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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 #define DEBUG_SUBSYSTEM S_LLITE
38 #include <linux/version.h>
39 #include <lustre_param.h>
40 #include <lprocfs_status.h>
41 #include <obd_support.h>
43 #include "llite_internal.h"
44 #include "vvp_internal.h"
46 struct proc_dir_entry *proc_lustre_fs_root;
49 /* /proc/lustre/llite mount point registration */
50 struct file_operations ll_rw_extents_stats_fops;
51 struct file_operations ll_rw_extents_stats_pp_fops;
52 struct file_operations ll_rw_offset_stats_fops;
54 static int ll_blksize_seq_show(struct seq_file *m, void *v)
56 struct super_block *sb = m->private;
57 struct obd_statfs osfs;
61 rc = ll_statfs_internal(sb, &osfs,
62 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
65 rc = seq_printf(m, "%u\n", osfs.os_bsize);
68 LPROC_SEQ_FOPS_RO(ll_blksize);
70 static int ll_kbytestotal_seq_show(struct seq_file *m, void *v)
72 struct super_block *sb = m->private;
73 struct obd_statfs osfs;
77 rc = ll_statfs_internal(sb, &osfs,
78 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
81 __u32 blk_size = osfs.os_bsize >> 10;
82 __u64 result = osfs.os_blocks;
84 while (blk_size >>= 1)
87 rc = seq_printf(m, LPU64"\n", result);
91 LPROC_SEQ_FOPS_RO(ll_kbytestotal);
93 static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
95 struct super_block *sb = m->private;
96 struct obd_statfs osfs;
100 rc = ll_statfs_internal(sb, &osfs,
101 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
104 __u32 blk_size = osfs.os_bsize >> 10;
105 __u64 result = osfs.os_bfree;
107 while (blk_size >>= 1)
110 rc = seq_printf(m, LPU64"\n", result);
114 LPROC_SEQ_FOPS_RO(ll_kbytesfree);
116 static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
118 struct super_block *sb = m->private;
119 struct obd_statfs osfs;
123 rc = ll_statfs_internal(sb, &osfs,
124 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
127 __u32 blk_size = osfs.os_bsize >> 10;
128 __u64 result = osfs.os_bavail;
130 while (blk_size >>= 1)
133 rc = seq_printf(m, LPU64"\n", result);
137 LPROC_SEQ_FOPS_RO(ll_kbytesavail);
139 static int ll_filestotal_seq_show(struct seq_file *m, void *v)
141 struct super_block *sb = m->private;
142 struct obd_statfs osfs;
146 rc = ll_statfs_internal(sb, &osfs,
147 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
150 rc = seq_printf(m, LPU64"\n", osfs.os_files);
153 LPROC_SEQ_FOPS_RO(ll_filestotal);
155 static int ll_filesfree_seq_show(struct seq_file *m, void *v)
157 struct super_block *sb = m->private;
158 struct obd_statfs osfs;
162 rc = ll_statfs_internal(sb, &osfs,
163 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
166 rc = seq_printf(m, LPU64"\n", osfs.os_ffree);
169 LPROC_SEQ_FOPS_RO(ll_filesfree);
171 static int ll_client_type_seq_show(struct seq_file *m, void *v)
173 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
176 LASSERT(sbi != NULL);
178 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
179 rc = seq_printf(m, "remote client\n");
181 rc = seq_printf(m, "local client\n");
184 LPROC_SEQ_FOPS_RO(ll_client_type);
186 static int ll_fstype_seq_show(struct seq_file *m, void *v)
188 struct super_block *sb = m->private;
191 return seq_printf(m, "%s\n", sb->s_type->name);
193 LPROC_SEQ_FOPS_RO(ll_fstype);
195 static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
197 struct super_block *sb = m->private;
200 return seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
202 LPROC_SEQ_FOPS_RO(ll_sb_uuid);
204 static int ll_xattr_cache_seq_show(struct seq_file *m, void *v)
206 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
208 return seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
211 static ssize_t ll_xattr_cache_seq_write(struct file *file,
212 const char __user *buffer,
213 size_t count, loff_t *off)
215 struct seq_file *m = file->private_data;
216 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
219 rc = lprocfs_write_helper(buffer, count, &val);
223 if (val != 0 && val != 1)
226 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
229 sbi->ll_xattr_cache_enabled = val;
233 LPROC_SEQ_FOPS(ll_xattr_cache);
235 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
237 struct super_block *sb = m->private;
240 * See description of statistical counters in struct cl_site, and
243 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
245 LPROC_SEQ_FOPS_RO(ll_site_stats);
247 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
249 struct super_block *sb = m->private;
250 struct ll_sb_info *sbi = ll_s2sbi(sb);
254 spin_lock(&sbi->ll_lock);
255 pages_number = sbi->ll_ra_info.ra_max_pages;
256 spin_unlock(&sbi->ll_lock);
258 mult = 1 << (20 - PAGE_CACHE_SHIFT);
259 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
263 ll_max_readahead_mb_seq_write(struct file *file, const char __user *buffer,
264 size_t count, loff_t *off)
266 struct seq_file *m = file->private_data;
267 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
273 mult = 1 << (20 - PAGE_CACHE_SHIFT);
274 rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
280 pages_number = (long)val;
