?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
console: Replace #if 0 with atomic var 'ignore_console_lock_warning'
[linux/fpc-iii.git] / fs / f2fs / sysfs.c
blob2e7e611deaef2df1f61cc7145138db9c7a08dba5
1 /*
2 * f2fs sysfs interface
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 * Copyright (c) 2017 Chao Yu <chao@kernel.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12 #include <linux/proc_fs.h>
13 #include <linux/f2fs_fs.h>
14 #include <linux/seq_file.h>
15
16 #include "f2fs.h"
17 #include "segment.h"
18 #include "gc.h"
19
20 static struct proc_dir_entry *f2fs_proc_root;
21
22 /* Sysfs support for f2fs */
23 enum {
24 GC_THREAD, /* struct f2fs_gc_thread */
25 SM_INFO, /* struct f2fs_sm_info */
26 DCC_INFO, /* struct discard_cmd_control */
27 NM_INFO, /* struct f2fs_nm_info */
28 F2FS_SBI, /* struct f2fs_sb_info */
29 #ifdef CONFIG_F2FS_FAULT_INJECTION
30 FAULT_INFO_RATE, /* struct f2fs_fault_info */
31 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
32 #endif
33 RESERVED_BLOCKS, /* struct f2fs_sb_info */
34 };
35
36 struct f2fs_attr {
37 struct attribute attr;
38 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
39 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
40 const char *, size_t);
41 int struct_type;
42 int offset;
43 int id;
44 };
45
46 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
47 {
48 if (struct_type == GC_THREAD)
49 return (unsigned char *)sbi->gc_thread;
50 else if (struct_type == SM_INFO)
51 return (unsigned char *)SM_I(sbi);
52 else if (struct_type == DCC_INFO)
53 return (unsigned char *)SM_I(sbi)->dcc_info;
54 else if (struct_type == NM_INFO)
55 return (unsigned char *)NM_I(sbi);
56 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
57 return (unsigned char *)sbi;
58 #ifdef CONFIG_F2FS_FAULT_INJECTION
59 else if (struct_type == FAULT_INFO_RATE ||
60 struct_type == FAULT_INFO_TYPE)
61 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
62 #endif
63 return NULL;
64 }
65
66 static ssize_t dirty_segments_show(struct f2fs_attr *a,
67 struct f2fs_sb_info *sbi, char *buf)
68 {
69 return snprintf(buf, PAGE_SIZE, "%llu\n",
70 (unsigned long long)(dirty_segments(sbi)));
71 }
72
73 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
74 struct f2fs_sb_info *sbi, char *buf)
75 {
76 struct super_block *sb = sbi->sb;
77
78 if (!sb->s_bdev->bd_part)
79 return snprintf(buf, PAGE_SIZE, "0\n");
80
81 return snprintf(buf, PAGE_SIZE, "%llu\n",
82 (unsigned long long)(sbi->kbytes_written +
83 BD_PART_WRITTEN(sbi)));
84 }
85
86 static ssize_t features_show(struct f2fs_attr *a,
87 struct f2fs_sb_info *sbi, char *buf)
88 {
89 struct super_block *sb = sbi->sb;
90 int len = 0;
91
92 if (!sb->s_bdev->bd_part)
93 return snprintf(buf, PAGE_SIZE, "0\n");
94
95 if (f2fs_sb_has_encrypt(sb))
96 len += snprintf(buf, PAGE_SIZE - len, "%s",
97 "encryption");
98 if (f2fs_sb_has_blkzoned(sb))
99 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
100 len ? ", " : "", "blkzoned");
101 if (f2fs_sb_has_extra_attr(sb))
102 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
103 len ? ", " : "", "extra_attr");
104 if (f2fs_sb_has_project_quota(sb))
105 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
106 len ? ", " : "", "projquota");
107 if (f2fs_sb_has_inode_chksum(sb))
108 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
109 len ? ", " : "", "inode_checksum");
110 if (f2fs_sb_has_flexible_inline_xattr(sb))
111 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
112 len ? ", " : "", "flexible_inline_xattr");
113 if (f2fs_sb_has_quota_ino(sb))
114 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
115 len ? ", " : "", "quota_ino");
116 if (f2fs_sb_has_inode_crtime(sb))
117 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
118 len ? ", " : "", "inode_crtime");
119 if (f2fs_sb_has_lost_found(sb))
120 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
121 len ? ", " : "", "lost_found");
122 len += snprintf(buf + len, PAGE_SIZE - len, "\n");
123 return len;
124 }
125
126 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
