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 #include <trace/events/f2fs.h> 19 20 static struct proc_dir_entry *f2fs_proc_root; 21 22 /* Sysfs support for f2fs */ 23 enum { 24 GC_THREAD, /* struct f2fs_gc_thread */ 25 SM_INFO, /* struct f2fs_sm_info */ 26 DCC_INFO, /* struct discard_cmd_control */ 27 NM_INFO, /* struct f2fs_nm_info */ 28 F2FS_SBI, /* struct f2fs_sb_info */ 29 #ifdef CONFIG_F2FS_STAT_FS 30 STAT_INFO, /* struct f2fs_stat_info */ 31 #endif 32 #ifdef CONFIG_F2FS_FAULT_INJECTION 33 FAULT_INFO_RATE, /* struct f2fs_fault_info */ 34 FAULT_INFO_TYPE, /* struct f2fs_fault_info */ 35 #endif 36 RESERVED_BLOCKS, /* struct f2fs_sb_info */ 37 }; 38 39 struct f2fs_attr { 40 struct attribute attr; 41 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); 42 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, 43 const char *, size_t); 44 int struct_type; 45 int offset; 46 int id; 47 }; 48 49 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 50 struct f2fs_sb_info *sbi, char *buf); 51 52 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) 53 { 54 if (struct_type == GC_THREAD) 55 return (unsigned char *)sbi->gc_thread; 56 else if (struct_type == SM_INFO) 57 return (unsigned char *)SM_I(sbi); 58 else if (struct_type == DCC_INFO) 59 return (unsigned char *)SM_I(sbi)->dcc_info; 60 else if (struct_type == NM_INFO) 61 return (unsigned char *)NM_I(sbi); 62 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS) 63 return (unsigned char *)sbi; 64 #ifdef CONFIG_F2FS_FAULT_INJECTION 65 else if (struct_type == FAULT_INFO_RATE || 66 struct_type == FAULT_INFO_TYPE) 67 return (unsigned char *)&F2FS_OPTION(sbi).fault_info; 68 #endif 69 #ifdef CONFIG_F2FS_STAT_FS 70 else if (struct_type == STAT_INFO) 71 return (unsigned char *)F2FS_STAT(sbi); 72 #endif 73 return NULL; 74 } 75 76 static ssize_t dirty_segments_show(struct f2fs_attr *a, 77 struct f2fs_sb_info *sbi, char *buf) 78 { 79 return sprintf(buf, "%llu\n", 80 (unsigned long long)(dirty_segments(sbi))); 81 } 82 83 static ssize_t free_segments_show(struct f2fs_attr *a, 84 struct f2fs_sb_info *sbi, char *buf) 85 { 86 return sprintf(buf, "%llu\n", 87 (unsigned long long)(free_segments(sbi))); 88 } 89 90 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, 91 struct f2fs_sb_info *sbi, char *buf) 92 { 93 struct super_block *sb = sbi->sb; 94 95 if (!sb->s_bdev->bd_part) 96 return sprintf(buf, "0\n"); 97 98 return sprintf(buf, "%llu\n", 99 (unsigned long long)(sbi->kbytes_written + 100 BD_PART_WRITTEN(sbi))); 101 } 102 103 static ssize_t features_show(struct f2fs_attr *a, 104 struct f2fs_sb_info *sbi, char *buf) 105 { 106 struct super_block *sb = sbi->sb; 107 int len = 0; 108 109 if (!sb->s_bdev->bd_part) 110 return sprintf(buf, "0\n"); 111 112 if (f2fs_sb_has_encrypt(sbi)) 113 len += scnprintf(buf, PAGE_SIZE - len, "%s", 114 "encryption"); 115 if (f2fs_sb_has_blkzoned(sbi)) 116 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 117 len ? ", " : "", "blkzoned"); 118 if (f2fs_sb_has_extra_attr(sbi)) 119 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 120 len ? ", " : "", "extra_attr"); 121 if (f2fs_sb_has_project_quota(sbi)) 122 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 123 len ? ", " : "", "projquota"); 124 if (f2fs_sb_has_inode_chksum(sbi)) 125 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 126 len ? ", " : "", "inode_checksum"); 127 if (f2fs_sb_has_flexible_inline_xattr(sbi)) 128 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 129 len ? ", " : "", "flexible_inline_xattr"); 130 if (f2fs_sb_has_quota_ino(sbi)) 131 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 132 len ? ", " : "", "quota_ino"); 133 if (f2fs_sb_has_inode_crtime(sbi)) 134 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 135 len ? ", " : "", "inode_crtime"); 