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
ll_blksize_seq_show(struct seq_file * m,void * v)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 seq_printf(m, "%u\n", osfs.os_bsize);
63
64 return rc;
65 }
66 LPROC_SEQ_FOPS_RO(ll_blksize);
67
ll_kbytestotal_seq_show(struct seq_file * m,void * v)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 seq_printf(m, "%llu\n", result);
86 }
87
88 return rc;
89 }
90 LPROC_SEQ_FOPS_RO(ll_kbytestotal);
91
ll_kbytesfree_seq_show(struct seq_file * m,void * v)92 static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
93 {
94 struct super_block *sb = (struct super_block *)m->private;
95 struct obd_statfs osfs;
96 int rc;
97
98 LASSERT(sb != NULL);
99 rc = ll_statfs_internal(sb, &osfs,
100 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
101 OBD_STATFS_NODELAY);
102 if (!rc) {
103 __u32 blk_size = osfs.os_bsize >> 10;
104 __u64 result = osfs.os_bfree;
105
106 while (blk_size >>= 1)
107 result <<= 1;
108
109 seq_printf(m, "%llu\n", result);
110 }
111
112 return rc;
113 }
114 LPROC_SEQ_FOPS_RO(ll_kbytesfree);
115
ll_kbytesavail_seq_show(struct seq_file * m,void * v)116 static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
117 {
118 struct super_block *sb = (struct super_block *)m->private;
119 struct obd_statfs osfs;
120 int rc;
121
122 LASSERT(sb != NULL);
123 rc = ll_statfs_internal(sb, &osfs,
124 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
125 OBD_STATFS_NODELAY);
126 if (!rc) {
127 __u32 blk_size = osfs.os_bsize >> 10;
128 __u64 result = osfs.os_bavail;
129
130 while (blk_size >>= 1)
131 result <<= 1;
132
133 seq_printf(m, "%llu\n", result);
134 }
135
136 return rc;
137 }
138 LPROC_SEQ_FOPS_RO(ll_kbytesavail);
139
ll_filestotal_seq_show(struct seq_file * m,void * v)140 static int ll_filestotal_seq_show(struct seq_file *m, void *v)
141 {
142 struct super_block *sb = (struct super_block *)m->private;
143 struct obd_statfs osfs;
144 int rc;
145
146 LASSERT(sb != NULL);
147 rc = ll_statfs_internal(sb, &osfs,
148 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
149 OBD_STATFS_NODELAY);
150 if (!rc)
151 seq_printf(m, "%llu\n", osfs.os_files);
152
153 return rc;
154 }
155 LPROC_SEQ_FOPS_RO(ll_filestotal);
156
ll_filesfree_seq_show(struct seq_file * m,void * v)157 static int ll_filesfree_seq_show(struct seq_file *m, void *v)
158 {
159 struct super_block *sb = (struct super_block *)m->private;
160 struct obd_statfs osfs;
161 int rc;
162
163 LASSERT(sb != NULL);
164 rc = ll_statfs_internal(sb, &osfs,
165 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
166 OBD_STATFS_NODELAY);
167 if (!rc)
168 seq_printf(m, "%llu\n", osfs.os_ffree);
169
170 return rc;
171 }
172 LPROC_SEQ_FOPS_RO(ll_filesfree);
173
ll_client_type_seq_show(struct seq_file * m,void * v)174 static int ll_client_type_seq_show(struct seq_file *m, void *v)
175 {
176 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
177
178 LASSERT(sbi != NULL);
179
180 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
181 seq_puts(m, "remote client\n");
182 else
183 seq_puts(m, "local client\n");
184
185 return 0;
186 }
187 LPROC_SEQ_FOPS_RO(ll_client_type);
188
ll_fstype_seq_show(struct seq_file * m,void * v)189 static int ll_fstype_seq_show(struct seq_file *m, void *v)
190 {
191 struct super_block *sb = (struct super_block *)m->private;
192
193 LASSERT(sb != NULL);
194 seq_printf(m, "%s\n", sb->s_type->name);
195 return 0;
196 }
197 LPROC_SEQ_FOPS_RO(ll_fstype);
198
ll_sb_uuid_seq_show(struct seq_file * m,void * v)199 static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
200 {
201 struct super_block *sb = (struct super_block *)m->private;
202
203 LASSERT(sb != NULL);
204 seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
205 return 0;
206 }
207 LPROC_SEQ_FOPS_RO(ll_sb_uuid);
208
ll_site_stats_seq_show(struct seq_file * m,void * v)209 static int ll_site_stats_seq_show(struct seq_file *m, void *v)
210 {
211 struct super_block *sb = m->private;
212
213 /*
214 * See description of statistical counters in struct cl_site, and
215 * struct lu_site.
