sbi->ll_rw_extents_info) {
2596 int rc = alloc_rw_stats_info(sbi);
2601 sbi->ll_rw_stats_on = 1;
2604 spin_lock(&sbi->ll_pp_extent_lock);
2605 rw_extents = sbi->ll_rw_extents_info;
2607 rw_extents->pp_init = ktime_get_real();
2608 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
2609 rw_extents->pp_extents[i].pid = 0;
2610 lprocfs_oh_clear(&rw_extents->pp_extents[i].pp_r_hist);
2611 lprocfs_oh_clear(&rw_extents->pp_extents[i].pp_w_hist);
2614 spin_unlock(&sbi->ll_pp_extent_lock);
2619 LDEBUGFS_SEQ_FOPS(ll_rw_extents_stats);
2621 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
2622 struct ll_file_data *file, loff_t pos,
2623 size_t count, int rw)
2626 struct ll_rw_process_info *process;
2627 struct ll_rw_process_info *offset;
2628 int *off_count = &sbi->ll_rw_offset_entry_count;
2629 int *process_count = &sbi->ll_offset_process_count;
2630 struct ll_rw_extents_info *rw_extents;
2632 if (!sbi->ll_rw_stats_on)
2635 spin_lock(&sbi->ll_pp_extent_lock);
2636 rw_extents = sbi->ll_rw_extents_info;
2638 spin_unlock(&sbi->ll_pp_extent_lock);
2642 /* Extent statistics */
2643 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
2644 if (rw_extents->pp_extents[i].pid == pid) {
2652 sbi->ll_extent_process_count =
2653 (sbi->ll_extent_process_count + 1) %
2654 LL_PROCESS_HIST_MAX;
2655 cur = sbi->ll_extent_process_count;
2656 rw_extents->pp_extents[cur].pid = pid;
2657 lprocfs_oh_clear(&rw_extents->pp_extents[cur].pp_r_hist);
2658 lprocfs_oh_clear(&rw_extents->pp_extents[cur].pp_w_hist);
2661 for (i = 0; (count >= 1 << (LL_HIST_START + i)) &&
2662 (i < (LL_HIST_MAX - 1)); i++);
2664 rw_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
2665 rw_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
2667 rw_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
2668 rw_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
2670 spin_unlock(&sbi->ll_pp_extent_lock);
2672 spin_lock(&sbi->ll_process_lock);
2673 process = sbi->ll_rw_process_info;
2674 offset = sbi->ll_rw_offset_info;
2675 if (!process || !offset)
2678 /* Offset statistics */
2679 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
2680 if (process[i].rw_pid == pid) {
2681 if (process[i].rw_last_file != file) {
2682 process[i].rw_range_start = pos;
2683 process[i].rw_last_file_pos = pos + count;
2684 process[i].rw_smallest_extent = count;
2685 process[i].rw_largest_extent = count;
2686 process[i].rw_offset = 0;
2687 process[i].rw_last_file = file;
2690 if (process[i].rw_last_file_pos != pos) {
2692 (*off_count + 1) % LL_OFFSET_HIST_MAX;
2693 offset[*off_count].rw_op = process[i].rw_op;
2694 offset[*off_count].rw_pid = pid;
2695 offset[*off_count].rw_range_start =
2696 process[i].rw_range_start;
2697 offset[*off_count].rw_range_end =
2698 process[i].rw_last_file_pos;
2699 offset[*off_count].rw_smallest_extent =
2700 process[i].rw_smallest_extent;
2701 offset[*off_count].rw_largest_extent =
2702 process[i].rw_largest_extent;
2703 offset[*off_count].rw_offset =
2704 process[i].rw_offset;
2705 process[i].rw_op = rw;
2706 process[i].rw_range_start = pos;
2707 process[i].rw_smallest_extent = count;
2708 process[i].rw_largest_extent = count;
2709 process[i].rw_offset = pos -
2710 process[i].rw_last_file_pos;
