1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * f2fs sysfs interface 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 * Copyright (c) 2017 Chao Yu <chao@kernel.org> 8 */ 9 #include <linux/compiler.h> 10 #include <linux/proc_fs.h> 11 #include <linux/f2fs_fs.h> 12 #include <linux/seq_file.h> 13 #include <linux/unicode.h> 14 15 #include "f2fs.h" 16 #include "segment.h" 17 #include "gc.h" 18 19 static struct proc_dir_entry *f2fs_proc_root; 20 21 /* Sysfs support for f2fs */ 22 enum { 23 GC_THREAD, /* struct f2fs_gc_thread */ 24 SM_INFO, /* struct f2fs_sm_info */ 25 DCC_INFO, /* struct discard_cmd_control */ 26 NM_INFO, /* struct f2fs_nm_info */ 27 F2FS_SBI, /* struct f2fs_sb_info */ 28 #ifdef CONFIG_F2FS_FAULT_INJECTION 29 FAULT_INFO_RATE, /* struct f2fs_fault_info */ 30 FAULT_INFO_TYPE, /* struct f2fs_fault_info */ 31 #endif 32 RESERVED_BLOCKS, /* struct f2fs_sb_info */ 33 }; 34 35 struct f2fs_attr { 36 struct attribute attr; 37 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); 38 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, 39 const char *, size_t); 40 int struct_type; 41 int offset; 42 int id; 43 }; 44 45 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) 46 { 47 if (struct_type == GC_THREAD) 48 return (unsigned char *)sbi->gc_thread; 49 else if (struct_type == SM_INFO) 50 return (unsigned char *)SM_I(sbi); 51 else if (struct_type == DCC_INFO) 52 return (unsigned char *)SM_I(sbi)->dcc_info; 53 else if (struct_type == NM_INFO) 54 return (unsigned char *)NM_I(sbi); 55 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS) 56 return (unsigned char *)sbi; 57 #ifdef CONFIG_F2FS_FAULT_INJECTION 58 else if (struct_type == FAULT_INFO_RATE || 59 struct_type == FAULT_INFO_TYPE) 60 return (unsigned char *)&F2FS_OPTION(sbi).fault_info; 61 #endif 62 return NULL; 63 } 64 65 static ssize_t dirty_segments_show(struct f2fs_attr *a, 66 struct f2fs_sb_info *sbi, char *buf) 67 { 68 return snprintf(buf, PAGE_SIZE, "%llu\n", 69 (unsigned long long)(dirty_segments(sbi))); 70 } 71 72 static ssize_t unusable_show(struct f2fs_attr *a, 73 struct f2fs_sb_info *sbi, char *buf) 74 { 75 block_t unusable; 76 77 if (test_opt(sbi, DISABLE_CHECKPOINT)) 78 unusable = sbi->unusable_block_count; 79 else 80 unusable = f2fs_get_unusable_blocks(sbi); 81 return snprintf(buf, PAGE_SIZE, "%llu\n", 82 (unsigned long long)unusable); 83 } 84 85 static ssize_t encoding_show(struct f2fs_attr *a, 86 struct f2fs_sb_info *sbi, char *buf) 87 { 88 #ifdef CONFIG_UNICODE 89 if (f2fs_sb_has_casefold(sbi)) 90 return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n", 91 sbi->s_encoding->charset, 92 (sbi->s_encoding->version >> 16) & 0xff, 93 (sbi->s_encoding->version >> 8) & 0xff, 94 sbi->s_encoding->version & 0xff); 95 #endif 96 return snprintf(buf, PAGE_SIZE, "(none)"); 97 } 98 99 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, 100 struct f2fs_sb_info *sbi, char *buf) 101 { 102 struct super_block *sb = sbi->sb; 103 104 if (!sb->s_bdev->bd_part) 105 return snprintf(buf, PAGE_SIZE, "0\n"); 106 107 return snprintf(buf, PAGE_SIZE, "%llu\n", 108 (unsigned long long)(sbi->kbytes_written + 109 BD_PART_WRITTEN(sbi))); 110 } 111 112 static ssize_t features_show(struct f2fs_attr *a, 113 struct f2fs_sb_info *sbi, char *buf) 114 { 115 struct super_block *sb = sbi->sb; 116 int len = 0; 117 118 if (!sb->s_bdev->bd_part) 119 return snprintf(buf, PAGE_SIZE, "0\n"); 120 121 if (f2fs_sb_has_encrypt(sbi)) 122 len += snprintf(buf, PAGE_SIZE - len, "%s", 123 "encryption"); 124 if (f2fs_sb_has_blkzoned(sbi)) 125 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 126 len ? ", " : "", "blkzoned"); 127 if (f2fs_sb_has_extra_attr(sbi)) 128 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 129 len ? ", " : "", "extra_attr"); 130 if (f2fs_sb_has_project_quota(sbi)) 131 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 132 len ? ", " : "", "projquota"); 133 if (f2fs_sb_has_inode_chksum(sbi)) 134 