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, const char *buffer,
212 size_t count, loff_t *off)
214 struct seq_file *m = file->private_data;
215 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
218 rc = lprocfs_write_helper(buffer, count, &val);
222 if (val != 0 && val != 1)
225 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
228 sbi->ll_xattr_cache_enabled = val;
232 LPROC_SEQ_FOPS(ll_xattr_cache);
234 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
236 struct super_block *sb = m->private;
239 * See description of statistical counters in struct cl_site, and
242 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
244 LPROC_SEQ_FOPS_RO(ll_site_stats);
246 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
248 struct super_block *sb = m->private;
249 struct ll_sb_info *sbi = ll_s2sbi(sb);
253 spin_lock(&sbi->ll_lock);
254 pages_number = sbi->ll_ra_info.ra_max_pages;
255 spin_unlock(&sbi->ll_lock);
257 mult = 1 << (20 - PAGE_CACHE_SHIFT);
258 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
262 ll_max_readahead_mb_seq_write(struct file *file, const char *buffer,
263 size_t count, loff_t *off)
265 struct seq_file *m = file->private_data;
266 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
267 int mult, rc, pages_number;
269 mult = 1 << (20 - PAGE_CACHE_SHIFT);
270 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
274 if (pages_number < 0 || pages_number > totalram_pages / 2) {
276 CERROR("can't set file readahead more than %lu MB\n",
277 totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1));
281 spin_lock(&sbi->ll_lock);
282 sbi->ll_ra_info.ra_max_pages = pages_number;
283 spin_unlock(&sbi->ll_lock);
286 LPROC_SEQ_FOPS(ll_max_readahead_mb);
288 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
290 struct super_block *sb = m->private;
291 struct ll_sb_info *sbi = ll_s2sbi(sb);
295 spin_lock(&sbi->ll_lock);
296 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
297 spin_unlock(&sbi->ll_lock);
299 mult = 1 << (20 - PAGE_CACHE_SHIFT);
300 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
304 ll_max_readahead_per_file_mb_seq_write(struct file *file, const char *buffer,
305 size_t count, loff_t *off)
307 struct seq_file *m = file->private_data;
308 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
309 int mult, rc, pages_number;
311 mult = 1 << (20 - PAGE_CACHE_SHIFT);
312 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
316 if (pages_number < 0 ||
317 pages_number > sbi->ll_ra_info.ra_max_pages) {
318 CERROR("can't set file readahead more than"
319 "max_read_ahead_mb %lu MB\n",
320 sbi->ll_ra_info.ra_max_pages);
324 spin_lock(&sbi->ll_lock);
325 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
326 spin_unlock(&sbi->ll_lock);
329 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
331 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *v)
333 struct super_block *sb = m->private;
334 struct ll_sb_info *sbi = ll_s2sbi(sb);
338 spin_lock(&sbi->ll_lock);
339 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
340 spin_unlock(&sbi->ll_lock);
342 mult = 1 << (20 - PAGE_CACHE_SHIFT);
343 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
347 ll_max_read_ahead_whole_mb_seq_write(struct file *file, const char *buffer,
348 size_t count, loff_t *off)
350 struct seq_file *m = file->private_data;
351 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
352 int mult, rc, pages_number;
354 mult = 1 << (20 - PAGE_CACHE_SHIFT);
355 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
359 /* Cap this at the current max readahead window size, the readahead
360 * algorithm does this anyway so it's pointless to set it larger. */
361 if (pages_number < 0 ||
362 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
363 CERROR("can't set max_read_ahead_whole_mb more than "
364 "max_read_ahead_per_file_mb: %lu\n",
365 sbi->ll_ra_info.ra_max_pages_per_file >>
366 (20 - PAGE_CACHE_SHIFT));
370 spin_lock(&sbi->ll_lock);
371 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
372 spin_unlock(&sbi->ll_lock);
375 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
377 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
379 struct super_block *sb = m->private;
380 struct ll_sb_info *sbi = ll_s2sbi(sb);
381 struct cl_client_cache *cache = &sbi->ll_cache;
382 int shift = 20 - PAGE_CACHE_SHIFT;
386 max_cached_mb = cache->ccc_lru_max >> shift;
387 unused_mb = atomic_read(&cache->ccc_lru_left) >> shift;
390 "max_cached_mb: %d\n"
393 "reclaim_count: %u\n",
394 atomic_read(&cache->ccc_users),
396 max_cached_mb - unused_mb,
398 cache->ccc_lru_shrinkers);