127 struct f2fs_sb_info *sbi, char *buf)
128 {
129 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks);
130 }
131
132 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
133 struct f2fs_sb_info *sbi, char *buf)
134 {
135 unsigned char *ptr = NULL;
136 unsigned int *ui;
137
138 ptr = __struct_ptr(sbi, a->struct_type);
139 if (!ptr)
140 return -EINVAL;
141
142 if (!strcmp(a->attr.name, "extension_list")) {
143 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
144 sbi->raw_super->extension_list;
145 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
146 int hot_count = sbi->raw_super->hot_ext_count;
147 int len = 0, i;
148
149 len += snprintf(buf + len, PAGE_SIZE - len,
150 "cold file extension:\n");
151 for (i = 0; i < cold_count; i++)
152 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
153 extlist[i]);
154
155 len += snprintf(buf + len, PAGE_SIZE - len,
156 "hot file extension:\n");
157 for (i = cold_count; i < cold_count + hot_count; i++)
158 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
159 extlist[i]);
160 return len;
161 }
162
163 ui = (unsigned int *)(ptr + a->offset);
164
165 return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
166 }
167
168 static ssize_t __sbi_store(struct f2fs_attr *a,
169 struct f2fs_sb_info *sbi,
170 const char *buf, size_t count)
171 {
172 unsigned char *ptr;
173 unsigned long t;
174 unsigned int *ui;
175 ssize_t ret;
176
177 ptr = __struct_ptr(sbi, a->struct_type);
178 if (!ptr)
179 return -EINVAL;
180
181 if (!strcmp(a->attr.name, "extension_list")) {
182 const char *name = strim((char *)buf);
183 bool set = true, hot;
184
185 if (!strncmp(name, "[h]", 3))
186 hot = true;
187 else if (!strncmp(name, "[c]", 3))
188 hot = false;
189 else
190 return -EINVAL;
191
192 name += 3;
193
194 if (*name == '!') {
195 name++;
196 set = false;
197 }
198
199 if (strlen(name) >= F2FS_EXTENSION_LEN)
200 return -EINVAL;
201
202 down_write(&sbi->sb_lock);
203
204 ret = f2fs_update_extension_list(sbi, name, hot, set);
205 if (ret)
206 goto out;
207
208 ret = f2fs_commit_super(sbi, false);
209 if (ret)
210 f2fs_update_extension_list(sbi, name, hot, !set);
211 out:
212 up_write(&sbi->sb_lock);
213 return ret ? ret : count;
214 }
215
216 ui = (unsigned int *)(ptr + a->offset);
217
218 ret = kstrtoul(skip_spaces(buf), 0, &t);
219 if (ret < 0)
220 return ret;
221 #ifdef CONFIG_F2FS_FAULT_INJECTION
222 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
223 return -EINVAL;
224 #endif
225 if (a->struct_type == RESERVED_BLOCKS) {
226 spin_lock(&sbi->stat_lock);
227 if (t > (unsigned long)(sbi->user_block_count -
228 F2FS_OPTION(sbi).root_reserved_blocks)) {
229 spin_unlock(&sbi->stat_lock);
230 return -EINVAL;
231 }
232 *ui = t;
233 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
234 sbi->user_block_count - valid_user_blocks(sbi));
235 spin_unlock(&sbi->stat_lock);
236 return count;
237 }
238
239 if (!strcmp(a->attr.name, "discard_granularity")) {
240 if (t == 0 || t > MAX_PLIST_NUM)
241 return -EINVAL;
242 if (t == *ui)
243 return count;
244 *ui = t;
245 return count;
246 }
247
248 if (!strcmp(a->attr.name, "trim_sections"))
249 return -EINVAL;
250
251 if (!strcmp(a->attr.name, "gc_urgent")) {
252 if (t >= 1) {
253 sbi->gc_mode = GC_URGENT;
254 if (sbi->gc_thread) {
255 wake_up_interruptible_all(
256 &sbi->gc_thread->gc_wait_queue_head);
257 wake_up_discard_thread(sbi, true);
258 }
259 } else {
260 sbi->gc_mode = GC_NORMAL;
261 }
262 return count;
263 }
264 if (!strcmp(a->attr.name, "gc_idle")) {
265 if (t == GC_IDLE_CB)
266 sbi->gc_mode = GC_IDLE_CB;
267 else if (t == GC_IDLE_GREEDY)
268 sbi->gc_mode = GC_IDLE_GREEDY;
269 else
270 sbi->gc_mode = GC_NORMAL;
271 return count;
272 }
273
274 *ui = t;
275
276 if (!strcmp(a->attr.name, "iostat_enable") && *ui == 0)
277 f2fs_reset_iostat(sbi);
278 return count;
279 }
280
281 static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
282 struct f2fs_sb_info *sbi,
283 const char *buf, size_t count)
284 {
285 ssize_t ret;
286 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
