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) \
48 const struct sysfs_ops type ## _sysfs_ops = { \
49 .show = type ## _show, \
50 .store = type ## _store \
51 }
52
53 #define SHOW(fn) \
54 static ssize_t fn ## _to_text(struct printbuf *, \
55 struct kobject *, struct attribute *); \
56 \
57 static 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 \
77 static ssize_t fn ## _to_text(struct printbuf *out, struct kobject *kobj,\
78 struct attribute *attr)
79
80 #define STORE(fn) \
81 static ssize_t fn ## _store_inner(struct kobject *, struct attribute *,\
82 const char *, size_t); \
83 \
84 static 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 \
90 static 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, ...) \
102 do { \
103 if (attr == &sysfs_ ## file) \
104 prt_printf(out, fmt "\n", __VA_ARGS__); \
105 } while (0)
106
107 #define sysfs_print(file, var) \
108 do { \
109 if (attr == &sysfs_ ## file) \
110 snprint(out, var); \
111 } while (0)
112
113 #define sysfs_hprint(file, val) \
114 do { \
115 if (attr == &sysfs_ ## file) \
116 prt_human_readable_s64(out, val); \
117 } while (0)
118
119 #define sysfs_strtoul(file, var) \
120 do { \
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) \
126 do { \
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
141 write_attribute(trigger_gc);
142 write_attribute(trigger_discards);
143 write_attribute(trigger_invalidates);
144 write_attribute(trigger_journal_flush);
145 write_attribute(trigger_journal_writes);
146 write_attribute(trigger_btree_cache_shrink);
147 write_attribute(trigger_btree_key_cache_shrink);
148 write_attribute(trigger_freelist_wakeup);
149 write_attribute(trigger_btree_updates);
150 read_attribute(gc_gens_pos);
151
152 read_attribute(uuid);
153 read_attribute(minor);
154 read_attribute(flags);
155 read_attribute(first_bucket);
156 read_attribute(nbuckets);
157 read_attribute(io_done);
158 read_attribute(io_errors);
159 write_attribute(io_errors_reset);
160
161 read_attribute(io_latency_read);
162 read_attribute(io_latency_write);
163 read_attribute(io_latency_stats_read);
164 read_attribute(io_latency_stats_write);
165 read_attribute(congested);
166
167 read_attribute(btree_write_stats);
168
169 read_attribute(btree_cache_size);
170 read_attribute(compression_stats);
171 read_attribute(journal_debug);
172 read_attribute(btree_cache);
173 read_attribute(btree_key_cache);
174 read_attribute(btree_reserve_cache);
175 read_attribute(open_buckets);
176 read_attribute(open_buckets_partial);
177 read_attribute(nocow_lock_table);
178
179 #ifdef BCH_WRITE_REF_DEBUG
180 read_attribute(write_refs);
181
182 static const char * const bch2_write_refs[] = {
183 #define x(n) #n,
184 BCH_WRITE_REFS()
185 #undef x
186 NULL
187 };
188
bch2_write_refs_to_text(struct printbuf * out,struct bch_fs * c)189 static void bch2_write_refs_to_text(struct printbuf *out, struct bch_fs *c)
190 {
191 bch2_printbuf_tabstop_push(out, 24);
192
193 for (unsigned i = 0; i < ARRAY_SIZE(c->writes); i++)
194 prt_printf(out, "%s\t%li\n", bch2_write_refs[i], atomic_long_read(&c->writes[i]));
