projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'xfs-4.18-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
[linux-2.6-block.git] / drivers / lightnvm / pblk-sysfs.c
CommitLineData
a4bd217b
JG		 1/*
2 * Copyright (C) 2016 CNEX Labs
3 * Initial release: Javier Gonzalez <javier@cnexlabs.com>
4 * Matias Bjorling <matias@cnexlabs.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 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 for more details.
14 *
15 * Implementation of a physical block-device target for Open-channel SSDs.
16 *
17 * pblk-sysfs.c - pblk's sysfs
18 *
19 */
20
21#include "pblk.h"
22
23static ssize_t pblk_sysfs_luns_show(struct pblk *pblk, char *page)
24{
25 struct nvm_tgt_dev *dev = pblk->dev;
26 struct nvm_geo *geo = &dev->geo;
27 struct pblk_lun *rlun;
28 ssize_t sz = 0;
29 int i;
30
fae7fae4 31 for (i = 0; i < geo->all_luns; i++) {
a4bd217b
JG		 32 int active = 1;
33
34 rlun = &pblk->luns[i];
35 if (!down_trylock(&rlun->wr_sem)) {
36 active = 0;
37 up(&rlun->wr_sem);
38 }
39 sz += snprintf(page + sz, PAGE_SIZE - sz,
40 "pblk: pos:%d, ch:%d, lun:%d - %d\n",
41 i,
69471513
JG		 42 rlun->bppa.a.ch,
43 rlun->bppa.a.lun,
a4bd217b
JG		 44 active);
45 }
46
47 return sz;
48}
49
50static ssize_t pblk_sysfs_rate_limiter(struct pblk *pblk, char *page)
51{
a7689938 52 int free_blocks, free_user_blocks, total_blocks;
a4bd217b 53 int rb_user_max, rb_user_cnt;
b20ba1bc 54 int rb_gc_max, rb_gc_cnt, rb_budget, rb_state;
a4bd217b 55
a7689938
JG		 56 free_blocks = pblk_rl_nr_free_blks(&pblk->rl);
57 free_user_blocks = pblk_rl_nr_user_free_blks(&pblk->rl);
a4bd217b
JG		 58 rb_user_max = pblk->rl.rb_user_max;
59 rb_user_cnt = atomic_read(&pblk->rl.rb_user_cnt);
60 rb_gc_max = pblk->rl.rb_gc_max;
a4bd217b
JG		 61 rb_gc_cnt = atomic_read(&pblk->rl.rb_gc_cnt);
62 rb_budget = pblk->rl.rb_budget;
63 rb_state = pblk->rl.rb_state;
64
b20ba1bc 65 total_blocks = pblk->rl.total_blocks;
a4bd217b
JG		 66
67 return snprintf(page, PAGE_SIZE,
a7689938 68 "u:%u/%u,gc:%u/%u(%u)(stop:<%u,full:>%u,free:%d/%d/%d)-%d\n",
a4bd217b
JG		 69 rb_user_cnt,
70 rb_user_max,
71 rb_gc_cnt,
72 rb_gc_max,
a4bd217b
JG		 73 rb_state,
74 rb_budget,
a4bd217b
JG		 75 pblk->rl.high,
76 free_blocks,
a7689938 77 free_user_blocks,
a4bd217b
JG		 78 total_blocks,
79 READ_ONCE(pblk->rl.rb_user_active));
80}
81
82static ssize_t pblk_sysfs_gc_state_show(struct pblk *pblk, char *page)
83{
84 int gc_enabled, gc_active;
85
86 pblk_gc_sysfs_state_show(pblk, &gc_enabled, &gc_active);
87 return snprintf(page, PAGE_SIZE, "gc_enabled=%d, gc_active=%d\n",
88 gc_enabled, gc_active);
89}
90
91static ssize_t pblk_sysfs_stats(struct pblk *pblk, char *page)
92{
93 ssize_t sz;
94
95 sz = snprintf(page, PAGE_SIZE,
96 "read_failed=%lu, read_high_ecc=%lu, read_empty=%lu, read_failed_gc=%lu, write_failed=%lu, erase_failed=%lu\n",
97 atomic_long_read(&pblk->read_failed),
98 atomic_long_read(&pblk->read_high_ecc),
99 atomic_long_read(&pblk->read_empty),
100 atomic_long_read(&pblk->read_failed_gc),
101 atomic_long_read(&pblk->write_failed),
