1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #define DEBUG_SUBSYSTEM S_LLITE
24 #include <linux/version.h>
25 #include <lustre_lite.h>
26 #include <lprocfs_status.h>
27 #include <linux/seq_file.h>
28 #include <obd_support.h>
30 #include "llite_internal.h"
32 struct proc_dir_entry *proc_lustre_fs_root;
35 /* /proc/lustre/llite mount point registration */
36 struct file_operations llite_dump_pgcache_fops;
37 struct file_operations ll_ra_stats_fops;
38 struct file_operations ll_rw_extents_stats_fops;
39 struct file_operations ll_rw_extents_stats_pp_fops;
40 struct file_operations ll_rw_offset_stats_fops;
42 static int ll_rd_blksize(char *page, char **start, off_t off, int count,
45 struct super_block *sb = (struct super_block *)data;
46 struct obd_statfs osfs;
50 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ,
54 rc = snprintf(page, count, "%u\n", osfs.os_bsize);
60 static int ll_rd_kbytestotal(char *page, char **start, off_t off, int count,
63 struct super_block *sb = (struct super_block *)data;
64 struct obd_statfs osfs;
68 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ,
71 __u32 blk_size = osfs.os_bsize >> 10;
72 __u64 result = osfs.os_blocks;
74 while (blk_size >>= 1)
78 rc = snprintf(page, count, LPU64"\n", result);
84 static int ll_rd_kbytesfree(char *page, char **start, off_t off, int count,
87 struct super_block *sb = (struct super_block *)data;
88 struct obd_statfs osfs;
92 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ,
95 __u32 blk_size = osfs.os_bsize >> 10;
96 __u64 result = osfs.os_bfree;
98 while (blk_size >>= 1)
102 rc = snprintf(page, count, LPU64"\n", result);
107 static int ll_rd_kbytesavail(char *page, char **start, off_t off, int count,
108 int *eof, void *data)
110 struct super_block *sb = (struct super_block *)data;
111 struct obd_statfs osfs;
115 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ,
118 __u32 blk_size = osfs.os_bsize >> 10;
119 __u64 result = osfs.os_bavail;
121 while (blk_size >>= 1)
125 rc = snprintf(page, count, LPU64"\n", result);
130 static int ll_rd_filestotal(char *page, char **start, off_t off, int count,
131 int *eof, void *data)
133 struct super_block *sb = (struct super_block *)data;
134 struct obd_statfs osfs;
138 rc = ll_statfs_internal(sb, &osfs, cfs_time_current_64() - HZ,
142 rc = snprintf(page, count, LPU64"\n", osfs.os_files);
147 static int ll_rd_filesfree(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, cfs_time_current_64() - HZ,
159 rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
165 static int ll_rd_client_type(char *page, char **start, off_t off, int count,
166 int *eof, void *data)
168 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)data);
171 LASSERT(sbi != NULL);
174 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
175 rc = snprintf(page, count, "remote client\n");
177 rc = snprintf(page, count, "local client\n");
182 static int ll_rd_fstype(char *page, char **start, off_t off, int count,
183 int *eof, void *data)
185 struct super_block *sb = (struct super_block*)data;
189 return snprintf(page, count, "%s\n", sb->s_type->name);
192 static int ll_rd_sb_uuid(char *page, char **start, off_t off, int count,
193 int *eof, void *data)
195 struct super_block *sb = (struct super_block *)data;
199 return snprintf(page, count, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
202 static int ll_rd_max_readahead_mb(char *page, char **start, off_t off,
203 int count, int *eof, void *data)
205 struct super_block *sb = data;
206 struct ll_sb_info *sbi = ll_s2sbi(sb);
210 spin_lock(&sbi->ll_lock);
211 pages_number = sbi->ll_ra_info.ra_max_pages;
212 spin_unlock(&sbi->ll_lock);
214 mult = 1 << (20 - PAGE_CACHE_SHIFT);
215 return lprocfs_read_frac_helper(page, count, pages_number, mult);
218 static int ll_wr_max_readahead_mb(struct file *file, const char *buffer,
219 unsigned long count, void *data)
221 struct super_block *sb = data;
222 struct ll_sb_info *sbi = ll_s2sbi(sb);
223 int mult, rc, pages_number;
225 mult = 1 << (20 - CFS_PAGE_SHIFT);
226 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
230 if (pages_number < 0 || pages_number > num_physpages / 2) {
231 CERROR("can't set file readahead more than %lu MB\n",
232 num_physpages >> (20 - CFS_PAGE_SHIFT + 1)); /*1/2 of RAM*/
236 spin_lock(&sbi->ll_lock);
237 sbi->ll_ra_info.ra_max_pages = pages_number;
238 spin_unlock(&sbi->ll_lock);
243 static int ll_rd_max_read_ahead_whole_mb(char *page, char **start, off_t off,
