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Staging: lustre: llite: Remove C99 '//' comments
[linux-2.6-block.git] / drivers / staging / lustre / lustre / llite / lproc_llite.c
CommitLineData
d7e09d03
PT		 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
67a235f5
GKH		 38#include "../include/lustre_lite.h"
39#include "../include/lprocfs_status.h"
d7e09d03 40#include <linux/seq_file.h>
67a235f5 41#include "../include/obd_support.h"
d7e09d03
PT		 42
43#include "llite_internal.h"
2d95f10e 44#include "vvp_internal.h"
d7e09d03 45
d7e09d03 46/* /proc/lustre/llite mount point registration */
b9c98cfa
FF		 47static struct file_operations ll_rw_extents_stats_fops;
48static struct file_operations ll_rw_extents_stats_pp_fops;
49static struct file_operations ll_rw_offset_stats_fops;
d7e09d03 50
73bb1da6 51static int ll_blksize_seq_show(struct seq_file *m, void *v)
d7e09d03 52{
73bb1da6 53 struct super_block *sb = (struct super_block *)m->private;
d7e09d03
PT		 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);
73bb1da6
PT		 61 if (!rc)
62 rc = seq_printf(m, "%u\n", osfs.os_bsize);
d7e09d03
PT		 63
64 return rc;
65}
73bb1da6 66LPROC_SEQ_FOPS_RO(ll_blksize);
d7e09d03 67
73bb1da6 68static int ll_kbytestotal_seq_show(struct seq_file *m, void *v)
d7e09d03 69{
73bb1da6 70 struct super_block *sb = (struct super_block *)m->private;
d7e09d03
PT		 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
b0f5aad5 85 rc = seq_printf(m, "%llu\n", result);
d7e09d03
PT		 86 }
87 return rc;
d7e09d03 88}
73bb1da6 89LPROC_SEQ_FOPS_RO(ll_kbytestotal);
d7e09d03 90
73bb1da6 91static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
d7e09d03 92{
73bb1da6 93 struct super_block *sb = (struct super_block *)m->private;
d7e09d03
PT		 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
b0f5aad5 108 rc = seq_printf(m, "%llu\n", result);
d7e09d03
PT		 109 }
110 return rc;
111}
73bb1da6 112LPROC_SEQ_FOPS_RO(ll_kbytesfree);
d7e09d03 113
73bb1da6 114static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
d7e09d03 115{
73bb1da6 116 struct super_block *sb = (struct super_block *)m->private;
d7e09d03
PT		 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
b0f5aad5 131 rc = seq_printf(m, "%llu\n", result);
d7e09d03
PT		 132 }
133 return rc;
134}
73bb1da6 135LPROC_SEQ_FOPS_RO(ll_kbytesavail);
d7e09d03 136
73bb1da6 137static int ll_filestotal_seq_show(struct seq_file *m, void *v)
d7e09d03 138{
73bb1da6 139 struct super_block *sb = (struct super_block *)m->private;
d7e09d03
PT		 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);
73bb1da6 147 if (!rc)
b0f5aad5 148 rc = seq_printf(m, "%llu\n", osfs.os_files);
d7e09d03
PT		 149 return rc;
150}
73bb1da6 151LPROC_SEQ_FOPS_RO(ll_filestotal);
d7e09d03 152
73bb1da6 153static int ll_filesfree_seq_show(struct seq_file *m, void *v)
d7e09d03 154{
73bb1da6 155 struct super_block *sb = (struct super_block *)m->private;
d7e09d03
PT		 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);
73bb1da6 163 if (!rc)
b0f5aad5 164 rc = seq_printf(m, "%llu\n", osfs.os_ffree);
d7e09d03 165 return rc;
d7e09d03 166}
73bb1da6 167LPROC_SEQ_FOPS_RO(ll_filesfree);
d7e09d03 168
73bb1da6 169static int ll_client_type_seq_show(struct seq_file *m, void *v)
d7e09d03 170{
73bb1da6 171 struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
d7e09d03
PT		 172 int rc;
173
174 LASSERT(sbi != NULL);
175
d7e09d03 176 if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
73bb1da6 177 rc = seq_printf(m, "remote client\n");
d7e09d03 178 else
73bb1da6 179 rc = seq_printf(m, "local client\n");
d7e09d03
PT		 180
181 return rc;
182}
73bb1da6 183LPROC_SEQ_FOPS_RO(ll_client_type);
d7e09d03 184
73bb1da6 185static int ll_fstype_seq_show(struct seq_file *m, void *v)
d7e09d03 186{
73bb1da6 187 struct super_block *sb = (struct super_block *)m->private;
d7e09d03
PT		 188
189 LASSERT(sb != NULL);
73bb1da6 190 return seq_printf(m, "%s\n", sb->s_type->name);
d7e09d03 191}
73bb1da6 192LPROC_SEQ_FOPS_RO(ll_fstype);
d7e09d03 193
73bb1da6 194static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
d7e09d03 195{
73bb1da6 196 struct super_block *sb = (struct super_block *)m->private;
d7e09d03
PT		 197
198 LASSERT(sb != NULL);
73bb1da6 199 return seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
d7e09d03 200}
73bb1da6 201LPROC_SEQ_FOPS_RO(ll_sb_uuid);
d7e09d03 202
73bb1da6 203static int ll_site_stats_seq_show(struct seq_file *m, void *v)
d7e09d03 204{
73bb1da6 205 struct super_block *sb = m->private;
d7e09d03
PT		 206
207 /*
208 * See description of statistical counters in struct cl_site, and
209 * struct lu_site.