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 135 len ? ", " : "", "inode_checksum"); 136 if (f2fs_sb_has_flexible_inline_xattr(sbi)) 137 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 138 len ? ", " : "", "flexible_inline_xattr"); 139 if (f2fs_sb_has_quota_ino(sbi)) 140 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 141 len ? ", " : "", "quota_ino"); 142 if (f2fs_sb_has_inode_crtime(sbi)) 143 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 144 len ? ", " : "", "inode_crtime"); 145 if (f2fs_sb_has_lost_found(sbi)) 146 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 147 len ? ", " : "", "lost_found"); 148 if (f2fs_sb_has_verity(sbi)) 149 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 150 len ? ", " : "", "verity"); 151 if (f2fs_sb_has_sb_chksum(sbi)) 152 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 153 len ? ", " : "", "sb_checksum"); 154 if (f2fs_sb_has_casefold(sbi)) 155 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", 156 len ? ", " : "", "casefold"); 157 len += snprintf(buf + len, PAGE_SIZE - len, "\n"); 158 return len; 159 } 160 161 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a, 162 struct f2fs_sb_info *sbi, char *buf) 163 { 164 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks); 165 } 166 167 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 168 struct f2fs_sb_info *sbi, char *buf) 169 { 170 unsigned char *ptr = NULL; 171 unsigned int *ui; 172 173 ptr = __struct_ptr(sbi, a->struct_type); 174 if (!ptr) 175 return -EINVAL; 176 177 if (!strcmp(a->attr.name, "extension_list")) { 178 __u8 (*extlist)[F2FS_EXTENSION_LEN] = 179 sbi->raw_super->extension_list; 180 int cold_count = le32_to_cpu(sbi->raw_super->extension_count); 181 int hot_count = sbi->raw_super->hot_ext_count; 182 int len = 0, i; 183 184 len += snprintf(buf + len, PAGE_SIZE - len, 185 "cold file extension:\n"); 186 for (i = 0; i < cold_count; i++) 187 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n", 188 extlist[i]); 189 190 len += snprintf(buf + len, PAGE_SIZE - len, 191 "hot file extension:\n"); 192 for (i = cold_count; i < cold_count + hot_count; i++) 193 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n", 194 extlist[i]); 195 return len; 196 } 197 198 ui = (unsigned int *)(ptr + a->offset); 199 200 return snprintf(buf, PAGE_SIZE, "%u\n", *ui); 201 } 202 203 static ssize_t __sbi_store(struct f2fs_attr *a, 204 struct f2fs_sb_info *sbi, 205 const char *buf, size_t count) 206 { 207 unsigned char *ptr; 208 unsigned long t; 209 unsigned int *ui; 210 ssize_t ret; 211 212 ptr = __struct_ptr(sbi, a->struct_type); 213 if (!ptr) 214 return -EINVAL; 215 216 if (!strcmp(a->attr.name, "extension_list")) { 217 const char *name = strim((char *)buf); 218 bool set = true, hot; 219 220 if (!strncmp(name, "[h]", 3)) 221 hot = true; 222 else if (!strncmp(name, "[c]", 3)) 223 hot = false; 224 else 225 return -EINVAL; 226 227 name += 3; 228 229 if (*name == '!') { 230 name++; 231 set = false; 232 } 233 234 if (strlen(name) >= F2FS_EXTENSION_LEN) 235 return -EINVAL; 236 237 down_write(&sbi->sb_lock); 238 239 ret = f2fs_update_extension_list(sbi, name, hot, set); 240 if (ret) 241 goto out; 242 243 ret = f2fs_commit_super(sbi, false); 244 if (ret) 245 f2fs_update_extension_list(sbi, name, hot, !set); 246 out: 247 up_write(&sbi->sb_lock); 248 return ret ? ret : count; 249 } 250 251 ui = (unsigned int *)(ptr + a->offset); 252 253 ret = kstrtoul(skip_spaces(buf), 0, &t); 254 if (ret < 0) 255 return ret; 256 #ifdef CONFIG_F2FS_FAULT_INJECTION 257 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX)) 258 return -EINVAL; 259 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX) 260 return -EINVAL; 261 #endif 262 if (a->struct_type == RESERVED_BLOCKS) { 263 spin_lock(&sbi->stat_lock); 264 if (t > (unsigned long)(sbi->user_block_count - 265 F2FS_OPTION(sbi).root_reserved_blocks)) { 266 spin_unlock(&sbi->stat_lock); 267 return -EINVAL; 268 } 