287 a->struct_type == GC_THREAD);
288
289 if (gc_entry)
290 down_read(&sbi->sb->s_umount);
291 ret = __sbi_store(a, sbi, buf, count);
292 if (gc_entry)
293 up_read(&sbi->sb->s_umount);
294
295 return ret;
296 }
297
298 static ssize_t f2fs_attr_show(struct kobject *kobj,
299 struct attribute *attr, char *buf)
300 {
301 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
302 s_kobj);
303 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
304
305 return a->show ? a->show(a, sbi, buf) : 0;
306 }
307
308 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
309 const char *buf, size_t len)
310 {
311 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
312 s_kobj);
313 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
314
315 return a->store ? a->store(a, sbi, buf, len) : 0;
316 }
317
318 static void f2fs_sb_release(struct kobject *kobj)
319 {
320 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
321 s_kobj);
322 complete(&sbi->s_kobj_unregister);
323 }
324
325 enum feat_id {
326 FEAT_CRYPTO = 0,
327 FEAT_BLKZONED,
328 FEAT_ATOMIC_WRITE,
329 FEAT_EXTRA_ATTR,
330 FEAT_PROJECT_QUOTA,
331 FEAT_INODE_CHECKSUM,
332 FEAT_FLEXIBLE_INLINE_XATTR,
333 FEAT_QUOTA_INO,
334 FEAT_INODE_CRTIME,
335 FEAT_LOST_FOUND,
336 };
337
338 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
339 struct f2fs_sb_info *sbi, char *buf)
340 {
341 switch (a->id) {
342 case FEAT_CRYPTO:
343 case FEAT_BLKZONED:
344 case FEAT_ATOMIC_WRITE:
345 case FEAT_EXTRA_ATTR:
346 case FEAT_PROJECT_QUOTA:
347 case FEAT_INODE_CHECKSUM:
348 case FEAT_FLEXIBLE_INLINE_XATTR:
349 case FEAT_QUOTA_INO:
350 case FEAT_INODE_CRTIME:
351 case FEAT_LOST_FOUND:
352 return snprintf(buf, PAGE_SIZE, "supported\n");
353 }
354 return 0;
355 }
356
357 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
358 static struct f2fs_attr f2fs_attr_##_name = { \
359 .attr = {.name = __stringify(_name), .mode = _mode }, \
360 .show = _show, \
361 .store = _store, \
362 .struct_type = _struct_type, \
363 .offset = _offset \
364 }
365
366 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
367 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
368 f2fs_sbi_show, f2fs_sbi_store, \
369 offsetof(struct struct_name, elname))
370
371 #define F2FS_GENERAL_RO_ATTR(name) \
372 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
373
374 #define F2FS_FEATURE_RO_ATTR(_name, _id) \
375 static struct f2fs_attr f2fs_attr_##_name = { \
376 .attr = {.name = __stringify(_name), .mode = 0444 }, \
377 .show = f2fs_feature_show, \
378 .id = _id, \
379 }
380
381 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
382 urgent_sleep_time);
383 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
384 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
385 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
386 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
387 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
388 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
389 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
390 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
391 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
392 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
393 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
394 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
395 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
396 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
397 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
398 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
399 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
400 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
401 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
402 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
403 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
404 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
405 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
406 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
