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staging: lustre: Convert "return seq_printf(...)" uses
[mirror_ubuntu-bionic-kernel.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 seq_printf(m, "%s\n", sb->s_type->name);
191 return 0;
192 }
193 LPROC_SEQ_FOPS_RO(ll_fstype);
194
195 static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
196 {
197 struct super_block *sb = (struct super_block *)m->private;
198
199 LASSERT(sb != NULL);
200 seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
201 return 0;
202 }
203 LPROC_SEQ_FOPS_RO(ll_sb_uuid);
204
205 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
206 {
207 struct super_block *sb = m->private;
208
209 /*
210 * See description of statistical counters in struct cl_site, and
211 * struct lu_site.
212 */
213 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
214 }
215 LPROC_SEQ_FOPS_RO(ll_site_stats);
216
217 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
218 {
219 struct super_block *sb = m->private;
220 struct ll_sb_info *sbi = ll_s2sbi(sb);
221 long pages_number;
222 int mult;
223
224 spin_lock(&sbi->ll_lock);
225 pages_number = sbi->ll_ra_info.ra_max_pages;
226 spin_unlock(&sbi->ll_lock);
227
228 mult = 1 << (20 - PAGE_CACHE_SHIFT);
229 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
230 }
231
232 static ssize_t ll_max_readahead_mb_seq_write(struct file *file,
233 const char __user *buffer,
234 size_t count, loff_t *off)
235 {
236 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
237 struct ll_sb_info *sbi = ll_s2sbi(sb);
238 int mult, rc, pages_number;
239
240 mult = 1 << (20 - PAGE_CACHE_SHIFT);
241 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
242 if (rc)
243 return rc;
244
245 if (pages_number < 0 || pages_number > totalram_pages / 2) {
246 CERROR("can't set file readahead more than %lu MB\n",
247 totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1)); /*1/2 of RAM*/
248 return -ERANGE;
249 }
250
251 spin_lock(&sbi->ll_lock);
252 sbi->ll_ra_info.ra_max_pages = pages_number;
253 spin_unlock(&sbi->ll_lock);
254
255 return count;
256 }
257 LPROC_SEQ_FOPS(ll_max_readahead_mb);
258
259 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
260 {
261 struct super_block *sb = m->private;
262 struct ll_sb_info *sbi = ll_s2sbi(sb);
263 long pages_number;
264 int mult;
265
266 spin_lock(&sbi->ll_lock);
267 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
268 spin_unlock(&sbi->ll_lock);
269
270 mult = 1 << (20 - PAGE_CACHE_SHIFT);
271 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
272 }
273
274 static ssize_t ll_max_readahead_per_file_mb_seq_write(struct file *file,
275 const char __user *buffer,
276 size_t count, loff_t *off)
277 {
278 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
279 struct ll_sb_info *sbi = ll_s2sbi(sb);
280 int mult, rc, pages_number;
281
282 mult = 1 << (20 - PAGE_CACHE_SHIFT);
283 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
284 if (rc)
285 return rc;
286
287 if (pages_number < 0 ||
288 pages_number > sbi->ll_ra_info.ra_max_pages) {
289 CERROR("can't set file readahead more than max_read_ahead_mb %lu MB\n",
290 sbi->ll_ra_info.ra_max_pages);
291 return -ERANGE;
292 }
293
294 spin_lock(&sbi->ll_lock);
295 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
296 spin_unlock(&sbi->ll_lock);
297
298 return count;
299 }
300 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
301
302 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *unused)
303 {
304 struct super_block *sb = m->private;
305 struct ll_sb_info *sbi = ll_s2sbi(sb);
306 long pages_number;
307 int mult;
308
309 spin_lock(&sbi->ll_lock);
310 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
311 spin_unlock(&sbi->ll_lock);
312
313 mult = 1 << (20 - PAGE_CACHE_SHIFT);
314 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
315 }
316
317 static ssize_t ll_max_read_ahead_whole_mb_seq_write(struct file *file,
318 const char __user *buffer,
319 size_t count, loff_t *off)
320 {
321 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
322 struct ll_sb_info *sbi = ll_s2sbi(sb);
323 int mult, rc, pages_number;
324
325 mult = 1 << (20 - PAGE_CACHE_SHIFT);
326 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
327 if (rc)
328 return rc;
329
330 /* Cap this at the current max readahead window size, the readahead
331 * algorithm does this anyway so it's pointless to set it larger. */
332 if (pages_number < 0 ||
333 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
334 CERROR("can't set max_read_ahead_whole_mb more than max_read_ahead_per_file_mb: %lu\n",
335 sbi->ll_ra_info.ra_max_pages_per_file >> (20 - PAGE_CACHE_SHIFT));
336 return -ERANGE;
337 }
338
339 spin_lock(&sbi->ll_lock);
340 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
341 spin_unlock(&sbi->ll_lock);
342
343 return count;
344 }
345 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
346
347 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
348 {
349 struct super_block *sb = m->private;
350 struct ll_sb_info *sbi = ll_s2sbi(sb);
