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);
78 if (IS_ERR_OR_NULL(llite_root)) {
79 rc = llite_root ? PTR_ERR(llite_root) : -ENOMEM;
82 kobject_put(llite_kobj);
89 void llite_tunables_unregister(void)
91 kobject_put(llite_kobj);
95 /* <debugfs>/lustre/llite mount point registration */
96 static const struct file_operations ll_rw_extents_stats_fops;
97 static const struct file_operations ll_rw_extents_stats_pp_fops;
98 static const struct file_operations ll_rw_offset_stats_fops;
101 * ll_stats_pid_write() - Determine if stats collection should be enabled
102 * @buf: Buffer containing the data written
103 * @len: Number of bytes in the buffer
105 * Several proc files begin collecting stats when a value is written, and stop
106 * collecting when either '0' or 'disable' is written. This function checks the
107 * written value to see if collection should be enabled or disabled.
109 * Return: If '0' or 'disable' is provided, 0 is returned. If the text
110 * equivalent of a number is written, that number is returned. Otherwise,
111 * 1 is returned. Non-zero return values indicate collection should be enabled.
113 static s64 ll_stats_pid_write(const char __user *buf, size_t len)
115 unsigned long long value = 1;
119 rc = kstrtoull_from_user(buf, len, 0, &value);
120 if (rc < 0 && len < sizeof(kernbuf)) {
121 if (copy_from_user(kernbuf, buf, len))
125 if (kernbuf[len - 1] == '\n')
126 kernbuf[len - 1] = 0;
128 if (strncasecmp(kernbuf, "disable", 7) == 0)
135 static ssize_t blocksize_show(struct kobject *kobj, struct attribute *attr,
138 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
140 struct obd_statfs osfs;
143 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
147 return sprintf(buf, "%u\n", osfs.os_bsize);
149 LUSTRE_RO_ATTR(blocksize);
151 static ssize_t stat_blocksize_show(struct kobject *kobj, struct attribute *attr,
154 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
157 return sprintf(buf, "%u\n", sbi->ll_stat_blksize);
160 static ssize_t stat_blocksize_store(struct kobject *kobj,
161 struct attribute *attr,
165 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
170 rc = kstrtouint(buffer, 10, &val);
174 if (val != 0 && (val < PAGE_SIZE || (val & (val - 1))) != 0)
177 sbi->ll_stat_blksize = val;
181 LUSTRE_RW_ATTR(stat_blocksize);
183 static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
186 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
188 struct obd_statfs osfs;
193 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
197 blk_size = osfs.os_bsize >> 10;
198 result = osfs.os_blocks;
200 while (blk_size >>= 1)
203 return sprintf(buf, "%llu\n", result);
205 LUSTRE_RO_ATTR(kbytestotal);
207 static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
210 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
212 struct obd_statfs osfs;
217 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
221 blk_size = osfs.os_bsize >> 10;
222 result = osfs.os_bfree;
224 while (blk_size >>= 1)
227 return sprintf(buf, "%llu\n", result);
229 LUSTRE_RO_ATTR(kbytesfree);
231 static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
234 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
236 struct obd_statfs osfs;
241 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
245 blk_size = osfs.os_bsize >> 10;
246 result = osfs.os_bavail;
248 while (blk_size >>= 1)
251 return sprintf(buf, "%llu\n", result);
253 LUSTRE_RO_ATTR(kbytesavail);
255 static ssize_t filestotal_show(struct kobject *kobj, struct attribute *attr,
258 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
260 struct obd_statfs osfs;
263 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
267 return sprintf(buf, "%llu\n", osfs.os_files);
269 LUSTRE_RO_ATTR(filestotal);
271 static ssize_t filesfree_show(struct kobject *kobj, struct attribute *attr,
274 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
276 struct obd_statfs osfs;
279 rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
283 return sprintf(buf, "%llu\n", osfs.os_ffree);
285 LUSTRE_RO_ATTR(filesfree);
287 static ssize_t client_type_show(struct kobject *kobj, struct attribute *attr,
290 return sprintf(buf, "local client\n");
292 LUSTRE_RO_ATTR(client_type);
294 static ssize_t fstype_show(struct kobject *kobj, struct attribute *attr,
297 return sprintf(buf, "lustre\n");
299 LUSTRE_RO_ATTR(fstype);
301 static ssize_t uuid_show(struct kobject *kobj, struct attribute *attr,
304 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
307 return sprintf(buf, "%s\n", sbi->ll_sb_uuid.uuid);
309 LUSTRE_RO_ATTR(uuid);
311 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
313 struct super_block *sb = m->private;
316 * See description of statistical counters in struct cl_site, and
319 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
322 LDEBUGFS_SEQ_FOPS_RO(ll_site_stats);
324 static ssize_t max_read_ahead_mb_show(struct kobject *kobj,
325 struct attribute *attr, char *buf)
327 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
329 unsigned long ra_max_mb;
331 spin_lock(&sbi->ll_lock);
332 ra_max_mb = PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages);
333 spin_unlock(&sbi->ll_lock);
335 return snprintf(buf, PAGE_SIZE, "%lu\n", ra_max_mb);
338 static ssize_t max_read_ahead_mb_store(struct kobject *kobj,
339 struct attribute *attr,
340 const char *buffer, size_t count)
342 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
344 u64 ra_max_mb, pages_number;
347 rc = sysfs_memparse(buffer, count, &ra_max_mb, "MiB");
351 pages_number = round_up(ra_max_mb, 1024 * 1024) >> PAGE_SHIFT;
352 CDEBUG(D_INFO, "%s: set max_read_ahead_mb=%llu (%llu pages)\n",
353 sbi->ll_fsname, PAGES_TO_MiB(pages_number), pages_number);
354 if (pages_number > cfs_totalram_pages() / 2) {
356 CERROR("%s: cannot set max_read_ahead_mb=%llu > totalram/2=%luMB\n",
357 sbi->ll_fsname, PAGES_TO_MiB(pages_number),
358 PAGES_TO_MiB(cfs_totalram_pages() / 2));
362 spin_lock(&sbi->ll_lock);
363 sbi->ll_ra_info.ra_max_pages = pages_number;
364 spin_unlock(&sbi->ll_lock);
368 LUSTRE_RW_ATTR(max_read_ahead_mb);
370 static ssize_t max_read_ahead_per_file_mb_show(struct kobject *kobj,
371 struct attribute *attr,
374 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
376 unsigned long ra_max_file_mb;
378 spin_lock(&sbi->ll_lock);
379 ra_max_file_mb = PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages_per_file);
380 spin_unlock(&sbi->ll_lock);
382 return snprintf(buf, PAGE_SIZE, "%lu\n", ra_max_file_mb);
385 static ssize_t max_read_ahead_per_file_mb_store(struct kobject *kobj,
386 struct attribute *attr,
390 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
392 u64 ra_max_file_mb, pages_number;
395 rc = sysfs_memparse(buffer, count, &ra_max_file_mb, "MiB");
399 pages_number = round_up(ra_max_file_mb, 1024 * 1024) >> PAGE_SHIFT;
400 if (pages_number > sbi->ll_ra_info.ra_max_pages) {
401 CERROR("%s: cannot set max_read_ahead_per_file_mb=%llu > max_read_ahead_mb=%lu\n",
402 sbi->ll_fsname, PAGES_TO_MiB(pages_number),
403 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages));
407 spin_lock(&sbi->ll_lock);
408 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
409 spin_unlock(&sbi->ll_lock);
413 LUSTRE_RW_ATTR(max_read_ahead_per_file_mb);
415 static ssize_t max_read_ahead_whole_mb_show(struct kobject *kobj,
416 struct attribute *attr, char *buf)
418 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
420 unsigned long ra_max_whole_mb;
422 spin_lock(&sbi->ll_lock);
423 ra_max_whole_mb = PAGES_TO_MiB(sbi->ll_ra_info.ra_max_read_ahead_whole_pages);
424 spin_unlock(&sbi->ll_lock);
426 return snprintf(buf, PAGE_SIZE, "%lu\n", ra_max_whole_mb);
429 static ssize_t max_read_ahead_whole_mb_store(struct kobject *kobj,
430 struct attribute *attr,
431 const char *buffer, size_t count)
433 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
435 u64 ra_max_whole_mb, pages_number;
438 rc = sysfs_memparse(buffer, count, &ra_max_whole_mb, "MiB");
442 pages_number = round_up(ra_max_whole_mb, 1024 * 1024) >> PAGE_SHIFT;
443 /* Cap this at the current max readahead window size, the readahead
444 * algorithm does this anyway so it's pointless to set it larger.
