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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * bcache sysfs interfaces
4 *
5 * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com>
6 * Copyright 2012 Google, Inc.
7 */
8
9#ifndef NO_BCACHEFS_SYSFS
10
11#include "bcachefs.h"
12#include "alloc_background.h"
13#include "alloc_foreground.h"
14#include "sysfs.h"
15#include "btree_cache.h"
16#include "btree_io.h"
17#include "btree_iter.h"
18#include "btree_key_cache.h"
19#include "btree_update.h"
20#include "btree_update_interior.h"
21#include "btree_gc.h"
22#include "buckets.h"
23#include "clock.h"
24#include "compress.h"
25#include "disk_accounting.h"
26#include "disk_groups.h"
27#include "ec.h"
28#include "inode.h"
29#include "journal.h"
30#include "journal_reclaim.h"
31#include "keylist.h"
32#include "move.h"
33#include "movinggc.h"
34#include "nocow_locking.h"
35#include "opts.h"
36#include "rebalance.h"
37#include "replicas.h"
38#include "super-io.h"
39#include "tests.h"
40
41#include <linux/blkdev.h>
42#include <linux/sort.h>
43#include <linux/sched/clock.h>
44
45#include "util.h"
46
47#define SYSFS_OPS(type) \
48const struct sysfs_ops type ## _sysfs_ops = { \
49 .show = type ## _show, \
50 .store = type ## _store \
51}
52
53#define SHOW(fn) \
54static ssize_t fn ## _to_text(struct printbuf *, \
55 struct kobject *, struct attribute *); \
56 \
57static ssize_t fn ## _show(struct kobject *kobj, struct attribute *attr,\
58 char *buf) \
59{ \
60 struct printbuf out = PRINTBUF; \
61 ssize_t ret = fn ## _to_text(&out, kobj, attr); \
62 \
63 if (out.pos && out.buf[out.pos - 1] != '\n') \
64 prt_newline(&out); \
65 \
66 if (!ret && out.allocation_failure) \
67 ret = -ENOMEM; \
68 \
69 if (!ret) { \
70 ret = min_t(size_t, out.pos, PAGE_SIZE - 1); \
71 memcpy(buf, out.buf, ret); \
72 } \
73 printbuf_exit(&out); \
74 return bch2_err_class(ret); \
75} \
76 \
77static ssize_t fn ## _to_text(struct printbuf *out, struct kobject *kobj,\
78 struct attribute *attr)
79
80#define STORE(fn) \
81static ssize_t fn ## _store_inner(struct kobject *, struct attribute *,\
82 const char *, size_t); \
83 \
84static ssize_t fn ## _store(struct kobject *kobj, struct attribute *attr,\
85 const char *buf, size_t size) \
86{ \
87 return bch2_err_class(fn##_store_inner(kobj, attr, buf, size)); \
88} \
89 \
90static ssize_t fn ## _store_inner(struct kobject *kobj, struct attribute *attr,\
91 const char *buf, size_t size)
92
93#define __sysfs_attribute(_name, _mode) \
94 static struct attribute sysfs_##_name = \
95 { .name = #_name, .mode = _mode }
96
97#define write_attribute(n) __sysfs_attribute(n, 0200)
98#define read_attribute(n) __sysfs_attribute(n, 0444)
99#define rw_attribute(n) __sysfs_attribute(n, 0644)
100
101#define sysfs_printf(file, fmt, ...) \
102do { \
103 if (attr == &sysfs_ ## file) \
104 prt_printf(out, fmt "\n", __VA_ARGS__); \
105} while (0)
106
107#define sysfs_print(file, var) \
108do { \
109 if (attr == &sysfs_ ## file) \
110 snprint(out, var); \
111} while (0)
112
113#define sysfs_hprint(file, val) \
114do { \
115 if (attr == &sysfs_ ## file) \
116 prt_human_readable_s64(out, val); \
117} while (0)
118
119#define sysfs_strtoul(file, var) \
120do { \
121 if (attr == &sysfs_ ## file) \
122 return strtoul_safe(buf, var) ?: (ssize_t) size; \