351 struct cl_client_cache *cache = &sbi->ll_cache;
352 int shift = 20 - PAGE_CACHE_SHIFT;
353 int max_cached_mb;
354 int unused_mb;
355
356 max_cached_mb = cache->ccc_lru_max >> shift;
357 unused_mb = atomic_read(&cache->ccc_lru_left) >> shift;
358 seq_printf(m,
359 "users: %d\n"
360 "max_cached_mb: %d\n"
361 "used_mb: %d\n"
362 "unused_mb: %d\n"
363 "reclaim_count: %u\n",
364 atomic_read(&cache->ccc_users),
365 max_cached_mb,
366 max_cached_mb - unused_mb,
367 unused_mb,
368 cache->ccc_lru_shrinkers);
369 return 0;
370 }
371
372 static ssize_t ll_max_cached_mb_seq_write(struct file *file,
373 const char __user *buffer,
374 size_t count, loff_t *off)
375 {
376 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
377 struct ll_sb_info *sbi = ll_s2sbi(sb);
378 struct cl_client_cache *cache = &sbi->ll_cache;
379 int mult, rc, pages_number;
380 int diff = 0;
381 int nrpages = 0;
382 char kernbuf[128];
383
384 if (count >= sizeof(kernbuf))
385 return -EINVAL;
386
387 if (copy_from_user(kernbuf, buffer, count))
388 return -EFAULT;
389 kernbuf[count] = 0;
390
391 mult = 1 << (20 - PAGE_CACHE_SHIFT);
392 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
393 kernbuf;
394 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
395 if (rc)
396 return rc;
397
398 if (pages_number < 0 || pages_number > totalram_pages) {
399 CERROR("%s: can't set max cache more than %lu MB\n",
400 ll_get_fsname(sb, NULL, 0),
401 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
402 return -ERANGE;
403 }
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 if (sbi->ll_dt_exp == NULL) { /* being initialized */
441 rc = -ENODEV;
442 break;
443 }
444
445 /* difficult - have to ask OSCs to drop LRU slots. */
446 tmp = diff << 1;
447 rc = obd_set_info_async(NULL, sbi->ll_dt_exp,
448 sizeof(KEY_CACHE_LRU_SHRINK),
449 KEY_CACHE_LRU_SHRINK,
450 sizeof(tmp), &tmp, NULL);
451 if (rc < 0)
452 break;
453 }
454
455 out:
456 if (rc >= 0) {
457 spin_lock(&sbi->ll_lock);
458 cache->ccc_lru_max = pages_number;
459 spin_unlock(&sbi->ll_lock);
460 rc = count;
461 } else {
462 atomic_add(nrpages, &cache->ccc_lru_left);
463 }
464 return rc;
465 }
466 LPROC_SEQ_FOPS(ll_max_cached_mb);
467
468 static int ll_checksum_seq_show(struct seq_file *m, void *v)
469 {
470 struct super_block *sb = m->private;
471 struct ll_sb_info *sbi = ll_s2sbi(sb);
472
473 seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
474 return 0;
475 }
476
477 static ssize_t ll_checksum_seq_write(struct file *file,
478 const char __user *buffer,
479 size_t count, loff_t *off)
480 {
481 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
482 struct ll_sb_info *sbi = ll_s2sbi(sb);
483 int val, rc;
484
485 if (!sbi->ll_dt_exp)
486 /* Not set up yet */
487 return -EAGAIN;
488
489 rc = lprocfs_write_helper(buffer, count, &val);
490 if (rc)
491 return rc;
492 if (val)
493 sbi->ll_flags |= LL_SBI_CHECKSUM;
494 else
495 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
496
497 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
498 KEY_CHECKSUM, sizeof(val), &val, NULL);
499 if (rc)
500 CWARN("Failed to set OSC checksum flags: %d\n", rc);
501
502 return count;
503 }
504 LPROC_SEQ_FOPS(ll_checksum);
505
506 static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
507 {
508 struct super_block *sb = m->private;
509
510 seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
511 return 0;
512 }
513
514 static ssize_t ll_max_rw_chunk_seq_write(struct file *file,
515 const char __user *buffer,
516 size_t count, loff_t *off)
517 {
518 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
519 int rc, val;
520
521 rc = lprocfs_write_helper(buffer, count, &val);
522 if (rc)
523 return rc;
524 ll_s2sbi(sb)->ll_max_rw_chunk = val;
525 return count;
526 }
527 LPROC_SEQ_FOPS(ll_max_rw_chunk);
528
529 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
530 {
531 struct super_block *sb = m->private;
532
533 if (ll_s2sbi(sb)->ll_stats_track_type == type)
534 seq_printf(m, "%d\n", ll_s2sbi(sb)->ll_stats_track_id);
535 else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL)
536 seq_puts(m, "0 (all)\n");
537 else
538 seq_puts(m, "untracked\n");
539
540 return 0;
541 }
542
543 static int ll_wr_track_id(const char __user *buffer, unsigned long count,
544 void *data, enum stats_track_type type)
545 {
546 struct super_block *sb = data;
547 int rc, pid;
548
549 rc = lprocfs_write_helper(buffer, count, &pid);
550 if (rc)
551 return rc;
552 ll_s2sbi(sb)->ll_stats_track_id = pid;
553 if (pid == 0)
554 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
555 else
556 ll_s2sbi(sb)->ll_stats_track_type = type;
557 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
558 return count;
559 }
560
561 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
562 {
563 return ll_rd_track_id(m, STATS_TRACK_PID);
564 }
565
566 static ssize_t ll_track_pid_seq_write(struct file *file,
567 const char __user *buffer,
568 size_t count, loff_t *off)
569 {
570 struct seq_file *seq = file->private_data;