402 ll_max_cached_mb_seq_write(struct file *file, const char __user *buffer,
403 size_t count, loff_t *off)
405 struct seq_file *m = file->private_data;
406 struct super_block *sb = m->private;
407 struct ll_sb_info *sbi = ll_s2sbi(sb);
408 struct cl_client_cache *cache = &sbi->ll_cache;
411 int mult, rc, pages_number;
417 if (count >= sizeof(kernbuf))
420 if (copy_from_user(kernbuf, buffer, count))
424 mult = 1 << (20 - PAGE_CACHE_SHIFT);
425 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
427 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
431 if (pages_number < 0 || pages_number > totalram_pages) {
432 CERROR("%s: can't set max cache more than %lu MB\n",
433 ll_get_fsname(sb, NULL, 0),
434 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
438 spin_lock(&sbi->ll_lock);
439 diff = pages_number - cache->ccc_lru_max;
440 spin_unlock(&sbi->ll_lock);
442 /* easy - add more LRU slots. */
444 atomic_add(diff, &cache->ccc_lru_left);
448 env = cl_env_get(&refcheck);
456 /* reduce LRU budget from free slots. */
460 ov = atomic_read(&cache->ccc_lru_left);
464 nv = ov > diff ? ov - diff : 0;
465 rc = atomic_cmpxchg(&cache->ccc_lru_left, ov, nv);
466 if (likely(ov == rc)) {
476 if (sbi->ll_dt_exp == NULL) { /* being initialized */
481 /* difficult - have to ask OSCs to drop LRU slots. */
483 rc = obd_set_info_async(env, sbi->ll_dt_exp,
484 sizeof(KEY_CACHE_LRU_SHRINK),
485 KEY_CACHE_LRU_SHRINK,
486 sizeof(tmp), &tmp, NULL);
490 cl_env_put(env, &refcheck);
494 spin_lock(&sbi->ll_lock);
495 cache->ccc_lru_max = pages_number;
496 spin_unlock(&sbi->ll_lock);
499 atomic_add(nrpages, &cache->ccc_lru_left);
503 LPROC_SEQ_FOPS(ll_max_cached_mb);
505 static int ll_checksum_seq_show(struct seq_file *m, void *v)
507 struct super_block *sb = m->private;
508 struct ll_sb_info *sbi = ll_s2sbi(sb);
510 return seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
513 static ssize_t ll_checksum_seq_write(struct file *file, const char *buffer,
514 size_t count, loff_t *off)
516 struct seq_file *m = file->private_data;
517 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
524 rc = lprocfs_write_helper(buffer, count, &val);
528 sbi->ll_flags |= LL_SBI_CHECKSUM;
530 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
532 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
533 KEY_CHECKSUM, sizeof(val), &val, NULL);
535 CWARN("Failed to set OSC checksum flags: %d\n", rc);
539 LPROC_SEQ_FOPS(ll_checksum);
541 static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
543 struct super_block *sb = m->private;
545 return seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
548 static ssize_t ll_max_rw_chunk_seq_write(struct file *file, const char *buffer,
549 size_t count, loff_t *off)
551 struct seq_file *m = file->private_data;
552 struct super_block *sb = m->private;
555 rc = lprocfs_write_helper(buffer, count, &val);
558 ll_s2sbi(sb)->ll_max_rw_chunk = val;
561 LPROC_SEQ_FOPS(ll_max_rw_chunk);
563 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
565 struct super_block *sb = m->private;
567 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
568 return seq_printf(m, "%d\n",
569 ll_s2sbi(sb)->ll_stats_track_id);
570 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
571 return seq_printf(m, "0 (all)\n");
573 return seq_printf(m, "untracked\n");
577 static int ll_wr_track_id(const char *buffer, unsigned long count, void *data,
578 enum stats_track_type type)
580 struct super_block *sb = data;
583 rc = lprocfs_write_helper(buffer, count, &pid);
586 ll_s2sbi(sb)->ll_stats_track_id = pid;
588 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
590 ll_s2sbi(sb)->ll_stats_track_type = type;
591 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
595 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
597 return ll_rd_track_id(m, STATS_TRACK_PID);
600 static ssize_t ll_track_pid_seq_write(struct file *file, const char *buffer,
601 size_t count, loff_t *off)
603 struct seq_file *seq = file->private_data;
604 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
606 LPROC_SEQ_FOPS(ll_track_pid);
608 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
610 return ll_rd_track_id(m, STATS_TRACK_PPID);
613 static ssize_t ll_track_ppid_seq_write(struct file *file, const char *buffer,
614 size_t count, loff_t *off)
616 struct seq_file *seq = file->private_data;
617 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
619 LPROC_SEQ_FOPS(ll_track_ppid);
621 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
623 return ll_rd_track_id(m, STATS_TRACK_GID);
626 static ssize_t ll_track_gid_seq_write(struct file *file, const char *buffer,
627 size_t count, loff_t *off)