210 */
73bb1da6 211 return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m);
d7e09d03 212}
73bb1da6 213LPROC_SEQ_FOPS_RO(ll_site_stats);
d7e09d03 214
73bb1da6 215static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v)
d7e09d03 216{
73bb1da6 217 struct super_block *sb = m->private;
d7e09d03
PT		 218 struct ll_sb_info *sbi = ll_s2sbi(sb);
219 long pages_number;
220 int mult;
221
222 spin_lock(&sbi->ll_lock);
223 pages_number = sbi->ll_ra_info.ra_max_pages;
224 spin_unlock(&sbi->ll_lock);
225
226 mult = 1 << (20 - PAGE_CACHE_SHIFT);
73bb1da6 227 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
d7e09d03
PT		 228}
229
73bb1da6
PT		 230static ssize_t ll_max_readahead_mb_seq_write(struct file *file, const char *buffer,
231 size_t count, loff_t *off)
d7e09d03 232{
73bb1da6 233 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
d7e09d03
PT		 234 struct ll_sb_info *sbi = ll_s2sbi(sb);
235 int mult, rc, pages_number;
236
237 mult = 1 << (20 - PAGE_CACHE_SHIFT);
238 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
239 if (rc)
240 return rc;
241
4f6cc9ab 242 if (pages_number < 0 || pages_number > totalram_pages / 2) {
d7e09d03 243 CERROR("can't set file readahead more than %lu MB\n",
4f6cc9ab 244 totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1)); /*1/2 of RAM*/
d7e09d03
PT		 245 return -ERANGE;
246 }
247
248 spin_lock(&sbi->ll_lock);
249 sbi->ll_ra_info.ra_max_pages = pages_number;
250 spin_unlock(&sbi->ll_lock);
251
252 return count;
253}
73bb1da6 254LPROC_SEQ_FOPS(ll_max_readahead_mb);
d7e09d03 255
73bb1da6 256static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v)
d7e09d03 257{
73bb1da6 258 struct super_block *sb = m->private;
d7e09d03
PT		 259 struct ll_sb_info *sbi = ll_s2sbi(sb);
260 long pages_number;
261 int mult;
262
263 spin_lock(&sbi->ll_lock);
264 pages_number = sbi->ll_ra_info.ra_max_pages_per_file;
265 spin_unlock(&sbi->ll_lock);
266
267 mult = 1 << (20 - PAGE_CACHE_SHIFT);
73bb1da6 268 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
d7e09d03
PT		 269}
270
73bb1da6
PT		 271static ssize_t ll_max_readahead_per_file_mb_seq_write(struct file *file,
272 const char *buffer,
273 size_t count, loff_t *off)
d7e09d03 274{
73bb1da6 275 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
d7e09d03
PT		 276 struct ll_sb_info *sbi = ll_s2sbi(sb);
277 int mult, rc, pages_number;
278
279 mult = 1 << (20 - PAGE_CACHE_SHIFT);
280 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
281 if (rc)
282 return rc;
283
284 if (pages_number < 0 ||
285 pages_number > sbi->ll_ra_info.ra_max_pages) {
286 CERROR("can't set file readahead more than"
287 "max_read_ahead_mb %lu MB\n",
288 sbi->ll_ra_info.ra_max_pages);
289 return -ERANGE;
290 }
291
292 spin_lock(&sbi->ll_lock);
293 sbi->ll_ra_info.ra_max_pages_per_file = pages_number;
294 spin_unlock(&sbi->ll_lock);
295
296 return count;
297}
73bb1da6 298LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb);
d7e09d03 299
73bb1da6 300static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *unused)
d7e09d03 301{
73bb1da6 302 struct super_block *sb = m->private;
d7e09d03
PT		 303 struct ll_sb_info *sbi = ll_s2sbi(sb);
304 long pages_number;
305 int mult;
306
307 spin_lock(&sbi->ll_lock);
308 pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages;
309 spin_unlock(&sbi->ll_lock);
310
311 mult = 1 << (20 - PAGE_CACHE_SHIFT);
73bb1da6 312 return lprocfs_seq_read_frac_helper(m, pages_number, mult);
d7e09d03
PT		 313}
314
73bb1da6
PT		 315static ssize_t ll_max_read_ahead_whole_mb_seq_write(struct file *file,
316 const char *buffer,
317 size_t count, loff_t *off)
d7e09d03 318{
73bb1da6 319 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
d7e09d03
PT		 320 struct ll_sb_info *sbi = ll_s2sbi(sb);
321 int mult, rc, pages_number;
322
323 mult = 1 << (20 - PAGE_CACHE_SHIFT);
324 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
325 if (rc)
326 return rc;
327
328 /* Cap this at the current max readahead window size, the readahead
329 * algorithm does this anyway so it's pointless to set it larger. */
330 if (pages_number < 0 ||
331 pages_number > sbi->ll_ra_info.ra_max_pages_per_file) {
332 CERROR("can't set max_read_ahead_whole_mb more than "
333 "max_read_ahead_per_file_mb: %lu\n",
334 sbi->ll_ra_info.ra_max_pages_per_file >> (20 - PAGE_CACHE_SHIFT));
335 return -ERANGE;
336 }
337
338 spin_lock(&sbi->ll_lock);
339 sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number;
340 spin_unlock(&sbi->ll_lock);
341
342 return count;
343}
73bb1da6 344LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb);
d7e09d03 345
73bb1da6 346static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v)
d7e09d03 347{
73bb1da6 348 struct super_block *sb = m->private;
d7e09d03
PT		 349 struct ll_sb_info *sbi = ll_s2sbi(sb);
350 struct cl_client_cache *cache = &sbi->ll_cache;
351 int shift = 20 - PAGE_CACHE_SHIFT;
352 int max_cached_mb;
353 int unused_mb;
354
d7e09d03
PT		 355 max_cached_mb = cache->ccc_lru_max >> shift;
356 unused_mb = atomic_read(&cache->ccc_lru_left) >> shift;
73bb1da6 357 return seq_printf(m,
d7e09d03
PT		 358 "users: %d\n"
359 "max_cached_mb: %d\n"
360 "used_mb: %d\n"
361 "unused_mb: %d\n"
362 "reclaim_count: %u\n",
363 atomic_read(&cache->ccc_users),
364 max_cached_mb,
365 max_cached_mb - unused_mb,
366 unused_mb,
367 cache->ccc_lru_shrinkers);
368}
369
a1e7e2d4
OD		 370static ssize_t ll_max_cached_mb_seq_write(struct file *file,
371 const char __user *buffer,
372 size_t count, loff_t *off)
d7e09d03 373{
73bb1da6 374 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
d7e09d03
PT		 375 struct ll_sb_info *sbi = ll_s2sbi(sb);
376 struct cl_client_cache *cache = &sbi->ll_cache;
377 int mult, rc, pages_number;
378 int diff = 0;
379 int nrpages = 0;
a1e7e2d4
OD		 380 char kernbuf[128];
381
382 if (count >= sizeof(kernbuf))
383 return -EINVAL;
384
385 if (copy_from_user(kernbuf, buffer, count))
386 return -EFAULT;
387 kernbuf[count] = 0;
d7e09d03
PT		 388
389 mult = 1 << (20 - PAGE_CACHE_SHIFT);
a1e7e2d4
OD		 390 buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) -
391 kernbuf;
d7e09d03
PT		 392 rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
393 if (rc)
0a3bdb00 394 return rc;