123} while (0)
124
125#define sysfs_strtoul_clamp(file, var, min, max) \
126do { \
127 if (attr == &sysfs_ ## file) \
128 return strtoul_safe_clamp(buf, var, min, max) \
129 ?: (ssize_t) size; \
130} while (0)
131
132#define strtoul_or_return(cp) \
133({ \
134 unsigned long _v; \
135 int _r = kstrtoul(cp, 10, &_v); \
136 if (_r) \
137 return _r; \
138 _v; \
139})
140
141write_attribute(trigger_gc);
142write_attribute(trigger_discards);
143write_attribute(trigger_invalidates);
144write_attribute(trigger_journal_flush);
145write_attribute(trigger_journal_writes);
146write_attribute(trigger_btree_cache_shrink);
147write_attribute(trigger_btree_key_cache_shrink);
148write_attribute(trigger_freelist_wakeup);
149rw_attribute(gc_gens_pos);
150
151read_attribute(uuid);
152read_attribute(minor);
153read_attribute(flags);
154read_attribute(bucket_size);
155read_attribute(first_bucket);
156read_attribute(nbuckets);
157rw_attribute(durability);
158read_attribute(io_done);
159read_attribute(io_errors);
160write_attribute(io_errors_reset);
161
162read_attribute(io_latency_read);
163read_attribute(io_latency_write);
164read_attribute(io_latency_stats_read);
165read_attribute(io_latency_stats_write);
166read_attribute(congested);
167
168read_attribute(btree_write_stats);
169
170read_attribute(btree_cache_size);
171read_attribute(compression_stats);
172read_attribute(journal_debug);
173read_attribute(btree_cache);
174read_attribute(btree_key_cache);
175read_attribute(btree_reserve_cache);
176read_attribute(stripes_heap);
177read_attribute(open_buckets);
178read_attribute(open_buckets_partial);
179read_attribute(write_points);
180read_attribute(nocow_lock_table);
181
182#ifdef BCH_WRITE_REF_DEBUG
183read_attribute(write_refs);
184
185static const char * const bch2_write_refs[] = {
186#define x(n) #n,
187 BCH_WRITE_REFS()
188#undef x
189 NULL
190};
191
192static void bch2_write_refs_to_text(struct printbuf *out, struct bch_fs *c)
193{
194 bch2_printbuf_tabstop_push(out, 24);
195
196 for (unsigned i = 0; i < ARRAY_SIZE(c->writes); i++)
197 prt_printf(out, "%s\t%li\n", bch2_write_refs[i], atomic_long_read(&c->writes[i]));
198}
199#endif
200
201read_attribute(internal_uuid);
202read_attribute(disk_groups);
203
204read_attribute(has_data);
205read_attribute(alloc_debug);
206read_attribute(accounting);
207read_attribute(usage_base);
208
209#define x(t, n, ...) read_attribute(t);
210BCH_PERSISTENT_COUNTERS()
211#undef x
212
213rw_attribute(discard);
214rw_attribute(label);
215
216rw_attribute(copy_gc_enabled);
217read_attribute(copy_gc_wait);
218
219rw_attribute(rebalance_enabled);
220sysfs_pd_controller_attribute(rebalance);
221read_attribute(rebalance_status);
222
223read_attribute(new_stripes);
224
225read_attribute(io_timers_read);
226read_attribute(io_timers_write);
227
228read_attribute(moving_ctxts);
229
230#ifdef CONFIG_BCACHEFS_TESTS
231write_attribute(perf_test);
232#endif /* CONFIG_BCACHEFS_TESTS */
233
234#define x(_name) \
235 static struct attribute sysfs_time_stat_##_name = \
236 { .name = #_name, .mode = 0644 };
237 BCH_TIME_STATS()
238#undef x
239
240static struct attribute sysfs_state_rw = {
241 .name = "state",
242 .mode = 0444,
243};
244
245static size_t bch2_btree_cache_size(struct bch_fs *c)
246{