629 struct seq_file *seq = file->private_data;
630 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
632 LPROC_SEQ_FOPS(ll_track_gid);
634 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
636 struct super_block *sb = m->private;
637 struct ll_sb_info *sbi = ll_s2sbi(sb);
639 return seq_printf(m, "%u\n", sbi->ll_sa_max);
642 static ssize_t ll_statahead_max_seq_write(struct file *file, const char *buffer,
643 size_t count, loff_t *off)
645 struct seq_file *m = file->private_data;
646 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
649 rc = lprocfs_write_helper(buffer, count, &val);
653 if (val >= 0 && val <= LL_SA_RPC_MAX)
654 sbi->ll_sa_max = val;
656 CERROR("Bad statahead_max value %d. Valid values are in the "
657 "range [0, %d]\n", val, LL_SA_RPC_MAX);
661 LPROC_SEQ_FOPS(ll_statahead_max);
663 static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
665 struct super_block *sb = m->private;
666 struct ll_sb_info *sbi = ll_s2sbi(sb);
668 return seq_printf(m, "%u\n",
669 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
672 static ssize_t ll_statahead_agl_seq_write(struct file *file, const char *buffer,
673 size_t count, loff_t *off)
675 struct seq_file *m = file->private_data;
676 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
679 rc = lprocfs_write_helper(buffer, count, &val);
684 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
686 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
690 LPROC_SEQ_FOPS(ll_statahead_agl);
692 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
694 struct super_block *sb = m->private;
695 struct ll_sb_info *sbi = ll_s2sbi(sb);
698 "statahead total: %u\n"
699 "statahead wrong: %u\n"
701 atomic_read(&sbi->ll_sa_total),
702 atomic_read(&sbi->ll_sa_wrong),
703 atomic_read(&sbi->ll_agl_total));
705 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
707 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
709 struct super_block *sb = m->private;
710 struct ll_sb_info *sbi = ll_s2sbi(sb);
712 return seq_printf(m, "%u\n",
713 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
716 static ssize_t ll_lazystatfs_seq_write(struct file *file, const char *buffer,
717 size_t count, loff_t *off)
719 struct seq_file *m = file->private_data;
720 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
723 rc = lprocfs_write_helper(buffer, count, &val);
728 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
730 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
734 LPROC_SEQ_FOPS(ll_lazystatfs);
736 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
738 struct super_block *sb = m->private;
739 struct ll_sb_info *sbi = ll_s2sbi(sb);
743 rc = ll_get_max_mdsize(sbi, &ealen);
747 return seq_printf(m, "%u\n", ealen);
749 LPROC_SEQ_FOPS_RO(ll_max_easize);
751 static int ll_defult_easize_seq_show(struct seq_file *m, void *v)
753 struct super_block *sb = m->private;
754 struct ll_sb_info *sbi = ll_s2sbi(sb);
758 rc = ll_get_default_mdsize(sbi, &ealen);
762 return seq_printf(m, "%u\n", ealen);
764 LPROC_SEQ_FOPS_RO(ll_defult_easize);
766 static int ll_max_cookiesize_seq_show(struct seq_file *m, void *v)
768 struct super_block *sb = m->private;
769 struct ll_sb_info *sbi = ll_s2sbi(sb);
770 unsigned int cookielen;
773 rc = ll_get_max_cookiesize(sbi, &cookielen);
777 return seq_printf(m, "%u\n", cookielen);
779 LPROC_SEQ_FOPS_RO(ll_max_cookiesize);
781 static int ll_defult_cookiesize_seq_show(struct seq_file *m, void *v)
783 struct super_block *sb = m->private;
784 struct ll_sb_info *sbi = ll_s2sbi(sb);
785 unsigned int cookielen;
788 rc = ll_get_default_cookiesize(sbi, &cookielen);
792 return seq_printf(m, "%u\n", cookielen);
794 LPROC_SEQ_FOPS_RO(ll_defult_cookiesize);
796 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
798 const char *str[] = LL_SBI_FLAGS;
799 struct super_block *sb = m->private;
800 int flags = ll_s2sbi(sb)->ll_flags;
804 if (ARRAY_SIZE(str) <= i) {
805 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
806 "flags please.\n", ll_get_fsname(sb, NULL, 0));
811 seq_printf(m, "%s ", str[i]);
815 seq_printf(m, "\b\n");
818 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
820 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
822 struct super_block *sb = m->private;
823 struct ll_sb_info *sbi = ll_s2sbi(sb);
824 struct cl_client_cache *cache = &sbi->ll_cache;
827 pages = atomic_read(&cache->ccc_unstable_nr);
828 mb = (pages * PAGE_CACHE_SIZE) >> 20;
830 return seq_printf(m, "unstable_check: %8d\n"
831 "unstable_pages: %8d\n"
832 "unstable_mb: %8d\n",
833 cache->ccc_unstable_check, pages, mb);
836 static ssize_t ll_unstable_stats_seq_write(struct file *file,