d7e09d03 395
4f6cc9ab 396 if (pages_number < 0 || pages_number > totalram_pages) {
d7e09d03
PT		 397 CERROR("%s: can't set max cache more than %lu MB\n",
398 ll_get_fsname(sb, NULL, 0),
4f6cc9ab 399 totalram_pages >> (20 - PAGE_CACHE_SHIFT));
0a3bdb00 400 return -ERANGE;
d7e09d03
PT		 401 }
402
403 if (sbi->ll_dt_exp == NULL)
0a3bdb00 404 return -ENODEV;
d7e09d03
PT		 405
406 spin_lock(&sbi->ll_lock);
407 diff = pages_number - cache->ccc_lru_max;
408 spin_unlock(&sbi->ll_lock);
409
410 /* easy - add more LRU slots. */
411 if (diff >= 0) {
412 atomic_add(diff, &cache->ccc_lru_left);
34e1f2bb
JL		 413 rc = 0;
414 goto out;
d7e09d03
PT		 415 }
416
417 diff = -diff;
418 while (diff > 0) {
419 int tmp;
420
421 /* reduce LRU budget from free slots. */
422 do {
423 int ov, nv;
424
425 ov = atomic_read(&cache->ccc_lru_left);
426 if (ov == 0)
427 break;
428
429 nv = ov > diff ? ov - diff : 0;
305ec768 430 rc = atomic_cmpxchg(&cache->ccc_lru_left, ov, nv);
d7e09d03
PT		 431 if (likely(ov == rc)) {
432 diff -= ov - nv;
433 nrpages += ov - nv;
434 break;
435 }
436 } while (1);
437
438 if (diff <= 0)
439 break;
440
441 /* difficult - have to ask OSCs to drop LRU slots. */
442 tmp = diff << 1;
443 rc = obd_set_info_async(NULL, sbi->ll_dt_exp,
444 sizeof(KEY_CACHE_LRU_SHRINK),
445 KEY_CACHE_LRU_SHRINK,
446 sizeof(tmp), &tmp, NULL);
447 if (rc < 0)
448 break;
449 }
450
451out:
452 if (rc >= 0) {
453 spin_lock(&sbi->ll_lock);
454 cache->ccc_lru_max = pages_number;
455 spin_unlock(&sbi->ll_lock);
456 rc = count;
457 } else {
458 atomic_add(nrpages, &cache->ccc_lru_left);
459 }
460 return rc;
461}
73bb1da6 462LPROC_SEQ_FOPS(ll_max_cached_mb);
d7e09d03 463
73bb1da6 464static int ll_checksum_seq_show(struct seq_file *m, void *v)
d7e09d03 465{
73bb1da6 466 struct super_block *sb = m->private;
d7e09d03
PT		 467 struct ll_sb_info *sbi = ll_s2sbi(sb);
468
73bb1da6 469 return seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
d7e09d03
PT		 470}
471
73bb1da6
PT		 472static ssize_t ll_checksum_seq_write(struct file *file, const char *buffer,
473 size_t count, loff_t *off)
d7e09d03 474{
73bb1da6 475 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
d7e09d03
PT		 476 struct ll_sb_info *sbi = ll_s2sbi(sb);
477 int val, rc;
478
479 if (!sbi->ll_dt_exp)
480 /* Not set up yet */
481 return -EAGAIN;
482
483 rc = lprocfs_write_helper(buffer, count, &val);
484 if (rc)
485 return rc;
486 if (val)
487 sbi->ll_flags |= LL_SBI_CHECKSUM;
488 else
489 sbi->ll_flags &= ~LL_SBI_CHECKSUM;
490
491 rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
492 KEY_CHECKSUM, sizeof(val), &val, NULL);
493 if (rc)
494 CWARN("Failed to set OSC checksum flags: %d\n", rc);
495
496 return count;
497}
73bb1da6 498LPROC_SEQ_FOPS(ll_checksum);
d7e09d03 499
73bb1da6 500static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
d7e09d03 501{
73bb1da6 502 struct super_block *sb = m->private;
d7e09d03 503
73bb1da6 504 return seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
d7e09d03
PT		 505}
506
73bb1da6
PT		 507static ssize_t ll_max_rw_chunk_seq_write(struct file *file, const char *buffer,
508 size_t count, loff_t *off)
d7e09d03 509{
73bb1da6 510 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
d7e09d03
PT		 511 int rc, val;
512
513 rc = lprocfs_write_helper(buffer, count, &val);
514 if (rc)
515 return rc;
516 ll_s2sbi(sb)->ll_max_rw_chunk = val;
517 return count;
518}
73bb1da6 519LPROC_SEQ_FOPS(ll_max_rw_chunk);
d7e09d03 520
73bb1da6 521static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type)
d7e09d03 522{
73bb1da6 523 struct super_block *sb = m->private;
d7e09d03
PT		 524
525 if (ll_s2sbi(sb)->ll_stats_track_type == type) {
73bb1da6 526 return seq_printf(m, "%d\n",
d7e09d03
PT		 527 ll_s2sbi(sb)->ll_stats_track_id);
528
529 } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) {
73bb1da6 530 return seq_printf(m, "0 (all)\n");
d7e09d03 531 } else {
73bb1da6 532 return seq_printf(m, "untracked\n");
d7e09d03
PT		 533 }
534}
535
536static int ll_wr_track_id(const char *buffer, unsigned long count, void *data,
537 enum stats_track_type type)
538{
539 struct super_block *sb = data;
540 int rc, pid;
541
542 rc = lprocfs_write_helper(buffer, count, &pid);
543 if (rc)
544 return rc;
545 ll_s2sbi(sb)->ll_stats_track_id = pid;
546 if (pid == 0)
547 ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL;
548 else
549 ll_s2sbi(sb)->ll_stats_track_type = type;
550 lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
551 return count;
552}
553
73bb1da6 554static int ll_track_pid_seq_show(struct seq_file *m, void *v)
d7e09d03 555{
73bb1da6 556 return ll_rd_track_id(m, STATS_TRACK_PID);
d7e09d03
PT		 557}
558
73bb1da6
PT		 559static ssize_t ll_track_pid_seq_write(struct file *file, const char *buffer,
560 size_t count, loff_t *off)
d7e09d03 561{
73bb1da6
PT		 562 struct seq_file *seq = file->private_data;
563 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID);
d7e09d03 564}
73bb1da6 565LPROC_SEQ_FOPS(ll_track_pid);
d7e09d03 566
73bb1da6 567static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
d7e09d03 568{
73bb1da6 569 return ll_rd_track_id(m, STATS_TRACK_PPID);
d7e09d03
PT		 570}
571
73bb1da6
PT		 572static ssize_t ll_track_ppid_seq_write(struct file *file, const char *buffer,
573 size_t count, loff_t *off)
d7e09d03 574{
73bb1da6
PT		 575 struct seq_file *seq = file->private_data;
576 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID);
d7e09d03 577}
73bb1da6 578LPROC_SEQ_FOPS(ll_track_ppid);
d7e09d03 579
73bb1da6 580static int ll_track_gid_seq_show(struct seq_file *m, void *v)
d7e09d03 581{
73bb1da6 582 return ll_rd_track_id(m, STATS_TRACK_GID);
d7e09d03
PT		 583}
584
73bb1da6
PT		 585static ssize_t ll_track_gid_seq_write(struct file *file, const char *buffer,
586 size_t count, loff_t *off)
d7e09d03 587{
73bb1da6
PT		 588 struct seq_file *seq = file->private_data;
589 return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID);
d7e09d03 590}
73bb1da6 591LPROC_SEQ_FOPS(ll_track_gid);
d7e09d03 592
73bb1da6 593static int ll_statahead_max_seq_show(struct seq_file *m, void *v)
d7e09d03 594{
73bb1da6 595 struct super_block *sb = m->private;
d7e09d03
PT		 596 struct ll_sb_info *sbi = ll_s2sbi(sb);