282 if (pages_number < 0 || pages_number > totalram_pages / 2) {
284 CERROR("can't set file readahead more than %lu MB\n",
285 totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1));
289 spin_lock(&sbi->ll_lock);
290 sbi->ll_ra_info.ra_max_pages = pages_number;
291 spin_unlock(&sbi->ll_lock);
294 LPROC_SEQ_FOPS(ll_max_readahead_mb);
296 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
298 struct super_block *sb = m->private;
299 struct ll_sb_info *sbi = ll_s2sbi(sb);
303 spin_lock(&sbi->ll_lock);
304 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
305 spin_unlock(&sbi->ll_lock);
307 mult = 1 << (20 - PAGE_CACHE_SHIFT);
308 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
312 ll_max_readahead_per_file_mb_seq_write(struct file *file,
313 const char __user *buffer,
314 size_t count, loff_t *off)
316 struct seq_file *m = file->private_data;
317 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
318 int mult, rc, pages_number;
320 mult = 1 << (20 - PAGE_CACHE_SHIFT);
321 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
325 if (pages_number < 0 ||
326 pages_number > sbi->ll_ra_info.ra_max_pages) {
327 CERROR("can't set file readahead more than"
328 "max_read_ahead_mb %lu MB\n",
329 sbi->ll_ra_info.ra_max_pages);
333 spin_lock(&sbi->ll_lock);
334 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
335 spin_unlock(&sbi->ll_lock);
338 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
340 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *v)
342 struct super_block *sb = m->private;
343 struct ll_sb_info *sbi = ll_s2sbi(sb);
347 spin_lock(&sbi->ll_lock);
348 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
349 spin_unlock(&sbi->ll_lock);
351 mult = 1 << (20 - PAGE_CACHE_SHIFT);
352 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
356 ll_max_read_ahead_whole_mb_seq_write(struct file *file,
357 const char __user *buffer,
358 size_t count, loff_t *off)
360 struct seq_file *m = file->private_data;
361 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
362 int mult, rc, pages_number;
364 mult = 1 << (20 - PAGE_CACHE_SHIFT);
365 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
369 /* Cap this at the current max readahead window size, the readahead
370 * algorithm does this anyway so it's pointless to set it larger. */
371 if (pages_number < 0 ||
372 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
373 CERROR("can't set max_read_ahead_whole_mb more than "
374 "max_read_ahead_per_file_mb: %lu\n",
375 sbi->ll_ra_info.ra_max_pages_per_file >>
376 (20 - PAGE_CACHE_SHIFT));
380 spin_lock(&sbi->ll_lock);
381 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
382 spin_unlock(&sbi->ll_lock);
385 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
387 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
389 struct super_block *sb = m->private;
390 struct ll_sb_info *sbi = ll_s2sbi(sb);
391 struct cl_client_cache *cache = &sbi->ll_cache;
392 int shift = 20 - PAGE_CACHE_SHIFT;
396 max_cached_mb = cache->ccc_lru_max >> shift;
397 unused_mb = atomic_long_read(&cache->ccc_lru_left) >> shift;
400 "max_cached_mb: %ld\n"
403 "reclaim_count: %u\n",
404 atomic_read(&cache->ccc_users),
406 max_cached_mb - unused_mb,
408 cache->ccc_lru_shrinkers);
412 ll_max_cached_mb_seq_write(struct file *file, const char __user *buffer,
413 size_t count, loff_t *off)
415 struct seq_file *m = file->private_data;
416 struct super_block *sb = m->private;
417 struct ll_sb_info *sbi = ll_s2sbi(sb);
418 struct cl_client_cache *cache = &sbi->ll_cache;
430 if (count >= sizeof(kernbuf))
433 if (copy_from_user(kernbuf, buffer, count))
437 mult = 1 << (20 - PAGE_CACHE_SHIFT);
438 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
440 rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
446 pages_number = (long)val;
448 if (pages_number < 0 || pages_number > totalram_pages) {
449 CERROR("%s: can't set max cache more than %lu MB\n",
450 ll_get_fsname(sb, NULL, 0),
451 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
454 /* Allow enough cache so clients can make well-formed RPCs */
455 pages_number = max_t(long, pages_number, PTLRPC_MAX_BRW_PAGES);
457 spin_lock(&sbi->ll_lock);
458 diff = pages_number - cache->ccc_lru_max;
459 spin_unlock(&sbi->ll_lock);
461 /* easy - add more LRU slots. */
463 atomic_long_add(diff, &cache->ccc_lru_left);
467 env = cl_env_get(&refcheck);
475 /* reduce LRU budget from free slots. */
479 ov = atomic_long_read(&cache->ccc_lru_left);
483 nv = ov > diff ? ov - diff : 0;
484 rc = atomic_long_cmpxchg(&cache->ccc_lru_left, ov, nv);
485 if (likely(ov == rc)) {
495 if (sbi->ll_dt_exp == NULL) { /* being initialized */
500 /* difficult - have to ask OSCs to drop LRU slots. */
502 rc = obd_set_info_async(env, sbi->ll_dt_exp,
503 sizeof(KEY_CACHE_LRU_SHRINK),
504 KEY_CACHE_LRU_SHRINK,
505 sizeof(tmp), &tmp, NULL);
509 cl_env_put(env, &refcheck);
513 spin_lock(&sbi->ll_lock);
514 cache->ccc_lru_max = pages_number;
515 spin_unlock(&sbi->ll_lock);
518 atomic_long_add(nrpages, &cache->ccc_lru_left);
522 LPROC_SEQ_FOPS(ll_max_cached_mb);
524 static int ll_checksum_seq_show(struct seq_file *m, void *v)
526 struct super_block *sb = m->private;
