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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
19static struct proc_dir_entry *f2fs_proc_root;
20
21/* Sysfs support for f2fs */
22enum {
23 GC_THREAD, /* struct f2fs_gc_thread */
24 SM_INFO, /* struct f2fs_sm_info */
25 DCC_INFO, /* struct discard_cmd_control */
26 NM_INFO, /* struct f2fs_nm_info */
27 F2FS_SBI, /* struct f2fs_sb_info */
28#ifdef CONFIG_F2FS_FAULT_INJECTION
29 FAULT_INFO_RATE, /* struct f2fs_fault_info */
30 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
31#endif
32 RESERVED_BLOCKS, /* struct f2fs_sb_info */
33};
34
35struct f2fs_attr {
36 struct attribute attr;
37 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
38 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
39 const char *, size_t);
40 int struct_type;
41 int offset;
42 int id;
43};
44
45static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
46{
47 if (struct_type == GC_THREAD)
48 return (unsigned char *)sbi->gc_thread;
49 else if (struct_type == SM_INFO)
50 return (unsigned char *)SM_I(sbi);
51 else if (struct_type == DCC_INFO)
52 return (unsigned char *)SM_I(sbi)->dcc_info;
53 else if (struct_type == NM_INFO)
54 return (unsigned char *)NM_I(sbi);
55 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
56 return (unsigned char *)sbi;
57#ifdef CONFIG_F2FS_FAULT_INJECTION
58 else if (struct_type == FAULT_INFO_RATE ||
59 struct_type == FAULT_INFO_TYPE)
60 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
61#endif
62 return NULL;
63}
64
65static ssize_t dirty_segments_show(struct f2fs_attr *a,
66 struct f2fs_sb_info *sbi, char *buf)
67{
68 return snprintf(buf, PAGE_SIZE, "%llu\n",
69 (unsigned long long)(dirty_segments(sbi)));
70}
71
72static ssize_t unusable_show(struct f2fs_attr *a,
73 struct f2fs_sb_info *sbi, char *buf)
74{
75 block_t unusable;
76
77 if (test_opt(sbi, DISABLE_CHECKPOINT))
78 unusable = sbi->unusable_block_count;
79 else
80 unusable = f2fs_get_unusable_blocks(sbi);
81 return snprintf(buf, PAGE_SIZE, "%llu\n",
82 (unsigned long long)unusable);
83}
84
85static ssize_t encoding_show(struct f2fs_attr *a,
86 struct f2fs_sb_info *sbi, char *buf)
87{
88#ifdef CONFIG_UNICODE
89 if (f2fs_sb_has_casefold(sbi))
90 return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n",
91 sbi->s_encoding->charset,
92 (sbi->s_encoding->version >> 16) & 0xff,
93 (sbi->s_encoding->version >> 8) & 0xff,
94 sbi->s_encoding->version & 0xff);
95#endif
96 return snprintf(buf, PAGE_SIZE, "(none)");
97}
98
99static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
100 struct f2fs_sb_info *sbi, char *buf)
101{
102 struct super_block *sb = sbi->sb;
103
104 if (!sb->s_bdev->bd_part)
105 return snprintf(buf, PAGE_SIZE, "0\n");
106
107 return snprintf(buf, PAGE_SIZE, "%llu\n",
108 (unsigned long long)(sbi->kbytes_written +
109 BD_PART_WRITTEN(sbi)));
110}
111
112static ssize_t features_show(struct f2fs_attr *a,
113 struct f2fs_sb_info *sbi, char *buf)
114{
115 struct super_block *sb = sbi->sb;
116 int len = 0;
117
118 if (!sb->s_bdev->bd_part)
119 return snprintf(buf, PAGE_SIZE, "0\n");
120
121 if (f2fs_sb_has_encrypt(sbi))
122 len += snprintf(buf, PAGE_SIZE - len, "%s",
123 "encryption");
124 if (f2fs_sb_has_blkzoned(sbi))
125 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
126 len ? ", " : "", "blkzoned");
127 if (f2fs_sb_has_extra_attr(sbi))
128 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
129 len ? ", " : "", "extra_attr");
130 if (f2fs_sb_has_project_quota(sbi))
131 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
132 len ? ", " : "", "projquota");
133 if (f2fs_sb_has_inode_chksum(sbi))
134 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
135 len ? ", " : "", "inode_checksum");
136 if (f2fs_sb_has_flexible_inline_xattr(sbi))
137 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
138 len ? ", " : "", "flexible_inline_xattr");
139 if (f2fs_sb_has_quota_ino(sbi))
140 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
141 len ? ", " : "", "quota_ino");
142 if (f2fs_sb_has_inode_crtime(sbi))
143 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
144 len ? ", " : "", "inode_crtime");
145 if (f2fs_sb_has_lost_found(sbi))
146 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
147 len ? ", " : "", "lost_found");
148 if (f2fs_sb_has_verity(sbi))
149 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
150 len ? ", " : "", "verity");
151 if (f2fs_sb_has_sb_chksum(sbi))
152 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
153 len ? ", " : "", "sb_checksum");
154 if (f2fs_sb_has_casefold(sbi))
155 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
156 len ? ", " : "", "casefold");
157 len += snprintf(buf + len, PAGE_SIZE - len, "\n");
158 return len;
159}
160
161static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
162 struct f2fs_sb_info *sbi, char *buf)
163{
164 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks);
165}
166
167static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
168 struct f2fs_sb_info *sbi, char *buf)
169{
170 unsigned char *ptr = NULL;
171 unsigned int *ui;
172
173 ptr = __struct_ptr(sbi, a->struct_type);
174 if (!ptr)
175 return -EINVAL;
176
177 if (!strcmp(a->attr.name, "extension_list")) {
178 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
179 sbi->raw_super->extension_list;
180 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
181 int hot_count = sbi->raw_super->hot_ext_count;
182 int len = 0, i;
183
184 len += snprintf(buf + len, PAGE_SIZE - len,
185 "cold file extension:\n");
186 for (i = 0; i < cold_count; i++)
187 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
188 extlist[i]);
189
190 len += snprintf(buf + len, PAGE_SIZE - len,
191 "hot file extension:\n");
192 for (i = cold_count; i < cold_count + hot_count; i++)
193 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
194 extlist[i]);
195 return len;
196 }
197
198 ui = (unsigned int *)(ptr + a->offset);
199
200 return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
201}
202
203static ssize_t __sbi_store(struct f2fs_attr *a,
204 struct f2fs_sb_info *sbi,
205 const char *buf, size_t count)
206{
207 unsigned char *ptr;
208 unsigned long t;
209 unsigned int *ui;
210 ssize_t ret;
211
212 ptr = __struct_ptr(sbi, a->struct_type);
213 if (!ptr)
214 return -EINVAL;
215
216 if (!strcmp(a->attr.name, "extension_list")) {
217 const char *name = strim((char *)buf);
218 bool set = true, hot;
219
220 if (!strncmp(name, "[h]", 3))
221 hot = true;
222 else if (!strncmp(name, "[c]", 3))
223 hot = false;
224 else
225 return -EINVAL;
226
227 name += 3;
228
229 if (*name == '!') {
230 name++;
231 set = false;
232 }
233
234 if (strlen(name) >= F2FS_EXTENSION_LEN)
235 return -EINVAL;
236
237 down_write(&sbi->sb_lock);
238
239 ret = f2fs_update_extension_list(sbi, name, hot, set);
240 if (ret)
241 goto out;
242
243 ret = f2fs_commit_super(sbi, false);
244 if (ret)
245 f2fs_update_extension_list(sbi, name, hot, !set);
246out:
247 up_write(&sbi->sb_lock);
248 return ret ? ret : count;
249 }
250
251 ui = (unsigned int *)(ptr + a->offset);
252
253 ret = kstrtoul(skip_spaces(buf), 0, &t);
254 if (ret < 0)
255 return ret;
256#ifdef CONFIG_F2FS_FAULT_INJECTION
257 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
258 return -EINVAL;
259 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
260 return -EINVAL;
261#endif
262 if (a->struct_type == RESERVED_BLOCKS) {
263 spin_lock(&sbi->stat_lock);
264 if (t > (unsigned long)(sbi->user_block_count -
265 F2FS_OPTION(sbi).root_reserved_blocks)) {
266 spin_unlock(&sbi->stat_lock);
267 return -EINVAL;
268 }
269 *ui = t;
270 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
271 sbi->user_block_count - valid_user_blocks(sbi));
272 spin_unlock(&sbi->stat_lock);
273 return count;
274 }
275
276 if (!strcmp(a->attr.name, "discard_granularity")) {
277 if (t == 0 || t > MAX_PLIST_NUM)
278 return -EINVAL;
279 if (t == *ui)
280 return count;
281 *ui = t;
282 return count;
283 }
284
285 if (!strcmp(a->attr.name, "migration_granularity")) {
286 if (t == 0 || t > sbi->segs_per_sec)
287 return -EINVAL;
288 }
289
290 if (!strcmp(a->attr.name, "trim_sections"))
291 return -EINVAL;
292
293 if (!strcmp(a->attr.name, "gc_urgent")) {
294 if (t >= 1) {
295 sbi->gc_mode = GC_URGENT;
296 if (sbi->gc_thread) {
297 sbi->gc_thread->gc_wake = 1;
298 wake_up_interruptible_all(
299 &sbi->gc_thread->gc_wait_queue_head);
300 wake_up_discard_thread(sbi, true);
301 }
302 } else {
303 sbi->gc_mode = GC_NORMAL;
304 }
305 return count;
306 }
307 if (!strcmp(a->attr.name, "gc_idle")) {
308 if (t == GC_IDLE_CB)
309 sbi->gc_mode = GC_IDLE_CB;
310 else if (t == GC_IDLE_GREEDY)
311 sbi->gc_mode = GC_IDLE_GREEDY;
312 else
313 sbi->gc_mode = GC_NORMAL;
314 return count;
315 }
316
317
318 if (!strcmp(a->attr.name, "iostat_enable")) {
319 sbi->iostat_enable = !!t;
320 if (!sbi->iostat_enable)
321 f2fs_reset_iostat(sbi);
322 return count;
323 }
324
325 *ui = (unsigned int)t;
326
327 return count;
328}
329
330static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
331 struct f2fs_sb_info *sbi,
332 const char *buf, size_t count)
333{
334 ssize_t ret;
335 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
336 a->struct_type == GC_THREAD);
337
338 if (gc_entry) {
339 if (!down_read_trylock(&sbi->sb->s_umount))
340 return -EAGAIN;
341 }
342 ret = __sbi_store(a, sbi, buf, count);
