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_lite.h>
40 #include <lprocfs_status.h>
41 #include <linux/seq_file.h>
42 #include <obd_support.h>
44 #include "llite_internal.h"
46 struct proc_dir_entry *proc_lustre_fs_root;
49 /* /proc/lustre/llite mount point registration */
50 extern struct file_operations vvp_dump_pgcache_file_ops;
51 struct file_operations ll_rw_extents_stats_fops;
52 struct file_operations ll_rw_extents_stats_pp_fops;
53 struct file_operations ll_rw_offset_stats_fops;
55 static int ll_rd_blksize(char *page, char **start, off_t off, int count,
58 struct super_block *sb = (struct super_block *)data;
59 struct obd_statfs osfs;
63 rc = ll_statfs_internal(sb, &osfs,
64 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
68 rc = snprintf(page, count, "%u\n", osfs.os_bsize);
74 static int ll_rd_kbytestotal(char *page, char **start, off_t off, int count,
77 struct super_block *sb = (struct super_block *)data;
78 struct obd_statfs osfs;
82 rc = ll_statfs_internal(sb, &osfs,
83 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
86 __u32 blk_size = osfs.os_bsize >> 10;
87 __u64 result = osfs.os_blocks;
89 while (blk_size >>= 1)
93 rc = snprintf(page, count, LPU64"\n", result);
99 static int ll_rd_kbytesfree(char *page, char **start, off_t off, int count,
100 int *eof, void *data)
102 struct super_block *sb = (struct super_block *)data;
103 struct obd_statfs osfs;
107 rc = ll_statfs_internal(sb, &osfs,
108 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
111 __u32 blk_size = osfs.os_bsize >> 10;
112 __u64 result = osfs.os_bfree;
114 while (blk_size >>= 1)
118 rc = snprintf(page, count, LPU64"\n", result);
123 static int ll_rd_kbytesavail(char *page, char **start, off_t off, int count,
124 int *eof, void *data)
126 struct super_block *sb = (struct super_block *)data;
127 struct obd_statfs osfs;
131 rc = ll_statfs_internal(sb, &osfs,
132 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
135 __u32 blk_size = osfs.os_bsize >> 10;
136 __u64 result = osfs.os_bavail;
138 while (blk_size >>= 1)
142 rc = snprintf(page, count, LPU64"\n", result);
147 static int ll_rd_filestotal(char *page, char **start, off_t off, int count,
148 int *eof, void *data)
150 struct super_block *sb = (struct super_block *)data;
151 struct obd_statfs osfs;
155 rc = ll_statfs_internal(sb, &osfs,
156 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
160 rc = snprintf(page, count, LPU64"\n", osfs.os_files);
165 static int ll_rd_filesfree(char *page, char **start, off_t off, int count,
166 int *eof, void *data)
168 struct super_block *sb = (struct super_block *)data;
169 struct obd_statfs osfs;
173 rc = ll_statfs_internal(sb, &osfs,
174 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
178 rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
184 static int ll_rd_client_type(char *page, char **start, off_t off, int count,
185 int *eof, void *data)
187 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)data);
190 LASSERT(sbi != NULL);
193 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
194 rc = snprintf(page, count, "remote client\n");
196 rc = snprintf(page, count, "local client\n");
201 static int ll_rd_fstype(char *page, char **start, off_t off, int count,
202 int *eof, void *data)
204 struct super_block *sb = (struct super_block*)data;
208 return snprintf(page, count, "%s\n", sb->s_type->name);
211 static int ll_rd_sb_uuid(char *page, char **start, off_t off, int count,
212 int *eof, void *data)
214 struct super_block *sb = (struct super_block *)data;
218 return snprintf(page, count, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
221 static int ll_rd_xattr_cache(char *page, char **start, off_t off,
222 int count, int *eof, void *data)
224 struct super_block *sb = (struct super_block *)data;
225 struct ll_sb_info *sbi = ll_s2sbi(sb);
228 rc = snprintf(page, count, "%u\n", sbi->ll_xattr_cache_enabled);
233 static int ll_wr_xattr_cache(struct file *file, const char *buffer,
234 unsigned long count, void *data)
236 struct super_block *sb = (struct super_block *)data;
237 struct ll_sb_info *sbi = ll_s2sbi(sb);
240 rc = lprocfs_write_helper(buffer, count, &val);
244 if (val != 0 && val != 1)
247 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
250 sbi->ll_xattr_cache_enabled = val;
255 static int ll_rd_site_stats(char *page, char **start, off_t off,
256 int count, int *eof, void *data)
258 struct super_block *sb = data;
261 * See description of statistical counters in struct cl_site, and