102 atomic_long_read(&pblk->erase_failed));
103
104 return sz;
105}
106
107static ssize_t pblk_sysfs_write_buffer(struct pblk *pblk, char *page)
108{
109 return pblk_rb_sysfs(&pblk->rwb, page);
110}
111
112static ssize_t pblk_sysfs_ppaf(struct pblk *pblk, char *page)
113{
114 struct nvm_tgt_dev *dev = pblk->dev;
115 struct nvm_geo *geo = &dev->geo;
116 ssize_t sz = 0;
117
3b2a3ad1
JG		 118 if (geo->version == NVM_OCSSD_SPEC_12) {
119 struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->addrf;
120 struct nvm_addrf_12 *gppaf = (struct nvm_addrf_12 *)&geo->addrf;
e46f4e48 121
3b2a3ad1
JG		 122 sz = snprintf(page, PAGE_SIZE,
123 "g:(b:%d)blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
bb845ae4 124 pblk->addrf_len,
e46f4e48
JG		 125 ppaf->blk_offset, ppaf->blk_len,
126 ppaf->pg_offset, ppaf->pg_len,
127 ppaf->lun_offset, ppaf->lun_len,
128 ppaf->ch_offset, ppaf->ch_len,
129 ppaf->pln_offset, ppaf->pln_len,
a40afad9 130 ppaf->sec_offset, ppaf->sec_len);
a4bd217b 131
3b2a3ad1
JG		 132 sz += snprintf(page + sz, PAGE_SIZE - sz,
133 "d:blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
134 gppaf->blk_offset, gppaf->blk_len,
135 gppaf->pg_offset, gppaf->pg_len,
136 gppaf->lun_offset, gppaf->lun_len,
137 gppaf->ch_offset, gppaf->ch_len,
138 gppaf->pln_offset, gppaf->pln_len,
139 gppaf->sec_offset, gppaf->sec_len);
140 } else {
141 struct nvm_addrf *ppaf = &pblk->addrf;
142 struct nvm_addrf *gppaf = &geo->addrf;
143
144 sz = snprintf(page, PAGE_SIZE,
145 "pblk:(s:%d)ch:%d/%d,lun:%d/%d,chk:%d/%d/sec:%d/%d\n",
146 pblk->addrf_len,
147 ppaf->ch_offset, ppaf->ch_len,
148 ppaf->lun_offset, ppaf->lun_len,
149 ppaf->chk_offset, ppaf->chk_len,
150 ppaf->sec_offset, ppaf->sec_len);
151
152 sz += snprintf(page + sz, PAGE_SIZE - sz,
153 "device:ch:%d/%d,lun:%d/%d,chk:%d/%d,sec:%d/%d\n",
154 gppaf->ch_offset, gppaf->ch_len,
155 gppaf->lun_offset, gppaf->lun_len,
156 gppaf->chk_offset, gppaf->chk_len,
157 gppaf->sec_offset, gppaf->sec_len);
158 }
a4bd217b
JG		 159
160 return sz;
161}
162
163static ssize_t pblk_sysfs_lines(struct pblk *pblk, char *page)
164{
165 struct nvm_tgt_dev *dev = pblk->dev;
166 struct nvm_geo *geo = &dev->geo;
167 struct pblk_line_meta *lm = &pblk->lm;
168 struct pblk_line_mgmt *l_mg = &pblk->l_mg;
169 struct pblk_line *line;
170 ssize_t sz = 0;
171 int nr_free_lines;
172 int cur_data, cur_log;
dd2a4343 173 int free_line_cnt = 0, closed_line_cnt = 0, emeta_line_cnt = 0;
a4bd217b
JG		 174 int d_line_cnt = 0, l_line_cnt = 0;
175 int gc_full = 0, gc_high = 0, gc_mid = 0, gc_low = 0, gc_empty = 0;
48b8d208
HH		 176 int gc_werr = 0;
177
fd1b0158 178 int bad = 0, cor = 0;
0880a9aa 179 int msecs = 0, cur_sec = 0, vsc = 0, sec_in_line = 0;
a4bd217b
JG		 180 int map_weight = 0, meta_weight = 0;
181
182 spin_lock(&l_mg->free_lock);
183 cur_data = (l_mg->data_line) ? l_mg->data_line->id : -1;
184 cur_log = (l_mg->log_line) ? l_mg->log_line->id : -1;
185 nr_free_lines = l_mg->nr_free_lines;
186
187 list_for_each_entry(line, &l_mg->free_list, list)
188 free_line_cnt++;