343 if (gc_entry)
344 up_read(&sbi->sb->s_umount);
345
346 return ret;
347}
348
349static ssize_t f2fs_attr_show(struct kobject *kobj,
350 struct attribute *attr, char *buf)
351{
352 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
353 s_kobj);
354 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
355
356 return a->show ? a->show(a, sbi, buf) : 0;
357}
358
359static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
360 const char *buf, size_t len)
361{
362 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
363 s_kobj);
364 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
365
366 return a->store ? a->store(a, sbi, buf, len) : 0;
367}
368
369static void f2fs_sb_release(struct kobject *kobj)
370{
371 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
372 s_kobj);
373 complete(&sbi->s_kobj_unregister);
374}
375
376enum feat_id {
377 FEAT_CRYPTO = 0,
378 FEAT_BLKZONED,
379 FEAT_ATOMIC_WRITE,
380 FEAT_EXTRA_ATTR,
381 FEAT_PROJECT_QUOTA,
382 FEAT_INODE_CHECKSUM,
383 FEAT_FLEXIBLE_INLINE_XATTR,
384 FEAT_QUOTA_INO,
385 FEAT_INODE_CRTIME,
386 FEAT_LOST_FOUND,
387 FEAT_VERITY,
388 FEAT_SB_CHECKSUM,
389 FEAT_CASEFOLD,
390};
391
392static ssize_t f2fs_feature_show(struct f2fs_attr *a,
393 struct f2fs_sb_info *sbi, char *buf)
394{
395 switch (a->id) {
396 case FEAT_CRYPTO:
397 case FEAT_BLKZONED:
398 case FEAT_ATOMIC_WRITE:
399 case FEAT_EXTRA_ATTR:
400 case FEAT_PROJECT_QUOTA:
401 case FEAT_INODE_CHECKSUM:
402 case FEAT_FLEXIBLE_INLINE_XATTR:
403 case FEAT_QUOTA_INO:
404 case FEAT_INODE_CRTIME:
405 case FEAT_LOST_FOUND:
406 case FEAT_VERITY:
407 case FEAT_SB_CHECKSUM:
408 case FEAT_CASEFOLD:
409 return snprintf(buf, PAGE_SIZE, "supported\n");
410 }
411 return 0;
412}
413
414#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
415static struct f2fs_attr f2fs_attr_##_name = { \
416 .attr = {.name = __stringify(_name), .mode = _mode }, \
417 .show = _show, \
418 .store = _store, \
419 .struct_type = _struct_type, \
420 .offset = _offset \
421}
422
423#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
424 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
425 f2fs_sbi_show, f2fs_sbi_store, \
426 offsetof(struct struct_name, elname))
427
428#define F2FS_GENERAL_RO_ATTR(name) \
429static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
430
431#define F2FS_FEATURE_RO_ATTR(_name, _id) \
432static struct f2fs_attr f2fs_attr_##_name = { \
433 .attr = {.name = __stringify(_name), .mode = 0444 }, \
434 .show = f2fs_feature_show, \
435 .id = _id, \
436}
437
438F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
439 urgent_sleep_time);
440F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
441F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
442F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
443F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
444F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
445F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
446F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
447F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
448F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
449F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
450F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
451F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
452F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
453F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks);
454F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
455F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
456F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
457F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
458F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
459F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
460F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity);
461F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
462F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
463F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
464F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval,
465 interval_time[DISCARD_TIME]);
466F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]);
467F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info,
468 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
469F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
470F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
471F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
472F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
473#ifdef CONFIG_F2FS_FAULT_INJECTION
474F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
475F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
476#endif
477F2FS_GENERAL_RO_ATTR(dirty_segments);
478F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
479F2FS_GENERAL_RO_ATTR(features);
480F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
481F2FS_GENERAL_RO_ATTR(unusable);
482F2FS_GENERAL_RO_ATTR(encoding);
483
484#ifdef CONFIG_FS_ENCRYPTION
485F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
486#endif
487#ifdef CONFIG_BLK_DEV_ZONED
488F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
489#endif
490F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
491F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
492F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
493F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
494F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
495F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
496F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
497F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
498#ifdef CONFIG_FS_VERITY
499F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY);
500#endif
501F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
502F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD);
503
504#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
505static struct attribute *f2fs_attrs[] = {
506 ATTR_LIST(gc_urgent_sleep_time),
507 ATTR_LIST(gc_min_sleep_time),
508 ATTR_LIST(gc_max_sleep_time),
509 ATTR_LIST(gc_no_gc_sleep_time),
510 ATTR_LIST(gc_idle),
511 ATTR_LIST(gc_urgent),
512 ATTR_LIST(reclaim_segments),
513 ATTR_LIST(max_small_discards),
514 ATTR_LIST(discard_granularity),
515 ATTR_LIST(batched_trim_sections),
516 ATTR_LIST(ipu_policy),
517 ATTR_LIST(min_ipu_util),
518 ATTR_LIST(min_fsync_blocks),
519 ATTR_LIST(min_seq_blocks),
520 ATTR_LIST(min_hot_blocks),
521 ATTR_LIST(min_ssr_sections),
522 ATTR_LIST(max_victim_search),
523 ATTR_LIST(migration_granularity),
524 ATTR_LIST(dir_level),
525 ATTR_LIST(ram_thresh),
526 ATTR_LIST(ra_nid_pages),
527 ATTR_LIST(dirty_nats_ratio),
528 ATTR_LIST(cp_interval),
529 ATTR_LIST(idle_interval),
530 ATTR_LIST(discard_idle_interval),
531 ATTR_LIST(gc_idle_interval),
532 ATTR_LIST(umount_discard_timeout),
533 ATTR_LIST(iostat_enable),
534 ATTR_LIST(readdir_ra),
535 ATTR_LIST(gc_pin_file_thresh),
536 ATTR_LIST(extension_list),
537#ifdef CONFIG_F2FS_FAULT_INJECTION
538 ATTR_LIST(inject_rate),
539 ATTR_LIST(inject_type),
540#endif
541 ATTR_LIST(dirty_segments),
542 ATTR_LIST(unusable),
543 ATTR_LIST(lifetime_write_kbytes),
544 ATTR_LIST(features),
545 ATTR_LIST(reserved_blocks),
546 ATTR_LIST(current_reserved_blocks),
547 ATTR_LIST(encoding),
548 NULL,
549};
550ATTRIBUTE_GROUPS(f2fs);
551
552static struct attribute *f2fs_feat_attrs[] = {
553#ifdef CONFIG_FS_ENCRYPTION
554 ATTR_LIST(encryption),
555#endif
556#ifdef CONFIG_BLK_DEV_ZONED
557 ATTR_LIST(block_zoned),
558#endif
559 ATTR_LIST(atomic_write),
560 ATTR_LIST(extra_attr),
561 ATTR_LIST(project_quota),
562 ATTR_LIST(inode_checksum),
563 ATTR_LIST(flexible_inline_xattr),
564 ATTR_LIST(quota_ino),
565 ATTR_LIST(inode_crtime),
566 ATTR_LIST(lost_found),
567#ifdef CONFIG_FS_VERITY
568 ATTR_LIST(verity),
569#endif
570 ATTR_LIST(sb_checksum),
571 ATTR_LIST(casefold),
572 NULL,
573};
574ATTRIBUTE_GROUPS(f2fs_feat);
575
576static const struct sysfs_ops f2fs_attr_ops = {
577 .show = f2fs_attr_show,
578 .store = f2fs_attr_store,
579};
580
581static struct kobj_type f2fs_sb_ktype = {
582 .default_groups = f2fs_groups,
583 .sysfs_ops = &f2fs_attr_ops,
584 .release = f2fs_sb_release,
585};
586
587static struct kobj_type f2fs_ktype = {
588 .sysfs_ops = &f2fs_attr_ops,
589};
590
591static struct kset f2fs_kset = {
592 .kobj = {.ktype = &f2fs_ktype},
593};
594
595static struct kobj_type f2fs_feat_ktype = {
596 .default_groups = f2fs_feat_groups,
597 .sysfs_ops = &f2fs_attr_ops,
598};
599
600static struct kobject f2fs_feat = {
601 .kset = &f2fs_kset,
602};
603
604static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
605 void *offset)
606{
607 struct super_block *sb = seq->private;
608 struct f2fs_sb_info *sbi = F2FS_SB(sb);
609 unsigned int total_segs =
610 le32_to_cpu(sbi->raw_super->segment_count_main);
611 int i;
612
613 seq_puts(seq, "format: segment_type|valid_blocks\n"
614 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
615
616 for (i = 0; i < total_segs; i++) {
617 struct seg_entry *se = get_seg_entry(sbi, i);
618
619 if ((i % 10) == 0)
620 seq_printf(seq, "%-10d", i);
621 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
622 if ((i % 10) == 9 || i == (total_segs - 1))
623 seq_putc(seq, '\n');
624 else
625 seq_putc(seq, ' ');
626 }
627
628 return 0;
629}
630
631static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
632 void *offset)
633{
