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"
13 #include "alloc_foreground.h"
15 #include "btree_cache.h"
17 #include "btree_iter.h"
18 #include "btree_key_cache.h"
19 #include "btree_update.h"
20 #include "btree_update_interior.h"
24 #include "disk_groups.h"
31 #include "nocow_locking.h"
33 #include "rebalance.h"
38 #include <linux/blkdev.h>
39 #include <linux/sort.h>
40 #include <linux/sched/clock.h>
44 #define SYSFS_OPS(type) \
45 const struct sysfs_ops type ## _sysfs_ops = { \
46 .show = type ## _show, \
47 .store = type ## _store \
51 static ssize_t fn ## _to_text(struct printbuf *, \
52 struct kobject *, struct attribute *); \
54 static ssize_t fn ## _show(struct kobject *kobj, struct attribute *attr,\
57 struct printbuf out = PRINTBUF; \
58 ssize_t ret = fn ## _to_text(&out, kobj, attr); \
60 if (out.pos && out.buf[out.pos - 1] != '\n') \
63 if (!ret && out.allocation_failure) \
67 ret = min_t(size_t, out.pos, PAGE_SIZE - 1); \
68 memcpy(buf, out.buf, ret); \
70 printbuf_exit(&out); \
71 return bch2_err_class(ret); \
74 static ssize_t fn ## _to_text(struct printbuf *out, struct kobject *kobj,\
75 struct attribute *attr)
78 static ssize_t fn ## _store_inner(struct kobject *, struct attribute *,\
79 const char *, size_t); \
81 static ssize_t fn ## _store(struct kobject *kobj, struct attribute *attr,\
82 const char *buf, size_t size) \
84 return bch2_err_class(fn##_store_inner(kobj, attr, buf, size)); \
87 static ssize_t fn ## _store_inner(struct kobject *kobj, struct attribute *attr,\
88 const char *buf, size_t size)
90 #define __sysfs_attribute(_name, _mode) \
91 static struct attribute sysfs_##_name = \
92 { .name = #_name, .mode = _mode }
94 #define write_attribute(n) __sysfs_attribute(n, 0200)
95 #define read_attribute(n) __sysfs_attribute(n, 0444)
96 #define rw_attribute(n) __sysfs_attribute(n, 0644)
98 #define sysfs_printf(file, fmt, ...) \
100 if (attr == &sysfs_ ## file) \
101 prt_printf(out, fmt "\n", __VA_ARGS__); \
104 #define sysfs_print(file, var) \
106 if (attr == &sysfs_ ## file) \
110 #define sysfs_hprint(file, val) \
112 if (attr == &sysfs_ ## file) \
113 prt_human_readable_s64(out, val); \
116 #define var_printf(_var, fmt) sysfs_printf(_var, fmt, var(_var))
117 #define var_print(_var) sysfs_print(_var, var(_var))
118 #define var_hprint(_var) sysfs_hprint(_var, var(_var))
120 #define sysfs_strtoul(file, var) \
122 if (attr == &sysfs_ ## file) \
123 return strtoul_safe(buf, var) ?: (ssize_t) size; \
126 #define sysfs_strtoul_clamp(file, var, min, max) \
128 if (attr == &sysfs_ ## file) \
129 return strtoul_safe_clamp(buf, var, min, max) \
133 #define strtoul_or_return(cp) \
136 int _r = kstrtoul(cp, 10, &_v); \
142 #define strtoul_restrict_or_return(cp, min, max) \
144 unsigned long __v = 0; \
145 int _r = strtoul_safe_restrict(cp, __v, min, max); \
151 #define strtoi_h_or_return(cp) \
154 int _r = strtoi_h(cp, &_v); \
160 #define sysfs_hatoi(file, var) \