571 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
572 }
573 LPROC_SEQ_FOPS(ll_track_pid);
574
575 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
576 {
577 return ll_rd_track_id(m, STATS_TRACK_PPID);
578 }
579
580 static ssize_t ll_track_ppid_seq_write(struct file *file,
581 const char __user *buffer,
582 size_t count, loff_t *off)
583 {
584 struct seq_file *seq = file->private_data;
585 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
586 }
587 LPROC_SEQ_FOPS(ll_track_ppid);
588
589 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
590 {
591 return ll_rd_track_id(m, STATS_TRACK_GID);
592 }
593
594 static ssize_t ll_track_gid_seq_write(struct file *file,
595 const char __user *buffer,
596 size_t count, loff_t *off)
597 {
598 struct seq_file *seq = file->private_data;
599 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
600 }
601 LPROC_SEQ_FOPS(ll_track_gid);
602
603 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
604 {
605 struct super_block *sb = m->private;
606 struct ll_sb_info *sbi = ll_s2sbi(sb);
607
608 seq_printf(m, "%u\n", sbi->ll_sa_max);
609 return 0;
610 }
611
612 static ssize_t ll_statahead_max_seq_write(struct file *file,
613 const char __user *buffer,
614 size_t count, loff_t *off)
615 {
616 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
617 struct ll_sb_info *sbi = ll_s2sbi(sb);
618 int val, rc;
619
620 rc = lprocfs_write_helper(buffer, count, &val);
621 if (rc)
622 return rc;
623
624 if (val >= 0 && val <= LL_SA_RPC_MAX)
625 sbi->ll_sa_max = val;
626 else
627 CERROR("Bad statahead_max value %d. Valid values are in the range [0, %d]\n",
628 val, LL_SA_RPC_MAX);
629
630 return count;
631 }
632 LPROC_SEQ_FOPS(ll_statahead_max);
633
634 static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
635 {
636 struct super_block *sb = m->private;
637 struct ll_sb_info *sbi = ll_s2sbi(sb);
638
639 seq_printf(m, "%u\n", sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
640 return 0;
641 }
642
643 static ssize_t ll_statahead_agl_seq_write(struct file *file,
644 const char __user *buffer,
645 size_t count, loff_t *off)
646 {
647 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
648 struct ll_sb_info *sbi = ll_s2sbi(sb);
649 int val, rc;
650
651 rc = lprocfs_write_helper(buffer, count, &val);
652 if (rc)
653 return rc;
654
655 if (val)
656 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
657 else
658 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
659
660 return count;
661 }
662 LPROC_SEQ_FOPS(ll_statahead_agl);
663
664 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
665 {
666 struct super_block *sb = m->private;
667 struct ll_sb_info *sbi = ll_s2sbi(sb);
668
669 seq_printf(m,
670 "statahead total: %u\n"
671 "statahead wrong: %u\n"
672 "agl total: %u\n",
673 atomic_read(&sbi->ll_sa_total),
674 atomic_read(&sbi->ll_sa_wrong),
675 atomic_read(&sbi->ll_agl_total));
676 return 0;
677 }
678 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
679
680 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
681 {
682 struct super_block *sb = m->private;
683 struct ll_sb_info *sbi = ll_s2sbi(sb);
684
685 seq_printf(m, "%u\n", sbi->ll_flags & LL_SBI_LAZYSTATFS ? 1 : 0);
686 return 0;
687 }
688
689 static ssize_t ll_lazystatfs_seq_write(struct file *file,
690 const char __user *buffer,
691 size_t count, loff_t *off)
692 {
693 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
694 struct ll_sb_info *sbi = ll_s2sbi(sb);
695 int val, rc;
696
697 rc = lprocfs_write_helper(buffer, count, &val);
698 if (rc)
699 return rc;
700
701 if (val)
702 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
703 else
704 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
705
706 return count;
707 }
708 LPROC_SEQ_FOPS(ll_lazystatfs);
709
710 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
711 {
712 struct super_block *sb = m->private;
713 struct ll_sb_info *sbi = ll_s2sbi(sb);
714 unsigned int ealen;
715 int rc;
716
717 rc = ll_get_max_mdsize(sbi, &ealen);
718 if (rc)
719 return rc;
720
721 seq_printf(m, "%u\n", ealen);
722 return 0;
723 }
724 LPROC_SEQ_FOPS_RO(ll_max_easize);
725
726 static int ll_defult_easize_seq_show(struct seq_file *m, void *v)
727 {
728 struct super_block *sb = m->private;
729 struct ll_sb_info *sbi = ll_s2sbi(sb);
730 unsigned int ealen;
731 int rc;
732
733 rc = ll_get_default_mdsize(sbi, &ealen);
734 if (rc)
735 return rc;
736
737 seq_printf(m, "%u\n", ealen);
738 return 0;
739 }
740 LPROC_SEQ_FOPS_RO(ll_defult_easize);
741
742 static int ll_max_cookiesize_seq_show(struct seq_file *m, void *v)
743 {
744 struct super_block *sb = m->private;
745 struct ll_sb_info *sbi = ll_s2sbi(sb);
746 unsigned int cookielen;
747 int rc;
748
749 rc = ll_get_max_cookiesize(sbi, &cookielen);
750 if (rc)
751 return rc;
752
753 seq_printf(m, "%u\n", cookielen);
754 return 0;
755 }
756 LPROC_SEQ_FOPS_RO(ll_max_cookiesize);
757
758 static int ll_defult_cookiesize_seq_show(struct seq_file *m, void *v)
759 {
760 struct super_block *sb = m->private;
