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, "%s%s", 158 len ? ", " : "", "pin_file"); 159 len += snprintf(buf + len, PAGE_SIZE - len, "\n"); 160 return len; 161 } 162 163 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a, 164 struct f2fs_sb_info *sbi, char *buf) 165 { 166 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks); 167 } 168 169 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 170 struct f2fs_sb_info *sbi, char *buf) 171 { 172 unsigned char *ptr = NULL; 173 unsigned int *ui; 174 175 ptr = __struct_ptr(sbi, a->struct_type); 176 if (!ptr) 177 return -EINVAL; 178 179 if (!strcmp(a->attr.name, "extension_list")) { 180 __u8 (*extlist)[F2FS_EXTENSION_LEN] = 181 sbi->raw_super->extension_list; 182 int cold_count = le32_to_cpu(sbi->raw_super->extension_count); 183 int hot_count = sbi->raw_super->hot_ext_count; 184 int len = 0, i; 185 186 len += snprintf(buf + len, PAGE_SIZE - len, 187 "cold file extension:\n"); 188 for (i = 0; i < cold_count; i++) 189 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n", 190 extlist[i]); 191 192 len += snprintf(buf + len, PAGE_SIZE - len, 193 "hot file extension:\n"); 194 for (i = cold_count; i < cold_count + hot_count; i++) 195 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n", 196 extlist[i]); 197 return len; 198 } 199 200 ui = (unsigned int *)(ptr + a->offset); 201 202 return snprintf(buf, PAGE_SIZE, "%u\n", *ui); 203 } 204 205 static ssize_t __sbi_store(struct f2fs_attr *a, 206 struct f2fs_sb_info *sbi, 207 const char *buf, size_t count) 208 { 209 unsigned char *ptr; 210 unsigned long t; 211 unsigned int *ui; 212 ssize_t ret; 213 214 ptr = __struct_ptr(sbi, a->struct_type); 215 if (!ptr) 216 return -EINVAL; 217 218 if (!strcmp(a->attr.name, "extension_list")) { 219 const char *name = strim((char *)buf); 220 bool set = true, hot; 221 222 if (!strncmp(name, "[h]", 3)) 223 hot = true; 224 else if (!strncmp(name, "[c]", 3)) 225 hot = false; 226 else 227 return -EINVAL; 228 229 name += 3; 230 231 if (*name == '!') { 232 name++; 233 set = false; 234 } 235 236 if (strlen(name) >= F2FS_EXTENSION_LEN) 237 return -EINVAL; 238 239 down_write(&sbi->sb_lock); 240 241 ret = f2fs_update_extension_list(sbi, name, hot, set); 242 if (ret) 243 goto out; 244 245 ret = f2fs_commit_super(sbi, false); 246 if (ret) 247 f2fs_update_extension_list(sbi, name, hot, !set); 248 out: 249 up_write(&sbi->sb_lock); 250 return ret ? ret : count; 251 } 252 253 ui = (unsigned int *)(ptr + a->offset); 254 255 ret = kstrtoul(skip_spaces(buf), 0, &t); 256 if (ret < 0) 257 return ret; 258 #ifdef CONFIG_F2FS_FAULT_INJECTION 259 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX)) 260 return -EINVAL; 261 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX) 262 return -EINVAL; 263 #endif 264 if (a->struct_type == RESERVED_BLOCKS) { 265 spin_lock(&sbi->stat_lock); 266 if (t > (unsigned long)(sbi->user_block_count - 267 F2FS_OPTION(sbi).root_reserved_blocks)) { 268 spin_unlock(&sbi->stat_lock); 269 return -EINVAL; 270 } 271 *ui = t; 272 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 273 sbi->user_block_count - valid_user_blocks(sbi)); 274 spin_unlock(&sbi->stat_lock); 275 return count; 276 } 277 278 if (!strcmp(a->attr.name, "discard_granularity")) { 279 if (t == 0 || t > MAX_PLIST_NUM) 280 return -EINVAL; 281 if (t == *ui) 282 return count; 283 *ui = t; 284 return count; 285 } 286 287 if (!strcmp(a->attr.name, "migration_granularity")) { 288 if (t == 0 || t > sbi->segs_per_sec) 289 return -EINVAL; 290 } 291 292 if (!strcmp(a->attr.name, "trim_sections")) 293 return -EINVAL; 294 295 if (!strcmp(a->attr.name, "gc_urgent")) { 296 if (t >= 1) { 297 sbi->gc_mode = GC_URGENT; 298 if (sbi->gc_thread) { 299 sbi->gc_thread->gc_wake = 1; 300 wake_up_interruptible_all( 301 &sbi->gc_thread->gc_wait_queue_head); 302 wake_up_discard_thread(sbi, true); 303 } 304 } else { 305 sbi->gc_mode = GC_NORMAL; 306 } 307 return count; 308 } 309 if (!strcmp(a->attr.name, "gc_idle")) { 310 if (t == GC_IDLE_CB) 311 sbi->gc_mode = GC_IDLE_CB; 312 else if (t == GC_IDLE_GREEDY) 313 sbi->gc_mode = GC_IDLE_GREEDY; 314 else 315 sbi->gc_mode = GC_NORMAL; 316 return count; 317 } 318 319 320 if (!strcmp(a->attr.name, "iostat_enable")) { 321 sbi->iostat_enable = !!t; 322 if (!sbi->iostat_enable) 323 f2fs_reset_iostat(sbi); 324 return count; 325 } 326 327 *ui = (unsigned int)t; 328 329 return count; 330 } 331 332 static ssize_t f2fs_sbi_store(struct f2fs_attr *a, 333 struct f2fs_sb_info *sbi, 334 const char *buf, size_t count) 335 { 336 ssize_t ret; 337 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || 338 a->struct_type == GC_THREAD); 339 340 if (gc_entry) { 341 if (!down_read_trylock(&sbi->sb->s_umount)) 342 return -EAGAIN; 343 } 344 ret = __sbi_store(a, sbi, buf, count); 345 if (gc_entry) 346 up_read(&sbi->sb->s_umount); 347 348 return ret; 349 } 350 351 static ssize_t f2fs_attr_show(struct kobject *kobj, 352 struct attribute *attr, char *buf) 353 { 354 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 355 s_kobj); 356 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 357 358 return a->show ? a->show(a, sbi, buf) : 0; 359 } 360 361 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, 362 const char *buf, size_t len) 363 { 364 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 365 s_kobj); 366 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 367 368 return a->store ? a->store(a, sbi, buf, len) : 0; 369 } 370 371 static void f2fs_sb_release(struct kobject *kobj) 372 { 373 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 374 s_kobj); 375 complete(&sbi->s_kobj_unregister); 376 } 377 378 enum feat_id { 379 FEAT_CRYPTO = 0, 380 FEAT_BLKZONED, 381 FEAT_ATOMIC_WRITE, 382 FEAT_EXTRA_ATTR, 383 FEAT_PROJECT_QUOTA, 384 FEAT_INODE_CHECKSUM, 385 FEAT_FLEXIBLE_INLINE_XATTR, 386 FEAT_QUOTA_INO, 387 FEAT_INODE_CRTIME, 388 FEAT_LOST_FOUND, 389 FEAT_VERITY, 390 FEAT_SB_CHECKSUM, 391 FEAT_CASEFOLD, 392 }; 393 394 static ssize_t f2fs_feature_show(struct f2fs_attr *a, 395 struct f2fs_sb_info *sbi, char *buf) 396 { 397 switch (a->id) { 398 case FEAT_CRYPTO: 399 case FEAT_BLKZONED: 400 case FEAT_ATOMIC_WRITE: 401 case FEAT_EXTRA_ATTR: 402 case FEAT_PROJECT_QUOTA: 403 case FEAT_INODE_CHECKSUM: 404 case FEAT_FLEXIBLE_INLINE_XATTR: 405 case FEAT_QUOTA_INO: 406 case FEAT_INODE_CRTIME: 407 case FEAT_LOST_FOUND: 408 case FEAT_VERITY: 409 case FEAT_SB_CHECKSUM: 410 case FEAT_CASEFOLD: 411 return snprintf(buf, PAGE_SIZE, "supported\n"); 412 } 413 return 0; 414 } 415 416 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ 417 static struct f2fs_attr f2fs_attr_##_name = { \ 418 .attr = {.name = __stringify(_name), .mode = _mode }, \ 419 .show = _show, \ 420 .store = _store, \ 421 .struct_type = _struct_type, \ 422 .offset = _offset \ 423 } 424 425 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ 426 F2FS_ATTR_OFFSET(struct_type, name, 0644, \ 427 f2fs_sbi_show, f2fs_sbi_store, \ 428 offsetof(struct struct_name, elname)) 429 430 #define F2FS_GENERAL_RO_ATTR(name) \ 431 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) 432 433 #define F2FS_FEATURE_RO_ATTR(_name, _id) \ 434 static struct f2fs_attr f2fs_attr_##_name = { \ 435 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 436 .show = f2fs_feature_show, \ 437 .id = _id, \ 438 } 439 440 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time, 441 urgent_sleep_time); 442 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); 443 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); 444 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); 