195 }
196 #endif
197
198 read_attribute(internal_uuid);
199 read_attribute(disk_groups);
200
201 read_attribute(has_data);
202 read_attribute(alloc_debug);
203 read_attribute(usage_base);
204
205 #define x(t, n, ...) read_attribute(t);
206 BCH_PERSISTENT_COUNTERS()
207 #undef x
208
209 rw_attribute(label);
210
211 read_attribute(copy_gc_wait);
212
213 sysfs_pd_controller_attribute(rebalance);
214 read_attribute(rebalance_status);
215
216 read_attribute(new_stripes);
217
218 read_attribute(io_timers_read);
219 read_attribute(io_timers_write);
220
221 read_attribute(moving_ctxts);
222
223 #ifdef CONFIG_BCACHEFS_TESTS
224 write_attribute(perf_test);
225 #endif /* CONFIG_BCACHEFS_TESTS */
226
227 #define x(_name) \
228 static struct attribute sysfs_time_stat_##_name = \
229 { .name = #_name, .mode = 0644 };
BCH_TIME_STATS()230 BCH_TIME_STATS()
231 #undef x
232
233 static size_t bch2_btree_cache_size(struct bch_fs *c)
234 {
235 struct btree_cache *bc = &c->btree_cache;
236 size_t ret = 0;
237 struct btree *b;
238
239 mutex_lock(&bc->lock);
240 list_for_each_entry(b, &bc->live[0].list, list)
241 ret += btree_buf_bytes(b);
242 list_for_each_entry(b, &bc->live[1].list, list)
243 ret += btree_buf_bytes(b);
244 list_for_each_entry(b, &bc->freeable, list)
245 ret += btree_buf_bytes(b);
246 mutex_unlock(&bc->lock);
247 return ret;
248 }
249
bch2_compression_stats_to_text(struct printbuf * out,struct bch_fs * c)250 static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c)
251 {
252 prt_str(out, "type");
253 printbuf_tabstop_push(out, 12);
254 printbuf_tabstop_push(out, 16);
255 printbuf_tabstop_push(out, 16);
256 printbuf_tabstop_push(out, 24);
257 prt_printf(out, "type\tcompressed\runcompressed\raverage extent size\r\n");
258
259 for (unsigned i = 1; i < BCH_COMPRESSION_TYPE_NR; i++) {
260 struct disk_accounting_pos a;
261 disk_accounting_key_init(a, compression, .type = i);
262 struct bpos p = disk_accounting_pos_to_bpos(&a);
263 u64 v[3];
264 bch2_accounting_mem_read(c, p, v, ARRAY_SIZE(v));
265
266 u64 nr_extents = v[0];
267 u64 sectors_uncompressed = v[1];
268 u64 sectors_compressed = v[2];
269
270 bch2_prt_compression_type(out, i);
271 prt_tab(out);
272
273 prt_human_readable_u64(out, sectors_compressed << 9);
274 prt_tab_rjust(out);
275
276 prt_human_readable_u64(out, sectors_uncompressed << 9);
277 prt_tab_rjust(out);
278
279 prt_human_readable_u64(out, nr_extents
280 ? div64_u64(sectors_uncompressed << 9, nr_extents)
281 : 0);
282 prt_tab_rjust(out);
283 prt_newline(out);
284 }
285
286 return 0;
287 }
288
bch2_gc_gens_pos_to_text(struct printbuf * out,struct bch_fs * c)289 static void bch2_gc_gens_pos_to_text(struct printbuf *out, struct bch_fs *c)
290 {
291 bch2_btree_id_to_text(out, c->gc_gens_btree);
292 prt_printf(out, ": ");
293 bch2_bpos_to_text(out, c->gc_gens_pos);
294 prt_printf(out, "\n");
295 }
296
bch2_fs_usage_base_to_text(struct printbuf * out,struct bch_fs * c)297 static void bch2_fs_usage_base_to_text(struct printbuf *out, struct bch_fs *c)
298 {
