Merge tag 'f2fs-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk...
[muen/linux.git] / fs / f2fs / sysfs.c
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
14 #include "f2fs.h"
15 #include "segment.h"
16 #include "gc.h"
17
18 static struct proc_dir_entry *f2fs_proc_root;
19
20 /* Sysfs support for f2fs */
21 enum {
22         GC_THREAD,      /* struct f2fs_gc_thread */
23         SM_INFO,        /* struct f2fs_sm_info */
24         DCC_INFO,       /* struct discard_cmd_control */
25         NM_INFO,        /* struct f2fs_nm_info */
26         F2FS_SBI,       /* struct f2fs_sb_info */
27 #ifdef CONFIG_F2FS_FAULT_INJECTION
28         FAULT_INFO_RATE,        /* struct f2fs_fault_info */
29         FAULT_INFO_TYPE,        /* struct f2fs_fault_info */
30 #endif
31         RESERVED_BLOCKS,        /* struct f2fs_sb_info */
32 };
33
34 struct f2fs_attr {
35         struct attribute attr;
36         ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
37         ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
38                          const char *, size_t);
39         int struct_type;
40         int offset;
41         int id;
42 };
43
44 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
45 {
46         if (struct_type == GC_THREAD)
47                 return (unsigned char *)sbi->gc_thread;
48         else if (struct_type == SM_INFO)
49                 return (unsigned char *)SM_I(sbi);
50         else if (struct_type == DCC_INFO)
51                 return (unsigned char *)SM_I(sbi)->dcc_info;
52         else if (struct_type == NM_INFO)
53                 return (unsigned char *)NM_I(sbi);
54         else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
55                 return (unsigned char *)sbi;
56 #ifdef CONFIG_F2FS_FAULT_INJECTION
57         else if (struct_type == FAULT_INFO_RATE ||
58                                         struct_type == FAULT_INFO_TYPE)
59                 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
60 #endif
61         return NULL;
62 }
63
64 static ssize_t dirty_segments_show(struct f2fs_attr *a,
65                 struct f2fs_sb_info *sbi, char *buf)
66 {
67         return snprintf(buf, PAGE_SIZE, "%llu\n",
68                 (unsigned long long)(dirty_segments(sbi)));
69 }
70
71 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
72                 struct f2fs_sb_info *sbi, char *buf)
73 {
74         struct super_block *sb = sbi->sb;
75
76         if (!sb->s_bdev->bd_part)
77                 return snprintf(buf, PAGE_SIZE, "0\n");
78
79         return snprintf(buf, PAGE_SIZE, "%llu\n",
80                 (unsigned long long)(sbi->kbytes_written +
81                         BD_PART_WRITTEN(sbi)));
82 }
83
84 static ssize_t features_show(struct f2fs_attr *a,
85                 struct f2fs_sb_info *sbi, char *buf)
86 {
87         struct super_block *sb = sbi->sb;
88         int len = 0;
89
90         if (!sb->s_bdev->bd_part)
91                 return snprintf(buf, PAGE_SIZE, "0\n");
92
93         if (f2fs_sb_has_encrypt(sbi))
94                 len += snprintf(buf, PAGE_SIZE - len, "%s",
95                                                 "encryption");
96         if (f2fs_sb_has_blkzoned(sbi))
97                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
98                                 len ? ", " : "", "blkzoned");
99         if (f2fs_sb_has_extra_attr(sbi))
100                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
101                                 len ? ", " : "", "extra_attr");
102         if (f2fs_sb_has_project_quota(sbi))
103                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
104                                 len ? ", " : "", "projquota");
105         if (f2fs_sb_has_inode_chksum(sbi))
106                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
107                                 len ? ", " : "", "inode_checksum");
108         if (f2fs_sb_has_flexible_inline_xattr(sbi))
109                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
110                                 len ? ", " : "", "flexible_inline_xattr");
111         if (f2fs_sb_has_quota_ino(sbi))
112                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
113                                 len ? ", " : "", "quota_ino");
114         if (f2fs_sb_has_inode_crtime(sbi))
115                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
116                                 len ? ", " : "", "inode_crtime");
117         if (f2fs_sb_has_lost_found(sbi))
118                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
119                                 len ? ", " : "", "lost_found");
120         if (f2fs_sb_has_sb_chksum(sbi))
121                 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
122                                 len ? ", " : "", "sb_checksum");