189 spin_unlock(&l_mg->free_lock);
190
dd2a4343
JG		 191 spin_lock(&l_mg->close_lock);
192 list_for_each_entry(line, &l_mg->emeta_list, list)
193 emeta_line_cnt++;
194 spin_unlock(&l_mg->close_lock);
195
a4bd217b
JG		 196 spin_lock(&l_mg->gc_lock);
197 list_for_each_entry(line, &l_mg->gc_full_list, list) {
198 if (line->type == PBLK_LINETYPE_DATA)
199 d_line_cnt++;
200 else if (line->type == PBLK_LINETYPE_LOG)
201 l_line_cnt++;
202 closed_line_cnt++;
203 gc_full++;
204 }
205
206 list_for_each_entry(line, &l_mg->gc_high_list, list) {
207 if (line->type == PBLK_LINETYPE_DATA)
208 d_line_cnt++;
209 else if (line->type == PBLK_LINETYPE_LOG)
210 l_line_cnt++;
211 closed_line_cnt++;
212 gc_high++;
213 }
214
215 list_for_each_entry(line, &l_mg->gc_mid_list, list) {
216 if (line->type == PBLK_LINETYPE_DATA)
217 d_line_cnt++;
218 else if (line->type == PBLK_LINETYPE_LOG)
219 l_line_cnt++;
220 closed_line_cnt++;
221 gc_mid++;
222 }
223
224 list_for_each_entry(line, &l_mg->gc_low_list, list) {
225 if (line->type == PBLK_LINETYPE_DATA)
226 d_line_cnt++;
227 else if (line->type == PBLK_LINETYPE_LOG)
228 l_line_cnt++;
229 closed_line_cnt++;
230 gc_low++;
231 }
232
233 list_for_each_entry(line, &l_mg->gc_empty_list, list) {
234 if (line->type == PBLK_LINETYPE_DATA)
235 d_line_cnt++;
236 else if (line->type == PBLK_LINETYPE_LOG)
237 l_line_cnt++;
238 closed_line_cnt++;
239 gc_empty++;
240 }
241
48b8d208
HH		 242 list_for_each_entry(line, &l_mg->gc_werr_list, list) {
243 if (line->type == PBLK_LINETYPE_DATA)
244 d_line_cnt++;
245 else if (line->type == PBLK_LINETYPE_LOG)
246 l_line_cnt++;
247 closed_line_cnt++;
248 gc_werr++;
249 }
250
a4bd217b
JG		 251 list_for_each_entry(line, &l_mg->bad_list, list)
252 bad++;
253 list_for_each_entry(line, &l_mg->corrupt_list, list)
254 cor++;
255 spin_unlock(&l_mg->gc_lock);
256
257 spin_lock(&l_mg->free_lock);
258 if (l_mg->data_line) {
259 cur_sec = l_mg->data_line->cur_sec;
260 msecs = l_mg->data_line->left_msecs;
dd2a4343 261 vsc = le32_to_cpu(*l_mg->data_line->vsc);
a4bd217b
JG		 262 sec_in_line = l_mg->data_line->sec_in_line;
263 meta_weight = bitmap_weight(&l_mg->meta_bitmap,
264 PBLK_DATA_LINES);
265 map_weight = bitmap_weight(l_mg->data_line->map_bitmap,
266 lm->sec_per_line);
267 }
268 spin_unlock(&l_mg->free_lock);
269
270 if (nr_free_lines != free_line_cnt)
b20ba1bc
JG		 271 pr_err("pblk: corrupted free line list:%d/%d\n",
272 nr_free_lines, free_line_cnt);
a4bd217b
JG		 273
274 sz = snprintf(page, PAGE_SIZE - sz,
275 "line: nluns:%d, nblks:%d, nsecs:%d\n",
fae7fae4 276 geo->all_luns, lm->blk_per_line, lm->sec_per_line);
a4bd217b
JG		 277
278 sz += snprintf(page + sz, PAGE_SIZE - sz,
588726d3 279 "lines:d:%d,l:%d-f:%d,m:%d/%d,c:%d,b:%d,co:%d(d:%d,l:%d)t:%d\n",
a4bd217b 280 cur_data, cur_log,
588726d3
JG		 281 nr_free_lines,
282 emeta_line_cnt, meta_weight,
a4bd217b 283 closed_line_cnt,
dd2a4343 284 bad, cor,
a4bd217b
JG		 285 d_line_cnt, l_line_cnt,
286 l_mg->nr_lines);
287
288 sz += snprintf(page + sz, PAGE_SIZE - sz,
48b8d208