244 int count, int *eof, void *data)
246 struct super_block *sb = data;
247 struct ll_sb_info *sbi = ll_s2sbi(sb);
251 spin_lock(&sbi->ll_lock);
252 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
253 spin_unlock(&sbi->ll_lock);
255 mult = 1 << (20 - CFS_PAGE_SHIFT);
256 return lprocfs_read_frac_helper(page, count, pages_number, mult);
259 static int ll_wr_max_read_ahead_whole_mb(struct file *file, const char *buffer,
260 unsigned long count, void *data)
262 struct super_block *sb = data;
263 struct ll_sb_info *sbi = ll_s2sbi(sb);
264 int mult, rc, pages_number;
266 mult = 1 << (20 - CFS_PAGE_SHIFT);
267 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
271 /* Cap this at the current max readahead window size, the readahead
272 * algorithm does this anyway so it's pointless to set it larger. */
273 if (pages_number < 0 || pages_number > sbi->ll_ra_info.ra_max_pages) {
274 CERROR("can't set max_read_ahead_whole_mb more than "
275 "max_read_ahead_mb: %lu\n",
276 sbi->ll_ra_info.ra_max_pages >> (20 - CFS_PAGE_SHIFT));
280 spin_lock(&sbi->ll_lock);
281 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
282 spin_unlock(&sbi->ll_lock);
287 static int ll_rd_max_cached_mb(char *page, char **start, off_t off,
288 int count, int *eof, void *data)
290 struct super_block *sb = data;
291 struct ll_sb_info *sbi = ll_s2sbi(sb);
295 spin_lock(&sbi->ll_lock);
296 pages_number = sbi->ll_async_page_max;
297 spin_unlock(&sbi->ll_lock);
299 mult = 1 << (20 - CFS_PAGE_SHIFT);
300 return lprocfs_read_frac_helper(page, count, pages_number, mult);;
303 static int ll_wr_max_cached_mb(struct file *file, const char *buffer,
304 unsigned long count, void *data)
306 struct super_block *sb = data;
307 struct ll_sb_info *sbi = ll_s2sbi(sb);
308 int mult, rc, pages_number;
310 mult = 1 << (20 - CFS_PAGE_SHIFT);
311 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
315 if (pages_number < 0 || pages_number > num_physpages) {
316 CERROR("can't set max cache more than %lu MB\n",
317 num_physpages >> (20 - CFS_PAGE_SHIFT));
321 spin_lock(&sbi->ll_lock);
322 sbi->ll_async_page_max = pages_number ;
323 spin_unlock(&sbi->ll_lock);
326 /* Not set up yet, don't call llap_shrink_cache */
329 if (sbi->ll_async_page_count >= sbi->ll_async_page_max)
330 llap_shrink_cache(sbi, 0);
335 static int ll_rd_checksum(char *page, char **start, off_t off,
336 int count, int *eof, void *data)
338 struct super_block *sb = data;
339 struct ll_sb_info *sbi = ll_s2sbi(sb);
341 return snprintf(page, count, "%u\n",
342 (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
345 static int ll_wr_checksum(struct file *file, const char *buffer,
346 unsigned long count, void *data)
348 struct super_block *sb = data;
349 struct ll_sb_info *sbi = ll_s2sbi(sb);
356 rc = lprocfs_write_helper(buffer, count, &val);
360 sbi->ll_flags |= LL_SBI_CHECKSUM;
362 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
364 rc = obd_set_info_async(sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
365 KEY_CHECKSUM, sizeof(val), &val, NULL);
367 CWARN("Failed to set OSC checksum flags: %d\n", rc);
372 static int ll_rd_max_rw_chunk(char *page, char **start, off_t off,
373 int count, int *eof, void *data)
375 struct super_block *sb = data;
377 return snprintf(page, count, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
380 static int ll_wr_max_rw_chunk(struct file *file, const char *buffer,
381 unsigned long count, void *data)
383 struct super_block *sb = data;
386 rc = lprocfs_write_helper(buffer, count, &val);
389 ll_s2sbi(sb)->ll_max_rw_chunk = val;
393 static int ll_rd_track_id(char *page, int count, void *data,
394 enum stats_track_type type)
396 struct super_block *sb = data;
398 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
399 return snprintf(page, count, "%d\n",
400 ll_s2sbi(sb)->ll_stats_track_id);
402 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
403 return snprintf(page, count, "0 (all)\n");
405 return snprintf(page, count, "untracked\n");
409 static int ll_wr_track_id(const char *buffer, unsigned long count, void *data,
410 enum stats_track_type type)
412 struct super_block *sb = data;
415 rc = lprocfs_write_helper(buffer, count, &pid);
418 ll_s2sbi(sb)->ll_stats_track_id = pid;
420 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
422 ll_s2sbi(sb)->ll_stats_track_type = type;
423 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
427 static int ll_rd_track_pid(char *page, char **start, off_t off,
