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, Whamcloud, Inc.
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_site_stats(char *page, char **start, off_t off,
222 int count, int *eof, void *data)
224 struct super_block *sb = data;
227 * See description of statistical counters in struct cl_site, and
230 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site),
234 static int ll_rd_max_readahead_mb(char *page, char **start, off_t off,
235 int count, int *eof, void *data)
237 struct super_block *sb = data;
238 struct ll_sb_info *sbi = ll_s2sbi(sb);
242 cfs_spin_lock(&sbi->ll_lock);
243 pages_number = sbi->ll_ra_info.ra_max_pages;
244 cfs_spin_unlock(&sbi->ll_lock);
246 mult = 1 << (20 - PAGE_CACHE_SHIFT);
247 return lprocfs_read_frac_helper(page, count, pages_number, mult);
250 static int ll_wr_max_readahead_mb(struct file *file, const char *buffer,
251 unsigned long count, void *data)
253 struct super_block *sb = data;
254 struct ll_sb_info *sbi = ll_s2sbi(sb);
255 int mult, rc, pages_number;
257 mult = 1 << (20 - CFS_PAGE_SHIFT);
258 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
262 if (pages_number < 0 || pages_number > cfs_num_physpages / 2) {
263 CERROR("can't set file readahead more than %lu MB\n",
264 cfs_num_physpages >> (20 - CFS_PAGE_SHIFT + 1)); /*1/2 of RAM*/
268 cfs_spin_lock(&sbi->ll_lock);
269 sbi->ll_ra_info.ra_max_pages = pages_number;
270 cfs_spin_unlock(&sbi->ll_lock);
275 static int ll_rd_max_readahead_per_file_mb(char *page, char **start, off_t off,
276 int count, int *eof, void *data)
278 struct super_block *sb = data;
279 struct ll_sb_info *sbi = ll_s2sbi(sb);
283 cfs_spin_lock(&sbi->ll_lock);
284 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
285 cfs_spin_unlock(&sbi->ll_lock);
287 mult = 1 << (20 - CFS_PAGE_SHIFT);
288 return lprocfs_read_frac_helper(page, count, pages_number, mult);
291 static int ll_wr_max_readahead_per_file_mb(struct file *file, const char *buffer,
292 unsigned long count, void *data)
294 struct super_block *sb = data;
295 struct ll_sb_info *sbi = ll_s2sbi(sb);
296 int mult, rc, pages_number;
298 mult = 1 << (20 - CFS_PAGE_SHIFT);
299 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
303 if (pages_number < 0 ||
304 pages_number > sbi->ll_ra_info.ra_max_pages) {
305 CERROR("can't set file readahead more than"
306 "max_read_ahead_mb %lu MB\n",
307 sbi->ll_ra_info.ra_max_pages);
311 cfs_spin_lock(&sbi->ll_lock);
312 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
313 cfs_spin_unlock(&sbi->ll_lock);
318 static int ll_rd_max_read_ahead_whole_mb(char *page, char **start, off_t off,
319 int count, int *eof, void *data)
321 struct super_block *sb = data;
322 struct ll_sb_info *sbi = ll_s2sbi(sb);
326 cfs_spin_lock(&sbi->ll_lock);
327 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
328 cfs_spin_unlock(&sbi->ll_lock);
330 mult = 1 << (20 - CFS_PAGE_SHIFT);
331 return lprocfs_read_frac_helper(page, count, pages_number, mult);
334 static int ll_wr_max_read_ahead_whole_mb(struct file *file, const char *buffer,
335 unsigned long count, void *data)
337 struct super_block *sb = data;
338 struct ll_sb_info *sbi = ll_s2sbi(sb);
339 int mult, rc, pages_number;
341 mult = 1 << (20 - CFS_PAGE_SHIFT);
342 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
346 /* Cap this at the current max readahead window size, the readahead
347 * algorithm does this anyway so it's pointless to set it larger. */
348 if (pages_number < 0 ||
349 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
350 CERROR("can't set max_read_ahead_whole_mb more than "
351 "max_read_ahead_per_file_mb: %lu\n",
352 sbi->ll_ra_info.ra_max_pages_per_file >> (20 - CFS_PAGE_SHIFT));
356 cfs_spin_lock(&sbi->ll_lock);
357 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
358 cfs_spin_unlock(&sbi->ll_lock);
363 static int ll_rd_max_cached_mb(char *page, char **start, off_t off,