597
73bb1da6 598 return seq_printf(m, "%u\n", sbi->ll_sa_max);
d7e09d03
PT		 599}
600
73bb1da6
PT		 601static ssize_t ll_statahead_max_seq_write(struct file *file, const char *buffer,
602 size_t count, loff_t *off)
d7e09d03 603{
73bb1da6 604 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
d7e09d03
PT		 605 struct ll_sb_info *sbi = ll_s2sbi(sb);
606 int val, rc;
607
608 rc = lprocfs_write_helper(buffer, count, &val);
609 if (rc)
610 return rc;
611
612 if (val >= 0 && val <= LL_SA_RPC_MAX)
613 sbi->ll_sa_max = val;
614 else
615 CERROR("Bad statahead_max value %d. Valid values are in the "
616 "range [0, %d]\n", val, LL_SA_RPC_MAX);
617
618 return count;
619}
73bb1da6 620LPROC_SEQ_FOPS(ll_statahead_max);
d7e09d03 621
73bb1da6 622static int ll_statahead_agl_seq_show(struct seq_file *m, void *v)
d7e09d03 623{
73bb1da6 624 struct super_block *sb = m->private;
d7e09d03
PT		 625 struct ll_sb_info *sbi = ll_s2sbi(sb);
626
73bb1da6 627 return seq_printf(m, "%u\n",
d7e09d03
PT		 628 sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
629}
630
73bb1da6
PT		 631static ssize_t ll_statahead_agl_seq_write(struct file *file, const char *buffer,
632 size_t count, loff_t *off)
d7e09d03 633{
73bb1da6 634 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
d7e09d03
PT		 635 struct ll_sb_info *sbi = ll_s2sbi(sb);
636 int val, rc;
637
638 rc = lprocfs_write_helper(buffer, count, &val);
639 if (rc)
640 return rc;
641
642 if (val)
643 sbi->ll_flags |= LL_SBI_AGL_ENABLED;
644 else
645 sbi->ll_flags &= ~LL_SBI_AGL_ENABLED;
646
647 return count;
648}
73bb1da6 649LPROC_SEQ_FOPS(ll_statahead_agl);
d7e09d03 650
73bb1da6 651static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
d7e09d03 652{
73bb1da6 653 struct super_block *sb = m->private;
d7e09d03
PT		 654 struct ll_sb_info *sbi = ll_s2sbi(sb);
655
73bb1da6 656 return seq_printf(m,
d7e09d03
PT		 657 "statahead total: %u\n"
658 "statahead wrong: %u\n"
659 "agl total: %u\n",
660 atomic_read(&sbi->ll_sa_total),
661 atomic_read(&sbi->ll_sa_wrong),
662 atomic_read(&sbi->ll_agl_total));
663}
73bb1da6 664LPROC_SEQ_FOPS_RO(ll_statahead_stats);
d7e09d03 665
73bb1da6 666static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
d7e09d03 667{
73bb1da6 668 struct super_block *sb = m->private;
d7e09d03
PT		 669 struct ll_sb_info *sbi = ll_s2sbi(sb);
670
73bb1da6 671 return seq_printf(m, "%u\n",
d7e09d03
PT		 672 (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0);
673}
674
73bb1da6
PT		 675static ssize_t ll_lazystatfs_seq_write(struct file *file, const char *buffer,
676 size_t count, loff_t *off)
d7e09d03 677{
73bb1da6 678 struct super_block *sb = ((struct seq_file *)file->private_data)->private;
d7e09d03
PT		 679 struct ll_sb_info *sbi = ll_s2sbi(sb);
680 int val, rc;
681
682 rc = lprocfs_write_helper(buffer, count, &val);
683 if (rc)
684 return rc;
685
686 if (val)
687 sbi->ll_flags |= LL_SBI_LAZYSTATFS;
688 else
689 sbi->ll_flags &= ~LL_SBI_LAZYSTATFS;
690
691 return count;
692}
73bb1da6 693LPROC_SEQ_FOPS(ll_lazystatfs);
d7e09d03 694
44779340 695static int ll_max_easize_seq_show(struct seq_file *m, void *v)
d7e09d03 696{
73bb1da6 697 struct super_block *sb = m->private;
d7e09d03
PT		 698 struct ll_sb_info *sbi = ll_s2sbi(sb);
699 unsigned int ealen;
700 int rc;
701
702 rc = ll_get_max_mdsize(sbi, &ealen);
703 if (rc)
704 return rc;
705
73bb1da6 706 return seq_printf(m, "%u\n", ealen);
d7e09d03 707}
44779340
BB		 708LPROC_SEQ_FOPS_RO(ll_max_easize);
709
710static int ll_defult_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_default_mdsize(sbi, &ealen);
718 if (rc)
719 return rc;
720
721 return seq_printf(m, "%u\n", ealen);
722}
723LPROC_SEQ_FOPS_RO(ll_defult_easize);
724
725static int ll_max_cookiesize_seq_show(struct seq_file *m, void *v)
726{
727 struct super_block *sb = m->private;
728 struct ll_sb_info *sbi = ll_s2sbi(sb);
729 unsigned int cookielen;
730 int rc;
731
732 rc = ll_get_max_cookiesize(sbi, &cookielen);
733 if (rc)
734 return rc;
735
736 return seq_printf(m, "%u\n", cookielen);
737}
738LPROC_SEQ_FOPS_RO(ll_max_cookiesize);
739
740static int ll_defult_cookiesize_seq_show(struct seq_file *m, void *v)
741{
742 struct super_block *sb = m->private;
743 struct ll_sb_info *sbi = ll_s2sbi(sb);
744 unsigned int cookielen;
745 int rc;
746
747 rc = ll_get_default_cookiesize(sbi, &cookielen);
748 if (rc)
749 return rc;
750
751 return seq_printf(m, "%u\n", cookielen);
752}
753LPROC_SEQ_FOPS_RO(ll_defult_cookiesize);
d7e09d03 754
73bb1da6 755static int ll_sbi_flags_seq_show(struct seq_file *m, void *v)
d7e09d03
PT		 756{
757 const char *str[] = LL_SBI_FLAGS;
73bb1da6 758 struct super_block *sb = m->private;
d7e09d03
PT		 759 int flags = ll_s2sbi(sb)->ll_flags;
760 int i = 0;
d7e09d03
PT		 761
762 while (flags != 0) {
763 if (ARRAY_SIZE(str) <= i) {
764 CERROR("%s: Revise array LL_SBI_FLAGS to match sbi "
765 "flags please.\n", ll_get_fsname(sb, NULL, 0));
766 return -EINVAL;
767 }
768
769 if (flags & 0x1)
73bb1da6 770 seq_printf(m, "%s ", str[i]);
d7e09d03
PT		 771 flags >>= 1;
772 ++i;
773 }
73bb1da6
PT		 774 seq_printf(m, "\b\n");
775 return 0;
d7e09d03 776}
73bb1da6 777LPROC_SEQ_FOPS_RO(ll_sbi_flags);
d7e09d03 778
7fc1f831
AP		 779static int ll_xattr_cache_seq_show(struct seq_file *m, void *v)
780{
781 struct super_block *sb = m->private;
782 struct ll_sb_info *sbi = ll_s2sbi(sb);
783 int rc;
784
785 rc = seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
786
787 return rc;
788}
789
790static ssize_t ll_xattr_cache_seq_write(struct file *file, const char *buffer,
791 size_t count, loff_t *off)
792{
793 struct seq_file *seq = file->private_data;
794 struct super_block *sb = seq->private;
795 struct ll_sb_info *sbi = ll_s2sbi(sb);
796 int val, rc;
797
798 rc = lprocfs_write_helper(buffer, count, &val);
799 if (rc)
800 return rc;
801
802 if (val != 0 && val != 1)
803 return -ERANGE;
804
805 if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE))
806 return -ENOTSUPP;
807
808 sbi->ll_xattr_cache_enabled = val;
809
810 return count;
811}
812LPROC_SEQ_FOPS(ll_xattr_cache);
813
d7e09d03 814static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
95b86a76 815 { "uuid", &ll_sb_uuid_fops, NULL, 0 },