634 struct super_block *sb = seq->private;
635 struct f2fs_sb_info *sbi = F2FS_SB(sb);
636 unsigned int total_segs =
637 le32_to_cpu(sbi->raw_super->segment_count_main);
638 int i, j;
639
640 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
641 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
642
643 for (i = 0; i < total_segs; i++) {
644 struct seg_entry *se = get_seg_entry(sbi, i);
645
646 seq_printf(seq, "%-10d", i);
647 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
648 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
649 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
650 seq_putc(seq, '\n');
651 }
652 return 0;
653}
654
655static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
656 void *offset)
657{
658 struct super_block *sb = seq->private;
659 struct f2fs_sb_info *sbi = F2FS_SB(sb);
660 time64_t now = ktime_get_real_seconds();
661
662 if (!sbi->iostat_enable)
663 return 0;
664
665 seq_printf(seq, "time: %-16llu\n", now);
666
667 /* print app IOs */
668 seq_printf(seq, "app buffered: %-16llu\n",
669 sbi->write_iostat[APP_BUFFERED_IO]);
670 seq_printf(seq, "app direct: %-16llu\n",
671 sbi->write_iostat[APP_DIRECT_IO]);
672 seq_printf(seq, "app mapped: %-16llu\n",
673 sbi->write_iostat[APP_MAPPED_IO]);
674
675 /* print fs IOs */
676 seq_printf(seq, "fs data: %-16llu\n",
677 sbi->write_iostat[FS_DATA_IO]);
678 seq_printf(seq, "fs node: %-16llu\n",
679 sbi->write_iostat[FS_NODE_IO]);
680 seq_printf(seq, "fs meta: %-16llu\n",
681 sbi->write_iostat[FS_META_IO]);
682 seq_printf(seq, "fs gc data: %-16llu\n",
683 sbi->write_iostat[FS_GC_DATA_IO]);
684 seq_printf(seq, "fs gc node: %-16llu\n",
685 sbi->write_iostat[FS_GC_NODE_IO]);
686 seq_printf(seq, "fs cp data: %-16llu\n",
687 sbi->write_iostat[FS_CP_DATA_IO]);
688 seq_printf(seq, "fs cp node: %-16llu\n",
689 sbi->write_iostat[FS_CP_NODE_IO]);
690 seq_printf(seq, "fs cp meta: %-16llu\n",
691 sbi->write_iostat[FS_CP_META_IO]);
692 seq_printf(seq, "fs discard: %-16llu\n",
693 sbi->write_iostat[FS_DISCARD]);
694
695 return 0;
696}
697
698static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
699 void *offset)
700{
701 struct super_block *sb = seq->private;
702 struct f2fs_sb_info *sbi = F2FS_SB(sb);
703 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
704 int i;
705
706 seq_puts(seq, "format: victim_secmap bitmaps\n");
707
708 for (i = 0; i < MAIN_SECS(sbi); i++) {
709 if ((i % 10) == 0)
710 seq_printf(seq, "%-10d", i);
711 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
712 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
713 seq_putc(seq, '\n');
714 else
715 seq_putc(seq, ' ');
716 }
717 return 0;
718}
719
720int __init f2fs_init_sysfs(void)
721{
722 int ret;
723
724 kobject_set_name(&f2fs_kset.kobj, "f2fs");
725 f2fs_kset.kobj.parent = fs_kobj;
726 ret = kset_register(&f2fs_kset);
727 if (ret)
728 return ret;
729
730 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
731 NULL, "features");
732 if (ret)
733 kset_unregister(&f2fs_kset);
734 else
735 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
736 return ret;
737}
738
739void f2fs_exit_sysfs(void)
740{
741 kobject_put(&f2fs_feat);
742 kset_unregister(&f2fs_kset);
743 remove_proc_entry("fs/f2fs", NULL);
744 f2fs_proc_root = NULL;
745}
746
747int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
748{
749 struct super_block *sb = sbi->sb;
750 int err;
751
752 sbi->s_kobj.kset = &f2fs_kset;
753 init_completion(&sbi->s_kobj_unregister);
754 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
755 "%s", sb->s_id);
756 if (err)
757 return err;
758
759 if (f2fs_proc_root)
760 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
761
762 if (sbi->s_proc) {
763 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc,
764 segment_info_seq_show, sb);
765 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc,
766 segment_bits_seq_show, sb);
767 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc,
768 iostat_info_seq_show, sb);
769 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc,
770 victim_bits_seq_show, sb);
771 }
772 return 0;
773}
774
775void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
776{
777 if (sbi->s_proc) {
778 remove_proc_entry("iostat_info", sbi->s_proc);
779 remove_proc_entry("segment_info", sbi->s_proc);
780 remove_proc_entry("segment_bits", sbi->s_proc);
781 remove_proc_entry("victim_bits", sbi->s_proc);
782 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
783 }
784 kobject_del(&sbi->s_kobj);
785}
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#include <linux/ioprio.h>
15#include <linux/sysfs.h>
16
17#include "f2fs.h"
18#include "segment.h"
19#include "gc.h"
20#include "iostat.h"
21#include <trace/events/f2fs.h>
22
23static struct proc_dir_entry *f2fs_proc_root;
24
25/* Sysfs support for f2fs */
26enum {
27 GC_THREAD, /* struct f2fs_gc_thread */
28 SM_INFO, /* struct f2fs_sm_info */
29 DCC_INFO, /* struct discard_cmd_control */
30 NM_INFO, /* struct f2fs_nm_info */
31 F2FS_SBI, /* struct f2fs_sb_info */
32#ifdef CONFIG_F2FS_STAT_FS
33 STAT_INFO, /* struct f2fs_stat_info */
34#endif
35#ifdef CONFIG_F2FS_FAULT_INJECTION
36 FAULT_INFO_RATE, /* struct f2fs_fault_info */
37 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
38#endif
39 RESERVED_BLOCKS, /* struct f2fs_sb_info */
40 CPRC_INFO, /* struct ckpt_req_control */
41 ATGC_INFO, /* struct atgc_management */
42};
43
44static const char *gc_mode_names[MAX_GC_MODE] = {
45 "GC_NORMAL",
46 "GC_IDLE_CB",
47 "GC_IDLE_GREEDY",
48 "GC_IDLE_AT",
49 "GC_URGENT_HIGH",
50 "GC_URGENT_LOW",
51 "GC_URGENT_MID"
52};
53
54struct f2fs_attr {
55 struct attribute attr;
56 ssize_t (*show)(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf);
57 ssize_t (*store)(struct f2fs_attr *a, struct f2fs_sb_info *sbi,
58 const char *buf, size_t len);
59 int struct_type;
60 int offset;
61 int id;
62};
63
64static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
65 struct f2fs_sb_info *sbi, char *buf);
66
67static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
68{
69 if (struct_type == GC_THREAD)
70 return (unsigned char *)sbi->gc_thread;
71 else if (struct_type == SM_INFO)
72 return (unsigned char *)SM_I(sbi);
73 else if (struct_type == DCC_INFO)
74 return (unsigned char *)SM_I(sbi)->dcc_info;
75 else if (struct_type == NM_INFO)
76 return (unsigned char *)NM_I(sbi);
77 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
78 return (unsigned char *)sbi;
79#ifdef CONFIG_F2FS_FAULT_INJECTION
80 else if (struct_type == FAULT_INFO_RATE ||
81 struct_type == FAULT_INFO_TYPE)
82 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
83#endif
84#ifdef CONFIG_F2FS_STAT_FS
85 else if (struct_type == STAT_INFO)
86 return (unsigned char *)F2FS_STAT(sbi);
87#endif
88 else if (struct_type == CPRC_INFO)
89 return (unsigned char *)&sbi->cprc_info;
90 else if (struct_type == ATGC_INFO)
91 return (unsigned char *)&sbi->am;
92 return NULL;
93}
94
95static ssize_t dirty_segments_show(struct f2fs_attr *a,
96 struct f2fs_sb_info *sbi, char *buf)
97{
98 return sysfs_emit(buf, "%llu\n",
99 (unsigned long long)(dirty_segments(sbi)));
100}
101
102static ssize_t free_segments_show(struct f2fs_attr *a,
103 struct f2fs_sb_info *sbi, char *buf)
104{
105 return sysfs_emit(buf, "%llu\n",
106 (unsigned long long)(free_segments(sbi)));
107}
108
109static ssize_t ovp_segments_show(struct f2fs_attr *a,
110 struct f2fs_sb_info *sbi, char *buf)
111{
112 return sysfs_emit(buf, "%llu\n",
113 (unsigned long long)(overprovision_segments(sbi)));
114}
115
116static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
117 struct f2fs_sb_info *sbi, char *buf)
118{
119 return sysfs_emit(buf, "%llu\n",
120 (unsigned long long)(sbi->kbytes_written +
121 ((f2fs_get_sectors_written(sbi) -
122 sbi->sectors_written_start) >> 1)));
123}
124
125static ssize_t sb_status_show(struct f2fs_attr *a,
126 struct f2fs_sb_info *sbi, char *buf)
127{
128 return sysfs_emit(buf, "%lx\n", sbi->s_flag);
129}
130
131static ssize_t cp_status_show(struct f2fs_attr *a,
132 struct f2fs_sb_info *sbi, char *buf)
133{
134 return sysfs_emit(buf, "%x\n", le32_to_cpu(F2FS_CKPT(sbi)->ckpt_flags));
135}
136
137static ssize_t pending_discard_show(struct f2fs_attr *a,
138 struct f2fs_sb_info *sbi, char *buf)
139{
140 if (!SM_I(sbi)->dcc_info)
141 return -EINVAL;
142 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
143 &SM_I(sbi)->dcc_info->discard_cmd_cnt));
144}
145
146static ssize_t issued_discard_show(struct f2fs_attr *a,
147 struct f2fs_sb_info *sbi, char *buf)
148{
149 if (!SM_I(sbi)->dcc_info)
150 return -EINVAL;
151 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
152 &SM_I(sbi)->dcc_info->issued_discard));
153}
154
155static ssize_t queued_discard_show(struct f2fs_attr *a,
156 struct f2fs_sb_info *sbi, char *buf)
157{
158 if (!SM_I(sbi)->dcc_info)
159 return -EINVAL;
160 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
161 &SM_I(sbi)->dcc_info->queued_discard));
162}
163
164static ssize_t undiscard_blks_show(struct f2fs_attr *a,
165 struct f2fs_sb_info *sbi, char *buf)
166{
167 if (!SM_I(sbi)->dcc_info)
168 return -EINVAL;
169 return sysfs_emit(buf, "%u\n",
170 SM_I(sbi)->dcc_info->undiscard_blks);
171}
172
173static ssize_t atgc_enabled_show(struct f2fs_attr *a,
174 struct f2fs_sb_info *sbi, char *buf)
175{
176 return sysfs_emit(buf, "%d\n", sbi->am.atgc_enabled ? 1 : 0);
177}
178