136 if (f2fs_sb_has_lost_found(sbi)) 137 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 138 len ? ", " : "", "lost_found"); 139 if (f2fs_sb_has_verity(sbi)) 140 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 141 len ? ", " : "", "verity"); 142 if (f2fs_sb_has_sb_chksum(sbi)) 143 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 144 len ? ", " : "", "sb_checksum"); 145 if (f2fs_sb_has_casefold(sbi)) 146 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 147 len ? ", " : "", "casefold"); 148 if (f2fs_sb_has_compression(sbi)) 149 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 150 len ? ", " : "", "compression"); 151 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 152 len ? ", " : "", "pin_file"); 153 len += scnprintf(buf + len, PAGE_SIZE - len, "\n"); 154 return len; 155 } 156 157 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a, 158 struct f2fs_sb_info *sbi, char *buf) 159 { 160 return sprintf(buf, "%u\n", sbi->current_reserved_blocks); 161 } 162 163 static ssize_t unusable_show(struct f2fs_attr *a, 164 struct f2fs_sb_info *sbi, char *buf) 165 { 166 block_t unusable; 167 168 if (test_opt(sbi, DISABLE_CHECKPOINT)) 169 unusable = sbi->unusable_block_count; 170 else 171 unusable = f2fs_get_unusable_blocks(sbi); 172 return sprintf(buf, "%llu\n", (unsigned long long)unusable); 173 } 174 175 static ssize_t encoding_show(struct f2fs_attr *a, 176 struct f2fs_sb_info *sbi, char *buf) 177 { 178 #ifdef CONFIG_UNICODE 179 struct super_block *sb = sbi->sb; 180 181 if (f2fs_sb_has_casefold(sbi)) 182 return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n", 183 sb->s_encoding->charset, 184 (sb->s_encoding->version >> 16) & 0xff, 185 (sb->s_encoding->version >> 8) & 0xff, 186 sb->s_encoding->version & 0xff); 187 #endif 188 return sprintf(buf, "(none)"); 189 } 190 191 static ssize_t mounted_time_sec_show(struct f2fs_attr *a, 192 struct f2fs_sb_info *sbi, char *buf) 193 { 194 return sprintf(buf, "%llu", SIT_I(sbi)->mounted_time); 195 } 196 197 #ifdef CONFIG_F2FS_STAT_FS 198 static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a, 199 struct f2fs_sb_info *sbi, char *buf) 200 { 201 struct f2fs_stat_info *si = F2FS_STAT(sbi); 202 203 return sprintf(buf, "%llu\n", 204 (unsigned long long)(si->tot_blks - 205 (si->bg_data_blks + si->bg_node_blks))); 206 } 207 208 static ssize_t moved_blocks_background_show(struct f2fs_attr *a, 209 struct f2fs_sb_info *sbi, char *buf) 210 { 211 struct f2fs_stat_info *si = F2FS_STAT(sbi); 212 213 return sprintf(buf, "%llu\n", 214 (unsigned long long)(si->bg_data_blks + si->bg_node_blks)); 215 } 216 217 static ssize_t avg_vblocks_show(struct f2fs_attr *a, 218 struct f2fs_sb_info *sbi, char *buf) 219 { 220 struct f2fs_stat_info *si = F2FS_STAT(sbi); 221 222 si->dirty_count = dirty_segments(sbi); 223 f2fs_update_sit_info(sbi); 224 return sprintf(buf, "%llu\n", (unsigned long long)(si->avg_vblocks)); 225 } 226 #endif 227 228 static ssize_t main_blkaddr_show(struct f2fs_attr *a, 229 struct f2fs_sb_info *sbi, char *buf) 230 { 231 return snprintf(buf, PAGE_SIZE, "%llu\n", 232 (unsigned long long)MAIN_BLKADDR(sbi)); 233 } 234 235 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 236 struct f2fs_sb_info *sbi, char *buf) 237 { 238 unsigned char *ptr = NULL; 239 unsigned int *ui; 240 241 ptr = __struct_ptr(sbi, a->struct_type); 242 if (!ptr) 243 return -EINVAL; 244 245 if (!strcmp(a->attr.name, "extension_list")) { 246 __u8 (*extlist)[F2FS_EXTENSION_LEN] = 247 sbi->raw_super->extension_list; 248 int cold_count = le32_to_cpu(sbi->raw_super->extension_count); 249 int hot_count = sbi->raw_super->hot_ext_count; 250 int len = 0, i; 251 252 len += scnprintf(buf + len, PAGE_SIZE - len, 253 "cold file extension:\n"); 254 for (i = 0; i < cold_count; i++) 255 