269 *ui = t; 270 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 271 sbi->user_block_count - valid_user_blocks(sbi)); 272 spin_unlock(&sbi->stat_lock); 273 return count; 274 } 275 276 if (!strcmp(a->attr.name, "discard_granularity")) { 277 if (t == 0 || t > MAX_PLIST_NUM) 278 return -EINVAL; 279 if (t == *ui) 280 return count; 281 *ui = t; 282 return count; 283 } 284 285 if (!strcmp(a->attr.name, "migration_granularity")) { 286 if (t == 0 || t > sbi->segs_per_sec) 287 return -EINVAL; 288 } 289 290 if (!strcmp(a->attr.name, "trim_sections")) 291 return -EINVAL; 292 293 if (!strcmp(a->attr.name, "gc_urgent")) { 294 if (t >= 1) { 295 sbi->gc_mode = GC_URGENT; 296 if (sbi->gc_thread) { 297 sbi->gc_thread->gc_wake = 1; 298 wake_up_interruptible_all( 299 &sbi->gc_thread->gc_wait_queue_head); 300 wake_up_discard_thread(sbi, true); 301 } 302 } else { 303 sbi->gc_mode = GC_NORMAL; 304 } 305 return count; 306 } 307 if (!strcmp(a->attr.name, "gc_idle")) { 308 if (t == GC_IDLE_CB) 309 sbi->gc_mode = GC_IDLE_CB; 310 else if (t == GC_IDLE_GREEDY) 311 sbi->gc_mode = GC_IDLE_GREEDY; 312 else 313 sbi->gc_mode = GC_NORMAL; 314 return count; 315 } 316 317 318 if (!strcmp(a->attr.name, "iostat_enable")) { 319 sbi->iostat_enable = !!t; 320 if (!sbi->iostat_enable) 321 f2fs_reset_iostat(sbi); 322 return count; 323 } 324 325 *ui = (unsigned int)t; 326 327 return count; 328 } 329 330 static ssize_t f2fs_sbi_store(struct f2fs_attr *a, 331 struct f2fs_sb_info *sbi, 332 const char *buf, size_t count) 333 { 334 ssize_t ret; 335 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || 336 a->struct_type == GC_THREAD); 337 338 if (gc_entry) { 339 if (!down_read_trylock(&sbi->sb->s_umount)) 340 return -EAGAIN; 341 } 342 ret = __sbi_store(a, sbi, buf, count); 343 if (gc_entry) 344 up_read(&sbi->sb->s_umount); 345 346 return ret; 347 } 348 349 static ssize_t f2fs_attr_show(struct kobject *kobj, 350 struct attribute *attr, char *buf) 351 { 352 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 353 s_kobj); 354 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 355 356 return a->show ? a->show(a, sbi, buf) : 0; 357 } 358 359 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, 360 const char *buf, size_t len) 361 { 362 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 363 s_kobj); 364 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 365 366 return a->store ? a->store(a, sbi, buf, len) : 0; 367 } 368 369 static void f2fs_sb_release(struct kobject *kobj) 370 { 371 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 372 s_kobj); 373 complete(&sbi->s_kobj_unregister); 374 } 375 376 enum feat_id { 377 FEAT_CRYPTO = 0, 378 FEAT_BLKZONED, 379 FEAT_ATOMIC_WRITE, 380 FEAT_EXTRA_ATTR, 381 FEAT_PROJECT_QUOTA, 382 FEAT_INODE_CHECKSUM, 383 FEAT_FLEXIBLE_INLINE_XATTR, 384 FEAT_QUOTA_INO, 385 FEAT_INODE_CRTIME, 386 FEAT_LOST_FOUND, 387 FEAT_VERITY, 388 FEAT_SB_CHECKSUM, 389 FEAT_CASEFOLD, 390 }; 391 392 static ssize_t f2fs_feature_show(struct f2fs_attr *a, 393 struct f2fs_sb_info *sbi, char *buf) 394 { 395 switch (a->id) { 396 case FEAT_CRYPTO: 397 case FEAT_BLKZONED: 398 case FEAT_ATOMIC_WRITE: 399 case FEAT_EXTRA_ATTR: 400 case FEAT_PROJECT_QUOTA: 401 case FEAT_INODE_CHECKSUM: 402 case FEAT_FLEXIBLE_INLINE_XATTR: 403 case FEAT_QUOTA_INO: 404 case FEAT_INODE_CRTIME: 405 case FEAT_LOST_FOUND: 406 case FEAT_VERITY: 407 case FEAT_SB_CHECKSUM: 408 case FEAT_CASEFOLD: 409 return snprintf(buf, PAGE_SIZE, "supported\n"); 410 } 411 return 0; 412 } 413 414 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ 415 static struct f2fs_attr f2fs_attr_##_name = { \ 416 .attr = {.name = __stringify(_name), .mode = _mode }, \ 417 .show = _show, \ 418 .store = _store, \ 419 .struct_type = _struct_type, \ 420 .offset = _offset \ 421 } 422 423 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ 424 F2FS_ATTR_OFFSET(struct_type, name, 0644, \ 425 f2fs_sbi_show, f2fs_sbi_store, \ 426 offsetof(struct struct_name, elname)) 