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, 2015, 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 <linux/user_namespace.h>
40 #ifdef HAVE_UIDGID_HEADER
41 # include <linux/uidgid.h>
43 #include <lustre_param.h>
44 #include <lprocfs_status.h>
45 #include <obd_support.h>
47 #include "llite_internal.h"
48 #include "vvp_internal.h"
50 struct proc_dir_entry *proc_lustre_fs_root;
53 /* /proc/lustre/llite mount point registration */
54 static const struct file_operations ll_rw_extents_stats_fops;
55 static const struct file_operations ll_rw_extents_stats_pp_fops;
56 static const struct file_operations ll_rw_offset_stats_fops;
58 static int ll_blksize_seq_show(struct seq_file *m, void *v)
60 struct super_block *sb = m->private;
61 struct obd_statfs osfs;
65 rc = ll_statfs_internal(sb, &osfs,
66 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
69 rc = seq_printf(m, "%u\n", osfs.os_bsize);
72 LPROC_SEQ_FOPS_RO(ll_blksize);
74 static int ll_kbytestotal_seq_show(struct seq_file *m, void *v)
76 struct super_block *sb = m->private;
77 struct obd_statfs osfs;
81 rc = ll_statfs_internal(sb, &osfs,
82 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
85 __u32 blk_size = osfs.os_bsize >> 10;
86 __u64 result = osfs.os_blocks;
88 while (blk_size >>= 1)
91 rc = seq_printf(m, LPU64"\n", result);
95 LPROC_SEQ_FOPS_RO(ll_kbytestotal);
97 static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
99 struct super_block *sb = m->private;
100 struct obd_statfs osfs;
104 rc = ll_statfs_internal(sb, &osfs,
105 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
108 __u32 blk_size = osfs.os_bsize >> 10;
109 __u64 result = osfs.os_bfree;
111 while (blk_size >>= 1)
114 rc = seq_printf(m, LPU64"\n", result);
118 LPROC_SEQ_FOPS_RO(ll_kbytesfree);
120 static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
122 struct super_block *sb = m->private;
123 struct obd_statfs osfs;
127 rc = ll_statfs_internal(sb, &osfs,
128 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
131 __u32 blk_size = osfs.os_bsize >> 10;
132 __u64 result = osfs.os_bavail;
134 while (blk_size >>= 1)
137 rc = seq_printf(m, LPU64"\n", result);
141 LPROC_SEQ_FOPS_RO(ll_kbytesavail);
143 static int ll_filestotal_seq_show(struct seq_file *m, void *v)
145 struct super_block *sb = m->private;
146 struct obd_statfs osfs;
150 rc = ll_statfs_internal(sb, &osfs,
151 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
154 rc = seq_printf(m, LPU64"\n", osfs.os_files);
157 LPROC_SEQ_FOPS_RO(ll_filestotal);
159 static int ll_filesfree_seq_show(struct seq_file *m, void *v)
161 struct super_block *sb = m->private;
162 struct obd_statfs osfs;
166 rc = ll_statfs_internal(sb, &osfs,
167 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
170 rc = seq_printf(m, LPU64"\n", osfs.os_ffree);
173 LPROC_SEQ_FOPS_RO(ll_filesfree);
175 static int ll_client_type_seq_show(struct seq_file *m, void *v)
177 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
180 LASSERT(sbi != NULL);
182 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
183 rc = seq_printf(m, "remote client\n");
185 rc = seq_printf(m, "local client\n");
188 LPROC_SEQ_FOPS_RO(ll_client_type);
190 static int ll_fstype_seq_show(struct seq_file *m, void *v)
192 struct super_block *sb = m->private;
195 return seq_printf(m, "%s\n", sb->s_type->name);
197 LPROC_SEQ_FOPS_RO(ll_fstype);
199 static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
201 struct super_block *sb = m->private;
204 return seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
206 LPROC_SEQ_FOPS_RO(ll_sb_uuid);
208 static int ll_xattr_cache_seq_show(struct seq_file *m, void *v)
210 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
212 return seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
215 static ssize_t ll_xattr_cache_seq_write(struct file *file,
216 const char __user *buffer,
217 size_t count, loff_t *off)
219 struct seq_file *m = file->private_data;
220 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