761 struct ll_sb_info *sbi = ll_s2sbi(sb);
762 unsigned int cookielen;
763 int rc;
764
765 rc = ll_get_default_cookiesize(sbi, &cookielen);
766 if (rc)
767 return rc;
768
769 seq_printf(m, "%u\n", cookielen);
770 return 0;
771 }
772 LPROC_SEQ_FOPS_RO(ll_defult_cookiesize);
773
774 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
775 {
776 const char *str[] = LL_SBI_FLAGS;
777 struct super_block *sb = m->private;
778 int flags = ll_s2sbi(sb)->ll_flags;
779 int i = 0;
780
781 while (flags != 0) {
782 if (ARRAY_SIZE(str) <= i) {
783 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi flags please.\n",
784 ll_get_fsname(sb, NULL, 0));
785 return -EINVAL;
786 }
787
788 if (flags & 0x1)
789 seq_printf(m, "%s ", str[i]);
790 flags >>= 1;
791 ++i;
792 }
793 seq_printf(m, "\b\n");
794 return 0;
795 }
796 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
797
798 static int ll_xattr_cache_seq_show(struct seq_file *m, void *v)
799 {
800 struct super_block *sb = m->private;
801 struct ll_sb_info *sbi = ll_s2sbi(sb);
802
803 return seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
804 }
805
806 static ssize_t ll_xattr_cache_seq_write(struct file *file,
807 const char __user *buffer,
808 size_t count, loff_t *off)
809 {
810 struct seq_file *seq = file->private_data;
811 struct super_block *sb = seq->private;
812 struct ll_sb_info *sbi = ll_s2sbi(sb);
813 int val, rc;
814
815 rc = lprocfs_write_helper(buffer, count, &val);
816 if (rc)
817 return rc;
818
819 if (val != 0 && val != 1)
820 return -ERANGE;
821
822 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
823 return -ENOTSUPP;
824
825 sbi->ll_xattr_cache_enabled = val;
826
827 return count;
828 }
829 LPROC_SEQ_FOPS(ll_xattr_cache);
830
831 static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
832 { "uuid", &ll_sb_uuid_fops, NULL, 0 },
833 /* { "mntpt_path", ll_rd_path, 0, 0 }, */
834 { "fstype", &ll_fstype_fops, NULL, 0 },
835 { "site", &ll_site_stats_fops, NULL, 0 },
836 { "blocksize", &ll_blksize_fops, NULL, 0 },
837 { "kbytestotal", &ll_kbytestotal_fops, NULL, 0 },
838 { "kbytesfree", &ll_kbytesfree_fops, NULL, 0 },
839 { "kbytesavail", &ll_kbytesavail_fops, NULL, 0 },
840 { "filestotal", &ll_filestotal_fops, NULL, 0 },
841 { "filesfree", &ll_filesfree_fops, NULL, 0 },
842 { "client_type", &ll_client_type_fops, NULL, 0 },
843 /* { "filegroups", lprocfs_rd_filegroups, 0, 0 }, */
844 { "max_read_ahead_mb", &ll_max_readahead_mb_fops, NULL },
845 { "max_read_ahead_per_file_mb", &ll_max_readahead_per_file_mb_fops,
846 NULL },
847 { "max_read_ahead_whole_mb", &ll_max_read_ahead_whole_mb_fops, NULL },
848 { "max_cached_mb", &ll_max_cached_mb_fops, NULL },
849 { "checksum_pages", &ll_checksum_fops, NULL },
850 { "max_rw_chunk", &ll_max_rw_chunk_fops, NULL },
851 { "stats_track_pid", &ll_track_pid_fops, NULL },
852 { "stats_track_ppid", &ll_track_ppid_fops, NULL },
853 { "stats_track_gid", &ll_track_gid_fops, NULL },
854 { "statahead_max", &ll_statahead_max_fops, NULL },
855 { "statahead_agl", &ll_statahead_agl_fops, NULL },
856 { "statahead_stats", &ll_statahead_stats_fops, NULL, 0 },
857 { "lazystatfs", &ll_lazystatfs_fops, NULL },
858 { "max_easize", &ll_max_easize_fops, NULL, 0 },
859 { "default_easize", &ll_defult_easize_fops, NULL, 0 },
860 { "max_cookiesize", &ll_max_cookiesize_fops, NULL, 0 },
861 { "default_cookiesize", &ll_defult_cookiesize_fops, NULL, 0 },
862 { "sbi_flags", &ll_sbi_flags_fops, NULL, 0 },
863 { "xattr_cache", &ll_xattr_cache_fops, NULL, 0 },
864 { NULL }
865 };
866
867 #define MAX_STRING_SIZE 128
868
869 static const struct llite_file_opcode {
870 __u32 opcode;
871 __u32 type;
872 const char *opname;
873 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
874 /* file operation */
875 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
876 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
877 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
878 "read_bytes" },
879 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
880 "write_bytes" },
881 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
882 "brw_read" },
883 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
884 "brw_write" },
885 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
886 "osc_read" },
887 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
888 "osc_write" },
889 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
890 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
891 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
892 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
893 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
894 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
895 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
896 /* inode operation */
897 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
898 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
899 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
900 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
901 /* dir inode operation */