588bf52a 816 /* { "mntpt_path", ll_rd_path, 0, 0 }, */
95b86a76
SL		 817 { "fstype", &ll_fstype_fops, NULL, 0 },
818 { "site", &ll_site_stats_fops, NULL, 0 },
819 { "blocksize", &ll_blksize_fops, NULL, 0 },
820 { "kbytestotal", &ll_kbytestotal_fops, NULL, 0 },
821 { "kbytesfree", &ll_kbytesfree_fops, NULL, 0 },
822 { "kbytesavail", &ll_kbytesavail_fops, NULL, 0 },
823 { "filestotal", &ll_filestotal_fops, NULL, 0 },
824 { "filesfree", &ll_filesfree_fops, NULL, 0 },
825 { "client_type", &ll_client_type_fops, NULL, 0 },
588bf52a 826 /* { "filegroups", lprocfs_rd_filegroups, 0, 0 }, */
95b86a76
SL		 827 { "max_read_ahead_mb", &ll_max_readahead_mb_fops, NULL },
828 { "max_read_ahead_per_file_mb", &ll_max_readahead_per_file_mb_fops,
829 NULL },
830 { "max_read_ahead_whole_mb", &ll_max_read_ahead_whole_mb_fops, NULL },
831 { "max_cached_mb", &ll_max_cached_mb_fops, NULL },
832 { "checksum_pages", &ll_checksum_fops, NULL },
833 { "max_rw_chunk", &ll_max_rw_chunk_fops, NULL },
834 { "stats_track_pid", &ll_track_pid_fops, NULL },
835 { "stats_track_ppid", &ll_track_ppid_fops, NULL },
836 { "stats_track_gid", &ll_track_gid_fops, NULL },
837 { "statahead_max", &ll_statahead_max_fops, NULL },
838 { "statahead_agl", &ll_statahead_agl_fops, NULL },
839 { "statahead_stats", &ll_statahead_stats_fops, NULL, 0 },
840 { "lazystatfs", &ll_lazystatfs_fops, NULL },
841 { "max_easize", &ll_max_easize_fops, NULL, 0 },
842 { "default_easize", &ll_defult_easize_fops, NULL, 0 },
843 { "max_cookiesize", &ll_max_cookiesize_fops, NULL, 0 },
844 { "default_cookiesize", &ll_defult_cookiesize_fops, NULL, 0 },
845 { "sbi_flags", &ll_sbi_flags_fops, NULL, 0 },
846 { "xattr_cache", &ll_xattr_cache_fops, NULL, 0 },
ea7893bb 847 { NULL }
d7e09d03
PT		 848};
849
850#define MAX_STRING_SIZE 128
851
2d95f10e 852static const struct llite_file_opcode {
d7e09d03
PT		 853 __u32 opcode;
854 __u32 type;
855 const char *opname;
856} llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
857 /* file operation */
858 { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
859 { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
860 { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
861 "read_bytes" },
862 { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
863 "write_bytes" },
864 { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
865 "brw_read" },
866 { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
867 "brw_write" },
868 { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
869 "osc_read" },
870 { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
871 "osc_write" },
872 { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" },
873 { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" },
874 { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" },
875 { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" },
876 { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" },
877 { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" },
878 { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" },
879 /* inode operation */
880 { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" },
881 { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" },
882 { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
883 { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
884 /* dir inode operation */
885 { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" },
886 { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" },
887 { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" },
888 { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" },
889 { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" },
890 { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" },
891 { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" },
892 { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" },
893 /* special inode operation */
894 { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" },
895 { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" },
896 { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" },
897 { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" },
7fc1f831 898 { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" },
d7e09d03
PT		 899 { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" },
900 { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" },
901 { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" },
902};
903
904void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
905{
906 if (!sbi->ll_stats)
907 return;
908 if (sbi->ll_stats_track_type == STATS_TRACK_ALL)
909 lprocfs_counter_add(sbi->ll_stats, op, count);
910 else if (sbi->ll_stats_track_type == STATS_TRACK_PID &&
911 sbi->ll_stats_track_id == current->pid)
912 lprocfs_counter_add(sbi->ll_stats, op, count);
913 else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
b1beb91b 914 sbi->ll_stats_track_id == current->real_parent->pid)
d7e09d03
PT		 915 lprocfs_counter_add(sbi->ll_stats, op, count);
916 else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
4b1a25f0
PT		 917 sbi->ll_stats_track_id ==
918 from_kgid(&init_user_ns, current_gid()))
d7e09d03
PT		 919 lprocfs_counter_add(sbi->ll_stats, op, count);
920}
921EXPORT_SYMBOL(ll_stats_ops_tally);
922
923static const char *ra_stat_string[] = {
924 [RA_STAT_HIT] = "hits",
925 [RA_STAT_MISS] = "misses",
926 [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive",
927 [RA_STAT_MISS_IN_WINDOW] = "miss inside window",
928 [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page",
929 [RA_STAT_FAILED_MATCH] = "failed lock match",
930 [RA_STAT_DISCARDED] = "read but discarded",
931 [RA_STAT_ZERO_LEN] = "zero length file",
932 [RA_STAT_ZERO_WINDOW] = "zero size window",
933 [RA_STAT_EOF] = "read-ahead to EOF",
934 [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue",
935 [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page",
936};
937
73bb1da6
PT		 938LPROC_SEQ_FOPS_RO_TYPE(llite, name);
939LPROC_SEQ_FOPS_RO_TYPE(llite, uuid);
d7e09d03
PT		 940
941int lprocfs_register_mountpoint(struct proc_dir_entry *parent,
942 struct super_block *sb, char *osc, char *mdc)
943{
944 struct lprocfs_vars lvars[2];
945 struct lustre_sb_info *lsi = s2lsi(sb);