299 struct bch_fs_usage_base b = {};
300
301 acc_u64s_percpu(&b.hidden, &c->usage->hidden, sizeof(b) / sizeof(u64));
302
303 prt_printf(out, "hidden:\t\t%llu\n", b.hidden);
304 prt_printf(out, "btree:\t\t%llu\n", b.btree);
305 prt_printf(out, "data:\t\t%llu\n", b.data);
306 prt_printf(out, "cached:\t%llu\n", b.cached);
307 prt_printf(out, "reserved:\t\t%llu\n", b.reserved);
308 prt_printf(out, "nr_inodes:\t%llu\n", b.nr_inodes);
309 }
310
SHOW(bch2_fs)311 SHOW(bch2_fs)
312 {
313 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj);
314
315 sysfs_print(minor, c->minor);
316 sysfs_printf(internal_uuid, "%pU", c->sb.uuid.b);
317
318 if (attr == &sysfs_flags)
319 prt_bitflags(out, bch2_fs_flag_strs, c->flags);
320
321 sysfs_hprint(btree_cache_size, bch2_btree_cache_size(c));
322
323 if (attr == &sysfs_btree_write_stats)
324 bch2_btree_write_stats_to_text(out, c);
325
326 if (attr == &sysfs_gc_gens_pos)
327 bch2_gc_gens_pos_to_text(out, c);
328
329 sysfs_pd_controller_show(rebalance, &c->rebalance.pd); /* XXX */
330
331 if (attr == &sysfs_copy_gc_wait)
332 bch2_copygc_wait_to_text(out, c);
333
334 if (attr == &sysfs_rebalance_status)
335 bch2_rebalance_status_to_text(out, c);
336
337 /* Debugging: */
338
339 if (attr == &sysfs_journal_debug)
340 bch2_journal_debug_to_text(out, &c->journal);
341
342 if (attr == &sysfs_btree_cache)
343 bch2_btree_cache_to_text(out, &c->btree_cache);
344
345 if (attr == &sysfs_btree_key_cache)
346 bch2_btree_key_cache_to_text(out, &c->btree_key_cache);
347
348 if (attr == &sysfs_btree_reserve_cache)
349 bch2_btree_reserve_cache_to_text(out, c);
350
351 if (attr == &sysfs_open_buckets)
352 bch2_open_buckets_to_text(out, c, NULL);
353
354 if (attr == &sysfs_open_buckets_partial)
355 bch2_open_buckets_partial_to_text(out, c);
356
357 if (attr == &sysfs_compression_stats)
358 bch2_compression_stats_to_text(out, c);
359
360 if (attr == &sysfs_new_stripes)
361 bch2_new_stripes_to_text(out, c);
362
363 if (attr == &sysfs_io_timers_read)
364 bch2_io_timers_to_text(out, &c->io_clock[READ]);
365
366 if (attr == &sysfs_io_timers_write)
367 bch2_io_timers_to_text(out, &c->io_clock[WRITE]);
368
369 if (attr == &sysfs_moving_ctxts)
370 bch2_fs_moving_ctxts_to_text(out, c);
371
372 #ifdef BCH_WRITE_REF_DEBUG
373 if (attr == &sysfs_write_refs)
374 bch2_write_refs_to_text(out, c);
375 #endif
376
377 if (attr == &sysfs_nocow_lock_table)
378 bch2_nocow_locks_to_text(out, &c->nocow_locks);
379
380 if (attr == &sysfs_disk_groups)
381 bch2_disk_groups_to_text(out, c);
382
383 if (attr == &sysfs_alloc_debug)
384 bch2_fs_alloc_debug_to_text(out, c);
385
386 if (attr == &sysfs_usage_base)
387 bch2_fs_usage_base_to_text(out, c);
388
389 return 0;
390 }
391
STORE(bch2_fs)392 STORE(bch2_fs)
393 {
394 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj);
395
396 sysfs_pd_controller_store(rebalance, &c->rebalance.pd);
397
398 /* Debugging: */
399
400 if (!test_bit(BCH_FS_started, &c->flags))
401 return -EPERM;
402
403 /* Debugging: */
404
405 if (attr == &sysfs_trigger_btree_updates)
