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