HH		 289 "GC: full:%d, high:%d, mid:%d, low:%d, empty:%d, werr: %d, queue:%d\n",
290 gc_full, gc_high, gc_mid, gc_low, gc_empty, gc_werr,
d6b992f7 291 atomic_read(&pblk->gc.read_inflight_gc));
a4bd217b
JG		 292
293 sz += snprintf(page + sz, PAGE_SIZE - sz,
0880a9aa
JG		 294 "data (%d) cur:%d, left:%d, vsc:%d, s:%d, map:%d/%d (%d)\n",
295 cur_data, cur_sec, msecs, vsc, sec_in_line,
588726d3
JG		 296 map_weight, lm->sec_per_line,
297 atomic_read(&pblk->inflight_io));
a4bd217b
JG		 298
299 return sz;
300}
301
302static ssize_t pblk_sysfs_lines_info(struct pblk *pblk, char *page)
303{
304 struct nvm_tgt_dev *dev = pblk->dev;
305 struct nvm_geo *geo = &dev->geo;
306 struct pblk_line_meta *lm = &pblk->lm;
307 ssize_t sz = 0;
308
309 sz = snprintf(page, PAGE_SIZE - sz,
310 "smeta - len:%d, secs:%d\n",
311 lm->smeta_len, lm->smeta_sec);
312 sz += snprintf(page + sz, PAGE_SIZE - sz,
313 "emeta - len:%d, sec:%d, bb_start:%d\n",
dd2a4343 314 lm->emeta_len[0], lm->emeta_sec[0],
a4bd217b
JG		 315 lm->emeta_bb);
316 sz += snprintf(page + sz, PAGE_SIZE - sz,
317 "bitmap lengths: sec:%d, blk:%d, lun:%d\n",
318 lm->sec_bitmap_len,
319 lm->blk_bitmap_len,
320 lm->lun_bitmap_len);
321 sz += snprintf(page + sz, PAGE_SIZE - sz,
322 "blk_line:%d, sec_line:%d, sec_blk:%d\n",
323 lm->blk_per_line,
324 lm->sec_per_line,
e46f4e48 325 geo->clba);
a4bd217b
JG		 326
327 return sz;
328}
329
c2e9f5d4
JG		 330static ssize_t pblk_sysfs_get_sec_per_write(struct pblk *pblk, char *page)
331{
332 return snprintf(page, PAGE_SIZE, "%d\n", pblk->sec_per_write);
333}
334
76758390
HH		 335static ssize_t pblk_get_write_amp(u64 user, u64 gc, u64 pad,
336 char *page)
337{
338 int sz;
339
340
341 sz = snprintf(page, PAGE_SIZE,
342 "user:%lld gc:%lld pad:%lld WA:",
343 user, gc, pad);
344
345 if (!user) {
346 sz += snprintf(page + sz, PAGE_SIZE - sz, "NaN\n");
347 } else {
348 u64 wa_int;
349 u32 wa_frac;
350
351 wa_int = (user + gc + pad) * 100000;
352 wa_int = div_u64(wa_int, user);
353 wa_int = div_u64_rem(wa_int, 100000, &wa_frac);
354
355 sz += snprintf(page + sz, PAGE_SIZE - sz, "%llu.%05u\n",
356 wa_int, wa_frac);
357 }
358
359 return sz;
360}
361
362static ssize_t pblk_sysfs_get_write_amp_mileage(struct pblk *pblk, char *page)
363{
364 return pblk_get_write_amp(atomic64_read(&pblk->user_wa),
365 atomic64_read(&pblk->gc_wa), atomic64_read(&pblk->pad_wa),
366 page);
367}
368
369static ssize_t pblk_sysfs_get_write_amp_trip(struct pblk *pblk, char *page)
370{
371 return pblk_get_write_amp(
372 atomic64_read(&pblk->user_wa) - pblk->user_rst_wa,
373 atomic64_read(&pblk->gc_wa) - pblk->gc_rst_wa,
374 atomic64_read(&pblk->pad_wa) - pblk->pad_rst_wa, page);
375}
376
5d149bfa
HH		 377static long long bucket_percentage(unsigned long long bucket,
378 unsigned long long total)
379{
380 int p = bucket * 100;
381
382 p = div_u64(p, total);
383
384 return p;
385}
386
387static ssize_t pblk_sysfs_get_padding_dist(struct pblk *pblk, char *page)
388{
389 int sz = 0;
390 unsigned long long total;
391 unsigned long long total_buckets = 0;