162 if (attr == &sysfs_ ## file) \
163 return strtoi_h(buf, &var) ?: (ssize_t) size; \
166 write_attribute(trigger_gc);
167 write_attribute(trigger_discards);
168 write_attribute(trigger_invalidates);
169 write_attribute(prune_cache);
170 write_attribute(btree_wakeup);
171 rw_attribute(btree_gc_periodic);
172 rw_attribute(gc_gens_pos);
174 read_attribute(uuid);
175 read_attribute(minor);
176 read_attribute(bucket_size);
177 read_attribute(first_bucket);
178 read_attribute(nbuckets);
179 rw_attribute(durability);
180 read_attribute(iodone);
182 read_attribute(io_latency_read);
183 read_attribute(io_latency_write);
184 read_attribute(io_latency_stats_read);
185 read_attribute(io_latency_stats_write);
186 read_attribute(congested);
188 read_attribute(btree_write_stats);
190 read_attribute(btree_cache_size);
191 read_attribute(compression_stats);
192 read_attribute(journal_debug);
193 read_attribute(btree_updates);
194 read_attribute(btree_cache);
195 read_attribute(btree_key_cache);
196 read_attribute(stripes_heap);
197 read_attribute(open_buckets);
198 read_attribute(open_buckets_partial);
199 read_attribute(write_points);
200 read_attribute(nocow_lock_table);
202 #ifdef BCH_WRITE_REF_DEBUG
203 read_attribute(write_refs);
205 static const char * const bch2_write_refs[] = {
212 static void bch2_write_refs_to_text(struct printbuf *out, struct bch_fs *c)
214 bch2_printbuf_tabstop_push(out, 24);
216 for (unsigned i = 0; i < ARRAY_SIZE(c->writes); i++) {
217 prt_str(out, bch2_write_refs[i]);
219 prt_printf(out, "%li", atomic_long_read(&c->writes[i]));
225 read_attribute(internal_uuid);
226 read_attribute(disk_groups);
228 read_attribute(has_data);
229 read_attribute(alloc_debug);
231 #define x(t, n, ...) read_attribute(t);
232 BCH_PERSISTENT_COUNTERS()
235 rw_attribute(discard);
238 rw_attribute(copy_gc_enabled);
239 read_attribute(copy_gc_wait);
241 rw_attribute(rebalance_enabled);
242 sysfs_pd_controller_attribute(rebalance);
243 read_attribute(rebalance_work);
244 rw_attribute(promote_whole_extents);
246 read_attribute(new_stripes);
248 read_attribute(io_timers_read);
249 read_attribute(io_timers_write);
251 read_attribute(data_jobs);
252 read_attribute(moving_ctxts);
254 #ifdef CONFIG_BCACHEFS_TESTS
255 write_attribute(perf_test);
256 #endif /* CONFIG_BCACHEFS_TESTS */
259 static struct attribute sysfs_time_stat_##_name = \
260 { .name = #_name, .mode = 0444 };
264 static struct attribute sysfs_state_rw = {
269 static size_t bch2_btree_cache_size(struct bch_fs *c)
274 mutex_lock(&c->btree_cache.lock);
275 list_for_each_entry(b, &c->btree_cache.live, list)
276 ret += btree_bytes(c);
278 mutex_unlock(&c->btree_cache.lock);
282 static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c)
284 struct btree_trans trans;
285 struct btree_iter iter;
288 u64 nr_uncompressed_extents = 0,
289 nr_compressed_extents = 0,
290 nr_incompressible_extents = 0,
291 uncompressed_sectors = 0,
292 incompressible_sectors = 0,