527 struct ll_sb_info *sbi = ll_s2sbi(sb);
529 return seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
532 static ssize_t ll_checksum_seq_write(struct file *file,
533 const char __user *buffer,
534 size_t count, loff_t *off)
536 struct seq_file *m = file->private_data;
537 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
544 rc = lprocfs_write_helper(buffer, count, &val);
548 sbi->ll_flags |= LL_SBI_CHECKSUM;
550 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
552 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
553 KEY_CHECKSUM, sizeof(val), &val, NULL);
555 CWARN("Failed to set OSC checksum flags: %d\n", rc);
559 LPROC_SEQ_FOPS(ll_checksum);
561 static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
563 struct super_block *sb = m->private;
565 return seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
568 static ssize_t ll_max_rw_chunk_seq_write(struct file *file,
569 const char __user *buffer,
570 size_t count, loff_t *off)
572 struct seq_file *m = file->private_data;
573 struct super_block *sb = m->private;
576 rc = lprocfs_write_helper(buffer, count, &val);
579 ll_s2sbi(sb)->ll_max_rw_chunk = val;
582 LPROC_SEQ_FOPS(ll_max_rw_chunk);
584 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
586 struct super_block *sb = m->private;
588 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
589 return seq_printf(m, "%d\n",
590 ll_s2sbi(sb)->ll_stats_track_id);
591 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
592 return seq_printf(m, "0 (all)\n");
594 return seq_printf(m, "untracked\n");
598 static int ll_wr_track_id(const char __user *buffer, unsigned long count,
599 void *data, enum stats_track_type type)
601 struct super_block *sb = data;
604 rc = lprocfs_write_helper(buffer, count, &pid);
607 ll_s2sbi(sb)->ll_stats_track_id = pid;
609 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
611 ll_s2sbi(sb)->ll_stats_track_type = type;
612 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
616 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
618 return ll_rd_track_id(m, STATS_TRACK_PID);
621 static ssize_t ll_track_pid_seq_write(struct file *file,
622 const char __user *buffer,
623 size_t count, loff_t *off)
625 struct seq_file *seq = file->private_data;
626 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
628 LPROC_SEQ_FOPS(ll_track_pid);
630 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
632 return ll_rd_track_id(m, STATS_TRACK_PPID);
635 static ssize_t ll_track_ppid_seq_write(struct file *file,
636 const char __user *buffer,
637 size_t count, loff_t *off)
639 struct seq_file *seq = file->private_data;
640 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
642 LPROC_SEQ_FOPS(ll_track_ppid);
644 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
646 return ll_rd_track_id(m, STATS_TRACK_GID);
649 static ssize_t ll_track_gid_seq_write(struct file *file,
650 const char __user *buffer,
651 size_t count, loff_t *off)
653 struct seq_file *seq = file->private_data;
654 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
656 LPROC_SEQ_FOPS(ll_track_gid);
658 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
660 struct super_block *sb = m->private;
661 struct ll_sb_info *sbi = ll_s2sbi(sb);
663 return seq_printf(m, "%u\n", sbi->ll_sa_max);
666 static ssize_t ll_statahead_max_seq_write(struct file *file,
667 const char __user *buffer,
668 size_t count, loff_t *off)
670 struct seq_file *m = file->private_data;
671 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
674 rc = lprocfs_write_helper(buffer, count, &val);
678 if (val >= 0 && val <= LL_SA_RPC_MAX)
679 sbi->ll_sa_max = val;
681 CERROR("Bad statahead_max value %d. Valid values are in the "
682 "range [0, %d]\n", val, LL_SA_RPC_MAX);
686 LPROC_SEQ_FOPS(ll_statahead_max);
688 static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
690 struct super_block *sb = m->private;
691 struct ll_sb_info *sbi = ll_s2sbi(sb);
693 return seq_printf(m, "%u\n",
694 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
697 static ssize_t ll_statahead_agl_seq_write(struct file *file,
698 const char __user *buffer,
699 size_t count, loff_t *off)
701 struct seq_file *m = file->private_data;
702 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
705 rc = lprocfs_write_helper(buffer, count, &val);
710 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
712 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
716 LPROC_SEQ_FOPS(ll_statahead_agl);
718 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
720 struct super_block *sb = m->private;
721 struct ll_sb_info *sbi = ll_s2sbi(sb);
724 "statahead total: %u\n"
725 "statahead wrong: %u\n"
727 atomic_read(&sbi->ll_sa_total),
728 atomic_read(&sbi->ll_sa_wrong),
729 atomic_read(&sbi->ll_agl_total));
731 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
733 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
735 struct super_block *sb = m->private;
736 struct ll_sb_info *sbi = ll_s2sbi(sb);
738 return seq_printf(m, "%u\n",
739 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
742 static ssize_t ll_lazystatfs_seq_write(struct file *file,