427 428 #define F2FS_GENERAL_RO_ATTR(name) \ 429 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) 430 431 #define F2FS_FEATURE_RO_ATTR(_name, _id) \ 432 static struct f2fs_attr f2fs_attr_##_name = { \ 433 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 434 .show = f2fs_feature_show, \ 435 .id = _id, \ 436 } 437 438 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time, 439 urgent_sleep_time); 440 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); 441 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); 442 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); 443 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode); 444 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode); 445 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); 446 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards); 447 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity); 448 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks); 449 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); 450 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); 451 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); 452 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); 453 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks); 454 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks); 455 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections); 456 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); 457 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); 458 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); 459 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); 460 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity); 461 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); 462 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); 463 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); 464 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval, 465 interval_time[DISCARD_TIME]); 466 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]); 467 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, 468 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); 469 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable); 470 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra); 471 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold); 472 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); 473 #ifdef CONFIG_F2FS_FAULT_INJECTION 474 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); 475 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); 476 #endif 477 F2FS_GENERAL_RO_ATTR(dirty_segments); 478 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); 479 F2FS_GENERAL_RO_ATTR(features); 480 F2FS_GENERAL_RO_ATTR(current_reserved_blocks); 481 F2FS_GENERAL_RO_ATTR(unusable); 482 F2FS_GENERAL_RO_ATTR(encoding); 483 484 #ifdef CONFIG_FS_ENCRYPTION 485 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO); 486 #endif 487 #ifdef CONFIG_BLK_DEV_ZONED 488 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED); 489 #endif 490 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE); 491 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR); 492 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA); 493 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM); 494 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR); 495 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO); 496 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME); 497 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND); 498 #ifdef CONFIG_FS_VERITY 499 F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY); 500 #endif 501 F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM); 502 F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD); 503 504 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) 505 static struct attribute *f2fs_attrs[] = { 506 ATTR_LIST(gc_urgent_sleep_time), 507 