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[deliverable/linux.git] / drivers / staging / lustre / lustre / llite / lproc_llite.c
1 /*
2 * GPL HEADER START
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
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.
9 *
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).
15 *
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
19 *
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
22 * have any questions.
23 *
24 * GPL HEADER END
25 */
26 /*
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 *
30 * Copyright (c) 2011, 2012, Intel Corporation.
31 */
32 /*
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
35 */
36 #define DEBUG_SUBSYSTEM S_LLITE
37
38 #include "../include/lustre_lite.h"
39 #include "../include/lprocfs_status.h"
40 #include <linux/seq_file.h>
41 #include "../include/obd_support.h"
42
43 #include "llite_internal.h"
44 #include "vvp_internal.h"
45
46 /* /proc/lustre/llite mount point registration */
47 static struct file_operations ll_rw_extents_stats_fops;
48 static struct file_operations ll_rw_extents_stats_pp_fops;
49 static struct file_operations ll_rw_offset_stats_fops;
50
51 static int ll_blksize_seq_show(struct seq_file *m, void *v)
52 {
53 struct super_block *sb = (struct super_block *)m->private;
54 struct obd_statfs osfs;
55 int rc;
56
57 LASSERT(sb != NULL);
58 rc = ll_statfs_internal(sb, &osfs,
59 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
60 OBD_STATFS_NODELAY);
61 if (!rc)
62 rc = seq_printf(m, "%u\n", osfs.os_bsize);
63
64 return rc;
65 }
66 LPROC_SEQ_FOPS_RO(ll_blksize);
67
68 static int ll_kbytestotal_seq_show(struct seq_file *m, void *v)
69 {
70 struct super_block *sb = (struct super_block *)m->private;
71 struct obd_statfs osfs;
72 int rc;
73
74 LASSERT(sb != NULL);
75 rc = ll_statfs_internal(sb, &osfs,
76 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
77 OBD_STATFS_NODELAY);
78 if (!rc) {
79 __u32 blk_size = osfs.os_bsize >> 10;
80 __u64 result = osfs.os_blocks;
81
82 while (blk_size >>= 1)
83 result <<= 1;
84
85 rc = seq_printf(m, "%llu\n", result);
86 }
87 return rc;
88 }
89 LPROC_SEQ_FOPS_RO(ll_kbytestotal);
90
91 static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
92 {
93 struct super_block *sb = (struct super_block *)m->private;
94 struct obd_statfs osfs;
95 int rc;
96
97 LASSERT(sb != NULL);
98 rc = ll_statfs_internal(sb, &osfs,
99 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
100 OBD_STATFS_NODELAY);
101 if (!rc) {
102 __u32 blk_size = osfs.os_bsize >> 10;
103 __u64 result = osfs.os_bfree;
104
105 while (blk_size >>= 1)
106 result <<= 1;
107
108 rc = seq_printf(m, "%llu\n", result);
109 }
110 return rc;
111 }
112 LPROC_SEQ_FOPS_RO(ll_kbytesfree);
113
114 static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
115 {
116 struct super_block *sb = (struct super_block *)m->private;
117 struct obd_statfs osfs;
118 int rc;
119
120 LASSERT(sb != NULL);
121 rc = ll_statfs_internal(sb, &osfs,
122 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
123 OBD_STATFS_NODELAY);
124 if (!rc) {
125 __u32 blk_size = osfs.os_bsize >> 10;
126 __u64 result = osfs.os_bavail;
127
128 while (blk_size >>= 1)
129 result <<= 1;
130
131 rc = seq_printf(m, "%llu\n", result);
132 }
133 return rc;
134 }
135 LPROC_SEQ_FOPS_RO(ll_kbytesavail);
136
137 static int ll_filestotal_seq_show(struct seq_file *m, void *v)
138 {
139 struct super_block *sb = (struct super_block *)m->private;
140 struct obd_statfs osfs;
141 int rc;
142
143 LASSERT(sb != NULL);
144 rc = ll_statfs_internal(sb, &osfs,
145 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
146 OBD_STATFS_NODELAY);
147 if (!rc)
148 rc = seq_printf(m, "%llu\n", osfs.os_files);
149 return rc;
150 }
151 LPROC_SEQ_FOPS_RO(ll_filestotal);
152
153 static int ll_filesfree_seq_show(struct seq_file *m, void *v)
154 {
155 struct super_block *sb = (struct super_block *)m->private;
156 struct obd_statfs osfs;
157 int rc;
158
159 LASSERT(sb != NULL);
160 rc = ll_statfs_internal(sb, &osfs,
161 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
162 OBD_STATFS_NODELAY);
163 if (!rc)
164 rc = seq_printf(m, "%llu\n", osfs.os_ffree);
165 return rc;
166 }
167 LPROC_SEQ_FOPS_RO(ll_filesfree);
168
169 static int ll_client_type_seq_show(struct seq_file *m, void *v)
170 {
171 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
172 int rc;
173
174 LASSERT(sbi != NULL);
175
176 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
177 rc = seq_printf(m, "remote client\n");
178 else
179 rc = seq_printf(m, "local client\n");
180
181 return rc;
182 }
183 LPROC_SEQ_FOPS_RO(ll_client_type);
184
185 static int ll_fstype_seq_show(struct seq_file *m, void *v)
186 {
187 struct super_block *sb = (struct super_block *)m->private;
188
189 LASSERT(sb != NULL);
190 return seq_printf(m, "%s\n", sb->s_type->name);
191 }
192 LPROC_SEQ_FOPS_RO(ll_fstype);
193
194 static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
195 {
196 struct super_block *sb = (struct super_block *)m->private;
197
198 LASSERT(sb != NULL);
199 return seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
200 }
201 LPROC_SEQ_FOPS_RO(ll_sb_uuid);
202
203 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
204 {
205 struct super_block *sb = m->private;
206
207 /*
208 * See description of statistical counters in struct cl_site, and
209 * struct lu_site.
