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 rw_attribute(gc_gens_pos);
150
151 read_attribute(uuid);
152 read_attribute(minor);
153 read_attribute(flags);
154 read_attribute(bucket_size);
155 read_attribute(first_bucket);
156 read_attribute(nbuckets);
157 rw_attribute(durability);
158 read_attribute(io_done);
159 read_attribute(io_errors);
160 write_attribute(io_errors_reset);
161
162 read_attribute(io_latency_read);
163 read_attribute(io_latency_write);
164 read_attribute(io_latency_stats_read);
165 read_attribute(io_latency_stats_write);
166 read_attribute(congested);
167
168 read_attribute(btree_write_stats);
169
170 read_attribute(btree_cache_size);
171 read_attribute(compression_stats);
172 read_attribute(journal_debug);
173 read_attribute(btree_cache);
174 read_attribute(btree_key_cache);
175 read_attribute(btree_reserve_cache);
176 read_attribute(stripes_heap);
177 read_attribute(open_buckets);
178 read_attribute(open_buckets_partial);
179 read_attribute(write_points);
180 read_attribute(nocow_lock_table);
181
182 #ifdef BCH_WRITE_REF_DEBUG
183 read_attribute(write_refs);
184
185 static const char * const bch2_write_refs[] = {
186 #define x(n) #n,
187 BCH_WRITE_REFS()
188 #undef x
189 NULL
190 };
191
bch2_write_refs_to_text(struct printbuf * out,struct bch_fs * c)192 static 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
201 read_attribute(internal_uuid);
202 read_attribute(disk_groups);
203
204 read_attribute(has_data);
205 read_attribute(alloc_debug);
206 read_attribute(accounting);
207 read_attribute(usage_base);
208
209 #define x(t, n, ...) read_attribute(t);
210 BCH_PERSISTENT_COUNTERS()
211 #undef x
212
213 rw_attribute(discard);
214 rw_attribute(label);
215
216 rw_attribute(copy_gc_enabled);
217 read_attribute(copy_gc_wait);
218
219 rw_attribute(rebalance_enabled);
220 sysfs_pd_controller_attribute(rebalance);
221 read_attribute(rebalance_status);
222
223 read_attribute(new_stripes);
224
225 read_attribute(io_timers_read);
226 read_attribute(io_timers_write);
227
228 read_attribute(moving_ctxts);
229
230 #ifdef CONFIG_BCACHEFS_TESTS
231 write_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
240 static struct attribute sysfs_state_rw = {
241 .name = "state",
242 .mode = 0444,
243 };
244
bch2_btree_cache_size(struct bch_fs * c)245 static 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
bch2_compression_stats_to_text(struct printbuf * out,struct bch_fs * c)262 static 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
bch2_gc_gens_pos_to_text(struct printbuf * out,struct bch_fs * c)303 static 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
bch2_fs_usage_base_to_text(struct printbuf * out,struct bch_fs * c)310 static 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
SHOW(bch2_fs)324 SHOW(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
STORE(bch2_fs)417 STORE(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 }
510 SYSFS_OPS(bch2_fs);
511
512 struct 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
SHOW(bch2_fs_counters)529 SHOW(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
STORE(bch2_fs_counters)554 STORE(bch2_fs_counters) {
555 return 0;
556 }
557
558 SYSFS_OPS(bch2_fs_counters);
559
560 struct 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
SHOW(bch2_fs_internal)569 SHOW(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
STORE(bch2_fs_internal)576 STORE(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 }
582 SYSFS_OPS(bch2_fs_internal);
583
584 struct 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
SHOW(bch2_fs_opts_dir)632 SHOW(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
STORE(bch2_fs_opts_dir)645 STORE(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;
686 err:
687 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs);
688 return ret;
689 }
690 SYSFS_OPS(bch2_fs_opts_dir);
691
692 struct attribute *bch2_fs_opts_dir_files[] = { NULL };
693
bch2_opts_create_sysfs_files(struct kobject * kobj)694 int 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
SHOW(bch2_fs_time_stats)715 SHOW(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
STORE(bch2_fs_time_stats)728 STORE(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 }
739 SYSFS_OPS(bch2_fs_time_stats);
740
741 struct 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
749 static const char * const bch2_rw[] = {
750 "read",
751 "write",
752 NULL
753 };
754
dev_io_done_to_text(struct printbuf * out,struct bch_dev * ca)755 static 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
SHOW(bch2_dev)769 SHOW(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
STORE(bch2_dev)826 STORE(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 }
862 SYSFS_OPS(bch2_dev);
863
864 struct 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_ */
894