428 int count, int *eof, void *data)
430 return (ll_rd_track_id(page, count, data, STATS_TRACK_PID));
433 static int ll_wr_track_pid(struct file *file, const char *buffer,
434 unsigned long count, void *data)
436 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PID));
439 static int ll_rd_track_ppid(char *page, char **start, off_t off,
440 int count, int *eof, void *data)
442 return (ll_rd_track_id(page, count, data, STATS_TRACK_PPID));
445 static int ll_wr_track_ppid(struct file *file, const char *buffer,
446 unsigned long count, void *data)
448 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PPID));
451 static int ll_rd_track_gid(char *page, char **start, off_t off,
452 int count, int *eof, void *data)
454 return (ll_rd_track_id(page, count, data, STATS_TRACK_GID));
457 static int ll_wr_track_gid(struct file *file, const char *buffer,
458 unsigned long count, void *data)
460 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_GID));
463 static int ll_rd_statahead_max(char *page, char **start, off_t off,
464 int count, int *eof, void *data)
466 struct super_block *sb = data;
467 struct ll_sb_info *sbi = ll_s2sbi(sb);
469 return snprintf(page, count, "%u\n", sbi->ll_sa_max);
472 static int ll_wr_statahead_max(struct file *file, const char *buffer,
473 unsigned long count, void *data)
475 struct super_block *sb = data;
476 struct ll_sb_info *sbi = ll_s2sbi(sb);
479 rc = lprocfs_write_helper(buffer, count, &val);
483 if (val >= 0 && val <= LL_SA_RPC_MAX)
484 sbi->ll_sa_max = val;
486 CERROR("Bad statahead_max value %d. Valid values are in the "
487 "range [0, %d]\n", val, LL_SA_RPC_MAX);
492 static int ll_rd_statahead_stats(char *page, char **start, off_t off,
493 int count, int *eof, void *data)
495 struct super_block *sb = data;
496 struct ll_sb_info *sbi = ll_s2sbi(sb);
498 return snprintf(page, count,
499 "statahead wrong: %u\n"
500 "statahead total: %u\n"
504 "miss count: %llu\n",
513 static int ll_rd_contention_time(char *page, char **start, off_t off,
514 int count, int *eof, void *data)
516 struct super_block *sb = data;
519 return snprintf(page, count, "%u\n", ll_s2sbi(sb)->ll_contention_time);
523 static int ll_wr_contention_time(struct file *file, const char *buffer,
524 unsigned long count, void *data)
526 struct super_block *sb = data;
527 struct ll_sb_info *sbi = ll_s2sbi(sb);
529 return lprocfs_write_helper(buffer, count,&sbi->ll_contention_time) ?:
533 static int ll_rd_lockless_truncate(char *page, char **start, off_t off,
534 int count, int *eof, void *data)
536 struct super_block *sb = data;
539 return snprintf(page, count, "%u\n",
540 ll_s2sbi(sb)->ll_lockless_truncate_enable);
543 static int ll_wr_lockless_truncate(struct file *file, const char *buffer,
544 unsigned long count, void *data)
546 struct super_block *sb = data;
547 struct ll_sb_info *sbi = ll_s2sbi(sb);
549 return lprocfs_write_helper(buffer, count,
550 &sbi->ll_lockless_truncate_enable)
554 static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
555 { "uuid", ll_rd_sb_uuid, 0, 0 },
556 //{ "mntpt_path", ll_rd_path, 0, 0 },
557 { "fstype", ll_rd_fstype, 0, 0 },
558 { "blocksize", ll_rd_blksize, 0, 0 },
559 { "kbytestotal", ll_rd_kbytestotal, 0, 0 },
560 { "kbytesfree", ll_rd_kbytesfree, 0, 0 },
561 { "kbytesavail", ll_rd_kbytesavail, 0, 0 },
562 { "filestotal", ll_rd_filestotal, 0, 0 },
563 { "filesfree", ll_rd_filesfree, 0, 0 },
564 { "client_type", ll_rd_client_type, 0, 0 },
565 //{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
566 { "max_read_ahead_mb", ll_rd_max_readahead_mb,
567 ll_wr_max_readahead_mb, 0 },
568 { "max_read_ahead_whole_mb", ll_rd_max_read_ahead_whole_mb,
569 ll_wr_max_read_ahead_whole_mb, 0 },
570 { "max_cached_mb", ll_rd_max_cached_mb, ll_wr_max_cached_mb, 0 },
571 { "checksum_pages", ll_rd_checksum, ll_wr_checksum, 0 },
572 { "max_rw_chunk", ll_rd_max_rw_chunk, ll_wr_max_rw_chunk, 0 },
573 { "stats_track_pid", ll_rd_track_pid, ll_wr_track_pid, 0 },
574 { "stats_track_ppid", ll_rd_track_ppid, ll_wr_track_ppid, 0 },
575 { "stats_track_gid", ll_rd_track_gid, ll_wr_track_gid, 0 },
576 { "statahead_max", ll_rd_statahead_max, ll_wr_statahead_max, 0 },
577 { "statahead_stats", ll_rd_statahead_stats, 0, 0 },
578 { "contention_seconds", ll_rd_contention_time, ll_wr_contention_time, 0},
579 { "lockless_truncate", ll_rd_lockless_truncate,
580 ll_wr_lockless_truncate, 0},
584 #define MAX_STRING_SIZE 128
586 struct llite_file_opcode {
