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Merge tag 'regmap-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / fs / f2fs / sysfs.c
blob30bae57428d100dad46f3db67af1a8f9df007ccb
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * f2fs sysfs interface
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 * Copyright (c) 2017 Chao Yu <chao@kernel.org>
8 */
9 #include <linux/compiler.h>
10 #include <linux/proc_fs.h>
11 #include <linux/f2fs_fs.h>
12 #include <linux/seq_file.h>
13 #include <linux/unicode.h>
14
15 #include "f2fs.h"
16 #include "segment.h"
17 #include "gc.h"
18 #include <trace/events/f2fs.h>
19
20 static struct proc_dir_entry *f2fs_proc_root;
21
22 /* Sysfs support for f2fs */
23 enum {
24 GC_THREAD, /* struct f2fs_gc_thread */
25 SM_INFO, /* struct f2fs_sm_info */
26 DCC_INFO, /* struct discard_cmd_control */
27 NM_INFO, /* struct f2fs_nm_info */
28 F2FS_SBI, /* struct f2fs_sb_info */
29 #ifdef CONFIG_F2FS_STAT_FS
30 STAT_INFO, /* struct f2fs_stat_info */
31 #endif
32 #ifdef CONFIG_F2FS_FAULT_INJECTION
33 FAULT_INFO_RATE, /* struct f2fs_fault_info */
34 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
35 #endif
36 RESERVED_BLOCKS, /* struct f2fs_sb_info */
37 };
38
39 struct f2fs_attr {
40 struct attribute attr;
41 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
42 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
43 const char *, size_t);
44 int struct_type;
45 int offset;
46 int id;
47 };
48
49 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
50 struct f2fs_sb_info *sbi, char *buf);
51
52 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
53 {
54 if (struct_type == GC_THREAD)
55 return (unsigned char *)sbi->gc_thread;
56 else if (struct_type == SM_INFO)
57 return (unsigned char *)SM_I(sbi);
58 else if (struct_type == DCC_INFO)
59 return (unsigned char *)SM_I(sbi)->dcc_info;
60 else if (struct_type == NM_INFO)
61 return (unsigned char *)NM_I(sbi);
62 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
63 return (unsigned char *)sbi;
64 #ifdef CONFIG_F2FS_FAULT_INJECTION
65 else if (struct_type == FAULT_INFO_RATE ||
66 struct_type == FAULT_INFO_TYPE)
67 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
68 #endif
69 #ifdef CONFIG_F2FS_STAT_FS
70 else if (struct_type == STAT_INFO)
71 return (unsigned char *)F2FS_STAT(sbi);
72 #endif
73 return NULL;
74 }
75
76 static ssize_t dirty_segments_show(struct f2fs_attr *a,
77 struct f2fs_sb_info *sbi, char *buf)
78 {
79 return sprintf(buf, "%llu\n",
80 (unsigned long long)(dirty_segments(sbi)));
81 }
82
83 static ssize_t free_segments_show(struct f2fs_attr *a,
84 struct f2fs_sb_info *sbi, char *buf)
85 {
86 return sprintf(buf, "%llu\n",
87 (unsigned long long)(free_segments(sbi)));
88 }
89
90 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
91 struct f2fs_sb_info *sbi, char *buf)
92 {
93 return sprintf(buf, "%llu\n",
94 (unsigned long long)(sbi->kbytes_written +
95 ((f2fs_get_sectors_written(sbi) -
96 sbi->sectors_written_start) >> 1)));
97 }
98
99 static ssize_t features_show(struct f2fs_attr *a,
100 struct f2fs_sb_info *sbi, char *buf)
101 {
102 int len = 0;
103
104 if (f2fs_sb_has_encrypt(sbi))
105 len += scnprintf(buf, PAGE_SIZE - len, "%s",
106 "encryption");
107 if (f2fs_sb_has_blkzoned(sbi))
108 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
109 len ? ", " : "", "blkzoned");
110 if (f2fs_sb_has_extra_attr(sbi))
111 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
112 len ? ", " : "", "extra_attr");
113 if (f2fs_sb_has_project_quota(sbi))
114 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
115 len ? ", " : "", "projquota");
116 if (f2fs_sb_has_inode_chksum(sbi))
117 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
118 len ? ", " : "", "inode_checksum");
