1 // SPDX-License-Identifier: GPL-2.0
3 * bcache sysfs interfaces
5 * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com>
6 * Copyright 2012 Google, Inc.
9 #ifndef NO_BCACHEFS_SYSFS
12 #include "alloc_background.h"
14 #include "btree_cache.h"
16 #include "btree_iter.h"
17 #include "btree_key_cache.h"
18 #include "btree_update.h"
19 #include "btree_update_interior.h"
23 #include "disk_groups.h"
30 #include "rebalance.h"
35 #include <linux/blkdev.h>
36 #include <linux/sort.h>
37 #include <linux/sched/clock.h>
41 #define SYSFS_OPS(type) \
42 struct sysfs_ops type ## _sysfs_ops = { \
43 .show = type ## _show, \
44 .store = type ## _store \
48 static ssize_t fn ## _show(struct kobject *kobj, struct attribute *attr,\
52 static ssize_t fn ## _store(struct kobject *kobj, struct attribute *attr,\
53 const char *buf, size_t size) \
55 #define __sysfs_attribute(_name, _mode) \
56 static struct attribute sysfs_##_name = \
57 { .name = #_name, .mode = _mode }
59 #define write_attribute(n) __sysfs_attribute(n, S_IWUSR)
60 #define read_attribute(n) __sysfs_attribute(n, S_IRUGO)
61 #define rw_attribute(n) __sysfs_attribute(n, S_IRUGO|S_IWUSR)
63 #define sysfs_printf(file, fmt, ...) \
65 if (attr == &sysfs_ ## file) \
66 return scnprintf(buf, PAGE_SIZE, fmt "\n", __VA_ARGS__);\
69 #define sysfs_print(file, var) \
71 if (attr == &sysfs_ ## file) \
72 return snprint(buf, PAGE_SIZE, var); \
75 #define sysfs_hprint(file, val) \
77 if (attr == &sysfs_ ## file) { \
78 bch2_hprint(&out, val); \
80 return out.pos - buf; \
84 #define var_printf(_var, fmt) sysfs_printf(_var, fmt, var(_var))
85 #define var_print(_var) sysfs_print(_var, var(_var))
86 #define var_hprint(_var) sysfs_hprint(_var, var(_var))
88 #define sysfs_strtoul(file, var) \
90 if (attr == &sysfs_ ## file) \
91 return strtoul_safe(buf, var) ?: (ssize_t) size; \
94 #define sysfs_strtoul_clamp(file, var, min, max) \
96 if (attr == &sysfs_ ## file) \
97 return strtoul_safe_clamp(buf, var, min, max) \
101 #define strtoul_or_return(cp) \
104 int _r = kstrtoul(cp, 10, &_v); \
110 #define strtoul_restrict_or_return(cp, min, max) \
112 unsigned long __v = 0; \
113 int _r = strtoul_safe_restrict(cp, __v, min, max); \
119 #define strtoi_h_or_return(cp) \
122 int _r = strtoi_h(cp, &_v); \
128 #define sysfs_hatoi(file, var) \
130 if (attr == &sysfs_ ## file) \
131 return strtoi_h(buf, &var) ?: (ssize_t) size; \
134 write_attribute(trigger_journal_flush);
135 write_attribute(trigger_btree_coalesce);
136 write_attribute(trigger_gc);
137 write_attribute(prune_cache);
138 rw_attribute(btree_gc_periodic);
140 read_attribute(uuid);
141 read_attribute(minor);
142 read_attribute(bucket_size);
143 read_attribute(block_size);
144 read_attribute(btree_node_size);
145 read_attribute(first_bucket);
146 read_attribute(nbuckets);
147 read_attribute(durability);
148 read_attribute(iodone);
150 read_attribute(io_latency_read);
151 read_attribute(io_latency_write);
152 read_attribute(io_latency_stats_read);
153 read_attribute(io_latency_stats_write);
154 read_attribute(congested);
156 read_attribute(btree_avg_write_size);
158 read_attribute(bucket_quantiles_last_read);