407 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
408 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
409 #ifdef CONFIG_F2FS_FAULT_INJECTION
410 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
411 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
412 #endif
413 F2FS_GENERAL_RO_ATTR(dirty_segments);
414 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
415 F2FS_GENERAL_RO_ATTR(features);
416 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
417
418 #ifdef CONFIG_F2FS_FS_ENCRYPTION
419 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
420 #endif
421 #ifdef CONFIG_BLK_DEV_ZONED
422 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
423 #endif
424 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
425 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
426 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
427 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
428 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
429 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
430 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
431 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
432
433 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
434 static struct attribute *f2fs_attrs[] = {
435 ATTR_LIST(gc_urgent_sleep_time),
436 ATTR_LIST(gc_min_sleep_time),
437 ATTR_LIST(gc_max_sleep_time),
438 ATTR_LIST(gc_no_gc_sleep_time),
439 ATTR_LIST(gc_idle),
440 ATTR_LIST(gc_urgent),
441 ATTR_LIST(reclaim_segments),
442 ATTR_LIST(max_small_discards),
443 ATTR_LIST(discard_granularity),
444 ATTR_LIST(batched_trim_sections),
445 ATTR_LIST(ipu_policy),
446 ATTR_LIST(min_ipu_util),
447 ATTR_LIST(min_fsync_blocks),
448 ATTR_LIST(min_hot_blocks),
449 ATTR_LIST(min_ssr_sections),
450 ATTR_LIST(max_victim_search),
451 ATTR_LIST(dir_level),
452 ATTR_LIST(ram_thresh),
453 ATTR_LIST(ra_nid_pages),
454 ATTR_LIST(dirty_nats_ratio),
455 ATTR_LIST(cp_interval),
456 ATTR_LIST(idle_interval),
457 ATTR_LIST(iostat_enable),
458 ATTR_LIST(readdir_ra),
459 ATTR_LIST(gc_pin_file_thresh),
460 ATTR_LIST(extension_list),
461 #ifdef CONFIG_F2FS_FAULT_INJECTION
462 ATTR_LIST(inject_rate),
463 ATTR_LIST(inject_type),
464 #endif
465 ATTR_LIST(dirty_segments),
466 ATTR_LIST(lifetime_write_kbytes),
467 ATTR_LIST(features),
468 ATTR_LIST(reserved_blocks),
469 ATTR_LIST(current_reserved_blocks),
470 NULL,
471 };
472
473 static struct attribute *f2fs_feat_attrs[] = {
474 #ifdef CONFIG_F2FS_FS_ENCRYPTION
475 ATTR_LIST(encryption),
476 #endif
477 #ifdef CONFIG_BLK_DEV_ZONED
478 ATTR_LIST(block_zoned),
479 #endif
480 ATTR_LIST(atomic_write),
481 ATTR_LIST(extra_attr),
482 ATTR_LIST(project_quota),
483 ATTR_LIST(inode_checksum),
484 ATTR_LIST(flexible_inline_xattr),
485 ATTR_LIST(quota_ino),
486 ATTR_LIST(inode_crtime),
487 ATTR_LIST(lost_found),
488 NULL,
489 };
490
491 static const struct sysfs_ops f2fs_attr_ops = {
492 .show = f2fs_attr_show,
493 .store = f2fs_attr_store,
494 };
495
496 static struct kobj_type f2fs_sb_ktype = {
497 .default_attrs = f2fs_attrs,
498 .sysfs_ops = &f2fs_attr_ops,
499 .release = f2fs_sb_release,
500 };
501
502 static struct kobj_type f2fs_ktype = {
503 .sysfs_ops = &f2fs_attr_ops,
504 };
505
506 static struct kset f2fs_kset = {
507 .kobj = {.ktype = &f2fs_ktype},
508 };
509
510 static struct kobj_type f2fs_feat_ktype = {
511 .default_attrs = f2fs_feat_attrs,
512 .sysfs_ops = &f2fs_attr_ops,
513 };
514
515 static struct kobject f2fs_feat = {
516 .kset = &f2fs_kset,
517 };
518
519 static int segment_info_seq_show(struct seq_file *seq, void *offset)
520 {
521 struct super_block *sb = seq->private;
522 struct f2fs_sb_info *sbi = F2FS_SB(sb);
523 unsigned int total_segs =
524 le32_to_cpu(sbi->raw_super->segment_count_main);
525 int i;
526
527 seq_puts(seq, "format: segment_type|valid_blocks\n"
528 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
529
530 for (i = 0; i < total_segs; i++) {
531 struct seg_entry *se = get_seg_entry(sbi, i);
532
533 if ((i % 10) == 0)
534 seq_printf(seq, "%-10d", i);
535 seq_printf(seq, "%d|%-3u", se->type,