179static ssize_t gc_mode_show(struct f2fs_attr *a,
180 struct f2fs_sb_info *sbi, char *buf)
181{
182 return sysfs_emit(buf, "%s\n", gc_mode_names[sbi->gc_mode]);
183}
184
185static ssize_t features_show(struct f2fs_attr *a,
186 struct f2fs_sb_info *sbi, char *buf)
187{
188 int len = 0;
189
190 if (f2fs_sb_has_encrypt(sbi))
191 len += sysfs_emit_at(buf, len, "%s",
192 "encryption");
193 if (f2fs_sb_has_blkzoned(sbi))
194 len += sysfs_emit_at(buf, len, "%s%s",
195 len ? ", " : "", "blkzoned");
196 if (f2fs_sb_has_extra_attr(sbi))
197 len += sysfs_emit_at(buf, len, "%s%s",
198 len ? ", " : "", "extra_attr");
199 if (f2fs_sb_has_project_quota(sbi))
200 len += sysfs_emit_at(buf, len, "%s%s",
201 len ? ", " : "", "projquota");
202 if (f2fs_sb_has_inode_chksum(sbi))
203 len += sysfs_emit_at(buf, len, "%s%s",
204 len ? ", " : "", "inode_checksum");
205 if (f2fs_sb_has_flexible_inline_xattr(sbi))
206 len += sysfs_emit_at(buf, len, "%s%s",
207 len ? ", " : "", "flexible_inline_xattr");
208 if (f2fs_sb_has_quota_ino(sbi))
209 len += sysfs_emit_at(buf, len, "%s%s",
210 len ? ", " : "", "quota_ino");
211 if (f2fs_sb_has_inode_crtime(sbi))
212 len += sysfs_emit_at(buf, len, "%s%s",
213 len ? ", " : "", "inode_crtime");
214 if (f2fs_sb_has_lost_found(sbi))
215 len += sysfs_emit_at(buf, len, "%s%s",
216 len ? ", " : "", "lost_found");
217 if (f2fs_sb_has_verity(sbi))
218 len += sysfs_emit_at(buf, len, "%s%s",
219 len ? ", " : "", "verity");
220 if (f2fs_sb_has_sb_chksum(sbi))
221 len += sysfs_emit_at(buf, len, "%s%s",
222 len ? ", " : "", "sb_checksum");
223 if (f2fs_sb_has_casefold(sbi))
224 len += sysfs_emit_at(buf, len, "%s%s",
225 len ? ", " : "", "casefold");
226 if (f2fs_sb_has_readonly(sbi))
227 len += sysfs_emit_at(buf, len, "%s%s",
228 len ? ", " : "", "readonly");
229 if (f2fs_sb_has_compression(sbi))
230 len += sysfs_emit_at(buf, len, "%s%s",
231 len ? ", " : "", "compression");
232 len += sysfs_emit_at(buf, len, "%s%s",
233 len ? ", " : "", "pin_file");
234 len += sysfs_emit_at(buf, len, "\n");
235 return len;
236}
237
238static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
239 struct f2fs_sb_info *sbi, char *buf)
240{
241 return sysfs_emit(buf, "%u\n", sbi->current_reserved_blocks);
242}
243
244static ssize_t unusable_show(struct f2fs_attr *a,
245 struct f2fs_sb_info *sbi, char *buf)
246{
247 block_t unusable;
248
249 if (test_opt(sbi, DISABLE_CHECKPOINT))
250 unusable = sbi->unusable_block_count;
251 else
252 unusable = f2fs_get_unusable_blocks(sbi);
253 return sysfs_emit(buf, "%llu\n", (unsigned long long)unusable);
254}
255
256static ssize_t encoding_show(struct f2fs_attr *a,
257 struct f2fs_sb_info *sbi, char *buf)
258{
259#if IS_ENABLED(CONFIG_UNICODE)
260 struct super_block *sb = sbi->sb;
261
262 if (f2fs_sb_has_casefold(sbi))
263 return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n",
264 (sb->s_encoding->version >> 16) & 0xff,
265 (sb->s_encoding->version >> 8) & 0xff,
266 sb->s_encoding->version & 0xff);
267#endif
268 return sysfs_emit(buf, "(none)\n");
269}
270
271static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
272 struct f2fs_sb_info *sbi, char *buf)
273{
274 return sysfs_emit(buf, "%llu\n", SIT_I(sbi)->mounted_time);
275}
276
277#ifdef CONFIG_F2FS_STAT_FS
278static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
279 struct f2fs_sb_info *sbi, char *buf)
280{
281 struct f2fs_stat_info *si = F2FS_STAT(sbi);
282
283 return sysfs_emit(buf, "%llu\n",
284 (unsigned long long)(si->tot_blks -
285 (si->bg_data_blks + si->bg_node_blks)));
286}
287
288static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
289 struct f2fs_sb_info *sbi, char *buf)
290{
291 struct f2fs_stat_info *si = F2FS_STAT(sbi);
292
293 return sysfs_emit(buf, "%llu\n",
294 (unsigned long long)(si->bg_data_blks + si->bg_node_blks));
295}
296
297static ssize_t avg_vblocks_show(struct f2fs_attr *a,
298 struct f2fs_sb_info *sbi, char *buf)
299{
300 struct f2fs_stat_info *si = F2FS_STAT(sbi);
301
302 si->dirty_count = dirty_segments(sbi);
303 f2fs_update_sit_info(sbi);
304 return sysfs_emit(buf, "%llu\n", (unsigned long long)(si->avg_vblocks));
305}
306#endif
307
308static ssize_t main_blkaddr_show(struct f2fs_attr *a,
309 struct f2fs_sb_info *sbi, char *buf)
310{
311 return sysfs_emit(buf, "%llu\n",
312 (unsigned long long)MAIN_BLKADDR(sbi));
313}
314
315static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
316 struct f2fs_sb_info *sbi, char *buf)
317{
318 unsigned char *ptr = NULL;
319 unsigned int *ui;
320
321 ptr = __struct_ptr(sbi, a->struct_type);
322 if (!ptr)
323 return -EINVAL;
324
325 if (!strcmp(a->attr.name, "extension_list")) {
326 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
327 sbi->raw_super->extension_list;
328 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
329 int hot_count = sbi->raw_super->hot_ext_count;
330 int len = 0, i;
331
332 len += sysfs_emit_at(buf, len, "cold file extension:\n");
333 for (i = 0; i < cold_count; i++)
334 len += sysfs_emit_at(buf, len, "%s\n", extlist[i]);
335
336 len += sysfs_emit_at(buf, len, "hot file extension:\n");
337 for (i = cold_count; i < cold_count + hot_count; i++)
338 len += sysfs_emit_at(buf, len, "%s\n", extlist[i]);
339
340 return len;
341 }
342
343 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
344 struct ckpt_req_control *cprc = &sbi->cprc_info;
345 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio);
346 int level = IOPRIO_PRIO_LEVEL(cprc->ckpt_thread_ioprio);
347
348 if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE)
349 return -EINVAL;
350
351 return sysfs_emit(buf, "%s,%d\n",
352 class == IOPRIO_CLASS_RT ? "rt" : "be", level);
353 }
354
355#ifdef CONFIG_F2FS_FS_COMPRESSION
356 if (!strcmp(a->attr.name, "compr_written_block"))
357 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block);
358
359 if (!strcmp(a->attr.name, "compr_saved_block"))
360 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block);
361
362 if (!strcmp(a->attr.name, "compr_new_inode"))
363 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode);
364#endif
365
366 if (!strcmp(a->attr.name, "gc_segment_mode"))
367 return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode);
368
369 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
370 return sysfs_emit(buf, "%u\n",
371 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]);
372 }
373
374 if (!strcmp(a->attr.name, "current_atomic_write")) {
375 s64 current_write = atomic64_read(&sbi->current_atomic_write);
376
377 return sysfs_emit(buf, "%lld\n", current_write);
378 }
379
380 if (!strcmp(a->attr.name, "peak_atomic_write"))
381 return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write);
382
383 if (!strcmp(a->attr.name, "committed_atomic_block"))
384 return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block);
385
386 if (!strcmp(a->attr.name, "revoked_atomic_block"))
387 return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block);
388
389#ifdef CONFIG_F2FS_STAT_FS
390 if (!strcmp(a->attr.name, "cp_foreground_calls"))
391 return sysfs_emit(buf, "%d\n",
392 atomic_read(&sbi->cp_call_count[TOTAL_CALL]) -
393 atomic_read(&sbi->cp_call_count[BACKGROUND]));
394 if (!strcmp(a->attr.name, "cp_background_calls"))
395 return sysfs_emit(buf, "%d\n",
396 atomic_read(&sbi->cp_call_count[BACKGROUND]));
397#endif
398
399 ui = (unsigned int *)(ptr + a->offset);
400
401 return sysfs_emit(buf, "%u\n", *ui);
402}
403
404static ssize_t __sbi_store(struct f2fs_attr *a,
405 struct f2fs_sb_info *sbi,
406 const char *buf, size_t count)
407{
408 unsigned char *ptr;
409 unsigned long t;
410 unsigned int *ui;
411 ssize_t ret;
412
413 ptr = __struct_ptr(sbi, a->struct_type);
414 if (!ptr)
415 return -EINVAL;
416
417 if (!strcmp(a->attr.name, "extension_list")) {
418 const char *name = strim((char *)buf);
419 bool set = true, hot;
420
421 if (!strncmp(name, "[h]", 3))
422 hot = true;
423 else if (!strncmp(name, "[c]", 3))
424 hot = false;
425 else
426 return -EINVAL;
427
428 name += 3;
429
430 if (*name == '!') {
431 name++;
432 set = false;
433 }
434
435 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN)
436 return -EINVAL;
437
438 f2fs_down_write(&sbi->sb_lock);
439
440 ret = f2fs_update_extension_list(sbi, name, hot, set);
441 if (ret)
442 goto out;
443
444 ret = f2fs_commit_super(sbi, false);
445 if (ret)
446 f2fs_update_extension_list(sbi, name, hot, !set);
447out:
448 f2fs_up_write(&sbi->sb_lock);
449 return ret ? ret : count;
450 }
451
452 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
453 const char *name = strim((char *)buf);
454 struct ckpt_req_control *cprc = &sbi->cprc_info;
455 int class;
456 long level;
457 int ret;
458
459 if (!strncmp(name, "rt,", 3))
460 class = IOPRIO_CLASS_RT;
461 else if (!strncmp(name, "be,", 3))
462 class = IOPRIO_CLASS_BE;
463 else
464 return -EINVAL;
465
466 name += 3;
467 ret = kstrtol(name, 10, &level);
468 if (ret)
469 return ret;
470 if (level >= IOPRIO_NR_LEVELS || level < 0)
471 return -EINVAL;
472
473 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, level);
474 if (test_opt(sbi, MERGE_CHECKPOINT)) {
475 ret = set_task_ioprio(cprc->f2fs_issue_ckpt,
476 cprc->ckpt_thread_ioprio);
477 if (ret)
478 return ret;
479 }
480
481 return count;
482 }
483
484 ui = (unsigned int *)(ptr + a->offset);
485
486 ret = kstrtoul(skip_spaces(buf), 0, &t);
487 if (ret < 0)
488 return ret;
489#ifdef CONFIG_F2FS_FAULT_INJECTION