446 if (pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
447 CERROR("%s: cannot set max_read_ahead_whole_mb=%llu > max_read_ahead_per_file_mb=%lu\n",
448 sbi->ll_fsname, PAGES_TO_MiB(pages_number),
449 PAGES_TO_MiB(sbi->ll_ra_info.ra_max_pages_per_file));
454 spin_lock(&sbi->ll_lock);
455 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
456 spin_unlock(&sbi->ll_lock);
460 LUSTRE_RW_ATTR(max_read_ahead_whole_mb);
462 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
464 struct super_block *sb = m->private;
465 struct ll_sb_info *sbi = ll_s2sbi(sb);
466 struct cl_client_cache *cache = sbi->ll_cache;
470 mutex_lock(&cache->ccc_max_cache_mb_lock);
471 max_cached_mb = PAGES_TO_MiB(cache->ccc_lru_max);
472 unused_mb = PAGES_TO_MiB(atomic_long_read(&cache->ccc_lru_left));
473 mutex_unlock(&cache->ccc_max_cache_mb_lock);
474 seq_printf(m, "users: %d\n"
475 "max_cached_mb: %ld\n"
478 "reclaim_count: %u\n",
479 atomic_read(&cache->ccc_users),
481 max_cached_mb - unused_mb,
483 cache->ccc_lru_shrinkers);
487 static ssize_t ll_max_cached_mb_seq_write(struct file *file,
488 const char __user *buffer,
489 size_t count, loff_t *off)
491 struct seq_file *m = file->private_data;
492 struct super_block *sb = m->private;
493 struct ll_sb_info *sbi = ll_s2sbi(sb);
494 struct cl_client_cache *cache = sbi->ll_cache;
501 char kernbuf[128], *ptr;
504 if (count >= sizeof(kernbuf))
507 if (copy_from_user(kernbuf, buffer, count))
509 kernbuf[count] = '\0';
511 ptr = lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count);
512 rc = sysfs_memparse(ptr, count, &pages_number, "MiB");
516 pages_number >>= PAGE_SHIFT;
518 if (pages_number < 0 || pages_number > cfs_totalram_pages()) {
519 CERROR("%s: can't set max cache more than %lu MB\n",
521 PAGES_TO_MiB(cfs_totalram_pages()));
524 /* Allow enough cache so clients can make well-formed RPCs */
525 pages_number = max_t(long, pages_number, PTLRPC_MAX_BRW_PAGES);
527 mutex_lock(&cache->ccc_max_cache_mb_lock);
528 diff = pages_number - cache->ccc_lru_max;
530 /* easy - add more LRU slots. */
532 atomic_long_add(diff, &cache->ccc_lru_left);
536 env = cl_env_get(&refcheck);
538 GOTO(out_unlock, rc = PTR_ERR(env));
544 /* reduce LRU budget from free slots. */
546 long lru_left_old, lru_left_new, lru_left_ret;
548 lru_left_old = atomic_long_read(&cache->ccc_lru_left);
549 if (lru_left_old == 0)
552 lru_left_new = lru_left_old > diff ?
553 lru_left_old - diff : 0;
555 atomic_long_cmpxchg(&cache->ccc_lru_left,
558 if (likely(lru_left_old == lru_left_ret)) {
559 diff -= lru_left_old - lru_left_new;
560 nrpages += lru_left_old - lru_left_new;
568 if (sbi->ll_dt_exp == NULL) { /* being initialized */
573 /* Request extra free slots to avoid them all being used
574 * by other processes before this can continue shrinking.