264 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site),
268 static int ll_rd_max_readahead_mb(char *page, char **start, off_t off,
269 int count, int *eof, void *data)
271 struct super_block *sb = data;
272 struct ll_sb_info *sbi = ll_s2sbi(sb);
276 spin_lock(&sbi->ll_lock);
277 pages_number = sbi->ll_ra_info.ra_max_pages;
278 spin_unlock(&sbi->ll_lock);
280 mult = 1 << (20 - PAGE_CACHE_SHIFT);
281 return lprocfs_read_frac_helper(page, count, pages_number, mult);
284 static int ll_wr_max_readahead_mb(struct file *file, const char *buffer,
285 unsigned long count, void *data)
287 struct super_block *sb = data;
288 struct ll_sb_info *sbi = ll_s2sbi(sb);
289 int mult, rc, pages_number;
291 mult = 1 << (20 - PAGE_CACHE_SHIFT);
292 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
296 if (pages_number < 0 || pages_number > totalram_pages / 2) {
298 CERROR("can't set file readahead more than %lu MB\n",
299 totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1));
303 spin_lock(&sbi->ll_lock);
304 sbi->ll_ra_info.ra_max_pages = pages_number;
305 spin_unlock(&sbi->ll_lock);
310 static int ll_rd_max_readahead_per_file_mb(char *page, char **start, off_t off,
311 int count, int *eof, void *data)
313 struct super_block *sb = data;
314 struct ll_sb_info *sbi = ll_s2sbi(sb);
318 spin_lock(&sbi->ll_lock);
319 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
320 spin_unlock(&sbi->ll_lock);
322 mult = 1 << (20 - PAGE_CACHE_SHIFT);
323 return lprocfs_read_frac_helper(page, count, pages_number, mult);
326 static int ll_wr_max_readahead_per_file_mb(struct file *file, const char *buffer,
327 unsigned long count, void *data)
329 struct super_block *sb = data;
330 struct ll_sb_info *sbi = ll_s2sbi(sb);
331 int mult, rc, pages_number;
333 mult = 1 << (20 - PAGE_CACHE_SHIFT);
334 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
338 if (pages_number < 0 ||
339 pages_number > sbi->ll_ra_info.ra_max_pages) {
340 CERROR("can't set file readahead more than"
341 "max_read_ahead_mb %lu MB\n",
342 sbi->ll_ra_info.ra_max_pages);
346 spin_lock(&sbi->ll_lock);
347 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
348 spin_unlock(&sbi->ll_lock);
353 static int ll_rd_max_read_ahead_whole_mb(char *page, char **start, off_t off,
354 int count, int *eof, void *data)
356 struct super_block *sb = data;
357 struct ll_sb_info *sbi = ll_s2sbi(sb);
361 spin_lock(&sbi->ll_lock);
362 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
363 spin_unlock(&sbi->ll_lock);
365 mult = 1 << (20 - PAGE_CACHE_SHIFT);
366 return lprocfs_read_frac_helper(page, count, pages_number, mult);
369 static int ll_wr_max_read_ahead_whole_mb(struct file *file, const char *buffer,
370 unsigned long count, void *data)
372 struct super_block *sb = data;
373 struct ll_sb_info *sbi = ll_s2sbi(sb);
374 int mult, rc, pages_number;
376 mult = 1 << (20 - PAGE_CACHE_SHIFT);
377 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
381 /* Cap this at the current max readahead window size, the readahead
382 * algorithm does this anyway so it's pointless to set it larger. */
383 if (pages_number < 0 ||
384 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
385 CERROR("can't set max_read_ahead_whole_mb more than "
386 "max_read_ahead_per_file_mb: %lu\n",
387 sbi->ll_ra_info.ra_max_pages_per_file >>
388 (20 - PAGE_CACHE_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);
399 static int ll_rd_max_cached_mb(char *page, char **start, off_t off,
400 int count, int *eof, void *data)
402 struct super_block *sb = data;
403 struct ll_sb_info *sbi = ll_s2sbi(sb);
404 struct cl_client_cache *cache = &sbi->ll_cache;
405 int shift = 20 - PAGE_CACHE_SHIFT;
410 max_cached_mb = cache->ccc_lru_max >> shift;
411 unused_mb = cfs_atomic_read(&cache->ccc_lru_left) >> shift;
412 return snprintf(page, count,
414 "max_cached_mb: %d\n"
417 "reclaim_count: %u\n",
418 cfs_atomic_read(&cache->ccc_users),
420 max_cached_mb - unused_mb,
422 cache->ccc_lru_shrinkers);
425 static int ll_wr_max_cached_mb(struct file *file, const char *buffer,
426 unsigned long count, void *data)
428 struct super_block *sb = data;
429 struct ll_sb_info *sbi = ll_s2sbi(sb);
430 struct cl_client_cache *cache = &sbi->ll_cache;
431 int mult, rc, pages_number;
436 mult = 1 << (20 - PAGE_CACHE_SHIFT);
437 buffer = lprocfs_find_named_value(buffer, "max_cached_mb:", &count);
438 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
442 if (pages_number < 0 || pages_number > totalram_pages) {