743 const char __user *buffer,
744 size_t count, loff_t *off)
746 struct seq_file *m = file->private_data;
747 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
750 rc = lprocfs_write_helper(buffer, count, &val);
755 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
757 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
761 LPROC_SEQ_FOPS(ll_lazystatfs);
763 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
765 struct super_block *sb = m->private;
766 struct ll_sb_info *sbi = ll_s2sbi(sb);
770 rc = ll_get_max_mdsize(sbi, &ealen);
774 return seq_printf(m, "%u\n", ealen);
776 LPROC_SEQ_FOPS_RO(ll_max_easize);
778 static int ll_defult_easize_seq_show(struct seq_file *m, void *v)
780 struct super_block *sb = m->private;
781 struct ll_sb_info *sbi = ll_s2sbi(sb);
785 rc = ll_get_default_mdsize(sbi, &ealen);
789 return seq_printf(m, "%u\n", ealen);
791 LPROC_SEQ_FOPS_RO(ll_defult_easize);
793 static int ll_max_cookiesize_seq_show(struct seq_file *m, void *v)
795 struct super_block *sb = m->private;
796 struct ll_sb_info *sbi = ll_s2sbi(sb);
797 unsigned int cookielen;
800 rc = ll_get_max_cookiesize(sbi, &cookielen);
804 return seq_printf(m, "%u\n", cookielen);
806 LPROC_SEQ_FOPS_RO(ll_max_cookiesize);
808 static int ll_defult_cookiesize_seq_show(struct seq_file *m, void *v)
810 struct super_block *sb = m->private;
811 struct ll_sb_info *sbi = ll_s2sbi(sb);
812 unsigned int cookielen;
815 rc = ll_get_default_cookiesize(sbi, &cookielen);
819 return seq_printf(m, "%u\n", cookielen);
821 LPROC_SEQ_FOPS_RO(ll_defult_cookiesize);
823 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
825 const char *str[] = LL_SBI_FLAGS;
826 struct super_block *sb = m->private;
827 int flags = ll_s2sbi(sb)->ll_flags;
831 if (ARRAY_SIZE(str) <= i) {
832 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
833 "flags please.\n", ll_get_fsname(sb, NULL, 0));
838 seq_printf(m, "%s ", str[i]);
842 seq_printf(m, "\b\n");
845 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
847 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
849 struct super_block *sb = m->private;
850 struct ll_sb_info *sbi = ll_s2sbi(sb);
851 struct cl_client_cache *cache = &sbi->ll_cache;
855 pages = atomic_long_read(&cache->ccc_unstable_nr);
856 mb = (pages * PAGE_CACHE_SIZE) >> 20;
858 return seq_printf(m, "unstable_check: %8d\n"
859 "unstable_pages: %12ld\n"
860 "unstable_mb: %8d\n",
861 cache->ccc_unstable_check, pages, mb);
864 static ssize_t ll_unstable_stats_seq_write(struct file *file,
865 const char __user *buffer,
866 size_t count, loff_t *unused)
868 struct seq_file *seq = file->private_data;
869 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
875 if (count >= sizeof(kernbuf))
878 if (copy_from_user(kernbuf, buffer, count))
882 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
884 rc = lprocfs_write_helper(buffer, count, &val);
888 /* borrow lru lock to set the value */
889 spin_lock(&sbi->ll_cache.ccc_lru_lock);
890 sbi->ll_cache.ccc_unstable_check = !!val;
891 spin_unlock(&sbi->ll_cache.ccc_lru_lock);
895 LPROC_SEQ_FOPS(ll_unstable_stats);
897 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
899 struct super_block *sb = m->private;
900 struct ll_sb_info *sbi = ll_s2sbi(sb);
901 struct root_squash_info *squash = &sbi->ll_squash;
903 return seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
906 static ssize_t ll_root_squash_seq_write(struct file *file,
907 const char __user *buffer,
908 size_t count, loff_t *off)
910 struct seq_file *m = file->private_data;
911 struct super_block *sb = m->private;
912 struct ll_sb_info *sbi = ll_s2sbi(sb);
913 struct root_squash_info *squash = &sbi->ll_squash;
915 return lprocfs_wr_root_squash(buffer, count, squash,
916 ll_get_fsname(sb, NULL, 0));
918 LPROC_SEQ_FOPS(ll_root_squash);
920 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
922 struct super_block *sb = m->private;
923 struct ll_sb_info *sbi = ll_s2sbi(sb);
924 struct root_squash_info *squash = &sbi->ll_squash;
927 down_read(&squash->rsi_sem);
928 if (!list_empty(&squash->rsi_nosquash_nids)) {
929 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
930 &squash->rsi_nosquash_nids);
932 rc = seq_printf(m, "\n");
934 rc = seq_printf(m, "NONE\n");
936 up_read(&squash->rsi_sem);
941 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
942 const char __user *buffer,
943 size_t count, loff_t *off)
945 struct seq_file *m = file->private_data;
946 struct super_block *sb = m->private;
947 struct ll_sb_info *sbi = ll_s2sbi(sb);
948 struct root_squash_info *squash = &sbi->ll_squash;
951 rc = lprocfs_wr_nosquash_nids(buffer, count, squash,
952 ll_get_fsname(sb, NULL, 0));
956 ll_compute_rootsquash_state(sbi);
960 LPROC_SEQ_FOPS(ll_nosquash_nids);
962 struct lprocfs_seq_vars lprocfs_llite_obd_vars[] = {
964 .fops = &ll_sb_uuid_fops },
966 .fops = &ll_fstype_fops },
968 .fops = &ll_site_stats_fops },
969 { .name = "blocksize",
970 .fops = &ll_blksize_fops },
971 { .name = "kbytestotal",
972 .fops = &ll_kbytestotal_fops },
973 { .name = "kbytesfree",
974 .fops = &ll_kbytesfree_fops },
975 { .name = "kbytesavail",
976 .fops = &ll_kbytesavail_fops },