837 const char __user *buffer,
838 size_t count, loff_t *unused)
840 struct seq_file *seq = file->private_data;
841 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
847 if (count >= sizeof(kernbuf))
850 if (copy_from_user(kernbuf, buffer, count))
854 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
856 rc = lprocfs_write_helper(buffer, count, &val);
860 /* borrow lru lock to set the value */
861 spin_lock(&sbi->ll_cache.ccc_lru_lock);
862 sbi->ll_cache.ccc_unstable_check = !!val;
863 spin_unlock(&sbi->ll_cache.ccc_lru_lock);
867 LPROC_SEQ_FOPS(ll_unstable_stats);
869 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
871 struct super_block *sb = m->private;
872 struct ll_sb_info *sbi = ll_s2sbi(sb);
873 struct root_squash_info *squash = &sbi->ll_squash;
875 return seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
878 static ssize_t ll_root_squash_seq_write(struct file *file,
879 const char __user *buffer,
880 size_t count, loff_t *off)
882 struct seq_file *m = file->private_data;
883 struct super_block *sb = m->private;
884 struct ll_sb_info *sbi = ll_s2sbi(sb);
885 struct root_squash_info *squash = &sbi->ll_squash;
887 return lprocfs_wr_root_squash(buffer, count, squash,
888 ll_get_fsname(sb, NULL, 0));
890 LPROC_SEQ_FOPS(ll_root_squash);
892 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
894 struct super_block *sb = m->private;
895 struct ll_sb_info *sbi = ll_s2sbi(sb);
896 struct root_squash_info *squash = &sbi->ll_squash;
899 down_read(&squash->rsi_sem);
900 if (!list_empty(&squash->rsi_nosquash_nids)) {
901 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
902 &squash->rsi_nosquash_nids);
904 rc = seq_printf(m, "\n");
906 rc = seq_printf(m, "NONE\n");
908 up_read(&squash->rsi_sem);
913 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
914 const char __user *buffer,
915 size_t count, loff_t *off)
917 struct seq_file *m = file->private_data;
918 struct super_block *sb = m->private;
919 struct ll_sb_info *sbi = ll_s2sbi(sb);
920 struct root_squash_info *squash = &sbi->ll_squash;
923 rc = lprocfs_wr_nosquash_nids(buffer, count, squash,
924 ll_get_fsname(sb, NULL, 0));
928 ll_compute_rootsquash_state(sbi);
932 LPROC_SEQ_FOPS(ll_nosquash_nids);
934 struct lprocfs_seq_vars lprocfs_llite_obd_vars[] = {
936 .fops = &ll_sb_uuid_fops },
938 .fops = &ll_fstype_fops },
940 .fops = &ll_site_stats_fops },
941 { .name = "blocksize",
942 .fops = &ll_blksize_fops },
943 { .name = "kbytestotal",
944 .fops = &ll_kbytestotal_fops },
945 { .name = "kbytesfree",
946 .fops = &ll_kbytesfree_fops },
947 { .name = "kbytesavail",
948 .fops = &ll_kbytesavail_fops },
949 { .name = "filestotal",
950 .fops = &ll_filestotal_fops },
951 { .name = "filesfree",
952 .fops = &ll_filesfree_fops },
953 { .name = "client_type",
954 .fops = &ll_client_type_fops },
955 { .name = "max_read_ahead_mb",
956 .fops = &ll_max_readahead_mb_fops },
957 { .name = "max_read_ahead_per_file_mb",
958 .fops = &ll_max_readahead_per_file_mb_fops },
959 { .name = "max_read_ahead_whole_mb",
960 .fops = &ll_max_read_ahead_whole_mb_fops },
961 { .name = "max_cached_mb",
962 .fops = &ll_max_cached_mb_fops },
963 { .name = "checksum_pages",
964 .fops = &ll_checksum_fops },
965 { .name = "max_rw_chunk",
966 .fops = &ll_max_rw_chunk_fops },
967 { .name = "stats_track_pid",
968 .fops = &ll_track_pid_fops },
969 { .name = "stats_track_ppid",
970 .fops = &ll_track_ppid_fops },
971 { .name = "stats_track_gid",
972 .fops = &ll_track_gid_fops },
973 { .name = "statahead_max",
974 .fops = &ll_statahead_max_fops },
975 { .name = "statahead_agl",
976 .fops = &ll_statahead_agl_fops },
977 { .name = "statahead_stats",
978 .fops = &ll_statahead_stats_fops },
979 { .name = "lazystatfs",
980 .fops = &ll_lazystatfs_fops },
981 { .name = "max_easize",
982 .fops = &ll_max_easize_fops },
983 { .name = "default_easize",
984 .fops = &ll_defult_easize_fops },
985 { .name = "max_cookiesize",
986 .fops = &ll_max_cookiesize_fops },
987 { .name = "default_cookiesize",
988 .fops = &ll_defult_cookiesize_fops },
989 { .name = "sbi_flags",
990 .fops = &ll_sbi_flags_fops },
991 { .name = "xattr_cache",
992 .fops = &ll_xattr_cache_fops },
993 { .name = "unstable_stats",
994 .fops = &ll_unstable_stats_fops },
995 { .name = "root_squash",
996 .fops = &ll_root_squash_fops },
997 { .name = "nosquash_nids",
998 .fops = &ll_nosquash_nids_fops },
1002 #define MAX_STRING_SIZE 128
1004 static const struct llite_file_opcode {
1008 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
1009 /* file operation */
1010 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