443 CERROR("%s: can't set max cache more than %lu MB\n",
444 ll_get_fsname(sb, NULL, 0),
445 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
449 if (sbi->ll_dt_exp == NULL) /* being initialized */
452 spin_lock(&sbi->ll_lock);
453 diff = pages_number - cache->ccc_lru_max;
454 spin_unlock(&sbi->ll_lock);
456 /* easy - add more LRU slots. */
458 cfs_atomic_add(diff, &cache->ccc_lru_left);
466 /* reduce LRU budget from free slots. */
470 ov = cfs_atomic_read(&cache->ccc_lru_left);
474 nv = ov > diff ? ov - diff : 0;
475 rc = cfs_atomic_cmpxchg(&cache->ccc_lru_left, ov, nv);
476 if (likely(ov == rc)) {
486 /* difficult - have to ask OSCs to drop LRU slots. */
488 rc = obd_set_info_async(NULL, sbi->ll_dt_exp,
489 sizeof(KEY_CACHE_LRU_SHRINK),
490 KEY_CACHE_LRU_SHRINK,
491 sizeof(tmp), &tmp, NULL);
498 spin_lock(&sbi->ll_lock);
499 cache->ccc_lru_max = pages_number;
500 spin_unlock(&sbi->ll_lock);
503 cfs_atomic_add(nrpages, &cache->ccc_lru_left);
508 static int ll_rd_checksum(char *page, char **start, off_t off,
509 int count, int *eof, void *data)
511 struct super_block *sb = data;
512 struct ll_sb_info *sbi = ll_s2sbi(sb);
514 return snprintf(page, count, "%u\n",
515 (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
518 static int ll_wr_checksum(struct file *file, const char *buffer,
519 unsigned long count, void *data)
521 struct super_block *sb = data;
522 struct ll_sb_info *sbi = ll_s2sbi(sb);
529 rc = lprocfs_write_helper(buffer, count, &val);
533 sbi->ll_flags |= LL_SBI_CHECKSUM;
535 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
537 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
538 KEY_CHECKSUM, sizeof(val), &val, NULL);
540 CWARN("Failed to set OSC checksum flags: %d\n", rc);
545 static int ll_rd_max_rw_chunk(char *page, char **start, off_t off,
546 int count, int *eof, void *data)
548 struct super_block *sb = data;
550 return snprintf(page, count, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
553 static int ll_wr_max_rw_chunk(struct file *file, const char *buffer,
554 unsigned long count, void *data)
556 struct super_block *sb = data;
559 rc = lprocfs_write_helper(buffer, count, &val);
562 ll_s2sbi(sb)->ll_max_rw_chunk = val;
566 static int ll_rd_track_id(char *page, int count, void *data,
567 enum stats_track_type type)
569 struct super_block *sb = data;
571 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
572 return snprintf(page, count, "%d\n",
573 ll_s2sbi(sb)->ll_stats_track_id);
575 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
576 return snprintf(page, count, "0 (all)\n");
578 return snprintf(page, count, "untracked\n");
582 static int ll_wr_track_id(const char *buffer, unsigned long count, void *data,
583 enum stats_track_type type)
585 struct super_block *sb = data;
588 rc = lprocfs_write_helper(buffer, count, &pid);
591 ll_s2sbi(sb)->ll_stats_track_id = pid;
593 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
595 ll_s2sbi(sb)->ll_stats_track_type = type;
596 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
600 static int ll_rd_track_pid(char *page, char **start, off_t off,
601 int count, int *eof, void *data)
603 return (ll_rd_track_id(page, count, data, STATS_TRACK_PID));
606 static int ll_wr_track_pid(struct file *file, const char *buffer,
607 unsigned long count, void *data)
609 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PID));
612 static int ll_rd_track_ppid(char *page, char **start, off_t off,
613 int count, int *eof, void *data)
615 return (ll_rd_track_id(page, count, data, STATS_TRACK_PPID));
618 static int ll_wr_track_ppid(struct file *file, const char *buffer,
619 unsigned long count, void *data)
621 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PPID));
624 static int ll_rd_track_gid(char *page, char **start, off_t off,
625 int count, int *eof, void *data)
627 return (ll_rd_track_id(page, count, data, STATS_TRACK_GID));
630 static int ll_wr_track_gid(struct file *file, const char *buffer,
631 unsigned long count, void *data)
633 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_GID));
636 static int ll_rd_statahead_max(char *page, char **start, off_t off,
637 int count, int *eof, void *data)
639 struct super_block *sb = data;
640 struct ll_sb_info *sbi = ll_s2sbi(sb);
642 return snprintf(page, count, "%u\n", sbi->ll_sa_max);
645 static int ll_wr_statahead_max(struct file *file, const char *buffer,
646 unsigned long count, void *data)
648 struct super_block *sb = data;