2712 if (process[i].rw_smallest_extent > count)
2713 process[i].rw_smallest_extent = count;
2714 if (process[i].rw_largest_extent < count)
2715 process[i].rw_largest_extent = count;
2716 process[i].rw_last_file_pos = pos + count;
2720 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
2721 process[*process_count].rw_pid = pid;
2722 process[*process_count].rw_op = rw;
2723 process[*process_count].rw_range_start = pos;
2724 process[*process_count].rw_last_file_pos = pos + count;
2725 process[*process_count].rw_smallest_extent = count;
2726 process[*process_count].rw_largest_extent = count;
2727 process[*process_count].rw_offset = 0;
2728 process[*process_count].rw_last_file = file;
2731 spin_unlock(&sbi->ll_process_lock);
2734 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
2736 struct ll_sb_info *sbi = seq->private;
2737 struct ll_rw_process_info *offset;
2738 struct ll_rw_process_info *process;
2741 if (!sbi->ll_rw_stats_on) {
2743 "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
2747 spin_lock(&sbi->ll_process_lock);
2748 lprocfs_stats_header(seq, ktime_get_real(), sbi->ll_process_stats_init,
2750 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
2751 "R/W", "PID", "RANGE START", "RANGE END",
2752 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
2754 /* We stored the discontiguous offsets here; print them first */
2755 offset = sbi->ll_rw_offset_info;
2756 for (i = 0; offset && i < LL_OFFSET_HIST_MAX; i++) {
2757 if (offset[i].rw_pid != 0)
2759 "%3c %10d %14llu %14llu %17lu %17lu %14lld\n",
2760 offset[i].rw_op == READ ? 'R' : 'W',
2762 offset[i].rw_range_start,
2763 offset[i].rw_range_end,
2764 (unsigned long)offset[i].rw_smallest_extent,
2765 (unsigned long)offset[i].rw_largest_extent,
2766 offset[i].rw_offset);
2769 /* Then print the current offsets for each process */
2770 process = sbi->ll_rw_process_info;
2771 for (i = 0; process && i < LL_PROCESS_HIST_MAX; i++) {
2772 if (process[i].rw_pid != 0)
2774 "%3c %10d %14llu %14llu %17lu %17lu %14lld\n",
2775 process[i].rw_op == READ ? 'R' : 'W',
2777 process[i].rw_range_start,
2778 process[i].rw_last_file_pos,
2779 (unsigned long)process[i].rw_smallest_extent,
2780 (unsigned long)process[i].rw_largest_extent,
2781 process[i].rw_offset);
2783 spin_unlock(&sbi->ll_process_lock);
2788 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
2789 const char __user *buf,
2790 size_t len, loff_t *off)
2792 struct seq_file *seq = file->private_data;
2793 struct ll_sb_info *sbi = seq->private;
2799 value = ll_stats_pid_write(buf, len);
2802 sbi->ll_rw_stats_on = 0;
2804 if (!sbi->ll_rw_process_info || !sbi->ll_rw_offset_info) {
2805 int rc = alloc_rw_stats_info(sbi);
2810 sbi->ll_rw_stats_on = 1;
2813 spin_lock(&sbi->ll_process_lock);
2814 sbi->ll_offset_process_count = 0;
2815 sbi->ll_rw_offset_entry_count = 0;
2816 sbi->ll_process_stats_init = ktime_get_real();
2817 if (sbi->ll_rw_process_info)
2818 memset(sbi->ll_rw_process_info, 0,
2819 sizeof(struct ll_rw_process_info) * LL_PROCESS_HIST_MAX);
2820 if (sbi->ll_rw_offset_info)
2821 memset(sbi->ll_rw_offset_info, 0,
2822 sizeof(struct ll_rw_process_info) * LL_OFFSET_HIST_MAX);
2823 spin_unlock(&sbi->ll_process_lock);
2828 LDEBUGFS_SEQ_FOPS(ll_rw_offset_stats);