590 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
592 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
593 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
594 { LPROC_LL_WB_WRITEPAGE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
595 "writeback_from_writepage" },
596 { LPROC_LL_WB_PRESSURE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
597 "writeback_from_pressure" },
598 { LPROC_LL_WB_OK, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
599 "writeback_ok_pages" },
600 { LPROC_LL_WB_FAIL, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
601 "writeback_failed_pages" },
602 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
604 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
606 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
608 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
611 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
612 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
613 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
614 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
615 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
616 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
617 /* inode operation */
618 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
619 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
620 { LPROC_LL_LOCKLESS_TRUNC, LPROCFS_TYPE_REGS, "lockless_truncate"},
621 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
622 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
623 /* special inode operation */
624 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
625 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
626 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
627 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
628 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
629 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
630 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
631 { LPROC_LL_DIRECT_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
633 { LPROC_LL_DIRECT_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
635 { LPROC_LL_LOCKLESS_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
636 "lockless_read_bytes" },
637 { LPROC_LL_LOCKLESS_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
638 "lockless_write_bytes" },
642 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
646 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
647 lprocfs_counter_add(sbi->ll_stats, op, count);
648 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
649 sbi->ll_stats_track_id == current->pid)
650 lprocfs_counter_add(sbi->ll_stats, op, count);
651 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
652 sbi->ll_stats_track_id == current->p_pptr->pid)
653 lprocfs_counter_add(sbi->ll_stats, op, count);
654 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
655 sbi->ll_stats_track_id == current->gid)
656 lprocfs_counter_add(sbi->ll_stats, op, count);
658 EXPORT_SYMBOL(ll_stats_ops_tally);
660 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
661 struct super_block *sb, char *osc, char *mdc)
663 struct lprocfs_vars lvars[2];
664 struct lustre_sb_info *lsi = s2lsi(sb);
665 struct ll_sb_info *sbi = ll_s2sbi(sb);
666 struct obd_device *obd;
667 char name[MAX_STRING_SIZE + 1], *ptr;
668 int err, id, len, rc;
671 memset(lvars, 0, sizeof(lvars));
673 name[MAX_STRING_SIZE] = '\0';
674 lvars[0].name = name;
676 LASSERT(sbi != NULL);
677 LASSERT(mdc != NULL);
678 LASSERT(osc != NULL);
681 len = strlen(lsi->lsi_lmd->lmd_profile);
682 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
683 if (ptr && (strcmp(ptr, "-client") == 0))
687 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
688 lsi->lsi_lmd->lmd_profile, sb);
690 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
691 if (IS_ERR(sbi->ll_proc_root)) {
692 err = PTR_ERR(sbi->ll_proc_root);
693 sbi->ll_proc_root = NULL;
698 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
699 &llite_dump_pgcache_fops, sbi);
701 CWARN("Error adding the dump_page_cache file\n");
703 rc = lprocfs_seq_create(sbi->ll_proc_root, "read_ahead_stats", 0644,
704 &ll_ra_stats_fops, sbi);
706 CWARN("Error adding the read_ahead_stats file\n");
708 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
709 &ll_rw_extents_stats_fops, sbi);
711 CWARN("Error adding the extent_stats file\n");
713 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