649 struct ll_sb_info *sbi = ll_s2sbi(sb);
652 rc = lprocfs_write_helper(buffer, count, &val);
656 if (val >= 0 && val <= LL_SA_RPC_MAX)
657 sbi->ll_sa_max = val;
659 CERROR("Bad statahead_max value %d. Valid values are in the "
660 "range [0, %d]\n", val, LL_SA_RPC_MAX);
665 static int ll_rd_statahead_agl(char *page, char **start, off_t off,
666 int count, int *eof, void *data)
668 struct super_block *sb = data;
669 struct ll_sb_info *sbi = ll_s2sbi(sb);
671 return snprintf(page, count, "%u\n",
672 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
675 static int ll_wr_statahead_agl(struct file *file, const char *buffer,
676 unsigned long count, void *data)
678 struct super_block *sb = data;
679 struct ll_sb_info *sbi = ll_s2sbi(sb);
682 rc = lprocfs_write_helper(buffer, count, &val);
687 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
689 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
694 static int ll_rd_statahead_stats(char *page, char **start, off_t off,
695 int count, int *eof, void *data)
697 struct super_block *sb = data;
698 struct ll_sb_info *sbi = ll_s2sbi(sb);
700 return snprintf(page, count,
701 "statahead total: %u\n"
702 "statahead wrong: %u\n"
704 atomic_read(&sbi->ll_sa_total),
705 atomic_read(&sbi->ll_sa_wrong),
706 atomic_read(&sbi->ll_agl_total));
709 static int ll_rd_lazystatfs(char *page, char **start, off_t off,
710 int count, int *eof, void *data)
712 struct super_block *sb = data;
713 struct ll_sb_info *sbi = ll_s2sbi(sb);
715 return snprintf(page, count, "%u\n",
716 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
719 static int ll_wr_lazystatfs(struct file *file, const char *buffer,
720 unsigned long count, void *data)
722 struct super_block *sb = data;
723 struct ll_sb_info *sbi = ll_s2sbi(sb);
726 rc = lprocfs_write_helper(buffer, count, &val);
731 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
733 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
738 static int ll_rd_maxea_size(char *page, char **start, off_t off,
739 int count, int *eof, void *data)
741 struct super_block *sb = data;
742 struct ll_sb_info *sbi = ll_s2sbi(sb);
746 rc = ll_get_max_mdsize(sbi, &ealen);
750 return snprintf(page, count, "%u\n", ealen);
753 static int ll_rd_sbi_flags(char *page, char **start, off_t off,
754 int count, int *eof, void *data)
756 const char *str[] = LL_SBI_FLAGS;
757 struct super_block *sb = data;
758 int flags = ll_s2sbi(sb)->ll_flags;
763 if (ARRAY_SIZE(str) <= i) {
764 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
765 "flags please.\n", ll_get_fsname(sb, NULL, 0));
770 rc += snprintf(page + rc, count - rc, "%s ", str[i]);
775 rc += snprintf(page + rc, count - rc, "\b\n");
779 static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
780 { "uuid", ll_rd_sb_uuid, 0, 0 },
781 //{ "mntpt_path", ll_rd_path, 0, 0 },
782 { "fstype", ll_rd_fstype, 0, 0 },
783 { "site", ll_rd_site_stats, 0, 0 },
784 { "blocksize", ll_rd_blksize, 0, 0 },
785 { "kbytestotal", ll_rd_kbytestotal, 0, 0 },
786 { "kbytesfree", ll_rd_kbytesfree, 0, 0 },
787 { "kbytesavail", ll_rd_kbytesavail, 0, 0 },
788 { "filestotal", ll_rd_filestotal, 0, 0 },
789 { "filesfree", ll_rd_filesfree, 0, 0 },
790 { "client_type", ll_rd_client_type, 0, 0 },
791 //{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
792 { "max_read_ahead_mb", ll_rd_max_readahead_mb,
793 ll_wr_max_readahead_mb, 0 },
794 { "max_read_ahead_per_file_mb", ll_rd_max_readahead_per_file_mb,
795 ll_wr_max_readahead_per_file_mb, 0 },
796 { "max_read_ahead_whole_mb", ll_rd_max_read_ahead_whole_mb,
797 ll_wr_max_read_ahead_whole_mb, 0 },
798 { "max_cached_mb", ll_rd_max_cached_mb, ll_wr_max_cached_mb, 0 },
799 { "checksum_pages", ll_rd_checksum, ll_wr_checksum, 0 },
800 { "max_rw_chunk", ll_rd_max_rw_chunk, ll_wr_max_rw_chunk, 0 },
801 { "stats_track_pid", ll_rd_track_pid, ll_wr_track_pid, 0 },
802 { "stats_track_ppid", ll_rd_track_ppid, ll_wr_track_ppid, 0 },
803 { "stats_track_gid", ll_rd_track_gid, ll_wr_track_gid, 0 },
804 { "statahead_max", ll_rd_statahead_max, ll_wr_statahead_max, 0 },
805 { "statahead_agl", ll_rd_statahead_agl, ll_wr_statahead_agl, 0 },
806 { "statahead_stats", ll_rd_statahead_stats, 0, 0 },
807 { "lazystatfs", ll_rd_lazystatfs, ll_wr_lazystatfs, 0 },
808 { "max_easize", ll_rd_maxea_size, 0, 0 },
809 { "sbi_flags", ll_rd_sbi_flags, 0, 0 },
810 { "xattr_cache", ll_rd_xattr_cache, ll_wr_xattr_cache, 0 },
814 #define MAX_STRING_SIZE 128
816 struct llite_file_opcode {
820 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
