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 ATTRIBUTE_GROUPS(f2fs); 505 506 static struct attribute *f2fs_feat_attrs[] = { 507 #ifdef CONFIG_FS_ENCRYPTION 508 ATTR_LIST(encryption), 509 #endif 510 #ifdef CONFIG_BLK_DEV_ZONED 511 ATTR_LIST(block_zoned), 512 #endif 513 ATTR_LIST(atomic_write), 514 ATTR_LIST(extra_attr), 515 ATTR_LIST(project_quota), 516 ATTR_LIST(inode_checksum), 517 ATTR_LIST(flexible_inline_xattr), 518 ATTR_LIST(quota_ino), 519 ATTR_LIST(inode_crtime), 520 ATTR_LIST(lost_found), 521 ATTR_LIST(sb_checksum), 522 NULL, 523 }; 524 ATTRIBUTE_GROUPS(f2fs_feat); 525 526 static const struct sysfs_ops f2fs_attr_ops = { 527 .show = f2fs_attr_show, 528 .store = f2fs_attr_store, 529 }; 530 531 static struct kobj_type f2fs_sb_ktype = { 532 .default_groups = f2fs_groups, 533 .sysfs_ops = &f2fs_attr_ops, 534 .release = f2fs_sb_release, 535 }; 536 537 static struct kobj_type f2fs_ktype = { 538 .sysfs_ops = &f2fs_attr_ops, 539 }; 540 541 static struct kset f2fs_kset = { 542 .kobj = {.ktype = &f2fs_ktype}, 543 }; 544 545 static struct kobj_type f2fs_feat_ktype = { 546 .default_groups = f2fs_feat_groups, 547 .sysfs_ops = &f2fs_attr_ops, 548 }; 549 550 static struct kobject f2fs_feat = { 551 .kset = &f2fs_kset, 552 }; 553 554 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 555 void *offset) 556 { 557 struct super_block *sb = seq->private; 558 struct f2fs_sb_info *sbi = F2FS_SB(sb); 559 unsigned int total_segs = 560 le32_to_cpu(sbi->raw_super->segment_count_main); 561 int i; 562 563 seq_puts(seq, "format: segment_type|valid_blocks\n" 564 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 565 566 for (i = 0; i < total_segs; i++) { 567 struct seg_entry *se = get_seg_entry(sbi, i); 568 569 if ((i % 10) == 0) 570 seq_printf(seq, "%-10d", i); 571 seq_printf(seq, "%d|%-3u", se->type, 572 get_valid_blocks(sbi, i, false)); 573 if ((i % 10) == 9 || i == (total_segs - 1)) 574 seq_putc(seq, '\n'); 575 else 576 seq_putc(seq, ' '); 577 } 578 579 return 0; 580 } 581 582 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 583 void *offset) 584 { 585 struct super_block *sb = seq->private; 586 struct f2fs_sb_info *sbi = F2FS_SB(sb); 587 unsigned int total_segs = 588 le32_to_cpu(sbi->raw_super->segment_count_main); 589 int i, j; 590 591 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" 592 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 593 594 for (i = 0; i < total_segs; i++) { 595 struct seg_entry *se = get_seg_entry(sbi, i); 596 597 seq_printf(seq, "%-10d", i); 598 seq_printf(seq, "%d|%-3u|", se->type, 599 get_valid_blocks(sbi, i, false)); 600 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 601 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 602 seq_putc(seq, '\n'); 603 } 604 return 0; 605 } 606 607 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq, 608 void *offset) 609 { 610 struct super_block *sb = seq->private; 611 struct f2fs_sb_info *sbi = F2FS_SB(sb); 612 time64_t now = ktime_get_real_seconds(); 613 614 if (!sbi->iostat_enable) 615 return 0; 616 617 seq_printf(seq, "time: %-16llu\n", now); 618 619 /* print app IOs */ 620 seq_printf(seq, "app buffered: %-16llu\n", 621 sbi->write_iostat[APP_BUFFERED_IO]); 622 seq_printf(seq, "app direct: %-16llu\n", 623 sbi->write_iostat[APP_DIRECT_IO]); 624 seq_printf(seq, "app