576 tmp = diff + min_t(long, diff, MiB_TO_PAGES(1024));
577 /* difficult - have to ask OSCs to drop LRU slots. */
578 rc = obd_set_info_async(env, sbi->ll_dt_exp,
579 sizeof(KEY_CACHE_LRU_SHRINK),
580 KEY_CACHE_LRU_SHRINK,
581 sizeof(tmp), &tmp, NULL);
585 cl_env_put(env, &refcheck);
589 cache->ccc_lru_max = pages_number;
592 atomic_long_add(nrpages, &cache->ccc_lru_left);
595 mutex_unlock(&cache->ccc_max_cache_mb_lock);
598 LDEBUGFS_SEQ_FOPS(ll_max_cached_mb);
600 static ssize_t checksums_show(struct kobject *kobj, struct attribute *attr,
603 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
606 return sprintf(buf, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
609 static ssize_t checksums_store(struct kobject *kobj, struct attribute *attr,
610 const char *buffer, size_t count)
612 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
622 rc = kstrtobool(buffer, &val);
626 sbi->ll_flags |= LL_SBI_CHECKSUM;
628 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
631 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
632 KEY_CHECKSUM, sizeof(tmp), &tmp, NULL);
634 CWARN("Failed to set OSC checksum flags: %d\n", rc);
638 LUSTRE_RW_ATTR(checksums);
640 LUSTRE_ATTR(checksum_pages, 0644, checksums_show, checksums_store);
642 static ssize_t ll_rd_track_id(struct kobject *kobj, char *buf,
643 enum stats_track_type type)
645 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
648 if (sbi->ll_stats_track_type == type)
649 return sprintf(buf, "%d\n", sbi->ll_stats_track_id);
650 else if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
651 return sprintf(buf, "0 (all)\n");
653 return sprintf(buf, "untracked\n");
656 static ssize_t ll_wr_track_id(struct kobject *kobj, const char *buffer,
657 size_t count, enum stats_track_type type)
659 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
664 rc = kstrtoul(buffer, 10, &pid);
668 sbi->ll_stats_track_id = pid;
670 sbi->ll_stats_track_type = STATS_TRACK_ALL;
672 sbi->ll_stats_track_type = type;
673 lprocfs_clear_stats(sbi->ll_stats);
677 static ssize_t stats_track_pid_show(struct kobject *kobj,
678 struct attribute *attr,
681 return ll_rd_track_id(kobj, buf, STATS_TRACK_PID);
684 static ssize_t stats_track_pid_store(struct kobject *kobj,
685 struct attribute *attr,
689 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_PID);
691 LUSTRE_RW_ATTR(stats_track_pid);
693 static ssize_t stats_track_ppid_show(struct kobject *kobj,
694 struct attribute *attr,
697 return ll_rd_track_id(kobj, buf, STATS_TRACK_PPID);
700 static ssize_t stats_track_ppid_store(struct kobject *kobj,
701 struct attribute *attr,
705 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_PPID);
707 LUSTRE_RW_ATTR(stats_track_ppid);
709 static ssize_t stats_track_gid_show(struct kobject *kobj,
710 struct attribute *attr,
713 return ll_rd_track_id(kobj, buf, STATS_TRACK_GID);
716 static ssize_t stats_track_gid_store(struct kobject *kobj,
717 struct attribute *attr,
721 return ll_wr_track_id(kobj, buffer, count, STATS_TRACK_GID);
723 LUSTRE_RW_ATTR(stats_track_gid);
725 static ssize_t statahead_running_max_show(struct kobject *kobj,
726 struct attribute *attr,
729 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
732 return snprintf(buf, 16, "%u\n", sbi->ll_sa_running_max);
735 static ssize_t statahead_running_max_store(struct kobject *kobj,
736 struct attribute *attr,
740 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
745 rc = kstrtoul(buffer, 0, &val);
749 if (val <= LL_SA_RUNNING_MAX) {
750 sbi->ll_sa_running_max = val;
754 CERROR("Bad statahead_running_max value %lu. Valid values "
755 "are in the range [0, %d]\n", val, LL_SA_RUNNING_MAX);
759 LUSTRE_RW_ATTR(statahead_running_max);
761 static ssize_t statahead_max_show(struct kobject *kobj,
762 struct attribute *attr,
765 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
768 return sprintf(buf, "%u\n", sbi->ll_sa_max);
771 static ssize_t statahead_max_store(struct kobject *kobj,
772 struct attribute *attr,
776 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
781 rc = kstrtoul(buffer, 0, &val);
785 if (val <= LL_SA_RPC_MAX)
786 sbi->ll_sa_max = val;
788 CERROR("Bad statahead_max value %lu. Valid values are in the range [0, %d]\n",
793 LUSTRE_RW_ATTR(statahead_max);
795 static ssize_t statahead_agl_show(struct kobject *kobj,
796 struct attribute *attr,
799 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
802 return sprintf(buf, "%u\n", sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
805 static ssize_t statahead_agl_store(struct kobject *kobj,
806 struct attribute *attr,
810 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
815 rc = kstrtobool(buffer, &val);
820 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
822 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
826 LUSTRE_RW_ATTR(statahead_agl);
828 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
830 struct super_block *sb = m->private;
831 struct ll_sb_info *sbi = ll_s2sbi(sb);
833 seq_printf(m, "statahead total: %u\n"
834 "statahead wrong: %u\n"
836 atomic_read(&sbi->ll_sa_total),
837 atomic_read(&sbi->ll_sa_wrong),
838 atomic_read(&sbi->ll_agl_total));
842 LDEBUGFS_SEQ_FOPS_RO(ll_statahead_stats);
844 static ssize_t lazystatfs_show(struct kobject *kobj,
845 struct attribute *attr,
848 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
851 return sprintf(buf, "%u\n", (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
854 static ssize_t lazystatfs_store(struct kobject *kobj,
855 struct attribute *attr,
859 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
864 rc = kstrtobool(buffer, &val);
869 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
871 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
875 LUSTRE_RW_ATTR(lazystatfs);
877 static ssize_t statfs_max_age_show(struct kobject *kobj, struct attribute *attr,
880 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
883 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_statfs_max_age);
886 static ssize_t statfs_max_age_store(struct kobject *kobj,
887 struct attribute *attr, const char *buffer,
890 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
895 rc = kstrtouint(buffer, 10, &val);
898 if (val > OBD_STATFS_CACHE_MAX_AGE)
901 sbi->ll_statfs_max_age = val;
905 LUSTRE_RW_ATTR(statfs_max_age);
907 static ssize_t max_easize_show(struct kobject *kobj,
908 struct attribute *attr,
911 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
916 rc = ll_get_max_mdsize(sbi, &ealen);
920 /* Limit xattr size returned to userspace based on kernel maximum */
921 return snprintf(buf, PAGE_SIZE, "%u\n",
922 ealen > XATTR_SIZE_MAX ? XATTR_SIZE_MAX : ealen);
924 LUSTRE_RO_ATTR(max_easize);
927 * Get default_easize.
929 * \see client_obd::cl_default_mds_easize
931 * \param[in] m seq_file handle
932 * \param[in] v unused for single entry
934 * \retval 0 on success
935 * \retval negative negated errno on failure
937 static ssize_t default_easize_show(struct kobject *kobj,
938 struct attribute *attr,
941 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
946 rc = ll_get_default_mdsize(sbi, &ealen);
950 /* Limit xattr size returned to userspace based on kernel maximum */
951 return snprintf(buf, PAGE_SIZE, "%u\n",
952 ealen > XATTR_SIZE_MAX ? XATTR_SIZE_MAX : ealen);
956 * Set default_easize.
958 * Range checking on the passed value is handled by
959 * ll_set_default_mdsize().