822 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
823 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
824 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
826 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
828 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
830 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
832 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
834 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
836 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
837 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
838 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
839 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
840 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
841 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
842 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
843 /* inode operation */
844 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
845 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
846 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
847 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
848 /* dir inode operation */
849 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
850 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
851 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
852 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
853 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
854 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
855 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
856 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
857 /* special inode operation */
858 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
859 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
860 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
861 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
862 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
863 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
864 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
865 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
868 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
872 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
873 lprocfs_counter_add(sbi->ll_stats, op, count);
874 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
875 sbi->ll_stats_track_id == current->pid)
876 lprocfs_counter_add(sbi->ll_stats, op, count);
877 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
878 sbi->ll_stats_track_id == current->parent->pid)
879 lprocfs_counter_add(sbi->ll_stats, op, count);
880 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
881 sbi->ll_stats_track_id == current_gid())
882 lprocfs_counter_add(sbi->ll_stats, op, count);
884 EXPORT_SYMBOL(ll_stats_ops_tally);
886 static const char *ra_stat_string[] = {
887 [RA_STAT_HIT] = "hits",
888 [RA_STAT_MISS] = "misses",
889 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
890 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
891 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
892 [RA_STAT_FAILED_MATCH] = "failed lock match",
893 [RA_STAT_DISCARDED] = "read but discarded",
894 [RA_STAT_ZERO_LEN] = "zero length file",
895 [RA_STAT_ZERO_WINDOW] = "zero size window",
896 [RA_STAT_EOF] = "read-ahead to EOF",
897 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
898 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
902 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
903 struct super_block *sb, char *osc, char *mdc)
905 struct lprocfs_vars lvars[2];
906 struct lustre_sb_info *lsi = s2lsi(sb);
907 struct ll_sb_info *sbi = ll_s2sbi(sb);
908 struct obd_device *obd;
909 char name[MAX_STRING_SIZE + 1], *ptr;
910 int err, id, len, rc;
913 memset(lvars, 0, sizeof(lvars));
915 name[MAX_STRING_SIZE] = '\0';
916 lvars[0].name = name;
918 LASSERT(sbi != NULL);
919 LASSERT(mdc != NULL);
920 LASSERT(osc != NULL);
923 len = strlen(lsi->lsi_lmd->lmd_profile);
924 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
925 if (ptr && (strcmp(ptr, "-client") == 0))
929 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
930 lsi->lsi_lmd->lmd_profile, sb);
932 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
933 if (IS_ERR(sbi->ll_proc_root)) {
934 err = PTR_ERR(sbi->ll_proc_root);
935 sbi->ll_proc_root = NULL;
939 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
940 &vvp_dump_pgcache_file_ops, sbi);