123         len += snprintf(buf + len, PAGE_SIZE - len, "\n");
124         return len;
125 }
126
127 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
128                                         struct f2fs_sb_info *sbi, char *buf)
129 {
130         return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks);
131 }
132
133 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
134                         struct f2fs_sb_info *sbi, char *buf)
135 {
136         unsigned char *ptr = NULL;
137         unsigned int *ui;
138
139         ptr = __struct_ptr(sbi, a->struct_type);
140         if (!ptr)
141                 return -EINVAL;
142
143         if (!strcmp(a->attr.name, "extension_list")) {
144                 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
145                                         sbi->raw_super->extension_list;
146                 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
147                 int hot_count = sbi->raw_super->hot_ext_count;
148                 int len = 0, i;
149
150                 len += snprintf(buf + len, PAGE_SIZE - len,
151                                                 "cold file extension:\n");
152                 for (i = 0; i < cold_count; i++)
153                         len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
154                                                                 extlist[i]);
155
156                 len += snprintf(buf + len, PAGE_SIZE - len,
157                                                 "hot file extension:\n");
158                 for (i = cold_count; i < cold_count + hot_count; i++)
159                         len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
160                                                                 extlist[i]);
161                 return len;
162         }
163
164         ui = (unsigned int *)(ptr + a->offset);
165
166         return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
167 }
168
169 static ssize_t __sbi_store(struct f2fs_attr *a,
170                         struct f2fs_sb_info *sbi,
171                         const char *buf, size_t count)
172 {
173         unsigned char *ptr;
174         unsigned long t;
175         unsigned int *ui;
176         ssize_t ret;
177
178         ptr = __struct_ptr(sbi, a->struct_type);
179         if (!ptr)
180                 return -EINVAL;
181
182         if (!strcmp(a->attr.name, "extension_list")) {
183                 const char *name = strim((char *)buf);
184                 bool set = true, hot;
185
186                 if (!strncmp(name, "[h]", 3))
187                         hot = true;
188                 else if (!strncmp(name, "[c]", 3))
189                         hot = false;
190                 else
191                         return -EINVAL;
192
193                 name += 3;
194
195                 if (*name == '!') {
196                         name++;
197                         set = false;
198                 }
199
200                 if (strlen(name) >= F2FS_EXTENSION_LEN)
201                         return -EINVAL;
202
203                 down_write(&sbi->sb_lock);
204
205                 ret = f2fs_update_extension_list(sbi, name, hot, set);
206                 if (ret)
207                         goto out;
208
209                 ret = f2fs_commit_super(sbi, false);
210                 if (ret)
211                         f2fs_update_extension_list(sbi, name, hot, !set);
212 out:
213                 up_write(&sbi->sb_lock);
214                 return ret ? ret : count;
215         }
216
217         ui = (unsigned int *)(ptr + a->offset);
218
219         ret = kstrtoul(skip_spaces(buf), 0, &t);
220         if (ret < 0)
221                 return ret;
222 #ifdef CONFIG_F2FS_FAULT_INJECTION
223         if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
224                 return -EINVAL;
225         if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
226                 return -EINVAL;
227 #endif
228         if (a->struct_type == RESERVED_BLOCKS) {
229                 spin_lock(&sbi->stat_lock);
230                 if (t > (unsigned long)(sbi->user_block_count -
231                                 F2FS_OPTION(sbi).root_reserved_blocks)) {
232                         spin_unlock(&sbi->stat_lock);
233                         return -EINVAL;
234                 }
235                 *ui = t;
236                 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
237                                 sbi->user_block_count - valid_user_blocks(sbi));
238                 spin_unlock(&sbi->stat_lock);
239                 return count;
240         }
241
242         if (!strcmp(a->attr.name, "discard_granularity")) {
243                 if (t == 0 || t > MAX_PLIST_NUM)
244                         return -EINVAL;
245                 if (t == *ui)
246                         return count;