714 0644, &ll_rw_extents_stats_pp_fops, sbi);
716 CWARN("Error adding the extents_stats_per_process file\n");
718 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
719 &ll_rw_offset_stats_fops, sbi);
721 CWARN("Error adding the offset_stats file\n");
723 /* File operations stats */
724 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
725 LPROCFS_STATS_FLAG_PERCPU);
726 if (sbi->ll_stats == NULL)
727 GOTO(out, err = -ENOMEM);
728 /* do counter init */
729 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
730 __u32 type = llite_opcode_table[id].type;
732 if (type & LPROCFS_TYPE_REGS)
734 else if (type & LPROCFS_TYPE_BYTES)
736 else if (type & LPROCFS_TYPE_PAGES)
738 lprocfs_counter_init(sbi->ll_stats,
739 llite_opcode_table[id].opcode,
740 (type & LPROCFS_CNTR_AVGMINMAX),
741 llite_opcode_table[id].opname, ptr);
743 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
747 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
752 obd = class_name2obd(mdc);
754 LASSERT(obd != NULL);
755 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
756 LASSERT(obd->obd_type->typ_name != NULL);
758 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
759 obd->obd_type->typ_name);
760 lvars[0].read_fptr = lprocfs_rd_name;
761 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
765 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
766 lvars[0].read_fptr = lprocfs_rd_uuid;
767 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
772 obd = class_name2obd(osc);
774 LASSERT(obd != NULL);
775 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
776 LASSERT(obd->obd_type->typ_name != NULL);
778 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
779 obd->obd_type->typ_name);
780 lvars[0].read_fptr = lprocfs_rd_name;
781 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
785 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
786 lvars[0].read_fptr = lprocfs_rd_uuid;
787 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
790 lprocfs_remove(&sbi->ll_proc_root);
791 lprocfs_free_stats(&sbi->ll_stats);
796 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
798 if (sbi->ll_proc_root) {
799 lprocfs_remove(&sbi->ll_proc_root);
800 lprocfs_free_stats(&sbi->ll_stats);
803 #undef MAX_STRING_SIZE
805 #define seq_page_flag(seq, page, flag, has_flags) do { \
806 if (test_bit(PG_##flag, &(page)->flags)) { \
810 seq_putc(seq, '|'); \
811 seq_puts(seq, #flag); \
815 static void *llite_dump_pgcache_seq_start(struct seq_file *seq, loff_t *pos)
817 struct ll_async_page *dummy_llap = seq->private;
819 if (dummy_llap->llap_magic == 2)
825 static int llite_dump_pgcache_seq_show(struct seq_file *seq, void *v)
827 struct ll_async_page *llap, *dummy_llap = seq->private;
828 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
830 /* 2.4 doesn't seem to have SEQ_START_TOKEN, so we implement
831 * it in our own state */
832 if (dummy_llap->llap_magic == 0) {
833 seq_printf(seq, "gener | llap cookie origin wq du wb | page "
834 "inode index count [ page flags ]\n");
838 spin_lock(&sbi->ll_lock);
840 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_pglist_item);
843 struct page *page = llap->llap_page;
845 LASSERTF(llap->llap_origin < LLAP__ORIGIN_MAX, "%u\n",
848 seq_printf(seq," %5lu | %p %p %s %s %s %s | %p %lu/%u(%p) "
851 llap, llap->llap_cookie,
852 llap_origins[llap->llap_origin],
853 llap->llap_write_queued ? "wq" : "- ",
854 llap->llap_defer_uptodate ? "du" : "- ",
855 PageWriteback(page) ? "wb" : "-",
856 page, page->mapping->host->i_ino,
857 page->mapping->host->i_generation,
858 page->mapping->host, page->index,
860 seq_page_flag(seq, page, locked, has_flags);
861 seq_page_flag(seq, page, error, has_flags);
862 seq_page_flag(seq, page, referenced, has_flags);
863 seq_page_flag(seq, page, uptodate, has_flags);
864 seq_page_flag(seq, page, dirty, has_flags);
865 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,12))
866 seq_page_flag(seq, page, highmem, has_flags);
868 seq_page_flag(seq, page, writeback, has_flags);
870 seq_puts(seq, "-]\n");
872 seq_puts(seq, "]\n");
875 spin_unlock(&sbi->ll_lock);
880 static void *llite_dump_pgcache_seq_next(struct seq_file *seq, void *v,
883 struct ll_async_page *llap, *dummy_llap = seq->private;
884 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
886 /* bail if we just displayed the banner */
887 if (dummy_llap->llap_magic == 0) {
888 dummy_llap->llap_magic = 1;
892 /* we've just displayed the llap that is after us in the list.