1011 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
1012 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1014 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1016 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1018 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1020 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1022 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1024 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
1025 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
1026 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
1027 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
1028 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
1029 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
1030 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
1031 /* inode operation */
1032 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
1033 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
1034 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
1035 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
1036 /* dir inode operation */
1037 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
1038 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
1039 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
1040 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
1041 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
1042 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
1043 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
1044 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
1045 /* special inode operation */
1046 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
1047 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
1048 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
1049 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
1050 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
1051 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
1052 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
1053 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
1056 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
1060 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
1061 lprocfs_counter_add(sbi->ll_stats, op, count);
1062 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
1063 sbi->ll_stats_track_id == current->pid)
1064 lprocfs_counter_add(sbi->ll_stats, op, count);
1065 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
1066 sbi->ll_stats_track_id == current->parent->pid)
1067 lprocfs_counter_add(sbi->ll_stats, op, count);
1068 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
1069 sbi->ll_stats_track_id ==
1070 from_kgid(&init_user_ns, current_gid()))
1071 lprocfs_counter_add(sbi->ll_stats, op, count);
1073 EXPORT_SYMBOL(ll_stats_ops_tally);
1075 static const char *ra_stat_string[] = {
1076 [RA_STAT_HIT] = "hits",
1077 [RA_STAT_MISS] = "misses",
1078 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
1079 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
1080 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
1081 [RA_STAT_FAILED_MATCH] = "failed lock match",
1082 [RA_STAT_DISCARDED] = "read but discarded",
1083 [RA_STAT_ZERO_LEN] = "zero length file",
1084 [RA_STAT_ZERO_WINDOW] = "zero size window",
1085 [RA_STAT_EOF] = "read-ahead to EOF",
1086 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
1087 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
1088 [RA_STAT_FAILED_REACH_END] = "failed to reach end"
1091 LPROC_SEQ_FOPS_RO_TYPE(llite, name);
1092 LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
1094 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
1095 struct super_block *sb, char *osc, char *mdc)
1097 struct lprocfs_seq_vars lvars[2];
1098 struct lustre_sb_info *lsi = s2lsi(sb);
1099 struct ll_sb_info *sbi = ll_s2sbi(sb);
1100 struct obd_device *obd;
1101 struct proc_dir_entry *dir;
1102 char name[MAX_STRING_SIZE + 1], *ptr;
1103 int err, id, len, rc;
1106 memset(lvars, 0, sizeof(lvars));
1108 name[MAX_STRING_SIZE] = '\0';
1109 lvars[0].name = name;
1111 LASSERT(sbi != NULL);
1112 LASSERT(mdc != NULL);
1113 LASSERT(osc != NULL);
1116 len = strlen(lsi->lsi_lmd->lmd_profile);
1117 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
1118 if (ptr && (strcmp(ptr, "-client") == 0))
1122 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
1123 lsi->lsi_lmd->lmd_profile, sb);
1125 sbi->ll_proc_root = lprocfs_seq_register(name, parent, NULL, NULL);
1126 if (IS_ERR(sbi->ll_proc_root)) {
1127 err = PTR_ERR(sbi->ll_proc_root);
1128 sbi->ll_proc_root = NULL;
1132 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