247                 *ui = t;
248                 return count;
249         }
250
251         if (!strcmp(a->attr.name, "migration_granularity")) {
252                 if (t == 0 || t > sbi->segs_per_sec)
253                         return -EINVAL;
254         }
255
256         if (!strcmp(a->attr.name, "trim_sections"))
257                 return -EINVAL;
258
259         if (!strcmp(a->attr.name, "gc_urgent")) {
260                 if (t >= 1) {
261                         sbi->gc_mode = GC_URGENT;
262                         if (sbi->gc_thread) {
263                                 sbi->gc_thread->gc_wake = 1;
264                                 wake_up_interruptible_all(
265                                         &sbi->gc_thread->gc_wait_queue_head);
266                                 wake_up_discard_thread(sbi, true);
267                         }
268                 } else {
269                         sbi->gc_mode = GC_NORMAL;
270                 }
271                 return count;
272         }
273         if (!strcmp(a->attr.name, "gc_idle")) {
274                 if (t == GC_IDLE_CB)
275                         sbi->gc_mode = GC_IDLE_CB;
276                 else if (t == GC_IDLE_GREEDY)
277                         sbi->gc_mode = GC_IDLE_GREEDY;
278                 else
279                         sbi->gc_mode = GC_NORMAL;
280                 return count;
281         }
282
283
284         if (!strcmp(a->attr.name, "iostat_enable")) {
285                 sbi->iostat_enable = !!t;
286                 if (!sbi->iostat_enable)
287                         f2fs_reset_iostat(sbi);
288                 return count;
289         }
290
291         *ui = (unsigned int)t;
292
293         return count;
294 }
295
296 static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
297                         struct f2fs_sb_info *sbi,
298                         const char *buf, size_t count)
299 {
300         ssize_t ret;
301         bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
302                                         a->struct_type == GC_THREAD);
303
304         if (gc_entry) {
305                 if (!down_read_trylock(&sbi->sb->s_umount))
306                         return -EAGAIN;
307         }
308         ret = __sbi_store(a, sbi, buf, count);
309         if (gc_entry)
310                 up_read(&sbi->sb->s_umount);
311
312         return ret;
313 }
314
315 static ssize_t f2fs_attr_show(struct kobject *kobj,
316                                 struct attribute *attr, char *buf)
317 {
318         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
319                                                                 s_kobj);
320         struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
321
322         return a->show ? a->show(a, sbi, buf) : 0;
323 }
324
325 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
326                                                 const char *buf, size_t len)
327 {
328         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
329                                                                         s_kobj);
330         struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
331
332         return a->store ? a->store(a, sbi, buf, len) : 0;
333 }
334
335 static void f2fs_sb_release(struct kobject *kobj)
336 {
337         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
338                                                                 s_kobj);
339         complete(&sbi->s_kobj_unregister);
340 }
341
342 enum feat_id {
343         FEAT_CRYPTO = 0,
344         FEAT_BLKZONED,
345         FEAT_ATOMIC_WRITE,
346         FEAT_EXTRA_ATTR,
347         FEAT_PROJECT_QUOTA,
348         FEAT_INODE_CHECKSUM,
349         FEAT_FLEXIBLE_INLINE_XATTR,
350         FEAT_QUOTA_INO,
351         FEAT_INODE_CRTIME,
352         FEAT_LOST_FOUND,
353         FEAT_SB_CHECKSUM,
354 };
355
356 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
357                 struct f2fs_sb_info *sbi, char *buf)
358 {
359         switch (a->id) {
360         case FEAT_CRYPTO:
361         case FEAT_BLKZONED:
362         case FEAT_ATOMIC_WRITE:
363         case FEAT_EXTRA_ATTR:
364         case FEAT_PROJECT_QUOTA:
365         case FEAT_INODE_CHECKSUM:
366         case FEAT_FLEXIBLE_INLINE_XATTR:
367         case FEAT_QUOTA_INO:
368         case FEAT_INODE_CRTIME:
369         case FEAT_LOST_FOUND:
370         case FEAT_SB_CHECKSUM:
371                 return snprintf(buf, PAGE_SIZE, "supported\n");
372         }
373         return 0;
374 }
375
376 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
377 static struct f2fs_attr f2fs_attr_##_name = {                   \
378         .attr = {.name = __stringify(_name), .mode = _mode },   \
379         .show   = _show,                                        \
380         .store  = _store,                                       \