977 { .name = "filestotal",
978 .fops = &ll_filestotal_fops },
979 { .name = "filesfree",
980 .fops = &ll_filesfree_fops },
981 { .name = "client_type",
982 .fops = &ll_client_type_fops },
983 { .name = "max_read_ahead_mb",
984 .fops = &ll_max_readahead_mb_fops },
985 { .name = "max_read_ahead_per_file_mb",
986 .fops = &ll_max_readahead_per_file_mb_fops },
987 { .name = "max_read_ahead_whole_mb",
988 .fops = &ll_max_read_ahead_whole_mb_fops },
989 { .name = "max_cached_mb",
990 .fops = &ll_max_cached_mb_fops },
991 { .name = "checksum_pages",
992 .fops = &ll_checksum_fops },
993 { .name = "max_rw_chunk",
994 .fops = &ll_max_rw_chunk_fops },
995 { .name = "stats_track_pid",
996 .fops = &ll_track_pid_fops },
997 { .name = "stats_track_ppid",
998 .fops = &ll_track_ppid_fops },
999 { .name = "stats_track_gid",
1000 .fops = &ll_track_gid_fops },
1001 { .name = "statahead_max",
1002 .fops = &ll_statahead_max_fops },
1003 { .name = "statahead_agl",
1004 .fops = &ll_statahead_agl_fops },
1005 { .name = "statahead_stats",
1006 .fops = &ll_statahead_stats_fops },
1007 { .name = "lazystatfs",
1008 .fops = &ll_lazystatfs_fops },
1009 { .name = "max_easize",
1010 .fops = &ll_max_easize_fops },
1011 { .name = "default_easize",
1012 .fops = &ll_defult_easize_fops },
1013 { .name = "max_cookiesize",
1014 .fops = &ll_max_cookiesize_fops },
1015 { .name = "default_cookiesize",
1016 .fops = &ll_defult_cookiesize_fops },
1017 { .name = "sbi_flags",
1018 .fops = &ll_sbi_flags_fops },
1019 { .name = "xattr_cache",
1020 .fops = &ll_xattr_cache_fops },
1021 { .name = "unstable_stats",
1022 .fops = &ll_unstable_stats_fops },
1023 { .name = "root_squash",
1024 .fops = &ll_root_squash_fops },
1025 { .name = "nosquash_nids",
1026 .fops = &ll_nosquash_nids_fops },
1030 #define MAX_STRING_SIZE 128
1032 static const struct llite_file_opcode {
1036 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
1037 /* file operation */
1038 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
1039 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
1040 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1042 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1044 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1046 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1048 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1050 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1052 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
1053 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
1054 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
1055 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
1056 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
1057 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
1058 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
1059 /* inode operation */
1060 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
1061 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
1062 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
1063 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
1064 /* dir inode operation */
1065 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
1066 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
1067 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
1068 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
1069 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
1070 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
1071 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
1072 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
1073 /* special inode operation */
1074 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
1075 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
1076 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
1077 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
1078 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
1079 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
1080 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
1081 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
1084 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
1088 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
1089 lprocfs_counter_add(sbi->ll_stats, op, count);
1090 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
1091 sbi->ll_stats_track_id == current->pid)
1092 lprocfs_counter_add(sbi->ll_stats, op, count);
1093 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
1094 sbi->ll_stats_track_id == current->parent->pid)
1095 lprocfs_counter_add(sbi->ll_stats, op, count);
1096 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
1097 sbi->ll_stats_track_id ==
1098 from_kgid(&init_user_ns, current_gid()))
1099 lprocfs_counter_add(sbi->ll_stats, op, count);
1101 EXPORT_SYMBOL(ll_stats_ops_tally);
1103 static const char *ra_stat_string[] = {
1104 [RA_STAT_HIT] = "hits",
1105 [RA_STAT_MISS] = "misses",
1106 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
1107 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
1108 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
1109 [RA_STAT_FAILED_MATCH] = "failed lock match",