247 struct btree_cache *bc = &c->btree_cache;
248 size_t ret = 0;
249 struct btree *b;
250
251 mutex_lock(&bc->lock);
252 list_for_each_entry(b, &bc->live[0].list, list)
253 ret += btree_buf_bytes(b);
254 list_for_each_entry(b, &bc->live[1].list, list)
255 ret += btree_buf_bytes(b);
256 list_for_each_entry(b, &bc->freeable, list)
257 ret += btree_buf_bytes(b);
258 mutex_unlock(&bc->lock);
259 return ret;
260}
261
262static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c)
263{
264 prt_str(out, "type");
265 printbuf_tabstop_push(out, 12);
266 printbuf_tabstop_push(out, 16);
267 printbuf_tabstop_push(out, 16);
268 printbuf_tabstop_push(out, 24);
269 prt_printf(out, "type\tcompressed\runcompressed\raverage extent size\r\n");
270
271 for (unsigned i = 1; i < BCH_COMPRESSION_TYPE_NR; i++) {
272 struct disk_accounting_pos a = {
273 .type = BCH_DISK_ACCOUNTING_compression,
274 .compression.type = i,
275 };
276 struct bpos p = disk_accounting_pos_to_bpos(&a);
277 u64 v[3];
278 bch2_accounting_mem_read(c, p, v, ARRAY_SIZE(v));
279
280 u64 nr_extents = v[0];
281 u64 sectors_uncompressed = v[1];
282 u64 sectors_compressed = v[2];
283
284 bch2_prt_compression_type(out, i);
285 prt_tab(out);
286
287 prt_human_readable_u64(out, sectors_compressed << 9);
288 prt_tab_rjust(out);
289
290 prt_human_readable_u64(out, sectors_uncompressed << 9);
291 prt_tab_rjust(out);
292
293 prt_human_readable_u64(out, nr_extents
294 ? div64_u64(sectors_uncompressed << 9, nr_extents)
295 : 0);
296 prt_tab_rjust(out);
297 prt_newline(out);
298 }
299
300 return 0;
301}
302
303static void bch2_gc_gens_pos_to_text(struct printbuf *out, struct bch_fs *c)
304{
305 prt_printf(out, "%s: ", bch2_btree_id_str(c->gc_gens_btree));
306 bch2_bpos_to_text(out, c->gc_gens_pos);
307 prt_printf(out, "\n");
308}
309
310static void bch2_fs_usage_base_to_text(struct printbuf *out, struct bch_fs *c)
311{
312 struct bch_fs_usage_base b = {};
313
314 acc_u64s_percpu(&b.hidden, &c->usage->hidden, sizeof(b) / sizeof(u64));
315
316 prt_printf(out, "hidden:\t\t%llu\n", b.hidden);
317 prt_printf(out, "btree:\t\t%llu\n", b.btree);
318 prt_printf(out, "data:\t\t%llu\n", b.data);
319 prt_printf(out, "cached:\t%llu\n", b.cached);
320 prt_printf(out, "reserved:\t\t%llu\n", b.reserved);
321 prt_printf(out, "nr_inodes:\t%llu\n", b.nr_inodes);
322}
323
324SHOW(bch2_fs)
325{
326 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj);
327
328 sysfs_print(minor, c->minor);
329 sysfs_printf(internal_uuid, "%pU", c->sb.uuid.b);
330
331 if (attr == &sysfs_flags)
332 prt_bitflags(out, bch2_fs_flag_strs, c->flags);
333
334 sysfs_hprint(btree_cache_size, bch2_btree_cache_size(c));
335
336 if (attr == &sysfs_btree_write_stats)
337 bch2_btree_write_stats_to_text(out, c);
338
339 if (attr == &sysfs_gc_gens_pos)
340 bch2_gc_gens_pos_to_text(out, c);
341
342 sysfs_printf(copy_gc_enabled, "%i", c->copy_gc_enabled);
343
344 sysfs_printf(rebalance_enabled, "%i", c->rebalance.enabled);
345 sysfs_pd_controller_show(rebalance, &c->rebalance.pd); /* XXX */
346
347 if (attr == &sysfs_copy_gc_wait)
348 bch2_copygc_wait_to_text(out, c);
349
350 if (attr == &sysfs_rebalance_status)
351 bch2_rebalance_status_to_text(out, c);
352
353 /* Debugging: */
354
355 if (attr == &sysfs_journal_debug)