392 int buckets = pblk->min_write_pgs - 1;
393 int i;
394
395 total = atomic64_read(&pblk->nr_flush) - pblk->nr_flush_rst;
396 if (!total) {
397 for (i = 0; i < (buckets + 1); i++)
398 sz += snprintf(page + sz, PAGE_SIZE - sz,
399 "%d:0 ", i);
400 sz += snprintf(page + sz, PAGE_SIZE - sz, "\n");
401
402 return sz;
403 }
404
405 for (i = 0; i < buckets; i++)
406 total_buckets += atomic64_read(&pblk->pad_dist[i]);
407
408 sz += snprintf(page + sz, PAGE_SIZE - sz, "0:%lld%% ",
409 bucket_percentage(total - total_buckets, total));
410
411 for (i = 0; i < buckets; i++) {
412 unsigned long long p;
413
414 p = bucket_percentage(atomic64_read(&pblk->pad_dist[i]),
415 total);
416 sz += snprintf(page + sz, PAGE_SIZE - sz, "%d:%lld%% ",
417 i + 1, p);
418 }
419 sz += snprintf(page + sz, PAGE_SIZE - sz, "\n");
420
421 return sz;
422}
423
a4bd217b
JG		 424#ifdef CONFIG_NVM_DEBUG
425static ssize_t pblk_sysfs_stats_debug(struct pblk *pblk, char *page)
426{
427 return snprintf(page, PAGE_SIZE,
5d149bfa 428 "%lu\t%lu\t%ld\t%llu\t%ld\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\n",
a4bd217b
JG		 429 atomic_long_read(&pblk->inflight_writes),
430 atomic_long_read(&pblk->inflight_reads),
431 atomic_long_read(&pblk->req_writes),
5d149bfa 432 (u64)atomic64_read(&pblk->nr_flush),
a4bd217b
JG		 433 atomic_long_read(&pblk->padded_writes),
434 atomic_long_read(&pblk->padded_wb),
435 atomic_long_read(&pblk->sub_writes),
436 atomic_long_read(&pblk->sync_writes),
a4bd217b
JG		 437 atomic_long_read(&pblk->recov_writes),
438 atomic_long_read(&pblk->recov_gc_writes),
439 atomic_long_read(&pblk->recov_gc_reads),
db7ada33 440 atomic_long_read(&pblk->cache_reads),
a4bd217b
JG		 441 atomic_long_read(&pblk->sync_reads));
442}
443#endif
444
a4bd217b
JG		 445static ssize_t pblk_sysfs_gc_force(struct pblk *pblk, const char *page,
446 size_t len)
447{
448 size_t c_len;
653cbb84 449 int force;
a4bd217b
JG		 450
451 c_len = strcspn(page, "\n");
452 if (c_len >= len)
453 return -EINVAL;
454
455 if (kstrtouint(page, 0, &force))
456 return -EINVAL;
457
653cbb84 458 pblk_gc_sysfs_force(pblk, force);
a4bd217b
JG		 459
460 return len;
461}
462
c2e9f5d4
JG		 463static ssize_t pblk_sysfs_set_sec_per_write(struct pblk *pblk,
464 const char *page, size_t len)
465{
466 size_t c_len;
467 int sec_per_write;
468
469 c_len = strcspn(page, "\n");
470 if (c_len >= len)
471 return -EINVAL;
472
473 if (kstrtouint(page, 0, &sec_per_write))
474 return -EINVAL;
475
476 if (sec_per_write < pblk->min_write_pgs
477 || sec_per_write > pblk->max_write_pgs
478 || sec_per_write % pblk->min_write_pgs != 0)
479 return -EINVAL;
480
481 pblk_set_sec_per_write(pblk, sec_per_write);
482
483 return len;
484}
485
76758390
HH		 486static ssize_t pblk_sysfs_set_write_amp_trip(struct pblk *pblk,
487 const char *page, size_t len)
488{
489 size_t c_len;
490 int reset_value;
491
492 c_len = strcspn(page, "\n");
493 if (c_len >= len)
494 return -EINVAL;
495
496 if (kstrtouint(page, 0, &reset_value))
497 return -EINVAL;
498
499 if (reset_value != 0)
500 return -EINVAL;