1110 [RA_STAT_DISCARDED] = "read but discarded",
1111 [RA_STAT_ZERO_LEN] = "zero length file",
1112 [RA_STAT_ZERO_WINDOW] = "zero size window",
1113 [RA_STAT_EOF] = "read-ahead to EOF",
1114 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
1115 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
1116 [RA_STAT_FAILED_REACH_END] = "failed to reach end"
1119 LPROC_SEQ_FOPS_RO_TYPE(llite, name);
1120 LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
1122 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
1123 struct super_block *sb, char *osc, char *mdc)
1125 struct lprocfs_seq_vars lvars[2];
1126 struct lustre_sb_info *lsi = s2lsi(sb);
1127 struct ll_sb_info *sbi = ll_s2sbi(sb);
1128 struct obd_device *obd;
1129 struct proc_dir_entry *dir;
1130 char name[MAX_STRING_SIZE + 1], *ptr;
1131 int err, id, len, rc;
1134 memset(lvars, 0, sizeof(lvars));
1136 name[MAX_STRING_SIZE] = '\0';
1137 lvars[0].name = name;
1139 LASSERT(sbi != NULL);
1140 LASSERT(mdc != NULL);
1141 LASSERT(osc != NULL);
1144 len = strlen(lsi->lsi_lmd->lmd_profile);
1145 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
1146 if (ptr && (strcmp(ptr, "-client") == 0))
1150 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
1151 lsi->lsi_lmd->lmd_profile, sb);
1153 sbi->ll_proc_root = lprocfs_seq_register(name, parent, NULL, NULL);
1154 if (IS_ERR(sbi->ll_proc_root)) {
1155 err = PTR_ERR(sbi->ll_proc_root);
1156 sbi->ll_proc_root = NULL;
1160 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
1161 &vvp_dump_pgcache_file_ops, sbi);
1163 CWARN("Error adding the dump_page_cache file\n");
1165 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
1166 &ll_rw_extents_stats_fops, sbi);
1168 CWARN("Error adding the extent_stats file\n");
1170 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
1171 0644, &ll_rw_extents_stats_pp_fops, sbi);
1173 CWARN("Error adding the extents_stats_per_process file\n");
1175 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
1176 &ll_rw_offset_stats_fops, sbi);
1178 CWARN("Error adding the offset_stats file\n");
1180 /* File operations stats */
1181 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1182 LPROCFS_STATS_FLAG_NONE);
1183 if (sbi->ll_stats == NULL)
1184 GOTO(out, err = -ENOMEM);
1185 /* do counter init */
1186 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1187 __u32 type = llite_opcode_table[id].type;
1189 if (type & LPROCFS_TYPE_REGS)
1191 else if (type & LPROCFS_TYPE_BYTES)
1193 else if (type & LPROCFS_TYPE_PAGES)
1195 lprocfs_counter_init(sbi->ll_stats,
1196 llite_opcode_table[id].opcode,
1197 (type & LPROCFS_CNTR_AVGMINMAX),
1198 llite_opcode_table[id].opname, ptr);
1200 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
1204 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1205 LPROCFS_STATS_FLAG_NONE);
1206 if (sbi->ll_ra_stats == NULL)
1207 GOTO(out, err = -ENOMEM);
1209 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1210 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1211 ra_stat_string[id], "pages");
1212 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
1218 err = lprocfs_seq_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1223 obd = class_name2obd(mdc);
1225 LASSERT(obd != NULL);
1226 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1227 LASSERT(obd->obd_type->typ_name != NULL);
1229 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1231 GOTO(out, err = -ENOMEM);
1233 snprintf(name, MAX_STRING_SIZE, "common_name");
1234 lvars[0].fops = &llite_name_fops;
1235 err = lprocfs_seq_add_vars(dir, lvars, obd);
1239 snprintf(name, MAX_STRING_SIZE, "uuid");
1240 lvars[0].fops = &llite_uuid_fops;
1241 err = lprocfs_seq_add_vars(dir, lvars, obd);
1246 obd = class_name2obd(osc);
1248 LASSERT(obd != NULL);
1249 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1250 LASSERT(obd->obd_type->typ_name != NULL);
1252 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1254 GOTO(out, err = -ENOMEM);
1256 snprintf(name, MAX_STRING_SIZE, "common_name");
1257 lvars[0].fops = &llite_name_fops;
1258 err = lprocfs_seq_add_vars(dir, lvars, obd);
1262 snprintf(name, MAX_STRING_SIZE, "uuid");
1263 lvars[0].fops = &llite_uuid_fops;
1264 err = lprocfs_seq_add_vars(dir, lvars, obd);
1267 lprocfs_remove(&sbi->ll_proc_root);
1268 lprocfs_free_stats(&sbi->ll_ra_stats);
1269 lprocfs_free_stats(&sbi->ll_stats);
1274 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1276 if (sbi->ll_proc_root) {
1277 lprocfs_remove(&sbi->ll_proc_root);
1278 lprocfs_free_stats(&sbi->ll_ra_stats);
1279 lprocfs_free_stats(&sbi->ll_stats);
1282 #undef MAX_STRING_SIZE
1284 #define pct(a,b) (b ? a * 100 / b : 0)
1286 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1287 struct seq_file *seq, int which)
1289 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1290 unsigned long start, end, r, w;
1291 char *unitp = "KMGTPEZY";
1293 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1299 for(i = 0; i < LL_HIST_MAX; i++) {
1300 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1301 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1304 for(i = 0; i < LL_HIST_MAX; i++) {