223 rc = lprocfs_write_helper(buffer, count, &val);
227 if (val != 0 && val != 1)
230 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
233 sbi->ll_xattr_cache_enabled = val;
237 LPROC_SEQ_FOPS(ll_xattr_cache);
239 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
241 struct super_block *sb = m->private;
244 * See description of statistical counters in struct cl_site, and
247 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
249 LPROC_SEQ_FOPS_RO(ll_site_stats);
251 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
253 struct super_block *sb = m->private;
254 struct ll_sb_info *sbi = ll_s2sbi(sb);
258 spin_lock(&sbi->ll_lock);
259 pages_number = sbi->ll_ra_info.ra_max_pages;
260 spin_unlock(&sbi->ll_lock);
262 mult = 1 << (20 - PAGE_CACHE_SHIFT);
263 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
267 ll_max_readahead_mb_seq_write(struct file *file, const char __user *buffer,
268 size_t count, loff_t *off)
270 struct seq_file *m = file->private_data;
271 struct super_block *sb = m->private;
272 struct ll_sb_info *sbi = ll_s2sbi(sb);
278 pages_shift = 20 - PAGE_CACHE_SHIFT;
279 rc = lprocfs_write_frac_u64_helper(buffer, count, &val,
286 pages_number = (long)val;
288 if (pages_number < 0 || pages_number > totalram_pages / 2) {
290 CERROR("%s: can't set max_readahead_mb=%lu > %luMB\n",
291 ll_get_fsname(sb, NULL, 0), pages_number >> pages_shift,
292 totalram_pages >> (pages_shift + 1));
296 spin_lock(&sbi->ll_lock);
297 sbi->ll_ra_info.ra_max_pages = pages_number;
298 spin_unlock(&sbi->ll_lock);
301 LPROC_SEQ_FOPS(ll_max_readahead_mb);
303 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
305 struct super_block *sb = m->private;
306 struct ll_sb_info *sbi = ll_s2sbi(sb);
310 spin_lock(&sbi->ll_lock);
311 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
312 spin_unlock(&sbi->ll_lock);
314 mult = 1 << (20 - PAGE_CACHE_SHIFT);
315 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
319 ll_max_readahead_per_file_mb_seq_write(struct file *file,
320 const char __user *buffer,
321 size_t count, loff_t *off)
323 struct seq_file *m = file->private_data;
324 struct super_block *sb = m->private;
325 struct ll_sb_info *sbi = ll_s2sbi(sb);
326 int pages_shift, rc, pages_number;
328 pages_shift = 20 - PAGE_CACHE_SHIFT;
329 rc = lprocfs_write_frac_helper(buffer, count, &pages_number,
334 if (pages_number < 0 || pages_number > sbi->ll_ra_info.ra_max_pages) {
335 CERROR("%s: can't set max_readahead_per_file_mb=%u > "
336 "max_read_ahead_mb=%lu\n", ll_get_fsname(sb, NULL, 0),
337 pages_number >> pages_shift,
338 sbi->ll_ra_info.ra_max_pages >> pages_shift);
342 spin_lock(&sbi->ll_lock);
343 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
344 spin_unlock(&sbi->ll_lock);
347 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
349 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *v)
351 struct super_block *sb = m->private;
352 struct ll_sb_info *sbi = ll_s2sbi(sb);
356 spin_lock(&sbi->ll_lock);
357 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
358 spin_unlock(&sbi->ll_lock);
360 mult = 1 << (20 - PAGE_CACHE_SHIFT);
361 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
365 ll_max_read_ahead_whole_mb_seq_write(struct file *file,
366 const char __user *buffer,
367 size_t count, loff_t *off)
369 struct seq_file *m = file->private_data;
370 struct super_block *sb = m->private;
371 struct ll_sb_info *sbi = ll_s2sbi(sb);
372 int pages_shift, rc, pages_number;
374 pages_shift = 20 - PAGE_CACHE_SHIFT;
375 rc = lprocfs_write_frac_helper(buffer, count, &pages_number,
380 /* Cap this at the current max readahead window size, the readahead
381 * algorithm does this anyway so it's pointless to set it larger. */
382 if (pages_number < 0 ||
383 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
384 CERROR("%s: can't set max_read_ahead_whole_mb=%u > "
385 "max_read_ahead_per_file_mb=%lu\n",
386 ll_get_fsname(sb, NULL, 0),
387 pages_number >> pages_shift,