159 read_attribute(bucket_quantiles_last_write);
160 read_attribute(bucket_quantiles_fragmentation);
161 read_attribute(bucket_quantiles_oldest_gen);
163 read_attribute(reserve_stats);
164 read_attribute(btree_cache_size);
165 read_attribute(compression_stats);
166 read_attribute(journal_debug);
167 read_attribute(journal_pins);
168 read_attribute(btree_updates);
169 read_attribute(dirty_btree_nodes);
170 read_attribute(btree_cache);
171 read_attribute(btree_key_cache);
172 read_attribute(btree_transactions);
173 read_attribute(stripes_heap);
175 read_attribute(internal_uuid);
177 read_attribute(has_data);
178 read_attribute(alloc_debug);
179 write_attribute(wake_allocator);
181 read_attribute(read_realloc_races);
182 read_attribute(extent_migrate_done);
183 read_attribute(extent_migrate_raced);
185 rw_attribute(journal_write_delay_ms);
186 rw_attribute(journal_reclaim_delay_ms);
188 rw_attribute(discard);
189 rw_attribute(cache_replacement_policy);
192 rw_attribute(copy_gc_enabled);
193 sysfs_pd_controller_attribute(copy_gc);
195 rw_attribute(rebalance_enabled);
196 sysfs_pd_controller_attribute(rebalance);
197 read_attribute(rebalance_work);
198 rw_attribute(promote_whole_extents);
200 read_attribute(new_stripes);
202 rw_attribute(pd_controllers_update_seconds);
204 read_attribute(io_timers_read);
205 read_attribute(io_timers_write);
207 #ifdef CONFIG_BCACHEFS_TESTS
208 write_attribute(perf_test);
209 #endif /* CONFIG_BCACHEFS_TESTS */
212 static struct attribute sysfs_time_stat_##_name = \
213 { .name = #_name, .mode = S_IRUGO };
217 static struct attribute sysfs_state_rw = {
222 static size_t bch2_btree_cache_size(struct bch_fs *c)
227 mutex_lock(&c->btree_cache.lock);
228 list_for_each_entry(b, &c->btree_cache.live, list)
229 ret += btree_bytes(c);
231 mutex_unlock(&c->btree_cache.lock);
235 static size_t bch2_btree_avg_write_size(struct bch_fs *c)
237 u64 nr = atomic64_read(&c->btree_writes_nr);
238 u64 sectors = atomic64_read(&c->btree_writes_sectors);
240 return nr ? div64_u64(sectors, nr) : 0;
243 static int fs_alloc_debug_to_text(struct printbuf *out, struct bch_fs *c)
245 struct bch_fs_usage_online *fs_usage = bch2_fs_usage_read(c);
250 bch2_fs_usage_to_text(out, c, fs_usage);
252 percpu_up_read(&c->mark_lock);
258 static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c)
260 struct btree_trans trans;
261 struct btree_iter *iter;
263 u64 nr_uncompressed_extents = 0, uncompressed_sectors = 0,
264 nr_compressed_extents = 0,
265 compressed_sectors_compressed = 0,
266 compressed_sectors_uncompressed = 0;
269 if (!test_bit(BCH_FS_STARTED, &c->flags))
272 bch2_trans_init(&trans, c, 0, 0);
274 for_each_btree_key(&trans, iter, BTREE_ID_extents, POS_MIN, 0, k, ret)
275 if (k.k->type == KEY_TYPE_extent) {
276 struct bkey_s_c_extent e = bkey_s_c_to_extent(k);
277 const union bch_extent_entry *entry;
278 struct extent_ptr_decoded p;
280 extent_for_each_ptr_decode(e, p, entry) {
281 if (!crc_is_compressed(p.crc)) {
282 nr_uncompressed_extents++;
283 uncompressed_sectors += e.k->size;
285 nr_compressed_extents++;
286 compressed_sectors_compressed +=