119 if (f2fs_sb_has_flexible_inline_xattr(sbi))
120 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
121 len ? ", " : "", "flexible_inline_xattr");
122 if (f2fs_sb_has_quota_ino(sbi))
123 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
124 len ? ", " : "", "quota_ino");
125 if (f2fs_sb_has_inode_crtime(sbi))
126 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
127 len ? ", " : "", "inode_crtime");
128 if (f2fs_sb_has_lost_found(sbi))
129 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
130 len ? ", " : "", "lost_found");
131 if (f2fs_sb_has_verity(sbi))
132 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
133 len ? ", " : "", "verity");
134 if (f2fs_sb_has_sb_chksum(sbi))
135 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
136 len ? ", " : "", "sb_checksum");
137 if (f2fs_sb_has_casefold(sbi))
138 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
139 len ? ", " : "", "casefold");
140 if (f2fs_sb_has_compression(sbi))
141 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
142 len ? ", " : "", "compression");
143 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
144 len ? ", " : "", "pin_file");
145 len += scnprintf(buf + len, PAGE_SIZE - len, "\n");
146 return len;
147 }
148
149 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
150 struct f2fs_sb_info *sbi, char *buf)
151 {
152 return sprintf(buf, "%u\n", sbi->current_reserved_blocks);
153 }
154
155 static ssize_t unusable_show(struct f2fs_attr *a,
156 struct f2fs_sb_info *sbi, char *buf)
157 {
158 block_t unusable;
159
160 if (test_opt(sbi, DISABLE_CHECKPOINT))
161 unusable = sbi->unusable_block_count;
162 else
163 unusable = f2fs_get_unusable_blocks(sbi);
164 return sprintf(buf, "%llu\n", (unsigned long long)unusable);
165 }
166
167 static ssize_t encoding_show(struct f2fs_attr *a,
168 struct f2fs_sb_info *sbi, char *buf)
169 {
170 #ifdef CONFIG_UNICODE
171 struct super_block *sb = sbi->sb;
172
173 if (f2fs_sb_has_casefold(sbi))
174 return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n",
175 sb->s_encoding->charset,
176 (sb->s_encoding->version >> 16) & 0xff,
177 (sb->s_encoding->version >> 8) & 0xff,
178 sb->s_encoding->version & 0xff);
179 #endif
180 return sprintf(buf, "(none)");
181 }
182
183 static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
184 struct f2fs_sb_info *sbi, char *buf)
185 {
186 return sprintf(buf, "%llu", SIT_I(sbi)->mounted_time);
187 }
188
189 #ifdef CONFIG_F2FS_STAT_FS
190 static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
191 struct f2fs_sb_info *sbi, char *buf)
192 {
193 struct f2fs_stat_info *si = F2FS_STAT(sbi);
194
195 return sprintf(buf, "%llu\n",
196 (unsigned long long)(si->tot_blks -
197 (si->bg_data_blks + si->bg_node_blks)));
198 }
199
200 static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
201 struct f2fs_sb_info *sbi, char *buf)
202 {
203 struct f2fs_stat_info *si = F2FS_STAT(sbi);
204
205 return sprintf(buf, "%llu\n",
206 (unsigned long long)(si->bg_data_blks + si->bg_node_blks));
207 }
208
209 static ssize_t avg_vblocks_show(struct f2fs_attr *a,
210 struct f2fs_sb_info *sbi, char *buf)
211 {
212 struct f2fs_stat_info *si = F2FS_STAT(sbi);
213
214 si->dirty_count = dirty_segments(sbi);
215 f2fs_update_sit_info(sbi);
216 return sprintf(buf, "%llu\n", (unsigned long long)(si->avg_vblocks));
217 }
218 #endif
219
220 static ssize_t main_blkaddr_show(struct f2fs_attr *a,
221 struct f2fs_sb_info *sbi, char *buf)
222 {
223 return snprintf(buf, PAGE_SIZE, "%llu\n",
224 (unsigned long long)MAIN_BLKADDR(sbi));
225 }
226
227 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
228 struct f2fs_sb_info *sbi, char *buf)
229 {
230 unsigned char *ptr = NULL;
231 unsigned int *ui;
232
233 ptr = __struct_ptr(sbi, a->struct_type);
234 if (!ptr)