1305 r = pp_info->pp_r_hist.oh_buckets[i];
1306 w = pp_info->pp_w_hist.oh_buckets[i];
1309 end = 1 << (i + LL_HIST_START - units);
1310 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1311 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1312 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1313 r, pct(r, read_tot), pct(read_cum, read_tot),
1314 w, pct(w, write_tot), pct(write_cum, write_tot));
1316 if (start == 1<<10) {
1321 if (read_cum == read_tot && write_cum == write_tot)
1326 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1329 struct ll_sb_info *sbi = seq->private;
1330 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1333 do_gettimeofday(&now);
1335 if (!sbi->ll_rw_stats_on) {
1336 seq_printf(seq, "disabled\n"
1337 "write anything in this file to activate, "
1338 "then 0 or \"[D/d]isabled\" to deactivate\n");
1341 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1342 now.tv_sec, now.tv_usec);
1343 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1344 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1345 "extents", "calls", "%", "cum%",
1346 "calls", "%", "cum%");
1347 spin_lock(&sbi->ll_pp_extent_lock);
1348 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1349 if (io_extents->pp_extents[k].pid != 0) {
1350 seq_printf(seq, "\nPID: %d\n",
1351 io_extents->pp_extents[k].pid);
1352 ll_display_extents_info(io_extents, seq, k);
1355 spin_unlock(&sbi->ll_pp_extent_lock);
1359 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1360 const char __user *buf,
1364 struct seq_file *seq = file->private_data;
1365 struct ll_sb_info *sbi = seq->private;
1366 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1368 int value = 1, rc = 0;
1373 rc = lprocfs_write_helper(buf, len, &value);
1374 if (rc < 0 && len < 16) {
1377 if (copy_from_user(kernbuf, buf, len))
1381 if (kernbuf[len - 1] == '\n')
1382 kernbuf[len - 1] = 0;
1384 if (strcmp(kernbuf, "disabled") == 0 ||
1385 strcmp(kernbuf, "Disabled") == 0)
1390 sbi->ll_rw_stats_on = 0;
1392 sbi->ll_rw_stats_on = 1;
1394 spin_lock(&sbi->ll_pp_extent_lock);
1395 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1396 io_extents->pp_extents[i].pid = 0;
1397 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1398 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1400 spin_unlock(&sbi->ll_pp_extent_lock);
1404 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1406 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1409 struct ll_sb_info *sbi = seq->private;
1410 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1412 do_gettimeofday(&now);
1414 if (!sbi->ll_rw_stats_on) {
1415 seq_printf(seq, "disabled\n"
1416 "write anything in this file to activate, "
1417 "then 0 or \"[D/d]isabled\" to deactivate\n");
1420 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1421 now.tv_sec, now.tv_usec);
1423 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1424 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1425 "extents", "calls", "%", "cum%",
1426 "calls", "%", "cum%");
1427 spin_lock(&sbi->ll_lock);
1428 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1429 spin_unlock(&sbi->ll_lock);
1434 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1435 const char __user *buf,
1436 size_t len, loff_t *off)
1438 struct seq_file *seq = file->private_data;
1439 struct ll_sb_info *sbi = seq->private;
1440 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1442 int value = 1, rc = 0;
1447 rc = lprocfs_write_helper(buf, len, &value);
1448 if (rc < 0 && len < 16) {
1451 if (copy_from_user(kernbuf, buf, len))
1455 if (kernbuf[len - 1] == '\n')
1456 kernbuf[len - 1] = 0;
1458 if (strcmp(kernbuf, "disabled") == 0 ||
1459 strcmp(kernbuf, "Disabled") == 0)
1464 sbi->ll_rw_stats_on = 0;
1466 sbi->ll_rw_stats_on = 1;
1468 spin_lock(&sbi->ll_pp_extent_lock);
1469 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1470 io_extents->pp_extents[i].pid = 0;
1471 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1472 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1474 spin_unlock(&sbi->ll_pp_extent_lock);
1478 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1480 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1481 struct ll_file_data *file, loff_t pos,
1482 size_t count, int rw)
1485 struct ll_rw_process_info *process;
1486 struct ll_rw_process_info *offset;
1487 int *off_count = &sbi->ll_rw_offset_entry_count;
1488 int *process_count = &sbi->ll_offset_process_count;
1489 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1491 if(!sbi->ll_rw_stats_on)
1493 process = sbi->ll_rw_process_info;
1494 offset = sbi->ll_rw_offset_info;
1496 spin_lock(&sbi->ll_pp_extent_lock);
1497 /* Extent statistics */
1498 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1499 if(io_extents->pp_extents[i].pid == pid) {
1507 sbi->ll_extent_process_count =
1508 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1509 cur = sbi->ll_extent_process_count;
1510 io_extents->pp_extents[cur].pid = pid;
1511 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1512 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1515 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1516 (i < (LL_HIST_MAX - 1)); i++);