902 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
903 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
904 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
905 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
906 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
907 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
908 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
909 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
910 /* special inode operation */
911 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
912 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
913 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
914 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
915 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
916 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
917 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
918 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
919 };
920
921 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
922 {
923 if (!sbi->ll_stats)
924 return;
925 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
926 lprocfs_counter_add(sbi->ll_stats, op, count);
927 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
928 sbi->ll_stats_track_id == current->pid)
929 lprocfs_counter_add(sbi->ll_stats, op, count);
930 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
931 sbi->ll_stats_track_id == current->real_parent->pid)
932 lprocfs_counter_add(sbi->ll_stats, op, count);
933 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
934 sbi->ll_stats_track_id ==
935 from_kgid(&init_user_ns, current_gid()))
936 lprocfs_counter_add(sbi->ll_stats, op, count);
937 }
938 EXPORT_SYMBOL(ll_stats_ops_tally);
939
940 static const char *ra_stat_string[] = {
941 [RA_STAT_HIT] = "hits",
942 [RA_STAT_MISS] = "misses",
943 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
944 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
945 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
946 [RA_STAT_FAILED_MATCH] = "failed lock match",
947 [RA_STAT_DISCARDED] = "read but discarded",
948 [RA_STAT_ZERO_LEN] = "zero length file",
949 [RA_STAT_ZERO_WINDOW] = "zero size window",
950 [RA_STAT_EOF] = "read-ahead to EOF",
951 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
952 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
953 };
954
955 LPROC_SEQ_FOPS_RO_TYPE(llite, name);
956 LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
957
958 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
959 struct super_block *sb, char *osc, char *mdc)
960 {
961 struct lprocfs_vars lvars[2];
962 struct lustre_sb_info *lsi = s2lsi(sb);
963 struct ll_sb_info *sbi = ll_s2sbi(sb);
964 struct obd_device *obd;
965 struct proc_dir_entry *dir;
966 char name[MAX_STRING_SIZE + 1], *ptr;
967 int err, id, len, rc;
968
969 memset(lvars, 0, sizeof(lvars));
970
971 name[MAX_STRING_SIZE] = '\0';
972 lvars[0].name = name;
973
974 LASSERT(sbi != NULL);
975 LASSERT(mdc != NULL);
976 LASSERT(osc != NULL);
977
978 /* Get fsname */
979 len = strlen(lsi->lsi_lmd->lmd_profile);
980 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
981 if (ptr && (strcmp(ptr, "-client") == 0))
982 len -= 7;
983
984 /* Mount info */
985 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
986 lsi->lsi_lmd->lmd_profile, sb);
987
988 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
989 if (IS_ERR(sbi->ll_proc_root)) {
990 err = PTR_ERR(sbi->ll_proc_root);
991 sbi->ll_proc_root = NULL;
992 return err;
993 }
994
995 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
996 &vvp_dump_pgcache_file_ops, sbi);
997 if (rc)
998 CWARN("Error adding the dump_page_cache file\n");
999
1000 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
1001 &ll_rw_extents_stats_fops, sbi);
1002 if (rc)
1003 CWARN("Error adding the extent_stats file\n");
1004
1005 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
1006 0644, &ll_rw_extents_stats_pp_fops, sbi);
1007 if (rc)
1008 CWARN("Error adding the extents_stats_per_process file\n");
1009
1010 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
1011 &ll_rw_offset_stats_fops, sbi);
1012 if (rc)
1013 CWARN("Error adding the offset_stats file\n");
1014
1015 /* File operations stats */
1016 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1017 LPROCFS_STATS_FLAG_NONE);
1018 if (sbi->ll_stats == NULL) {
1019 err = -ENOMEM;
1020 goto out;
1021 }
1022 /* do counter init */
1023 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1024 __u32 type = llite_opcode_table[id].type;
1025 void *ptr = NULL;
1026 if (type & LPROCFS_TYPE_REGS)
1027 ptr = "regs";
1028 else if (type & LPROCFS_TYPE_BYTES)
1029 ptr = "bytes";
1030 else if (type & LPROCFS_TYPE_PAGES)
1031 ptr = "pages";
1032 lprocfs_counter_init(sbi->ll_stats,
1033 llite_opcode_table[id].opcode,
1034 (type & LPROCFS_CNTR_AVGMINMAX),
1035 llite_opcode_table[id].opname, ptr);
1036 }
1037 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
1038 if (err)
1039 goto out;