216 */
217 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
218 }
219 LPROC_SEQ_FOPS_RO(ll_site_stats);
220
ll_max_readahead_mb_seq_show(struct seq_file * m,void * v)221 static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
222 {
223 struct super_block *sb = m->private;
224 struct ll_sb_info *sbi = ll_s2sbi(sb);
225 long pages_number;
226 int mult;
227
228 spin_lock(&sbi->ll_lock);
229 pages_number = sbi->ll_ra_info.ra_max_pages;
230 spin_unlock(&sbi->ll_lock);
231
232 mult = 1 << (20 - PAGE_CACHE_SHIFT);
233 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
234 }
235
ll_max_readahead_mb_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)236 static ssize_t ll_max_readahead_mb_seq_write(struct file *file,
237 const char __user *buffer,
238 size_t count, loff_t *off)
239 {
240 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
241 struct ll_sb_info *sbi = ll_s2sbi(sb);
242 int mult, rc, pages_number;
243
244 mult = 1 << (20 - PAGE_CACHE_SHIFT);
245 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
246 if (rc)
247 return rc;
248
249 if (pages_number < 0 || pages_number > totalram_pages / 2) {
250 CERROR("can't set file readahead more than %lu MB\n",
251 totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1)); /*1/2 of RAM*/
252 return -ERANGE;
253 }
254
255 spin_lock(&sbi->ll_lock);
256 sbi->ll_ra_info.ra_max_pages = pages_number;
257 spin_unlock(&sbi->ll_lock);
258
259 return count;
260 }
261 LPROC_SEQ_FOPS(ll_max_readahead_mb);
262
ll_max_readahead_per_file_mb_seq_show(struct seq_file * m,void * v)263 static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
264 {
265 struct super_block *sb = m->private;
266 struct ll_sb_info *sbi = ll_s2sbi(sb);
267 long pages_number;
268 int mult;
269
270 spin_lock(&sbi->ll_lock);
271 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
272 spin_unlock(&sbi->ll_lock);
273
274 mult = 1 << (20 - PAGE_CACHE_SHIFT);
275 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
276 }
277
ll_max_readahead_per_file_mb_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)278 static ssize_t ll_max_readahead_per_file_mb_seq_write(struct file *file,
279 const char __user *buffer,
280 size_t count, loff_t *off)
281 {
282 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
283 struct ll_sb_info *sbi = ll_s2sbi(sb);
284 int mult, rc, pages_number;
285
286 mult = 1 << (20 - PAGE_CACHE_SHIFT);
287 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
288 if (rc)
289 return rc;
290
291 if (pages_number < 0 ||
292 pages_number > sbi->ll_ra_info.ra_max_pages) {
293 CERROR("can't set file readahead more than max_read_ahead_mb %lu MB\n",
294 sbi->ll_ra_info.ra_max_pages);
295 return -ERANGE;
296 }
297
298 spin_lock(&sbi->ll_lock);
299 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
300 spin_unlock(&sbi->ll_lock);
301
302 return count;
303 }
304 LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
305
ll_max_read_ahead_whole_mb_seq_show(struct seq_file * m,void * unused)306 static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *unused)
307 {
308 struct super_block *sb = m->private;
309 struct ll_sb_info *sbi = ll_s2sbi(sb);
310 long pages_number;
311 int mult;
312
313 spin_lock(&sbi->ll_lock);
314 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
315 spin_unlock(&sbi->ll_lock);
316
317 mult = 1 << (20 - PAGE_CACHE_SHIFT);
318 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
319 }
320
ll_max_read_ahead_whole_mb_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)321 static ssize_t ll_max_read_ahead_whole_mb_seq_write(struct file *file,
322 const char __user *buffer,
323 size_t count, loff_t *off)
324 {
325 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
326 struct ll_sb_info *sbi = ll_s2sbi(sb);
327 int mult, rc, pages_number;
328
329 mult = 1 << (20 - PAGE_CACHE_SHIFT);
330 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
331 if (rc)
332 return rc;
333
334 /* Cap this at the current max readahead window size, the readahead
335 * algorithm does this anyway so it's pointless to set it larger. */
336 if (pages_number < 0 ||
337 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
338 CERROR("can't set max_read_ahead_whole_mb more than max_read_ahead_per_file_mb: %lu\n",
339 sbi->ll_ra_info.ra_max_pages_per_file >> (20 - PAGE_CACHE_SHIFT));
340 return -ERANGE;
341 }
342
343 spin_lock(&sbi->ll_lock);
344 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
345 spin_unlock(&sbi->ll_lock);
346
347 return count;
348 }
349 LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
350
ll_max_cached_mb_seq_show(struct seq_file * m,void * v)351 static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
352 {
353 struct super_block *sb = m->private;
354 struct ll_sb_info *sbi = ll_s2sbi(sb);
355 struct cl_client_cache *cache = &sbi->ll_cache;
356 int shift = 20 - PAGE_CACHE_SHIFT;
357 int max_cached_mb;
358 int unused_mb;
359
360 max_cached_mb = cache->ccc_lru_max >> shift;
361 unused_mb = atomic_read(&cache->ccc_lru_left) >> shift;
362 seq_printf(m,
363 "users: %d\n"
364 "max_cached_mb: %d\n"
365 "used_mb: %d\n"
366 "unused_mb: %d\n"
367 "reclaim_count: %u\n",
368 atomic_read(&cache->ccc_users),
369 max_cached_mb,
370 max_cached_mb - unused_mb,
371 unused_mb,
372 cache->ccc_lru_shrinkers);
373 return 0;
374 }
375
ll_max_cached_mb_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)376 static ssize_t ll_max_cached_mb_seq_write(struct file *file,
377 const char __user *buffer,
378 size_t count, loff_t *off)
379 {
380 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
381 struct ll_sb_info *sbi = ll_s2sbi(sb);
382 struct cl_client_cache *cache = &sbi->ll_cache;
383 int mult, rc, pages_number;
384 int diff = 0;
385 int nrpages = 0;
386 char kernbuf[128];
387
388 if (count >= sizeof(kernbuf))
389 return -EINVAL;
390
391 if (copy_from_user(kernbuf, buffer, count))
392 return -EFAULT;
393 kernbuf[count] = 0;
394
395 mult = 1 << (20 - PAGE_CACHE_SHIFT);
396 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
397 kernbuf;
398 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
399 if (rc)
400 return rc;
401
402 if (pages_number < 0 || pages_number > totalram_pages) {