490 if (a->struct_type == FAULT_INFO_TYPE) {
491 if (f2fs_build_fault_attr(sbi, 0, t))
492 return -EINVAL;
493 return count;
494 }
495 if (a->struct_type == FAULT_INFO_RATE) {
496 if (f2fs_build_fault_attr(sbi, t, 0))
497 return -EINVAL;
498 return count;
499 }
500#endif
501 if (a->struct_type == RESERVED_BLOCKS) {
502 spin_lock(&sbi->stat_lock);
503 if (t > (unsigned long)(sbi->user_block_count -
504 F2FS_OPTION(sbi).root_reserved_blocks)) {
505 spin_unlock(&sbi->stat_lock);
506 return -EINVAL;
507 }
508 *ui = t;
509 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
510 sbi->user_block_count - valid_user_blocks(sbi));
511 spin_unlock(&sbi->stat_lock);
512 return count;
513 }
514
515 if (!strcmp(a->attr.name, "discard_io_aware_gran")) {
516 if (t > MAX_PLIST_NUM)
517 return -EINVAL;
518 if (!f2fs_block_unit_discard(sbi))
519 return -EINVAL;
520 if (t == *ui)
521 return count;
522 *ui = t;
523 return count;
524 }
525
526 if (!strcmp(a->attr.name, "discard_granularity")) {
527 if (t == 0 || t > MAX_PLIST_NUM)
528 return -EINVAL;
529 if (!f2fs_block_unit_discard(sbi))
530 return -EINVAL;
531 if (t == *ui)
532 return count;
533 *ui = t;
534 return count;
535 }
536
537 if (!strcmp(a->attr.name, "max_ordered_discard")) {
538 if (t == 0 || t > MAX_PLIST_NUM)
539 return -EINVAL;
540 if (!f2fs_block_unit_discard(sbi))
541 return -EINVAL;
542 *ui = t;
543 return count;
544 }
545
546 if (!strcmp(a->attr.name, "discard_urgent_util")) {
547 if (t > 100)
548 return -EINVAL;
549 *ui = t;
550 return count;
551 }
552
553 if (!strcmp(a->attr.name, "discard_io_aware")) {
554 if (t >= DPOLICY_IO_AWARE_MAX)
555 return -EINVAL;
556 *ui = t;
557 return count;
558 }
559
560 if (!strcmp(a->attr.name, "migration_granularity")) {
561 if (t == 0 || t > SEGS_PER_SEC(sbi))
562 return -EINVAL;
563 }
564
565 if (!strcmp(a->attr.name, "migration_window_granularity")) {
566 if (t == 0 || t > SEGS_PER_SEC(sbi))
567 return -EINVAL;
568 }
569
570 if (!strcmp(a->attr.name, "gc_urgent")) {
571 if (t == 0) {
572 sbi->gc_mode = GC_NORMAL;
573 } else if (t == 1) {
574 sbi->gc_mode = GC_URGENT_HIGH;
575 if (sbi->gc_thread) {
576 sbi->gc_thread->gc_wake = true;
577 wake_up_interruptible_all(
578 &sbi->gc_thread->gc_wait_queue_head);
579 wake_up_discard_thread(sbi, true);
580 }
581 } else if (t == 2) {
582 sbi->gc_mode = GC_URGENT_LOW;
583 } else if (t == 3) {
584 sbi->gc_mode = GC_URGENT_MID;
585 if (sbi->gc_thread) {
586 sbi->gc_thread->gc_wake = true;
587 wake_up_interruptible_all(
588 &sbi->gc_thread->gc_wait_queue_head);
589 }
590 } else {
591 return -EINVAL;
592 }
593 return count;
594 }
595 if (!strcmp(a->attr.name, "gc_idle")) {
596 if (t == GC_IDLE_CB) {
597 sbi->gc_mode = GC_IDLE_CB;
598 } else if (t == GC_IDLE_GREEDY) {
599 sbi->gc_mode = GC_IDLE_GREEDY;
600 } else if (t == GC_IDLE_AT) {
601 if (!sbi->am.atgc_enabled)
602 return -EINVAL;
603 sbi->gc_mode = GC_IDLE_AT;
604 } else {
605 sbi->gc_mode = GC_NORMAL;
606 }
607 return count;
608 }
609
610 if (!strcmp(a->attr.name, "gc_remaining_trials")) {
611 spin_lock(&sbi->gc_remaining_trials_lock);
612 sbi->gc_remaining_trials = t;
613 spin_unlock(&sbi->gc_remaining_trials_lock);
614
615 return count;
616 }
617
618#ifdef CONFIG_F2FS_IOSTAT
619 if (!strcmp(a->attr.name, "iostat_enable")) {
620 sbi->iostat_enable = !!t;
621 if (!sbi->iostat_enable)
622 f2fs_reset_iostat(sbi);
623 return count;
624 }
625
626 if (!strcmp(a->attr.name, "iostat_period_ms")) {
627 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS)
628 return -EINVAL;
629 spin_lock_irq(&sbi->iostat_lock);
630 sbi->iostat_period_ms = (unsigned int)t;
631 spin_unlock_irq(&sbi->iostat_lock);
632 return count;
633 }
634#endif
635
636#ifdef CONFIG_BLK_DEV_ZONED
637 if (!strcmp(a->attr.name, "blkzone_alloc_policy")) {
638 if (t < BLKZONE_ALLOC_PRIOR_SEQ || t > BLKZONE_ALLOC_PRIOR_CONV)
639 return -EINVAL;
640 sbi->blkzone_alloc_policy = t;
641 return count;
642 }
643#endif
644
645#ifdef CONFIG_F2FS_FS_COMPRESSION
646 if (!strcmp(a->attr.name, "compr_written_block") ||
647 !strcmp(a->attr.name, "compr_saved_block")) {
648 if (t != 0)
649 return -EINVAL;
650 sbi->compr_written_block = 0;
651 sbi->compr_saved_block = 0;
652 return count;
653 }
654
655 if (!strcmp(a->attr.name, "compr_new_inode")) {
656 if (t != 0)
657 return -EINVAL;
658 sbi->compr_new_inode = 0;
659 return count;
660 }
661
662 if (!strcmp(a->attr.name, "compress_percent")) {
663 if (t == 0 || t > 100)
664 return -EINVAL;
665 *ui = t;
666 return count;
667 }
668
669 if (!strcmp(a->attr.name, "compress_watermark")) {
670 if (t == 0 || t > 100)
671 return -EINVAL;
672 *ui = t;
673 return count;
674 }
675#endif
676
677 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
678 if (t > 100)
679 return -EINVAL;
680 sbi->am.candidate_ratio = t;
681 return count;
682 }
683
684 if (!strcmp(a->attr.name, "atgc_age_weight")) {
685 if (t > 100)
686 return -EINVAL;
687 sbi->am.age_weight = t;
688 return count;
689 }
690
691 if (!strcmp(a->attr.name, "gc_segment_mode")) {
692 if (t < MAX_GC_MODE)
693 sbi->gc_segment_mode = t;
694 else
695 return -EINVAL;
696 return count;
697 }
698
699 if (!strcmp(a->attr.name, "gc_pin_file_threshold")) {
700 if (t > MAX_GC_FAILED_PINNED_FILES)
701 return -EINVAL;
702 sbi->gc_pin_file_threshold = t;
703 return count;
704 }
705
706 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
707 if (t != 0)
708 return -EINVAL;
709 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0;
710 return count;
711 }
712
713 if (!strcmp(a->attr.name, "seq_file_ra_mul")) {
714 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL)
715 sbi->seq_file_ra_mul = t;
716 else
717 return -EINVAL;
718 return count;
719 }
720
721 if (!strcmp(a->attr.name, "max_fragment_chunk")) {
722 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
723 sbi->max_fragment_chunk = t;
724 else
725 return -EINVAL;
726 return count;
727 }
728
729 if (!strcmp(a->attr.name, "max_fragment_hole")) {
730 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
731 sbi->max_fragment_hole = t;
732 else
733 return -EINVAL;
734 return count;
735 }
736
737 if (!strcmp(a->attr.name, "peak_atomic_write")) {
738 if (t != 0)
739 return -EINVAL;
740 sbi->peak_atomic_write = 0;
741 return count;
742 }
743
744 if (!strcmp(a->attr.name, "committed_atomic_block")) {
745 if (t != 0)
746 return -EINVAL;
747 sbi->committed_atomic_block = 0;
748 return count;
749 }
750
751 if (!strcmp(a->attr.name, "revoked_atomic_block")) {
752 if (t != 0)
753 return -EINVAL;
754 sbi->revoked_atomic_block = 0;
755 return count;
756 }
757
758 if (!strcmp(a->attr.name, "readdir_ra")) {
759 sbi->readdir_ra = !!t;
760 return count;
761 }
762
763 if (!strcmp(a->attr.name, "hot_data_age_threshold")) {
764 if (t == 0 || t >= sbi->warm_data_age_threshold)
765 return -EINVAL;
766 if (t == *ui)
767 return count;
768 *ui = (unsigned int)t;
769 return count;
770 }
771
772 if (!strcmp(a->attr.name, "warm_data_age_threshold")) {
773 if (t <= sbi->hot_data_age_threshold)
774 return -EINVAL;
775 if (t == *ui)
776 return count;
777 *ui = (unsigned int)t;
778 return count;
779 }
780
781 if (!strcmp(a->attr.name, "last_age_weight")) {
782 if (t > 100)
783 return -EINVAL;
784 if (t == *ui)
785 return count;
786 *ui = (unsigned int)t;
787 return count;
788 }
789
790 if (!strcmp(a->attr.name, "max_read_extent_count")) {
791 if (t > UINT_MAX)
792 return -EINVAL;
793 *ui = (unsigned int)t;
794 return count;
795 }
796
797 if (!strcmp(a->attr.name, "ipu_policy")) {
798 if (t >= BIT(F2FS_IPU_MAX))
799 return -EINVAL;
800 /* allow F2FS_IPU_NOCACHE only for IPU in the pinned file */
801 if (f2fs_lfs_mode(sbi) && (t & ~BIT(F2FS_IPU_NOCACHE)))
802 return -EINVAL;
803 SM_I(sbi)->ipu_policy = (unsigned int)t;
804 return count;
805 }
806
807 if (!strcmp(a->attr.name, "dir_level")) {
808 if (t > MAX_DIR_HASH_DEPTH)
809 return -EINVAL;
810 sbi->dir_level = t;
811 return count;
812 }
813
814 *ui = (unsigned int)t;
815
816 return count;
817}
818
819static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
820 struct f2fs_sb_info *sbi,
821 const char *buf, size_t count)
822{
823 ssize_t ret;
824 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
825 a->struct_type == GC_THREAD);
826
827 if (gc_entry) {
828 if (!down_read_trylock(&sbi->sb->s_umount))
829 return -EAGAIN;
830 }
831 ret = __sbi_store(a, sbi, buf, count);
832 if (gc_entry)
833 up_read(&sbi->sb->s_umount);
834
835 return ret;
836}
837
838static ssize_t f2fs_attr_show(struct kobject *kobj,
839 struct attribute *attr, char *buf)
840{
841 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
842 s_kobj);
843 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
844
845 return a->show ? a->show(a, sbi, buf) : 0;
846}
847
848static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
849 const char *buf, size_t len)
850{
851 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
852 s_kobj);
853 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
854
855 return a->store ? a->store(a, sbi, buf, len) : 0;
856}
857
858static void f2fs_sb_release(struct kobject *kobj)
859{
860 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
861 s_kobj);
862 complete(&sbi->s_kobj_unregister);
863}
864
865/*
866 * Note that there are three feature list entries:
867 * 1) /sys/fs/f2fs/features
868 * : shows runtime features supported by in-kernel f2fs along with Kconfig.