1040
1041 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1042 LPROCFS_STATS_FLAG_NONE);
1043 if (sbi->ll_ra_stats == NULL) {
1044 err = -ENOMEM;
1045 goto out;
1046 }
1047
1048 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1049 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1050 ra_stat_string[id], "pages");
1051 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
1052 sbi->ll_ra_stats);
1053 if (err)
1054 goto out;
1055
1056
1057 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1058 if (err)
1059 goto out;
1060
1061 /* MDC info */
1062 obd = class_name2obd(mdc);
1063
1064 LASSERT(obd != NULL);
1065 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1066 LASSERT(obd->obd_type->typ_name != NULL);
1067
1068 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1069 if (dir == NULL) {
1070 err = -ENOMEM;
1071 goto out;
1072 }
1073
1074 snprintf(name, MAX_STRING_SIZE, "common_name");
1075 lvars[0].fops = &llite_name_fops;
1076 err = lprocfs_add_vars(dir, lvars, obd);
1077 if (err)
1078 goto out;
1079
1080 snprintf(name, MAX_STRING_SIZE, "uuid");
1081 lvars[0].fops = &llite_uuid_fops;
1082 err = lprocfs_add_vars(dir, lvars, obd);
1083 if (err)
1084 goto out;
1085
1086 /* OSC */
1087 obd = class_name2obd(osc);
1088
1089 LASSERT(obd != NULL);
1090 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1091 LASSERT(obd->obd_type->typ_name != NULL);
1092
1093 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1094 if (dir == NULL) {
1095 err = -ENOMEM;
1096 goto out;
1097 }
1098
1099 snprintf(name, MAX_STRING_SIZE, "common_name");
1100 lvars[0].fops = &llite_name_fops;
1101 err = lprocfs_add_vars(dir, lvars, obd);
1102 if (err)
1103 goto out;
1104
1105 snprintf(name, MAX_STRING_SIZE, "uuid");
1106 lvars[0].fops = &llite_uuid_fops;
1107 err = lprocfs_add_vars(dir, lvars, obd);
1108 out:
1109 if (err) {
1110 lprocfs_remove(&sbi->ll_proc_root);
1111 lprocfs_free_stats(&sbi->ll_ra_stats);
1112 lprocfs_free_stats(&sbi->ll_stats);
1113 }
1114 return err;
1115 }
1116
1117 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1118 {
1119 if (sbi->ll_proc_root) {
1120 lprocfs_remove(&sbi->ll_proc_root);
1121 lprocfs_free_stats(&sbi->ll_ra_stats);
1122 lprocfs_free_stats(&sbi->ll_stats);
1123 }
1124 }
1125 #undef MAX_STRING_SIZE
1126
1127 #define pct(a, b) (b ? a * 100 / b : 0)
1128
1129 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1130 struct seq_file *seq, int which)
1131 {
1132 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1133 unsigned long start, end, r, w;
1134 char *unitp = "KMGTPEZY";
1135 int i, units = 10;
1136 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1137
1138 read_cum = 0;
1139 write_cum = 0;
1140 start = 0;
1141
1142 for (i = 0; i < LL_HIST_MAX; i++) {
1143 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1144 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1145 }
1146
1147 for (i = 0; i < LL_HIST_MAX; i++) {
1148 r = pp_info->pp_r_hist.oh_buckets[i];
1149 w = pp_info->pp_w_hist.oh_buckets[i];
1150 read_cum += r;
1151 write_cum += w;
1152 end = 1 << (i + LL_HIST_START - units);
1153 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | %14lu %4lu %4lu\n",
1154 start, *unitp, end, *unitp,
1155 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1156 r, pct(r, read_tot), pct(read_cum, read_tot),
1157 w, pct(w, write_tot), pct(write_cum, write_tot));
1158 start = end;
1159 if (start == 1<<10) {
1160 start = 1;
1161 units += 10;
1162 unitp++;
1163 }
1164 if (read_cum == read_tot && write_cum == write_tot)
1165 break;
1166 }
1167 }
1168
1169 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1170 {
1171 struct timeval now;
1172 struct ll_sb_info *sbi = seq->private;
1173 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1174 int k;
1175
1176 do_gettimeofday(&now);
1177
1178 if (!sbi->ll_rw_stats_on) {
1179 seq_printf(seq, "disabled\n"
1180 "write anything in this file to activate, then 0 or \"[D/d]isabled\" to deactivate\n");
1181 return 0;
1182 }
1183 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1184 now.tv_sec, (unsigned long)now.tv_usec);
1185 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1186 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1187 "extents", "calls", "%", "cum%",
1188 "calls", "%", "cum%");
1189 spin_lock(&sbi->ll_pp_extent_lock);
1190 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1191 if (io_extents->pp_extents[k].pid != 0) {
1192 seq_printf(seq, "\nPID: %d\n",
1193 io_extents->pp_extents[k].pid);
1194 ll_display_extents_info(io_extents, seq, k);
1195 }
1196 }
1197 spin_unlock(&sbi->ll_pp_extent_lock);
1198 return 0;
1199 }
1200
1201 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1202 const char __user *buf,
1203 size_t len,
1204 loff_t *off)
1205 {
1206 struct seq_file *seq = file->private_data;
1207 struct ll_sb_info *sbi = seq->private;
1208 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1209 int i;
1210 int value = 1, rc = 0;
1211
1212 if (len == 0)
1213 return -EINVAL;
1214