388 sbi->ll_ra_info.ra_max_pages_per_file >> pages_shift);
392 spin_lock(&sbi->ll_lock);
393 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
394 spin_unlock(&sbi->ll_lock);
397 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
399 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
401 struct super_block *sb = m->private;
402 struct ll_sb_info *sbi = ll_s2sbi(sb);
403 struct cl_client_cache *cache = sbi->ll_cache;
404 int shift = 20 - PAGE_CACHE_SHIFT;
408 max_cached_mb = cache->ccc_lru_max >> shift;
409 unused_mb = atomic_long_read(&cache->ccc_lru_left) >> shift;
412 "max_cached_mb: %ld\n"
415 "reclaim_count: %u\n",
416 atomic_read(&cache->ccc_users),
418 max_cached_mb - unused_mb,
420 cache->ccc_lru_shrinkers);
424 ll_max_cached_mb_seq_write(struct file *file, const char __user *buffer,
425 size_t count, loff_t *off)
427 struct seq_file *m = file->private_data;
428 struct super_block *sb = m->private;
429 struct ll_sb_info *sbi = ll_s2sbi(sb);
430 struct cl_client_cache *cache = sbi->ll_cache;
442 if (count >= sizeof(kernbuf))
445 if (copy_from_user(kernbuf, buffer, count))
449 mult = 1 << (20 - PAGE_CACHE_SHIFT);
450 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
452 rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult);
458 pages_number = (long)val;
460 if (pages_number < 0 || pages_number > totalram_pages) {
461 CERROR("%s: can't set max cache more than %lu MB\n",
462 ll_get_fsname(sb, NULL, 0),
463 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
466 /* Allow enough cache so clients can make well-formed RPCs */
467 pages_number = max_t(long, pages_number, PTLRPC_MAX_BRW_PAGES);
469 spin_lock(&sbi->ll_lock);
470 diff = pages_number - cache->ccc_lru_max;
471 spin_unlock(&sbi->ll_lock);
473 /* easy - add more LRU slots. */
475 atomic_long_add(diff, &cache->ccc_lru_left);
479 env = cl_env_get(&refcheck);
487 /* reduce LRU budget from free slots. */
491 ov = atomic_long_read(&cache->ccc_lru_left);
495 nv = ov > diff ? ov - diff : 0;
496 rc = atomic_long_cmpxchg(&cache->ccc_lru_left, ov, nv);
497 if (likely(ov == rc)) {
507 if (sbi->ll_dt_exp == NULL) { /* being initialized */
512 /* difficult - have to ask OSCs to drop LRU slots. */
514 rc = obd_set_info_async(env, sbi->ll_dt_exp,
515 sizeof(KEY_CACHE_LRU_SHRINK),
516 KEY_CACHE_LRU_SHRINK,
517 sizeof(tmp), &tmp, NULL);
521 cl_env_put(env, &refcheck);
525 spin_lock(&sbi->ll_lock);
526 cache->ccc_lru_max = pages_number;
527 spin_unlock(&sbi->ll_lock);
530 atomic_long_add(nrpages, &cache->ccc_lru_left);
534 LPROC_SEQ_FOPS(ll_max_cached_mb);
536 static int ll_checksum_seq_show(struct seq_file *m, void *v)
538 struct super_block *sb = m->private;
539 struct ll_sb_info *sbi = ll_s2sbi(sb);
541 return seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
544 static ssize_t ll_checksum_seq_write(struct file *file,
545 const char __user *buffer,
546 size_t count, loff_t *off)
548 struct seq_file *m = file->private_data;
549 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
556 rc = lprocfs_write_helper(buffer, count, &val);
560 sbi->ll_flags |= LL_SBI_CHECKSUM;
562 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
564 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
565 KEY_CHECKSUM, sizeof(val), &val, NULL);
567 CWARN("Failed to set OSC checksum flags: %d\n", rc);
571 LPROC_SEQ_FOPS(ll_checksum);
573 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
575 struct super_block *sb = m->private;
577 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
578 return seq_printf(m, "%d\n",
579 ll_s2sbi(sb)->ll_stats_track_id);
580 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
581 return seq_printf(m, "0 (all)\n");
583 return seq_printf(m, "untracked\n");
587 static int ll_wr_track_id(const char __user *buffer, unsigned long count,
588 void *data, enum stats_track_type type)
590 struct super_block *sb = data;
593 rc = lprocfs_write_helper(buffer, count, &pid);
596 ll_s2sbi(sb)->ll_stats_track_id = pid;