1518 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1519 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1521 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1522 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1524 spin_unlock(&sbi->ll_pp_extent_lock);
1526 spin_lock(&sbi->ll_process_lock);
1527 /* Offset statistics */
1528 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1529 if (process[i].rw_pid == pid) {
1530 if (process[i].rw_last_file != file) {
1531 process[i].rw_range_start = pos;
1532 process[i].rw_last_file_pos = pos + count;
1533 process[i].rw_smallest_extent = count;
1534 process[i].rw_largest_extent = count;
1535 process[i].rw_offset = 0;
1536 process[i].rw_last_file = file;
1537 spin_unlock(&sbi->ll_process_lock);
1540 if (process[i].rw_last_file_pos != pos) {
1542 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1543 offset[*off_count].rw_op = process[i].rw_op;
1544 offset[*off_count].rw_pid = pid;
1545 offset[*off_count].rw_range_start =
1546 process[i].rw_range_start;
1547 offset[*off_count].rw_range_end =
1548 process[i].rw_last_file_pos;
1549 offset[*off_count].rw_smallest_extent =
1550 process[i].rw_smallest_extent;
1551 offset[*off_count].rw_largest_extent =
1552 process[i].rw_largest_extent;
1553 offset[*off_count].rw_offset =
1554 process[i].rw_offset;
1555 process[i].rw_op = rw;
1556 process[i].rw_range_start = pos;
1557 process[i].rw_smallest_extent = count;
1558 process[i].rw_largest_extent = count;
1559 process[i].rw_offset = pos -
1560 process[i].rw_last_file_pos;
1562 if(process[i].rw_smallest_extent > count)
1563 process[i].rw_smallest_extent = count;
1564 if(process[i].rw_largest_extent < count)
1565 process[i].rw_largest_extent = count;
1566 process[i].rw_last_file_pos = pos + count;
1567 spin_unlock(&sbi->ll_process_lock);
1571 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1572 process[*process_count].rw_pid = pid;
1573 process[*process_count].rw_op = rw;
1574 process[*process_count].rw_range_start = pos;
1575 process[*process_count].rw_last_file_pos = pos + count;
1576 process[*process_count].rw_smallest_extent = count;
1577 process[*process_count].rw_largest_extent = count;
1578 process[*process_count].rw_offset = 0;
1579 process[*process_count].rw_last_file = file;
1580 spin_unlock(&sbi->ll_process_lock);
1583 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1586 struct ll_sb_info *sbi = seq->private;
1587 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1588 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1591 do_gettimeofday(&now);
1593 if (!sbi->ll_rw_stats_on) {
1594 seq_printf(seq, "disabled\n"
1595 "write anything in this file to activate, "
1596 "then 0 or \"[D/d]isabled\" to deactivate\n");
1599 spin_lock(&sbi->ll_process_lock);
1601 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1602 now.tv_sec, now.tv_usec);
1603 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1604 "R/W", "PID", "RANGE START", "RANGE END",
1605 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1607 /* We stored the discontiguous offsets here; print them first */
1608 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1609 if (offset[i].rw_pid != 0)
1611 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1612 offset[i].rw_op == READ ? 'R' : 'W',
1614 offset[i].rw_range_start,
1615 offset[i].rw_range_end,
1616 (unsigned long)offset[i].rw_smallest_extent,
1617 (unsigned long)offset[i].rw_largest_extent,
1618 offset[i].rw_offset);
1621 /* Then print the current offsets for each process */
1622 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1623 if (process[i].rw_pid != 0)
1625 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1626 process[i].rw_op == READ ? 'R' : 'W',
1628 process[i].rw_range_start,
1629 process[i].rw_last_file_pos,
1630 (unsigned long)process[i].rw_smallest_extent,
1631 (unsigned long)process[i].rw_largest_extent,
1632 process[i].rw_offset);
1634 spin_unlock(&sbi->ll_process_lock);
1639 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
1640 const char __user *buf,
1641 size_t len, loff_t *off)
1643 struct seq_file *seq = file->private_data;
1644 struct ll_sb_info *sbi = seq->private;
1645 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1646 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1647 int value = 1, rc = 0;
1652 rc = lprocfs_write_helper(buf, len, &value);
1654 if (rc < 0 && len < 16) {
1657 if (copy_from_user(kernbuf, buf, len))
1661 if (kernbuf[len - 1] == '\n')
1662 kernbuf[len - 1] = 0;
1664 if (strcmp(kernbuf, "disabled") == 0 ||
1665 strcmp(kernbuf, "Disabled") == 0)
1670 sbi->ll_rw_stats_on = 0;
1672 sbi->ll_rw_stats_on = 1;
1674 spin_lock(&sbi->ll_process_lock);
1675 sbi->ll_offset_process_count = 0;
1676 sbi->ll_rw_offset_entry_count = 0;
1677 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1678 LL_PROCESS_HIST_MAX);
1679 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1680 LL_OFFSET_HIST_MAX);
1681 spin_unlock(&sbi->ll_process_lock);
1686 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1687 #endif /* LPROCFS */