403 CERROR("%s: can't set max cache more than %lu MB\n",
404 ll_get_fsname(sb, NULL, 0),
405 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
406 return -ERANGE;
407 }
408
409 spin_lock(&sbi->ll_lock);
410 diff = pages_number - cache->ccc_lru_max;
411 spin_unlock(&sbi->ll_lock);
412
413 /* easy - add more LRU slots. */
414 if (diff >= 0) {
415 atomic_add(diff, &cache->ccc_lru_left);
416 rc = 0;
417 goto out;
418 }
419
420 diff = -diff;
421 while (diff > 0) {
422 int tmp;
423
424 /* reduce LRU budget from free slots. */
425 do {
426 int ov, nv;
427
428 ov = atomic_read(&cache->ccc_lru_left);
429 if (ov == 0)
430 break;
431
432 nv = ov > diff ? ov - diff : 0;
433 rc = atomic_cmpxchg(&cache->ccc_lru_left, ov, nv);
434 if (likely(ov == rc)) {
435 diff -= ov - nv;
436 nrpages += ov - nv;
437 break;
438 }
439 } while (1);
440
441 if (diff <= 0)
442 break;
443
444 if (sbi->ll_dt_exp == NULL) { /* being initialized */
445 rc = -ENODEV;
446 break;
447 }
448
449 /* difficult - have to ask OSCs to drop LRU slots. */
450 tmp = diff << 1;
451 rc = obd_set_info_async(NULL, sbi->ll_dt_exp,
452 sizeof(KEY_CACHE_LRU_SHRINK),
453 KEY_CACHE_LRU_SHRINK,
454 sizeof(tmp), &tmp, NULL);
455 if (rc < 0)
456 break;
457 }
458
459 out:
460 if (rc >= 0) {
461 spin_lock(&sbi->ll_lock);
462 cache->ccc_lru_max = pages_number;
463 spin_unlock(&sbi->ll_lock);
464 rc = count;
465 } else {
466 atomic_add(nrpages, &cache->ccc_lru_left);
467 }
468 return rc;
469 }
470 LPROC_SEQ_FOPS(ll_max_cached_mb);
471
ll_checksum_seq_show(struct seq_file * m,void * v)472 static int ll_checksum_seq_show(struct seq_file *m, void *v)
473 {
474 struct super_block *sb = m->private;
475 struct ll_sb_info *sbi = ll_s2sbi(sb);
476
477 seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
478 return 0;
479 }
480
ll_checksum_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)481 static ssize_t ll_checksum_seq_write(struct file *file,
482 const char __user *buffer,
483 size_t count, loff_t *off)
484 {
485 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
486 struct ll_sb_info *sbi = ll_s2sbi(sb);
487 int val, rc;
488
489 if (!sbi->ll_dt_exp)
490 /* Not set up yet */
491 return -EAGAIN;
492
493 rc = lprocfs_write_helper(buffer, count, &val);
494 if (rc)
495 return rc;
496 if (val)
497 sbi->ll_flags |= LL_SBI_CHECKSUM;
498 else
499 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
500
501 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
502 KEY_CHECKSUM, sizeof(val), &val, NULL);
503 if (rc)
504 CWARN("Failed to set OSC checksum flags: %d\n", rc);
505
506 return count;
507 }
508 LPROC_SEQ_FOPS(ll_checksum);
509
ll_max_rw_chunk_seq_show(struct seq_file * m,void * v)510 static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
511 {
512 struct super_block *sb = m->private;
513
514 seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
515 return 0;
516 }
517
ll_max_rw_chunk_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)518 static ssize_t ll_max_rw_chunk_seq_write(struct file *file,
519 const char __user *buffer,
520 size_t count, loff_t *off)
521 {
522 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
523 int rc, val;
524
525 rc = lprocfs_write_helper(buffer, count, &val);
526 if (rc)
527 return rc;
528 ll_s2sbi(sb)->ll_max_rw_chunk = val;
529 return count;
530 }
531 LPROC_SEQ_FOPS(ll_max_rw_chunk);
532
ll_rd_track_id(struct seq_file * m,enum stats_track_type type)533 static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
534 {
535 struct super_block *sb = m->private;
536
537 if (ll_s2sbi(sb)->ll_stats_track_type == type)
538 seq_printf(m, "%d\n", ll_s2sbi(sb)->ll_stats_track_id);
539 else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL)
540 seq_puts(m, "0 (all)\n");
541 else
542 seq_puts(m, "untracked\n");
543
544 return 0;
545 }
546
ll_wr_track_id(const char __user * buffer,unsigned long count,void * data,enum stats_track_type type)547 static int ll_wr_track_id(const char __user *buffer, unsigned long count,
548 void *data, enum stats_track_type type)
549 {
550 struct super_block *sb = data;
551 int rc, pid;
552
553 rc = lprocfs_write_helper(buffer, count, &pid);
554 if (rc)
555 return rc;
556 ll_s2sbi(sb)->ll_stats_track_id = pid;
557 if (pid == 0)
558 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
559 else
560 ll_s2sbi(sb)->ll_stats_track_type = type;
561 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
562 return count;
563 }
564
ll_track_pid_seq_show(struct seq_file * m,void * v)565 static int ll_track_pid_seq_show(struct seq_file *m, void *v)
566 {
567 return ll_rd_track_id(m, STATS_TRACK_PID);
568 }
569
ll_track_pid_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)570 static ssize_t ll_track_pid_seq_write(struct file *file,
571 const char __user *buffer,
572 size_t count, loff_t *off)
573 {
574 struct seq_file *seq = file->private_data;
575 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
576 }
577 LPROC_SEQ_FOPS(ll_track_pid);
578
ll_track_ppid_seq_show(struct seq_file * m,void * v)579 static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
580 {
581 return ll_rd_track_id(m, STATS_TRACK_PPID);
582 }
583
ll_track_ppid_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)584 static ssize_t ll_track_ppid_seq_write(struct file *file,
585 const char __user *buffer,
586 size_t count, loff_t *off)
587 {
588 struct seq_file *seq = file->private_data;
589 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
590 }
591 LPROC_SEQ_FOPS(ll_track_ppid);
592
ll_track_gid_seq_show(struct seq_file * m,void * v)593 static int ll_track_gid_seq_show(struct seq_file *m, void *v)
594 {
595 return ll_rd_track_id(m, STATS_TRACK_GID);
596 }
597
ll_track_gid_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)598 static ssize_t ll_track_gid_seq_write(struct file *file,
599 const char __user *buffer,
600 size_t count, loff_t *off)
601 {
602 struct seq_file *seq = file->private_data;
603 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
604 }
605 LPROC_SEQ_FOPS(ll_track_gid);
606
ll_statahead_max_seq_show(struct seq_file * m,void * v)607 static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
608 {
609 struct super_block *sb = m->private;