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n", 256 extlist[i]); 257 258 len += scnprintf(buf + len, PAGE_SIZE - len, 259 "hot file extension:\n"); 260 for (i = cold_count; i < cold_count + hot_count; i++) 261 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n", 262 extlist[i]); 263 return len; 264 } 265 266 ui = (unsigned int *)(ptr + a->offset); 267 268 return sprintf(buf, "%u\n", *ui); 269 } 270 271 static ssize_t __sbi_store(struct f2fs_attr *a, 272 struct f2fs_sb_info *sbi, 273 const char *buf, size_t count) 274 { 275 unsigned char *ptr; 276 unsigned long t; 277 unsigned int *ui; 278 ssize_t ret; 279 280 ptr = __struct_ptr(sbi, a->struct_type); 281 if (!ptr) 282 return -EINVAL; 283 284 if (!strcmp(a->attr.name, "extension_list")) { 285 const char *name = strim((char *)buf); 286 bool set = true, hot; 287 288 if (!strncmp(name, "[h]", 3)) 289 hot = true; 290 else if (!strncmp(name, "[c]", 3)) 291 hot = false; 292 else 293 return -EINVAL; 294 295 name += 3; 296 297 if (*name == '!') { 298 name++; 299 set = false; 300 } 301 302 if (strlen(name) >= F2FS_EXTENSION_LEN) 303 return -EINVAL; 304 305 down_write(&sbi->sb_lock); 306 307 ret = f2fs_update_extension_list(sbi, name, hot, set); 308 if (ret) 309 goto out; 310 311 ret = f2fs_commit_super(sbi, false); 312 if (ret) 313 f2fs_update_extension_list(sbi, name, hot, !set); 314 out: 315 up_write(&sbi->sb_lock); 316 return ret ? ret : count; 317 } 318 319 ui = (unsigned int *)(ptr + a->offset); 320 321 ret = kstrtoul(skip_spaces(buf), 0, &t); 322 if (ret < 0) 323 return ret; 324 #ifdef CONFIG_F2FS_FAULT_INJECTION 325 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX)) 326 return -EINVAL; 327 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX) 328 return -EINVAL; 329 #endif 330 if (a->struct_type == RESERVED_BLOCKS) { 331 spin_lock(&sbi->stat_lock); 332 if (t > (unsigned long)(sbi->user_block_count - 333 F2FS_OPTION(sbi).root_reserved_blocks)) { 334 spin_unlock(&sbi->stat_lock); 335 return -EINVAL; 336 } 337 *ui = t; 338 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 339 sbi->user_block_count - valid_user_blocks(sbi)); 340 spin_unlock(&sbi->stat_lock); 341 return count; 342 } 343 344 if (!strcmp(a->attr.name, "discard_granularity")) { 345 if (t == 0 || t > MAX_PLIST_NUM) 346 return -EINVAL; 347 if (t == *ui) 348 return count; 349 *ui = t; 350 return count; 351 } 352 353 if (!strcmp(a->attr.name, "migration_granularity")) { 354 if (t == 0 || t > sbi->segs_per_sec) 355 return -EINVAL; 356 } 357 358 if (!strcmp(a->attr.name, "trim_sections")) 359 return -EINVAL; 360 361 if (!strcmp(a->attr.name, "gc_urgent")) { 362 if (t == 0) { 363 sbi->gc_mode = GC_NORMAL; 364 } else if (t == 1) { 365 sbi->gc_mode = GC_URGENT_HIGH; 366 if (sbi->gc_thread) { 367 sbi->gc_thread->gc_wake = 1; 368 wake_up_interruptible_all( 369 &sbi->gc_thread->gc_wait_queue_head); 370 wake_up_discard_thread(sbi, true); 371 } 372 } else if (t == 2) { 373 sbi->gc_mode = GC_URGENT_LOW; 374 } else { 375 return -EINVAL; 376 } 377 return count; 378 } 379 if (!strcmp(a->attr.name, "gc_idle")) { 380 if (t == GC_IDLE_CB) { 381 sbi->gc_mode = GC_IDLE_CB; 382 } else if (t == GC_IDLE_GREEDY) { 383 sbi->gc_mode = GC_IDLE_GREEDY; 384 } else if (t == GC_IDLE_AT) { 385 if (!sbi->am.atgc_enabled) 386 return -EINVAL; 387 sbi->gc_mode = GC_AT; 388 } else { 389 sbi->gc_mode = GC_NORMAL; 390 } 391 return count; 392 } 393 394 if (!strcmp(a->attr.name, "iostat_enable")) { 395 sbi->iostat_enable = !!t; 396 if (!sbi->iostat_enable) 397 f2fs_reset_iostat(sbi); 398 return count; 399 } 400 401 if (!strcmp(a->attr.name, "iostat_period_ms")) { 402 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS) 403 return -EINVAL; 404 spin_lock(&sbi->iostat_lock); 405 sbi->iostat_period_ms = (unsigned int)t; 406 spin_unlock(&sbi->iostat_lock); 