ATTR_LIST(gc_min_sleep_time), 508 ATTR_LIST(gc_max_sleep_time), 509 ATTR_LIST(gc_no_gc_sleep_time), 510 ATTR_LIST(gc_idle), 511 ATTR_LIST(gc_urgent), 512 ATTR_LIST(reclaim_segments), 513 ATTR_LIST(max_small_discards), 514 ATTR_LIST(discard_granularity), 515 ATTR_LIST(batched_trim_sections), 516 ATTR_LIST(ipu_policy), 517 ATTR_LIST(min_ipu_util), 518 ATTR_LIST(min_fsync_blocks), 519 ATTR_LIST(min_seq_blocks), 520 ATTR_LIST(min_hot_blocks), 521 ATTR_LIST(min_ssr_sections), 522 ATTR_LIST(max_victim_search), 523 ATTR_LIST(migration_granularity), 524 ATTR_LIST(dir_level), 525 ATTR_LIST(ram_thresh), 526 ATTR_LIST(ra_nid_pages), 527 ATTR_LIST(dirty_nats_ratio), 528 ATTR_LIST(cp_interval), 529 ATTR_LIST(idle_interval), 530 ATTR_LIST(discard_idle_interval), 531 ATTR_LIST(gc_idle_interval), 532 ATTR_LIST(umount_discard_timeout), 533 ATTR_LIST(iostat_enable), 534 ATTR_LIST(readdir_ra), 535 ATTR_LIST(gc_pin_file_thresh), 536 ATTR_LIST(extension_list), 537 #ifdef CONFIG_F2FS_FAULT_INJECTION 538 ATTR_LIST(inject_rate), 539 ATTR_LIST(inject_type), 540 #endif 541 ATTR_LIST(dirty_segments), 542 ATTR_LIST(unusable), 543 ATTR_LIST(lifetime_write_kbytes), 544 ATTR_LIST(features), 545 ATTR_LIST(reserved_blocks), 546 ATTR_LIST(current_reserved_blocks), 547 ATTR_LIST(encoding), 548 NULL, 549 }; 550 ATTRIBUTE_GROUPS(f2fs); 551 552 static struct attribute *f2fs_feat_attrs[] = { 553 #ifdef CONFIG_FS_ENCRYPTION 554 ATTR_LIST(encryption), 555 #endif 556 #ifdef CONFIG_BLK_DEV_ZONED 557 ATTR_LIST(block_zoned), 558 #endif 559 ATTR_LIST(atomic_write), 560 ATTR_LIST(extra_attr), 561 ATTR_LIST(project_quota), 562 ATTR_LIST(inode_checksum), 563 ATTR_LIST(flexible_inline_xattr), 564 ATTR_LIST(quota_ino), 565 ATTR_LIST(inode_crtime), 566 ATTR_LIST(lost_found), 567 #ifdef CONFIG_FS_VERITY 568 ATTR_LIST(verity), 569 #endif 570 ATTR_LIST(sb_checksum), 571 ATTR_LIST(casefold), 572 NULL, 573 }; 574 ATTRIBUTE_GROUPS(f2fs_feat); 575 576 static const struct sysfs_ops f2fs_attr_ops = { 577 .show = f2fs_attr_show, 578 .store = f2fs_attr_store, 579 }; 580 581 static struct kobj_type f2fs_sb_ktype = { 582 .default_groups = f2fs_groups, 583 .sysfs_ops = &f2fs_attr_ops, 584 .release = f2fs_sb_release, 585 }; 586 587 static struct kobj_type f2fs_ktype = { 588 .sysfs_ops = &f2fs_attr_ops, 589 }; 590 591 static struct kset f2fs_kset = { 592 .kobj = {.ktype = &f2fs_ktype}, 593 }; 594 595 static struct kobj_type f2fs_feat_ktype = { 596 .default_groups = f2fs_feat_groups, 597 .sysfs_ops = &f2fs_attr_ops, 598 }; 599 600 static struct kobject f2fs_feat = { 601 .kset = &f2fs_kset, 602 }; 603 604 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 605 void *offset) 606 { 607 struct super_block *sb = seq->private; 608 struct f2fs_sb_info *sbi = F2FS_SB(sb); 609 unsigned int total_segs = 610 le32_to_cpu(sbi->raw_super->segment_count_main); 611 int i; 612 613 seq_puts(seq, "format: segment_type|valid_blocks\n" 614 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 615 616 for (i = 0; i < total_segs; i++) { 617 struct seg_entry *se = get_seg_entry(sbi, i); 618 619 if ((i % 10) == 0) 620 seq_printf(seq, "%-10d", i); 621 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); 622 if ((i % 10) == 9 || i == (total_segs - 1)) 623 seq_putc(seq, '\n'); 624 else 625 seq_putc(seq, ' '); 626 } 627 628 return 0; 629 } 630 631 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 632 void *offset) 633 { 634 struct super_block *sb = seq->private; 635 struct f2fs_sb_info *sbi = F2FS_SB(sb); 636 unsigned int total_segs = 637 le32_to_cpu(sbi->raw_super->segment_count_main); 638 int i, j; 639 640 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" 641 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 642 643 for (i = 0; i < total_segs; i++) { 644 struct seg_entry *se = get_seg_entry(sbi, i); 645 646 seq_printf(seq, "%-10d", i); 647 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); 648 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 649 