445 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode); 446 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode); 447 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); 448 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, main_blkaddr, main_blkaddr); 449 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards); 450 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity); 451 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks); 452 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); 453 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); 454 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); 455 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); 456 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks); 457 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks); 458 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections); 459 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); 460 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); 461 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); 462 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); 463 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity); 464 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); 465 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); 466 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); 467 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval, 468 interval_time[DISCARD_TIME]); 469 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]); 470 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, 471 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); 472 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable); 473 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra); 474 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold); 475 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); 476 #ifdef CONFIG_F2FS_FAULT_INJECTION 477 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); 478 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); 479 #endif 480 F2FS_GENERAL_RO_ATTR(dirty_segments); 481 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); 482 F2FS_GENERAL_RO_ATTR(features); 483 F2FS_GENERAL_RO_ATTR(current_reserved_blocks); 484 F2FS_GENERAL_RO_ATTR(unusable); 485 F2FS_GENERAL_RO_ATTR(encoding); 486 487 #ifdef CONFIG_FS_ENCRYPTION 488 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO); 489 #endif 490 #ifdef CONFIG_BLK_DEV_ZONED 491 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED); 492 #endif 493 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE); 494 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR); 495 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA); 496 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM); 497 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR); 498 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO); 499 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME); 500 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND); 501 #ifdef CONFIG_FS_VERITY 502 F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY); 503 #endif 504 F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM); 505 F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD); 506 507 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) 508 static struct attribute *f2fs_attrs[] = { 509 ATTR_LIST(gc_urgent_sleep_time), 510 ATTR_LIST(gc_min_sleep_time), 511 ATTR_LIST(gc_max_sleep_time), 512 ATTR_LIST(gc_no_gc_sleep_time), 513 ATTR_LIST(gc_idle), 514 ATTR_LIST(gc_urgent), 515 ATTR_LIST(reclaim_segments), 516 ATTR_LIST(main_blkaddr), 517 ATTR_LIST(max_small_discards), 518 ATTR_LIST(discard_granularity), 519 ATTR_LIST(batched_trim_sections), 520 ATTR_LIST(ipu_policy), 521 ATTR_LIST(min_ipu_util), 