235 return -EINVAL;
236
237 if (!strcmp(a->attr.name, "extension_list")) {
238 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
239 sbi->raw_super->extension_list;
240 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
241 int hot_count = sbi->raw_super->hot_ext_count;
242 int len = 0, i;
243
244 len += scnprintf(buf + len, PAGE_SIZE - len,
245 "cold file extension:\n");
246 for (i = 0; i < cold_count; i++)
247 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
248 extlist[i]);
249
250 len += scnprintf(buf + len, PAGE_SIZE - len,
251 "hot file extension:\n");
252 for (i = cold_count; i < cold_count + hot_count; i++)
253 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
254 extlist[i]);
255 return len;
256 }
257
258 ui = (unsigned int *)(ptr + a->offset);
259
260 return sprintf(buf, "%u\n", *ui);
261 }
262
263 static ssize_t __sbi_store(struct f2fs_attr *a,
264 struct f2fs_sb_info *sbi,
265 const char *buf, size_t count)
266 {
267 unsigned char *ptr;
268 unsigned long t;
269 unsigned int *ui;
270 ssize_t ret;
271
272 ptr = __struct_ptr(sbi, a->struct_type);
273 if (!ptr)
274 return -EINVAL;
275
276 if (!strcmp(a->attr.name, "extension_list")) {
277 const char *name = strim((char *)buf);
278 bool set = true, hot;
279
280 if (!strncmp(name, "[h]", 3))
281 hot = true;
282 else if (!strncmp(name, "[c]", 3))
283 hot = false;
284 else
285 return -EINVAL;
286
287 name += 3;
288
289 if (*name == '!') {
290 name++;
291 set = false;
292 }
293
294 if (strlen(name) >= F2FS_EXTENSION_LEN)
295 return -EINVAL;
296
297 down_write(&sbi->sb_lock);
298
299 ret = f2fs_update_extension_list(sbi, name, hot, set);
300 if (ret)
301 goto out;
302
303 ret = f2fs_commit_super(sbi, false);
304 if (ret)
305 f2fs_update_extension_list(sbi, name, hot, !set);
306 out:
307 up_write(&sbi->sb_lock);
308 return ret ? ret : count;
309 }
310
311 ui = (unsigned int *)(ptr + a->offset);
312
313 ret = kstrtoul(skip_spaces(buf), 0, &t);
314 if (ret < 0)
315 return ret;
316 #ifdef CONFIG_F2FS_FAULT_INJECTION
317 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
318 return -EINVAL;
319 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
320 return -EINVAL;
321 #endif
322 if (a->struct_type == RESERVED_BLOCKS) {
323 spin_lock(&sbi->stat_lock);
324 if (t > (unsigned long)(sbi->user_block_count -
325 F2FS_OPTION(sbi).root_reserved_blocks)) {
326 spin_unlock(&sbi->stat_lock);
327 return -EINVAL;
328 }
329 *ui = t;
330 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
331 sbi->user_block_count - valid_user_blocks(sbi));
332 spin_unlock(&sbi->stat_lock);
333 return count;
334 }
335
336 if (!strcmp(a->attr.name, "discard_granularity")) {
337 if (t == 0 || t > MAX_PLIST_NUM)
338 return -EINVAL;
339 if (t == *ui)
340 return count;
341 *ui = t;
342 return count;
343 }
344
345 if (!strcmp(a->attr.name, "migration_granularity")) {
346 if (t == 0 || t > sbi->segs_per_sec)
347 return -EINVAL;
348 }
349
350 if (!strcmp(a->attr.name, "trim_sections"))
351 return -EINVAL;
352
353 if (!strcmp(a->attr.name, "gc_urgent")) {
354 if (t == 0) {
355 sbi->gc_mode = GC_NORMAL;
356 } else if (t == 1) {
357 sbi->gc_mode = GC_URGENT_HIGH;
358 if (sbi->gc_thread) {
359 sbi->gc_thread->gc_wake = 1;
360 wake_up_interruptible_all(
361 &sbi->gc_thread->gc_wait_queue_head);
362 wake_up_discard_thread(sbi, true);
363 }
364 } else if (t == 2) {
365 sbi->gc_mode = GC_URGENT_LOW;
366 } else {
367 return -EINVAL;
368 }
369 return count;
370 }
371 if (!strcmp(a->attr.name, "gc_idle")) {
372 if (t == GC_IDLE_CB) {
373 sbi->gc_mode = GC_IDLE_CB;
374 } else if (t == GC_IDLE_GREEDY) {
375 sbi->gc_mode = GC_IDLE_GREEDY;
376 } else if (t == GC_IDLE_AT) {
377 if (!sbi->am.atgc_enabled)
378 return -EINVAL;
379 sbi->gc_mode = GC_AT;
380 } else {