1215 rc = lprocfs_write_helper(buf, len, &value);
1216 if (rc < 0 && len < 16) {
1217 char kernbuf[16];
1218
1219 if (copy_from_user(kernbuf, buf, len))
1220 return -EFAULT;
1221 kernbuf[len] = 0;
1222
1223 if (kernbuf[len - 1] == '\n')
1224 kernbuf[len - 1] = 0;
1225
1226 if (strcmp(kernbuf, "disabled") == 0 ||
1227 strcmp(kernbuf, "Disabled") == 0)
1228 value = 0;
1229 }
1230
1231 if (value == 0)
1232 sbi->ll_rw_stats_on = 0;
1233 else
1234 sbi->ll_rw_stats_on = 1;
1235
1236 spin_lock(&sbi->ll_pp_extent_lock);
1237 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1238 io_extents->pp_extents[i].pid = 0;
1239 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1240 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1241 }
1242 spin_unlock(&sbi->ll_pp_extent_lock);
1243 return len;
1244 }
1245
1246 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1247
1248 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1249 {
1250 struct timeval now;
1251 struct ll_sb_info *sbi = seq->private;
1252 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1253
1254 do_gettimeofday(&now);
1255
1256 if (!sbi->ll_rw_stats_on) {
1257 seq_printf(seq, "disabled\n"
1258 "write anything in this file to activate, then 0 or \"[D/d]isabled\" to deactivate\n");
1259 return 0;
1260 }
1261 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1262 now.tv_sec, (unsigned long)now.tv_usec);
1263
1264 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1265 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1266 "extents", "calls", "%", "cum%",
1267 "calls", "%", "cum%");
1268 spin_lock(&sbi->ll_lock);
1269 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1270 spin_unlock(&sbi->ll_lock);
1271
1272 return 0;
1273 }
1274
1275 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1276 const char __user *buf,
1277 size_t len, loff_t *off)
1278 {
1279 struct seq_file *seq = file->private_data;
1280 struct ll_sb_info *sbi = seq->private;
1281 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1282 int i;
1283 int value = 1, rc = 0;
1284
1285 if (len == 0)
1286 return -EINVAL;
1287
1288 rc = lprocfs_write_helper(buf, len, &value);
1289 if (rc < 0 && len < 16) {
1290 char kernbuf[16];
1291
1292 if (copy_from_user(kernbuf, buf, len))
1293 return -EFAULT;
1294 kernbuf[len] = 0;
1295
1296 if (kernbuf[len - 1] == '\n')
1297 kernbuf[len - 1] = 0;
1298
1299 if (strcmp(kernbuf, "disabled") == 0 ||
1300 strcmp(kernbuf, "Disabled") == 0)
1301 value = 0;
1302 }
1303
1304 if (value == 0)
1305 sbi->ll_rw_stats_on = 0;
1306 else
1307 sbi->ll_rw_stats_on = 1;
1308
1309 spin_lock(&sbi->ll_pp_extent_lock);
1310 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1311 io_extents->pp_extents[i].pid = 0;
1312 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1313 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1314 }
1315 spin_unlock(&sbi->ll_pp_extent_lock);
1316
1317 return len;
1318 }
1319 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1320
1321 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1322 struct ll_file_data *file, loff_t pos,
1323 size_t count, int rw)
1324 {
1325 int i, cur = -1;
1326 struct ll_rw_process_info *process;
1327 struct ll_rw_process_info *offset;
1328 int *off_count = &sbi->ll_rw_offset_entry_count;
1329 int *process_count = &sbi->ll_offset_process_count;
1330 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1331
1332 if (!sbi->ll_rw_stats_on)
1333 return;
1334 process = sbi->ll_rw_process_info;
1335 offset = sbi->ll_rw_offset_info;
1336
1337 spin_lock(&sbi->ll_pp_extent_lock);
1338 /* Extent statistics */
1339 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1340 if (io_extents->pp_extents[i].pid == pid) {
1341 cur = i;
1342 break;
1343 }
1344 }
1345
1346 if (cur == -1) {
1347 /* new process */
1348 sbi->ll_extent_process_count =
1349 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1350 cur = sbi->ll_extent_process_count;
1351 io_extents->pp_extents[cur].pid = pid;
1352 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1353 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1354 }
1355
1356 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1357 (i < (LL_HIST_MAX - 1)); i++);
1358 if (rw == 0) {
1359 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1360 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1361 } else {
1362 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1363 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1364 }
1365 spin_unlock(&sbi->ll_pp_extent_lock);
1366
1367 spin_lock(&sbi->ll_process_lock);
1368 /* Offset statistics */
1369 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1370 if (process[i].rw_pid == pid) {
1371 if (process[i].rw_last_file != file) {
1372 process[i].rw_range_start = pos;
1373 process[i].rw_last_file_pos = pos + count;
1374 process[i].rw_smallest_extent = count;
1375 process[i].rw_largest_extent = count;
1376 process[i].rw_offset = 0;
1377 process[i].rw_last_file = file;
1378 spin_unlock(&sbi->ll_process_lock);
1379 return;
1380 }