210 */
211 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
212 }
213 LPROC_SEQ_FOPS_RO(ll_site_stats);
214
215 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
216 {
217 struct super_block *sb = m->private;
218 struct ll_sb_info *sbi = ll_s2sbi(sb);
219 long pages_number;
220 int mult;
221
222 spin_lock(&sbi->ll_lock);
223 pages_number = sbi->ll_ra_info.ra_max_pages;
224 spin_unlock(&sbi->ll_lock);
225
226 mult = 1 << (20 - PAGE_CACHE_SHIFT);
227 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
228 }
229
230 static ssize_t ll_max_readahead_mb_seq_write(struct file *file,
231 const char __user *buffer,
232 size_t count, loff_t *off)
233 {
234 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
235 struct ll_sb_info *sbi = ll_s2sbi(sb);
236 int mult, rc, pages_number;
237
238 mult = 1 << (20 - PAGE_CACHE_SHIFT);
239 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
240 if (rc)
241 return rc;
242
243 if (pages_number < 0 || pages_number > totalram_pages / 2) {
244 CERROR("can't set file readahead more than %lu MB\n",
245 totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1)); /*1/2 of RAM*/
246 return -ERANGE;
247 }
248
249 spin_lock(&sbi->ll_lock);
250 sbi->ll_ra_info.ra_max_pages = pages_number;
251 spin_unlock(&sbi->ll_lock);
252
253 return count;
254 }
255 LPROC_SEQ_FOPS(ll_max_readahead_mb);
256
257 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
258 {
259 struct super_block *sb = m->private;
260 struct ll_sb_info *sbi = ll_s2sbi(sb);
261 long pages_number;
262 int mult;
263
264 spin_lock(&sbi->ll_lock);
265 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
266 spin_unlock(&sbi->ll_lock);
267
268 mult = 1 << (20 - PAGE_CACHE_SHIFT);
269 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
270 }
271
272 static ssize_t ll_max_readahead_per_file_mb_seq_write(struct file *file,
273 const char __user *buffer,
274 size_t count, loff_t *off)
275 {
276 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
277 struct ll_sb_info *sbi = ll_s2sbi(sb);
278 int mult, rc, pages_number;
279
280 mult = 1 << (20 - PAGE_CACHE_SHIFT);
281 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
282 if (rc)
283 return rc;
284
285 if (pages_number < 0 ||
286 pages_number > sbi->ll_ra_info.ra_max_pages) {
287 CERROR("can't set file readahead more than max_read_ahead_mb %lu MB\n",
288 sbi->ll_ra_info.ra_max_pages);
289 return -ERANGE;
290 }
291
292 spin_lock(&sbi->ll_lock);
293 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
294 spin_unlock(&sbi->ll_lock);
295
296 return count;
297 }
298 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
299
300 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *unused)
301 {
302 struct super_block *sb = m->private;
303 struct ll_sb_info *sbi = ll_s2sbi(sb);
304 long pages_number;
305 int mult;
306
307 spin_lock(&sbi->ll_lock);
308 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
309 spin_unlock(&sbi->ll_lock);
310
311 mult = 1 << (20 - PAGE_CACHE_SHIFT);
312 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
313 }
314
315 static ssize_t ll_max_read_ahead_whole_mb_seq_write(struct file *file,
316 const char __user *buffer,
317 size_t count, loff_t *off)
318 {
319 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
320 struct ll_sb_info *sbi = ll_s2sbi(sb);
321 int mult, rc, pages_number;
322
323 mult = 1 << (20 - PAGE_CACHE_SHIFT);
324 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
325 if (rc)
326 return rc;
327
328 /* Cap this at the current max readahead window size, the readahead
329 * algorithm does this anyway so it's pointless to set it larger. */
330 if (pages_number < 0 ||
331 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
332 CERROR("can't set max_read_ahead_whole_mb more than max_read_ahead_per_file_mb: %lu\n",
333 sbi->ll_ra_info.ra_max_pages_per_file >> (20 - PAGE_CACHE_SHIFT));
334 return -ERANGE;
335 }
336
337 spin_lock(&sbi->ll_lock);
338 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
339 spin_unlock(&sbi->ll_lock);
340
341 return count;
342 }
343 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
344
345 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
346 {
347 struct super_block *sb = m->private;
348 struct ll_sb_info *sbi = ll_s2sbi(sb);
349 struct cl_client_cache *cache = &sbi->ll_cache;
350 int shift = 20 - PAGE_CACHE_SHIFT;
351 int max_cached_mb;
352 int unused_mb;
353
354 max_cached_mb = cache->ccc_lru_max >> shift;
355 unused_mb = atomic_read(&cache->ccc_lru_left) >> shift;
356 return seq_printf(m,
357 "users: %d\n"
358 "max_cached_mb: %d\n"
359 "used_mb: %d\n"
360 "unused_mb: %d\n"
361 "reclaim_count: %u\n",
362 atomic_read(&cache->ccc_users),
363 max_cached_mb,
364 max_cached_mb - unused_mb,
365 unused_mb,
366 cache->ccc_lru_shrinkers);
367 }
368
369 static ssize_t ll_max_cached_mb_seq_write(struct file *file,
370 const char __user *buffer,
371 size_t count, loff_t *off)
372 {
373 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
374 struct ll_sb_info *sbi = ll_s2sbi(sb);
375 struct cl_client_cache *cache = &sbi->ll_cache;
376 int mult, rc, pages_number;
377 int diff = 0;
378 int nrpages = 0;
379 char kernbuf[128];
380
381 if (count >= sizeof(kernbuf))
382 return -EINVAL;
383
384 if (copy_from_user(kernbuf, buffer, count))
385 return -EFAULT;
386 kernbuf[count] = 0;
387
388 mult = 1 << (20 - PAGE_CACHE_SHIFT);
389 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
390 kernbuf;
391 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
392 if (rc)
393 return rc;
394
395 if (pages_number < 0 || pages_number > totalram_pages) {
396 CERROR("%s: can't set max cache more than %lu MB\n",
397 ll_get_fsname(sb, NULL, 0),
398 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