961 * \see client_obd::cl_default_mds_easize
963 * \param[in] file proc file
964 * \param[in] buffer string passed from user space
965 * \param[in] count \a buffer length
966 * \param[in] off unused for single entry
968 * \retval positive \a count on success
969 * \retval negative negated errno on failure
971 static ssize_t default_easize_store(struct kobject *kobj,
972 struct attribute *attr,
976 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
984 rc = kstrtouint(buffer, 10, &val);
988 rc = ll_set_default_mdsize(sbi, val);
994 LUSTRE_RW_ATTR(default_easize);
996 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
998 const char *str[] = LL_SBI_FLAGS;
999 struct super_block *sb = m->private;
1000 int flags = ll_s2sbi(sb)->ll_flags;
1003 while (flags != 0) {
1004 if (ARRAY_SIZE(str) <= i) {
1005 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
1006 "flags please.\n", ll_s2sbi(sb)->ll_fsname);
1011 seq_printf(m, "%s ", str[i]);
1015 seq_printf(m, "\b\n");
1019 LDEBUGFS_SEQ_FOPS_RO(ll_sbi_flags);
1021 static ssize_t xattr_cache_show(struct kobject *kobj,
1022 struct attribute *attr,
1025 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1028 return sprintf(buf, "%u\n", sbi->ll_xattr_cache_enabled);
1031 static ssize_t xattr_cache_store(struct kobject *kobj,
1032 struct attribute *attr,
1036 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1041 rc = kstrtobool(buffer, &val);
1045 if (val && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
1048 sbi->ll_xattr_cache_enabled = val;
1049 sbi->ll_xattr_cache_set = 1;
1053 LUSTRE_RW_ATTR(xattr_cache);
1055 static ssize_t tiny_write_show(struct kobject *kobj,
1056 struct attribute *attr,
1059 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1062 return sprintf(buf, "%u\n", !!(sbi->ll_flags & LL_SBI_TINY_WRITE));
1065 static ssize_t tiny_write_store(struct kobject *kobj,
1066 struct attribute *attr,
1070 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1075 rc = kstrtobool(buffer, &val);
1079 spin_lock(&sbi->ll_lock);
1081 sbi->ll_flags |= LL_SBI_TINY_WRITE;
1083 sbi->ll_flags &= ~LL_SBI_TINY_WRITE;
1084 spin_unlock(&sbi->ll_lock);
1088 LUSTRE_RW_ATTR(tiny_write);
1090 static ssize_t max_read_ahead_async_active_show(struct kobject *kobj,
1091 struct attribute *attr,
1094 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1097 return snprintf(buf, PAGE_SIZE, "%u\n",
1098 sbi->ll_ra_info.ra_async_max_active);
1101 static ssize_t max_read_ahead_async_active_store(struct kobject *kobj,
1102 struct attribute *attr,
1106 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1111 rc = kstrtouint(buffer, 10, &val);
1115 if (val < 1 || val > WQ_UNBOUND_MAX_ACTIVE) {
1116 CERROR("%s: cannot set max_read_ahead_async_active=%u %s than %u\n",
1117 sbi->ll_fsname, val,
1118 val < 1 ? "smaller" : "larger",
1119 val < 1 ? 1 : WQ_UNBOUND_MAX_ACTIVE);
1123 spin_lock(&sbi->ll_lock);
1124 sbi->ll_ra_info.ra_async_max_active = val;
1125 spin_unlock(&sbi->ll_lock);
1126 workqueue_set_max_active(sbi->ll_ra_info.ll_readahead_wq, val);
1130 LUSTRE_RW_ATTR(max_read_ahead_async_active);
1132 static ssize_t read_ahead_async_file_threshold_mb_show(struct kobject *kobj,
1133 struct attribute *attr,
1136 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1139 return snprintf(buf, PAGE_SIZE, "%lu\n",
1140 PAGES_TO_MiB(sbi->ll_ra_info.ra_async_pages_per_file_threshold));
1144 read_ahead_async_file_threshold_mb_store(struct kobject *kobj,
1145 struct attribute *attr,
1146 const char *buffer, size_t count)
1148 unsigned long pages_number;
1149 unsigned long max_ra_per_file;
1150 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1154 rc = kstrtoul(buffer, 10, &pages_number);
1158 pages_number = MiB_TO_PAGES(pages_number);
1159 max_ra_per_file = sbi->ll_ra_info.ra_max_pages_per_file;
1160 if (pages_number < 0 || pages_number > max_ra_per_file) {
1161 CERROR("%s: can't set read_ahead_async_file_threshold_mb=%lu > "
1162 "max_read_readahead_per_file_mb=%lu\n", sbi->ll_fsname,
1163 PAGES_TO_MiB(pages_number),
1164 PAGES_TO_MiB(max_ra_per_file));
1167 sbi->ll_ra_info.ra_async_pages_per_file_threshold = pages_number;
1171 LUSTRE_RW_ATTR(read_ahead_async_file_threshold_mb);
1173 static ssize_t fast_read_show(struct kobject *kobj,
1174 struct attribute *attr,
1177 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1180 return sprintf(buf, "%u\n", !!(sbi->ll_flags & LL_SBI_FAST_READ));
1183 static ssize_t fast_read_store(struct kobject *kobj,
1184 struct attribute *attr,
1188 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1193 rc = kstrtobool(buffer, &val);
1197 spin_lock(&sbi->ll_lock);
1199 sbi->ll_flags |= LL_SBI_FAST_READ;
1201 sbi->ll_flags &= ~LL_SBI_FAST_READ;
1202 spin_unlock(&sbi->ll_lock);
1206 LUSTRE_RW_ATTR(fast_read);
1208 static ssize_t file_heat_show(struct kobject *kobj,
1209 struct attribute *attr,
1212 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1215 return snprintf(buf, PAGE_SIZE, "%u\n",
1216 !!(sbi->ll_flags & LL_SBI_FILE_HEAT));
1219 static ssize_t file_heat_store(struct kobject *kobj,
1220 struct attribute *attr,
1224 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1229 rc = kstrtobool(buffer, &val);
1233 spin_lock(&sbi->ll_lock);
1235 sbi->ll_flags |= LL_SBI_FILE_HEAT;
1237 sbi->ll_flags &= ~LL_SBI_FILE_HEAT;
1238 spin_unlock(&sbi->ll_lock);
1242 LUSTRE_RW_ATTR(file_heat);
1244 static ssize_t heat_decay_percentage_show(struct kobject *kobj,
1245 struct attribute *attr,
1248 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1251 return snprintf(buf, PAGE_SIZE, "%u\n",
1252 (sbi->ll_heat_decay_weight * 100 + 128) / 256);
1255 static ssize_t heat_decay_percentage_store(struct kobject *kobj,
1256 struct attribute *attr,
1260 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1265 rc = kstrtoul(buffer, 10, &val);
1269 if (val < 0 || val > 100)