1133 &vvp_dump_pgcache_file_ops, sbi);
1135 CWARN("Error adding the dump_page_cache file\n");
1137 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
1138 &ll_rw_extents_stats_fops, sbi);
1140 CWARN("Error adding the extent_stats file\n");
1142 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
1143 0644, &ll_rw_extents_stats_pp_fops, sbi);
1145 CWARN("Error adding the extents_stats_per_process file\n");
1147 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
1148 &ll_rw_offset_stats_fops, sbi);
1150 CWARN("Error adding the offset_stats file\n");
1152 /* File operations stats */
1153 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1154 LPROCFS_STATS_FLAG_NONE);
1155 if (sbi->ll_stats == NULL)
1156 GOTO(out, err = -ENOMEM);
1157 /* do counter init */
1158 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1159 __u32 type = llite_opcode_table[id].type;
1161 if (type & LPROCFS_TYPE_REGS)
1163 else if (type & LPROCFS_TYPE_BYTES)
1165 else if (type & LPROCFS_TYPE_PAGES)
1167 lprocfs_counter_init(sbi->ll_stats,
1168 llite_opcode_table[id].opcode,
1169 (type & LPROCFS_CNTR_AVGMINMAX),
1170 llite_opcode_table[id].opname, ptr);
1172 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
1176 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1177 LPROCFS_STATS_FLAG_NONE);
1178 if (sbi->ll_ra_stats == NULL)
1179 GOTO(out, err = -ENOMEM);
1181 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1182 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1183 ra_stat_string[id], "pages");
1184 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
1190 err = lprocfs_seq_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1195 obd = class_name2obd(mdc);
1197 LASSERT(obd != NULL);
1198 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1199 LASSERT(obd->obd_type->typ_name != NULL);
1201 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1203 GOTO(out, err = -ENOMEM);
1205 snprintf(name, MAX_STRING_SIZE, "common_name");
1206 lvars[0].fops = &llite_name_fops;
1207 err = lprocfs_seq_add_vars(dir, lvars, obd);
1211 snprintf(name, MAX_STRING_SIZE, "uuid");
1212 lvars[0].fops = &llite_uuid_fops;
1213 err = lprocfs_seq_add_vars(dir, lvars, obd);
1218 obd = class_name2obd(osc);
1220 LASSERT(obd != NULL);
1221 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1222 LASSERT(obd->obd_type->typ_name != NULL);
1224 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1226 GOTO(out, err = -ENOMEM);
1228 snprintf(name, MAX_STRING_SIZE, "common_name");
1229 lvars[0].fops = &llite_name_fops;
1230 err = lprocfs_seq_add_vars(dir, lvars, obd);
1234 snprintf(name, MAX_STRING_SIZE, "uuid");
1235 lvars[0].fops = &llite_uuid_fops;
1236 err = lprocfs_seq_add_vars(dir, lvars, obd);
1239 lprocfs_remove(&sbi->ll_proc_root);
1240 lprocfs_free_stats(&sbi->ll_ra_stats);
1241 lprocfs_free_stats(&sbi->ll_stats);
1246 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1248 if (sbi->ll_proc_root) {
1249 lprocfs_remove(&sbi->ll_proc_root);
1250 lprocfs_free_stats(&sbi->ll_ra_stats);
1251 lprocfs_free_stats(&sbi->ll_stats);
1254 #undef MAX_STRING_SIZE
1256 #define pct(a,b) (b ? a * 100 / b : 0)
1258 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1259 struct seq_file *seq, int which)
1261 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1262 unsigned long start, end, r, w;
1263 char *unitp = "KMGTPEZY";
1265 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1271 for(i = 0; i < LL_HIST_MAX; i++) {
1272 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1273 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1276 for(i = 0; i < LL_HIST_MAX; i++) {
1277 r = pp_info->pp_r_hist.oh_buckets[i];
1278 w = pp_info->pp_w_hist.oh_buckets[i];
1281 end = 1 << (i + LL_HIST_START - units);
1282 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1283 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1284 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1285 r, pct(r, read_tot), pct(read_cum, read_tot),
1286 w, pct(w, write_tot), pct(write_cum, write_tot));
1288 if (start == 1<<10) {
1293 if (read_cum == read_tot && write_cum == write_tot)
1298 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1301 struct ll_sb_info *sbi = seq->private;
1302 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1305 do_gettimeofday(&now);
1307 if (!sbi->ll_rw_stats_on) {
1308 seq_printf(seq, "disabled\n"
1309 "write anything in this file to activate, "
1310 "then 0 or \"[D/d]isabled\" to deactivate\n");
1313 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1314 now.tv_sec, now.tv_usec);