381 sbi->gc_mode = GC_NORMAL;
382 }
383 return count;
384 }
385
386 if (!strcmp(a->attr.name, "iostat_enable")) {
387 sbi->iostat_enable = !!t;
388 if (!sbi->iostat_enable)
389 f2fs_reset_iostat(sbi);
390 return count;
391 }
392
393 if (!strcmp(a->attr.name, "iostat_period_ms")) {
394 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS)
395 return -EINVAL;
396 spin_lock(&sbi->iostat_lock);
397 sbi->iostat_period_ms = (unsigned int)t;
398 spin_unlock(&sbi->iostat_lock);
399 return count;
400 }
401
402 *ui = (unsigned int)t;
403
404 return count;
405 }
406
407 static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
408 struct f2fs_sb_info *sbi,
409 const char *buf, size_t count)
410 {
411 ssize_t ret;
412 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
413 a->struct_type == GC_THREAD);
414
415 if (gc_entry) {
416 if (!down_read_trylock(&sbi->sb->s_umount))
417 return -EAGAIN;
418 }
419 ret = __sbi_store(a, sbi, buf, count);
420 if (gc_entry)
421 up_read(&sbi->sb->s_umount);
422
423 return ret;
424 }
425
426 static ssize_t f2fs_attr_show(struct kobject *kobj,
427 struct attribute *attr, char *buf)
428 {
429 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
430 s_kobj);
431 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
432
433 return a->show ? a->show(a, sbi, buf) : 0;
434 }
435
436 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
437 const char *buf, size_t len)
438 {
439 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
440 s_kobj);
441 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
442
443 return a->store ? a->store(a, sbi, buf, len) : 0;
444 }
445
446 static void f2fs_sb_release(struct kobject *kobj)
447 {
448 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
449 s_kobj);
450 complete(&sbi->s_kobj_unregister);
451 }
452
453 enum feat_id {
454 FEAT_CRYPTO = 0,
455 FEAT_BLKZONED,
456 FEAT_ATOMIC_WRITE,
457 FEAT_EXTRA_ATTR,
458 FEAT_PROJECT_QUOTA,
459 FEAT_INODE_CHECKSUM,
460 FEAT_FLEXIBLE_INLINE_XATTR,
461 FEAT_QUOTA_INO,
462 FEAT_INODE_CRTIME,
463 FEAT_LOST_FOUND,
464 FEAT_VERITY,
465 FEAT_SB_CHECKSUM,
466 FEAT_CASEFOLD,
467 FEAT_COMPRESSION,
468 FEAT_TEST_DUMMY_ENCRYPTION_V2,
469 };
470
471 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
472 struct f2fs_sb_info *sbi, char *buf)
473 {
474 switch (a->id) {
475 case FEAT_CRYPTO:
476 case FEAT_BLKZONED:
477 case FEAT_ATOMIC_WRITE:
478 case FEAT_EXTRA_ATTR:
479 case FEAT_PROJECT_QUOTA:
480 case FEAT_INODE_CHECKSUM:
481 case FEAT_FLEXIBLE_INLINE_XATTR:
482 case FEAT_QUOTA_INO:
483 case FEAT_INODE_CRTIME:
484 case FEAT_LOST_FOUND:
485 case FEAT_VERITY:
486 case FEAT_SB_CHECKSUM:
487 case FEAT_CASEFOLD:
488 case FEAT_COMPRESSION:
489 case FEAT_TEST_DUMMY_ENCRYPTION_V2:
490 return sprintf(buf, "supported\n");
491 }
492 return 0;
493 }
494
495 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
496 static struct f2fs_attr f2fs_attr_##_name = { \
497 .attr = {.name = __stringify(_name), .mode = _mode }, \
498 .show = _show, \
499 .store = _store, \
500 .struct_type = _struct_type, \
501 .offset = _offset \
502 }
503
504 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
505 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
506 f2fs_sbi_show, f2fs_sbi_store, \
507 offsetof(struct struct_name, elname))
508
509 #define F2FS_GENERAL_RO_ATTR(name) \
510 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
511
512 #define F2FS_FEATURE_RO_ATTR(_name, _id) \
513 static struct f2fs_attr f2fs_attr_##_name = { \
514 .attr = {.name = __stringify(_name), .mode = 0444 }, \
515 .show = f2fs_feature_show, \
516 .id = _id, \
517 }
518
519 #define F2FS_STAT_ATTR(_struct_type, _struct_name, _name, _elname) \
520 static struct f2fs_attr f2fs_attr_##_name = { \
521 .attr = {.name = __stringify(_name), .mode = 0444 }, \