364 int count, int *eof, void *data)
366 struct super_block *sb = data;
367 struct ll_sb_info *sbi = ll_s2sbi(sb);
368 struct cl_client_lru *lru = &sbi->ll_lru;
369 int shift = 20 - CFS_PAGE_SHIFT;
374 max_cached_mb = lru->ccl_page_max >> shift;
375 unused_mb = cfs_atomic_read(&lru->ccl_page_left) >> shift;
376 return snprintf(page, count,
378 "max_cached_mb: %d\n"
381 "reclaim_count: %u\n",
382 cfs_atomic_read(&lru->ccl_users),
384 max_cached_mb - unused_mb,
386 lru->ccl_reclaim_count);
389 static int ll_wr_max_cached_mb(struct file *file, const char *buffer,
390 unsigned long count, void *data)
392 struct super_block *sb = data;
393 struct ll_sb_info *sbi = ll_s2sbi(sb);
394 struct cl_client_lru *lru = &sbi->ll_lru;
395 int mult, rc, pages_number;
400 mult = 1 << (20 - CFS_PAGE_SHIFT);
401 buffer = lprocfs_find_named_value(buffer, "max_cached_mb:", &count);
402 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
406 if (pages_number < 0 || pages_number > cfs_num_physpages) {
407 CERROR("%s: can't set max cache more than %lu MB\n",
408 ll_get_fsname(sb, NULL, 0),
409 cfs_num_physpages >> (20 - CFS_PAGE_SHIFT));
413 if (sbi->ll_dt_exp == NULL)
416 cfs_spin_lock(&sbi->ll_lock);
417 diff = pages_number - lru->ccl_page_max;
418 cfs_spin_unlock(&sbi->ll_lock);
420 /* easy - add more LRU slots. */
422 cfs_atomic_add(diff, &lru->ccl_page_left);
430 /* reduce LRU budget from free slots. */
434 ov = cfs_atomic_read(&lru->ccl_page_left);
438 nv = ov > diff ? ov - diff : 0;
439 rc = cfs_atomic_cmpxchg(&lru->ccl_page_left, ov, nv);
440 if (likely(ov == rc)) {
450 /* difficult - have to ask OSCs to drop LRU slots. */
452 rc = obd_set_info_async(NULL, sbi->ll_dt_exp,
453 sizeof(KEY_LRU_SHRINK), KEY_LRU_SHRINK,
454 sizeof(tmp), &tmp, NULL);
461 cfs_spin_lock(&sbi->ll_lock);
462 lru->ccl_page_max = pages_number;
463 cfs_spin_unlock(&sbi->ll_lock);
466 cfs_atomic_add(nrpages, &lru->ccl_page_left);
471 static int ll_rd_checksum(char *page, char **start, off_t off,
472 int count, int *eof, void *data)
474 struct super_block *sb = data;
475 struct ll_sb_info *sbi = ll_s2sbi(sb);
477 return snprintf(page, count, "%u\n",
478 (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
481 static int ll_wr_checksum(struct file *file, const char *buffer,
482 unsigned long count, void *data)
484 struct super_block *sb = data;
485 struct ll_sb_info *sbi = ll_s2sbi(sb);
492 rc = lprocfs_write_helper(buffer, count, &val);
496 sbi->ll_flags |= LL_SBI_CHECKSUM;
498 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
500 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
501 KEY_CHECKSUM, sizeof(val), &val, NULL);
503 CWARN("Failed to set OSC checksum flags: %d\n", rc);
508 static int ll_rd_max_rw_chunk(char *page, char **start, off_t off,
509 int count, int *eof, void *data)
511 struct super_block *sb = data;
513 return snprintf(page, count, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
516 static int ll_wr_max_rw_chunk(struct file *file, const char *buffer,
517 unsigned long count, void *data)
519 struct super_block *sb = data;
522 rc = lprocfs_write_helper(buffer, count, &val);
525 ll_s2sbi(sb)->ll_max_rw_chunk = val;
529 static int ll_rd_track_id(char *page, int count, void *data,
530 enum stats_track_type type)
532 struct super_block *sb = data;
534 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
535 return snprintf(page, count, "%d\n",
536 ll_s2sbi(sb)->ll_stats_track_id);
538 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
539 return snprintf(page, count, "0 (all)\n");
541 return snprintf(page, count, "untracked\n");
545 static int ll_wr_track_id(const char *buffer, unsigned long count, void *data,
546 enum stats_track_type type)
548 struct super_block *sb = data;
551 rc = lprocfs_write_helper(buffer, count, &pid);
554 ll_s2sbi(sb)->ll_stats_track_id = pid;
556 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