942 CWARN("Error adding the dump_page_cache file\n");
944 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
945 &ll_rw_extents_stats_fops, sbi);
947 CWARN("Error adding the extent_stats file\n");
949 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
950 0644, &ll_rw_extents_stats_pp_fops, sbi);
952 CWARN("Error adding the extents_stats_per_process file\n");
954 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
955 &ll_rw_offset_stats_fops, sbi);
957 CWARN("Error adding the offset_stats file\n");
959 /* File operations stats */
960 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
961 LPROCFS_STATS_FLAG_NONE);
962 if (sbi->ll_stats == NULL)
963 GOTO(out, err = -ENOMEM);
964 /* do counter init */
965 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
966 __u32 type = llite_opcode_table[id].type;
968 if (type & LPROCFS_TYPE_REGS)
970 else if (type & LPROCFS_TYPE_BYTES)
972 else if (type & LPROCFS_TYPE_PAGES)
974 lprocfs_counter_init(sbi->ll_stats,
975 llite_opcode_table[id].opcode,
976 (type & LPROCFS_CNTR_AVGMINMAX),
977 llite_opcode_table[id].opname, ptr);
979 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
983 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
984 LPROCFS_STATS_FLAG_NONE);
985 if (sbi->ll_ra_stats == NULL)
986 GOTO(out, err = -ENOMEM);
988 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
989 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
990 ra_stat_string[id], "pages");
991 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
997 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1002 obd = class_name2obd(mdc);
1004 LASSERT(obd != NULL);
1005 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1006 LASSERT(obd->obd_type->typ_name != NULL);
1008 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
1009 obd->obd_type->typ_name);
1010 lvars[0].read_fptr = lprocfs_rd_name;
1011 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
1015 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
1016 lvars[0].read_fptr = lprocfs_rd_uuid;
1017 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
1022 obd = class_name2obd(osc);
1024 LASSERT(obd != NULL);
1025 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1026 LASSERT(obd->obd_type->typ_name != NULL);
1028 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
1029 obd->obd_type->typ_name);
1030 lvars[0].read_fptr = lprocfs_rd_name;
1031 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
1035 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
1036 lvars[0].read_fptr = lprocfs_rd_uuid;
1037 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
1040 lprocfs_remove(&sbi->ll_proc_root);
1041 lprocfs_free_stats(&sbi->ll_ra_stats);
1042 lprocfs_free_stats(&sbi->ll_stats);
1047 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1049 if (sbi->ll_proc_root) {
1050 lprocfs_remove(&sbi->ll_proc_root);
1051 lprocfs_free_stats(&sbi->ll_ra_stats);
1052 lprocfs_free_stats(&sbi->ll_stats);
1055 #undef MAX_STRING_SIZE
1057 #define pct(a,b) (b ? a * 100 / b : 0)
1059 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1060 struct seq_file *seq, int which)
1062 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1063 unsigned long start, end, r, w;
1064 char *unitp = "KMGTPEZY";
1066 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1072 for(i = 0; i < LL_HIST_MAX; i++) {
1073 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1074 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1077 for(i = 0; i < LL_HIST_MAX; i++) {
1078 r = pp_info->pp_r_hist.oh_buckets[i];
1079 w = pp_info->pp_w_hist.oh_buckets[i];
1082 end = 1 << (i + LL_HIST_START - units);
1083 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1084 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1085 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1086 r, pct(r, read_tot), pct(read_cum, read_tot),
1087 w, pct(w, write_tot), pct(write_cum, write_tot));
1089 if (start == 1<<10) {
1094 if (read_cum == read_tot && write_cum == write_tot)
1099 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1102 struct ll_sb_info *sbi = seq->private;
1103 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1106 do_gettimeofday(&now);
1108 if (!sbi->ll_rw_stats_on) {
1109 seq_printf(seq, "disabled\n"
1110 "write anything in this file to activate, "
1111 "then 0 or \"[D/d]isabled\" to deactivate\n");
1114 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1115 now.tv_sec, now.tv_usec);