1315 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1316 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1317 "extents", "calls", "%", "cum%",
1318 "calls", "%", "cum%");
1319 spin_lock(&sbi->ll_pp_extent_lock);
1320 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1321 if (io_extents->pp_extents[k].pid != 0) {
1322 seq_printf(seq, "\nPID: %d\n",
1323 io_extents->pp_extents[k].pid);
1324 ll_display_extents_info(io_extents, seq, k);
1327 spin_unlock(&sbi->ll_pp_extent_lock);
1331 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1332 const char __user *buf,
1336 struct seq_file *seq = file->private_data;
1337 struct ll_sb_info *sbi = seq->private;
1338 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1340 int value = 1, rc = 0;
1345 rc = lprocfs_write_helper(buf, len, &value);
1346 if (rc < 0 && len < 16) {
1349 if (copy_from_user(kernbuf, buf, len))
1353 if (kernbuf[len - 1] == '\n')
1354 kernbuf[len - 1] = 0;
1356 if (strcmp(kernbuf, "disabled") == 0 ||
1357 strcmp(kernbuf, "Disabled") == 0)
1362 sbi->ll_rw_stats_on = 0;
1364 sbi->ll_rw_stats_on = 1;
1366 spin_lock(&sbi->ll_pp_extent_lock);
1367 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1368 io_extents->pp_extents[i].pid = 0;
1369 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1370 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1372 spin_unlock(&sbi->ll_pp_extent_lock);
1376 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1378 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1381 struct ll_sb_info *sbi = seq->private;
1382 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1384 do_gettimeofday(&now);
1386 if (!sbi->ll_rw_stats_on) {
1387 seq_printf(seq, "disabled\n"
1388 "write anything in this file to activate, "
1389 "then 0 or \"[D/d]isabled\" to deactivate\n");
1392 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1393 now.tv_sec, now.tv_usec);
1395 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1396 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1397 "extents", "calls", "%", "cum%",
1398 "calls", "%", "cum%");
1399 spin_lock(&sbi->ll_lock);
1400 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1401 spin_unlock(&sbi->ll_lock);
1406 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1407 const char __user *buf,
1408 size_t len, loff_t *off)
1410 struct seq_file *seq = file->private_data;
1411 struct ll_sb_info *sbi = seq->private;
1412 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1414 int value = 1, rc = 0;
1419 rc = lprocfs_write_helper(buf, len, &value);
1420 if (rc < 0 && len < 16) {
1423 if (copy_from_user(kernbuf, buf, len))
1427 if (kernbuf[len - 1] == '\n')
1428 kernbuf[len - 1] = 0;
1430 if (strcmp(kernbuf, "disabled") == 0 ||
1431 strcmp(kernbuf, "Disabled") == 0)
1436 sbi->ll_rw_stats_on = 0;
1438 sbi->ll_rw_stats_on = 1;
1440 spin_lock(&sbi->ll_pp_extent_lock);
1441 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1442 io_extents->pp_extents[i].pid = 0;
1443 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1444 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1446 spin_unlock(&sbi->ll_pp_extent_lock);
1450 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1452 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1453 struct ll_file_data *file, loff_t pos,
1454 size_t count, int rw)
1457 struct ll_rw_process_info *process;
1458 struct ll_rw_process_info *offset;
1459 int *off_count = &sbi->ll_rw_offset_entry_count;
1460 int *process_count = &sbi->ll_offset_process_count;
1461 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1463 if(!sbi->ll_rw_stats_on)
1465 process = sbi->ll_rw_process_info;
1466 offset = sbi->ll_rw_offset_info;
1468 spin_lock(&sbi->ll_pp_extent_lock);
1469 /* Extent statistics */
1470 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1471 if(io_extents->pp_extents[i].pid == pid) {
1479 sbi->ll_extent_process_count =
1480 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1481 cur = sbi->ll_extent_process_count;
1482 io_extents->pp_extents[cur].pid = pid;
1483 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1484 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1487 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1488 (i < (LL_HIST_MAX - 1)); i++);
1490 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1491 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1493 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1494 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1496 spin_unlock(&sbi->ll_pp_extent_lock);
1498 spin_lock(&sbi->ll_process_lock);
1499 /* Offset statistics */
1500 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1501 if (process[i].rw_pid == pid) {