598 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
600 ll_s2sbi(sb)->ll_stats_track_type = type;
601 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
605 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
607 return ll_rd_track_id(m, STATS_TRACK_PID);
610 static ssize_t ll_track_pid_seq_write(struct file *file,
611 const char __user *buffer,
612 size_t count, loff_t *off)
614 struct seq_file *seq = file->private_data;
615 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
617 LPROC_SEQ_FOPS(ll_track_pid);
619 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
621 return ll_rd_track_id(m, STATS_TRACK_PPID);
624 static ssize_t ll_track_ppid_seq_write(struct file *file,
625 const char __user *buffer,
626 size_t count, loff_t *off)
628 struct seq_file *seq = file->private_data;
629 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
631 LPROC_SEQ_FOPS(ll_track_ppid);
633 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
635 return ll_rd_track_id(m, STATS_TRACK_GID);
638 static ssize_t ll_track_gid_seq_write(struct file *file,
639 const char __user *buffer,
640 size_t count, loff_t *off)
642 struct seq_file *seq = file->private_data;
643 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
645 LPROC_SEQ_FOPS(ll_track_gid);
647 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
649 struct super_block *sb = m->private;
650 struct ll_sb_info *sbi = ll_s2sbi(sb);
652 return seq_printf(m, "%u\n", sbi->ll_sa_max);
655 static ssize_t ll_statahead_max_seq_write(struct file *file,
656 const char __user *buffer,
657 size_t count, loff_t *off)
659 struct seq_file *m = file->private_data;
660 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
663 rc = lprocfs_write_helper(buffer, count, &val);
667 if (val >= 0 && val <= LL_SA_RPC_MAX)
668 sbi->ll_sa_max = val;
670 CERROR("Bad statahead_max value %d. Valid values are in the "
671 "range [0, %d]\n", val, LL_SA_RPC_MAX);
675 LPROC_SEQ_FOPS(ll_statahead_max);
677 static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
679 struct super_block *sb = m->private;
680 struct ll_sb_info *sbi = ll_s2sbi(sb);
682 return seq_printf(m, "%u\n",
683 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
686 static ssize_t ll_statahead_agl_seq_write(struct file *file,
687 const char __user *buffer,
688 size_t count, loff_t *off)
690 struct seq_file *m = file->private_data;
691 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
694 rc = lprocfs_write_helper(buffer, count, &val);
699 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
701 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
705 LPROC_SEQ_FOPS(ll_statahead_agl);
707 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
709 struct super_block *sb = m->private;
710 struct ll_sb_info *sbi = ll_s2sbi(sb);
713 "statahead total: %u\n"
714 "statahead wrong: %u\n"
716 atomic_read(&sbi->ll_sa_total),
717 atomic_read(&sbi->ll_sa_wrong),
718 atomic_read(&sbi->ll_agl_total));
720 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
722 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
724 struct super_block *sb = m->private;
725 struct ll_sb_info *sbi = ll_s2sbi(sb);
727 return seq_printf(m, "%u\n",
728 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
731 static ssize_t ll_lazystatfs_seq_write(struct file *file,
732 const char __user *buffer,
733 size_t count, loff_t *off)
735 struct seq_file *m = file->private_data;
736 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
739 rc = lprocfs_write_helper(buffer, count, &val);
744 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
746 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
750 LPROC_SEQ_FOPS(ll_lazystatfs);
752 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
754 struct super_block *sb = m->private;
755 struct ll_sb_info *sbi = ll_s2sbi(sb);
759 rc = ll_get_max_mdsize(sbi, &ealen);
763 return seq_printf(m, "%u\n", ealen);
765 LPROC_SEQ_FOPS_RO(ll_max_easize);
768 * Get default_easize.