399 return -ERANGE;
400 }
401
402 if (sbi->ll_dt_exp == NULL)
403 return -ENODEV;
404
405 spin_lock(&sbi->ll_lock);
406 diff = pages_number - cache->ccc_lru_max;
407 spin_unlock(&sbi->ll_lock);
408
409 /* easy - add more LRU slots. */
410 if (diff >= 0) {
411 atomic_add(diff, &cache->ccc_lru_left);
412 rc = 0;
413 goto out;
414 }
415
416 diff = -diff;
417 while (diff > 0) {
418 int tmp;
419
420 /* reduce LRU budget from free slots. */
421 do {
422 int ov, nv;
423
424 ov = atomic_read(&cache->ccc_lru_left);
425 if (ov == 0)
426 break;
427
428 nv = ov > diff ? ov - diff : 0;
429 rc = atomic_cmpxchg(&cache->ccc_lru_left, ov, nv);
430 if (likely(ov == rc)) {
431 diff -= ov - nv;
432 nrpages += ov - nv;
433 break;
434 }
435 } while (1);
436
437 if (diff <= 0)
438 break;
439
440 /* difficult - have to ask OSCs to drop LRU slots. */
441 tmp = diff << 1;
442 rc = obd_set_info_async(NULL, sbi->ll_dt_exp,
443 sizeof(KEY_CACHE_LRU_SHRINK),
444 KEY_CACHE_LRU_SHRINK,
445 sizeof(tmp), &tmp, NULL);
446 if (rc < 0)
447 break;
448 }
449
450 out:
451 if (rc >= 0) {
452 spin_lock(&sbi->ll_lock);
453 cache->ccc_lru_max = pages_number;
454 spin_unlock(&sbi->ll_lock);
455 rc = count;
456 } else {
457 atomic_add(nrpages, &cache->ccc_lru_left);
458 }
459 return rc;
460 }
461 LPROC_SEQ_FOPS(ll_max_cached_mb);
462
463 static int ll_checksum_seq_show(struct seq_file *m, void *v)
464 {
465 struct super_block *sb = m->private;
466 struct ll_sb_info *sbi = ll_s2sbi(sb);
467
468 return seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
469 }
470
471 static ssize_t ll_checksum_seq_write(struct file *file,
472 const char __user *buffer,
473 size_t count, loff_t *off)
474 {
475 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
476 struct ll_sb_info *sbi = ll_s2sbi(sb);
477 int val, rc;
478
479 if (!sbi->ll_dt_exp)
480 /* Not set up yet */
481 return -EAGAIN;
482
483 rc = lprocfs_write_helper(buffer, count, &val);
484 if (rc)
485 return rc;
486 if (val)
487 sbi->ll_flags |= LL_SBI_CHECKSUM;
488 else
489 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
490
491 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
492 KEY_CHECKSUM, sizeof(val), &val, NULL);
493 if (rc)
494 CWARN("Failed to set OSC checksum flags: %d\n", rc);
495
496 return count;
497 }
498 LPROC_SEQ_FOPS(ll_checksum);
499
500 static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
501 {
502 struct super_block *sb = m->private;
503
504 return seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
505 }
506
507 static ssize_t ll_max_rw_chunk_seq_write(struct file *file,
508 const char __user *buffer,
509 size_t count, loff_t *off)
510 {
511 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
512 int rc, val;
513
514 rc = lprocfs_write_helper(buffer, count, &val);
515 if (rc)
516 return rc;
517 ll_s2sbi(sb)->ll_max_rw_chunk = val;
518 return count;
519 }
520 LPROC_SEQ_FOPS(ll_max_rw_chunk);
521
522 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
523 {
524 struct super_block *sb = m->private;
525
526 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
527 return seq_printf(m, "%d\n",
528 ll_s2sbi(sb)->ll_stats_track_id);
529
530 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
531 return seq_printf(m, "0 (all)\n");
532 } else {
533 return seq_printf(m, "untracked\n");
534 }
535 }
536
537 static int ll_wr_track_id(const char __user *buffer, unsigned long count,
538 void *data, enum stats_track_type type)
539 {
540 struct super_block *sb = data;
541 int rc, pid;
542
543 rc = lprocfs_write_helper(buffer, count, &pid);
544 if (rc)
545 return rc;
546 ll_s2sbi(sb)->ll_stats_track_id = pid;
547 if (pid == 0)
548 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
549 else
550 ll_s2sbi(sb)->ll_stats_track_type = type;
551 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
552 return count;
553 }
554
555 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
556 {
557 return ll_rd_track_id(m, STATS_TRACK_PID);
558 }
559
560 static ssize_t ll_track_pid_seq_write(struct file *file,
561 const char __user *buffer,
562 size_t count, loff_t *off)
563 {
564 struct seq_file *seq = file->private_data;
565 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
566 }
567 LPROC_SEQ_FOPS(ll_track_pid);
568
569 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
570 {
571 return ll_rd_track_id(m, STATS_TRACK_PPID);
572 }
573
574 static ssize_t ll_track_ppid_seq_write(struct file *file,
575 const char __user *buffer,
576 size_t count, loff_t *off)
577 {
578 struct seq_file *seq = file->private_data;
579 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
580 }
581 LPROC_SEQ_FOPS(ll_track_ppid);
582
583 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
584 {
585 return ll_rd_track_id(m, STATS_TRACK_GID);
586 }
587
588 static ssize_t ll_track_gid_seq_write(struct file *file,
589 const char __user *buffer,
590 size_t count, loff_t *off)
591 {
592 struct seq_file *seq = file->private_data;
593 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
594 }
595 LPROC_SEQ_FOPS(ll_track_gid);
596
597 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
598 {
599 struct super_block *sb = m->private;
600 struct ll_sb_info *sbi = ll_s2sbi(sb);
601
602 return seq_printf(m, "%u\n", sbi->ll_sa_max);
603 }
604
605 static ssize_t ll_statahead_max_seq_write(struct file *file,
606 const char __user *buffer,
607 size_t count, loff_t *off)
608 {
609 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
610 struct ll_sb_info *sbi = ll_s2sbi(sb);
611 int val, rc;
612
613 rc = lprocfs_write_helper(buffer, count, &val);
614 if (rc)
615 return rc;
616
617 if (val >= 0 && val <= LL_SA_RPC_MAX)
618 sbi->ll_sa_max = val;
619 else