406 queue_work(c->btree_interior_update_worker, &c->btree_interior_update_work);
407
408 if (!bch2_write_ref_tryget(c, BCH_WRITE_REF_sysfs))
409 return -EROFS;
410
411 if (attr == &sysfs_trigger_btree_cache_shrink) {
412 struct btree_cache *bc = &c->btree_cache;
413 struct shrink_control sc;
414
415 sc.gfp_mask = GFP_KERNEL;
416 sc.nr_to_scan = strtoul_or_return(buf);
417 bc->live[0].shrink->scan_objects(bc->live[0].shrink, &sc);
418 }
419
420 if (attr == &sysfs_trigger_btree_key_cache_shrink) {
421 struct shrink_control sc;
422
423 sc.gfp_mask = GFP_KERNEL;
424 sc.nr_to_scan = strtoul_or_return(buf);
425 c->btree_key_cache.shrink->scan_objects(c->btree_key_cache.shrink, &sc);
426 }
427
428 if (attr == &sysfs_trigger_gc)
429 bch2_gc_gens(c);
430
431 if (attr == &sysfs_trigger_discards)
432 bch2_do_discards(c);
433
434 if (attr == &sysfs_trigger_invalidates)
435 bch2_do_invalidates(c);
436
437 if (attr == &sysfs_trigger_journal_flush) {
438 bch2_journal_flush_all_pins(&c->journal);
439 bch2_journal_meta(&c->journal);
440 }
441
442 if (attr == &sysfs_trigger_journal_writes)
443 bch2_journal_do_writes(&c->journal);
444
445 if (attr == &sysfs_trigger_freelist_wakeup)
446 closure_wake_up(&c->freelist_wait);
447
448 #ifdef CONFIG_BCACHEFS_TESTS
449 if (attr == &sysfs_perf_test) {
450 char *tmp = kstrdup(buf, GFP_KERNEL), *p = tmp;
451 char *test = strsep(&p, " \t\n");
452 char *nr_str = strsep(&p, " \t\n");
453 char *threads_str = strsep(&p, " \t\n");
454 unsigned threads;
455 u64 nr;
456 int ret = -EINVAL;
457
458 if (threads_str &&
459 !(ret = kstrtouint(threads_str, 10, &threads)) &&
460 !(ret = bch2_strtoull_h(nr_str, &nr)))
461 ret = bch2_btree_perf_test(c, test, nr, threads);
462 kfree(tmp);
463
464 if (ret)
465 size = ret;
466 }
467 #endif
468 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs);
469 return size;
470 }
471 SYSFS_OPS(bch2_fs);
472
473 struct attribute *bch2_fs_files[] = {
474 &sysfs_minor,
475 &sysfs_btree_cache_size,
476 &sysfs_btree_write_stats,
477
478 &sysfs_rebalance_status,
479
480 &sysfs_compression_stats,
481
482 #ifdef CONFIG_BCACHEFS_TESTS
483 &sysfs_perf_test,
484 #endif
485 NULL
486 };
487
488 /* counters dir */
489
SHOW(bch2_fs_counters)490 SHOW(bch2_fs_counters)
491 {
492 struct bch_fs *c = container_of(kobj, struct bch_fs, counters_kobj);
493 u64 counter = 0;
494 u64 counter_since_mount = 0;
495
496 printbuf_tabstop_push(out, 32);
497
498 #define x(t, n, f, ...) \
499 if (attr == &sysfs_##t) { \
500 counter = percpu_u64_get(&c->counters[BCH_COUNTER_##t]);\
501 counter_since_mount = counter - c->counters_on_mount[BCH_COUNTER_##t];\
502 if (f & TYPE_SECTORS) { \
503 counter <<= 9; \
504 counter_since_mount <<= 9; \
505 } \
506 \
507 prt_printf(out, "since mount:\t"); \
508 (f & TYPE_COUNTER) ? prt_u64(out, counter_since_mount) :\
509 prt_human_readable_u64(out, counter_since_mount); \
510 prt_newline(out); \
511 \
512 prt_printf(out, "since filesystem creation:\t"); \
513 (f & TYPE_COUNTER) ? prt_u64(out, counter) : \
514 prt_human_readable_u64(out, counter); \
515 prt_newline(out); \
516 }
517 BCH_PERSISTENT_COUNTERS()