610 struct ll_sb_info *sbi = ll_s2sbi(sb);
611
612 seq_printf(m, "%u\n", sbi->ll_sa_max);
613 return 0;
614 }
615
ll_statahead_max_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)616 static ssize_t ll_statahead_max_seq_write(struct file *file,
617 const char __user *buffer,
618 size_t count, loff_t *off)
619 {
620 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
621 struct ll_sb_info *sbi = ll_s2sbi(sb);
622 int val, rc;
623
624 rc = lprocfs_write_helper(buffer, count, &val);
625 if (rc)
626 return rc;
627
628 if (val >= 0 && val <= LL_SA_RPC_MAX)
629 sbi->ll_sa_max = val;
630 else
631 CERROR("Bad statahead_max value %d. Valid values are in the range [0, %d]\n",
632 val, LL_SA_RPC_MAX);
633
634 return count;
635 }
636 LPROC_SEQ_FOPS(ll_statahead_max);
637
ll_statahead_agl_seq_show(struct seq_file * m,void * v)638 static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
639 {
640 struct super_block *sb = m->private;
641 struct ll_sb_info *sbi = ll_s2sbi(sb);
642
643 seq_printf(m, "%u\n", sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
644 return 0;
645 }
646
ll_statahead_agl_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)647 static ssize_t ll_statahead_agl_seq_write(struct file *file,
648 const char __user *buffer,
649 size_t count, loff_t *off)
650 {
651 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
652 struct ll_sb_info *sbi = ll_s2sbi(sb);
653 int val, rc;
654
655 rc = lprocfs_write_helper(buffer, count, &val);
656 if (rc)
657 return rc;
658
659 if (val)
660 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
661 else
662 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
663
664 return count;
665 }
666 LPROC_SEQ_FOPS(ll_statahead_agl);
667
ll_statahead_stats_seq_show(struct seq_file * m,void * v)668 static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
669 {
670 struct super_block *sb = m->private;
671 struct ll_sb_info *sbi = ll_s2sbi(sb);
672
673 seq_printf(m,
674 "statahead total: %u\n"
675 "statahead wrong: %u\n"
676 "agl total: %u\n",
677 atomic_read(&sbi->ll_sa_total),
678 atomic_read(&sbi->ll_sa_wrong),
679 atomic_read(&sbi->ll_agl_total));
680 return 0;
681 }
682 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
683
ll_lazystatfs_seq_show(struct seq_file * m,void * v)684 static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
685 {
686 struct super_block *sb = m->private;
687 struct ll_sb_info *sbi = ll_s2sbi(sb);
688
689 seq_printf(m, "%u\n", sbi->ll_flags & LL_SBI_LAZYSTATFS ? 1 : 0);
690 return 0;
691 }
692
ll_lazystatfs_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)693 static ssize_t ll_lazystatfs_seq_write(struct file *file,
694 const char __user *buffer,
695 size_t count, loff_t *off)
696 {
697 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
698 struct ll_sb_info *sbi = ll_s2sbi(sb);
699 int val, rc;
700
701 rc = lprocfs_write_helper(buffer, count, &val);
702 if (rc)
703 return rc;
704
705 if (val)
706 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
707 else
708 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
709
710 return count;
711 }
712 LPROC_SEQ_FOPS(ll_lazystatfs);
713
ll_max_easize_seq_show(struct seq_file * m,void * v)714 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
715 {
716 struct super_block *sb = m->private;
717 struct ll_sb_info *sbi = ll_s2sbi(sb);
718 unsigned int ealen;
719 int rc;
720
721 rc = ll_get_max_mdsize(sbi, &ealen);
722 if (rc)
723 return rc;
724
725 seq_printf(m, "%u\n", ealen);
726 return 0;
727 }
728 LPROC_SEQ_FOPS_RO(ll_max_easize);
729
ll_default_easize_seq_show(struct seq_file * m,void * v)730 static int ll_default_easize_seq_show(struct seq_file *m, void *v)
731 {
732 struct super_block *sb = m->private;
733 struct ll_sb_info *sbi = ll_s2sbi(sb);
734 unsigned int ealen;
735 int rc;
736
737 rc = ll_get_default_mdsize(sbi, &ealen);
738 if (rc)
739 return rc;
740
741 seq_printf(m, "%u\n", ealen);
742 return 0;
743 }
744 LPROC_SEQ_FOPS_RO(ll_default_easize);
745
ll_max_cookiesize_seq_show(struct seq_file * m,void * v)746 static int ll_max_cookiesize_seq_show(struct seq_file *m, void *v)
747 {
748 struct super_block *sb = m->private;
749 struct ll_sb_info *sbi = ll_s2sbi(sb);
750 unsigned int cookielen;
751 int rc;
752
753 rc = ll_get_max_cookiesize(sbi, &cookielen);
754 if (rc)
755 return rc;
756
757 seq_printf(m, "%u\n", cookielen);
758 return 0;
759 }
760 LPROC_SEQ_FOPS_RO(ll_max_cookiesize);
761
ll_default_cookiesize_seq_show(struct seq_file * m,void * v)762 static int ll_default_cookiesize_seq_show(struct seq_file *m, void *v)
763 {
764 struct super_block *sb = m->private;
765 struct ll_sb_info *sbi = ll_s2sbi(sb);
766 unsigned int cookielen;
767 int rc;
768
769 rc = ll_get_default_cookiesize(sbi, &cookielen);
770 if (rc)
771 return rc;
772
773 seq_printf(m, "%u\n", cookielen);
774 return 0;
775 }
776 LPROC_SEQ_FOPS_RO(ll_default_cookiesize);
777
ll_sbi_flags_seq_show(struct seq_file * m,void * v)778 static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
779 {
780 const char *str[] = LL_SBI_FLAGS;
781 struct super_block *sb = m->private;
782 int flags = ll_s2sbi(sb)->ll_flags;
783 int i = 0;
784
785 while (flags != 0) {
786 if (ARRAY_SIZE(str) <= i) {
787 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi flags please.\n",
788 ll_get_fsname(sb, NULL, 0));
789 return -EINVAL;
790 }
791
792 if (flags & 0x1)
793 seq_printf(m, "%s ", str[i]);
794 flags >>= 1;
795 ++i;
796 }
797 seq_printf(m, "\b\n");
798 return 0;
799 }
800 LPROC_SEQ_FOPS_RO(ll_sbi_flags);
801
ll_xattr_cache_seq_show(struct seq_file * m,void * v)802 static int ll_xattr_cache_seq_show(struct seq_file *m, void *v)
803 {
804 struct super_block *sb = m->private;
805 struct ll_sb_info *sbi = ll_s2sbi(sb);
806
807 seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
808
809 return 0;
810 }
811
ll_xattr_cache_seq_write(struct file * file,const char __user * buffer,size_t count,loff_t * off)812 static ssize_t ll_xattr_cache_seq_write(struct file *file,
813 const char __user *buffer,
814 size_t count, loff_t *off)
815 {
816 struct seq_file *seq = file->private_data;
817 struct super_block *sb = seq->private;
