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