501
502 pblk->user_rst_wa = atomic64_read(&pblk->user_wa);
503 pblk->pad_rst_wa = atomic64_read(&pblk->pad_wa);
504 pblk->gc_rst_wa = atomic64_read(&pblk->gc_wa);
505
506 return len;
507}
508
509
5d149bfa
HH		 510static ssize_t pblk_sysfs_set_padding_dist(struct pblk *pblk,
511 const char *page, size_t len)
512{
513 size_t c_len;
514 int reset_value;
515 int buckets = pblk->min_write_pgs - 1;
516 int i;
517
518 c_len = strcspn(page, "\n");
519 if (c_len >= len)
520 return -EINVAL;
521
522 if (kstrtouint(page, 0, &reset_value))
523 return -EINVAL;
524
525 if (reset_value != 0)
526 return -EINVAL;
527
528 for (i = 0; i < buckets; i++)
529 atomic64_set(&pblk->pad_dist[i], 0);
530
531 pblk->nr_flush_rst = atomic64_read(&pblk->nr_flush);
532
533 return len;
534}
535
a4bd217b
JG		 536static struct attribute sys_write_luns = {
537 .name = "write_luns",
538 .mode = 0444,
539};
540
541static struct attribute sys_rate_limiter_attr = {
542 .name = "rate_limiter",
543 .mode = 0444,
544};
545
546static struct attribute sys_gc_state = {
547 .name = "gc_state",
548 .mode = 0444,
549};
550
551static struct attribute sys_errors_attr = {
552 .name = "errors",
553 .mode = 0444,
554};
555
556static struct attribute sys_rb_attr = {
557 .name = "write_buffer",
558 .mode = 0444,
559};
560
561static struct attribute sys_stats_ppaf_attr = {
562 .name = "ppa_format",
563 .mode = 0444,
564};
565
566static struct attribute sys_lines_attr = {
567 .name = "lines",
568 .mode = 0444,
569};
570
571static struct attribute sys_lines_info_attr = {
572 .name = "lines_info",
573 .mode = 0444,
574};
575
576static struct attribute sys_gc_force = {
577 .name = "gc_force",
578 .mode = 0200,
579};
580
c2e9f5d4
JG		 581static struct attribute sys_max_sec_per_write = {
582 .name = "max_sec_per_write",
583 .mode = 0644,
584};
585
76758390
HH		 586static struct attribute sys_write_amp_mileage = {
587 .name = "write_amp_mileage",
588 .mode = 0444,
589};
590
591static struct attribute sys_write_amp_trip = {
592 .name = "write_amp_trip",
593 .mode = 0644,
594};
595
5d149bfa
HH		 596static struct attribute sys_padding_dist = {
597 .name = "padding_dist",
598 .mode = 0644,
599};
600
a4bd217b
JG		 601#ifdef CONFIG_NVM_DEBUG
602static struct attribute sys_stats_debug_attr = {
603 .name = "stats",
604 .mode = 0444,
605};
606#endif
607
608static struct attribute *pblk_attrs[] = {
609 &sys_write_luns,
610 &sys_rate_limiter_attr,
611 &sys_errors_attr,
612 &sys_gc_state,
613 &sys_gc_force,
c2e9f5d4 614 &sys_max_sec_per_write,
a4bd217b
JG		 615 &sys_rb_attr,
616 &sys_stats_ppaf_attr,
617 &sys_lines_attr,
618 &sys_lines_info_attr,
76758390
HH		 619 &sys_write_amp_mileage,
620 &sys_write_amp_trip,
5d149bfa 621 &sys_padding_dist,
a4bd217b
JG		 622#ifdef CONFIG_NVM_DEBUG
623 &sys_stats_debug_attr,
624#endif
625 NULL,
626};
627
628static ssize_t pblk_sysfs_show(struct kobject *kobj, struct attribute *attr,
629 char *buf)
630{
631 struct pblk *pblk = container_of(kobj, struct pblk, kobj);
632
633 if (strcmp(attr->name, "rate_limiter") == 0)