522 .show = f2fs_sbi_show, \
523 .struct_type = _struct_type, \
524 .offset = offsetof(struct _struct_name, _elname), \
525 }
526
527 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
528 urgent_sleep_time);
529 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
530 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
531 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
532 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
533 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
534 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
535 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
536 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
537 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
538 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
539 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
540 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
541 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
542 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks);
543 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
544 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
545 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
546 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
547 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
548 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
549 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity);
550 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
551 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
552 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
553 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval,
554 interval_time[DISCARD_TIME]);
555 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]);
556 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info,
557 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
558 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
559 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_period_ms, iostat_period_ms);
560 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
561 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_io_bytes, max_io_bytes);
562 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
563 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
564 #ifdef CONFIG_F2FS_FAULT_INJECTION
565 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
566 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
567 #endif
568 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, data_io_flag, data_io_flag);
569 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, node_io_flag, node_io_flag);
570 F2FS_GENERAL_RO_ATTR(dirty_segments);
571 F2FS_GENERAL_RO_ATTR(free_segments);
572 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
573 F2FS_GENERAL_RO_ATTR(features);
574 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
575 F2FS_GENERAL_RO_ATTR(unusable);
576 F2FS_GENERAL_RO_ATTR(encoding);
577 F2FS_GENERAL_RO_ATTR(mounted_time_sec);
578 F2FS_GENERAL_RO_ATTR(main_blkaddr);
579 #ifdef CONFIG_F2FS_STAT_FS
580 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count);
581 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count);
582 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count);
583 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc);
584 F2FS_GENERAL_RO_ATTR(moved_blocks_background);
585 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
586 F2FS_GENERAL_RO_ATTR(avg_vblocks);
587 #endif
588
589 #ifdef CONFIG_FS_ENCRYPTION
590 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
591 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2, FEAT_TEST_DUMMY_ENCRYPTION_V2);
592 #endif
593 #ifdef CONFIG_BLK_DEV_ZONED
594 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