356 bch2_journal_debug_to_text(out, &c->journal);
357
358 if (attr == &sysfs_btree_cache)
359 bch2_btree_cache_to_text(out, &c->btree_cache);
360
361 if (attr == &sysfs_btree_key_cache)
362 bch2_btree_key_cache_to_text(out, &c->btree_key_cache);
363
364 if (attr == &sysfs_btree_reserve_cache)
365 bch2_btree_reserve_cache_to_text(out, c);
366
367 if (attr == &sysfs_stripes_heap)
368 bch2_stripes_heap_to_text(out, c);
369
370 if (attr == &sysfs_open_buckets)
371 bch2_open_buckets_to_text(out, c, NULL);
372
373 if (attr == &sysfs_open_buckets_partial)
374 bch2_open_buckets_partial_to_text(out, c);
375
376 if (attr == &sysfs_write_points)
377 bch2_write_points_to_text(out, c);
378
379 if (attr == &sysfs_compression_stats)
380 bch2_compression_stats_to_text(out, c);
381
382 if (attr == &sysfs_new_stripes)
383 bch2_new_stripes_to_text(out, c);
384
385 if (attr == &sysfs_io_timers_read)
386 bch2_io_timers_to_text(out, &c->io_clock[READ]);
387
388 if (attr == &sysfs_io_timers_write)
389 bch2_io_timers_to_text(out, &c->io_clock[WRITE]);
390
391 if (attr == &sysfs_moving_ctxts)
392 bch2_fs_moving_ctxts_to_text(out, c);
393
394#ifdef BCH_WRITE_REF_DEBUG
395 if (attr == &sysfs_write_refs)
396 bch2_write_refs_to_text(out, c);
397#endif
398
399 if (attr == &sysfs_nocow_lock_table)
400 bch2_nocow_locks_to_text(out, &c->nocow_locks);
401
402 if (attr == &sysfs_disk_groups)
403 bch2_disk_groups_to_text(out, c);
404
405 if (attr == &sysfs_alloc_debug)
406 bch2_fs_alloc_debug_to_text(out, c);
407
408 if (attr == &sysfs_accounting)
409 bch2_fs_accounting_to_text(out, c);
410
411 if (attr == &sysfs_usage_base)
412 bch2_fs_usage_base_to_text(out, c);
413
414 return 0;
415}
416
417STORE(bch2_fs)
418{
419 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj);
420
421 if (attr == &sysfs_copy_gc_enabled) {
422 ssize_t ret = strtoul_safe(buf, c->copy_gc_enabled)
423 ?: (ssize_t) size;
424
425 if (c->copygc_thread)
426 wake_up_process(c->copygc_thread);
427 return ret;
428 }
429
430 if (attr == &sysfs_rebalance_enabled) {
431 ssize_t ret = strtoul_safe(buf, c->rebalance.enabled)
432 ?: (ssize_t) size;
433
434 rebalance_wakeup(c);
435 return ret;
436 }
437
438 sysfs_pd_controller_store(rebalance, &c->rebalance.pd);
439
440 /* Debugging: */
441
442 if (!test_bit(BCH_FS_started, &c->flags))
443 return -EPERM;
444
445 /* Debugging: */
446
447 if (!bch2_write_ref_tryget(c, BCH_WRITE_REF_sysfs))
448 return -EROFS;
449
450 if (attr == &sysfs_trigger_btree_cache_shrink) {
451 struct btree_cache *bc = &c->btree_cache;
452 struct shrink_control sc;
453
454 sc.gfp_mask = GFP_KERNEL;
455 sc.nr_to_scan = strtoul_or_return(buf);
456 bc->live[0].shrink->scan_objects(bc->live[0].shrink, &sc);
457 }
458
459 if (attr == &sysfs_trigger_btree_key_cache_shrink) {
460 struct shrink_control sc;
461
462 sc.gfp_mask = GFP_KERNEL;
463 sc.nr_to_scan = strtoul_or_return(buf);
464 c->btree_key_cache.shrink->scan_objects(c->btree_key_cache.shrink, &sc);
465 }
466
467 if (attr == &sysfs_trigger_gc)
468 bch2_gc_gens(c);
469
470 if (attr == &sysfs_trigger_discards)
471 bch2_do_discards(c);
472
473 if (attr == &sysfs_trigger_invalidates)
474 bch2_do_invalidates(c);
475
476 if (attr == &sysfs_trigger_journal_flush) {
477 bch2_journal_flush_all_pins(&c->journal);
478 bch2_journal_meta(&c->journal);
479 }