634 return pblk_sysfs_rate_limiter(pblk, buf);
635 else if (strcmp(attr->name, "write_luns") == 0)
636 return pblk_sysfs_luns_show(pblk, buf);
637 else if (strcmp(attr->name, "gc_state") == 0)
638 return pblk_sysfs_gc_state_show(pblk, buf);
639 else if (strcmp(attr->name, "errors") == 0)
640 return pblk_sysfs_stats(pblk, buf);
641 else if (strcmp(attr->name, "write_buffer") == 0)
642 return pblk_sysfs_write_buffer(pblk, buf);
643 else if (strcmp(attr->name, "ppa_format") == 0)
644 return pblk_sysfs_ppaf(pblk, buf);
645 else if (strcmp(attr->name, "lines") == 0)
646 return pblk_sysfs_lines(pblk, buf);
647 else if (strcmp(attr->name, "lines_info") == 0)
648 return pblk_sysfs_lines_info(pblk, buf);
c2e9f5d4
JG		 649 else if (strcmp(attr->name, "max_sec_per_write") == 0)
650 return pblk_sysfs_get_sec_per_write(pblk, buf);
76758390
HH		 651 else if (strcmp(attr->name, "write_amp_mileage") == 0)
652 return pblk_sysfs_get_write_amp_mileage(pblk, buf);
653 else if (strcmp(attr->name, "write_amp_trip") == 0)
654 return pblk_sysfs_get_write_amp_trip(pblk, buf);
5d149bfa
HH		 655 else if (strcmp(attr->name, "padding_dist") == 0)
656 return pblk_sysfs_get_padding_dist(pblk, buf);
a4bd217b
JG		 657#ifdef CONFIG_NVM_DEBUG
658 else if (strcmp(attr->name, "stats") == 0)
659 return pblk_sysfs_stats_debug(pblk, buf);
660#endif
661 return 0;
662}
663
664static ssize_t pblk_sysfs_store(struct kobject *kobj, struct attribute *attr,
665 const char *buf, size_t len)
666{
667 struct pblk *pblk = container_of(kobj, struct pblk, kobj);
668
b20ba1bc 669 if (strcmp(attr->name, "gc_force") == 0)
a4bd217b 670 return pblk_sysfs_gc_force(pblk, buf, len);
c2e9f5d4
JG		 671 else if (strcmp(attr->name, "max_sec_per_write") == 0)
672 return pblk_sysfs_set_sec_per_write(pblk, buf, len);
76758390
HH		 673 else if (strcmp(attr->name, "write_amp_trip") == 0)
674 return pblk_sysfs_set_write_amp_trip(pblk, buf, len);
5d149bfa
HH		 675 else if (strcmp(attr->name, "padding_dist") == 0)
676 return pblk_sysfs_set_padding_dist(pblk, buf, len);
a4bd217b
JG		 677 return 0;
678}
679
680static const struct sysfs_ops pblk_sysfs_ops = {
681 .show = pblk_sysfs_show,
682 .store = pblk_sysfs_store,
683};
684
685static struct kobj_type pblk_ktype = {
686 .sysfs_ops = &pblk_sysfs_ops,
687 .default_attrs = pblk_attrs,
688};
689
690int pblk_sysfs_init(struct gendisk *tdisk)
691{
692 struct pblk *pblk = tdisk->private_data;
693 struct device *parent_dev = disk_to_dev(pblk->disk);
694 int ret;
695
696 ret = kobject_init_and_add(&pblk->kobj, &pblk_ktype,
697 kobject_get(&parent_dev->kobj),
698 "%s", "pblk");
699 if (ret) {
700 pr_err("pblk: could not register %s/pblk\n",
701 tdisk->disk_name);
702 return ret;
703 }
704
705 kobject_uevent(&pblk->kobj, KOBJ_ADD);
706 return 0;
707}
708
709void pblk_sysfs_exit(struct gendisk *tdisk)
710{
711 struct pblk *pblk = tdisk->private_data;
712
713 kobject_uevent(&pblk->kobj, KOBJ_REMOVE);
714 kobject_del(&pblk->kobj);
715 kobject_put(&pblk->kobj);
716}
Linux 6.x block layer and io_uring tree(s)