287 p.crc.compressed_size;
288 compressed_sectors_uncompressed +=
289 p.crc.uncompressed_size;
292 /* only looking at the first ptr */
297 ret = bch2_trans_exit(&trans) ?: ret;
302 "uncompressed data:\n"
303 " nr extents: %llu\n"
304 " size (bytes): %llu\n"
306 " nr extents: %llu\n"
307 " compressed size (bytes): %llu\n"
308 " uncompressed size (bytes): %llu\n",
309 nr_uncompressed_extents,
310 uncompressed_sectors << 9,
311 nr_compressed_extents,
312 compressed_sectors_compressed << 9,
313 compressed_sectors_uncompressed << 9);
319 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj);
320 struct printbuf out = _PBUF(buf, PAGE_SIZE);
322 sysfs_print(minor, c->minor);
323 sysfs_printf(internal_uuid, "%pU", c->sb.uuid.b);
325 sysfs_print(journal_write_delay_ms, c->journal.write_delay_ms);
326 sysfs_print(journal_reclaim_delay_ms, c->journal.reclaim_delay_ms);
328 sysfs_print(block_size, block_bytes(c));
329 sysfs_print(btree_node_size, btree_bytes(c));
330 sysfs_hprint(btree_cache_size, bch2_btree_cache_size(c));
331 sysfs_hprint(btree_avg_write_size, bch2_btree_avg_write_size(c));
333 sysfs_print(read_realloc_races,
334 atomic_long_read(&c->read_realloc_races));
335 sysfs_print(extent_migrate_done,
336 atomic_long_read(&c->extent_migrate_done));
337 sysfs_print(extent_migrate_raced,
338 atomic_long_read(&c->extent_migrate_raced));
340 sysfs_printf(btree_gc_periodic, "%u", (int) c->btree_gc_periodic);
342 sysfs_printf(copy_gc_enabled, "%i", c->copy_gc_enabled);
344 sysfs_print(pd_controllers_update_seconds,
345 c->pd_controllers_update_seconds);
347 sysfs_printf(rebalance_enabled, "%i", c->rebalance.enabled);
348 sysfs_pd_controller_show(rebalance, &c->rebalance.pd); /* XXX */
349 sysfs_pd_controller_show(copy_gc, &c->copygc_pd);
351 if (attr == &sysfs_rebalance_work) {
352 bch2_rebalance_work_to_text(&out, c);
353 return out.pos - buf;
356 sysfs_print(promote_whole_extents, c->promote_whole_extents);
360 if (attr == &sysfs_alloc_debug)
361 return fs_alloc_debug_to_text(&out, c) ?: out.pos - buf;
363 if (attr == &sysfs_journal_debug) {
364 bch2_journal_debug_to_text(&out, &c->journal);
365 return out.pos - buf;
368 if (attr == &sysfs_journal_pins) {
369 bch2_journal_pins_to_text(&out, &c->journal);
370 return out.pos - buf;
373 if (attr == &sysfs_btree_updates) {
374 bch2_btree_updates_to_text(&out, c);
375 return out.pos - buf;
378 if (attr == &sysfs_dirty_btree_nodes) {
379 bch2_dirty_btree_nodes_to_text(&out, c);
380 return out.pos - buf;
383 if (attr == &sysfs_btree_cache) {
384 bch2_btree_cache_to_text(&out, c);
385 return out.pos - buf;
388 if (attr == &sysfs_btree_key_cache) {
389 bch2_btree_key_cache_to_text(&out, &c->btree_key_cache);
390 return out.pos - buf;
393 if (attr == &sysfs_btree_transactions) {
394 bch2_btree_trans_to_text(&out, c);
395 return out.pos - buf;
398 if (attr == &sysfs_stripes_heap) {
399 bch2_stripes_heap_to_text(&out, c);
400 return out.pos - buf;
403 if (attr == &sysfs_compression_stats) {
404 bch2_compression_stats_to_text(&out, c);
405 return out.pos - buf;
408 if (attr == &sysfs_new_stripes) {
409 bch2_new_stripes_to_text(&out, c);
410 return out.pos - buf;