869 * - ref. F2FS_FEATURE_RO_ATTR()
870 *
871 * 2) /sys/fs/f2fs/$s_id/features <deprecated>
872 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
873 * won't add new feature anymore, and thus, users should check entries in 3)
874 * instead of this 2).
875 *
876 * 3) /sys/fs/f2fs/$s_id/feature_list
877 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows
878 * sysfs entry rule where each entry should expose single value.
879 * This list covers old feature list provided by 2) and beyond. Therefore,
880 * please add new on-disk feature in this list only.
881 * - ref. F2FS_SB_FEATURE_RO_ATTR()
882 */
883static ssize_t f2fs_feature_show(struct f2fs_attr *a,
884 struct f2fs_sb_info *sbi, char *buf)
885{
886 return sysfs_emit(buf, "supported\n");
887}
888
889#define F2FS_FEATURE_RO_ATTR(_name) \
890static struct f2fs_attr f2fs_attr_##_name = { \
891 .attr = {.name = __stringify(_name), .mode = 0444 }, \
892 .show = f2fs_feature_show, \
893}
894
895static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
896 struct f2fs_sb_info *sbi, char *buf)
897{
898 if (F2FS_HAS_FEATURE(sbi, a->id))
899 return sysfs_emit(buf, "supported\n");
900 return sysfs_emit(buf, "unsupported\n");
901}
902
903#define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \
904static struct f2fs_attr f2fs_attr_sb_##_name = { \
905 .attr = {.name = __stringify(_name), .mode = 0444 }, \
906 .show = f2fs_sb_feature_show, \
907 .id = F2FS_FEATURE_##_feat, \
908}
909
910#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
911static struct f2fs_attr f2fs_attr_##_name = { \
912 .attr = {.name = __stringify(_name), .mode = _mode }, \
913 .show = _show, \
914 .store = _store, \
915 .struct_type = _struct_type, \
916 .offset = _offset \
917}
918
919#define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \
920 F2FS_ATTR_OFFSET(struct_type, name, 0444, \
921 f2fs_sbi_show, NULL, \
922 offsetof(struct struct_name, elname))
923
924#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
925 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
926 f2fs_sbi_show, f2fs_sbi_store, \
927 offsetof(struct struct_name, elname))
928
929#define F2FS_GENERAL_RO_ATTR(name) \
930static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
931
932#ifdef CONFIG_F2FS_STAT_FS
933#define STAT_INFO_RO_ATTR(name, elname) \
934 F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname)
935#endif
936
937#define GC_THREAD_RW_ATTR(name, elname) \
938 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname)
939
940#define SM_INFO_RW_ATTR(name, elname) \
941 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname)
942
943#define SM_INFO_GENERAL_RW_ATTR(elname) \
944 SM_INFO_RW_ATTR(elname, elname)
945
946#define DCC_INFO_RW_ATTR(name, elname) \
947 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname)
948
949#define DCC_INFO_GENERAL_RW_ATTR(elname) \
950 DCC_INFO_RW_ATTR(elname, elname)
951
952#define NM_INFO_RW_ATTR(name, elname) \
953 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname)
954
955#define NM_INFO_GENERAL_RW_ATTR(elname) \
956 NM_INFO_RW_ATTR(elname, elname)
957
958#define F2FS_SBI_RW_ATTR(name, elname) \
959 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname)
960
961#define F2FS_SBI_GENERAL_RW_ATTR(elname) \
962 F2FS_SBI_RW_ATTR(elname, elname)
963
964#define F2FS_SBI_GENERAL_RO_ATTR(elname) \
965 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname)
966
967#ifdef CONFIG_F2FS_FAULT_INJECTION
968#define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \
969 F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname)
970#endif
971
972#define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \
973 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname)
974
975#define CPRC_INFO_GENERAL_RW_ATTR(elname) \
976 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname)
977
978#define ATGC_INFO_RW_ATTR(name, elname) \
979 F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname)
980
981/* GC_THREAD ATTR */
982GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time);
983GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time);
984GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time);
985GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
986GC_THREAD_RW_ATTR(gc_no_zoned_gc_percent, no_zoned_gc_percent);
987GC_THREAD_RW_ATTR(gc_boost_zoned_gc_percent, boost_zoned_gc_percent);
988GC_THREAD_RW_ATTR(gc_valid_thresh_ratio, valid_thresh_ratio);
989
990/* SM_INFO ATTR */
991SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments);
992SM_INFO_GENERAL_RW_ATTR(ipu_policy);
993SM_INFO_GENERAL_RW_ATTR(min_ipu_util);
994SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks);
995SM_INFO_GENERAL_RW_ATTR(min_seq_blocks);
996SM_INFO_GENERAL_RW_ATTR(min_hot_blocks);
997SM_INFO_GENERAL_RW_ATTR(min_ssr_sections);
998SM_INFO_GENERAL_RW_ATTR(reserved_segments);
999
1000/* DCC_INFO ATTR */
1001DCC_INFO_RW_ATTR(max_small_discards, max_discards);
1002DCC_INFO_GENERAL_RW_ATTR(max_discard_request);
1003DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time);
1004DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time);
1005DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time);
1006DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran);
1007DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util);
1008DCC_INFO_GENERAL_RW_ATTR(discard_granularity);
1009DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard);
1010DCC_INFO_GENERAL_RW_ATTR(discard_io_aware);
1011
1012/* NM_INFO ATTR */
1013NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks);
1014NM_INFO_GENERAL_RW_ATTR(ram_thresh);
1015NM_INFO_GENERAL_RW_ATTR(ra_nid_pages);
1016NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio);
1017
1018/* F2FS_SBI ATTR */
1019F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
1020F2FS_SBI_RW_ATTR(gc_idle, gc_mode);
1021F2FS_SBI_RW_ATTR(gc_urgent, gc_mode);
1022F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]);
1023F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]);
1024F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]);
1025F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]);
1026F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
1027F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold);
1028F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs);
1029F2FS_SBI_GENERAL_RW_ATTR(max_victim_search);
1030F2FS_SBI_GENERAL_RW_ATTR(migration_granularity);
1031F2FS_SBI_GENERAL_RW_ATTR(migration_window_granularity);
1032F2FS_SBI_GENERAL_RW_ATTR(dir_level);
1033#ifdef CONFIG_F2FS_IOSTAT
1034F2FS_SBI_GENERAL_RW_ATTR(iostat_enable);
1035F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms);
1036#endif
1037F2FS_SBI_GENERAL_RW_ATTR(readdir_ra);
1038F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes);
1039F2FS_SBI_GENERAL_RW_ATTR(data_io_flag);
1040F2FS_SBI_GENERAL_RW_ATTR(node_io_flag);
1041F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials);
1042F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul);
1043F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode);
1044F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk);
1045F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole);
1046#ifdef CONFIG_F2FS_FS_COMPRESSION
1047F2FS_SBI_GENERAL_RW_ATTR(compr_written_block);
1048F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block);
1049F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode);
1050F2FS_SBI_GENERAL_RW_ATTR(compress_percent);
1051F2FS_SBI_GENERAL_RW_ATTR(compress_watermark);
1052#endif
1053/* atomic write */
1054F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write);
1055F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write);
1056F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block);
1057F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
1058/* block age extent cache */
1059F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
1060F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
1061F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
1062/* read extent cache */
1063F2FS_SBI_GENERAL_RW_ATTR(max_read_extent_count);
1064#ifdef CONFIG_BLK_DEV_ZONED
1065F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
1066F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy);
1067#endif
1068
1069/* STAT_INFO ATTR */
1070#ifdef CONFIG_F2FS_STAT_FS
1071STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]);
1072STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]);
1073STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]);
1074STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]);
1075#endif
1076
1077/* FAULT_INFO ATTR */
1078#ifdef CONFIG_F2FS_FAULT_INJECTION
1079FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate);
1080FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type);
1081#endif
1082
1083/* RESERVED_BLOCKS ATTR */
1084RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks);
1085
1086/* CPRC_INFO ATTR */
1087CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio);
1088
1089/* ATGC_INFO ATTR */
1090ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio);
1091ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count);
1092ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight);
1093ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold);
1094
1095F2FS_GENERAL_RO_ATTR(dirty_segments);
1096F2FS_GENERAL_RO_ATTR(free_segments);
1097F2FS_GENERAL_RO_ATTR(ovp_segments);
1098F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
1099F2FS_GENERAL_RO_ATTR(features);
1100F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