558 ll_s2sbi(sb)->ll_stats_track_type = type;
559 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
563 static int ll_rd_track_pid(char *page, char **start, off_t off,
564 int count, int *eof, void *data)
566 return (ll_rd_track_id(page, count, data, STATS_TRACK_PID));
569 static int ll_wr_track_pid(struct file *file, const char *buffer,
570 unsigned long count, void *data)
572 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PID));
575 static int ll_rd_track_ppid(char *page, char **start, off_t off,
576 int count, int *eof, void *data)
578 return (ll_rd_track_id(page, count, data, STATS_TRACK_PPID));
581 static int ll_wr_track_ppid(struct file *file, const char *buffer,
582 unsigned long count, void *data)
584 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_PPID));
587 static int ll_rd_track_gid(char *page, char **start, off_t off,
588 int count, int *eof, void *data)
590 return (ll_rd_track_id(page, count, data, STATS_TRACK_GID));
593 static int ll_wr_track_gid(struct file *file, const char *buffer,
594 unsigned long count, void *data)
596 return (ll_wr_track_id(buffer, count, data, STATS_TRACK_GID));
599 static int ll_rd_statahead_max(char *page, char **start, off_t off,
600 int count, int *eof, void *data)
602 struct super_block *sb = data;
603 struct ll_sb_info *sbi = ll_s2sbi(sb);
605 return snprintf(page, count, "%u\n", sbi->ll_sa_max);
608 static int ll_wr_statahead_max(struct file *file, const char *buffer,
609 unsigned long count, void *data)
611 struct super_block *sb = data;
612 struct ll_sb_info *sbi = ll_s2sbi(sb);
615 rc = lprocfs_write_helper(buffer, count, &val);
619 if (val >= 0 && val <= LL_SA_RPC_MAX)
620 sbi->ll_sa_max = val;
622 CERROR("Bad statahead_max value %d. Valid values are in the "
623 "range [0, %d]\n", val, LL_SA_RPC_MAX);
628 static int ll_rd_statahead_agl(char *page, char **start, off_t off,
629 int count, int *eof, void *data)
631 struct super_block *sb = data;
632 struct ll_sb_info *sbi = ll_s2sbi(sb);
634 return snprintf(page, count, "%u\n",
635 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
638 static int ll_wr_statahead_agl(struct file *file, const char *buffer,
639 unsigned long count, void *data)
641 struct super_block *sb = data;
642 struct ll_sb_info *sbi = ll_s2sbi(sb);
645 rc = lprocfs_write_helper(buffer, count, &val);
650 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
652 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
657 static int ll_rd_statahead_stats(char *page, char **start, off_t off,
658 int count, int *eof, void *data)
660 struct super_block *sb = data;
661 struct ll_sb_info *sbi = ll_s2sbi(sb);
663 return snprintf(page, count,
664 "statahead total: %u\n"
665 "statahead wrong: %u\n"
667 atomic_read(&sbi->ll_sa_total),
668 atomic_read(&sbi->ll_sa_wrong),
669 atomic_read(&sbi->ll_agl_total));
672 static int ll_rd_lazystatfs(char *page, char **start, off_t off,
673 int count, int *eof, void *data)
675 struct super_block *sb = data;
676 struct ll_sb_info *sbi = ll_s2sbi(sb);
678 return snprintf(page, count, "%u\n",
679 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
682 static int ll_wr_lazystatfs(struct file *file, const char *buffer,
683 unsigned long count, void *data)
685 struct super_block *sb = data;
686 struct ll_sb_info *sbi = ll_s2sbi(sb);
689 rc = lprocfs_write_helper(buffer, count, &val);
694 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
696 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
701 static int ll_rd_maxea_size(char *page, char **start, off_t off,
702 int count, int *eof, void *data)
704 struct super_block *sb = data;
705 struct ll_sb_info *sbi = ll_s2sbi(sb);
709 rc = ll_get_max_mdsize(sbi, &ealen);
713 return snprintf(page, count, "%u\n", ealen);
716 static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
717 { "uuid", ll_rd_sb_uuid, 0, 0 },
718 //{ "mntpt_path", ll_rd_path, 0, 0 },
719 { "fstype", ll_rd_fstype, 0, 0 },