893 * we advance to a position beyond it, returning null if there
894 * isn't another llap in the list beyond that new position. */
895 spin_lock(&sbi->ll_lock);
896 llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_pglist_item);
897 list_del_init(&dummy_llap->llap_pglist_item);
899 list_add(&dummy_llap->llap_pglist_item,&llap->llap_pglist_item);
900 llap =llite_pglist_next_llap(sbi,&dummy_llap->llap_pglist_item);
902 spin_unlock(&sbi->ll_lock);
906 dummy_llap->llap_magic = 2;
912 static void null_stop(struct seq_file *seq, void *v)
916 struct seq_operations llite_dump_pgcache_seq_sops = {
917 .start = llite_dump_pgcache_seq_start,
919 .next = llite_dump_pgcache_seq_next,
920 .show = llite_dump_pgcache_seq_show,
923 /* we're displaying llaps in a list_head list. we don't want to hold a lock
924 * while we walk the entire list, and we don't want to have to seek into
925 * the right position in the list as an app advances with many syscalls. we
926 * allocate a dummy llap and hang it off file->private. its position in
927 * the list records where the app is currently displaying. this way our
928 * seq .start and .stop don't actually do anything. .next returns null
929 * when the dummy hits the end of the list which eventually leads to .release
930 * where we tear down. this kind of displaying is super-racey, so we put
931 * a generation counter on the list so the output shows when the list
932 * changes between reads.
934 static int llite_dump_pgcache_seq_open(struct inode *inode, struct file *file)
936 struct proc_dir_entry *dp = PDE(inode);
937 struct ll_async_page *dummy_llap;
938 struct seq_file *seq;
939 struct ll_sb_info *sbi = dp->data;
942 LPROCFS_ENTRY_AND_CHECK(dp);
944 OBD_ALLOC_PTR_WAIT(dummy_llap);
945 if (dummy_llap == NULL)
947 dummy_llap->llap_page = NULL;
948 dummy_llap->llap_cookie = sbi;
949 dummy_llap->llap_magic = 0;
951 rc = seq_open(file, &llite_dump_pgcache_seq_sops);
953 OBD_FREE(dummy_llap, sizeof(*dummy_llap));
956 seq = file->private_data;
957 seq->private = dummy_llap;
959 spin_lock(&sbi->ll_lock);
960 list_add(&dummy_llap->llap_pglist_item, &sbi->ll_pglist);
961 spin_unlock(&sbi->ll_lock);
969 static int llite_dump_pgcache_seq_release(struct inode *inode,
972 struct seq_file *seq = file->private_data;
973 struct ll_async_page *dummy_llap = seq->private;
974 struct ll_sb_info *sbi = dummy_llap->llap_cookie;
976 spin_lock(&sbi->ll_lock);
977 if (!list_empty(&dummy_llap->llap_pglist_item))
978 list_del_init(&dummy_llap->llap_pglist_item);
979 spin_unlock(&sbi->ll_lock);
980 OBD_FREE(dummy_llap, sizeof(*dummy_llap));
982 return lprocfs_seq_release(inode, file);
985 struct file_operations llite_dump_pgcache_fops = {
986 .owner = THIS_MODULE,
987 .open = llite_dump_pgcache_seq_open,
989 .release = llite_dump_pgcache_seq_release,
992 static int ll_ra_stats_seq_show(struct seq_file *seq, void *v)
995 struct ll_sb_info *sbi = seq->private;
996 struct ll_ra_info *ra = &sbi->ll_ra_info;
998 static char *ra_stat_strings[] = {
999 [RA_STAT_HIT] = "hits",
1000 [RA_STAT_MISS] = "misses",
1001 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
1002 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
1003 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
1004 [RA_STAT_FAILED_MATCH] = "failed lock match",
1005 [RA_STAT_DISCARDED] = "read but discarded",
1006 [RA_STAT_ZERO_LEN] = "zero length file",
1007 [RA_STAT_ZERO_WINDOW] = "zero size window",
1008 [RA_STAT_EOF] = "read-ahead to EOF",
1009 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
1010 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
1013 do_gettimeofday(&now);
1015 spin_lock(&sbi->ll_lock);
1017 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1018 now.tv_sec, now.tv_usec);
1019 seq_printf(seq, "pending issued pages: %lu\n",
1022 for(i = 0; i < _NR_RA_STAT; i++)
1023 seq_printf(seq, "%-25s %lu\n", ra_stat_strings[i],
1026 spin_unlock(&sbi->ll_lock);
1031 static ssize_t ll_ra_stats_seq_write(struct file *file, const char *buf,
1032 size_t len, loff_t *off)
1034 struct seq_file *seq = file->private_data;
1035 struct ll_sb_info *sbi = seq->private;
1036 struct ll_ra_info *ra = &sbi->ll_ra_info;
1038 spin_lock(&sbi->ll_lock);
1039 memset(ra->ra_stats, 0, sizeof(ra->ra_stats));
1040 spin_unlock(&sbi->ll_lock);
1045 LPROC_SEQ_FOPS(ll_ra_stats);
1047 #define pct(a,b) (b ? a * 100 / b : 0)
1049 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1050 struct seq_file *seq, int which)
1052 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1053 unsigned long start, end, r, w;
1054 char *unitp = "KMGTPEZY";
1056 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1062 for(i = 0; i < LL_HIST_MAX; i++) {