770 * \see client_obd::cl_default_mds_easize
772 * \param[in] m seq_file handle
773 * \param[in] v unused for single entry
775 * \retval 0 on success
776 * \retval negative negated errno on failure
778 static int ll_default_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);
793 * Set default_easize.
795 * Range checking on the passed value is handled by
796 * ll_set_default_mdsize().
798 * \see client_obd::cl_default_mds_easize
800 * \param[in] file proc file
801 * \param[in] buffer string passed from user space
802 * \param[in] count \a buffer length
803 * \param[in] off unused for single entry
805 * \retval positive \a count on success
806 * \retval negative negated errno on failure
808 static ssize_t ll_default_easize_seq_write(struct file *file,
809 const char __user *buffer,
810 size_t count, loff_t *unused)
812 struct seq_file *seq = file->private_data;
813 struct super_block *sb = (struct super_block *)seq->private;
814 struct ll_sb_info *sbi = ll_s2sbi(sb);
821 rc = lprocfs_write_helper(buffer, count, &val);
825 rc = ll_set_default_mdsize(sbi, val);
831 LPROC_SEQ_FOPS(ll_default_easize);
833 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
835 const char *str[] = LL_SBI_FLAGS;
836 struct super_block *sb = m->private;
837 int flags = ll_s2sbi(sb)->ll_flags;
841 if (ARRAY_SIZE(str) <= i) {
842 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
843 "flags please.\n", ll_get_fsname(sb, NULL, 0));
848 seq_printf(m, "%s ", str[i]);
852 seq_printf(m, "\b\n");
855 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
857 static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
859 struct super_block *sb = m->private;
860 struct ll_sb_info *sbi = ll_s2sbi(sb);
861 struct cl_client_cache *cache = sbi->ll_cache;
865 pages = atomic_long_read(&cache->ccc_unstable_nr);
866 mb = (pages * PAGE_CACHE_SIZE) >> 20;
868 return seq_printf(m, "unstable_check: %8d\n"
869 "unstable_pages: %12ld\n"
870 "unstable_mb: %8d\n",
871 cache->ccc_unstable_check, pages, mb);
874 static ssize_t ll_unstable_stats_seq_write(struct file *file,
875 const char __user *buffer,
876 size_t count, loff_t *unused)
878 struct seq_file *seq = file->private_data;
879 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private);
885 if (count >= sizeof(kernbuf))
888 if (copy_from_user(kernbuf, buffer, count))
892 buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) -
894 rc = lprocfs_write_helper(buffer, count, &val);
898 /* borrow lru lock to set the value */
899 spin_lock(&sbi->ll_cache->ccc_lru_lock);
900 sbi->ll_cache->ccc_unstable_check = !!val;
901 spin_unlock(&sbi->ll_cache->ccc_lru_lock);
905 LPROC_SEQ_FOPS(ll_unstable_stats);
907 static int ll_root_squash_seq_show(struct seq_file *m, void *v)
909 struct super_block *sb = m->private;
910 struct ll_sb_info *sbi = ll_s2sbi(sb);
911 struct root_squash_info *squash = &sbi->ll_squash;
913 return seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid);
916 static ssize_t ll_root_squash_seq_write(struct file *file,
917 const char __user *buffer,
918 size_t count, loff_t *off)
920 struct seq_file *m = file->private_data;
921 struct super_block *sb = m->private;
922 struct ll_sb_info *sbi = ll_s2sbi(sb);
923 struct root_squash_info *squash = &sbi->ll_squash;
925 return lprocfs_wr_root_squash(buffer, count, squash,
926 ll_get_fsname(sb, NULL, 0));
928 LPROC_SEQ_FOPS(ll_root_squash);
930 static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v)
932 struct super_block *sb = m->private;
933 struct ll_sb_info *sbi = ll_s2sbi(sb);
934 struct root_squash_info *squash = &sbi->ll_squash;
937 down_read(&squash->rsi_sem);
938 if (!list_empty(&squash->rsi_nosquash_nids)) {
939 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