818 struct ll_sb_info *sbi = ll_s2sbi(sb);
819 int val, rc;
820
821 rc = lprocfs_write_helper(buffer, count, &val);
822 if (rc)
823 return rc;
824
825 if (val != 0 && val != 1)
826 return -ERANGE;
827
828 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
829 return -ENOTSUPP;
830
831 sbi->ll_xattr_cache_enabled = val;
832
833 return count;
834 }
835 LPROC_SEQ_FOPS(ll_xattr_cache);
836
837 static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
838 { "uuid", &ll_sb_uuid_fops, NULL, 0 },
839 /* { "mntpt_path", ll_rd_path, 0, 0 }, */
840 { "fstype", &ll_fstype_fops, NULL, 0 },
841 { "site", &ll_site_stats_fops, NULL, 0 },
842 { "blocksize", &ll_blksize_fops, NULL, 0 },
843 { "kbytestotal", &ll_kbytestotal_fops, NULL, 0 },
844 { "kbytesfree", &ll_kbytesfree_fops, NULL, 0 },
845 { "kbytesavail", &ll_kbytesavail_fops, NULL, 0 },
846 { "filestotal", &ll_filestotal_fops, NULL, 0 },
847 { "filesfree", &ll_filesfree_fops, NULL, 0 },
848 { "client_type", &ll_client_type_fops, NULL, 0 },
849 /* { "filegroups", lprocfs_rd_filegroups, 0, 0 }, */
850 { "max_read_ahead_mb", &ll_max_readahead_mb_fops, NULL },
851 { "max_read_ahead_per_file_mb", &ll_max_readahead_per_file_mb_fops,
852 NULL },
853 { "max_read_ahead_whole_mb", &ll_max_read_ahead_whole_mb_fops, NULL },
854 { "max_cached_mb", &ll_max_cached_mb_fops, NULL },
855 { "checksum_pages", &ll_checksum_fops, NULL },
856 { "max_rw_chunk", &ll_max_rw_chunk_fops, NULL },
857 { "stats_track_pid", &ll_track_pid_fops, NULL },
858 { "stats_track_ppid", &ll_track_ppid_fops, NULL },
859 { "stats_track_gid", &ll_track_gid_fops, NULL },
860 { "statahead_max", &ll_statahead_max_fops, NULL },
861 { "statahead_agl", &ll_statahead_agl_fops, NULL },
862 { "statahead_stats", &ll_statahead_stats_fops, NULL, 0 },
863 { "lazystatfs", &ll_lazystatfs_fops, NULL },
864 { "max_easize", &ll_max_easize_fops, NULL, 0 },
865 { "default_easize", &ll_default_easize_fops, NULL, 0 },
866 { "max_cookiesize", &ll_max_cookiesize_fops, NULL, 0 },
867 { "default_cookiesize", &ll_default_cookiesize_fops, NULL, 0 },
868 { "sbi_flags", &ll_sbi_flags_fops, NULL, 0 },
869 { "xattr_cache", &ll_xattr_cache_fops, NULL, 0 },
870 { NULL }
871 };
872
873 #define MAX_STRING_SIZE 128
874
875 static const struct llite_file_opcode {
876 __u32 opcode;
877 __u32 type;
878 const char *opname;
879 } llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
880 /* file operation */
881 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
882 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
883 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
884 "read_bytes" },
885 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
886 "write_bytes" },
887 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
888 "brw_read" },
889 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
890 "brw_write" },
891 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
892 "osc_read" },
893 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
894 "osc_write" },
895 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
896 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
897 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
898 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
899 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
900 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
901 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
902 /* inode operation */
903 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
904 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
905 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
906 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
907 /* dir inode operation */
908 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
909 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
910 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
911 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
912 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
913 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
914 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
915 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
916 /* special inode operation */
917 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
918 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
919 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
920 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
921 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
922 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
923 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
924 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
925 };
926
ll_stats_ops_tally(struct ll_sb_info * sbi,int op,int count)927 void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
928 {
929 if (!sbi->ll_stats)
930 return;
931 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
932 lprocfs_counter_add(sbi->ll_stats, op, count);
933 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
934 sbi->ll_stats_track_id == current->pid)
935 lprocfs_counter_add(sbi->ll_stats, op, count);
936 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
937 sbi->ll_stats_track_id == current->real_parent->pid)
938 lprocfs_counter_add(sbi->ll_stats, op, count);
939 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
940 sbi->ll_stats_track_id ==
941 from_kgid(&init_user_ns, current_gid()))
942 lprocfs_counter_add(sbi->ll_stats, op, count);
943 }
944 EXPORT_SYMBOL(ll_stats_ops_tally);
945
946 static const char *ra_stat_string[] = {
947 [RA_STAT_HIT] = "hits",
948 [RA_STAT_MISS] = "misses",
949 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
950 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
951 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
952 [RA_STAT_FAILED_MATCH] = "failed lock match",
953 [RA_STAT_DISCARDED] = "read but discarded",
954 [RA_STAT_ZERO_LEN] = "zero length file",
955 [RA_STAT_ZERO_WINDOW] = "zero size window",
956 [RA_STAT_EOF] = "read-ahead to EOF",
957 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
958 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
959 };
960
961 LPROC_SEQ_FOPS_RO_TYPE(llite, name);