620 CERROR("Bad statahead_max value %d. Valid values are in the range [0, %d]\n",
621 val, LL_SA_RPC_MAX);
622
623 return count;
624 }
625 LPROC_SEQ_FOPS(ll_statahead_max);
626
627 static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
628 {
629 struct super_block *sb = m->private;
630 struct ll_sb_info *sbi = ll_s2sbi(sb);
631
632 return seq_printf(m, "%u\n",
633 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
634 }
635
636 static ssize_t ll_statahead_agl_seq_write(struct file *file,
637 const char __user *buffer,
638 size_t count, loff_t *off)
639 {
640 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
641 struct ll_sb_info *sbi = ll_s2sbi(sb);
642 int val, rc;
643
644 rc = lprocfs_write_helper(buffer, count, &val);
645 if (rc)
646 return rc;
647
648 if (val)
649 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
650 else
651 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
652
653 return count;
654 }
655 LPROC_SEQ_FOPS(ll_statahead_agl);
656
657 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
658 {
659 struct super_block *sb = m->private;
660 struct ll_sb_info *sbi = ll_s2sbi(sb);
661
662 return seq_printf(m,
663 "statahead total: %u\n"
664 "statahead wrong: %u\n"
665 "agl total: %u\n",
666 atomic_read(&sbi->ll_sa_total),
667 atomic_read(&sbi->ll_sa_wrong),
668 atomic_read(&sbi->ll_agl_total));
669 }
670 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
671
672 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
673 {
674 struct super_block *sb = m->private;
675 struct ll_sb_info *sbi = ll_s2sbi(sb);
676
677 return seq_printf(m, "%u\n",
678 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
679 }
680
681 static ssize_t ll_lazystatfs_seq_write(struct file *file,
682 const char __user *buffer,
683 size_t count, loff_t *off)
684 {
685 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
686 struct ll_sb_info *sbi = ll_s2sbi(sb);
687 int val, rc;
688
689 rc = lprocfs_write_helper(buffer, count, &val);
690 if (rc)
691 return rc;
692
693 if (val)
694 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
695 else
696 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
697
698 return count;
699 }
700 LPROC_SEQ_FOPS(ll_lazystatfs);
701
702 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
703 {
704 struct super_block *sb = m->private;
705 struct ll_sb_info *sbi = ll_s2sbi(sb);
706 unsigned int ealen;
707 int rc;
708
709 rc = ll_get_max_mdsize(sbi, &ealen);
710 if (rc)
711 return rc;
712
713 return seq_printf(m, "%u\n", ealen);
714 }
715 LPROC_SEQ_FOPS_RO(ll_max_easize);
716
717 static int ll_defult_easize_seq_show(struct seq_file *m, void *v)
718 {
719 struct super_block *sb = m->private;
720 struct ll_sb_info *sbi = ll_s2sbi(sb);
721 unsigned int ealen;
722 int rc;
723
724 rc = ll_get_default_mdsize(sbi, &ealen);
725 if (rc)
726 return rc;
727
728 return seq_printf(m, "%u\n", ealen);
729 }
730 LPROC_SEQ_FOPS_RO(ll_defult_easize);
731
732 static int ll_max_cookiesize_seq_show(struct seq_file *m, void *v)
733 {
734 struct super_block *sb = m->private;
735 struct ll_sb_info *sbi = ll_s2sbi(sb);
736 unsigned int cookielen;
737 int rc;
738
739 rc = ll_get_max_cookiesize(sbi, &cookielen);
740 if (rc)
741 return rc;
742
743 return seq_printf(m, "%u\n", cookielen);
744 }
745 LPROC_SEQ_FOPS_RO(ll_max_cookiesize);
746
747 static int ll_defult_cookiesize_seq_show(struct seq_file *m, void *v)
748 {
749 struct super_block *sb = m->private;
750 struct ll_sb_info *sbi = ll_s2sbi(sb);
751 unsigned int cookielen;
752 int rc;
753
754 rc = ll_get_default_cookiesize(sbi, &cookielen);
755 if (rc)
756 return rc;
757
758 return seq_printf(m, "%u\n", cookielen);
759 }
760 LPROC_SEQ_FOPS_RO(ll_defult_cookiesize);
761
762 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
763 {
764 const char *str[] = LL_SBI_FLAGS;
765 struct super_block *sb = m->private;
766 int flags = ll_s2sbi(sb)->ll_flags;
767 int i = 0;
768
769 while (flags != 0) {
770 if (ARRAY_SIZE(str) <= i) {
771 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi flags please.\n",
772 ll_get_fsname(sb, NULL, 0));
773 return -EINVAL;
774 }
775
776 if (flags & 0x1)
777 seq_printf(m, "%s ", str[i]);
778 flags >>= 1;
779 ++i;
780 }
781 seq_printf(m, "\b\n");
782 return 0;
783 }
784 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
785
786 static int ll_xattr_cache_seq_show(struct seq_file *m, void *v)
787 {
788 struct super_block *sb = m->private;
789 struct ll_sb_info *sbi = ll_s2sbi(sb);
790 int rc;
791
792 rc = seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
793
794 return rc;
795 }
796
797 static ssize_t ll_xattr_cache_seq_write(struct file *file,
798 const char __user *buffer,
799 size_t count, loff_t *off)
800 {
801 struct seq_file *seq = file->private_data;
802 struct super_block *sb = seq->private;
803 struct ll_sb_info *sbi = ll_s2sbi(sb);
804 int val, rc;
805
806 rc = lprocfs_write_helper(buffer, count, &val);
807 if (rc)
808 return rc;
809
810 if (val != 0 && val != 1)
811 return -ERANGE;
812
813 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
814 return -ENOTSUPP;
815
816 sbi->ll_xattr_cache_enabled = val;
817
818 return count;
819 }
820 LPROC_SEQ_FOPS(ll_xattr_cache);
821
822 static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
823 { "uuid", &ll_sb_uuid_fops, NULL, 0 },
824 /* { "mntpt_path", ll_rd_path, 0, 0 }, */
825 { "fstype", &ll_fstype_fops, NULL, 0 },
826 { "site", &ll_site_stats_fops, NULL, 0 },
827 { "blocksize", &ll_blksize_fops, NULL, 0 },
828 { "kbytestotal", &ll_kbytestotal_fops, NULL, 0 },
829 { "kbytesfree", &ll_kbytesfree_fops, NULL, 0 },
830 { "kbytesavail", &ll_kbytesavail_fops, NULL, 0 },
831 { "filestotal", &ll_filestotal_fops, NULL, 0 },
832 { "filesfree", &ll_filesfree_fops, NULL, 0 },