293 compressed_sectors_compressed = 0,
294 compressed_sectors_uncompressed = 0;
297 if (!test_bit(BCH_FS_STARTED, &c->flags))
300 bch2_trans_init(&trans, c, 0, 0);
302 for (id = 0; id < BTREE_ID_NR; id++) {
303 if (!btree_type_has_ptrs(id))
306 for_each_btree_key(&trans, iter, id, POS_MIN,
307 BTREE_ITER_ALL_SNAPSHOTS, k, ret) {
308 struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
309 const union bch_extent_entry *entry;
310 struct extent_ptr_decoded p;
311 bool compressed = false, uncompressed = false, incompressible = false;
313 bkey_for_each_ptr_decode(k.k, ptrs, p, entry) {
314 switch (p.crc.compression_type) {
315 case BCH_COMPRESSION_TYPE_none:
317 uncompressed_sectors += k.k->size;
319 case BCH_COMPRESSION_TYPE_incompressible:
320 incompressible = true;
321 incompressible_sectors += k.k->size;
324 compressed_sectors_compressed +=
325 p.crc.compressed_size;
326 compressed_sectors_uncompressed +=
327 p.crc.uncompressed_size;
334 nr_incompressible_extents++;
335 else if (uncompressed)
336 nr_uncompressed_extents++;
338 nr_compressed_extents++;
340 bch2_trans_iter_exit(&trans, &iter);
343 bch2_trans_exit(&trans);
348 prt_printf(out, "uncompressed:\n");
349 prt_printf(out, " nr extents: %llu\n", nr_uncompressed_extents);
350 prt_printf(out, " size: ");
351 prt_human_readable_u64(out, uncompressed_sectors << 9);
352 prt_printf(out, "\n");
354 prt_printf(out, "compressed:\n");
355 prt_printf(out, " nr extents: %llu\n", nr_compressed_extents);
356 prt_printf(out, " compressed size: ");
357 prt_human_readable_u64(out, compressed_sectors_compressed << 9);
358 prt_printf(out, "\n");
359 prt_printf(out, " uncompressed size: ");
360 prt_human_readable_u64(out, compressed_sectors_uncompressed << 9);
361 prt_printf(out, "\n");
363 prt_printf(out, "incompressible:\n");
364 prt_printf(out, " nr extents: %llu\n", nr_incompressible_extents);
365 prt_printf(out, " size: ");
366 prt_human_readable_u64(out, incompressible_sectors << 9);
367 prt_printf(out, "\n");
371 static void bch2_gc_gens_pos_to_text(struct printbuf *out, struct bch_fs *c)
373 prt_printf(out, "%s: ", bch2_btree_ids[c->gc_gens_btree]);
374 bch2_bpos_to_text(out, c->gc_gens_pos);
375 prt_printf(out, "\n");
378 static void bch2_btree_wakeup_all(struct bch_fs *c)
380 struct btree_trans *trans;
382 seqmutex_lock(&c->btree_trans_lock);
383 list_for_each_entry(trans, &c->btree_trans_list, list) {
384 struct btree_bkey_cached_common *b = READ_ONCE(trans->locking);
387 six_lock_wakeup_all(&b->lock);
390 seqmutex_unlock(&c->btree_trans_lock);
395 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj);
397 sysfs_print(minor, c->minor);
398 sysfs_printf(internal_uuid, "%pU", c->sb.uuid.b);
400 sysfs_hprint(btree_cache_size, bch2_btree_cache_size(c));
402 if (attr == &sysfs_btree_write_stats)
403 bch2_btree_write_stats_to_text(out, c);
405 sysfs_printf(btree_gc_periodic, "%u", (int) c->btree_gc_periodic);
407 if (attr == &sysfs_gc_gens_pos)