536 get_valid_blocks(sbi, i, false));
537 if ((i % 10) == 9 || i == (total_segs - 1))
538 seq_putc(seq, '\n');
539 else
540 seq_putc(seq, ' ');
541 }
542
543 return 0;
544 }
545
546 static int segment_bits_seq_show(struct seq_file *seq, void *offset)
547 {
548 struct super_block *sb = seq->private;
549 struct f2fs_sb_info *sbi = F2FS_SB(sb);
550 unsigned int total_segs =
551 le32_to_cpu(sbi->raw_super->segment_count_main);
552 int i, j;
553
554 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
555 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
556
557 for (i = 0; i < total_segs; i++) {
558 struct seg_entry *se = get_seg_entry(sbi, i);
559
560 seq_printf(seq, "%-10d", i);
561 seq_printf(seq, "%d|%-3u|", se->type,
562 get_valid_blocks(sbi, i, false));
563 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
564 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
565 seq_putc(seq, '\n');
566 }
567 return 0;
568 }
569
570 static int iostat_info_seq_show(struct seq_file *seq, void *offset)
571 {
572 struct super_block *sb = seq->private;
573 struct f2fs_sb_info *sbi = F2FS_SB(sb);
574 time64_t now = ktime_get_real_seconds();
575
576 if (!sbi->iostat_enable)
577 return 0;
578
579 seq_printf(seq, "time: %-16llu\n", now);
580
581 /* print app IOs */
582 seq_printf(seq, "app buffered: %-16llu\n",
583 sbi->write_iostat[APP_BUFFERED_IO]);
584 seq_printf(seq, "app direct: %-16llu\n",
585 sbi->write_iostat[APP_DIRECT_IO]);
586 seq_printf(seq, "app mapped: %-16llu\n",
587 sbi->write_iostat[APP_MAPPED_IO]);
588
589 /* print fs IOs */
590 seq_printf(seq, "fs data: %-16llu\n",
591 sbi->write_iostat[FS_DATA_IO]);
592 seq_printf(seq, "fs node: %-16llu\n",
593 sbi->write_iostat[FS_NODE_IO]);
594 seq_printf(seq, "fs meta: %-16llu\n",
595 sbi->write_iostat[FS_META_IO]);
596 seq_printf(seq, "fs gc data: %-16llu\n",
597 sbi->write_iostat[FS_GC_DATA_IO]);
598 seq_printf(seq, "fs gc node: %-16llu\n",
599 sbi->write_iostat[FS_GC_NODE_IO]);
600 seq_printf(seq, "fs cp data: %-16llu\n",
601 sbi->write_iostat[FS_CP_DATA_IO]);
602 seq_printf(seq, "fs cp node: %-16llu\n",
603 sbi->write_iostat[FS_CP_NODE_IO]);
604 seq_printf(seq, "fs cp meta: %-16llu\n",
605 sbi->write_iostat[FS_CP_META_IO]);
606 seq_printf(seq, "fs discard: %-16llu\n",
607 sbi->write_iostat[FS_DISCARD]);
608
609 return 0;
610 }
611
612 int __init f2fs_init_sysfs(void)
613 {
614 int ret;
615
616 kobject_set_name(&f2fs_kset.kobj, "f2fs");
617 f2fs_kset.kobj.parent = fs_kobj;
618 ret = kset_register(&f2fs_kset);
619 if (ret)
620 return ret;
621
622 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
623 NULL, "features");
624 if (ret)
625 kset_unregister(&f2fs_kset);
626 else
627 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
628 return ret;
629 }
630
631 void f2fs_exit_sysfs(void)
632 {
633 kobject_put(&f2fs_feat);
634 kset_unregister(&f2fs_kset);
635 remove_proc_entry("fs/f2fs", NULL);
636 f2fs_proc_root = NULL;
637 }
638
639 int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
640 {
641 struct super_block *sb = sbi->sb;
642 int err;
643
644 sbi->s_kobj.kset = &f2fs_kset;
645 init_completion(&sbi->s_kobj_unregister);
646 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
647 "%s", sb->s_id);
648 if (err)
649 return err;
650
651 if (f2fs_proc_root)
652 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
653
654 if (sbi->s_proc) {
655 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc,
656 segment_info_seq_show, sb);
657 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc,
658 segment_bits_seq_show, sb);
659 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc,
660 iostat_info_seq_show, sb);
661 }
662 return 0;
663 }
664
665 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
666 {
667 if (sbi->s_proc) {
668 remove_proc_entry("iostat_info", sbi->s_proc);
669 remove_proc_entry("segment_info", sbi->s_proc);
670 remove_proc_entry("segment_bits", sbi->s_proc);
671 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
672 }
673 kobject_del(&sbi->s_kobj);
674 }
Linux with added FPC-III support