595 #endif
596 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
597 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
598 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
599 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
600 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
601 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
602 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
603 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
604 #ifdef CONFIG_FS_VERITY
605 F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY);
606 #endif
607 F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
608 F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD);
609 #ifdef CONFIG_F2FS_FS_COMPRESSION
610 F2FS_FEATURE_RO_ATTR(compression, FEAT_COMPRESSION);
611 #endif
612
613 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
614 static struct attribute *f2fs_attrs[] = {
615 ATTR_LIST(gc_urgent_sleep_time),
616 ATTR_LIST(gc_min_sleep_time),
617 ATTR_LIST(gc_max_sleep_time),
618 ATTR_LIST(gc_no_gc_sleep_time),
619 ATTR_LIST(gc_idle),
620 ATTR_LIST(gc_urgent),
621 ATTR_LIST(reclaim_segments),
622 ATTR_LIST(main_blkaddr),
623 ATTR_LIST(max_small_discards),
624 ATTR_LIST(discard_granularity),
625 ATTR_LIST(batched_trim_sections),
626 ATTR_LIST(ipu_policy),
627 ATTR_LIST(min_ipu_util),
628 ATTR_LIST(min_fsync_blocks),
629 ATTR_LIST(min_seq_blocks),
630 ATTR_LIST(min_hot_blocks),
631 ATTR_LIST(min_ssr_sections),
632 ATTR_LIST(max_victim_search),
633 ATTR_LIST(migration_granularity),
634 ATTR_LIST(dir_level),
635 ATTR_LIST(ram_thresh),
636 ATTR_LIST(ra_nid_pages),
637 ATTR_LIST(dirty_nats_ratio),
638 ATTR_LIST(cp_interval),
639 ATTR_LIST(idle_interval),
640 ATTR_LIST(discard_idle_interval),
641 ATTR_LIST(gc_idle_interval),
642 ATTR_LIST(umount_discard_timeout),
643 ATTR_LIST(iostat_enable),
644 ATTR_LIST(iostat_period_ms),
645 ATTR_LIST(readdir_ra),
646 ATTR_LIST(max_io_bytes),
647 ATTR_LIST(gc_pin_file_thresh),
648 ATTR_LIST(extension_list),
649 #ifdef CONFIG_F2FS_FAULT_INJECTION
650 ATTR_LIST(inject_rate),
651 ATTR_LIST(inject_type),
652 #endif
653 ATTR_LIST(data_io_flag),
654 ATTR_LIST(node_io_flag),
655 ATTR_LIST(dirty_segments),
656 ATTR_LIST(free_segments),
657 ATTR_LIST(unusable),
658 ATTR_LIST(lifetime_write_kbytes),
659 ATTR_LIST(features),
660 ATTR_LIST(reserved_blocks),
661 ATTR_LIST(current_reserved_blocks),
662 ATTR_LIST(encoding),
663 ATTR_LIST(mounted_time_sec),
664 #ifdef CONFIG_F2FS_STAT_FS
665 ATTR_LIST(cp_foreground_calls),
666 ATTR_LIST(cp_background_calls),
667 ATTR_LIST(gc_foreground_calls),
668 ATTR_LIST(gc_background_calls),
669 ATTR_LIST(moved_blocks_foreground),
670 ATTR_LIST(moved_blocks_background),
671 ATTR_LIST(avg_vblocks),
672 #endif
673 NULL,
674 };
675 ATTRIBUTE_GROUPS(f2fs);
676
677 static struct attribute *f2fs_feat_attrs[] = {
678 #ifdef CONFIG_FS_ENCRYPTION
679 ATTR_LIST(encryption),
680 ATTR_LIST(test_dummy_encryption_v2),
681 #endif
682 #ifdef CONFIG_BLK_DEV_ZONED
683 ATTR_LIST(block_zoned),
684 #endif
685 ATTR_LIST(atomic_write),
686 ATTR_LIST(extra_attr),
687 ATTR_LIST(project_quota),
688 ATTR_LIST(inode_checksum),
689 ATTR_LIST(flexible_inline_xattr),
690 ATTR_LIST(quota_ino),
691 ATTR_LIST(inode_crtime),
692 ATTR_LIST(lost_found),
693 #ifdef CONFIG_FS_VERITY
694 ATTR_LIST(verity),
695 #endif
696 ATTR_LIST(sb_checksum),
697 ATTR_LIST(casefold),
698 #ifdef CONFIG_F2FS_FS_COMPRESSION
699 ATTR_LIST(compression),
700 #endif
701 NULL,
702 };
703 ATTRIBUTE_GROUPS(f2fs_feat);
704
705 static const struct sysfs_ops f2fs_attr_ops = {
706 .show = f2fs_attr_show,
707 .store = f2fs_attr_store,
708 };
709
710 static struct kobj_type f2fs_sb_ktype = {
711 .default_groups = f2fs_groups,
712 .sysfs_ops = &f2fs_attr_ops,