480
481 if (attr == &sysfs_trigger_journal_writes)
482 bch2_journal_do_writes(&c->journal);
483
484 if (attr == &sysfs_trigger_freelist_wakeup)
485 closure_wake_up(&c->freelist_wait);
486
487#ifdef CONFIG_BCACHEFS_TESTS
488 if (attr == &sysfs_perf_test) {
489 char *tmp = kstrdup(buf, GFP_KERNEL), *p = tmp;
490 char *test = strsep(&p, " \t\n");
491 char *nr_str = strsep(&p, " \t\n");
492 char *threads_str = strsep(&p, " \t\n");
493 unsigned threads;
494 u64 nr;
495 int ret = -EINVAL;
496
497 if (threads_str &&
498 !(ret = kstrtouint(threads_str, 10, &threads)) &&
499 !(ret = bch2_strtoull_h(nr_str, &nr)))
500 ret = bch2_btree_perf_test(c, test, nr, threads);
501 kfree(tmp);
502
503 if (ret)
504 size = ret;
505 }
506#endif
507 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs);
508 return size;
509}
510SYSFS_OPS(bch2_fs);
511
512struct attribute *bch2_fs_files[] = {
513 &sysfs_minor,
514 &sysfs_btree_cache_size,
515 &sysfs_btree_write_stats,
516
517 &sysfs_rebalance_status,
518
519 &sysfs_compression_stats,
520
521#ifdef CONFIG_BCACHEFS_TESTS
522 &sysfs_perf_test,
523#endif
524 NULL
525};
526
527/* counters dir */
528
529SHOW(bch2_fs_counters)
530{
531 struct bch_fs *c = container_of(kobj, struct bch_fs, counters_kobj);
532 u64 counter = 0;
533 u64 counter_since_mount = 0;
534
535 printbuf_tabstop_push(out, 32);
536
537 #define x(t, ...) \
538 if (attr == &sysfs_##t) { \
539 counter = percpu_u64_get(&c->counters[BCH_COUNTER_##t]);\
540 counter_since_mount = counter - c->counters_on_mount[BCH_COUNTER_##t];\
541 prt_printf(out, "since mount:\t"); \
542 prt_human_readable_u64(out, counter_since_mount); \
543 prt_newline(out); \
544 \
545 prt_printf(out, "since filesystem creation:\t"); \
546 prt_human_readable_u64(out, counter); \
547 prt_newline(out); \
548 }
549 BCH_PERSISTENT_COUNTERS()
550 #undef x
551 return 0;
552}
553
554STORE(bch2_fs_counters) {
555 return 0;
556}
557
558SYSFS_OPS(bch2_fs_counters);
559
560struct attribute *bch2_fs_counters_files[] = {
561#define x(t, ...) \
562 &sysfs_##t,
563 BCH_PERSISTENT_COUNTERS()
564#undef x
565 NULL
566};
567/* internal dir - just a wrapper */
568
569SHOW(bch2_fs_internal)
570{
571 struct bch_fs *c = container_of(kobj, struct bch_fs, internal);
572
573 return bch2_fs_to_text(out, &c->kobj, attr);
574}
575
576STORE(bch2_fs_internal)
577{
578 struct bch_fs *c = container_of(kobj, struct bch_fs, internal);
579
580 return bch2_fs_store(&c->kobj, attr, buf, size);
581}
582SYSFS_OPS(bch2_fs_internal);
583
584struct attribute *bch2_fs_internal_files[] = {
585 &sysfs_flags,
586 &sysfs_journal_debug,
587 &sysfs_btree_cache,
588 &sysfs_btree_key_cache,
589 &sysfs_btree_reserve_cache,
590 &sysfs_new_stripes,
591 &sysfs_stripes_heap,
592 &sysfs_open_buckets,
593 &sysfs_open_buckets_partial,
594 &sysfs_write_points,
595#ifdef BCH_WRITE_REF_DEBUG
596 &sysfs_write_refs,
597#endif
598 &sysfs_nocow_lock_table,
599 &sysfs_io_timers_read,
600 &sysfs_io_timers_write,
601
602 &sysfs_trigger_gc,
603 &sysfs_trigger_discards,
604 &sysfs_trigger_invalidates,
605 &sysfs_trigger_journal_flush,
606 &sysfs_trigger_journal_writes,
607 &sysfs_trigger_btree_cache_shrink,
608 &sysfs_trigger_btree_key_cache_shrink,
609 &sysfs_trigger_freelist_wakeup,
610
611 &sysfs_gc_gens_pos,
612
613 &sysfs_copy_gc_enabled,