413 if (attr == &sysfs_io_timers_read) {
414 bch2_io_timers_to_text(&out, &c->io_clock[READ]);
415 return out.pos - buf;
417 if (attr == &sysfs_io_timers_write) {
418 bch2_io_timers_to_text(&out, &c->io_clock[WRITE]);
419 return out.pos - buf;
427 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj);
429 sysfs_strtoul(journal_write_delay_ms, c->journal.write_delay_ms);
430 sysfs_strtoul(journal_reclaim_delay_ms, c->journal.reclaim_delay_ms);
432 if (attr == &sysfs_btree_gc_periodic) {
433 ssize_t ret = strtoul_safe(buf, c->btree_gc_periodic)
436 wake_up_process(c->gc_thread);
440 if (attr == &sysfs_copy_gc_enabled) {
441 ssize_t ret = strtoul_safe(buf, c->copy_gc_enabled)
444 if (c->copygc_thread)
445 wake_up_process(c->copygc_thread);
449 if (attr == &sysfs_rebalance_enabled) {
450 ssize_t ret = strtoul_safe(buf, c->rebalance.enabled)
457 sysfs_strtoul(pd_controllers_update_seconds,
458 c->pd_controllers_update_seconds);
459 sysfs_pd_controller_store(rebalance, &c->rebalance.pd);
460 sysfs_pd_controller_store(copy_gc, &c->copygc_pd);
462 sysfs_strtoul(promote_whole_extents, c->promote_whole_extents);
466 if (!test_bit(BCH_FS_STARTED, &c->flags))
471 if (attr == &sysfs_trigger_journal_flush)
472 bch2_journal_meta(&c->journal);
474 if (attr == &sysfs_trigger_btree_coalesce)
477 if (attr == &sysfs_trigger_gc) {
479 * Full gc is currently incompatible with btree key cache:
482 down_read(&c->state_lock);
483 bch2_gc(c, false, false);
484 up_read(&c->state_lock);
490 if (attr == &sysfs_prune_cache) {
491 struct shrink_control sc;
493 sc.gfp_mask = GFP_KERNEL;
494 sc.nr_to_scan = strtoul_or_return(buf);
495 c->btree_cache.shrink.scan_objects(&c->btree_cache.shrink, &sc);
498 #ifdef CONFIG_BCACHEFS_TESTS
499 if (attr == &sysfs_perf_test) {
500 char *tmp = kstrdup(buf, GFP_KERNEL), *p = tmp;
501 char *test = strsep(&p, " \t\n");
502 char *nr_str = strsep(&p, " \t\n");
503 char *threads_str = strsep(&p, " \t\n");
509 !(ret = kstrtouint(threads_str, 10, &threads)) &&
510 !(ret = bch2_strtoull_h(nr_str, &nr)))
511 ret = bch2_btree_perf_test(c, test, nr, threads);
522 struct attribute *bch2_fs_files[] = {
525 &sysfs_btree_node_size,
526 &sysfs_btree_cache_size,
527 &sysfs_btree_avg_write_size,
529 &sysfs_journal_write_delay_ms,
530 &sysfs_journal_reclaim_delay_ms,
532 &sysfs_promote_whole_extents,
534 &sysfs_compression_stats,
536 #ifdef CONFIG_BCACHEFS_TESTS
542 /* internal dir - just a wrapper */
544 SHOW(bch2_fs_internal)
546 struct bch_fs *c = container_of(kobj, struct bch_fs, internal);
547 return bch2_fs_show(&c->kobj, attr, buf);
550 STORE(bch2_fs_internal)
552 struct bch_fs *c = container_of(kobj, struct bch_fs, internal);
553 return bch2_fs_store(&c->kobj, attr, buf, size);
555 SYSFS_OPS(bch2_fs_internal);
557 struct attribute *bch2_fs_internal_files[] = {
559 &sysfs_journal_debug,
561 &sysfs_btree_updates,
562 &sysfs_dirty_btree_nodes,
564 &sysfs_btree_key_cache,
565 &sysfs_btree_transactions,
568 &sysfs_read_realloc_races,
569 &sysfs_extent_migrate_done,
570 &sysfs_extent_migrate_raced,
572 &sysfs_trigger_journal_flush,
573 &sysfs_trigger_btree_coalesce,