407 return count; 408 } 409 410 *ui = (unsigned int)t; 411 412 return count; 413 } 414 415 static ssize_t f2fs_sbi_store(struct f2fs_attr *a, 416 struct f2fs_sb_info *sbi, 417 const char *buf, size_t count) 418 { 419 ssize_t ret; 420 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || 421 a->struct_type == GC_THREAD); 422 423 if (gc_entry) { 424 if (!down_read_trylock(&sbi->sb->s_umount)) 425 return -EAGAIN; 426 } 427 ret = __sbi_store(a, sbi, buf, count); 428 if (gc_entry) 429 up_read(&sbi->sb->s_umount); 430 431 return ret; 432 } 433 434 static ssize_t f2fs_attr_show(struct kobject *kobj, 435 struct attribute *attr, char *buf) 436 { 437 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 438 s_kobj); 439 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 440 441 return a->show ? a->show(a, sbi, buf) : 0; 442 } 443 444 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, 445 const char *buf, size_t len) 446 { 447 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 448 s_kobj); 449 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 450 451 return a->store ? a->store(a, sbi, buf, len) : 0; 452 } 453 454 static void f2fs_sb_release(struct kobject *kobj) 455 { 456 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 457 s_kobj); 458 complete(&sbi->s_kobj_unregister); 459 } 460 461 enum feat_id { 462 FEAT_CRYPTO = 0, 463 FEAT_BLKZONED, 464 FEAT_ATOMIC_WRITE, 465 FEAT_EXTRA_ATTR, 466 FEAT_PROJECT_QUOTA, 467 FEAT_INODE_CHECKSUM, 468 FEAT_FLEXIBLE_INLINE_XATTR, 469 FEAT_QUOTA_INO, 470 FEAT_INODE_CRTIME, 471 FEAT_LOST_FOUND, 472 FEAT_VERITY, 473 FEAT_SB_CHECKSUM, 474 FEAT_CASEFOLD, 475 FEAT_COMPRESSION, 476 FEAT_TEST_DUMMY_ENCRYPTION_V2, 477 }; 478 479 static ssize_t f2fs_feature_show(struct f2fs_attr *a, 480 struct f2fs_sb_info *sbi, char *buf) 481 { 482 switch (a->id) { 483 case FEAT_CRYPTO: 484 case FEAT_BLKZONED: 485 case FEAT_ATOMIC_WRITE: 486 case FEAT_EXTRA_ATTR: 487 case FEAT_PROJECT_QUOTA: 488 case FEAT_INODE_CHECKSUM: 489 case FEAT_FLEXIBLE_INLINE_XATTR: 490 case FEAT_QUOTA_INO: 491 case FEAT_INODE_CRTIME: 492 case FEAT_LOST_FOUND: 493 case FEAT_VERITY: 494 case FEAT_SB_CHECKSUM: 495 case FEAT_CASEFOLD: 496 case FEAT_COMPRESSION: 497 case FEAT_TEST_DUMMY_ENCRYPTION_V2: 498 return sprintf(buf, "supported\n"); 499 } 500 return 0; 501 } 502 503 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ 504 static struct f2fs_attr f2fs_attr_##_name = { \ 505 .attr = {.name = __stringify(_name), .mode = _mode }, \ 506 .show = _show, \ 507 .store = _store, \ 508 .struct_type = _struct_type, \ 509 .offset = _offset \ 510 } 511 512 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ 513 F2FS_ATTR_OFFSET(struct_type, name, 0644, \ 514 f2fs_sbi_show, f2fs_sbi_store, \ 515 offsetof(struct struct_name, elname)) 516 517 #define F2FS_GENERAL_RO_ATTR(name) \ 518 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) 519 520 #define F2FS_FEATURE_RO_ATTR(_name, _id) \ 521 static struct f2fs_attr f2fs_attr_##_name = { \ 522 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 523 .show = f2fs_feature_show, \ 524 .id = _id, \ 525 } 526 527 #define F2FS_STAT_ATTR(_struct_type, _struct_name, _name, _elname) \ 528 static struct f2fs_attr f2fs_attr_##_name = { \ 529 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 530 .show = f2fs_sbi_show, \ 531 .struct_type = _struct_type, \ 532 .offset = offsetof(struct _struct_name, _elname), \ 533 } 534 535 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time, 536 urgent_sleep_time); 537 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); 538 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); 539 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); 540 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode); 541 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode); 