522 ATTR_LIST(min_fsync_blocks), 523 ATTR_LIST(min_seq_blocks), 524 ATTR_LIST(min_hot_blocks), 525 ATTR_LIST(min_ssr_sections), 526 ATTR_LIST(max_victim_search), 527 ATTR_LIST(migration_granularity), 528 ATTR_LIST(dir_level), 529 ATTR_LIST(ram_thresh), 530 ATTR_LIST(ra_nid_pages), 531 ATTR_LIST(dirty_nats_ratio), 532 ATTR_LIST(cp_interval), 533 ATTR_LIST(idle_interval), 534 ATTR_LIST(discard_idle_interval), 535 ATTR_LIST(gc_idle_interval), 536 ATTR_LIST(umount_discard_timeout), 537 ATTR_LIST(iostat_enable), 538 ATTR_LIST(readdir_ra), 539 ATTR_LIST(gc_pin_file_thresh), 540 ATTR_LIST(extension_list), 541 #ifdef CONFIG_F2FS_FAULT_INJECTION 542 ATTR_LIST(inject_rate), 543 ATTR_LIST(inject_type), 544 #endif 545 ATTR_LIST(dirty_segments), 546 ATTR_LIST(unusable), 547 ATTR_LIST(lifetime_write_kbytes), 548 ATTR_LIST(features), 549 ATTR_LIST(reserved_blocks), 550 ATTR_LIST(current_reserved_blocks), 551 ATTR_LIST(encoding), 552 NULL, 553 }; 554 ATTRIBUTE_GROUPS(f2fs); 555 556 static struct attribute *f2fs_feat_attrs[] = { 557 #ifdef CONFIG_FS_ENCRYPTION 558 ATTR_LIST(encryption), 559 #endif 560 #ifdef CONFIG_BLK_DEV_ZONED 561 ATTR_LIST(block_zoned), 562 #endif 563 ATTR_LIST(atomic_write), 564 ATTR_LIST(extra_attr), 565 ATTR_LIST(project_quota), 566 ATTR_LIST(inode_checksum), 567 ATTR_LIST(flexible_inline_xattr), 568 ATTR_LIST(quota_ino), 569 ATTR_LIST(inode_crtime), 570 ATTR_LIST(lost_found), 571 #ifdef CONFIG_FS_VERITY 572 ATTR_LIST(verity), 573 #endif 574 ATTR_LIST(sb_checksum), 575 ATTR_LIST(casefold), 576 NULL, 577 }; 578 ATTRIBUTE_GROUPS(f2fs_feat); 579 580 static const struct sysfs_ops f2fs_attr_ops = { 581 .show = f2fs_attr_show, 582 .store = f2fs_attr_store, 583 }; 584 585 static struct kobj_type f2fs_sb_ktype = { 586 .default_groups = f2fs_groups, 587 .sysfs_ops = &f2fs_attr_ops, 588 .release = f2fs_sb_release, 589 }; 590 591 static struct kobj_type f2fs_ktype = { 592 .sysfs_ops = &f2fs_attr_ops, 593 }; 594 595 static struct kset f2fs_kset = { 596 .kobj = {.ktype = &f2fs_ktype}, 597 }; 598 599 static struct kobj_type f2fs_feat_ktype = { 600 .default_groups = f2fs_feat_groups, 601 .sysfs_ops = &f2fs_attr_ops, 602 }; 603 604 static struct kobject f2fs_feat = { 605 .kset = &f2fs_kset, 606 }; 607 608 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 609 void *offset) 610 { 611 struct super_block *sb = seq->private; 612 struct f2fs_sb_info *sbi = F2FS_SB(sb); 613 unsigned int total_segs = 614 le32_to_cpu(sbi->raw_super->segment_count_main); 615 int i; 616 617 seq_puts(seq, "format: segment_type|valid_blocks\n" 618 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 619 620 for (i = 0; i < total_segs; i++) { 621 struct seg_entry *se = get_seg_entry(sbi, i); 622 623 if ((i % 10) == 0) 624 seq_printf(seq, "%-10d", i); 625 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); 626 if ((i % 10) == 9 || i == (total_segs - 1)) 627 seq_putc(seq, '\n'); 628 else 629 seq_putc(seq, ' '); 630 } 631 632 return 0; 633 } 634 635 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 636 void *offset) 637 { 638 struct super_block *sb = seq->private; 639 struct f2fs_sb_info *sbi = F2FS_SB(sb); 640 unsigned int total_segs = 641 le32_to_cpu(sbi->raw_super->segment_count_main); 642 int i, j; 643 644 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" 645 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 646 647 for (i = 0; i < total_segs; i++) { 648 struct seg_entry *se = get_seg_entry(sbi, i); 649 650 seq_printf(seq, "%-10d", i); 651 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); 652 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 653 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 654 seq_putc(seq, '\n'); 655 } 656 return 0; 657 } 658 659 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq, 