577 &sysfs_copy_gc_enabled,
579 &sysfs_rebalance_enabled,
580 &sysfs_rebalance_work,
581 sysfs_pd_controller_files(rebalance),
582 sysfs_pd_controller_files(copy_gc),
586 &sysfs_io_timers_read,
587 &sysfs_io_timers_write,
589 &sysfs_internal_uuid,
595 SHOW(bch2_fs_opts_dir)
597 struct printbuf out = _PBUF(buf, PAGE_SIZE);
598 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir);
599 const struct bch_option *opt = container_of(attr, struct bch_option, attr);
600 int id = opt - bch2_opt_table;
601 u64 v = bch2_opt_get_by_id(&c->opts, id);
603 bch2_opt_to_text(&out, c, opt, v, OPT_SHOW_FULL_LIST);
606 return out.pos - buf;
609 STORE(bch2_fs_opts_dir)
611 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir);
612 const struct bch_option *opt = container_of(attr, struct bch_option, attr);
613 int ret, id = opt - bch2_opt_table;
617 tmp = kstrdup(buf, GFP_KERNEL);
621 ret = bch2_opt_parse(c, opt, strim(tmp), &v);
627 ret = bch2_opt_check_may_set(c, id, v);
631 if (opt->set_sb != SET_NO_SB_OPT) {
632 mutex_lock(&c->sb_lock);
633 opt->set_sb(c->disk_sb.sb, v);
635 mutex_unlock(&c->sb_lock);
638 bch2_opt_set_by_id(&c->opts, id, v);
640 if ((id == Opt_background_target ||
641 id == Opt_background_compression) && v) {
642 bch2_rebalance_add_work(c, S64_MAX);
648 SYSFS_OPS(bch2_fs_opts_dir);
650 struct attribute *bch2_fs_opts_dir_files[] = { NULL };
652 int bch2_opts_create_sysfs_files(struct kobject *kobj)
654 const struct bch_option *i;
657 for (i = bch2_opt_table;
658 i < bch2_opt_table + bch2_opts_nr;
660 if (!(i->mode & (OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME)))
663 ret = sysfs_create_file(kobj, &i->attr);
673 SHOW(bch2_fs_time_stats)
675 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats);
676 struct printbuf out = _PBUF(buf, PAGE_SIZE);
679 if (attr == &sysfs_time_stat_##name) { \
680 bch2_time_stats_to_text(&out, &c->times[BCH_TIME_##name]);\
681 return out.pos - buf; \
689 STORE(bch2_fs_time_stats)
693 SYSFS_OPS(bch2_fs_time_stats);
695 struct attribute *bch2_fs_time_stats_files[] = {
697 &sysfs_time_stat_##name,
703 typedef unsigned (bucket_map_fn)(struct bch_fs *, struct bch_dev *,
706 static unsigned bucket_last_io_fn(struct bch_fs *c, struct bch_dev *ca,
707 size_t b, void *private)
709 int rw = (private ? 1 : 0);
711 return atomic64_read(&c->io_clock[rw].now) - bucket(ca, b)->io_time[rw];
714 static unsigned bucket_sectors_used_fn(struct bch_fs *c, struct bch_dev *ca,
715 size_t b, void *private)
717 struct bucket *g = bucket(ca, b);
718 return bucket_sectors_used(g->mark);
721 static unsigned bucket_oldest_gen_fn(struct bch_fs *c, struct bch_dev *ca,
722 size_t b, void *private)
724 return bucket_gc_gen(bucket(ca, b));
727 static int unsigned_cmp(const void *_l, const void *_r)
729 const unsigned *l = _l;
730 const unsigned *r = _r;
732 return cmp_int(*l, *r);
735 static int quantiles_to_text(struct printbuf *out,
736 struct bch_fs *c, struct bch_dev *ca,
737 bucket_map_fn *fn, void *private)
740 /* Compute 31 quantiles */
743 down_read(&ca->bucket_lock);
746 p = vzalloc(n * sizeof(unsigned));
748 up_read(&ca->bucket_lock);
752 for (i = ca->mi.first_bucket; i < n; i++)