381         .struct_type = _struct_type,                            \
382         .offset = _offset                                       \
383 }
384
385 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname)    \
386         F2FS_ATTR_OFFSET(struct_type, name, 0644,               \
387                 f2fs_sbi_show, f2fs_sbi_store,                  \
388                 offsetof(struct struct_name, elname))
389
390 #define F2FS_GENERAL_RO_ATTR(name) \
391 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
392
393 #define F2FS_FEATURE_RO_ATTR(_name, _id)                        \
394 static struct f2fs_attr f2fs_attr_##_name = {                   \
395         .attr = {.name = __stringify(_name), .mode = 0444 },    \
396         .show   = f2fs_feature_show,                            \
397         .id     = _id,                                          \
398 }
399
400 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
401                                                         urgent_sleep_time);
402 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
403 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
404 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
405 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
406 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
407 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
408 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
409 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
410 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
411 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
412 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
413 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
414 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
415 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks);
416 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
417 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
418 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
419 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
420 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
421 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
422 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity);
423 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
424 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
425 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
426 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval,
427                                         interval_time[DISCARD_TIME]);
428 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]);
429 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info,
430                 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
431 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
432 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
433 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
434 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
435 #ifdef CONFIG_F2FS_FAULT_INJECTION
436 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
437 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
438 #endif
439 F2FS_GENERAL_RO_ATTR(dirty_segments);
440 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
441 F2FS_GENERAL_RO_ATTR(features);
442 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
443
444 #ifdef CONFIG_FS_ENCRYPTION
445 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
446 #endif
447 #ifdef CONFIG_BLK_DEV_ZONED
448 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
449 #endif
450 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
451 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
452 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
453 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
454 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
455 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
456 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
457 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
458 F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
459
460 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
461 static struct attribute *f2fs_attrs[] = {
462         ATTR_LIST(gc_urgent_sleep_time),
463         ATTR_LIST(gc_min_sleep_time),
464         ATTR_LIST(gc_max_sleep_time),
465         ATTR_LIST(gc_no_gc_sleep_time),
466         ATTR_LIST(gc_idle),
467         ATTR_LIST(gc_urgent),
468         ATTR_LIST(reclaim_segments),
469         ATTR_LIST(max_small_discards),
470         ATTR_LIST(discard_granularity),
471         ATTR_LIST(batched_trim_sections),
472         ATTR_LIST(ipu_policy),
473         ATTR_LIST(min_ipu_util),
474         ATTR_LIST(min_fsync_blocks),
475         ATTR_LIST(min_seq_blocks),
476         ATTR_LIST(min_hot_blocks),
477         ATTR_LIST(min_ssr_sections),
478         ATTR_LIST(max_victim_search),