408 bch2_gc_gens_pos_to_text(out, c);
410 sysfs_printf(copy_gc_enabled, "%i", c->copy_gc_enabled);
412 sysfs_printf(rebalance_enabled, "%i", c->rebalance.enabled);
413 sysfs_pd_controller_show(rebalance, &c->rebalance.pd); /* XXX */
415 if (attr == &sysfs_copy_gc_wait)
416 bch2_copygc_wait_to_text(out, c);
418 if (attr == &sysfs_rebalance_work)
419 bch2_rebalance_work_to_text(out, c);
421 sysfs_print(promote_whole_extents, c->promote_whole_extents);
425 if (attr == &sysfs_journal_debug)
426 bch2_journal_debug_to_text(out, &c->journal);
428 if (attr == &sysfs_btree_updates)
429 bch2_btree_updates_to_text(out, c);
431 if (attr == &sysfs_btree_cache)
432 bch2_btree_cache_to_text(out, &c->btree_cache);
434 if (attr == &sysfs_btree_key_cache)
435 bch2_btree_key_cache_to_text(out, &c->btree_key_cache);
437 if (attr == &sysfs_stripes_heap)
438 bch2_stripes_heap_to_text(out, c);
440 if (attr == &sysfs_open_buckets)
441 bch2_open_buckets_to_text(out, c);
443 if (attr == &sysfs_open_buckets_partial)
444 bch2_open_buckets_partial_to_text(out, c);
446 if (attr == &sysfs_write_points)
447 bch2_write_points_to_text(out, c);
449 if (attr == &sysfs_compression_stats)
450 bch2_compression_stats_to_text(out, c);
452 if (attr == &sysfs_new_stripes)
453 bch2_new_stripes_to_text(out, c);
455 if (attr == &sysfs_io_timers_read)
456 bch2_io_timers_to_text(out, &c->io_clock[READ]);
458 if (attr == &sysfs_io_timers_write)
459 bch2_io_timers_to_text(out, &c->io_clock[WRITE]);
461 if (attr == &sysfs_data_jobs)
462 bch2_data_jobs_to_text(out, c);
464 if (attr == &sysfs_moving_ctxts)
465 bch2_fs_moving_ctxts_to_text(out, c);
467 #ifdef BCH_WRITE_REF_DEBUG
468 if (attr == &sysfs_write_refs)
469 bch2_write_refs_to_text(out, c);
472 if (attr == &sysfs_nocow_lock_table)
473 bch2_nocow_locks_to_text(out, &c->nocow_locks);
475 if (attr == &sysfs_disk_groups)
476 bch2_disk_groups_to_text(out, c);
483 struct bch_fs *c = container_of(kobj, struct bch_fs, kobj);
485 if (attr == &sysfs_btree_gc_periodic) {
486 ssize_t ret = strtoul_safe(buf, c->btree_gc_periodic)
489 wake_up_process(c->gc_thread);
493 if (attr == &sysfs_copy_gc_enabled) {
494 ssize_t ret = strtoul_safe(buf, c->copy_gc_enabled)
497 if (c->copygc_thread)
498 wake_up_process(c->copygc_thread);
502 if (attr == &sysfs_rebalance_enabled) {
503 ssize_t ret = strtoul_safe(buf, c->rebalance.enabled)
510 sysfs_pd_controller_store(rebalance, &c->rebalance.pd);
512 sysfs_strtoul(promote_whole_extents, c->promote_whole_extents);
516 if (!test_bit(BCH_FS_STARTED, &c->flags))
521 if (!test_bit(BCH_FS_RW, &c->flags))
524 if (attr == &sysfs_prune_cache) {
525 struct shrink_control sc;
527 sc.gfp_mask = GFP_KERNEL;
528 sc.nr_to_scan = strtoul_or_return(buf);
529 c->btree_cache.shrink.scan_objects(&c->btree_cache.shrink, &sc);
532 if (attr == &sysfs_btree_wakeup)
533 bch2_btree_wakeup_all(c);
535 if (attr == &sysfs_trigger_gc) {
537 * Full gc is currently incompatible with btree key cache:
540 down_read(&c->state_lock);
541 bch2_gc(c, false, false);
542 up_read(&c->state_lock);
548 if (attr == &sysfs_trigger_discards)
551 if (attr == &sysfs_trigger_invalidates)
552 bch2_do_invalidates(c);
554 #ifdef CONFIG_BCACHEFS_TESTS
555 if (attr == &sysfs_perf_test) {
556 char *tmp = kstrdup(buf, GFP_KERNEL), *p = tmp;
557 char *test = strsep(&p, " \t\n");
558 char *nr_str = strsep(&p, " \t\n");
559 char *threads_str = strsep(&p, " \t\n");
565 !(ret = kstrtouint(threads_str, 10, &threads)) &&
566 !(ret = bch2_strtoull_h(nr_str, &nr)))
567 ret = bch2_btree_perf_test(c, test, nr, threads);
578 struct attribute *bch2_fs_files[] = {
580 &sysfs_btree_cache_size,
581 &sysfs_btree_write_stats,
583 &sysfs_promote_whole_extents,
585 &sysfs_compression_stats,
587 #ifdef CONFIG_BCACHEFS_TESTS
595 SHOW(bch2_fs_counters)
597 struct bch_fs *c = container_of(kobj, struct bch_fs, counters_kobj);
599 u64 counter_since_mount = 0;
601 printbuf_tabstop_push(out, 32);
604 if (attr == &sysfs_##t) { \
605 counter = percpu_u64_get(&c->counters[BCH_COUNTER_##t]);\
606 counter_since_mount = counter - c->counters_on_mount[BCH_COUNTER_##t];\
607 prt_printf(out, "since mount:"); \
609 prt_human_readable_u64(out, counter_since_mount); \
612 prt_printf(out, "since filesystem creation:"); \
614 prt_human_readable_u64(out, counter); \
617 BCH_PERSISTENT_COUNTERS()
622 STORE(bch2_fs_counters) {
626 SYSFS_OPS(bch2_fs_counters);
628 struct attribute *bch2_fs_counters_files[] = {
631 BCH_PERSISTENT_COUNTERS()
635 /* internal dir - just a wrapper */
637 SHOW(bch2_fs_internal)
639 struct bch_fs *c = container_of(kobj, struct bch_fs, internal);
641 return bch2_fs_to_text(out, &c->kobj, attr);
644 STORE(bch2_fs_internal)
646 struct bch_fs *c = container_of(kobj, struct bch_fs, internal);
648 return bch2_fs_store(&c->kobj, attr, buf, size);
650 SYSFS_OPS(bch2_fs_internal);
652 struct attribute *bch2_fs_internal_files[] = {
653 &sysfs_journal_debug,
654 &sysfs_btree_updates,
656 &sysfs_btree_key_cache,
660 &sysfs_open_buckets_partial,
662 #ifdef BCH_WRITE_REF_DEBUG
665 &sysfs_nocow_lock_table,
666 &sysfs_io_timers_read,
667 &sysfs_io_timers_write,
670 &sysfs_trigger_discards,
671 &sysfs_trigger_invalidates,
677 &sysfs_copy_gc_enabled,
680 &sysfs_rebalance_enabled,
681 &sysfs_rebalance_work,
682 sysfs_pd_controller_files(rebalance),
687 &sysfs_internal_uuid,
695 SHOW(bch2_fs_opts_dir)
697 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir);
698 const struct bch_option *opt = container_of(attr, struct bch_option, attr);
699 int id = opt - bch2_opt_table;
700 u64 v = bch2_opt_get_by_id(&c->opts, id);
702 bch2_opt_to_text(out, c, c->disk_sb.sb, opt, v, OPT_SHOW_FULL_LIST);
708 STORE(bch2_fs_opts_dir)
710 struct bch_fs *c = container_of(kobj, struct bch_fs, opts_dir);
711 const struct bch_option *opt = container_of(attr, struct bch_option, attr);
712 int ret, id = opt - bch2_opt_table;
717 * We don't need to take c->writes for correctness, but it eliminates an