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 650 seq_putc(seq, '\n'); 651 } 652 return 0; 653 } 654 655 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq, 656 void *offset) 657 { 658 struct super_block *sb = seq->private; 659 struct f2fs_sb_info *sbi = F2FS_SB(sb); 660 time64_t now = ktime_get_real_seconds(); 661 662 if (!sbi->iostat_enable) 663 return 0; 664 665 seq_printf(seq, "time: %-16llu\n", now); 666 667 /* print app IOs */ 668 seq_printf(seq, "app buffered: %-16llu\n", 669 sbi->write_iostat[APP_BUFFERED_IO]); 670 seq_printf(seq, "app direct: %-16llu\n", 671 sbi->write_iostat[APP_DIRECT_IO]); 672 seq_printf(seq, "app mapped: %-16llu\n", 673 sbi->write_iostat[APP_MAPPED_IO]); 674 675 /* print fs IOs */ 676 seq_printf(seq, "fs data: %-16llu\n", 677 sbi->write_iostat[FS_DATA_IO]); 678 seq_printf(seq, "fs node: %-16llu\n", 679 sbi->write_iostat[FS_NODE_IO]); 680 seq_printf(seq, "fs meta: %-16llu\n", 681 sbi->write_iostat[FS_META_IO]); 682 seq_printf(seq, "fs gc data: %-16llu\n", 683 sbi->write_iostat[FS_GC_DATA_IO]); 684 seq_printf(seq, "fs gc node: %-16llu\n", 685 sbi->write_iostat[FS_GC_NODE_IO]); 686 seq_printf(seq, "fs cp data: %-16llu\n", 687 sbi->write_iostat[FS_CP_DATA_IO]); 688 seq_printf(seq, "fs cp node: %-16llu\n", 689 sbi->write_iostat[FS_CP_NODE_IO]); 690 seq_printf(seq, "fs cp meta: %-16llu\n", 691 sbi->write_iostat[FS_CP_META_IO]); 692 seq_printf(seq, "fs discard: %-16llu\n", 693 sbi->write_iostat[FS_DISCARD]); 694 695 return 0; 696 } 697 698 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 699 void *offset) 700 { 701 struct super_block *sb = seq->private; 702 struct f2fs_sb_info *sbi = F2FS_SB(sb); 703 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 704 int i; 705 706 seq_puts(seq, "format: victim_secmap bitmaps\n"); 707 708 for (i = 0; i < MAIN_SECS(sbi); i++) { 709 if ((i % 10) == 0) 710 seq_printf(seq, "%-10d", i); 711 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 712 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 713 seq_putc(seq, '\n'); 714 else 715 seq_putc(seq, ' '); 716 } 717 return 0; 718 } 719 720 int __init f2fs_init_sysfs(void) 721 { 722 int ret; 723 724 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 725 f2fs_kset.kobj.parent = fs_kobj; 726 ret = kset_register(&f2fs_kset); 727 if (ret) 728 return ret; 729 730 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 731 NULL, "features"); 732 if (ret) 733 kset_unregister(&f2fs_kset); 734 else 735 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 736 return ret; 737 } 738 739 void f2fs_exit_sysfs(void) 740 { 741 kobject_put(&f2fs_feat); 742 kset_unregister(&f2fs_kset); 743 remove_proc_entry("fs/f2fs", NULL); 744 f2fs_proc_root = NULL; 745 } 746 747 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 748 { 749 struct super_block *sb = sbi->sb; 750 int err; 751 752 sbi->s_kobj.kset = &f2fs_kset; 753 init_completion(&sbi->s_kobj_unregister); 754 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 755 "%s", sb->s_id); 756 if (err) 757 return err; 758 759 if (f2fs_proc_root) 760 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 761 762 if (sbi->s_proc) { 763 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc, 764 segment_info_seq_show, sb); 765 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc, 766 segment_bits_seq_show, sb); 767 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc, 768 iostat_info_seq_show, sb); 769 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc, 770 victim_bits_seq_show, sb); 771 } 772 return 0; 773 } 774 775 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 776 { 777 if (sbi->s_proc) { 778 remove_proc_entry("iostat_info", sbi->s_proc); 779 remove_proc_entry("segment_info", sbi->s_proc); 780 remove_proc_entry("segment_bits", sbi->s_proc); 781 remove_proc_entry("victim_bits", sbi->s_proc); 782 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root); 783 } 784 kobject_del(&sbi->s_kobj); 785 } 786