753 p[i] = fn(c, ca, i, private);
755 sort(p, n, sizeof(unsigned), unsigned_cmp, NULL);
756 up_read(&ca->bucket_lock);
762 for (i = 0; i < ARRAY_SIZE(q); i++)
763 q[i] = p[n * (i + 1) / (ARRAY_SIZE(q) + 1)];
767 for (i = 0; i < ARRAY_SIZE(q); i++)
768 pr_buf(out, "%u ", q[i]);
773 static void reserve_stats_to_text(struct printbuf *out, struct bch_dev *ca)
775 enum alloc_reserve i;
777 spin_lock(&ca->fs->freelist_lock);
779 pr_buf(out, "free_inc:\t%zu\t%zu\n",
780 fifo_used(&ca->free_inc),
783 for (i = 0; i < RESERVE_NR; i++)
784 pr_buf(out, "free[%u]:\t%zu\t%zu\n", i,
785 fifo_used(&ca->free[i]),
788 spin_unlock(&ca->fs->freelist_lock);
791 static void dev_alloc_debug_to_text(struct printbuf *out, struct bch_dev *ca)
793 struct bch_fs *c = ca->fs;
794 struct bch_dev_usage stats = bch2_dev_usage_read(ca);
795 unsigned i, nr[BCH_DATA_NR];
797 memset(nr, 0, sizeof(nr));
799 for (i = 0; i < ARRAY_SIZE(c->open_buckets); i++)
800 nr[c->open_buckets[i].type]++;
803 "\t\t buckets\t sectors fragmented\n"
805 ca->mi.nbuckets - ca->mi.first_bucket);
807 for (i = 1; i < BCH_DATA_NR; i++)
808 pr_buf(out, "%-8s%16llu%16llu%16llu\n",
809 bch2_data_types[i], stats.d[i].buckets,
810 stats.d[i].sectors, stats.d[i].fragmented);
816 "free_inc\t\t%zu/%zu\n"
817 "free[RESERVE_MOVINGGC]\t%zu/%zu\n"
818 "free[RESERVE_NONE]\t%zu/%zu\n"
819 "freelist_wait\t\t%s\n"
820 "open buckets\t\t%u/%u (reserved %u)\n"
821 "open_buckets_wait\t%s\n"
822 "open_buckets_btree\t%u\n"
823 "open_buckets_user\t%u\n"
824 "btree reserve cache\t%u\n",
826 __dev_buckets_available(ca, stats),
827 fifo_used(&ca->free_inc), ca->free_inc.size,
828 fifo_used(&ca->free[RESERVE_MOVINGGC]), ca->free[RESERVE_MOVINGGC].size,
829 fifo_used(&ca->free[RESERVE_NONE]), ca->free[RESERVE_NONE].size,
830 c->freelist_wait.list.first ? "waiting" : "empty",
831 c->open_buckets_nr_free, OPEN_BUCKETS_COUNT,
832 BTREE_NODE_OPEN_BUCKET_RESERVE,
833 c->open_buckets_wait.list.first ? "waiting" : "empty",
836 c->btree_reserve_cache_nr);
839 static const char * const bch2_rw[] = {
845 static void dev_iodone_to_text(struct printbuf *out, struct bch_dev *ca)
849 for (rw = 0; rw < 2; rw++) {
850 pr_buf(out, "%s:\n", bch2_rw[rw]);
852 for (i = 1; i < BCH_DATA_NR; i++)
853 pr_buf(out, "%-12s:%12llu\n",
855 percpu_u64_get(&ca->io_done->sectors[rw][i]) << 9);
861 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj);
862 struct bch_fs *c = ca->fs;
863 struct printbuf out = _PBUF(buf, PAGE_SIZE);
865 sysfs_printf(uuid, "%pU\n", ca->uuid.b);
867 sysfs_print(bucket_size, bucket_bytes(ca));
868 sysfs_print(block_size, block_bytes(c));
869 sysfs_print(first_bucket, ca->mi.first_bucket);
870 sysfs_print(nbuckets, ca->mi.nbuckets);
871 sysfs_print(durability, ca->mi.durability);
872 sysfs_print(discard, ca->mi.discard);
874 if (attr == &sysfs_label) {
876 mutex_lock(&c->sb_lock);
877 bch2_disk_path_to_text(&out, &c->disk_sb,
879 mutex_unlock(&c->sb_lock);
883 return out.pos - buf;
886 if (attr == &sysfs_has_data) {
887 bch2_flags_to_text(&out, bch2_data_types,
888 bch2_dev_has_data(c, ca));
890 return out.pos - buf;