614 &sysfs_copy_gc_wait,
615
616 &sysfs_rebalance_enabled,
617 sysfs_pd_controller_files(rebalance),
618
619 &sysfs_moving_ctxts,
620
621 &sysfs_internal_uuid,
622
623 &sysfs_disk_groups,
624 &sysfs_alloc_debug,
625 &sysfs_accounting,
626 &sysfs_usage_base,
627 NULL
628};
629
630/* options */
631
632SHOW(bch2_fs_opts_dir)
633{
634 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir);
635 const struct bch_option *opt = container_of(attr, struct bch_option, attr);
636 int id = opt - bch2_opt_table;
637 u64 v = bch2_opt_get_by_id(&c->opts, id);
638
639 bch2_opt_to_text(out, c, c->disk_sb.sb, opt, v, OPT_SHOW_FULL_LIST);
640 prt_char(out, '\n');
641
642 return 0;
643}
644
645STORE(bch2_fs_opts_dir)
646{
647 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir);
648 const struct bch_option *opt = container_of(attr, struct bch_option, attr);
649 int ret, id = opt - bch2_opt_table;
650 char *tmp;
651 u64 v;
652
653 /*
654 * We don't need to take c->writes for correctness, but it eliminates an
655 * unsightly error message in the dmesg log when we're RO:
656 */
657 if (unlikely(!bch2_write_ref_tryget(c, BCH_WRITE_REF_sysfs)))
658 return -EROFS;
659
660 tmp = kstrdup(buf, GFP_KERNEL);
661 if (!tmp) {
662 ret = -ENOMEM;
663 goto err;
664 }
665
666 ret = bch2_opt_parse(c, opt, strim(tmp), &v, NULL);
667 kfree(tmp);
668
669 if (ret < 0)
670 goto err;
671
672 ret = bch2_opt_check_may_set(c, id, v);
673 if (ret < 0)
674 goto err;
675
676 bch2_opt_set_sb(c, NULL, opt, v);
677 bch2_opt_set_by_id(&c->opts, id, v);
678
679 if (v &&
680 (id == Opt_background_target ||
681 id == Opt_background_compression ||
682 (id == Opt_compression && !c->opts.background_compression)))
683 bch2_set_rebalance_needs_scan(c, 0);
684
685 ret = size;
686err:
687 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs);
688 return ret;
689}
690SYSFS_OPS(bch2_fs_opts_dir);
691
692struct attribute *bch2_fs_opts_dir_files[] = { NULL };
693
694int bch2_opts_create_sysfs_files(struct kobject *kobj)
695{
696 const struct bch_option *i;
697 int ret;
698
699 for (i = bch2_opt_table;
700 i < bch2_opt_table + bch2_opts_nr;
701 i++) {
702 if (!(i->flags & OPT_FS))
703 continue;
704
705 ret = sysfs_create_file(kobj, &i->attr);
706 if (ret)
707 return ret;
708 }
709
710 return 0;
711}
712
713/* time stats */
714
715SHOW(bch2_fs_time_stats)
716{
717 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats);
718
719#define x(name) \
720 if (attr == &sysfs_time_stat_##name) \
721 bch2_time_stats_to_text(out, &c->times[BCH_TIME_##name]);
722 BCH_TIME_STATS()
723#undef x
724
725 return 0;
726}
727
728STORE(bch2_fs_time_stats)
729{
730 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats);
731
732#define x(name) \
733 if (attr == &sysfs_time_stat_##name) \
734 bch2_time_stats_reset(&c->times[BCH_TIME_##name]);
735 BCH_TIME_STATS()
736#undef x
737 return size;
738}
739SYSFS_OPS(bch2_fs_time_stats);
740
741struct attribute *bch2_fs_time_stats_files[] = {
742#define x(name) \
743 &sysfs_time_stat_##name,
744 BCH_TIME_STATS()
745#undef x
746 NULL
747};
748
749static const char * const bch2_rw[] = {
750 "read",
751 "write",
752 NULL
753};
754
755static void dev_io_done_to_text(struct printbuf *out, struct bch_dev *ca)
756{
757 int rw, i;
758
759 for (rw = 0; rw < 2; rw++) {