962 LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
963
lprocfs_register_mountpoint(struct proc_dir_entry * parent,struct super_block * sb,char * osc,char * mdc)964 int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
965 struct super_block *sb, char *osc, char *mdc)
966 {
967 struct lprocfs_vars lvars[2];
968 struct lustre_sb_info *lsi = s2lsi(sb);
969 struct ll_sb_info *sbi = ll_s2sbi(sb);
970 struct obd_device *obd;
971 struct proc_dir_entry *dir;
972 char name[MAX_STRING_SIZE + 1], *ptr;
973 int err, id, len, rc;
974
975 memset(lvars, 0, sizeof(lvars));
976
977 name[MAX_STRING_SIZE] = '\0';
978 lvars[0].name = name;
979
980 LASSERT(sbi != NULL);
981 LASSERT(mdc != NULL);
982 LASSERT(osc != NULL);
983
984 /* Get fsname */
985 len = strlen(lsi->lsi_lmd->lmd_profile);
986 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
987 if (ptr && (strcmp(ptr, "-client") == 0))
988 len -= 7;
989
990 /* Mount info */
991 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
992 lsi->lsi_lmd->lmd_profile, sb);
993
994 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
995 if (IS_ERR(sbi->ll_proc_root)) {
996 err = PTR_ERR(sbi->ll_proc_root);
997 sbi->ll_proc_root = NULL;
998 return err;
999 }
1000
1001 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
1002 &vvp_dump_pgcache_file_ops, sbi);
1003 if (rc)
1004 CWARN("Error adding the dump_page_cache file\n");
1005
1006 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
1007 &ll_rw_extents_stats_fops, sbi);
1008 if (rc)
1009 CWARN("Error adding the extent_stats file\n");
1010
1011 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
1012 0644, &ll_rw_extents_stats_pp_fops, sbi);
1013 if (rc)
1014 CWARN("Error adding the extents_stats_per_process file\n");
1015
1016 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
1017 &ll_rw_offset_stats_fops, sbi);
1018 if (rc)
1019 CWARN("Error adding the offset_stats file\n");
1020
1021 /* File operations stats */
1022 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1023 LPROCFS_STATS_FLAG_NONE);
1024 if (sbi->ll_stats == NULL) {
1025 err = -ENOMEM;
1026 goto out;
1027 }
1028 /* do counter init */
1029 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1030 __u32 type = llite_opcode_table[id].type;
1031 void *ptr = NULL;
1032 if (type & LPROCFS_TYPE_REGS)
1033 ptr = "regs";
1034 else if (type & LPROCFS_TYPE_BYTES)
1035 ptr = "bytes";
1036 else if (type & LPROCFS_TYPE_PAGES)
1037 ptr = "pages";
1038 lprocfs_counter_init(sbi->ll_stats,
1039 llite_opcode_table[id].opcode,
1040 (type & LPROCFS_CNTR_AVGMINMAX),
1041 llite_opcode_table[id].opname, ptr);
1042 }
1043 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
1044 if (err)
1045 goto out;
1046
1047 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1048 LPROCFS_STATS_FLAG_NONE);
1049 if (sbi->ll_ra_stats == NULL) {
1050 err = -ENOMEM;
1051 goto out;
1052 }
1053
1054 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1055 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1056 ra_stat_string[id], "pages");
1057 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
1058 sbi->ll_ra_stats);
1059 if (err)
1060 goto out;
1061
1062
1063 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1064 if (err)
1065 goto out;
1066
1067 /* MDC info */
1068 obd = class_name2obd(mdc);
1069
1070 LASSERT(obd != NULL);
1071 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1072 LASSERT(obd->obd_type->typ_name != NULL);
1073
1074 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1075 if (dir == NULL) {
1076 err = -ENOMEM;
1077 goto out;
1078 }
1079
1080 snprintf(name, MAX_STRING_SIZE, "common_name");
1081 lvars[0].fops = &llite_name_fops;
1082 err = lprocfs_add_vars(dir, lvars, obd);
1083 if (err)
1084 goto out;
1085
1086 snprintf(name, MAX_STRING_SIZE, "uuid");
1087 lvars[0].fops = &llite_uuid_fops;
1088 err = lprocfs_add_vars(dir, lvars, obd);
1089 if (err)
1090 goto out;
1091
1092 /* OSC */
1093 obd = class_name2obd(osc);
1094
1095 LASSERT(obd != NULL);
1096 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1097 LASSERT(obd->obd_type->typ_name != NULL);
1098
1099 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
1100 if (dir == NULL) {
1101 err = -ENOMEM;
1102 goto out;
1103 }
1104
1105 snprintf(name, MAX_STRING_SIZE, "common_name");
1106 lvars[0].fops = &llite_name_fops;
1107 err = lprocfs_add_vars(dir, lvars, obd);
1108 if (err)
1109 goto out;
1110
1111 snprintf(name, MAX_STRING_SIZE, "uuid");
1112 lvars[0].fops = &llite_uuid_fops;
1113 err = lprocfs_add_vars(dir, lvars, obd);
1114 out:
1115 if (err) {
1116 lprocfs_remove(&sbi->ll_proc_root);
1117 lprocfs_free_stats(&sbi->ll_ra_stats);
1118 lprocfs_free_stats(&sbi->ll_stats);
1119 }
1120 return err;
1121 }
1122
lprocfs_unregister_mountpoint(struct ll_sb_info * sbi)1123 void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1124 {
1125 if (sbi->ll_proc_root) {
1126 lprocfs_remove(&sbi->ll_proc_root);
1127 lprocfs_free_stats(&sbi->ll_ra_stats);
1128 lprocfs_free_stats(&sbi->ll_stats);
1129 }
1130 }
1131 #undef MAX_STRING_SIZE
1132
1133 #define pct(a, b) (b ? a * 100 / b : 0)
1134
ll_display_extents_info(struct ll_rw_extents_info * io_extents,struct seq_file * seq,int which)1135 static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1136 struct seq_file *seq, int which)
1137 {
1138 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1139 unsigned long start, end, r, w;
1140 char *unitp = "KMGTPEZY";
1141 int i, units = 10;
1142 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1143
1144 read_cum = 0;
1145 write_cum = 0;
1146 start = 0;
1147
1148 for (i = 0; i < LL_HIST_MAX; i++) {
1149 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1150 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1151 }
1152
1153 for (i = 0; i < LL_HIST_MAX; i++) {
1154 r = pp_info->pp_r_hist.oh_buckets[i];
1155 w = pp_info->pp_w_hist.oh_buckets[i];
1156 read_cum += r;
1157 write_cum += w;
1158 end = 1 << (i + LL_HIST_START - units);
1159 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | %14lu %4lu %4lu\n",
1160 start, *unitp, end, *unitp,
1161 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1162 r, pct(r, read_tot), pct(read_cum, read_tot),