718 * unsightly error message in the dmesg log when we're RO:
720 if (unlikely(!bch2_write_ref_tryget(c, BCH_WRITE_REF_sysfs)))
723 tmp = kstrdup(buf, GFP_KERNEL);
729 ret = bch2_opt_parse(c, opt, strim(tmp), &v, NULL);
735 ret = bch2_opt_check_may_set(c, id, v);
739 bch2_opt_set_sb(c, opt, v);
740 bch2_opt_set_by_id(&c->opts, id, v);
742 if ((id == Opt_background_target ||
743 id == Opt_background_compression) && v) {
744 bch2_rebalance_add_work(c, S64_MAX);
750 bch2_write_ref_put(c, BCH_WRITE_REF_sysfs);
753 SYSFS_OPS(bch2_fs_opts_dir);
755 struct attribute *bch2_fs_opts_dir_files[] = { NULL };
757 int bch2_opts_create_sysfs_files(struct kobject *kobj)
759 const struct bch_option *i;
762 for (i = bch2_opt_table;
763 i < bch2_opt_table + bch2_opts_nr;
765 if (!(i->flags & OPT_FS))
768 ret = sysfs_create_file(kobj, &i->attr);
778 SHOW(bch2_fs_time_stats)
780 struct bch_fs *c = container_of(kobj, struct bch_fs, time_stats);
783 if (attr == &sysfs_time_stat_##name) \
784 bch2_time_stats_to_text(out, &c->times[BCH_TIME_##name]);
791 STORE(bch2_fs_time_stats)
795 SYSFS_OPS(bch2_fs_time_stats);
797 struct attribute *bch2_fs_time_stats_files[] = {
799 &sysfs_time_stat_##name,
805 static void dev_alloc_debug_to_text(struct printbuf *out, struct bch_dev *ca)
807 struct bch_fs *c = ca->fs;
808 struct bch_dev_usage stats = bch2_dev_usage_read(ca);
809 unsigned i, nr[BCH_DATA_NR];
811 memset(nr, 0, sizeof(nr));
813 for (i = 0; i < ARRAY_SIZE(c->open_buckets); i++)
814 nr[c->open_buckets[i].data_type]++;
816 printbuf_tabstop_push(out, 8);
817 printbuf_tabstop_push(out, 16);
818 printbuf_tabstop_push(out, 16);
819 printbuf_tabstop_push(out, 16);
820 printbuf_tabstop_push(out, 16);
823 prt_str(out, "buckets");
825 prt_str(out, "sectors");
827 prt_str(out, "fragmented");
831 for (i = 0; i < BCH_DATA_NR; i++) {
832 prt_str(out, bch2_data_types[i]);
834 prt_u64(out, stats.d[i].buckets);
836 prt_u64(out, stats.d[i].sectors);
838 prt_u64(out, stats.d[i].fragmented);
845 prt_u64(out, stats.buckets_ec);
851 prt_printf(out, "reserves:");
853 for (i = 0; i < BCH_WATERMARK_NR; i++) {
854 prt_str(out, bch2_watermarks[i]);
856 prt_u64(out, bch2_dev_buckets_reserved(ca, i));
863 printbuf_tabstops_reset(out);
864 printbuf_tabstop_push(out, 24);
866 prt_str(out, "freelist_wait");
868 prt_str(out, c->freelist_wait.list.first ? "waiting" : "empty");
871 prt_str(out, "open buckets allocated");
873 prt_u64(out, OPEN_BUCKETS_COUNT - c->open_buckets_nr_free);
876 prt_str(out, "open buckets this dev");
878 prt_u64(out, ca->nr_open_buckets);
881 prt_str(out, "open buckets total");
883 prt_u64(out, OPEN_BUCKETS_COUNT);
886 prt_str(out, "open_buckets_wait");
888 prt_str(out, c->open_buckets_wait.list.first ? "waiting" : "empty");
891 prt_str(out, "open_buckets_btree");
893 prt_u64(out, nr[BCH_DATA_btree]);
896 prt_str(out, "open_buckets_user");
898 prt_u64(out, nr[BCH_DATA_user]);