1063 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1064 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1067 for(i = 0; i < LL_HIST_MAX; i++) {
1068 r = pp_info->pp_r_hist.oh_buckets[i];
1069 w = pp_info->pp_w_hist.oh_buckets[i];
1072 end = 1 << (i + LL_HIST_START - units);
1073 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1074 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1075 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1076 r, pct(r, read_tot), pct(read_cum, read_tot),
1077 w, pct(w, write_tot), pct(write_cum, write_tot));
1079 if (start == 1<<10) {
1084 if (read_cum == read_tot && write_cum == write_tot)
1089 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1092 struct ll_sb_info *sbi = seq->private;
1093 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1096 do_gettimeofday(&now);
1098 if (!sbi->ll_rw_stats_on) {
1099 seq_printf(seq, "Disabled\n"
1100 "Write anything in this file to activate\n");
1103 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1104 now.tv_sec, now.tv_usec);
1105 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1106 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1107 "extents", "calls", "%", "cum%",
1108 "calls", "%", "cum%");
1109 spin_lock(&sbi->ll_pp_extent_lock);
1110 for(k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1111 if(io_extents->pp_extents[k].pid != 0) {
1112 seq_printf(seq, "\nPID: %d\n",
1113 io_extents->pp_extents[k].pid);
1114 ll_display_extents_info(io_extents, seq, k);
1117 spin_unlock(&sbi->ll_pp_extent_lock);
1121 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1122 const char *buf, size_t len,
1125 struct seq_file *seq = file->private_data;
1126 struct ll_sb_info *sbi = seq->private;
1127 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1130 sbi->ll_rw_stats_on = 1;
1131 spin_lock(&sbi->ll_pp_extent_lock);
1132 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1133 io_extents->pp_extents[i].pid = 0;
1134 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1135 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1137 spin_unlock(&sbi->ll_pp_extent_lock);
1141 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1143 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1146 struct ll_sb_info *sbi = seq->private;
1147 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1149 do_gettimeofday(&now);
1151 if (!sbi->ll_rw_stats_on) {
1152 seq_printf(seq, "Disabled\n"
1153 "Write anything in this file to activate\n");
1156 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1157 now.tv_sec, now.tv_usec);
1159 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1160 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1161 "extents", "calls", "%", "cum%",
1162 "calls", "%", "cum%");
1163 spin_lock(&sbi->ll_lock);
1164 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1165 spin_unlock(&sbi->ll_lock);
1170 static ssize_t ll_rw_extents_stats_seq_write(struct file *file, const char *buf,
1171 size_t len, loff_t *off)
1173 struct seq_file *seq = file->private_data;
1174 struct ll_sb_info *sbi = seq->private;
1175 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1178 sbi->ll_rw_stats_on = 1;
1179 spin_lock(&sbi->ll_pp_extent_lock);
1180 for(i = 0; i <= LL_PROCESS_HIST_MAX; i++)
1182 io_extents->pp_extents[i].pid = 0;
1183 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1184 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1186 spin_unlock(&sbi->ll_pp_extent_lock);
1191 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1193 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file
1194 *file, size_t count, int rw)
1197 struct ll_rw_process_info *process;
1198 struct ll_rw_process_info *offset;
1199 int *off_count = &sbi->ll_rw_offset_entry_count;
1200 int *process_count = &sbi->ll_offset_process_count;
1201 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1203 if(!sbi->ll_rw_stats_on)
1205 process = sbi->ll_rw_process_info;
1206 offset = sbi->ll_rw_offset_info;
1208 spin_lock(&sbi->ll_pp_extent_lock);
1209 /* Extent statistics */
1210 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1211 if(io_extents->pp_extents[i].pid == pid) {
1219 sbi->ll_extent_process_count =
1220 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1221 cur = sbi->ll_extent_process_count;
1222 io_extents->pp_extents[cur].pid = pid;
1223 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1224 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1227 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1228 (i < (LL_HIST_MAX - 1)); i++);
1230 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1231 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1233 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1234 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1236 spin_unlock(&sbi->ll_pp_extent_lock);