1163 w, pct(w, write_tot), pct(write_cum, write_tot));
1164 start = end;
1165 if (start == 1<<10) {
1166 start = 1;
1167 units += 10;
1168 unitp++;
1169 }
1170 if (read_cum == read_tot && write_cum == write_tot)
1171 break;
1172 }
1173 }
1174
ll_rw_extents_stats_pp_seq_show(struct seq_file * seq,void * v)1175 static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1176 {
1177 struct timeval now;
1178 struct ll_sb_info *sbi = seq->private;
1179 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1180 int k;
1181
1182 do_gettimeofday(&now);
1183
1184 if (!sbi->ll_rw_stats_on) {
1185 seq_printf(seq, "disabled\n"
1186 "write anything in this file to activate, then 0 or \"[D/d]isabled\" to deactivate\n");
1187 return 0;
1188 }
1189 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1190 now.tv_sec, (unsigned long)now.tv_usec);
1191 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1192 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1193 "extents", "calls", "%", "cum%",
1194 "calls", "%", "cum%");
1195 spin_lock(&sbi->ll_pp_extent_lock);
1196 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1197 if (io_extents->pp_extents[k].pid != 0) {
1198 seq_printf(seq, "\nPID: %d\n",
1199 io_extents->pp_extents[k].pid);
1200 ll_display_extents_info(io_extents, seq, k);
1201 }
1202 }
1203 spin_unlock(&sbi->ll_pp_extent_lock);
1204 return 0;
1205 }
1206
ll_rw_extents_stats_pp_seq_write(struct file * file,const char __user * buf,size_t len,loff_t * off)1207 static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
1208 const char __user *buf,
1209 size_t len,
1210 loff_t *off)
1211 {
1212 struct seq_file *seq = file->private_data;
1213 struct ll_sb_info *sbi = seq->private;
1214 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1215 int i;
1216 int value = 1, rc = 0;
1217
1218 if (len == 0)
1219 return -EINVAL;
1220
1221 rc = lprocfs_write_helper(buf, len, &value);
1222 if (rc < 0 && len < 16) {
1223 char kernbuf[16];
1224
1225 if (copy_from_user(kernbuf, buf, len))
1226 return -EFAULT;
1227 kernbuf[len] = 0;
1228
1229 if (kernbuf[len - 1] == '\n')
1230 kernbuf[len - 1] = 0;
1231
1232 if (strcmp(kernbuf, "disabled") == 0 ||
1233 strcmp(kernbuf, "Disabled") == 0)
1234 value = 0;
1235 }
1236
1237 if (value == 0)
1238 sbi->ll_rw_stats_on = 0;
1239 else
1240 sbi->ll_rw_stats_on = 1;
1241
1242 spin_lock(&sbi->ll_pp_extent_lock);
1243 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1244 io_extents->pp_extents[i].pid = 0;
1245 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1246 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1247 }
1248 spin_unlock(&sbi->ll_pp_extent_lock);
1249 return len;
1250 }
1251
1252 LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1253
ll_rw_extents_stats_seq_show(struct seq_file * seq,void * v)1254 static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1255 {
1256 struct timeval now;
1257 struct ll_sb_info *sbi = seq->private;
1258 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1259
1260 do_gettimeofday(&now);
1261
1262 if (!sbi->ll_rw_stats_on) {
1263 seq_printf(seq, "disabled\n"
1264 "write anything in this file to activate, then 0 or \"[D/d]isabled\" to deactivate\n");
1265 return 0;
1266 }
1267 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1268 now.tv_sec, (unsigned long)now.tv_usec);
1269
1270 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1271 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1272 "extents", "calls", "%", "cum%",
1273 "calls", "%", "cum%");
1274 spin_lock(&sbi->ll_lock);
1275 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1276 spin_unlock(&sbi->ll_lock);
1277
1278 return 0;
1279 }
1280
ll_rw_extents_stats_seq_write(struct file * file,const char __user * buf,size_t len,loff_t * off)1281 static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1282 const char __user *buf,
1283 size_t len, loff_t *off)
1284 {
1285 struct seq_file *seq = file->private_data;
1286 struct ll_sb_info *sbi = seq->private;
1287 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1288 int i;
1289 int value = 1, rc = 0;
1290
1291 if (len == 0)
1292 return -EINVAL;
1293
1294 rc = lprocfs_write_helper(buf, len, &value);
1295 if (rc < 0 && len < 16) {
1296 char kernbuf[16];
1297
1298 if (copy_from_user(kernbuf, buf, len))
1299 return -EFAULT;
1300 kernbuf[len] = 0;
1301
1302 if (kernbuf[len - 1] == '\n')
1303 kernbuf[len - 1] = 0;
1304
1305 if (strcmp(kernbuf, "disabled") == 0 ||
1306 strcmp(kernbuf, "Disabled") == 0)
1307 value = 0;
1308 }
1309
1310 if (value == 0)
1311 sbi->ll_rw_stats_on = 0;
1312 else
1313 sbi->ll_rw_stats_on = 1;
1314
1315 spin_lock(&sbi->ll_pp_extent_lock);
1316 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1317 io_extents->pp_extents[i].pid = 0;
1318 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1319 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1320 }
1321 spin_unlock(&sbi->ll_pp_extent_lock);
1322
1323 return len;
1324 }
1325 LPROC_SEQ_FOPS(ll_rw_extents_stats);
1326
ll_rw_stats_tally(struct ll_sb_info * sbi,pid_t pid,struct ll_file_data * file,loff_t pos,size_t count,int rw)1327 void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1328 struct ll_file_data *file, loff_t pos,
1329 size_t count, int rw)
1330 {
1331 int i, cur = -1;
1332 struct ll_rw_process_info *process;
1333 struct ll_rw_process_info *offset;
1334 int *off_count = &sbi->ll_rw_offset_entry_count;
1335 int *process_count = &sbi->ll_offset_process_count;
1336 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1337
1338 if (!sbi->ll_rw_stats_on)
1339 return;
1340 process = sbi->ll_rw_process_info;
1341 offset = sbi->ll_rw_offset_info;
1342
1343 spin_lock(&sbi->ll_pp_extent_lock);
1344 /* Extent statistics */
1345 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1346 if (io_extents->pp_extents[i].pid == pid) {
1347 cur = i;
1348 break;
1349 }
1350 }
1351
1352 if (cur == -1) {
1353 /* new process */
1354 sbi->ll_extent_process_count =
1355 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1356 cur = sbi->ll_extent_process_count;
1357 io_extents->pp_extents[cur].pid = pid;
1358 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1359 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1360 }