893 if (attr == &sysfs_cache_replacement_policy) {
894 bch2_string_opt_to_text(&out,
895 bch2_cache_replacement_policies,
898 return out.pos - buf;
901 if (attr == &sysfs_state_rw) {
902 bch2_string_opt_to_text(&out, bch2_member_states,
905 return out.pos - buf;
908 if (attr == &sysfs_iodone) {
909 dev_iodone_to_text(&out, ca);
910 return out.pos - buf;
913 sysfs_print(io_latency_read, atomic64_read(&ca->cur_latency[READ]));
914 sysfs_print(io_latency_write, atomic64_read(&ca->cur_latency[WRITE]));
916 if (attr == &sysfs_io_latency_stats_read) {
917 bch2_time_stats_to_text(&out, &ca->io_latency[READ]);
918 return out.pos - buf;
920 if (attr == &sysfs_io_latency_stats_write) {
921 bch2_time_stats_to_text(&out, &ca->io_latency[WRITE]);
922 return out.pos - buf;
925 sysfs_printf(congested, "%u%%",
926 clamp(atomic_read(&ca->congested), 0, CONGESTED_MAX)
927 * 100 / CONGESTED_MAX);
929 if (attr == &sysfs_bucket_quantiles_last_read)
930 return quantiles_to_text(&out, c, ca, bucket_last_io_fn, (void *) 0) ?: out.pos - buf;
931 if (attr == &sysfs_bucket_quantiles_last_write)
932 return quantiles_to_text(&out, c, ca, bucket_last_io_fn, (void *) 1) ?: out.pos - buf;
933 if (attr == &sysfs_bucket_quantiles_fragmentation)
934 return quantiles_to_text(&out, c, ca, bucket_sectors_used_fn, NULL) ?: out.pos - buf;
935 if (attr == &sysfs_bucket_quantiles_oldest_gen)
936 return quantiles_to_text(&out, c, ca, bucket_oldest_gen_fn, NULL) ?: out.pos - buf;
938 if (attr == &sysfs_reserve_stats) {
939 reserve_stats_to_text(&out, ca);
940 return out.pos - buf;
942 if (attr == &sysfs_alloc_debug) {
943 dev_alloc_debug_to_text(&out, ca);
944 return out.pos - buf;
952 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj);
953 struct bch_fs *c = ca->fs;
954 struct bch_member *mi;
956 if (attr == &sysfs_discard) {
957 bool v = strtoul_or_return(buf);
959 mutex_lock(&c->sb_lock);
960 mi = &bch2_sb_get_members(c->disk_sb.sb)->members[ca->dev_idx];
962 if (v != BCH_MEMBER_DISCARD(mi)) {
963 SET_BCH_MEMBER_DISCARD(mi, v);
966 mutex_unlock(&c->sb_lock);
969 if (attr == &sysfs_cache_replacement_policy) {
970 ssize_t v = __sysfs_match_string(bch2_cache_replacement_policies, -1, buf);
975 mutex_lock(&c->sb_lock);
976 mi = &bch2_sb_get_members(c->disk_sb.sb)->members[ca->dev_idx];
978 if ((unsigned) v != BCH_MEMBER_REPLACEMENT(mi)) {
979 SET_BCH_MEMBER_REPLACEMENT(mi, v);
982 mutex_unlock(&c->sb_lock);
985 if (attr == &sysfs_label) {
989 tmp = kstrdup(buf, GFP_KERNEL);
993 ret = bch2_dev_group_set(c, ca, strim(tmp));
999 if (attr == &sysfs_wake_allocator)
1000 bch2_wake_allocator(ca);
1004 SYSFS_OPS(bch2_dev);
1006 struct attribute *bch2_dev_files[] = {
1010 &sysfs_first_bucket,
1016 &sysfs_cache_replacement_policy,
1023 &sysfs_io_latency_read,
1024 &sysfs_io_latency_write,
1025 &sysfs_io_latency_stats_read,
1026 &sysfs_io_latency_stats_write,
1029 /* alloc info - other stats: */
1030 &sysfs_bucket_quantiles_last_read,
1031 &sysfs_bucket_quantiles_last_write,
1032 &sysfs_bucket_quantiles_fragmentation,
1033 &sysfs_bucket_quantiles_oldest_gen,
1035 &sysfs_reserve_stats,
1039 &sysfs_wake_allocator,
1043 #endif /* _BCACHEFS_SYSFS_H_ */