518 #undef x
519 return 0;
520 }
521
STORE(bch2_fs_counters)522 STORE(bch2_fs_counters) {
523 return 0;
524 }
525
526 SYSFS_OPS(bch2_fs_counters);
527
528 struct attribute *bch2_fs_counters_files[] = {
529 #define x(t, ...) \
530 &sysfs_##t,
531 BCH_PERSISTENT_COUNTERS()
532 #undef x
533 NULL
534 };
535 /* internal dir - just a wrapper */
536
SHOW(bch2_fs_internal)537 SHOW(bch2_fs_internal)
538 {
539 struct bch_fs *c = container_of(kobj, struct bch_fs, internal);
540
541 return bch2_fs_to_text(out, &c->kobj, attr);
542 }
543
STORE(bch2_fs_internal)544 STORE(bch2_fs_internal)
545 {
546 struct bch_fs *c = container_of(kobj, struct bch_fs, internal);
547
548 return bch2_fs_store(&c->kobj, attr, buf, size);
549 }
550 SYSFS_OPS(bch2_fs_internal);
551
552 struct attribute *bch2_fs_internal_files[] = {
553 &sysfs_flags,
554 &sysfs_journal_debug,
555 &sysfs_btree_cache,
556 &sysfs_btree_key_cache,
557 &sysfs_btree_reserve_cache,
558 &sysfs_new_stripes,
559 &sysfs_open_buckets,
560 &sysfs_open_buckets_partial,
561 #ifdef BCH_WRITE_REF_DEBUG
562 &sysfs_write_refs,
563 #endif
564 &sysfs_nocow_lock_table,
565 &sysfs_io_timers_read,
566 &sysfs_io_timers_write,
567
568 &sysfs_trigger_gc,
569 &sysfs_trigger_discards,
570 &sysfs_trigger_invalidates,
571 &sysfs_trigger_journal_flush,
572 &sysfs_trigger_journal_writes,
573 &sysfs_trigger_btree_cache_shrink,
574 &sysfs_trigger_btree_key_cache_shrink,
575 &sysfs_trigger_freelist_wakeup,
576 &sysfs_trigger_btree_updates,
577
578 &sysfs_gc_gens_pos,
579
580 &sysfs_copy_gc_wait,
581
582 sysfs_pd_controller_files(rebalance),
583
584 &sysfs_moving_ctxts,
585
586 &sysfs_internal_uuid,
587
588 &sysfs_disk_groups,
589 &sysfs_alloc_debug,
590 &sysfs_usage_base,
591 NULL
592 };
593
594 /* options */
595
sysfs_opt_show(struct bch_fs * c,struct bch_dev * ca,enum bch_opt_id id,struct printbuf * out)596 static ssize_t sysfs_opt_show(struct bch_fs *c,
597 struct bch_dev *ca,
598 enum bch_opt_id id,
599 struct printbuf *out)
600 {
601 const struct bch_option *opt = bch2_opt_table + id;
602 u64 v;
603
604 if (opt->flags & OPT_FS) {
605 v = bch2_opt_get_by_id(&c->opts, id);
606 } else if ((opt->flags & OPT_DEVICE) && opt->get_member) {
607 v = bch2_opt_from_sb(c->disk_sb.sb, id, ca->dev_idx);
608 } else {
609 return -EINVAL;
610 }
611
612 bch2_opt_to_text(out, c, c->disk_sb.sb, opt, v, OPT_SHOW_FULL_LIST);
613 prt_char(out, '\n');
614 return 0;
615 }
616
sysfs_opt_store(struct bch_fs * c,struct bch_dev * ca,enum bch_opt_id id,const char * buf,size_t size)617 static ssize_t sysfs_opt_store(struct bch_fs *c,
618 struct bch_dev *ca,
619 enum bch_opt_id id,
620 const char *buf, size_t size)
621 {
622 const struct bch_option *opt = bch2_opt_table + id;
623 int ret = 0;
624
625 /*
626 * We don't need to take c->writes for correctness, but it eliminates an
627 * unsightly error message in the dmesg log when we're RO:
628 */
629 if (unlikely(!bch2_write_ref_tryget(c, BCH_WRITE_REF_sysfs)))
630 return -EROFS;
631
632 char *tmp = kstrdup(buf, GFP_KERNEL);
633 if (!tmp) {
634 ret = -ENOMEM;