mapped: %-16llu\n", 625 sbi->write_iostat[APP_MAPPED_IO]); 626 627 /* print fs IOs */ 628 seq_printf(seq, "fs data: %-16llu\n", 629 sbi->write_iostat[FS_DATA_IO]); 630 seq_printf(seq, "fs node: %-16llu\n", 631 sbi->write_iostat[FS_NODE_IO]); 632 seq_printf(seq, "fs meta: %-16llu\n", 633 sbi->write_iostat[FS_META_IO]); 634 seq_printf(seq, "fs gc data: %-16llu\n", 635 sbi->write_iostat[FS_GC_DATA_IO]); 636 seq_printf(seq, "fs gc node: %-16llu\n", 637 sbi->write_iostat[FS_GC_NODE_IO]); 638 seq_printf(seq, "fs cp data: %-16llu\n", 639 sbi->write_iostat[FS_CP_DATA_IO]); 640 seq_printf(seq, "fs cp node: %-16llu\n", 641 sbi->write_iostat[FS_CP_NODE_IO]); 642 seq_printf(seq, "fs cp meta: %-16llu\n", 643 sbi->write_iostat[FS_CP_META_IO]); 644 seq_printf(seq, "fs discard: %-16llu\n", 645 sbi->write_iostat[FS_DISCARD]); 646 647 return 0; 648 } 649 650 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 651 void *offset) 652 { 653 struct super_block *sb = seq->private; 654 struct f2fs_sb_info *sbi = F2FS_SB(sb); 655 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 656 int i; 657 658 seq_puts(seq, "format: victim_secmap bitmaps\n"); 659 660 for (i = 0; i < MAIN_SECS(sbi); i++) { 661 if ((i % 10) == 0) 662 seq_printf(seq, "%-10d", i); 663 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 664 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 665 seq_putc(seq, '\n'); 666 else 667 seq_putc(seq, ' '); 668 } 669 return 0; 670 } 671 672 int __init f2fs_init_sysfs(void) 673 { 674 int ret; 675 676 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 677 f2fs_kset.kobj.parent = fs_kobj; 678 ret = kset_register(&f2fs_kset); 679 if (ret) 680 return ret; 681 682 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 683 NULL, "features"); 684 if (ret) 685 kset_unregister(&f2fs_kset); 686 else 687 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 688 return ret; 689 } 690 691 void f2fs_exit_sysfs(void) 692 { 693 kobject_put(&f2fs_feat); 694 kset_unregister(&f2fs_kset); 695 remove_proc_entry("fs/f2fs", NULL); 696 f2fs_proc_root = NULL; 697 } 698 699 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 700 { 701 struct super_block *sb = sbi->sb; 702 int err; 703 704 sbi->s_kobj.kset = &f2fs_kset; 705 init_completion(&sbi->s_kobj_unregister); 706 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 707 "%s", sb->s_id); 708 if (err) 709 return err; 710 711 if (f2fs_proc_root) 712 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 713 714 if (sbi->s_proc) { 715 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc, 716 segment_info_seq_show, sb); 717 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc, 718 segment_bits_seq_show, sb); 719 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc, 720 iostat_info_seq_show, sb); 721 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc, 722 victim_bits_seq_show, sb); 723 } 724 return 0; 725 } 726 727 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 728 { 729 if (sbi->s_proc) { 730 remove_proc_entry("iostat_info", sbi->s_proc); 731 remove_proc_entry("segment_info", sbi->s_proc); 732 remove_proc_entry("segment_bits", sbi->s_proc); 733 remove_proc_entry("victim_bits", sbi->s_proc); 734 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root); 735 } 736 kobject_del(&sbi->s_kobj); 737 } 738