1101F2FS_GENERAL_RO_ATTR(unusable);
1102F2FS_GENERAL_RO_ATTR(encoding);
1103F2FS_GENERAL_RO_ATTR(mounted_time_sec);
1104F2FS_GENERAL_RO_ATTR(main_blkaddr);
1105F2FS_GENERAL_RO_ATTR(pending_discard);
1106F2FS_GENERAL_RO_ATTR(atgc_enabled);
1107F2FS_GENERAL_RO_ATTR(gc_mode);
1108#ifdef CONFIG_F2FS_STAT_FS
1109F2FS_GENERAL_RO_ATTR(moved_blocks_background);
1110F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
1111F2FS_GENERAL_RO_ATTR(avg_vblocks);
1112#endif
1113
1114#ifdef CONFIG_FS_ENCRYPTION
1115F2FS_FEATURE_RO_ATTR(encryption);
1116F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
1117#if IS_ENABLED(CONFIG_UNICODE)
1118F2FS_FEATURE_RO_ATTR(encrypted_casefold);
1119#endif
1120#endif /* CONFIG_FS_ENCRYPTION */
1121#ifdef CONFIG_BLK_DEV_ZONED
1122F2FS_FEATURE_RO_ATTR(block_zoned);
1123#endif
1124F2FS_FEATURE_RO_ATTR(atomic_write);
1125F2FS_FEATURE_RO_ATTR(extra_attr);
1126F2FS_FEATURE_RO_ATTR(project_quota);
1127F2FS_FEATURE_RO_ATTR(inode_checksum);
1128F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
1129F2FS_FEATURE_RO_ATTR(quota_ino);
1130F2FS_FEATURE_RO_ATTR(inode_crtime);
1131F2FS_FEATURE_RO_ATTR(lost_found);
1132#ifdef CONFIG_FS_VERITY
1133F2FS_FEATURE_RO_ATTR(verity);
1134#endif
1135F2FS_FEATURE_RO_ATTR(sb_checksum);
1136#if IS_ENABLED(CONFIG_UNICODE)
1137F2FS_FEATURE_RO_ATTR(casefold);
1138#endif
1139F2FS_FEATURE_RO_ATTR(readonly);
1140#ifdef CONFIG_F2FS_FS_COMPRESSION
1141F2FS_FEATURE_RO_ATTR(compression);
1142#endif
1143F2FS_FEATURE_RO_ATTR(pin_file);
1144
1145#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
1146static struct attribute *f2fs_attrs[] = {
1147 ATTR_LIST(gc_urgent_sleep_time),
1148 ATTR_LIST(gc_min_sleep_time),
1149 ATTR_LIST(gc_max_sleep_time),
1150 ATTR_LIST(gc_no_gc_sleep_time),
1151 ATTR_LIST(gc_no_zoned_gc_percent),
1152 ATTR_LIST(gc_boost_zoned_gc_percent),
1153 ATTR_LIST(gc_valid_thresh_ratio),
1154 ATTR_LIST(gc_idle),
1155 ATTR_LIST(gc_urgent),
1156 ATTR_LIST(reclaim_segments),
1157 ATTR_LIST(main_blkaddr),
1158 ATTR_LIST(max_small_discards),
1159 ATTR_LIST(max_discard_request),
1160 ATTR_LIST(min_discard_issue_time),
1161 ATTR_LIST(mid_discard_issue_time),
1162 ATTR_LIST(max_discard_issue_time),
1163 ATTR_LIST(discard_io_aware_gran),
1164 ATTR_LIST(discard_urgent_util),
1165 ATTR_LIST(discard_granularity),
1166 ATTR_LIST(max_ordered_discard),
1167 ATTR_LIST(discard_io_aware),
1168 ATTR_LIST(pending_discard),
1169 ATTR_LIST(gc_mode),
1170 ATTR_LIST(ipu_policy),
1171 ATTR_LIST(min_ipu_util),
1172 ATTR_LIST(min_fsync_blocks),
1173 ATTR_LIST(min_seq_blocks),
1174 ATTR_LIST(min_hot_blocks),
1175 ATTR_LIST(min_ssr_sections),
1176 ATTR_LIST(reserved_segments),
1177 ATTR_LIST(max_victim_search),
1178 ATTR_LIST(migration_granularity),
1179 ATTR_LIST(migration_window_granularity),
1180 ATTR_LIST(dir_level),
1181 ATTR_LIST(ram_thresh),
1182 ATTR_LIST(ra_nid_pages),
1183 ATTR_LIST(dirty_nats_ratio),
1184 ATTR_LIST(max_roll_forward_node_blocks),
1185 ATTR_LIST(cp_interval),
1186 ATTR_LIST(idle_interval),
1187 ATTR_LIST(discard_idle_interval),
1188 ATTR_LIST(gc_idle_interval),
1189 ATTR_LIST(umount_discard_timeout),
1190#ifdef CONFIG_F2FS_IOSTAT
1191 ATTR_LIST(iostat_enable),
1192 ATTR_LIST(iostat_period_ms),
1193#endif
1194 ATTR_LIST(readdir_ra),
1195 ATTR_LIST(max_io_bytes),
1196 ATTR_LIST(gc_pin_file_thresh),
1197 ATTR_LIST(extension_list),
1198#ifdef CONFIG_F2FS_FAULT_INJECTION
1199 ATTR_LIST(inject_rate),
1200 ATTR_LIST(inject_type),
1201#endif
1202 ATTR_LIST(data_io_flag),
1203 ATTR_LIST(node_io_flag),
1204 ATTR_LIST(gc_remaining_trials),
1205 ATTR_LIST(ckpt_thread_ioprio),
1206 ATTR_LIST(dirty_segments),
1207 ATTR_LIST(free_segments),
1208 ATTR_LIST(ovp_segments),
1209 ATTR_LIST(unusable),
1210 ATTR_LIST(lifetime_write_kbytes),
1211 ATTR_LIST(features),
1212 ATTR_LIST(reserved_blocks),
1213 ATTR_LIST(current_reserved_blocks),
1214 ATTR_LIST(encoding),
1215 ATTR_LIST(mounted_time_sec),
1216#ifdef CONFIG_F2FS_STAT_FS
1217 ATTR_LIST(cp_foreground_calls),
1218 ATTR_LIST(cp_background_calls),
1219 ATTR_LIST(gc_foreground_calls),
1220 ATTR_LIST(gc_background_calls),
1221 ATTR_LIST(moved_blocks_foreground),
1222 ATTR_LIST(moved_blocks_background),
1223 ATTR_LIST(avg_vblocks),
1224#endif
1225#ifdef CONFIG_BLK_DEV_ZONED
1226 ATTR_LIST(unusable_blocks_per_sec),
1227 ATTR_LIST(blkzone_alloc_policy),
1228#endif
1229#ifdef CONFIG_F2FS_FS_COMPRESSION
1230 ATTR_LIST(compr_written_block),
1231 ATTR_LIST(compr_saved_block),
1232 ATTR_LIST(compr_new_inode),
1233 ATTR_LIST(compress_percent),
1234 ATTR_LIST(compress_watermark),
1235#endif
1236 /* For ATGC */
1237 ATTR_LIST(atgc_candidate_ratio),
1238 ATTR_LIST(atgc_candidate_count),
1239 ATTR_LIST(atgc_age_weight),
1240 ATTR_LIST(atgc_age_threshold),
1241 ATTR_LIST(atgc_enabled),
1242 ATTR_LIST(seq_file_ra_mul),
1243 ATTR_LIST(gc_segment_mode),
1244 ATTR_LIST(gc_reclaimed_segments),
1245 ATTR_LIST(max_fragment_chunk),
1246 ATTR_LIST(max_fragment_hole),
1247 ATTR_LIST(current_atomic_write),
1248 ATTR_LIST(peak_atomic_write),
1249 ATTR_LIST(committed_atomic_block),
1250 ATTR_LIST(revoked_atomic_block),
1251 ATTR_LIST(hot_data_age_threshold),
1252 ATTR_LIST(warm_data_age_threshold),
1253 ATTR_LIST(last_age_weight),
1254 ATTR_LIST(max_read_extent_count),
1255 NULL,
1256};
1257ATTRIBUTE_GROUPS(f2fs);
1258
1259static struct attribute *f2fs_feat_attrs[] = {
1260#ifdef CONFIG_FS_ENCRYPTION
1261 ATTR_LIST(encryption),
1262 ATTR_LIST(test_dummy_encryption_v2),
1263#if IS_ENABLED(CONFIG_UNICODE)
1264 ATTR_LIST(encrypted_casefold),
1265#endif
1266#endif /* CONFIG_FS_ENCRYPTION */
1267#ifdef CONFIG_BLK_DEV_ZONED
1268 ATTR_LIST(block_zoned),
1269#endif
1270 ATTR_LIST(atomic_write),
1271 ATTR_LIST(extra_attr),
1272 ATTR_LIST(project_quota),
1273 ATTR_LIST(inode_checksum),
1274 ATTR_LIST(flexible_inline_xattr),
1275 ATTR_LIST(quota_ino),
1276 ATTR_LIST(inode_crtime),
1277 ATTR_LIST(lost_found),
1278#ifdef CONFIG_FS_VERITY
1279 ATTR_LIST(verity),
1280#endif
1281 ATTR_LIST(sb_checksum),
1282#if IS_ENABLED(CONFIG_UNICODE)
1283 ATTR_LIST(casefold),
1284#endif
1285 ATTR_LIST(readonly),
1286#ifdef CONFIG_F2FS_FS_COMPRESSION
1287 ATTR_LIST(compression),
1288#endif
1289 ATTR_LIST(pin_file),
1290 NULL,
1291};
1292ATTRIBUTE_GROUPS(f2fs_feat);
1293
1294F2FS_GENERAL_RO_ATTR(sb_status);
1295F2FS_GENERAL_RO_ATTR(cp_status);
1296F2FS_GENERAL_RO_ATTR(issued_discard);
1297F2FS_GENERAL_RO_ATTR(queued_discard);
1298F2FS_GENERAL_RO_ATTR(undiscard_blks);
1299
1300static struct attribute *f2fs_stat_attrs[] = {
1301 ATTR_LIST(sb_status),
1302 ATTR_LIST(cp_status),
1303 ATTR_LIST(issued_discard),
1304 ATTR_LIST(queued_discard),
1305 ATTR_LIST(undiscard_blks),
1306 NULL,
1307};
1308ATTRIBUTE_GROUPS(f2fs_stat);
1309
1310F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
1311F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
1312F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
1313F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
1314F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
1315F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
1316F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
1317F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
1318F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
1319F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
1320F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
1321F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
1322F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
1323F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
1324F2FS_SB_FEATURE_RO_ATTR(device_alias, DEVICE_ALIAS);
1325
1326static struct attribute *f2fs_sb_feat_attrs[] = {
1327 ATTR_LIST(sb_encryption),
1328 ATTR_LIST(sb_block_zoned),
1329 ATTR_LIST(sb_extra_attr),
1330 ATTR_LIST(sb_project_quota),
1331 ATTR_LIST(sb_inode_checksum),
1332 ATTR_LIST(sb_flexible_inline_xattr),
1333 ATTR_LIST(sb_quota_ino),
1334 ATTR_LIST(sb_inode_crtime),
1335 ATTR_LIST(sb_lost_found),
1336 ATTR_LIST(sb_verity),
1337 ATTR_LIST(sb_sb_checksum),
1338 ATTR_LIST(sb_casefold),
1339 ATTR_LIST(sb_compression),
1340 ATTR_LIST(sb_readonly),
1341 ATTR_LIST(sb_device_alias),
1342 NULL,
1343};
1344ATTRIBUTE_GROUPS(f2fs_sb_feat);
1345
1346static const struct sysfs_ops f2fs_attr_ops = {
1347 .show = f2fs_attr_show,
1348 .store = f2fs_attr_store,
1349};
1350
1351static const struct kobj_type f2fs_sb_ktype = {
1352 .default_groups = f2fs_groups,
1353 .sysfs_ops = &f2fs_attr_ops,
1354 .release = f2fs_sb_release,
1355};
1356
1357static const struct kobj_type f2fs_ktype = {
1358 .sysfs_ops = &f2fs_attr_ops,
1359};
1360
1361static struct kset f2fs_kset = {
1362 .kobj = {.ktype = &f2fs_ktype},
1363};
1364
1365static const struct kobj_type f2fs_feat_ktype = {
1366 .default_groups = f2fs_feat_groups,
1367 .sysfs_ops = &f2fs_attr_ops,
1368};
1369
1370static struct kobject f2fs_feat = {
1371 .kset = &f2fs_kset,
1372};
1373
1374static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
1375 struct attribute *attr, char *buf)
1376{
1377 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1378 s_stat_kobj);
1379 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1380
1381 return a->show ? a->show(a, sbi, buf) : 0;
1382}
1383
1384static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
1385 const char *buf, size_t len)
1386{
1387 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1388 s_stat_kobj);
1389 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1390
1391 return a->store ? a->store(a, sbi, buf, len) : 0;
1392}
1393
1394static void f2fs_stat_kobj_release(struct kobject *kobj)