1238 spin_lock(&sbi->ll_process_lock);
1239 /* Offset statistics */
1240 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1241 if (process[i].rw_pid == pid) {
1242 if (process[i].rw_last_file != file) {
1243 process[i].rw_range_start = file->f_pos;
1244 process[i].rw_last_file_pos =
1245 file->f_pos + count;
1246 process[i].rw_smallest_extent = count;
1247 process[i].rw_largest_extent = count;
1248 process[i].rw_offset = 0;
1249 process[i].rw_last_file = file;
1250 spin_unlock(&sbi->ll_process_lock);
1253 if (process[i].rw_last_file_pos != file->f_pos) {
1255 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1256 offset[*off_count].rw_op = process[i].rw_op;
1257 offset[*off_count].rw_pid = pid;
1258 offset[*off_count].rw_range_start =
1259 process[i].rw_range_start;
1260 offset[*off_count].rw_range_end =
1261 process[i].rw_last_file_pos;
1262 offset[*off_count].rw_smallest_extent =
1263 process[i].rw_smallest_extent;
1264 offset[*off_count].rw_largest_extent =
1265 process[i].rw_largest_extent;
1266 offset[*off_count].rw_offset =
1267 process[i].rw_offset;
1268 process[i].rw_op = rw;
1269 process[i].rw_range_start = file->f_pos;
1270 process[i].rw_smallest_extent = count;
1271 process[i].rw_largest_extent = count;
1272 process[i].rw_offset = file->f_pos -
1273 process[i].rw_last_file_pos;
1275 if(process[i].rw_smallest_extent > count)
1276 process[i].rw_smallest_extent = count;
1277 if(process[i].rw_largest_extent < count)
1278 process[i].rw_largest_extent = count;
1279 process[i].rw_last_file_pos = file->f_pos + count;
1280 spin_unlock(&sbi->ll_process_lock);
1284 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1285 process[*process_count].rw_pid = pid;
1286 process[*process_count].rw_op = rw;
1287 process[*process_count].rw_range_start = file->f_pos;
1288 process[*process_count].rw_last_file_pos = file->f_pos + count;
1289 process[*process_count].rw_smallest_extent = count;
1290 process[*process_count].rw_largest_extent = count;
1291 process[*process_count].rw_offset = 0;
1292 process[*process_count].rw_last_file = file;
1293 spin_unlock(&sbi->ll_process_lock);
1296 char lpszt[] = LPSZ;
1298 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1301 struct ll_sb_info *sbi = seq->private;
1302 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1303 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1307 do_gettimeofday(&now);
1309 if (!sbi->ll_rw_stats_on) {
1310 seq_printf(seq, "Disabled\n"
1311 "Write anything in this file to activate\n");
1314 spin_lock(&sbi->ll_process_lock);
1316 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1317 now.tv_sec, now.tv_usec);
1318 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1319 "R/W", "PID", "RANGE START", "RANGE END",
1320 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1321 sprintf(format, "%s%s%s%s%s\n",
1322 "%3c %10d %14Lu %14Lu %17", lpszt+1, " %17", lpszt+1, " %14Ld");
1323 /* We stored the discontiguous offsets here; print them first */
1324 for(i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1325 if (offset[i].rw_pid != 0)
1326 /* Is there a way to snip the '%' off of LPSZ? */
1327 seq_printf(seq, format,
1328 offset[i].rw_op ? 'W' : 'R',
1330 offset[i].rw_range_start,
1331 offset[i].rw_range_end,
1332 offset[i].rw_smallest_extent,
1333 offset[i].rw_largest_extent,
1334 offset[i].rw_offset);
1336 /* Then print the current offsets for each process */
1337 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1338 if (process[i].rw_pid != 0)
1339 seq_printf(seq, format,
1340 process[i].rw_op ? 'W' : 'R',
1342 process[i].rw_range_start,
1343 process[i].rw_last_file_pos,
1344 process[i].rw_smallest_extent,
1345 process[i].rw_largest_extent,
1346 process[i].rw_offset);
1348 spin_unlock(&sbi->ll_process_lock);
1353 static ssize_t ll_rw_offset_stats_seq_write(struct file *file, const char *buf,
1354 size_t len, loff_t *off)
1356 struct seq_file *seq = file->private_data;
1357 struct ll_sb_info *sbi = seq->private;
1358 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1359 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1361 sbi->ll_rw_stats_on = 1;
1363 spin_lock(&sbi->ll_process_lock);
1364 sbi->ll_offset_process_count = 0;
1365 sbi->ll_rw_offset_entry_count = 0;
1366 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1367 LL_PROCESS_HIST_MAX);
1368 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1369 LL_OFFSET_HIST_MAX);
1370 spin_unlock(&sbi->ll_process_lock);
1375 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1377 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
1379 lvars->module_vars = NULL;
1380 lvars->obd_vars = lprocfs_llite_obd_vars;
1382 #endif /* LPROCFS */