833 { "client_type", &ll_client_type_fops, NULL, 0 },
834 /* { "filegroups", lprocfs_rd_filegroups, 0, 0 }, */
835 { "max_read_ahead_mb", &ll_max_readahead_mb_fops, NULL },
836 { "max_read_ahead_per_file_mb", &ll_max_readahead_per_file_mb_fops,
837 NULL },
838 { "max_read_ahead_whole_mb", &ll_max_read_ahead_whole_mb_fops, NULL },
839 { "max_cached_mb", &ll_max_cached_mb_fops, NULL },
840 { "checksum_pages", &ll_checksum_fops, NULL },
841 { "max_rw_chunk", &ll_max_rw_chunk_fops, NULL },
842 { "stats_track_pid", &ll_track_pid_fops, NULL },
843 { "stats_track_ppid", &ll_track_ppid_fops, NULL },
844 { "stats_track_gid", &ll_track_gid_fops, NULL },
845 { "statahead_max", &ll_statahead_max_fops, NULL },
846 { "statahead_agl", &ll_statahead_agl_fops, NULL },
847 { "statahead_stats", &ll_statahead_stats_fops, NULL, 0 },
848 { "lazystatfs", &ll_lazystatfs_fops, NULL },
849 { "max_easize", &ll_max_easize_fops, NULL, 0 },
850 { "default_easize", &ll_defult_easize_fops, NULL, 0 },
851 { "max_cookiesize", &ll_max_cookiesize_fops, NULL, 0 },
852 { "default_cookiesize", &ll_defult_cookiesize_fops, NULL, 0 },
853 { "sbi_flags", &ll_sbi_flags_fops, NULL, 0 },
854 { "xattr_cache", &ll_xattr_cache_fops, NULL, 0 },
855 { NULL }
856 };
857
858 #define MAX_STRING_SIZE 128
859
860 static const struct llite_file_opcode {
861 __u32 opcode;
862 __u32 type;
863 const char *opname;
864 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
865 /* file operation */
866 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
867 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
868 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
869 "read_bytes" },
870 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
871 "write_bytes" },
872 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
873 "brw_read" },
874 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
875 "brw_write" },
876 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
877 "osc_read" },
878 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
879 "osc_write" },
880 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
881 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
882 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
883 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
884 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
885 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
886 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
887 /* inode operation */
888 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
889 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
890 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
891 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
892 /* dir inode operation */
893 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
894 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
895 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
896 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
897 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
898 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
899 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
900 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
901 /* special inode operation */
902 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
903 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
904 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
905 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
906 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
907 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
908 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
909 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
910 };
911
912 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
913 {
914 if (!sbi->ll_stats)
915 return;
916 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
917 lprocfs_counter_add(sbi->ll_stats, op, count);
918 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
919 sbi->ll_stats_track_id == current->pid)
920 lprocfs_counter_add(sbi->ll_stats, op, count);
921 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
922 sbi->ll_stats_track_id == current->real_parent->pid)
923 lprocfs_counter_add(sbi->ll_stats, op, count);
924 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
925 sbi->ll_stats_track_id ==
926 from_kgid(&init_user_ns, current_gid()))
927 lprocfs_counter_add(sbi->ll_stats, op, count);
928 }
929 EXPORT_SYMBOL(ll_stats_ops_tally);
930
931 static const char *ra_stat_string[] = {
932 [RA_STAT_HIT] = "hits",
933 [RA_STAT_MISS] = "misses",
934 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
935 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
936 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
937 [RA_STAT_FAILED_MATCH] = "failed lock match",
938 [RA_STAT_DISCARDED] = "read but discarded",
939 [RA_STAT_ZERO_LEN] = "zero length file",
940 [RA_STAT_ZERO_WINDOW] = "zero size window",
941 [RA_STAT_EOF] = "read-ahead to EOF",
942 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
943 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
944 };
945
946 LPROC_SEQ_FOPS_RO_TYPE(llite, name);
947 LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
948
949 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
950 struct super_block *sb, char *osc, char *mdc)
951 {
952 struct lprocfs_vars lvars[2];
953 struct lustre_sb_info *lsi = s2lsi(sb);
954 struct ll_sb_info *sbi = ll_s2sbi(sb);
955 struct obd_device *obd;
956 struct proc_dir_entry *dir;
957 char name[MAX_STRING_SIZE + 1], *ptr;
958 int err, id, len, rc;
959
960 memset(lvars, 0, sizeof(lvars));
961
962 name[MAX_STRING_SIZE] = '\0';
963 lvars[0].name = name;