1272 sbi->ll_heat_decay_weight = (val * 256 + 50) / 100;
1276 LUSTRE_RW_ATTR(heat_decay_percentage);
1278 static ssize_t heat_period_second_show(struct kobject *kobj,
1279 struct attribute *attr,
1282 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1285 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->ll_heat_period_second);
1288 static ssize_t heat_period_second_store(struct kobject *kobj,
1289 struct attribute *attr,
1293 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1298 rc = kstrtoul(buffer, 10, &val);
1305 sbi->ll_heat_period_second = val;
1309 LUSTRE_RW_ATTR(heat_period_second);
1311 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
1313 struct super_block *sb = m->private;
1314 struct ll_sb_info *sbi = ll_s2sbi(sb);
1315 struct cl_client_cache *cache = sbi->ll_cache;
1319 pages = atomic_long_read(&cache->ccc_unstable_nr);
1320 mb = (pages * PAGE_SIZE) >> 20;
1322 seq_printf(m, "unstable_check: %8d\n"
1323 "unstable_pages: %12ld\n"
1324 "unstable_mb: %8d\n",
1325 cache->ccc_unstable_check, pages, mb);
1329 static ssize_t ll_unstable_stats_seq_write(struct file *file,
1330 const char __user *buffer,
1331 size_t count, loff_t *unused)
1333 struct seq_file *seq = file->private_data;
1334 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
1341 if (count >= sizeof(kernbuf))
1344 if (copy_from_user(kernbuf, buffer, count))
1348 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
1350 rc = kstrtobool_from_user(buffer, count, &val);
1354 /* borrow lru lock to set the value */
1355 spin_lock(&sbi->ll_cache->ccc_lru_lock);
1356 sbi->ll_cache->ccc_unstable_check = val;
1357 spin_unlock(&sbi->ll_cache->ccc_lru_lock);
1362 LDEBUGFS_SEQ_FOPS(ll_unstable_stats);
1364 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
1366 struct super_block *sb = m->private;
1367 struct ll_sb_info *sbi = ll_s2sbi(sb);
1368 struct root_squash_info *squash = &sbi->ll_squash;
1370 seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
1374 static ssize_t ll_root_squash_seq_write(struct file *file,
1375 const char __user *buffer,
1376 size_t count, loff_t *off)
1378 struct seq_file *m = file->private_data;
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;
1383 return lprocfs_wr_root_squash(buffer, count, squash, sbi->ll_fsname);
1386 LDEBUGFS_SEQ_FOPS(ll_root_squash);
1388 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
1390 struct super_block *sb = m->private;
1391 struct ll_sb_info *sbi = ll_s2sbi(sb);
1392 struct root_squash_info *squash = &sbi->ll_squash;
1395 spin_lock(&squash->rsi_lock);
1396 if (!list_empty(&squash->rsi_nosquash_nids)) {
1397 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
1398 &squash->rsi_nosquash_nids);
1402 seq_puts(m, "NONE\n");
1404 spin_unlock(&squash->rsi_lock);
1409 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
1410 const char __user *buffer,
1411 size_t count, loff_t *off)
1413 struct seq_file *m = file->private_data;
1414 struct super_block *sb = m->private;
1415 struct ll_sb_info *sbi = ll_s2sbi(sb);
1416 struct root_squash_info *squash = &sbi->ll_squash;
1419 rc = lprocfs_wr_nosquash_nids(buffer, count, squash, sbi->ll_fsname);
1423 ll_compute_rootsquash_state(sbi);
1428 LDEBUGFS_SEQ_FOPS(ll_nosquash_nids);
1430 static int ll_pcc_seq_show(struct seq_file *m, void *v)
1432 struct super_block *sb = m->private;
1433 struct ll_sb_info *sbi = ll_s2sbi(sb);
1435 return pcc_super_dump(&sbi->ll_pcc_super, m);
1438 static ssize_t ll_pcc_seq_write(struct file *file, const char __user *buffer,
1439 size_t count, loff_t *off)
1441 struct seq_file *m = file->private_data;
1442 struct super_block *sb = m->private;
1443 struct ll_sb_info *sbi = ll_s2sbi(sb);
1447 if (count >= LPROCFS_WR_PCC_MAX_CMD)
1450 if (!(exp_connect_flags2(sbi->ll_md_exp) & OBD_CONNECT2_PCC))
1453 OBD_ALLOC(kernbuf, count + 1);
1454 if (kernbuf == NULL)
1457 if (copy_from_user(kernbuf, buffer, count))
1458 GOTO(out_free_kernbuff, rc = -EFAULT);
1460 rc = pcc_cmd_handle(kernbuf, count, &sbi->ll_pcc_super);
1462 OBD_FREE(kernbuf, count + 1);
1463 return rc ? rc : count;
1465 LPROC_SEQ_FOPS(ll_pcc);
1467 struct lprocfs_vars lprocfs_llite_obd_vars[] = {
1469 .fops = &ll_site_stats_fops },
1470 { .name = "max_cached_mb",
1471 .fops = &ll_max_cached_mb_fops },
1472 { .name = "statahead_stats",
1473 .fops = &ll_statahead_stats_fops },
1474 { .name = "unstable_stats",
1475 .fops = &ll_unstable_stats_fops },
1476 { .name = "sbi_flags",
1477 .fops = &ll_sbi_flags_fops },
1478 { .name = "root_squash",
1479 .fops = &ll_root_squash_fops },
1480 { .name = "nosquash_nids",
1481 .fops = &ll_nosquash_nids_fops },
1483 .fops = &ll_pcc_fops, },
1487 #define MAX_STRING_SIZE 128
1489 static struct attribute *llite_attrs[] = {
1490 &lustre_attr_blocksize.attr,
1491 &lustre_attr_stat_blocksize.attr,
1492 &lustre_attr_kbytestotal.attr,
1493 &lustre_attr_kbytesfree.attr,
1494 &lustre_attr_kbytesavail.attr,
1495 &lustre_attr_filestotal.attr,
1496 &lustre_attr_filesfree.attr,
1497 &lustre_attr_client_type.attr,
1498 &lustre_attr_fstype.attr,
1499 &lustre_attr_uuid.attr,
1500 &lustre_attr_checksums.attr,
1501 &lustre_attr_checksum_pages.attr,
1502 &lustre_attr_max_read_ahead_mb.attr,
1503 &lustre_attr_max_read_ahead_per_file_mb.attr,
1504 &lustre_attr_max_read_ahead_whole_mb.attr,
1505 &lustre_attr_max_read_ahead_async_active.attr,
1506 &lustre_attr_read_ahead_async_file_threshold_mb.attr,
1507 &lustre_attr_stats_track_pid.attr,
1508 &lustre_attr_stats_track_ppid.attr,
1509 &lustre_attr_stats_track_gid.attr,
1510 &lustre_attr_statahead_running_max.attr,
1511 &lustre_attr_statahead_max.attr,
1512 &lustre_attr_statahead_agl.attr,
1513 &lustre_attr_lazystatfs.attr,
1514 &lustre_attr_statfs_max_age.attr,
1515 &lustre_attr_max_easize.attr,
1516 &lustre_attr_default_easize.attr,
1517 &lustre_attr_xattr_cache.attr,
1518 &lustre_attr_fast_read.attr,