713 .release = f2fs_sb_release,
714 };
715
716 static struct kobj_type f2fs_ktype = {
717 .sysfs_ops = &f2fs_attr_ops,
718 };
719
720 static struct kset f2fs_kset = {
721 .kobj = {.ktype = &f2fs_ktype},
722 };
723
724 static struct kobj_type f2fs_feat_ktype = {
725 .default_groups = f2fs_feat_groups,
726 .sysfs_ops = &f2fs_attr_ops,
727 };
728
729 static struct kobject f2fs_feat = {
730 .kset = &f2fs_kset,
731 };
732
733 static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
734 void *offset)
735 {
736 struct super_block *sb = seq->private;
737 struct f2fs_sb_info *sbi = F2FS_SB(sb);
738 unsigned int total_segs =
739 le32_to_cpu(sbi->raw_super->segment_count_main);
740 int i;
741
742 seq_puts(seq, "format: segment_type|valid_blocks\n"
743 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
744
745 for (i = 0; i < total_segs; i++) {
746 struct seg_entry *se = get_seg_entry(sbi, i);
747
748 if ((i % 10) == 0)
749 seq_printf(seq, "%-10d", i);
750 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
751 if ((i % 10) == 9 || i == (total_segs - 1))
752 seq_putc(seq, '\n');
753 else
754 seq_putc(seq, ' ');
755 }
756
757 return 0;
758 }
759
760 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
761 void *offset)
762 {
763 struct super_block *sb = seq->private;
764 struct f2fs_sb_info *sbi = F2FS_SB(sb);
765 unsigned int total_segs =
766 le32_to_cpu(sbi->raw_super->segment_count_main);
767 int i, j;
768
769 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
770 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
771
772 for (i = 0; i < total_segs; i++) {
773 struct seg_entry *se = get_seg_entry(sbi, i);
774
775 seq_printf(seq, "%-10d", i);
776 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
777 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
778 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
779 seq_putc(seq, '\n');
780 }
781 return 0;
782 }
783
784 void f2fs_record_iostat(struct f2fs_sb_info *sbi)
785 {
786 unsigned long long iostat_diff[NR_IO_TYPE];
787 int i;
788
789 if (time_is_after_jiffies(sbi->iostat_next_period))
790 return;
791
792 /* Need double check under the lock */
793 spin_lock(&sbi->iostat_lock);
794 if (time_is_after_jiffies(sbi->iostat_next_period)) {
795 spin_unlock(&sbi->iostat_lock);
796 return;
797 }
798 sbi->iostat_next_period = jiffies +
799 msecs_to_jiffies(sbi->iostat_period_ms);
800
801 for (i = 0; i < NR_IO_TYPE; i++) {
802 iostat_diff[i] = sbi->rw_iostat[i] -
803 sbi->prev_rw_iostat[i];
804 sbi->prev_rw_iostat[i] = sbi->rw_iostat[i];
805 }
806 spin_unlock(&sbi->iostat_lock);
807
808 trace_f2fs_iostat(sbi, iostat_diff);
809 }
810
811 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
812 void *offset)
813 {
814 struct super_block *sb = seq->private;
815 struct f2fs_sb_info *sbi = F2FS_SB(sb);
816 time64_t now = ktime_get_real_seconds();
817
818 if (!sbi->iostat_enable)
819 return 0;
820
821 seq_printf(seq, "time: %-16llu\n", now);
822
823 /* print app write IOs */
824 seq_puts(seq, "[WRITE]\n");
825 seq_printf(seq, "app buffered: %-16llu\n",
826 sbi->rw_iostat[APP_BUFFERED_IO]);
827 seq_printf(seq, "app direct: %-16llu\n",
828 sbi->rw_iostat[APP_DIRECT_IO]);
829 seq_printf(seq, "app mapped: %-16llu\n",
830 sbi->rw_iostat[APP_MAPPED_IO]);
831
832 /* print fs write IOs */
833 seq_printf(seq, "fs data: %-16llu\n",
834 sbi->rw_iostat[FS_DATA_IO]);
835 seq_printf(seq, "fs node: %-16llu\n",
836 sbi->rw_iostat[FS_NODE_IO]);
837 seq_printf(seq, "fs meta: %-16llu\n",
838 sbi->rw_iostat[FS_META_IO]);
839 seq_printf(seq, "fs gc data: %-16llu\n",
840 sbi->rw_iostat[FS_GC_DATA_IO]);
841 seq_printf(seq, "fs gc node: %-16llu\n",
842 sbi->rw_iostat[FS_GC_NODE_IO]);
843 seq_printf(seq, "fs cp data: %-16llu\n",
844 sbi->rw_iostat[FS_CP_DATA_IO]);