1116 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1117 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1118 "extents", "calls", "%", "cum%",
1119 "calls", "%", "cum%");
1120 spin_lock(&sbi->ll_pp_extent_lock);
1121 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1122 if (io_extents->pp_extents[k].pid != 0) {
1123 seq_printf(seq, "\nPID: %d\n",
1124 io_extents->pp_extents[k].pid);
1125 ll_display_extents_info(io_extents, seq, k);
1128 spin_unlock(&sbi->ll_pp_extent_lock);
1132 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1133 const char *buf, size_t len,
1136 struct seq_file *seq = file->private_data;
1137 struct ll_sb_info *sbi = seq->private;
1138 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1140 int value = 1, rc = 0;
1142 rc = lprocfs_write_helper(buf, len, &value);
1143 if (rc < 0 && (strcmp(buf, "disabled") == 0 ||
1144 strcmp(buf, "Disabled") == 0))
1148 sbi->ll_rw_stats_on = 0;
1150 sbi->ll_rw_stats_on = 1;
1152 spin_lock(&sbi->ll_pp_extent_lock);
1153 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1154 io_extents->pp_extents[i].pid = 0;
1155 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1156 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1158 spin_unlock(&sbi->ll_pp_extent_lock);
1162 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1164 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1167 struct ll_sb_info *sbi = seq->private;
1168 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1170 do_gettimeofday(&now);
1172 if (!sbi->ll_rw_stats_on) {
1173 seq_printf(seq, "disabled\n"
1174 "write anything in this file to activate, "
1175 "then 0 or \"[D/d]isabled\" to deactivate\n");
1178 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1179 now.tv_sec, now.tv_usec);
1181 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1182 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1183 "extents", "calls", "%", "cum%",
1184 "calls", "%", "cum%");
1185 spin_lock(&sbi->ll_lock);
1186 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1187 spin_unlock(&sbi->ll_lock);
1192 static ssize_t ll_rw_extents_stats_seq_write(struct file *file, const char *buf,
1193 size_t len, loff_t *off)
1195 struct seq_file *seq = file->private_data;
1196 struct ll_sb_info *sbi = seq->private;
1197 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1199 int value = 1, rc = 0;
1201 rc = lprocfs_write_helper(buf, len, &value);
1202 if (rc < 0 && (strcmp(buf, "disabled") == 0 ||
1203 strcmp(buf, "Disabled") == 0))
1207 sbi->ll_rw_stats_on = 0;
1209 sbi->ll_rw_stats_on = 1;
1210 spin_lock(&sbi->ll_pp_extent_lock);
1211 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1212 io_extents->pp_extents[i].pid = 0;
1213 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1214 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1216 spin_unlock(&sbi->ll_pp_extent_lock);
1221 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1223 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1224 struct ll_file_data *file, loff_t pos,
1225 size_t count, int rw)
1228 struct ll_rw_process_info *process;
1229 struct ll_rw_process_info *offset;
1230 int *off_count = &sbi->ll_rw_offset_entry_count;
1231 int *process_count = &sbi->ll_offset_process_count;
1232 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1234 if(!sbi->ll_rw_stats_on)
1236 process = sbi->ll_rw_process_info;
1237 offset = sbi->ll_rw_offset_info;
1239 spin_lock(&sbi->ll_pp_extent_lock);
1240 /* Extent statistics */
1241 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1242 if(io_extents->pp_extents[i].pid == pid) {
1250 sbi->ll_extent_process_count =
1251 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1252 cur = sbi->ll_extent_process_count;
1253 io_extents->pp_extents[cur].pid = pid;
1254 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1255 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1258 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1259 (i < (LL_HIST_MAX - 1)); i++);
1261 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1262 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1264 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1265 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1267 spin_unlock(&sbi->ll_pp_extent_lock);
1269 spin_lock(&sbi->ll_process_lock);
1270 /* Offset statistics */
1271 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1272 if (process[i].rw_pid == pid) {
1273 if (process[i].rw_last_file != file) {
1274 process[i].rw_range_start = pos;
1275 process[i].rw_last_file_pos = pos + count;