1519 &lustre_attr_tiny_write.attr,
1520 &lustre_attr_file_heat.attr,
1521 &lustre_attr_heat_decay_percentage.attr,
1522 &lustre_attr_heat_period_second.attr,
1526 static void sbi_kobj_release(struct kobject *kobj)
1528 struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
1530 complete(&sbi->ll_kobj_unregister);
1533 static struct kobj_type sbi_ktype = {
1534 .default_attrs = llite_attrs,
1535 .sysfs_ops = &lustre_sysfs_ops,
1536 .release = sbi_kobj_release,
1539 #define LPROCFS_TYPE_LATENCY \
1540 (LPROCFS_TYPE_USEC | LPROCFS_CNTR_AVGMINMAX | LPROCFS_CNTR_STDDEV)
1541 static const struct llite_file_opcode {
1545 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
1546 /* file operation */
1547 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX | LPROCFS_TYPE_BYTES,
1549 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX | LPROCFS_TYPE_BYTES,
1551 { LPROC_LL_READ, LPROCFS_TYPE_LATENCY, "read" },
1552 { LPROC_LL_WRITE, LPROCFS_TYPE_LATENCY, "write" },
1553 { LPROC_LL_IOCTL, LPROCFS_TYPE_REQS, "ioctl" },
1554 { LPROC_LL_OPEN, LPROCFS_TYPE_LATENCY, "open" },
1555 { LPROC_LL_RELEASE, LPROCFS_TYPE_LATENCY, "close" },
1556 { LPROC_LL_MMAP, LPROCFS_TYPE_LATENCY, "mmap" },
1557 { LPROC_LL_FAULT, LPROCFS_TYPE_LATENCY, "page_fault" },
1558 { LPROC_LL_MKWRITE, LPROCFS_TYPE_LATENCY, "page_mkwrite" },
1559 { LPROC_LL_LLSEEK, LPROCFS_TYPE_LATENCY, "seek" },
1560 { LPROC_LL_FSYNC, LPROCFS_TYPE_LATENCY, "fsync" },
1561 { LPROC_LL_READDIR, LPROCFS_TYPE_LATENCY, "readdir" },
1562 /* inode operation */
1563 { LPROC_LL_SETATTR, LPROCFS_TYPE_LATENCY, "setattr" },
1564 { LPROC_LL_TRUNC, LPROCFS_TYPE_LATENCY, "truncate" },
1565 { LPROC_LL_FLOCK, LPROCFS_TYPE_LATENCY, "flock" },
1566 { LPROC_LL_GETATTR, LPROCFS_TYPE_LATENCY, "getattr" },
1567 /* dir inode operation */
1568 { LPROC_LL_CREATE, LPROCFS_TYPE_LATENCY, "create" },
1569 { LPROC_LL_LINK, LPROCFS_TYPE_LATENCY, "link" },
1570 { LPROC_LL_UNLINK, LPROCFS_TYPE_LATENCY, "unlink" },
1571 { LPROC_LL_SYMLINK, LPROCFS_TYPE_LATENCY, "symlink" },
1572 { LPROC_LL_MKDIR, LPROCFS_TYPE_LATENCY, "mkdir" },
1573 { LPROC_LL_RMDIR, LPROCFS_TYPE_LATENCY, "rmdir" },
1574 { LPROC_LL_MKNOD, LPROCFS_TYPE_LATENCY, "mknod" },
1575 { LPROC_LL_RENAME, LPROCFS_TYPE_LATENCY, "rename" },
1576 /* special inode operation */
1577 { LPROC_LL_STATFS, LPROCFS_TYPE_LATENCY, "statfs" },
1578 { LPROC_LL_SETXATTR, LPROCFS_TYPE_LATENCY, "setxattr" },
1579 { LPROC_LL_GETXATTR, LPROCFS_TYPE_LATENCY, "getxattr" },
1580 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REQS, "getxattr_hits" },
1581 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_LATENCY, "listxattr" },
1582 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_LATENCY, "removexattr" },
1583 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_LATENCY, "inode_permission" },
1586 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, long count)
1591 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
1592 lprocfs_counter_add(sbi->ll_stats, op, count);
1593 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
1594 sbi->ll_stats_track_id == current->pid)
1595 lprocfs_counter_add(sbi->ll_stats, op, count);
1596 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
1597 sbi->ll_stats_track_id == current->parent->pid)
1598 lprocfs_counter_add(sbi->ll_stats, op, count);
1599 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
1600 sbi->ll_stats_track_id ==
1601 from_kgid(&init_user_ns, current_gid()))
1602 lprocfs_counter_add(sbi->ll_stats, op, count);
1604 EXPORT_SYMBOL(ll_stats_ops_tally);
1606 static const char *ra_stat_string[] = {
1607 [RA_STAT_HIT] = "hits",
1608 [RA_STAT_MISS] = "misses",
1609 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
1610 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
1611 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
1612 [RA_STAT_FAILED_MATCH] = "failed lock match",
1613 [RA_STAT_DISCARDED] = "read but discarded",
1614 [RA_STAT_ZERO_LEN] = "zero length file",
1615 [RA_STAT_ZERO_WINDOW] = "zero size window",
1616 [RA_STAT_EOF] = "read-ahead to EOF",
1617 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
1618 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
1619 [RA_STAT_FAILED_REACH_END] = "failed to reach end",
1620 [RA_STAT_ASYNC] = "async readahead",
1621 [RA_STAT_FAILED_FAST_READ] = "failed to fast read",
1624 int ll_debugfs_register_super(struct super_block *sb, const char *name)
1626 struct lustre_sb_info *lsi = s2lsi(sb);
1627 struct ll_sb_info *sbi = ll_s2sbi(sb);
1633 if (IS_ERR_OR_NULL(llite_root))
1636 sbi->ll_debugfs_entry = debugfs_create_dir(name, llite_root);
1637 ldebugfs_add_vars(sbi->ll_debugfs_entry, lprocfs_llite_obd_vars, sb);
1639 rc = ldebugfs_seq_create(sbi->ll_debugfs_entry, "dump_page_cache",0444,
1640 &vvp_dump_pgcache_file_ops, sbi);
1642 CWARN("Error adding the dump_page_cache file\n");
1644 rc = ldebugfs_seq_create(sbi->ll_debugfs_entry, "extents_stats", 0644,
1645 &ll_rw_extents_stats_fops, sbi);
1647 CWARN("Error adding the extent_stats file\n");
1649 rc = ldebugfs_seq_create(sbi->ll_debugfs_entry,
1650 "extents_stats_per_process", 0644,
1651 &ll_rw_extents_stats_pp_fops, sbi);
1653 CWARN("Error adding the extents_stats_per_process file\n");
1655 rc = ldebugfs_seq_create(sbi->ll_debugfs_entry, "offset_stats", 0644,
1656 &ll_rw_offset_stats_fops, sbi);
1658 CWARN("Error adding the offset_stats file\n");
1660 /* File operations stats */
1661 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1662 LPROCFS_STATS_FLAG_NONE);
1663 if (sbi->ll_stats == NULL)
1664 GOTO(out_debugfs, err = -ENOMEM);
1666 /* do counter init */
1667 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1668 u32 type = llite_opcode_table[id].type;
1671 if (type & LPROCFS_TYPE_REQS)
1673 else if (type & LPROCFS_TYPE_BYTES)
1675 else if (type & LPROCFS_TYPE_PAGES)
1677 else if (type & LPROCFS_TYPE_USEC)