479         ATTR_LIST(migration_granularity),
480         ATTR_LIST(dir_level),
481         ATTR_LIST(ram_thresh),
482         ATTR_LIST(ra_nid_pages),
483         ATTR_LIST(dirty_nats_ratio),
484         ATTR_LIST(cp_interval),
485         ATTR_LIST(idle_interval),
486         ATTR_LIST(discard_idle_interval),
487         ATTR_LIST(gc_idle_interval),
488         ATTR_LIST(umount_discard_timeout),
489         ATTR_LIST(iostat_enable),
490         ATTR_LIST(readdir_ra),
491         ATTR_LIST(gc_pin_file_thresh),
492         ATTR_LIST(extension_list),
493 #ifdef CONFIG_F2FS_FAULT_INJECTION
494         ATTR_LIST(inject_rate),
495         ATTR_LIST(inject_type),
496 #endif
497         ATTR_LIST(dirty_segments),
498         ATTR_LIST(lifetime_write_kbytes),
499         ATTR_LIST(features),
500         ATTR_LIST(reserved_blocks),
501         ATTR_LIST(current_reserved_blocks),
502         NULL,
503 };
504
505 static struct attribute *f2fs_feat_attrs[] = {
506 #ifdef CONFIG_FS_ENCRYPTION
507         ATTR_LIST(encryption),
508 #endif
509 #ifdef CONFIG_BLK_DEV_ZONED
510         ATTR_LIST(block_zoned),
511 #endif
512         ATTR_LIST(atomic_write),
513         ATTR_LIST(extra_attr),
514         ATTR_LIST(project_quota),
515         ATTR_LIST(inode_checksum),
516         ATTR_LIST(flexible_inline_xattr),
517         ATTR_LIST(quota_ino),
518         ATTR_LIST(inode_crtime),
519         ATTR_LIST(lost_found),
520         ATTR_LIST(sb_checksum),
521         NULL,
522 };
523
524 static const struct sysfs_ops f2fs_attr_ops = {
525         .show   = f2fs_attr_show,
526         .store  = f2fs_attr_store,
527 };
528
529 static struct kobj_type f2fs_sb_ktype = {
530         .default_attrs  = f2fs_attrs,
531         .sysfs_ops      = &f2fs_attr_ops,
532         .release        = f2fs_sb_release,
533 };
534
535 static struct kobj_type f2fs_ktype = {
536         .sysfs_ops      = &f2fs_attr_ops,
537 };
538
539 static struct kset f2fs_kset = {
540         .kobj   = {.ktype = &f2fs_ktype},
541 };
542
543 static struct kobj_type f2fs_feat_ktype = {
544         .default_attrs  = f2fs_feat_attrs,
545         .sysfs_ops      = &f2fs_attr_ops,
546 };
547
548 static struct kobject f2fs_feat = {
549         .kset   = &f2fs_kset,
550 };
551
552 static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
553                                                 void *offset)
554 {
555         struct super_block *sb = seq->private;
556         struct f2fs_sb_info *sbi = F2FS_SB(sb);
557         unsigned int total_segs =
558                         le32_to_cpu(sbi->raw_super->segment_count_main);
559         int i;
560
561         seq_puts(seq, "format: segment_type|valid_blocks\n"
562                 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
563
564         for (i = 0; i < total_segs; i++) {
565                 struct seg_entry *se = get_seg_entry(sbi, i);
566
567                 if ((i % 10) == 0)
568                         seq_printf(seq, "%-10d", i);
569                 seq_printf(seq, "%d|%-3u", se->type,
570                                         get_valid_blocks(sbi, i, false));
571                 if ((i % 10) == 9 || i == (total_segs - 1))
572                         seq_putc(seq, '\n');
573                 else
574                         seq_putc(seq, ' ');
575         }
576
577         return 0;
578 }
579
580 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
581                                                 void *offset)
582 {
583         struct super_block *sb = seq->private;
584         struct f2fs_sb_info *sbi = F2FS_SB(sb);
585         unsigned int total_segs =
586                         le32_to_cpu(sbi->raw_super->segment_count_main);
587         int i, j;
588
589         seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
590                 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
591
592         for (i = 0; i < total_segs; i++) {
593                 struct seg_entry *se = get_seg_entry(sbi, i);
594
595                 seq_printf(seq, "%-10d", i);
596                 seq_printf(seq, "%d|%-3u|", se->type,
597                                         get_valid_blocks(sbi, i, false));
598                 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
599                         seq_printf(seq, " %.2x", se->cur_valid_map[j]);
600                 seq_putc(seq, '\n');
601         }
602         return 0;
603 }
604
605 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
606                                                void *offset)
607 {
608         struct super_block *sb = seq->private;
609         struct f2fs_sb_info *sbi = F2FS_SB(sb);
610         time64_t now = ktime_get_real_seconds();
611
612         if (!sbi->iostat_enable)
613                 return 0;
614
615         seq_printf(seq, "time:          %-16llu\n", now);
616
617         /* print app IOs */