720 { "site", ll_rd_site_stats, 0, 0 },
721 { "blocksize", ll_rd_blksize, 0, 0 },
722 { "kbytestotal", ll_rd_kbytestotal, 0, 0 },
723 { "kbytesfree", ll_rd_kbytesfree, 0, 0 },
724 { "kbytesavail", ll_rd_kbytesavail, 0, 0 },
725 { "filestotal", ll_rd_filestotal, 0, 0 },
726 { "filesfree", ll_rd_filesfree, 0, 0 },
727 { "client_type", ll_rd_client_type, 0, 0 },
728 //{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
729 { "max_read_ahead_mb", ll_rd_max_readahead_mb,
730 ll_wr_max_readahead_mb, 0 },
731 { "max_read_ahead_per_file_mb", ll_rd_max_readahead_per_file_mb,
732 ll_wr_max_readahead_per_file_mb, 0 },
733 { "max_read_ahead_whole_mb", ll_rd_max_read_ahead_whole_mb,
734 ll_wr_max_read_ahead_whole_mb, 0 },
735 { "max_cached_mb", ll_rd_max_cached_mb, ll_wr_max_cached_mb, 0 },
736 { "checksum_pages", ll_rd_checksum, ll_wr_checksum, 0 },
737 { "max_rw_chunk", ll_rd_max_rw_chunk, ll_wr_max_rw_chunk, 0 },
738 { "stats_track_pid", ll_rd_track_pid, ll_wr_track_pid, 0 },
739 { "stats_track_ppid", ll_rd_track_ppid, ll_wr_track_ppid, 0 },
740 { "stats_track_gid", ll_rd_track_gid, ll_wr_track_gid, 0 },
741 { "statahead_max", ll_rd_statahead_max, ll_wr_statahead_max, 0 },
742 { "statahead_agl", ll_rd_statahead_agl, ll_wr_statahead_agl, 0 },
743 { "statahead_stats", ll_rd_statahead_stats, 0, 0 },
744 { "lazystatfs", ll_rd_lazystatfs, ll_wr_lazystatfs, 0 },
745 { "max_easize", ll_rd_maxea_size, 0, 0 },
749 #define MAX_STRING_SIZE 128
751 struct llite_file_opcode {
755 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
757 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
758 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
759 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
761 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
763 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
765 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
767 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
769 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
771 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
772 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
773 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
774 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
775 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
776 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
777 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
778 /* inode operation */
779 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
780 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
781 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
782 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
783 /* dir inode operation */
784 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
785 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
786 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
787 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
788 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
789 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
790 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
791 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
792 /* special inode operation */
793 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
794 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
795 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
796 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
797 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
798 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
799 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
802 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
806 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
807 lprocfs_counter_add(sbi->ll_stats, op, count);
808 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
809 sbi->ll_stats_track_id == current->pid)