964
965 LASSERT(sbi != NULL);
966 LASSERT(mdc != NULL);
967 LASSERT(osc != NULL);
968
969 /* Get fsname */
970 len = strlen(lsi->lsi_lmd->lmd_profile);
971 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
972 if (ptr && (strcmp(ptr, "-client") == 0))
973 len -= 7;
974
975 /* Mount info */
976 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
977 lsi->lsi_lmd->lmd_profile, sb);
978
979 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
980 if (IS_ERR(sbi->ll_proc_root)) {
981 err = PTR_ERR(sbi->ll_proc_root);
982 sbi->ll_proc_root = NULL;
983 return err;
984 }
985
986 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
987 &vvp_dump_pgcache_file_ops, sbi);
988 if (rc)
989 CWARN("Error adding the dump_page_cache file\n");
990
991 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
992 &ll_rw_extents_stats_fops, sbi);
993 if (rc)
994 CWARN("Error adding the extent_stats file\n");
995
996 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
997 0644, &ll_rw_extents_stats_pp_fops, sbi);
998 if (rc)
999 CWARN("Error adding the extents_stats_per_process file\n");
1000
1001 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
1002 &ll_rw_offset_stats_fops, sbi);
1003 if (rc)
1004 CWARN("Error adding the offset_stats file\n");
1005
1006 /* File operations stats */
1007 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1008 LPROCFS_STATS_FLAG_NONE);
1009 if (sbi->ll_stats == NULL) {
1010 err = -ENOMEM;
1011 goto out;
1012 }
1013 /* do counter init */
1014 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1015 __u32 type = llite_opcode_table[id].type;
1016 void *ptr = NULL;
1017 if (type & LPROCFS_TYPE_REGS)
1018 ptr = "regs";
1019 else if (type & LPROCFS_TYPE_BYTES)
1020 ptr = "bytes";
1021 else if (type & LPROCFS_TYPE_PAGES)
1022 ptr = "pages";
1023 lprocfs_counter_init(sbi->ll_stats,
1024 llite_opcode_table[id].opcode,
1025 (type & LPROCFS_CNTR_AVGMINMAX),
1026 llite_opcode_table[id].opname, ptr);
1027 }
1028 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
1029 if (err)
1030 goto out;
1031
1032 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1033 LPROCFS_STATS_FLAG_NONE);
1034 if (sbi->ll_ra_stats == NULL) {
1035 err = -ENOMEM;
1036 goto out;
1037 }
1038
1039 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1040 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1041 ra_stat_string[id], "pages");
1042 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
1043 sbi->ll_ra_stats);
1044 if (err)
1045 goto out;
1046
1047
1048 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1049 if (err)
1050 goto out;
1051
1052 /* MDC info */
1053 obd = class_name2obd(mdc);
1054
1055 LASSERT(obd != NULL);
1056 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1057 LASSERT(obd->obd_type->typ_name != NULL);
1058
1059 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1060 if (dir == NULL) {
1061 err = -ENOMEM;
1062 goto out;
1063 }
1064
1065 snprintf(name, MAX_STRING_SIZE, "common_name");
1066 lvars[0].fops = &llite_name_fops;
1067 err = lprocfs_add_vars(dir, lvars, obd);
1068 if (err)
1069 goto out;
1070
1071 snprintf(name, MAX_STRING_SIZE, "uuid");
1072 lvars[0].fops = &llite_uuid_fops;
1073 err = lprocfs_add_vars(dir, lvars, obd);
1074 if (err)
1075 goto out;
1076
1077 /* OSC */
1078 obd = class_name2obd(osc);
1079
1080 LASSERT(obd != NULL);
1081 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1082 LASSERT(obd->obd_type->typ_name != NULL);
1083
1084 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1085 if (dir == NULL) {
1086 err = -ENOMEM;
1087 goto out;
1088 }
1089
1090 snprintf(name, MAX_STRING_SIZE, "common_name");
1091 lvars[0].fops = &llite_name_fops;
1092 err = lprocfs_add_vars(dir, lvars, obd);
1093 if (err)
1094 goto out;
1095
1096 snprintf(name, MAX_STRING_SIZE, "uuid");
1097 lvars[0].fops = &llite_uuid_fops;
1098 err = lprocfs_add_vars(dir, lvars, obd);
1099 out:
1100 if (err) {
1101 lprocfs_remove(&sbi->ll_proc_root);
1102 lprocfs_free_stats(&sbi->ll_ra_stats);
1103 lprocfs_free_stats(&sbi->ll_stats);
1104 }
1105 return err;
1106 }
1107
1108 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1109 {
1110 if (sbi->ll_proc_root) {
1111 lprocfs_remove(&sbi->ll_proc_root);
1112 lprocfs_free_stats(&sbi->ll_ra_stats);
1113 lprocfs_free_stats(&sbi->ll_stats);
1114 }
1115 }
1116 #undef MAX_STRING_SIZE
1117
1118 #define pct(a, b) (b ? a * 100 / b : 0)
1119
1120 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1121 struct seq_file *seq, int which)
1122 {
1123 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1124 unsigned long start, end, r, w;
1125 char *unitp = "KMGTPEZY";
1126 int i, units = 10;
1127 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1128
1129 read_cum = 0;
1130 write_cum = 0;
1131 start = 0;
1132
1133 for (i = 0; i < LL_HIST_MAX; i++) {
1134 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1135 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1136 }
1137
1138 for (i = 0; i < LL_HIST_MAX; i++) {
1139 r = pp_info->pp_r_hist.oh_buckets[i];
1140 w = pp_info->pp_w_hist.oh_buckets[i];
1141 read_cum += r;
1142 write_cum += w;
1143 end = 1 << (i + LL_HIST_START - units);
1144 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | %14lu %4lu %4lu\n",
1145 start, *unitp, end, *unitp,
1146 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1147 r, pct(r, read_tot), pct(read_cum, read_tot),
1148 w, pct(w, write_tot), pct(write_cum, write_tot));
1149 start = end;
1150 if (start == 1<<10) {
1151 start = 1;
1152 units += 10;
1153 unitp++;
1154 }
1155 if (read_cum == read_tot && write_cum == write_tot)
1156 break;
1157 }
1158 }
1159
1160 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1161 {
1162 struct timeval now;