760 prt_printf(out, "%s:\n", bch2_rw[rw]);
761
762 for (i = 1; i < BCH_DATA_NR; i++)
763 prt_printf(out, "%-12s:%12llu\n",
764 bch2_data_type_str(i),
765 percpu_u64_get(&ca->io_done->sectors[rw][i]) << 9);
766 }
767}
768
769SHOW(bch2_dev)
770{
771 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj);
772 struct bch_fs *c = ca->fs;
773
774 sysfs_printf(uuid, "%pU\n", ca->uuid.b);
775
776 sysfs_print(bucket_size, bucket_bytes(ca));
777 sysfs_print(first_bucket, ca->mi.first_bucket);
778 sysfs_print(nbuckets, ca->mi.nbuckets);
779 sysfs_print(durability, ca->mi.durability);
780 sysfs_print(discard, ca->mi.discard);
781
782 if (attr == &sysfs_label) {
783 if (ca->mi.group)
784 bch2_disk_path_to_text(out, c, ca->mi.group - 1);
785 prt_char(out, '\n');
786 }
787
788 if (attr == &sysfs_has_data) {
789 prt_bitflags(out, __bch2_data_types, bch2_dev_has_data(c, ca));
790 prt_char(out, '\n');
791 }
792
793 if (attr == &sysfs_state_rw) {
794 prt_string_option(out, bch2_member_states, ca->mi.state);
795 prt_char(out, '\n');
796 }
797
798 if (attr == &sysfs_io_done)
799 dev_io_done_to_text(out, ca);
800
801 if (attr == &sysfs_io_errors)
802 bch2_dev_io_errors_to_text(out, ca);
803
804 sysfs_print(io_latency_read, atomic64_read(&ca->cur_latency[READ]));
805 sysfs_print(io_latency_write, atomic64_read(&ca->cur_latency[WRITE]));
806
807 if (attr == &sysfs_io_latency_stats_read)
808 bch2_time_stats_to_text(out, &ca->io_latency[READ].stats);
809
810 if (attr == &sysfs_io_latency_stats_write)
811 bch2_time_stats_to_text(out, &ca->io_latency[WRITE].stats);
812
813 sysfs_printf(congested, "%u%%",
814 clamp(atomic_read(&ca->congested), 0, CONGESTED_MAX)
815 * 100 / CONGESTED_MAX);
816
817 if (attr == &sysfs_alloc_debug)
818 bch2_dev_alloc_debug_to_text(out, ca);
819
820 if (attr == &sysfs_open_buckets)
821 bch2_open_buckets_to_text(out, c, ca);
822
823 return 0;
824}
825
826STORE(bch2_dev)
827{
828 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj);
829 struct bch_fs *c = ca->fs;
830
831 if (attr == &sysfs_discard) {
832 bool v = strtoul_or_return(buf);
833
834 bch2_opt_set_sb(c, ca, bch2_opt_table + Opt_discard, v);
835 }
836
837 if (attr == &sysfs_durability) {
838 u64 v = strtoul_or_return(buf);
839
840 bch2_opt_set_sb(c, ca, bch2_opt_table + Opt_durability, v);
841 }
842
843 if (attr == &sysfs_label) {
844 char *tmp;
845 int ret;
846
847 tmp = kstrdup(buf, GFP_KERNEL);
848 if (!tmp)
849 return -ENOMEM;
850
851 ret = bch2_dev_group_set(c, ca, strim(tmp));
852 kfree(tmp);
853 if (ret)
854 return ret;
855 }
856
857 if (attr == &sysfs_io_errors_reset)
858 bch2_dev_errors_reset(ca);
859
860 return size;
861}
862SYSFS_OPS(bch2_dev);
863
864struct attribute *bch2_dev_files[] = {
865 &sysfs_uuid,
866 &sysfs_bucket_size,
867 &sysfs_first_bucket,
868 &sysfs_nbuckets,
869 &sysfs_durability,
870
871 /* settings: */
872 &sysfs_discard,
873 &sysfs_state_rw,
874 &sysfs_label,
875
876 &sysfs_has_data,
877 &sysfs_io_done,
878 &sysfs_io_errors,
879 &sysfs_io_errors_reset,
880
881 &sysfs_io_latency_read,
882 &sysfs_io_latency_write,
883 &sysfs_io_latency_stats_read,
884 &sysfs_io_latency_stats_write,
885 &sysfs_congested,
886
887 /* debug: */
888 &sysfs_alloc_debug,
889 &sysfs_open_buckets,
890 NULL
891};
892
893#endif /* _BCACHEFS_SYSFS_H_ */