946 struct ll_sb_info *sbi = ll_s2sbi(sb);
947 struct obd_device *obd;
b59fe845 948 struct proc_dir_entry *dir;
d7e09d03
PT		 949 char name[MAX_STRING_SIZE + 1], *ptr;
950 int err, id, len, rc;
d7e09d03
PT		 951
952 memset(lvars, 0, sizeof(lvars));
953
954 name[MAX_STRING_SIZE] = '\0';
955 lvars[0].name = name;
956
957 LASSERT(sbi != NULL);
958 LASSERT(mdc != NULL);
959 LASSERT(osc != NULL);
960
961 /* Get fsname */
962 len = strlen(lsi->lsi_lmd->lmd_profile);
963 ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
964 if (ptr && (strcmp(ptr, "-client") == 0))
965 len -= 7;
966
967 /* Mount info */
968 snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len,
969 lsi->lsi_lmd->lmd_profile, sb);
970
971 sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL);
972 if (IS_ERR(sbi->ll_proc_root)) {
973 err = PTR_ERR(sbi->ll_proc_root);
974 sbi->ll_proc_root = NULL;
0a3bdb00 975 return err;
d7e09d03
PT		 976 }
977
978 rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444,
979 &vvp_dump_pgcache_file_ops, sbi);
980 if (rc)
981 CWARN("Error adding the dump_page_cache file\n");
982
983 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644,
984 &ll_rw_extents_stats_fops, sbi);
985 if (rc)
986 CWARN("Error adding the extent_stats file\n");
987
988 rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process",
989 0644, &ll_rw_extents_stats_pp_fops, sbi);
990 if (rc)
991 CWARN("Error adding the extents_stats_per_process file\n");
992
993 rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644,
994 &ll_rw_offset_stats_fops, sbi);
995 if (rc)
996 CWARN("Error adding the offset_stats file\n");
997
998 /* File operations stats */
999 sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES,
1000 LPROCFS_STATS_FLAG_NONE);
34e1f2bb
JL		 1001 if (sbi->ll_stats == NULL) {
1002 err = -ENOMEM;
1003 goto out;
1004 }
d7e09d03
PT		 1005 /* do counter init */
1006 for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) {
1007 __u32 type = llite_opcode_table[id].type;
1008 void *ptr = NULL;
1009 if (type & LPROCFS_TYPE_REGS)
1010 ptr = "regs";
1011 else if (type & LPROCFS_TYPE_BYTES)
1012 ptr = "bytes";
1013 else if (type & LPROCFS_TYPE_PAGES)
1014 ptr = "pages";
1015 lprocfs_counter_init(sbi->ll_stats,
1016 llite_opcode_table[id].opcode,
1017 (type & LPROCFS_CNTR_AVGMINMAX),
1018 llite_opcode_table[id].opname, ptr);
1019 }
1020 err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats);
1021 if (err)
34e1f2bb 1022 goto out;
d7e09d03
PT		 1023
1024 sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
1025 LPROCFS_STATS_FLAG_NONE);
34e1f2bb
JL		 1026 if (sbi->ll_ra_stats == NULL) {
1027 err = -ENOMEM;
1028 goto out;
1029 }
d7e09d03
PT		 1030
1031 for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++)
1032 lprocfs_counter_init(sbi->ll_ra_stats, id, 0,
1033 ra_stat_string[id], "pages");
1034 err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats",
1035 sbi->ll_ra_stats);
1036 if (err)
34e1f2bb 1037 goto out;
d7e09d03
PT		 1038
1039
1040 err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
1041 if (err)
34e1f2bb 1042 goto out;
d7e09d03
PT		 1043
1044 /* MDC info */
1045 obd = class_name2obd(mdc);
1046
1047 LASSERT(obd != NULL);
1048 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1049 LASSERT(obd->obd_type->typ_name != NULL);
1050
73bb1da6 1051 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
34e1f2bb
JL		 1052 if (dir == NULL) {
1053 err = -ENOMEM;
1054 goto out;
1055 }
73bb1da6
PT		 1056
1057 snprintf(name, MAX_STRING_SIZE, "common_name");
1058 lvars[0].fops = &llite_name_fops;
1059 err = lprocfs_add_vars(dir, lvars, obd);
d7e09d03 1060 if (err)
34e1f2bb 1061 goto out;
d7e09d03 1062
73bb1da6
PT		 1063 snprintf(name, MAX_STRING_SIZE, "uuid");
1064 lvars[0].fops = &llite_uuid_fops;
1065 err = lprocfs_add_vars(dir, lvars, obd);
d7e09d03 1066 if (err)
34e1f2bb 1067 goto out;
d7e09d03
PT		 1068
1069 /* OSC */
1070 obd = class_name2obd(osc);
1071
1072 LASSERT(obd != NULL);
1073 LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
1074 LASSERT(obd->obd_type->typ_name != NULL);
1075
73bb1da6 1076 dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
34e1f2bb
JL		 1077 if (dir == NULL) {
1078 err = -ENOMEM;
1079 goto out;
1080 }
73bb1da6
PT		 1081
1082 snprintf(name, MAX_STRING_SIZE, "common_name");
1083 lvars[0].fops = &llite_name_fops;
1084 err = lprocfs_add_vars(dir, lvars, obd);
d7e09d03 1085 if (err)
34e1f2bb 1086 goto out;
d7e09d03 1087
73bb1da6
PT		 1088 snprintf(name, MAX_STRING_SIZE, "uuid");
1089 lvars[0].fops = &llite_uuid_fops;
1090 err = lprocfs_add_vars(dir, lvars, obd);
d7e09d03
PT		 1091out:
1092 if (err) {
1093 lprocfs_remove(&sbi->ll_proc_root);
1094 lprocfs_free_stats(&sbi->ll_ra_stats);
1095 lprocfs_free_stats(&sbi->ll_stats);
1096 }
0a3bdb00 1097 return err;
d7e09d03
PT		 1098}
1099
1100void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi)
1101{
1102 if (sbi->ll_proc_root) {
1103 lprocfs_remove(&sbi->ll_proc_root);
1104 lprocfs_free_stats(&sbi->ll_ra_stats);
1105 lprocfs_free_stats(&sbi->ll_stats);
1106 }
1107}
1108#undef MAX_STRING_SIZE
1109
1d8cb70c 1110#define pct(a, b) (b ? a * 100 / b : 0)
d7e09d03
PT		 1111
1112static void ll_display_extents_info(struct ll_rw_extents_info *io_extents,
1113 struct seq_file *seq, int which)
1114{
1115 unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
1116 unsigned long start, end, r, w;
1117 char *unitp = "KMGTPEZY";
1118 int i, units = 10;
1119 struct per_process_info *pp_info = &io_extents->pp_extents[which];
1120
1121 read_cum = 0;
1122 write_cum = 0;
1123 start = 0;
1124
a58a38ac 1125 for (i = 0; i < LL_HIST_MAX; i++) {
d7e09d03
PT		 1126 read_tot += pp_info->pp_r_hist.oh_buckets[i];
1127 write_tot += pp_info->pp_w_hist.oh_buckets[i];
1128 }
1129
a58a38ac 1130 for (i = 0; i < LL_HIST_MAX; i++) {
d7e09d03
PT		 1131 r = pp_info->pp_r_hist.oh_buckets[i];
1132 w = pp_info->pp_w_hist.oh_buckets[i];
1133 read_cum += r;
1134 write_cum += w;
1135 end = 1 << (i + LL_HIST_START - units);
1136 seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | "
1137 "%14lu %4lu %4lu\n", start, *unitp, end, *unitp,
1138 (i == LL_HIST_MAX - 1) ? '+' : ' ',
1139 r, pct(r, read_tot), pct(read_cum, read_tot),