660 void *offset) 661 { 662 struct super_block *sb = seq->private; 663 struct f2fs_sb_info *sbi = F2FS_SB(sb); 664 time64_t now = ktime_get_real_seconds(); 665 666 if (!sbi->iostat_enable) 667 return 0; 668 669 seq_printf(seq, "time: %-16llu\n", now); 670 671 /* print app IOs */ 672 seq_printf(seq, "app buffered: %-16llu\n", 673 sbi->write_iostat[APP_BUFFERED_IO]); 674 seq_printf(seq, "app direct: %-16llu\n", 675 sbi->write_iostat[APP_DIRECT_IO]); 676 seq_printf(seq, "app mapped: %-16llu\n", 677 sbi->write_iostat[APP_MAPPED_IO]); 678 679 /* print fs IOs */ 680 seq_printf(seq, "fs data: %-16llu\n", 681 sbi->write_iostat[FS_DATA_IO]); 682 seq_printf(seq, "fs node: %-16llu\n", 683 sbi->write_iostat[FS_NODE_IO]); 684 seq_printf(seq, "fs meta: %-16llu\n", 685 sbi->write_iostat[FS_META_IO]); 686 seq_printf(seq, "fs gc data: %-16llu\n", 687 sbi->write_iostat[FS_GC_DATA_IO]); 688 seq_printf(seq, "fs gc node: %-16llu\n", 689 sbi->write_iostat[FS_GC_NODE_IO]); 690 seq_printf(seq, "fs cp data: %-16llu\n", 691 sbi->write_iostat[FS_CP_DATA_IO]); 692 seq_printf(seq, "fs cp node: %-16llu\n", 693 sbi->write_iostat[FS_CP_NODE_IO]); 694 seq_printf(seq, "fs cp meta: %-16llu\n", 695 sbi->write_iostat[FS_CP_META_IO]); 696 seq_printf(seq, "fs discard: %-16llu\n", 697 sbi->write_iostat[FS_DISCARD]); 698 699 return 0; 700 } 701 702 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 703 void *offset) 704 { 705 struct super_block *sb = seq->private; 706 struct f2fs_sb_info *sbi = F2FS_SB(sb); 707 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 708 int i; 709 710 seq_puts(seq, "format: victim_secmap bitmaps\n"); 711 712 for (i = 0; i < MAIN_SECS(sbi); i++) { 713 if ((i % 10) == 0) 714 seq_printf(seq, "%-10d", i); 715 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 716 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 717 seq_putc(seq, '\n'); 718 else 719 seq_putc(seq, ' '); 720 } 721 return 0; 722 } 723 724 int __init f2fs_init_sysfs(void) 725 { 726 int ret; 727 728 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 729 f2fs_kset.kobj.parent = fs_kobj; 730 ret = kset_register(&f2fs_kset); 731 if (ret) 732 return ret; 733 734 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 735 NULL, "features"); 736 if (ret) 737 kset_unregister(&f2fs_kset); 738 else 739 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 740 return ret; 741 } 742 743 void f2fs_exit_sysfs(void) 744 { 745 kobject_put(&f2fs_feat); 746 kset_unregister(&f2fs_kset); 747 remove_proc_entry("fs/f2fs", NULL); 748 f2fs_proc_root = NULL; 749 } 750 751 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 752 { 753 struct super_block *sb = sbi->sb; 754 int err; 755 756 sbi->s_kobj.kset = &f2fs_kset; 757 init_completion(&sbi->s_kobj_unregister); 758 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 759 "%s", sb->s_id); 760 if (err) 761 return err; 762 763 if (f2fs_proc_root) 764 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 765 766 if (sbi->s_proc) { 767 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc, 768 segment_info_seq_show, sb); 769 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc, 770 segment_bits_seq_show, sb); 771 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc, 772 iostat_info_seq_show, sb); 773 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc, 774 victim_bits_seq_show, sb); 775 } 776 return 0; 777 } 778 779 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 780 { 781 if (sbi->s_proc) { 782 remove_proc_entry("iostat_info", sbi->s_proc); 783 remove_proc_entry("segment_info", sbi->s_proc); 784 remove_proc_entry("segment_bits", sbi->s_proc); 785 remove_proc_entry("victim_bits", sbi->s_proc); 786 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root); 787 } 788 kobject_del(&sbi->s_kobj); 789 } 790