1361
1362 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1363 (i < (LL_HIST_MAX - 1)); i++);
1364 if (rw == 0) {
1365 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1366 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1367 } else {
1368 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1369 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1370 }
1371 spin_unlock(&sbi->ll_pp_extent_lock);
1372
1373 spin_lock(&sbi->ll_process_lock);
1374 /* Offset statistics */
1375 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1376 if (process[i].rw_pid == pid) {
1377 if (process[i].rw_last_file != file) {
1378 process[i].rw_range_start = pos;
1379 process[i].rw_last_file_pos = pos + count;
1380 process[i].rw_smallest_extent = count;
1381 process[i].rw_largest_extent = count;
1382 process[i].rw_offset = 0;
1383 process[i].rw_last_file = file;
1384 spin_unlock(&sbi->ll_process_lock);
1385 return;
1386 }
1387 if (process[i].rw_last_file_pos != pos) {
1388 *off_count =
1389 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1390 offset[*off_count].rw_op = process[i].rw_op;
1391 offset[*off_count].rw_pid = pid;
1392 offset[*off_count].rw_range_start =
1393 process[i].rw_range_start;
1394 offset[*off_count].rw_range_end =
1395 process[i].rw_last_file_pos;
1396 offset[*off_count].rw_smallest_extent =
1397 process[i].rw_smallest_extent;
1398 offset[*off_count].rw_largest_extent =
1399 process[i].rw_largest_extent;
1400 offset[*off_count].rw_offset =
1401 process[i].rw_offset;
1402 process[i].rw_op = rw;
1403 process[i].rw_range_start = pos;
1404 process[i].rw_smallest_extent = count;
1405 process[i].rw_largest_extent = count;
1406 process[i].rw_offset = pos -
1407 process[i].rw_last_file_pos;
1408 }
1409 if (process[i].rw_smallest_extent > count)
1410 process[i].rw_smallest_extent = count;
1411 if (process[i].rw_largest_extent < count)
1412 process[i].rw_largest_extent = count;
1413 process[i].rw_last_file_pos = pos + count;
1414 spin_unlock(&sbi->ll_process_lock);
1415 return;
1416 }
1417 }
1418 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1419 process[*process_count].rw_pid = pid;
1420 process[*process_count].rw_op = rw;
1421 process[*process_count].rw_range_start = pos;
1422 process[*process_count].rw_last_file_pos = pos + count;
1423 process[*process_count].rw_smallest_extent = count;
1424 process[*process_count].rw_largest_extent = count;
1425 process[*process_count].rw_offset = 0;
1426 process[*process_count].rw_last_file = file;
1427 spin_unlock(&sbi->ll_process_lock);
1428 }
1429
ll_rw_offset_stats_seq_show(struct seq_file * seq,void * v)1430 static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1431 {
1432 struct timeval now;
1433 struct ll_sb_info *sbi = seq->private;
1434 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1435 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1436 int i;
1437
1438 do_gettimeofday(&now);
1439
1440 if (!sbi->ll_rw_stats_on) {
1441 seq_printf(seq, "disabled\n"
1442 "write anything in this file to activate, then 0 or \"[D/d]isabled\" to deactivate\n");
1443 return 0;
1444 }
1445 spin_lock(&sbi->ll_process_lock);
1446
1447 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
1448 now.tv_sec, (unsigned long)now.tv_usec);
1449 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1450 "R/W", "PID", "RANGE START", "RANGE END",
1451 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1452 /* We stored the discontiguous offsets here; print them first */
1453 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
1454 if (offset[i].rw_pid != 0)
1455 seq_printf(seq,
1456 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1457 offset[i].rw_op == READ ? 'R' : 'W',
1458 offset[i].rw_pid,
1459 offset[i].rw_range_start,
1460 offset[i].rw_range_end,
1461 (unsigned long)offset[i].rw_smallest_extent,
1462 (unsigned long)offset[i].rw_largest_extent,
1463 offset[i].rw_offset);
1464 }
1465 /* Then print the current offsets for each process */
1466 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1467 if (process[i].rw_pid != 0)
1468 seq_printf(seq,
1469 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1470 process[i].rw_op == READ ? 'R' : 'W',
1471 process[i].rw_pid,
1472 process[i].rw_range_start,
1473 process[i].rw_last_file_pos,
1474 (unsigned long)process[i].rw_smallest_extent,
1475 (unsigned long)process[i].rw_largest_extent,
1476 process[i].rw_offset);
1477 }
1478 spin_unlock(&sbi->ll_process_lock);
1479
1480 return 0;
1481 }
1482
ll_rw_offset_stats_seq_write(struct file * file,const char __user * buf,size_t len,loff_t * off)1483 static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
1484 const char __user *buf,
1485 size_t len, loff_t *off)
1486 {
1487 struct seq_file *seq = file->private_data;
1488 struct ll_sb_info *sbi = seq->private;
1489 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1490 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1491 int value = 1, rc = 0;
1492
1493 if (len == 0)
1494 return -EINVAL;
1495
1496 rc = lprocfs_write_helper(buf, len, &value);
1497
1498 if (rc < 0 && len < 16) {
1499 char kernbuf[16];
1500
1501 if (copy_from_user(kernbuf, buf, len))
1502 return -EFAULT;
1503 kernbuf[len] = 0;
1504
1505 if (kernbuf[len - 1] == '\n')
1506 kernbuf[len - 1] = 0;
1507
1508 if (strcmp(kernbuf, "disabled") == 0 ||
1509 strcmp(kernbuf, "Disabled") == 0)
1510 value = 0;
1511 }
1512
1513 if (value == 0)
1514 sbi->ll_rw_stats_on = 0;
1515 else
1516 sbi->ll_rw_stats_on = 1;
1517
1518 spin_lock(&sbi->ll_process_lock);
1519 sbi->ll_offset_process_count = 0;
1520 sbi->ll_rw_offset_entry_count = 0;
1521 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1522 LL_PROCESS_HIST_MAX);
1523 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1524 LL_OFFSET_HIST_MAX);
1525 spin_unlock(&sbi->ll_process_lock);
1526
1527 return len;
1528 }
1529
1530 LPROC_SEQ_FOPS(ll_rw_offset_stats);
1531
lprocfs_llite_init_vars(struct lprocfs_static_vars * lvars)1532 void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
1533 {
1534 lvars->module_vars = NULL;
1535 lvars->obd_vars = lprocfs_llite_obd_vars;
1536 }
1537