1502 if (process[i].rw_last_file != file) {
1503 process[i].rw_range_start = pos;
1504 process[i].rw_last_file_pos = pos + count;
1505 process[i].rw_smallest_extent = count;
1506 process[i].rw_largest_extent = count;
1507 process[i].rw_offset = 0;
1508 process[i].rw_last_file = file;
1509 spin_unlock(&sbi->ll_process_lock);
1512 if (process[i].rw_last_file_pos != pos) {
1514 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1515 offset[*off_count].rw_op = process[i].rw_op;
1516 offset[*off_count].rw_pid = pid;
1517 offset[*off_count].rw_range_start =
1518 process[i].rw_range_start;
1519 offset[*off_count].rw_range_end =
1520 process[i].rw_last_file_pos;
1521 offset[*off_count].rw_smallest_extent =
1522 process[i].rw_smallest_extent;
1523 offset[*off_count].rw_largest_extent =
1524 process[i].rw_largest_extent;
1525 offset[*off_count].rw_offset =
1526 process[i].rw_offset;
1527 process[i].rw_op = rw;
1528 process[i].rw_range_start = pos;
1529 process[i].rw_smallest_extent = count;
1530 process[i].rw_largest_extent = count;
1531 process[i].rw_offset = pos -
1532 process[i].rw_last_file_pos;
1534 if(process[i].rw_smallest_extent > count)
1535 process[i].rw_smallest_extent = count;
1536 if(process[i].rw_largest_extent < count)
1537 process[i].rw_largest_extent = count;
1538 process[i].rw_last_file_pos = pos + count;
1539 spin_unlock(&sbi->ll_process_lock);
1543 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1544 process[*process_count].rw_pid = pid;
1545 process[*process_count].rw_op = rw;
1546 process[*process_count].rw_range_start = pos;
1547 process[*process_count].rw_last_file_pos = pos + count;
1548 process[*process_count].rw_smallest_extent = count;
1549 process[*process_count].rw_largest_extent = count;
1550 process[*process_count].rw_offset = 0;
1551 process[*process_count].rw_last_file = file;
1552 spin_unlock(&sbi->ll_process_lock);
1555 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1558 struct ll_sb_info *sbi = seq->private;
1559 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1560 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1563 do_gettimeofday(&now);
1565 if (!sbi->ll_rw_stats_on) {
1566 seq_printf(seq, "disabled\n"
1567 "write anything in this file to activate, "
1568 "then 0 or \"[D/d]isabled\" to deactivate\n");
1571 spin_lock(&sbi->ll_process_lock);
1573 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1574 now.tv_sec, now.tv_usec);
1575 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1576 "R/W", "PID", "RANGE START", "RANGE END",
1577 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1579 /* We stored the discontiguous offsets here; print them first */
1580 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1581 if (offset[i].rw_pid != 0)
1583 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1584 offset[i].rw_op == READ ? 'R' : 'W',
1586 offset[i].rw_range_start,
1587 offset[i].rw_range_end,
1588 (unsigned long)offset[i].rw_smallest_extent,
1589 (unsigned long)offset[i].rw_largest_extent,
1590 offset[i].rw_offset);
1593 /* Then print the current offsets for each process */
1594 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1595 if (process[i].rw_pid != 0)
1597 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1598 process[i].rw_op == READ ? 'R' : 'W',
1600 process[i].rw_range_start,
1601 process[i].rw_last_file_pos,
1602 (unsigned long)process[i].rw_smallest_extent,
1603 (unsigned long)process[i].rw_largest_extent,
1604 process[i].rw_offset);
1606 spin_unlock(&sbi->ll_process_lock);
1611 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
1612 const char __user *buf,
1613 size_t len, loff_t *off)
1615 struct seq_file *seq = file->private_data;
1616 struct ll_sb_info *sbi = seq->private;
1617 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1618 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1619 int value = 1, rc = 0;
1624 rc = lprocfs_write_helper(buf, len, &value);
1626 if (rc < 0 && len < 16) {
1629 if (copy_from_user(kernbuf, buf, len))
1633 if (kernbuf[len - 1] == '\n')
1634 kernbuf[len - 1] = 0;
1636 if (strcmp(kernbuf, "disabled") == 0 ||
1637 strcmp(kernbuf, "Disabled") == 0)
1642 sbi->ll_rw_stats_on = 0;
1644 sbi->ll_rw_stats_on = 1;
1646 spin_lock(&sbi->ll_process_lock);
1647 sbi->ll_offset_process_count = 0;
1648 sbi->ll_rw_offset_entry_count = 0;
1649 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1650 LL_PROCESS_HIST_MAX);
1651 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1652 LL_OFFSET_HIST_MAX);
1653 spin_unlock(&sbi->ll_process_lock);
1658 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1659 #endif /* LPROCFS */