810 lprocfs_counter_add(sbi->ll_stats, op, count);
811 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
812 sbi->ll_stats_track_id == current->parent->pid)
813 lprocfs_counter_add(sbi->ll_stats, op, count);
814 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
815 sbi->ll_stats_track_id == cfs_curproc_gid())
816 lprocfs_counter_add(sbi->ll_stats, op, count);
818 EXPORT_SYMBOL(ll_stats_ops_tally);
820 static const char *ra_stat_string[] = {
821 [RA_STAT_HIT] = "hits",
822 [RA_STAT_MISS] = "misses",
823 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
824 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
825 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
826 [RA_STAT_FAILED_MATCH] = "failed lock match",
827 [RA_STAT_DISCARDED] = "read but discarded",
828 [RA_STAT_ZERO_LEN] = "zero length file",
829 [RA_STAT_ZERO_WINDOW] = "zero size window",
830 [RA_STAT_EOF] = "read-ahead to EOF",
831 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
832 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
836 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
837 struct super_block *sb, char *osc, char *mdc)
839 struct lprocfs_vars lvars[2];
840 struct lustre_sb_info *lsi = s2lsi(sb);
841 struct ll_sb_info *sbi = ll_s2sbi(sb);
842 struct obd_device *obd;
843 char name[MAX_STRING_SIZE + 1], *ptr;
844 int err, id, len, rc;
847 memset(lvars, 0, sizeof(lvars));
849 name[MAX_STRING_SIZE] = '\0';
850 lvars[0].name = name;
852 LASSERT(sbi != NULL);
853 LASSERT(mdc != NULL);
854 LASSERT(osc != NULL);
857 len = strlen(lsi->lsi_lmd->lmd_profile);
858 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
859 if (ptr && (strcmp(ptr, "-client") == 0))
863 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
864 lsi->lsi_lmd->lmd_profile, sb);
866 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
867 if (IS_ERR(sbi->ll_proc_root)) {
868 err = PTR_ERR(sbi->ll_proc_root);
869 sbi->ll_proc_root = NULL;
873 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
874 &vvp_dump_pgcache_file_ops, sbi);
876 CWARN("Error adding the dump_page_cache file\n");
878 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
879 &ll_rw_extents_stats_fops, sbi);
881 CWARN("Error adding the extent_stats file\n");
883 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
884 0644, &ll_rw_extents_stats_pp_fops, sbi);
886 CWARN("Error adding the extents_stats_per_process file\n");
888 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
889 &ll_rw_offset_stats_fops, sbi);
891 CWARN("Error adding the offset_stats file\n");
893 /* File operations stats */
894 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
895 LPROCFS_STATS_FLAG_NONE);
896 if (sbi->ll_stats == NULL)
897 GOTO(out, err = -ENOMEM);
898 /* do counter init */
899 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
900 __u32 type = llite_opcode_table[id].type;
902 if (type & LPROCFS_TYPE_REGS)
904 else if (type & LPROCFS_TYPE_BYTES)
906 else if (type & LPROCFS_TYPE_PAGES)
908 lprocfs_counter_init(sbi->ll_stats,
909 llite_opcode_table[id].opcode,
910 (type & LPROCFS_CNTR_AVGMINMAX),
911 llite_opcode_table[id].opname, ptr);
913 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
917 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
918 LPROCFS_STATS_FLAG_NONE);
919 if (sbi->ll_ra_stats == NULL)
920 GOTO(out, err = -ENOMEM);
922 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
923 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
924 ra_stat_string[id], "pages");
925 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
931 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
936 obd = class_name2obd(mdc);
938 LASSERT(obd != NULL);
939 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
940 LASSERT(obd->obd_type->typ_name != NULL);
942 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
943 obd->obd_type->typ_name);
944 lvars[0].read_fptr = lprocfs_rd_name;