1140 w, pct(w, write_tot), pct(write_cum, write_tot));
1141 start = end;
1142 if (start == 1<<10) {
1143 start = 1;
1144 units += 10;
1145 unitp++;
1146 }
1147 if (read_cum == read_tot && write_cum == write_tot)
1148 break;
1149 }
1150}
1151
1152static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v)
1153{
1154 struct timeval now;
1155 struct ll_sb_info *sbi = seq->private;
1156 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1157 int k;
1158
1159 do_gettimeofday(&now);
1160
1161 if (!sbi->ll_rw_stats_on) {
1162 seq_printf(seq, "disabled\n"
1163 "write anything in this file to activate, "
1164 "then 0 or \"[D/d]isabled\" to deactivate\n");
1165 return 0;
1166 }
1167 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
996adff8 1168 now.tv_sec, (unsigned long)now.tv_usec);
d7e09d03
PT		 1169 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1170 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1171 "extents", "calls", "%", "cum%",
1172 "calls", "%", "cum%");
1173 spin_lock(&sbi->ll_pp_extent_lock);
1174 for (k = 0; k < LL_PROCESS_HIST_MAX; k++) {
1175 if (io_extents->pp_extents[k].pid != 0) {
1176 seq_printf(seq, "\nPID: %d\n",
1177 io_extents->pp_extents[k].pid);
1178 ll_display_extents_info(io_extents, seq, k);
1179 }
1180 }
1181 spin_unlock(&sbi->ll_pp_extent_lock);
1182 return 0;
1183}
1184
1185static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file,
a1e7e2d4
OD		 1186 const char __user *buf,
1187 size_t len,
d7e09d03
PT		 1188 loff_t *off)
1189{
1190 struct seq_file *seq = file->private_data;
1191 struct ll_sb_info *sbi = seq->private;
1192 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1193 int i;
1194 int value = 1, rc = 0;
1195
a1e7e2d4
OD		 1196 if (len == 0)
1197 return -EINVAL;
1198
d7e09d03 1199 rc = lprocfs_write_helper(buf, len, &value);
a1e7e2d4
OD		 1200 if (rc < 0 && len < 16) {
1201 char kernbuf[16];
1202
1203 if (copy_from_user(kernbuf, buf, len))
1204 return -EFAULT;
1205 kernbuf[len] = 0;
1206
1207 if (kernbuf[len - 1] == '\n')
1208 kernbuf[len - 1] = 0;
1209
1210 if (strcmp(kernbuf, "disabled") == 0 ||
1211 strcmp(kernbuf, "Disabled") == 0)
1212 value = 0;
1213 }
d7e09d03
PT		 1214
1215 if (value == 0)
1216 sbi->ll_rw_stats_on = 0;
1217 else
1218 sbi->ll_rw_stats_on = 1;
1219
1220 spin_lock(&sbi->ll_pp_extent_lock);
1221 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1222 io_extents->pp_extents[i].pid = 0;
1223 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1224 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1225 }
1226 spin_unlock(&sbi->ll_pp_extent_lock);
1227 return len;
1228}
1229
1230LPROC_SEQ_FOPS(ll_rw_extents_stats_pp);
1231
1232static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v)
1233{
1234 struct timeval now;
1235 struct ll_sb_info *sbi = seq->private;
1236 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1237
1238 do_gettimeofday(&now);
1239
1240 if (!sbi->ll_rw_stats_on) {
1241 seq_printf(seq, "disabled\n"
1242 "write anything in this file to activate, "
1243 "then 0 or \"[D/d]isabled\" to deactivate\n");
1244 return 0;
1245 }
1246 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
996adff8 1247 now.tv_sec, (unsigned long)now.tv_usec);
d7e09d03
PT		 1248
1249 seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write");
1250 seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n",
1251 "extents", "calls", "%", "cum%",
1252 "calls", "%", "cum%");
1253 spin_lock(&sbi->ll_lock);
1254 ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX);
1255 spin_unlock(&sbi->ll_lock);
1256
1257 return 0;
1258}
1259
a1e7e2d4
OD		 1260static ssize_t ll_rw_extents_stats_seq_write(struct file *file,
1261 const char __user *buf,
1262 size_t len, loff_t *off)
d7e09d03
PT		 1263{
1264 struct seq_file *seq = file->private_data;
1265 struct ll_sb_info *sbi = seq->private;
1266 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1267 int i;
1268 int value = 1, rc = 0;
1269
a1e7e2d4
OD		 1270 if (len == 0)
1271 return -EINVAL;
1272
d7e09d03 1273 rc = lprocfs_write_helper(buf, len, &value);
a1e7e2d4
OD		 1274 if (rc < 0 && len < 16) {
1275 char kernbuf[16];
1276
1277 if (copy_from_user(kernbuf, buf, len))
1278 return -EFAULT;
1279 kernbuf[len] = 0;
1280
1281 if (kernbuf[len - 1] == '\n')
1282 kernbuf[len - 1] = 0;
1283
1284 if (strcmp(kernbuf, "disabled") == 0 ||
1285 strcmp(kernbuf, "Disabled") == 0)
1286 value = 0;
1287 }
d7e09d03
PT		 1288
1289 if (value == 0)
1290 sbi->ll_rw_stats_on = 0;
1291 else
1292 sbi->ll_rw_stats_on = 1;
a1e7e2d4 1293
d7e09d03
PT		 1294 spin_lock(&sbi->ll_pp_extent_lock);
1295 for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
1296 io_extents->pp_extents[i].pid = 0;
1297 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist);
1298 lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist);
1299 }
1300 spin_unlock(&sbi->ll_pp_extent_lock);
1301
1302 return len;
1303}
d7e09d03
PT		 1304LPROC_SEQ_FOPS(ll_rw_extents_stats);
1305
1306void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid,
1307 struct ll_file_data *file, loff_t pos,
1308 size_t count, int rw)
1309{
1310 int i, cur = -1;
1311 struct ll_rw_process_info *process;
1312 struct ll_rw_process_info *offset;
1313 int *off_count = &sbi->ll_rw_offset_entry_count;
1314 int *process_count = &sbi->ll_offset_process_count;
1315 struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info;
1316
a58a38ac 1317 if (!sbi->ll_rw_stats_on)
d7e09d03
PT		 1318 return;
1319 process = sbi->ll_rw_process_info;
1320 offset = sbi->ll_rw_offset_info;
1321
1322 spin_lock(&sbi->ll_pp_extent_lock);
1323 /* Extent statistics */
a58a38ac
GD		 1324 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1325 if (io_extents->pp_extents[i].pid == pid) {
d7e09d03
PT		 1326 cur = i;
1327 break;
1328 }
1329 }
1330
1331 if (cur == -1) {
1332 /* new process */
1333 sbi->ll_extent_process_count =
1334 (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX;
1335 cur = sbi->ll_extent_process_count;
1336 io_extents->pp_extents[cur].pid = pid;
1337 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist);
1338 lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist);
1339 }
1340
1341 for(i = 0; (count >= (1 << LL_HIST_START << i)) &&