1395{
1396 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1397 s_stat_kobj);
1398 complete(&sbi->s_stat_kobj_unregister);
1399}
1400
1401static const struct sysfs_ops f2fs_stat_attr_ops = {
1402 .show = f2fs_stat_attr_show,
1403 .store = f2fs_stat_attr_store,
1404};
1405
1406static const struct kobj_type f2fs_stat_ktype = {
1407 .default_groups = f2fs_stat_groups,
1408 .sysfs_ops = &f2fs_stat_attr_ops,
1409 .release = f2fs_stat_kobj_release,
1410};
1411
1412static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj,
1413 struct attribute *attr, char *buf)
1414{
1415 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1416 s_feature_list_kobj);
1417 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1418
1419 return a->show ? a->show(a, sbi, buf) : 0;
1420}
1421
1422static void f2fs_feature_list_kobj_release(struct kobject *kobj)
1423{
1424 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1425 s_feature_list_kobj);
1426 complete(&sbi->s_feature_list_kobj_unregister);
1427}
1428
1429static const struct sysfs_ops f2fs_feature_list_attr_ops = {
1430 .show = f2fs_sb_feat_attr_show,
1431};
1432
1433static const struct kobj_type f2fs_feature_list_ktype = {
1434 .default_groups = f2fs_sb_feat_groups,
1435 .sysfs_ops = &f2fs_feature_list_attr_ops,
1436 .release = f2fs_feature_list_kobj_release,
1437};
1438
1439static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
1440 void *offset)
1441{
1442 struct super_block *sb = seq->private;
1443 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1444 unsigned int total_segs =
1445 le32_to_cpu(sbi->raw_super->segment_count_main);
1446 int i;
1447
1448 seq_puts(seq, "format: segment_type|valid_blocks\n"
1449 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1450
1451 for (i = 0; i < total_segs; i++) {
1452 struct seg_entry *se = get_seg_entry(sbi, i);
1453
1454 if ((i % 10) == 0)
1455 seq_printf(seq, "%-10d", i);
1456 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
1457 if ((i % 10) == 9 || i == (total_segs - 1))
1458 seq_putc(seq, '\n');
1459 else
1460 seq_putc(seq, ' ');
1461 }
1462
1463 return 0;
1464}
1465
1466static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
1467 void *offset)
1468{
1469 struct super_block *sb = seq->private;
1470 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1471 unsigned int total_segs =
1472 le32_to_cpu(sbi->raw_super->segment_count_main);
1473 int i, j;
1474
1475 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
1476 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1477
1478 for (i = 0; i < total_segs; i++) {
1479 struct seg_entry *se = get_seg_entry(sbi, i);
1480
1481 seq_printf(seq, "%-10d", i);
1482 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
1483 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
1484 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
1485 seq_putc(seq, '\n');
1486 }
1487 return 0;
1488}
1489
1490static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
1491 void *offset)
1492{
1493 struct super_block *sb = seq->private;
1494 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1495 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1496 int i;
1497
1498 seq_puts(seq, "format: victim_secmap bitmaps\n");
1499
1500 for (i = 0; i < MAIN_SECS(sbi); i++) {
1501 if ((i % 10) == 0)
1502 seq_printf(seq, "%-10d", i);
1503 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
1504 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
1505 seq_putc(seq, '\n');
1506 else
1507 seq_putc(seq, ' ');
1508 }
1509 return 0;
1510}
1511
1512static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
1513 void *offset)
1514{
1515 struct super_block *sb = seq->private;
1516 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1517 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1518 int i, count;
1519
1520 seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n");
1521 if (!f2fs_realtime_discard_enable(sbi))
1522 return 0;
1523
1524 if (dcc) {
1525 mutex_lock(&dcc->cmd_lock);
1526 for (i = 0; i < MAX_PLIST_NUM; i++) {
1527 struct list_head *pend_list;
1528 struct discard_cmd *dc, *tmp;
1529
1530 if (i % 8 == 0)
1531 seq_printf(seq, " %-3d", i);
1532 count = 0;
1533 pend_list = &dcc->pend_list[i];
1534 list_for_each_entry_safe(dc, tmp, pend_list, list)
1535 count++;
1536 if (count)
1537 seq_printf(seq, " %7d", count);
1538 else
1539 seq_puts(seq, " .");
1540 if (i % 8 == 7)
1541 seq_putc(seq, '\n');
1542 }
1543 seq_putc(seq, '\n');
1544 mutex_unlock(&dcc->cmd_lock);
1545 }
1546
1547 return 0;
1548}
1549
1550static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
1551 void *offset)
1552{
1553 struct super_block *sb = seq->private;
1554 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1555 int i;
1556
1557 seq_printf(seq, "Address Layout : %5luB Block address (# of Segments)\n",
1558 F2FS_BLKSIZE);
1559 seq_printf(seq, " SB : %12s\n", "0/1024B");
1560 seq_printf(seq, " seg0_blkaddr : 0x%010x\n", SEG0_BLKADDR(sbi));
1561 seq_printf(seq, " Checkpoint : 0x%010x (%10d)\n",
1562 le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2);
1563 seq_printf(seq, " SIT : 0x%010x (%10d)\n",
1564 SIT_I(sbi)->sit_base_addr,
1565 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit));
1566 seq_printf(seq, " NAT : 0x%010x (%10d)\n",
1567 NM_I(sbi)->nat_blkaddr,
1568 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat));
1569 seq_printf(seq, " SSA : 0x%010x (%10d)\n",
1570 SM_I(sbi)->ssa_blkaddr,
1571 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa));
1572 seq_printf(seq, " Main : 0x%010x (%10d)\n",
1573 SM_I(sbi)->main_blkaddr,
1574 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main));
1575 seq_printf(seq, " # of Sections : %12d\n",
1576 le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
1577 seq_printf(seq, " Segs/Sections : %12d\n",
1578 SEGS_PER_SEC(sbi));
1579 seq_printf(seq, " Section size : %12d MB\n",
1580 SEGS_PER_SEC(sbi) << 1);
1581
1582 if (!f2fs_is_multi_device(sbi))
1583 return 0;
1584
1585 seq_puts(seq, "\nDisk Map for multi devices:\n");
1586 for (i = 0; i < sbi->s_ndevs; i++)
1587 seq_printf(seq, "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n",
1588 i, bdev_is_zoned(FDEV(i).bdev),
1589 FDEV(i).start_blk, FDEV(i).end_blk,
1590 FDEV(i).path);
1591 return 0;
1592}
1593
1594int __init f2fs_init_sysfs(void)
1595{
1596 int ret;
1597
1598 kobject_set_name(&f2fs_kset.kobj, "f2fs");
1599 f2fs_kset.kobj.parent = fs_kobj;
1600 ret = kset_register(&f2fs_kset);
1601 if (ret)
1602 return ret;
1603
1604 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
1605 NULL, "features");
1606 if (ret)
1607 goto put_kobject;
1608
1609 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
1610 if (!f2fs_proc_root) {
1611 ret = -ENOMEM;
1612 goto put_kobject;
1613 }
1614
1615 return 0;
1616put_kobject:
1617 kobject_put(&f2fs_feat);
1618 kset_unregister(&f2fs_kset);
1619 return ret;
1620}
1621
1622void f2fs_exit_sysfs(void)
1623{
1624 kobject_put(&f2fs_feat);
1625 kset_unregister(&f2fs_kset);
1626 remove_proc_entry("fs/f2fs", NULL);
1627 f2fs_proc_root = NULL;
1628}
1629
1630int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
1631{
1632 struct super_block *sb = sbi->sb;
1633 int err;
1634
1635 sbi->s_kobj.kset = &f2fs_kset;
1636 init_completion(&sbi->s_kobj_unregister);
1637 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
1638 "%s", sb->s_id);
1639 if (err)
1640 goto put_sb_kobj;
1641
1642 sbi->s_stat_kobj.kset = &f2fs_kset;
1643 init_completion(&sbi->s_stat_kobj_unregister);
1644 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
1645 &sbi->s_kobj, "stat");
1646 if (err)
1647 goto put_stat_kobj;
1648
1649 sbi->s_feature_list_kobj.kset = &f2fs_kset;
1650 init_completion(&sbi->s_feature_list_kobj_unregister);
1651 err = kobject_init_and_add(&sbi->s_feature_list_kobj,
1652 &f2fs_feature_list_ktype,
1653 &sbi->s_kobj, "feature_list");
1654 if (err)
1655 goto put_feature_list_kobj;
1656
1657 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
1658 if (!sbi->s_proc) {
1659 err = -ENOMEM;
1660 goto put_feature_list_kobj;
1661 }
1662
1663 proc_create_single_data("segment_info", 0444, sbi->s_proc,
1664 segment_info_seq_show, sb);
1665 proc_create_single_data("segment_bits", 0444, sbi->s_proc,
1666 segment_bits_seq_show, sb);
1667#ifdef CONFIG_F2FS_IOSTAT
1668 proc_create_single_data("iostat_info", 0444, sbi->s_proc,
1669 iostat_info_seq_show, sb);
1670#endif
1671 proc_create_single_data("victim_bits", 0444, sbi->s_proc,
1672 victim_bits_seq_show, sb);
1673 proc_create_single_data("discard_plist_info", 0444, sbi->s_proc,
1674 discard_plist_seq_show, sb);
1675 proc_create_single_data("disk_map", 0444, sbi->s_proc,
1676 disk_map_seq_show, sb);
1677 return 0;
1678put_feature_list_kobj:
1679 kobject_put(&sbi->s_feature_list_kobj);
1680 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1681put_stat_kobj:
1682 kobject_put(&sbi->s_stat_kobj);
1683 wait_for_completion(&sbi->s_stat_kobj_unregister);
1684put_sb_kobj:
1685 kobject_put(&sbi->s_kobj);
1686 wait_for_completion(&sbi->s_kobj_unregister);
1687 return err;
1688}
1689
1690void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
1691{
1692 remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root);
1693
1694 kobject_put(&sbi->s_stat_kobj);
1695 wait_for_completion(&sbi->s_stat_kobj_unregister);
1696 kobject_put(&sbi->s_feature_list_kobj);
1697 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1698
1699 kobject_put(&sbi->s_kobj);
1700 wait_for_completion(&sbi->s_kobj_unregister);
1701}