945 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
949 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
950 lvars[0].read_fptr = lprocfs_rd_uuid;
951 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
956 obd = class_name2obd(osc);
958 LASSERT(obd != NULL);
959 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
960 LASSERT(obd->obd_type->typ_name != NULL);
962 snprintf(name, MAX_STRING_SIZE, "%s/common_name",
963 obd->obd_type->typ_name);
964 lvars[0].read_fptr = lprocfs_rd_name;
965 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
969 snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name);
970 lvars[0].read_fptr = lprocfs_rd_uuid;
971 err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd);
974 lprocfs_remove(&sbi->ll_proc_root);
975 lprocfs_free_stats(&sbi->ll_ra_stats);
976 lprocfs_free_stats(&sbi->ll_stats);
981 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
983 if (sbi->ll_proc_root) {
984 lprocfs_remove(&sbi->ll_proc_root);
985 lprocfs_free_stats(&sbi->ll_ra_stats);
986 lprocfs_free_stats(&sbi->ll_stats);
989 #undef MAX_STRING_SIZE
991 #define pct(a,b) (b ? a * 100 / b : 0)
993 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
994 struct seq_file *seq, int which)
996 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
997 unsigned long start, end, r, w;
998 char *unitp = "KMGTPEZY";
1000 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1006 for(i = 0; i < LL_HIST_MAX; i++) {
1007 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1008 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1011 for(i = 0; i < LL_HIST_MAX; i++) {
1012 r = pp_info->pp_r_hist.oh_buckets[i];
1013 w = pp_info->pp_w_hist.oh_buckets[i];
1016 end = 1 << (i + LL_HIST_START - units);
1017 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1018 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1019 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1020 r, pct(r, read_tot), pct(read_cum, read_tot),
1021 w, pct(w, write_tot), pct(write_cum, write_tot));
1023 if (start == 1<<10) {
1028 if (read_cum == read_tot && write_cum == write_tot)
1033 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1036 struct ll_sb_info *sbi = seq->private;
1037 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1040 cfs_gettimeofday(&now);
1042 if (!sbi->ll_rw_stats_on) {
1043 seq_printf(seq, "disabled\n"
1044 "write anything in this file to activate, "
1045 "then 0 or \"[D/d]isabled\" to deactivate\n");
1048 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1049 now.tv_sec, now.tv_usec);
1050 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1051 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1052 "extents", "calls", "%", "cum%",
1053 "calls", "%", "cum%");
1054 cfs_spin_lock(&sbi->ll_pp_extent_lock);
1055 for(k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1056 if(io_extents->pp_extents[k].pid != 0) {
1057 seq_printf(seq, "\nPID: %d\n",
1058 io_extents->pp_extents[k].pid);
1059 ll_display_extents_info(io_extents, seq, k);
1062 cfs_spin_unlock(&sbi->ll_pp_extent_lock);
1066 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1067 const char *buf, size_t len,
1070 struct seq_file *seq = file->private_data;
1071 struct ll_sb_info *sbi = seq->private;
1072 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1074 int value = 1, rc = 0;
1076 rc = lprocfs_write_helper(buf, len, &value);
1077 if (rc < 0 && (strcmp(buf, "disabled") == 0 ||
1078 strcmp(buf, "Disabled") == 0))
1082 sbi->ll_rw_stats_on = 0;
1084 sbi->ll_rw_stats_on = 1;
1086 cfs_spin_lock(&sbi->ll_pp_extent_lock);
1087 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1088 io_extents->pp_extents[i].pid = 0;
1089 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1090 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1092 cfs_spin_unlock(&sbi->ll_pp_extent_lock);