1163 struct ll_sb_info *sbi = seq->private;
1164 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1165 int k;
1166
1167 do_gettimeofday(&now);
1168
1169 if (!sbi->ll_rw_stats_on) {
1170 seq_printf(seq, "disabled\n"
1171 "write anything in this file to activate, then 0 or \"[D/d]isabled\" to deactivate\n");
1172 return 0;
1173 }
1174 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1175 now.tv_sec, (unsigned long)now.tv_usec);
1176 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1177 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1178 "extents", "calls", "%", "cum%",
1179 "calls", "%", "cum%");
1180 spin_lock(&sbi->ll_pp_extent_lock);
1181 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1182 if (io_extents->pp_extents[k].pid != 0) {
1183 seq_printf(seq, "\nPID: %d\n",
1184 io_extents->pp_extents[k].pid);
1185 ll_display_extents_info(io_extents, seq, k);
1186 }
1187 }
1188 spin_unlock(&sbi->ll_pp_extent_lock);
1189 return 0;
1190 }
1191
1192 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1193 const char __user *buf,
1194 size_t len,
1195 loff_t *off)
1196 {
1197 struct seq_file *seq = file->private_data;
1198 struct ll_sb_info *sbi = seq->private;
1199 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1200 int i;
1201 int value = 1, rc = 0;
1202
1203 if (len == 0)
1204 return -EINVAL;
1205
1206 rc = lprocfs_write_helper(buf, len, &value);
1207 if (rc < 0 && len < 16) {
1208 char kernbuf[16];
1209
1210 if (copy_from_user(kernbuf, buf, len))
1211 return -EFAULT;
1212 kernbuf[len] = 0;
1213
1214 if (kernbuf[len - 1] == '\n')
1215 kernbuf[len - 1] = 0;
1216
1217 if (strcmp(kernbuf, "disabled") == 0 ||
1218 strcmp(kernbuf, "Disabled") == 0)
1219 value = 0;
1220 }
1221
1222 if (value == 0)
1223 sbi->ll_rw_stats_on = 0;
1224 else
1225 sbi->ll_rw_stats_on = 1;
1226
1227 spin_lock(&sbi->ll_pp_extent_lock);
1228 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1229 io_extents->pp_extents[i].pid = 0;
1230 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1231 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1232 }
1233 spin_unlock(&sbi->ll_pp_extent_lock);
1234 return len;
1235 }
1236
1237 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1238
1239 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1240 {
1241 struct timeval now;
1242 struct ll_sb_info *sbi = seq->private;
1243 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1244
1245 do_gettimeofday(&now);
1246
1247 if (!sbi->ll_rw_stats_on) {
1248 seq_printf(seq, "disabled\n"
1249 "write anything in this file to activate, then 0 or \"[D/d]isabled\" to deactivate\n");
1250 return 0;
1251 }
1252 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1253 now.tv_sec, (unsigned long)now.tv_usec);
1254
1255 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1256 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1257 "extents", "calls", "%", "cum%",
1258 "calls", "%", "cum%");
1259 spin_lock(&sbi->ll_lock);
1260 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1261 spin_unlock(&sbi->ll_lock);
1262
1263 return 0;
1264 }
1265
1266 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1267 const char __user *buf,
1268 size_t len, loff_t *off)
1269 {
1270 struct seq_file *seq = file->private_data;
1271 struct ll_sb_info *sbi = seq->private;
1272 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1273 int i;
1274 int value = 1, rc = 0;
1275
1276 if (len == 0)
1277 return -EINVAL;
1278
1279 rc = lprocfs_write_helper(buf, len, &value);
1280 if (rc < 0 && len < 16) {
1281 char kernbuf[16];
1282
1283 if (copy_from_user(kernbuf, buf, len))
1284 return -EFAULT;
1285 kernbuf[len] = 0;
1286
1287 if (kernbuf[len - 1] == '\n')
1288 kernbuf[len - 1] = 0;
1289
1290 if (strcmp(kernbuf, "disabled") == 0 ||
1291 strcmp(kernbuf, "Disabled") == 0)
1292 value = 0;
1293 }
1294
1295 if (value == 0)
1296 sbi->ll_rw_stats_on = 0;
1297 else
1298 sbi->ll_rw_stats_on = 1;
1299
1300 spin_lock(&sbi->ll_pp_extent_lock);
1301 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1302 io_extents->pp_extents[i].pid = 0;
1303 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1304 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1305 }
1306 spin_unlock(&sbi->ll_pp_extent_lock);
1307
1308 return len;
1309 }
1310 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1311
1312 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1313 struct ll_file_data *file, loff_t pos,
1314 size_t count, int rw)
1315 {
1316 int i, cur = -1;
1317 struct ll_rw_process_info *process;
1318 struct ll_rw_process_info *offset;
1319 int *off_count = &sbi->ll_rw_offset_entry_count;
1320 int *process_count = &sbi->ll_offset_process_count;
1321 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1322
1323 if (!sbi->ll_rw_stats_on)
1324 return;
1325 process = sbi->ll_rw_process_info;
1326 offset = sbi->ll_rw_offset_info;
1327
1328 spin_lock(&sbi->ll_pp_extent_lock);
1329 /* Extent statistics */
1330 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1331 if (io_extents->pp_extents[i].pid == pid) {
1332 cur = i;
1333 break;
1334 }
1335 }
1336
1337 if (cur == -1) {
1338 /* new process */
1339 sbi->ll_extent_process_count =
1340 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1341 cur = sbi->ll_extent_process_count;
1342 io_extents->pp_extents[cur].pid = pid;
1343 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1344 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1345 }
1346
1347 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1348 (i < (LL_HIST_MAX - 1)); i++);
1349 if (rw == 0) {
1350 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1351 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1352 } else {