845 seq_printf(seq, "fs cp node: %-16llu\n",
846 sbi->rw_iostat[FS_CP_NODE_IO]);
847 seq_printf(seq, "fs cp meta: %-16llu\n",
848 sbi->rw_iostat[FS_CP_META_IO]);
849
850 /* print app read IOs */
851 seq_puts(seq, "[READ]\n");
852 seq_printf(seq, "app buffered: %-16llu\n",
853 sbi->rw_iostat[APP_BUFFERED_READ_IO]);
854 seq_printf(seq, "app direct: %-16llu\n",
855 sbi->rw_iostat[APP_DIRECT_READ_IO]);
856 seq_printf(seq, "app mapped: %-16llu\n",
857 sbi->rw_iostat[APP_MAPPED_READ_IO]);
858
859 /* print fs read IOs */
860 seq_printf(seq, "fs data: %-16llu\n",
861 sbi->rw_iostat[FS_DATA_READ_IO]);
862 seq_printf(seq, "fs gc data: %-16llu\n",
863 sbi->rw_iostat[FS_GDATA_READ_IO]);
864 seq_printf(seq, "fs compr_data: %-16llu\n",
865 sbi->rw_iostat[FS_CDATA_READ_IO]);
866 seq_printf(seq, "fs node: %-16llu\n",
867 sbi->rw_iostat[FS_NODE_READ_IO]);
868 seq_printf(seq, "fs meta: %-16llu\n",
869 sbi->rw_iostat[FS_META_READ_IO]);
870
871 /* print other IOs */
872 seq_puts(seq, "[OTHER]\n");
873 seq_printf(seq, "fs discard: %-16llu\n",
874 sbi->rw_iostat[FS_DISCARD]);
875
876 return 0;
877 }
878
879 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
880 void *offset)
881 {
882 struct super_block *sb = seq->private;
883 struct f2fs_sb_info *sbi = F2FS_SB(sb);
884 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
885 int i;
886
887 seq_puts(seq, "format: victim_secmap bitmaps\n");
888
889 for (i = 0; i < MAIN_SECS(sbi); i++) {
890 if ((i % 10) == 0)
891 seq_printf(seq, "%-10d", i);
892 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
893 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
894 seq_putc(seq, '\n');
895 else
896 seq_putc(seq, ' ');
897 }
898 return 0;
899 }
900
901 int __init f2fs_init_sysfs(void)
902 {
903 int ret;
904
905 kobject_set_name(&f2fs_kset.kobj, "f2fs");
906 f2fs_kset.kobj.parent = fs_kobj;
907 ret = kset_register(&f2fs_kset);
908 if (ret)
909 return ret;
910
911 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
912 NULL, "features");
913 if (ret) {
914 kobject_put(&f2fs_feat);
915 kset_unregister(&f2fs_kset);
916 } else {
917 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
918 }
919 return ret;
920 }
921
922 void f2fs_exit_sysfs(void)
923 {
924 kobject_put(&f2fs_feat);
925 kset_unregister(&f2fs_kset);
926 remove_proc_entry("fs/f2fs", NULL);
927 f2fs_proc_root = NULL;
928 }
929
930 int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
931 {
932 struct super_block *sb = sbi->sb;
933 int err;
934
935 sbi->s_kobj.kset = &f2fs_kset;
936 init_completion(&sbi->s_kobj_unregister);
937 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
938 "%s", sb->s_id);
939 if (err) {
940 kobject_put(&sbi->s_kobj);
941 wait_for_completion(&sbi->s_kobj_unregister);
942 return err;
943 }
944
945 if (f2fs_proc_root)
946 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
947
948 if (sbi->s_proc) {
949 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc,
950 segment_info_seq_show, sb);
951 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc,
952 segment_bits_seq_show, sb);
953 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc,
954 iostat_info_seq_show, sb);
955 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc,
956 victim_bits_seq_show, sb);
957 }
958 return 0;
959 }
960
961 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
962 {
963 if (sbi->s_proc) {
964 remove_proc_entry("iostat_info", sbi->s_proc);
965 remove_proc_entry("segment_info", sbi->s_proc);
966 remove_proc_entry("segment_bits", sbi->s_proc);
967 remove_proc_entry("victim_bits", sbi->s_proc);
968 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
969 }
970 kobject_del(&sbi->s_kobj);
971 kobject_put(&sbi->s_kobj);
972 wait_for_completion(&sbi->s_kobj_unregister);
973 }
Linux with added FPC-III support