1096 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1098 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1101 struct ll_sb_info *sbi = seq->private;
1102 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1104 cfs_gettimeofday(&now);
1106 if (!sbi->ll_rw_stats_on) {
1107 seq_printf(seq, "disabled\n"
1108 "write anything in this file to activate, "
1109 "then 0 or \"[D/d]isabled\" to deactivate\n");
1112 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1113 now.tv_sec, now.tv_usec);
1115 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1116 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1117 "extents", "calls", "%", "cum%",
1118 "calls", "%", "cum%");
1119 cfs_spin_lock(&sbi->ll_lock);
1120 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1121 cfs_spin_unlock(&sbi->ll_lock);
1126 static ssize_t ll_rw_extents_stats_seq_write(struct file *file, const char *buf,
1127 size_t len, loff_t *off)
1129 struct seq_file *seq = file->private_data;
1130 struct ll_sb_info *sbi = seq->private;
1131 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1133 int value = 1, rc = 0;
1135 rc = lprocfs_write_helper(buf, len, &value);
1136 if (rc < 0 && (strcmp(buf, "disabled") == 0 ||
1137 strcmp(buf, "Disabled") == 0))
1141 sbi->ll_rw_stats_on = 0;
1143 sbi->ll_rw_stats_on = 1;
1144 cfs_spin_lock(&sbi->ll_pp_extent_lock);
1145 for(i = 0; i <= LL_PROCESS_HIST_MAX; i++)
1147 io_extents->pp_extents[i].pid = 0;
1148 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1149 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1151 cfs_spin_unlock(&sbi->ll_pp_extent_lock);
1156 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1158 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1159 struct ll_file_data *file, loff_t pos,
1160 size_t count, int rw)
1163 struct ll_rw_process_info *process;
1164 struct ll_rw_process_info *offset;
1165 int *off_count = &sbi->ll_rw_offset_entry_count;
1166 int *process_count = &sbi->ll_offset_process_count;
1167 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1169 if(!sbi->ll_rw_stats_on)
1171 process = sbi->ll_rw_process_info;
1172 offset = sbi->ll_rw_offset_info;
1174 cfs_spin_lock(&sbi->ll_pp_extent_lock);
1175 /* Extent statistics */
1176 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1177 if(io_extents->pp_extents[i].pid == pid) {
1185 sbi->ll_extent_process_count =
1186 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1187 cur = sbi->ll_extent_process_count;
1188 io_extents->pp_extents[cur].pid = pid;
1189 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1190 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1193 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1194 (i < (LL_HIST_MAX - 1)); i++);
1196 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1197 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1199 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1200 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1202 cfs_spin_unlock(&sbi->ll_pp_extent_lock);
1204 cfs_spin_lock(&sbi->ll_process_lock);
1205 /* Offset statistics */
1206 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1207 if (process[i].rw_pid == pid) {
1208 if (process[i].rw_last_file != file) {
1209 process[i].rw_range_start = pos;
1210 process[i].rw_last_file_pos = pos + count;
1211 process[i].rw_smallest_extent = count;
1212 process[i].rw_largest_extent = count;
1213 process[i].rw_offset = 0;
1214 process[i].rw_last_file = file;
1215 cfs_spin_unlock(&sbi->ll_process_lock);
1218 if (process[i].rw_last_file_pos != pos) {
1220 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1221 offset[*off_count].rw_op = process[i].rw_op;
1222 offset[*off_count].rw_pid = pid;
1223 offset[*off_count].rw_range_start =
1224 process[i].rw_range_start;
1225 offset[*off_count].rw_range_end =
1226 process[i].rw_last_file_pos;
1227 offset[*off_count].rw_smallest_extent =
1228 process[i].rw_smallest_extent;
1229 offset[*off_count].rw_largest_extent =