1679 lprocfs_counter_init(sbi->ll_stats,
1680 llite_opcode_table[id].opcode,
1681 (type & LPROCFS_CNTR_AVGMINMAX),
1682 llite_opcode_table[id].opname, ptr);
1685 err = ldebugfs_register_stats(sbi->ll_debugfs_entry, "stats",
1688 GOTO(out_stats, err);
1690 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1691 LPROCFS_STATS_FLAG_NONE);
1692 if (sbi->ll_ra_stats == NULL)
1693 GOTO(out_stats, err = -ENOMEM);
1695 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1696 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1697 ra_stat_string[id], "pages");
1699 err = ldebugfs_register_stats(sbi->ll_debugfs_entry, "read_ahead_stats",
1702 GOTO(out_ra_stats, err);
1705 /* Yes we also register sysfs mount kset here as well */
1706 sbi->ll_kset.kobj.parent = llite_kobj;
1707 sbi->ll_kset.kobj.ktype = &sbi_ktype;
1708 init_completion(&sbi->ll_kobj_unregister);
1709 err = kobject_set_name(&sbi->ll_kset.kobj, "%s", name);
1711 GOTO(out_ra_stats, err);
1713 err = kset_register(&sbi->ll_kset);
1715 GOTO(out_ra_stats, err);
1717 lsi->lsi_kobj = kobject_get(&sbi->ll_kset.kobj);
1721 lprocfs_free_stats(&sbi->ll_ra_stats);
1723 lprocfs_free_stats(&sbi->ll_stats);
1725 debugfs_remove_recursive(sbi->ll_debugfs_entry);
1730 void ll_debugfs_unregister_super(struct super_block *sb)
1732 struct lustre_sb_info *lsi = s2lsi(sb);
1733 struct ll_sb_info *sbi = ll_s2sbi(sb);
1735 debugfs_remove_recursive(sbi->ll_debugfs_entry);
1738 sysfs_remove_link(&sbi->ll_kset.kobj,
1739 sbi->ll_dt_obd->obd_type->typ_name);
1742 sysfs_remove_link(&sbi->ll_kset.kobj,
1743 sbi->ll_md_obd->obd_type->typ_name);
1745 kobject_put(lsi->lsi_kobj);
1747 kset_unregister(&sbi->ll_kset);
1748 wait_for_completion(&sbi->ll_kobj_unregister);
1750 lprocfs_free_stats(&sbi->ll_ra_stats);
1751 lprocfs_free_stats(&sbi->ll_stats);
1753 #undef MAX_STRING_SIZE
1755 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1756 struct seq_file *seq, int which)
1758 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1759 unsigned long start, end, r, w;
1760 char *unitp = "KMGTPEZY";
1762 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1768 for(i = 0; i < LL_HIST_MAX; i++) {
1769 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1770 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1773 for(i = 0; i < LL_HIST_MAX; i++) {
1774 r = pp_info->pp_r_hist.oh_buckets[i];
1775 w = pp_info->pp_w_hist.oh_buckets[i];
1778 end = BIT(i + LL_HIST_START - units);
1779 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4u %4u | "
1780 "%14lu %4u %4u\n", start, *unitp, end, *unitp,
1781 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1782 r, pct(r, read_tot), pct(read_cum, read_tot),
1783 w, pct(w, write_tot), pct(write_cum, write_tot));
1785 if (start == BIT(10)) {
1790 if (read_cum == read_tot && write_cum == write_tot)
1795 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1797 struct timespec64 now;
1798 struct ll_sb_info *sbi = seq->private;
1799 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1802 ktime_get_real_ts64(&now);
1804 if (!sbi->ll_rw_stats_on) {
1805 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
1808 seq_printf(seq, "snapshot_time: %llu.%09lu (secs.nsecs)\n",
1809 (s64)now.tv_sec, now.tv_nsec);
1810 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1811 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1812 "extents", "calls", "%", "cum%",
1813 "calls", "%", "cum%");
1814 spin_lock(&sbi->ll_pp_extent_lock);
1815 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1816 if (io_extents->pp_extents[k].pid != 0) {
1817 seq_printf(seq, "\nPID: %d\n",
1818 io_extents->pp_extents[k].pid);
1819 ll_display_extents_info(io_extents, seq, k);
1822 spin_unlock(&sbi->ll_pp_extent_lock);
1826 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1827 const char __user *buf,
1831 struct seq_file *seq = file->private_data;
1832 struct ll_sb_info *sbi = seq->private;
1833 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1840 value = ll_stats_pid_write(buf, len);
1843 sbi->ll_rw_stats_on = 0;
1845 sbi->ll_rw_stats_on = 1;
1847 spin_lock(&sbi->ll_pp_extent_lock);
1848 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1849 io_extents->pp_extents[i].pid = 0;
1850 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1851 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1853 spin_unlock(&sbi->ll_pp_extent_lock);
1857 LDEBUGFS_SEQ_FOPS(ll_rw_extents_stats_pp);
1859 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1861 struct timespec64 now;
1862 struct ll_sb_info *sbi = seq->private;
1863 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1865 ktime_get_real_ts64(&now);
1867 if (!sbi->ll_rw_stats_on) {
1868 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
1871 seq_printf(seq, "snapshot_time: %llu.%09lu (secs.nsecs)\n",
1872 (s64)now.tv_sec, now.tv_nsec);
1874 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1875 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1876 "extents", "calls", "%", "cum%",
1877 "calls", "%", "cum%");
1878 spin_lock(&sbi->ll_lock);
1879 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1880 spin_unlock(&sbi->ll_lock);
1885 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1886 const char __user *buf,
1887 size_t len, loff_t *off)
1889 struct seq_file *seq = file->private_data;
1890 struct ll_sb_info *sbi = seq->private;
1891 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1898 value = ll_stats_pid_write(buf, len);
1901 sbi->ll_rw_stats_on = 0;
1903 sbi->ll_rw_stats_on = 1;
1905 spin_lock(&sbi->ll_pp_extent_lock);
1906 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1907 io_extents->pp_extents[i].pid = 0;
1908 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1909 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1911 spin_unlock(&sbi->ll_pp_extent_lock);
1916 LDEBUGFS_SEQ_FOPS(ll_rw_extents_stats);