940 &squash->rsi_nosquash_nids);
942 rc = seq_printf(m, "\n");
944 rc = seq_printf(m, "NONE\n");
946 up_read(&squash->rsi_sem);
951 static ssize_t ll_nosquash_nids_seq_write(struct file *file,
952 const char __user *buffer,
953 size_t count, loff_t *off)
955 struct seq_file *m = file->private_data;
956 struct super_block *sb = m->private;
957 struct ll_sb_info *sbi = ll_s2sbi(sb);
958 struct root_squash_info *squash = &sbi->ll_squash;
961 rc = lprocfs_wr_nosquash_nids(buffer, count, squash,
962 ll_get_fsname(sb, NULL, 0));
966 ll_compute_rootsquash_state(sbi);
970 LPROC_SEQ_FOPS(ll_nosquash_nids);
972 struct lprocfs_vars lprocfs_llite_obd_vars[] = {
974 .fops = &ll_sb_uuid_fops },
976 .fops = &ll_fstype_fops },
978 .fops = &ll_site_stats_fops },
979 { .name = "blocksize",
980 .fops = &ll_blksize_fops },
981 { .name = "kbytestotal",
982 .fops = &ll_kbytestotal_fops },
983 { .name = "kbytesfree",
984 .fops = &ll_kbytesfree_fops },
985 { .name = "kbytesavail",
986 .fops = &ll_kbytesavail_fops },
987 { .name = "filestotal",
988 .fops = &ll_filestotal_fops },
989 { .name = "filesfree",
990 .fops = &ll_filesfree_fops },
991 { .name = "client_type",
992 .fops = &ll_client_type_fops },
993 { .name = "max_read_ahead_mb",
994 .fops = &ll_max_readahead_mb_fops },
995 { .name = "max_read_ahead_per_file_mb",
996 .fops = &ll_max_readahead_per_file_mb_fops },
997 { .name = "max_read_ahead_whole_mb",
998 .fops = &ll_max_read_ahead_whole_mb_fops },
999 { .name = "max_cached_mb",
1000 .fops = &ll_max_cached_mb_fops },
1001 { .name = "checksum_pages",
1002 .fops = &ll_checksum_fops },
1003 { .name = "stats_track_pid",
1004 .fops = &ll_track_pid_fops },
1005 { .name = "stats_track_ppid",
1006 .fops = &ll_track_ppid_fops },
1007 { .name = "stats_track_gid",
1008 .fops = &ll_track_gid_fops },
1009 { .name = "statahead_max",
1010 .fops = &ll_statahead_max_fops },
1011 { .name = "statahead_agl",
1012 .fops = &ll_statahead_agl_fops },
1013 { .name = "statahead_stats",
1014 .fops = &ll_statahead_stats_fops },
1015 { .name = "lazystatfs",
1016 .fops = &ll_lazystatfs_fops },
1017 { .name = "max_easize",
1018 .fops = &ll_max_easize_fops },
1019 { .name = "default_easize",
1020 .fops = &ll_default_easize_fops },
1021 { .name = "sbi_flags",
1022 .fops = &ll_sbi_flags_fops },
1023 { .name = "xattr_cache",
1024 .fops = &ll_xattr_cache_fops },
1025 { .name = "unstable_stats",
1026 .fops = &ll_unstable_stats_fops },
1027 { .name = "root_squash",
1028 .fops = &ll_root_squash_fops },
1029 { .name = "nosquash_nids",
1030 .fops = &ll_nosquash_nids_fops },
1034 #define MAX_STRING_SIZE 128
1036 static const struct llite_file_opcode {
1040 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
1041 /* file operation */
1042 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
1043 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
1044 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1046 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
1048 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
1050 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
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_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_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_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_add_vars(dir, lvars, obd);
1239 snprintf(name, MAX_STRING_SIZE, "uuid");
1240 lvars[0].fops = &llite_uuid_fops;
1241 err = lprocfs_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_add_vars(dir, lvars, obd);
1262 snprintf(name, MAX_STRING_SIZE, "uuid");
1263 lvars[0].fops = &llite_uuid_fops;
1264 err = lprocfs_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 /* CONFIG_PROC_FS */