635 goto err;
636 }
637
638 u64 v;
639 ret = bch2_opt_parse(c, opt, strim(tmp), &v, NULL) ?:
640 bch2_opt_check_may_set(c, ca, id, v);
641 kfree(tmp);
642
643 if (ret < 0)
644 goto err;
645
646 bch2_opt_set_sb(c, ca, opt, v);
647 bch2_opt_set_by_id(&c->opts, id, v);
648
649 if (v &&
650 (id == Opt_background_target ||
651 (id == Opt_foreground_target && !c->opts.background_target) ||
652 id == Opt_background_compression ||
653 (id == Opt_compression && !c->opts.background_compression)))
654 bch2_set_rebalance_needs_scan(c, 0);
655
656 if (v && id == Opt_rebalance_enabled)
657 bch2_rebalance_wakeup(c);
658
659 if (v && id == Opt_copygc_enabled)
660 bch2_copygc_wakeup(c);
661
662 if (id == Opt_discard && !ca) {
663 mutex_lock(&c->sb_lock);
664 for_each_member_device(c, ca)
665 opt->set_member(bch2_members_v2_get_mut(ca->disk_sb.sb, ca->dev_idx), v);
666
667 bch2_write_super(c);
668 mutex_unlock(&c->sb_lock);
669 }
670
671 ret = size;
672 err:
673 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs);
674 return ret;
675 }
676
SHOW(bch2_fs_opts_dir)677 SHOW(bch2_fs_opts_dir)
678 {
679 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir);
680 int id = bch2_opt_lookup(attr->name);
681 if (id < 0)
682 return 0;
683
684 return sysfs_opt_show(c, NULL, id, out);
685 }
686
STORE(bch2_fs_opts_dir)687 STORE(bch2_fs_opts_dir)
688 {
689 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir);
690 int id = bch2_opt_lookup(attr->name);
691 if (id < 0)
692 return 0;
693
694 return sysfs_opt_store(c, NULL, id, buf, size);
695 }
696 SYSFS_OPS(bch2_fs_opts_dir);
697
698 struct attribute *bch2_fs_opts_dir_files[] = { NULL };
699
bch2_opts_create_sysfs_files(struct kobject * kobj,unsigned type)700 int bch2_opts_create_sysfs_files(struct kobject *kobj, unsigned type)
701 {
702 for (const struct bch_option *i = bch2_opt_table;
703 i < bch2_opt_table + bch2_opts_nr;
704 i++) {
705 if (i->flags & OPT_HIDDEN)
706 continue;
707 if (!(i->flags & type))
708 continue;
709
710 int ret = sysfs_create_file(kobj, &i->attr);
711 if (ret)
712 return ret;
713 }
714
715 return 0;
716 }
717
718 /* time stats */
719
SHOW(bch2_fs_time_stats)720 SHOW(bch2_fs_time_stats)
721 {
722 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats);
723
724 #define x(name) \
725 if (attr == &sysfs_time_stat_##name) \
726 bch2_time_stats_to_text(out, &c->times[BCH_TIME_##name]);
727 BCH_TIME_STATS()
728 #undef x
729
730 return 0;
731 }
732
STORE(bch2_fs_time_stats)733 STORE(bch2_fs_time_stats)
734 {
735 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats);
736
737 #define x(name) \
738 if (attr == &sysfs_time_stat_##name) \
739 bch2_time_stats_reset(&c->times[BCH_TIME_##name]);
740 BCH_TIME_STATS()
741 #undef x
742 return size;
743 }
744 SYSFS_OPS(bch2_fs_time_stats);
745
746 struct attribute *bch2_fs_time_stats_files[] = {
747 #define x(name) \
748 &sysfs_time_stat_##name,
749 BCH_TIME_STATS()
750 #undef x
751 NULL
752 };
753
754 static const char * const bch2_rw[] = {
755 "read",
756 "write",
757 NULL
758 };
759