901 prt_str(out, "buckets_to_invalidate");
903 prt_u64(out, should_invalidate_buckets(ca, stats));
906 prt_str(out, "btree reserve cache");
908 prt_u64(out, c->btree_reserve_cache_nr);
912 static const char * const bch2_rw[] = {
918 static void dev_iodone_to_text(struct printbuf *out, struct bch_dev *ca)
922 for (rw = 0; rw < 2; rw++) {
923 prt_printf(out, "%s:\n", bch2_rw[rw]);
925 for (i = 1; i < BCH_DATA_NR; i++)
926 prt_printf(out, "%-12s:%12llu\n",
928 percpu_u64_get(&ca->io_done->sectors[rw][i]) << 9);
934 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj);
935 struct bch_fs *c = ca->fs;
937 sysfs_printf(uuid, "%pU\n", ca->uuid.b);
939 sysfs_print(bucket_size, bucket_bytes(ca));
940 sysfs_print(first_bucket, ca->mi.first_bucket);
941 sysfs_print(nbuckets, ca->mi.nbuckets);
942 sysfs_print(durability, ca->mi.durability);
943 sysfs_print(discard, ca->mi.discard);
945 if (attr == &sysfs_label) {
947 mutex_lock(&c->sb_lock);
948 bch2_disk_path_to_text(out, c->disk_sb.sb,
950 mutex_unlock(&c->sb_lock);
956 if (attr == &sysfs_has_data) {
957 prt_bitflags(out, bch2_data_types, bch2_dev_has_data(c, ca));
961 if (attr == &sysfs_state_rw) {
962 prt_string_option(out, bch2_member_states, ca->mi.state);
966 if (attr == &sysfs_iodone)
967 dev_iodone_to_text(out, ca);
969 sysfs_print(io_latency_read, atomic64_read(&ca->cur_latency[READ]));
970 sysfs_print(io_latency_write, atomic64_read(&ca->cur_latency[WRITE]));
972 if (attr == &sysfs_io_latency_stats_read)
973 bch2_time_stats_to_text(out, &ca->io_latency[READ]);
975 if (attr == &sysfs_io_latency_stats_write)
976 bch2_time_stats_to_text(out, &ca->io_latency[WRITE]);
978 sysfs_printf(congested, "%u%%",
979 clamp(atomic_read(&ca->congested), 0, CONGESTED_MAX)
980 * 100 / CONGESTED_MAX);
982 if (attr == &sysfs_alloc_debug)
983 dev_alloc_debug_to_text(out, ca);
990 struct bch_dev *ca = container_of(kobj, struct bch_dev, kobj);
991 struct bch_fs *c = ca->fs;
992 struct bch_member *mi;
994 if (attr == &sysfs_discard) {
995 bool v = strtoul_or_return(buf);
997 mutex_lock(&c->sb_lock);
998 mi = &bch2_sb_get_members(c->disk_sb.sb)->members[ca->dev_idx];
1000 if (v != BCH_MEMBER_DISCARD(mi)) {
1001 SET_BCH_MEMBER_DISCARD(mi, v);
1002 bch2_write_super(c);
1004 mutex_unlock(&c->sb_lock);
1007 if (attr == &sysfs_durability) {
1008 u64 v = strtoul_or_return(buf);
1010 mutex_lock(&c->sb_lock);
1011 mi = &bch2_sb_get_members(c->disk_sb.sb)->members[ca->dev_idx];
1013 if (v != BCH_MEMBER_DURABILITY(mi)) {
1014 SET_BCH_MEMBER_DURABILITY(mi, v + 1);
1015 bch2_write_super(c);
1017 mutex_unlock(&c->sb_lock);
1020 if (attr == &sysfs_label) {
1024 tmp = kstrdup(buf, GFP_KERNEL);
1028 ret = bch2_dev_group_set(c, ca, strim(tmp));
1036 SYSFS_OPS(bch2_dev);
1038 struct attribute *bch2_dev_files[] = {
1041 &sysfs_first_bucket,
1053 &sysfs_io_latency_read,
1054 &sysfs_io_latency_write,
1055 &sysfs_io_latency_stats_read,
1056 &sysfs_io_latency_stats_write,
1064 #endif /* _BCACHEFS_SYSFS_H_ */