1276 process[i].rw_smallest_extent = count;
1277 process[i].rw_largest_extent = count;
1278 process[i].rw_offset = 0;
1279 process[i].rw_last_file = file;
1280 spin_unlock(&sbi->ll_process_lock);
1283 if (process[i].rw_last_file_pos != pos) {
1285 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1286 offset[*off_count].rw_op = process[i].rw_op;
1287 offset[*off_count].rw_pid = pid;
1288 offset[*off_count].rw_range_start =
1289 process[i].rw_range_start;
1290 offset[*off_count].rw_range_end =
1291 process[i].rw_last_file_pos;
1292 offset[*off_count].rw_smallest_extent =
1293 process[i].rw_smallest_extent;
1294 offset[*off_count].rw_largest_extent =
1295 process[i].rw_largest_extent;
1296 offset[*off_count].rw_offset =
1297 process[i].rw_offset;
1298 process[i].rw_op = rw;
1299 process[i].rw_range_start = pos;
1300 process[i].rw_smallest_extent = count;
1301 process[i].rw_largest_extent = count;
1302 process[i].rw_offset = pos -
1303 process[i].rw_last_file_pos;
1305 if(process[i].rw_smallest_extent > count)
1306 process[i].rw_smallest_extent = count;
1307 if(process[i].rw_largest_extent < count)
1308 process[i].rw_largest_extent = count;
1309 process[i].rw_last_file_pos = pos + count;
1310 spin_unlock(&sbi->ll_process_lock);
1314 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1315 process[*process_count].rw_pid = pid;
1316 process[*process_count].rw_op = rw;
1317 process[*process_count].rw_range_start = pos;
1318 process[*process_count].rw_last_file_pos = pos + count;
1319 process[*process_count].rw_smallest_extent = count;
1320 process[*process_count].rw_largest_extent = count;
1321 process[*process_count].rw_offset = 0;
1322 process[*process_count].rw_last_file = file;
1323 spin_unlock(&sbi->ll_process_lock);
1326 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1329 struct ll_sb_info *sbi = seq->private;
1330 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1331 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1334 do_gettimeofday(&now);
1336 if (!sbi->ll_rw_stats_on) {
1337 seq_printf(seq, "disabled\n"
1338 "write anything in this file to activate, "
1339 "then 0 or \"[D/d]isabled\" to deactivate\n");
1342 spin_lock(&sbi->ll_process_lock);
1344 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1345 now.tv_sec, now.tv_usec);
1346 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1347 "R/W", "PID", "RANGE START", "RANGE END",
1348 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1350 /* We stored the discontiguous offsets here; print them first */
1351 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1352 if (offset[i].rw_pid != 0)
1354 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1355 offset[i].rw_op == READ ? 'R' : 'W',
1357 offset[i].rw_range_start,
1358 offset[i].rw_range_end,
1359 (unsigned long)offset[i].rw_smallest_extent,
1360 (unsigned long)offset[i].rw_largest_extent,
1361 offset[i].rw_offset);
1364 /* Then print the current offsets for each process */
1365 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1366 if (process[i].rw_pid != 0)
1368 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1369 process[i].rw_op == READ ? 'R' : 'W',
1371 process[i].rw_range_start,
1372 process[i].rw_last_file_pos,
1373 (unsigned long)process[i].rw_smallest_extent,
1374 (unsigned long)process[i].rw_largest_extent,
1375 process[i].rw_offset);
1377 spin_unlock(&sbi->ll_process_lock);
1382 static ssize_t ll_rw_offset_stats_seq_write(struct file *file, const char *buf,
1383 size_t len, loff_t *off)
1385 struct seq_file *seq = file->private_data;
1386 struct ll_sb_info *sbi = seq->private;
1387 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1388 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1389 int value = 1, rc = 0;
1391 rc = lprocfs_write_helper(buf, len, &value);
1393 if (rc < 0 && (strcmp(buf, "disabled") == 0 ||
1394 strcmp(buf, "Disabled") == 0))
1398 sbi->ll_rw_stats_on = 0;
1400 sbi->ll_rw_stats_on = 1;
1402 spin_lock(&sbi->ll_process_lock);
1403 sbi->ll_offset_process_count = 0;
1404 sbi->ll_rw_offset_entry_count = 0;
1405 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1406 LL_PROCESS_HIST_MAX);
1407 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1408 LL_OFFSET_HIST_MAX);
1409 spin_unlock(&sbi->ll_process_lock);
1414 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1416 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
1418 lvars->module_vars = NULL;
1419 lvars->obd_vars = lprocfs_llite_obd_vars;
1421 #endif /* LPROCFS */