dev_io_done_to_text(struct printbuf * out,struct bch_dev * ca)760 static void dev_io_done_to_text(struct printbuf *out, struct bch_dev *ca)
761 {
762 int rw, i;
763
764 for (rw = 0; rw < 2; rw++) {
765 prt_printf(out, "%s:\n", bch2_rw[rw]);
766
767 for (i = 1; i < BCH_DATA_NR; i++)
768 prt_printf(out, "%-12s:%12llu\n",
769 bch2_data_type_str(i),
770 percpu_u64_get(&ca->io_done->sectors[rw][i]) << 9);
771 }
772 }
773
SHOW(bch2_dev)774 SHOW(bch2_dev)
775 {
776 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj);
777 struct bch_fs *c = ca->fs;
778
779 sysfs_printf(uuid, "%pU\n", ca->uuid.b);
780
781 sysfs_print(first_bucket, ca->mi.first_bucket);
782 sysfs_print(nbuckets, ca->mi.nbuckets);
783
784 if (attr == &sysfs_label) {
785 if (ca->mi.group)
786 bch2_disk_path_to_text(out, c, ca->mi.group - 1);
787 prt_char(out, '\n');
788 }
789
790 if (attr == &sysfs_has_data) {
791 prt_bitflags(out, __bch2_data_types, bch2_dev_has_data(c, ca));
792 prt_char(out, '\n');
793 }
794
795 if (attr == &sysfs_io_done)
796 dev_io_done_to_text(out, ca);
797
798 if (attr == &sysfs_io_errors)
799 bch2_dev_io_errors_to_text(out, ca);
800
801 sysfs_print(io_latency_read, atomic64_read(&ca->cur_latency[READ]));
802 sysfs_print(io_latency_write, atomic64_read(&ca->cur_latency[WRITE]));
803
804 if (attr == &sysfs_io_latency_stats_read)
805 bch2_time_stats_to_text(out, &ca->io_latency[READ].stats);
806
807 if (attr == &sysfs_io_latency_stats_write)
808 bch2_time_stats_to_text(out, &ca->io_latency[WRITE].stats);
809
810 sysfs_printf(congested, "%u%%",
811 clamp(atomic_read(&ca->congested), 0, CONGESTED_MAX)
812 * 100 / CONGESTED_MAX);
813
814 if (attr == &sysfs_alloc_debug)
815 bch2_dev_alloc_debug_to_text(out, ca);
816
817 if (attr == &sysfs_open_buckets)
818 bch2_open_buckets_to_text(out, c, ca);
819
820 int opt_id = bch2_opt_lookup(attr->name);
821 if (opt_id >= 0)
822 return sysfs_opt_show(c, ca, opt_id, out);
823
824 return 0;
825 }
826
STORE(bch2_dev)827 STORE(bch2_dev)
828 {
829 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj);
830 struct bch_fs *c = ca->fs;
831
832 if (attr == &sysfs_label) {
833 char *tmp;
834 int ret;
835
836 tmp = kstrdup(buf, GFP_KERNEL);
837 if (!tmp)
838 return -ENOMEM;
839
840 ret = bch2_dev_group_set(c, ca, strim(tmp));
841 kfree(tmp);
842 if (ret)
843 return ret;
844 }
845
846 if (attr == &sysfs_io_errors_reset)
847 bch2_dev_errors_reset(ca);
848
849 int opt_id = bch2_opt_lookup(attr->name);
850 if (opt_id >= 0)
851 return sysfs_opt_store(c, ca, opt_id, buf, size);
852
853 return size;
854 }
855 SYSFS_OPS(bch2_dev);
856
857 struct attribute *bch2_dev_files[] = {
858 &sysfs_uuid,
859 &sysfs_first_bucket,
860 &sysfs_nbuckets,
861
862 /* settings: */
863 &sysfs_label,
864
865 &sysfs_has_data,
866 &sysfs_io_done,
867 &sysfs_io_errors,
868 &sysfs_io_errors_reset,
869
870 &sysfs_io_latency_read,
871 &sysfs_io_latency_write,
872 &sysfs_io_latency_stats_read,
873 &sysfs_io_latency_stats_write,
874 &sysfs_congested,
875
876 /* debug: */
877 &sysfs_alloc_debug,
878 &sysfs_open_buckets,
879 NULL
880 };
881
882 #endif /* _BCACHEFS_SYSFS_H_ */
883