1353 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1354 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1355 }
1356 spin_unlock(&sbi->ll_pp_extent_lock);
1357
1358 spin_lock(&sbi->ll_process_lock);
1359 /* Offset statistics */
1360 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1361 if (process[i].rw_pid == pid) {
1362 if (process[i].rw_last_file != file) {
1363 process[i].rw_range_start = pos;
1364 process[i].rw_last_file_pos = pos + count;
1365 process[i].rw_smallest_extent = count;
1366 process[i].rw_largest_extent = count;
1367 process[i].rw_offset = 0;
1368 process[i].rw_last_file = file;
1369 spin_unlock(&sbi->ll_process_lock);
1370 return;
1371 }
1372 if (process[i].rw_last_file_pos != pos) {
1373 *off_count =
1374 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1375 offset[*off_count].rw_op = process[i].rw_op;
1376 offset[*off_count].rw_pid = pid;
1377 offset[*off_count].rw_range_start =
1378 process[i].rw_range_start;
1379 offset[*off_count].rw_range_end =
1380 process[i].rw_last_file_pos;
1381 offset[*off_count].rw_smallest_extent =
1382 process[i].rw_smallest_extent;
1383 offset[*off_count].rw_largest_extent =
1384 process[i].rw_largest_extent;
1385 offset[*off_count].rw_offset =
1386 process[i].rw_offset;
1387 process[i].rw_op = rw;
1388 process[i].rw_range_start = pos;
1389 process[i].rw_smallest_extent = count;
1390 process[i].rw_largest_extent = count;
1391 process[i].rw_offset = pos -
1392 process[i].rw_last_file_pos;
1393 }
1394 if (process[i].rw_smallest_extent > count)
1395 process[i].rw_smallest_extent = count;
1396 if (process[i].rw_largest_extent < count)
1397 process[i].rw_largest_extent = count;
1398 process[i].rw_last_file_pos = pos + count;
1399 spin_unlock(&sbi->ll_process_lock);
1400 return;
1401 }
1402 }
1403 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1404 process[*process_count].rw_pid = pid;
1405 process[*process_count].rw_op = rw;
1406 process[*process_count].rw_range_start = pos;
1407 process[*process_count].rw_last_file_pos = pos + count;
1408 process[*process_count].rw_smallest_extent = count;
1409 process[*process_count].rw_largest_extent = count;
1410 process[*process_count].rw_offset = 0;
1411 process[*process_count].rw_last_file = file;
1412 spin_unlock(&sbi->ll_process_lock);
1413 }
1414
1415 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1416 {
1417 struct timeval now;
1418 struct ll_sb_info *sbi = seq->private;
1419 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1420 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1421 int i;
1422
1423 do_gettimeofday(&now);
1424
1425 if (!sbi->ll_rw_stats_on) {
1426 seq_printf(seq, "disabled\n"
1427 "write anything in this file to activate, then 0 or \"[D/d]isabled\" to deactivate\n");
1428 return 0;
1429 }
1430 spin_lock(&sbi->ll_process_lock);
1431
1432 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1433 now.tv_sec, (unsigned long)now.tv_usec);
1434 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1435 "R/W", "PID", "RANGE START", "RANGE END",
1436 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1437 /* We stored the discontiguous offsets here; print them first */
1438 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1439 if (offset[i].rw_pid != 0)
1440 seq_printf(seq,
1441 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1442 offset[i].rw_op == READ ? 'R' : 'W',
1443 offset[i].rw_pid,
1444 offset[i].rw_range_start,
1445 offset[i].rw_range_end,
1446 (unsigned long)offset[i].rw_smallest_extent,
1447 (unsigned long)offset[i].rw_largest_extent,
1448 offset[i].rw_offset);
1449 }
1450 /* Then print the current offsets for each process */
1451 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1452 if (process[i].rw_pid != 0)
1453 seq_printf(seq,
1454 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1455 process[i].rw_op == READ ? 'R' : 'W',
1456 process[i].rw_pid,
1457 process[i].rw_range_start,
1458 process[i].rw_last_file_pos,
1459 (unsigned long)process[i].rw_smallest_extent,
1460 (unsigned long)process[i].rw_largest_extent,
1461 process[i].rw_offset);
1462 }
1463 spin_unlock(&sbi->ll_process_lock);
1464
1465 return 0;
1466 }
1467
1468 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
1469 const char __user *buf,
1470 size_t len, loff_t *off)
1471 {
1472 struct seq_file *seq = file->private_data;
1473 struct ll_sb_info *sbi = seq->private;
1474 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1475 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1476 int value = 1, rc = 0;
1477
1478 if (len == 0)
1479 return -EINVAL;
1480
1481 rc = lprocfs_write_helper(buf, len, &value);
1482
1483 if (rc < 0 && len < 16) {
1484 char kernbuf[16];
1485
1486 if (copy_from_user(kernbuf, buf, len))
1487 return -EFAULT;
1488 kernbuf[len] = 0;
1489
1490 if (kernbuf[len - 1] == '\n')
1491 kernbuf[len - 1] = 0;
1492
1493 if (strcmp(kernbuf, "disabled") == 0 ||
1494 strcmp(kernbuf, "Disabled") == 0)
1495 value = 0;
1496 }
1497
1498 if (value == 0)
1499 sbi->ll_rw_stats_on = 0;
1500 else
1501 sbi->ll_rw_stats_on = 1;
1502
1503 spin_lock(&sbi->ll_process_lock);
1504 sbi->ll_offset_process_count = 0;
1505 sbi->ll_rw_offset_entry_count = 0;
1506 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1507 LL_PROCESS_HIST_MAX);
1508 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1509 LL_OFFSET_HIST_MAX);
1510 spin_unlock(&sbi->ll_process_lock);
1511
1512 return len;
1513 }
1514
1515 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1516
1517 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
1518 {
1519 lvars->module_vars = NULL;
1520 lvars->obd_vars = lprocfs_llite_obd_vars;
1521 }
Linux kernel - Deliverables
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