1342 (i < (LL_HIST_MAX - 1)); i++);
1343 if (rw == 0) {
1344 io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++;
1345 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++;
1346 } else {
1347 io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++;
1348 io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++;
1349 }
1350 spin_unlock(&sbi->ll_pp_extent_lock);
1351
1352 spin_lock(&sbi->ll_process_lock);
1353 /* Offset statistics */
1354 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
1355 if (process[i].rw_pid == pid) {
1356 if (process[i].rw_last_file != file) {
1357 process[i].rw_range_start = pos;
1358 process[i].rw_last_file_pos = pos + count;
1359 process[i].rw_smallest_extent = count;
1360 process[i].rw_largest_extent = count;
1361 process[i].rw_offset = 0;
1362 process[i].rw_last_file = file;
1363 spin_unlock(&sbi->ll_process_lock);
1364 return;
1365 }
1366 if (process[i].rw_last_file_pos != pos) {
1367 *off_count =
1368 (*off_count + 1) % LL_OFFSET_HIST_MAX;
1369 offset[*off_count].rw_op = process[i].rw_op;
1370 offset[*off_count].rw_pid = pid;
1371 offset[*off_count].rw_range_start =
1372 process[i].rw_range_start;
1373 offset[*off_count].rw_range_end =
1374 process[i].rw_last_file_pos;
1375 offset[*off_count].rw_smallest_extent =
1376 process[i].rw_smallest_extent;
1377 offset[*off_count].rw_largest_extent =
1378 process[i].rw_largest_extent;
1379 offset[*off_count].rw_offset =
1380 process[i].rw_offset;
1381 process[i].rw_op = rw;
1382 process[i].rw_range_start = pos;
1383 process[i].rw_smallest_extent = count;
1384 process[i].rw_largest_extent = count;
1385 process[i].rw_offset = pos -
1386 process[i].rw_last_file_pos;
1387 }
a58a38ac 1388 if (process[i].rw_smallest_extent > count)
d7e09d03 1389 process[i].rw_smallest_extent = count;
a58a38ac 1390 if (process[i].rw_largest_extent < count)
d7e09d03
PT		 1391 process[i].rw_largest_extent = count;
1392 process[i].rw_last_file_pos = pos + count;
1393 spin_unlock(&sbi->ll_process_lock);
1394 return;
1395 }
1396 }
1397 *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX;
1398 process[*process_count].rw_pid = pid;
1399 process[*process_count].rw_op = rw;
1400 process[*process_count].rw_range_start = pos;
1401 process[*process_count].rw_last_file_pos = pos + count;
1402 process[*process_count].rw_smallest_extent = count;
1403 process[*process_count].rw_largest_extent = count;
1404 process[*process_count].rw_offset = 0;
1405 process[*process_count].rw_last_file = file;
1406 spin_unlock(&sbi->ll_process_lock);
1407}
1408
1409static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
1410{
1411 struct timeval now;
1412 struct ll_sb_info *sbi = seq->private;
1413 struct ll_rw_process_info *offset = sbi->ll_rw_offset_info;
1414 struct ll_rw_process_info *process = sbi->ll_rw_process_info;
1415 int i;
1416
1417 do_gettimeofday(&now);
1418
1419 if (!sbi->ll_rw_stats_on) {
1420 seq_printf(seq, "disabled\n"
1421 "write anything in this file to activate, "
1422 "then 0 or \"[D/d]isabled\" to deactivate\n");
1423 return 0;
1424 }
1425 spin_lock(&sbi->ll_process_lock);
1426
1427 seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
996adff8 1428 now.tv_sec, (unsigned long)now.tv_usec);
d7e09d03
PT		 1429 seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n",
1430 "R/W", "PID", "RANGE START", "RANGE END",
1431 "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET");
1432 /* We stored the discontiguous offsets here; print them first */
a58a38ac 1433 for (i = 0; i < LL_OFFSET_HIST_MAX; i++) {
d7e09d03 1434 if (offset[i].rw_pid != 0)
4f37bc04
JH		 1435 seq_printf(seq,
1436 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1437 offset[i].rw_op == READ ? 'R' : 'W',
d7e09d03
PT		 1438 offset[i].rw_pid,
1439 offset[i].rw_range_start,
1440 offset[i].rw_range_end,
1441 (unsigned long)offset[i].rw_smallest_extent,
1442 (unsigned long)offset[i].rw_largest_extent,
1443 offset[i].rw_offset);
1444 }
1445 /* Then print the current offsets for each process */
a58a38ac 1446 for (i = 0; i < LL_PROCESS_HIST_MAX; i++) {
d7e09d03 1447 if (process[i].rw_pid != 0)
4f37bc04
JH		 1448 seq_printf(seq,
1449 "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu",
1450 process[i].rw_op == READ ? 'R' : 'W',
d7e09d03
PT		 1451 process[i].rw_pid,
1452 process[i].rw_range_start,
1453 process[i].rw_last_file_pos,
1454 (unsigned long)process[i].rw_smallest_extent,
1455 (unsigned long)process[i].rw_largest_extent,
1456 process[i].rw_offset);
1457 }
1458 spin_unlock(&sbi->ll_process_lock);
1459
1460 return 0;
1461}
1462
a1e7e2d4
OD		 1463static ssize_t ll_rw_offset_stats_seq_write(struct file *file,
1464 const char __user *buf,
1465 size_t len, loff_t *off)
d7e09d03
PT		 1466{
1467 struct seq_file *seq = file->private_data;
1468 struct ll_sb_info *sbi = seq->private;
1469 struct ll_rw_process_info *process_info = sbi->ll_rw_process_info;
1470 struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info;
1471 int value = 1, rc = 0;
1472
a1e7e2d4
OD		 1473 if (len == 0)
1474 return -EINVAL;
1475
d7e09d03
PT		 1476 rc = lprocfs_write_helper(buf, len, &value);
1477
a1e7e2d4
OD		 1478 if (rc < 0 && len < 16) {
1479 char kernbuf[16];
1480
1481 if (copy_from_user(kernbuf, buf, len))
1482 return -EFAULT;
1483 kernbuf[len] = 0;
1484
1485 if (kernbuf[len - 1] == '\n')
1486 kernbuf[len - 1] = 0;
1487
1488 if (strcmp(kernbuf, "disabled") == 0 ||
1489 strcmp(kernbuf, "Disabled") == 0)
1490 value = 0;
1491 }
d7e09d03
PT		 1492
1493 if (value == 0)
1494 sbi->ll_rw_stats_on = 0;
1495 else
1496 sbi->ll_rw_stats_on = 1;
1497
1498 spin_lock(&sbi->ll_process_lock);
1499 sbi->ll_offset_process_count = 0;
1500 sbi->ll_rw_offset_entry_count = 0;
1501 memset(process_info, 0, sizeof(struct ll_rw_process_info) *
1502 LL_PROCESS_HIST_MAX);
1503 memset(offset_info, 0, sizeof(struct ll_rw_process_info) *
1504 LL_OFFSET_HIST_MAX);
1505 spin_unlock(&sbi->ll_process_lock);
1506
1507 return len;
1508}
1509
1510LPROC_SEQ_FOPS(ll_rw_offset_stats);
1511
1512void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
1513{
1514 lvars->module_vars = NULL;
1515 lvars->obd_vars = lprocfs_llite_obd_vars;
1516}
Linux 6.x block layer and io_uring tree(s)