1230 process[i].rw_largest_extent;
1231 offset[*off_count].rw_offset =
1232 process[i].rw_offset;
1233 process[i].rw_op = rw;
1234 process[i].rw_range_start = pos;
1235 process[i].rw_smallest_extent = count;
1236 process[i].rw_largest_extent = count;
1237 process[i].rw_offset = pos -
1238 process[i].rw_last_file_pos;
1240 if(process[i].rw_smallest_extent > count)
1241 process[i].rw_smallest_extent = count;
1242 if(process[i].rw_largest_extent < count)
1243 process[i].rw_largest_extent = count;
1244 process[i].rw_last_file_pos = pos + count;
1245 cfs_spin_unlock(&sbi->ll_process_lock);
1249 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1250 process[*process_count].rw_pid = pid;
1251 process[*process_count].rw_op = rw;
1252 process[*process_count].rw_range_start = pos;
1253 process[*process_count].rw_last_file_pos = pos + count;
1254 process[*process_count].rw_smallest_extent = count;
1255 process[*process_count].rw_largest_extent = count;
1256 process[*process_count].rw_offset = 0;
1257 process[*process_count].rw_last_file = file;
1258 cfs_spin_unlock(&sbi->ll_process_lock);
1261 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1264 struct ll_sb_info *sbi = seq->private;
1265 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1266 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1269 cfs_gettimeofday(&now);
1271 if (!sbi->ll_rw_stats_on) {
1272 seq_printf(seq, "disabled\n"
1273 "write anything in this file to activate, "
1274 "then 0 or \"[D/d]isabled\" to deactivate\n");
1277 cfs_spin_lock(&sbi->ll_process_lock);
1279 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1280 now.tv_sec, now.tv_usec);
1281 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1282 "R/W", "PID", "RANGE START", "RANGE END",
1283 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1284 /* We stored the discontiguous offsets here; print them first */
1285 for(i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1286 if (offset[i].rw_pid != 0)
1287 seq_printf(seq,"%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1288 offset[i].rw_op ? 'W' : 'R',
1290 offset[i].rw_range_start,
1291 offset[i].rw_range_end,
1292 (unsigned long)offset[i].rw_smallest_extent,
1293 (unsigned long)offset[i].rw_largest_extent,
1294 offset[i].rw_offset);
1296 /* Then print the current offsets for each process */
1297 for(i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1298 if (process[i].rw_pid != 0)
1299 seq_printf(seq,"%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1300 process[i].rw_op ? 'W' : 'R',
1302 process[i].rw_range_start,
1303 process[i].rw_last_file_pos,
1304 (unsigned long)process[i].rw_smallest_extent,
1305 (unsigned long)process[i].rw_largest_extent,
1306 process[i].rw_offset);
1308 cfs_spin_unlock(&sbi->ll_process_lock);
1313 static ssize_t ll_rw_offset_stats_seq_write(struct file *file, const char *buf,
1314 size_t len, loff_t *off)
1316 struct seq_file *seq = file->private_data;
1317 struct ll_sb_info *sbi = seq->private;
1318 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1319 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1320 int value = 1, rc = 0;
1322 rc = lprocfs_write_helper(buf, len, &value);
1324 if (rc < 0 && (strcmp(buf, "disabled") == 0 ||
1325 strcmp(buf, "Disabled") == 0))
1329 sbi->ll_rw_stats_on = 0;
1331 sbi->ll_rw_stats_on = 1;
1333 cfs_spin_lock(&sbi->ll_process_lock);
1334 sbi->ll_offset_process_count = 0;
1335 sbi->ll_rw_offset_entry_count = 0;
1336 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1337 LL_PROCESS_HIST_MAX);
1338 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1339 LL_OFFSET_HIST_MAX);
1340 cfs_spin_unlock(&sbi->ll_process_lock);
1345 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1347 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
1349 lvars->module_vars = NULL;
1350 lvars->obd_vars = lprocfs_llite_obd_vars;
1352 #endif /* LPROCFS */