1381 if (process[i].rw_last_file_pos != pos) {
1382 *off_count =
1383 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1384 offset[*off_count].rw_op = process[i].rw_op;
1385 offset[*off_count].rw_pid = pid;
1386 offset[*off_count].rw_range_start =
1387 process[i].rw_range_start;
1388 offset[*off_count].rw_range_end =
1389 process[i].rw_last_file_pos;
1390 offset[*off_count].rw_smallest_extent =
1391 process[i].rw_smallest_extent;
1392 offset[*off_count].rw_largest_extent =
1393 process[i].rw_largest_extent;
1394 offset[*off_count].rw_offset =
1395 process[i].rw_offset;
1396 process[i].rw_op = rw;
1397 process[i].rw_range_start = pos;
1398 process[i].rw_smallest_extent = count;
1399 process[i].rw_largest_extent = count;
1400 process[i].rw_offset = pos -
1401 process[i].rw_last_file_pos;
1402 }
1403 if (process[i].rw_smallest_extent > count)
1404 process[i].rw_smallest_extent = count;
1405 if (process[i].rw_largest_extent < count)
1406 process[i].rw_largest_extent = count;
1407 process[i].rw_last_file_pos = pos + count;
1408 spin_unlock(&sbi->ll_process_lock);
1409 return;
1410 }
1411 }
1412 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1413 process[*process_count].rw_pid = pid;
1414 process[*process_count].rw_op = rw;
1415 process[*process_count].rw_range_start = pos;
1416 process[*process_count].rw_last_file_pos = pos + count;
1417 process[*process_count].rw_smallest_extent = count;
1418 process[*process_count].rw_largest_extent = count;
1419 process[*process_count].rw_offset = 0;
1420 process[*process_count].rw_last_file = file;
1421 spin_unlock(&sbi->ll_process_lock);
1422 }
1423
1424 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1425 {
1426 struct timeval now;
1427 struct ll_sb_info *sbi = seq->private;
1428 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1429 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1430 int i;
1431
1432 do_gettimeofday(&now);
1433
1434 if (!sbi->ll_rw_stats_on) {
1435 seq_printf(seq, "disabled\n"
1436 "write anything in this file to activate, then 0 or \"[D/d]isabled\" to deactivate\n");
1437 return 0;
1438 }
1439 spin_lock(&sbi->ll_process_lock);
1440
1441 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1442 now.tv_sec, (unsigned long)now.tv_usec);
1443 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1444 "R/W", "PID", "RANGE START", "RANGE END",
1445 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1446 /* We stored the discontiguous offsets here; print them first */
1447 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1448 if (offset[i].rw_pid != 0)
1449 seq_printf(seq,
1450 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1451 offset[i].rw_op == READ ? 'R' : 'W',
1452 offset[i].rw_pid,
1453 offset[i].rw_range_start,
1454 offset[i].rw_range_end,
1455 (unsigned long)offset[i].rw_smallest_extent,
1456 (unsigned long)offset[i].rw_largest_extent,
1457 offset[i].rw_offset);
1458 }
1459 /* Then print the current offsets for each process */
1460 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1461 if (process[i].rw_pid != 0)
1462 seq_printf(seq,
1463 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1464 process[i].rw_op == READ ? 'R' : 'W',
1465 process[i].rw_pid,
1466 process[i].rw_range_start,
1467 process[i].rw_last_file_pos,
1468 (unsigned long)process[i].rw_smallest_extent,
1469 (unsigned long)process[i].rw_largest_extent,
1470 process[i].rw_offset);
1471 }
1472 spin_unlock(&sbi->ll_process_lock);
1473
1474 return 0;
1475 }
1476
1477 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
1478 const char __user *buf,
1479 size_t len, loff_t *off)
1480 {
1481 struct seq_file *seq = file->private_data;
1482 struct ll_sb_info *sbi = seq->private;
1483 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1484 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1485 int value = 1, rc = 0;
1486
1487 if (len == 0)
1488 return -EINVAL;
1489
1490 rc = lprocfs_write_helper(buf, len, &value);
1491
1492 if (rc < 0 && len < 16) {
1493 char kernbuf[16];
1494
1495 if (copy_from_user(kernbuf, buf, len))
1496 return -EFAULT;
1497 kernbuf[len] = 0;
1498
1499 if (kernbuf[len - 1] == '\n')
1500 kernbuf[len - 1] = 0;
1501
1502 if (strcmp(kernbuf, "disabled") == 0 ||
1503 strcmp(kernbuf, "Disabled") == 0)
1504 value = 0;
1505 }
1506
1507 if (value == 0)
1508 sbi->ll_rw_stats_on = 0;
1509 else
1510 sbi->ll_rw_stats_on = 1;
1511
1512 spin_lock(&sbi->ll_process_lock);
1513 sbi->ll_offset_process_count = 0;
1514 sbi->ll_rw_offset_entry_count = 0;
1515 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1516 LL_PROCESS_HIST_MAX);
1517 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1518 LL_OFFSET_HIST_MAX);
1519 spin_unlock(&sbi->ll_process_lock);
1520
1521 return len;
1522 }
1523
1524 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1525
1526 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
1527 {
1528 lvars->module_vars = NULL;
1529 lvars->obd_vars = lprocfs_llite_obd_vars;
1530 }
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