1918 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1919 struct ll_file_data *file, loff_t pos,
1920 size_t count, int rw)
1923 struct ll_rw_process_info *process;
1924 struct ll_rw_process_info *offset;
1925 int *off_count = &sbi->ll_rw_offset_entry_count;
1926 int *process_count = &sbi->ll_offset_process_count;
1927 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1929 if(!sbi->ll_rw_stats_on)
1931 process = sbi->ll_rw_process_info;
1932 offset = sbi->ll_rw_offset_info;
1934 spin_lock(&sbi->ll_pp_extent_lock);
1935 /* Extent statistics */
1936 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1937 if(io_extents->pp_extents[i].pid == pid) {
1945 sbi->ll_extent_process_count =
1946 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1947 cur = sbi->ll_extent_process_count;
1948 io_extents->pp_extents[cur].pid = pid;
1949 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1950 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1953 for (i = 0; (count >= BIT(LL_HIST_START + i)) &&
1954 (i < (LL_HIST_MAX - 1)); i++);
1956 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1957 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1959 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1960 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1962 spin_unlock(&sbi->ll_pp_extent_lock);
1964 spin_lock(&sbi->ll_process_lock);
1965 /* Offset statistics */
1966 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1967 if (process[i].rw_pid == pid) {
1968 if (process[i].rw_last_file != file) {
1969 process[i].rw_range_start = pos;
1970 process[i].rw_last_file_pos = pos + count;
1971 process[i].rw_smallest_extent = count;
1972 process[i].rw_largest_extent = count;
1973 process[i].rw_offset = 0;
1974 process[i].rw_last_file = file;
1975 spin_unlock(&sbi->ll_process_lock);
1978 if (process[i].rw_last_file_pos != pos) {
1980 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1981 offset[*off_count].rw_op = process[i].rw_op;
1982 offset[*off_count].rw_pid = pid;
1983 offset[*off_count].rw_range_start =
1984 process[i].rw_range_start;
1985 offset[*off_count].rw_range_end =
1986 process[i].rw_last_file_pos;
1987 offset[*off_count].rw_smallest_extent =
1988 process[i].rw_smallest_extent;
1989 offset[*off_count].rw_largest_extent =
1990 process[i].rw_largest_extent;
1991 offset[*off_count].rw_offset =
1992 process[i].rw_offset;
1993 process[i].rw_op = rw;
1994 process[i].rw_range_start = pos;
1995 process[i].rw_smallest_extent = count;
1996 process[i].rw_largest_extent = count;
1997 process[i].rw_offset = pos -
1998 process[i].rw_last_file_pos;
2000 if(process[i].rw_smallest_extent > count)
2001 process[i].rw_smallest_extent = count;
2002 if(process[i].rw_largest_extent < count)
2003 process[i].rw_largest_extent = count;
2004 process[i].rw_last_file_pos = pos + count;
2005 spin_unlock(&sbi->ll_process_lock);
2009 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
2010 process[*process_count].rw_pid = pid;
2011 process[*process_count].rw_op = rw;
2012 process[*process_count].rw_range_start = pos;
2013 process[*process_count].rw_last_file_pos = pos + count;
2014 process[*process_count].rw_smallest_extent = count;
2015 process[*process_count].rw_largest_extent = count;
2016 process[*process_count].rw_offset = 0;
2017 process[*process_count].rw_last_file = file;
2018 spin_unlock(&sbi->ll_process_lock);
2021 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
2023 struct timespec64 now;
2024 struct ll_sb_info *sbi = seq->private;
2025 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
2026 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
2029 ktime_get_real_ts64(&now);
2031 if (!sbi->ll_rw_stats_on) {
2032 seq_puts(seq, "disabled\n write anything to this file to activate, then '0' or 'disable' to deactivate\n");
2035 spin_lock(&sbi->ll_process_lock);
2037 seq_printf(seq, "snapshot_time: %llu.%09lu (secs.nsecs)\n",
2038 (s64)now.tv_sec, now.tv_nsec);
2039 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
2040 "R/W", "PID", "RANGE START", "RANGE END",
2041 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
2043 /* We stored the discontiguous offsets here; print them first */
2044 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
2045 if (offset[i].rw_pid != 0)
2047 "%3c %10d %14llu %14llu %17lu %17lu %14lld\n",
2048 offset[i].rw_op == READ ? 'R' : 'W',
2050 offset[i].rw_range_start,
2051 offset[i].rw_range_end,
2052 (unsigned long)offset[i].rw_smallest_extent,
2053 (unsigned long)offset[i].rw_largest_extent,
2054 offset[i].rw_offset);
2057 /* Then print the current offsets for each process */
2058 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
2059 if (process[i].rw_pid != 0)
2061 "%3c %10d %14llu %14llu %17lu %17lu %14lld\n",
2062 process[i].rw_op == READ ? 'R' : 'W',
2064 process[i].rw_range_start,
2065 process[i].rw_last_file_pos,
2066 (unsigned long)process[i].rw_smallest_extent,
2067 (unsigned long)process[i].rw_largest_extent,
2068 process[i].rw_offset);
2070 spin_unlock(&sbi->ll_process_lock);
2075 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
2076 const char __user *buf,
2077 size_t len, loff_t *off)
2079 struct seq_file *seq = file->private_data;
2080 struct ll_sb_info *sbi = seq->private;
2081 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
2082 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
2088 value = ll_stats_pid_write(buf, len);
2091 sbi->ll_rw_stats_on = 0;
2093 sbi->ll_rw_stats_on = 1;
2095 spin_lock(&sbi->ll_process_lock);
2096 sbi->ll_offset_process_count = 0;
2097 sbi->ll_rw_offset_entry_count = 0;
2098 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
2099 LL_PROCESS_HIST_MAX);
2100 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
2101 LL_OFFSET_HIST_MAX);
2102 spin_unlock(&sbi->ll_process_lock);
2107 LDEBUGFS_SEQ_FOPS(ll_rw_offset_stats);