618         seq_printf(seq, "app buffered:  %-16llu\n",
619                                 sbi->write_iostat[APP_BUFFERED_IO]);
620         seq_printf(seq, "app direct:    %-16llu\n",
621                                 sbi->write_iostat[APP_DIRECT_IO]);
622         seq_printf(seq, "app mapped:    %-16llu\n",
623                                 sbi->write_iostat[APP_MAPPED_IO]);
624
625         /* print fs IOs */
626         seq_printf(seq, "fs data:       %-16llu\n",
627                                 sbi->write_iostat[FS_DATA_IO]);
628         seq_printf(seq, "fs node:       %-16llu\n",
629                                 sbi->write_iostat[FS_NODE_IO]);
630         seq_printf(seq, "fs meta:       %-16llu\n",
631                                 sbi->write_iostat[FS_META_IO]);
632         seq_printf(seq, "fs gc data:    %-16llu\n",
633                                 sbi->write_iostat[FS_GC_DATA_IO]);
634         seq_printf(seq, "fs gc node:    %-16llu\n",
635                                 sbi->write_iostat[FS_GC_NODE_IO]);
636         seq_printf(seq, "fs cp data:    %-16llu\n",
637                                 sbi->write_iostat[FS_CP_DATA_IO]);
638         seq_printf(seq, "fs cp node:    %-16llu\n",
639                                 sbi->write_iostat[FS_CP_NODE_IO]);
640         seq_printf(seq, "fs cp meta:    %-16llu\n",
641                                 sbi->write_iostat[FS_CP_META_IO]);
642         seq_printf(seq, "fs discard:    %-16llu\n",
643                                 sbi->write_iostat[FS_DISCARD]);
644
645         return 0;
646 }
647
648 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
649                                                 void *offset)
650 {
651         struct super_block *sb = seq->private;
652         struct f2fs_sb_info *sbi = F2FS_SB(sb);
653         struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
654         int i;
655
656         seq_puts(seq, "format: victim_secmap bitmaps\n");
657
658         for (i = 0; i < MAIN_SECS(sbi); i++) {
659                 if ((i % 10) == 0)
660                         seq_printf(seq, "%-10d", i);
661                 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
662                 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
663                         seq_putc(seq, '\n');
664                 else
665                         seq_putc(seq, ' ');
666         }
667         return 0;
668 }
669
670 int __init f2fs_init_sysfs(void)
671 {
672         int ret;
673
674         kobject_set_name(&f2fs_kset.kobj, "f2fs");
675         f2fs_kset.kobj.parent = fs_kobj;
676         ret = kset_register(&f2fs_kset);
677         if (ret)
678                 return ret;
679
680         ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
681                                    NULL, "features");
682         if (ret)
683                 kset_unregister(&f2fs_kset);
684         else
685                 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
686         return ret;
687 }
688
689 void f2fs_exit_sysfs(void)
690 {
691         kobject_put(&f2fs_feat);
692         kset_unregister(&f2fs_kset);
693         remove_proc_entry("fs/f2fs", NULL);
694         f2fs_proc_root = NULL;
695 }
696
697 int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
698 {
699         struct super_block *sb = sbi->sb;
700         int err;
701
702         sbi->s_kobj.kset = &f2fs_kset;
703         init_completion(&sbi->s_kobj_unregister);
704         err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
705                                 "%s", sb->s_id);
706         if (err)
707                 return err;
708
709         if (f2fs_proc_root)
710                 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
711
712         if (sbi->s_proc) {
713                 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc,
714                                 segment_info_seq_show, sb);
715                 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc,
716                                 segment_bits_seq_show, sb);
717                 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc,
718                                 iostat_info_seq_show, sb);
719                 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc,
720                                 victim_bits_seq_show, sb);
721         }
722         return 0;
723 }
724
725 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
726 {
727         if (sbi->s_proc) {
728                 remove_proc_entry("iostat_info", sbi->s_proc);
729                 remove_proc_entry("segment_info", sbi->s_proc);
730                 remove_proc_entry("segment_bits", sbi->s_proc);
731                 remove_proc_entry("victim_bits", sbi->s_proc);
732                 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
733         }
734         kobject_del(&sbi->s_kobj);
735 }