542 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); 543 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards); 544 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity); 545 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks); 546 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); 547 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); 548 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); 549 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); 550 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks); 551 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks); 552 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections); 553 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); 554 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); 555 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); 556 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); 557 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity); 558 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); 559 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); 560 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); 561 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval, 562 interval_time[DISCARD_TIME]); 563 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]); 564 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, 565 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); 566 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable); 567 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_period_ms, iostat_period_ms); 568 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra); 569 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold); 570 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); 571 #ifdef CONFIG_F2FS_FAULT_INJECTION 572 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); 573 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); 574 #endif 575 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, data_io_flag, data_io_flag); 576 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, node_io_flag, node_io_flag); 577 F2FS_GENERAL_RO_ATTR(dirty_segments); 578 F2FS_GENERAL_RO_ATTR(free_segments); 579 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); 580 F2FS_GENERAL_RO_ATTR(features); 581 F2FS_GENERAL_RO_ATTR(current_reserved_blocks); 582 F2FS_GENERAL_RO_ATTR(unusable); 583 F2FS_GENERAL_RO_ATTR(encoding); 584 F2FS_GENERAL_RO_ATTR(mounted_time_sec); 585 F2FS_GENERAL_RO_ATTR(main_blkaddr); 586 #ifdef CONFIG_F2FS_STAT_FS 587 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count); 588 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count); 589 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count); 590 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc); 591 F2FS_GENERAL_RO_ATTR(moved_blocks_background); 592 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground); 593 F2FS_GENERAL_RO_ATTR(avg_vblocks); 594 #endif 595 596 #ifdef CONFIG_FS_ENCRYPTION 597 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO); 598 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2, FEAT_TEST_DUMMY_ENCRYPTION_V2); 599 #endif 600 #ifdef CONFIG_BLK_DEV_ZONED 601 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED); 602 #endif 603 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE); 604 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR); 605 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA); 606 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM); 607 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR); 608 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO); 609 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME); 610 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND); 611 #ifdef CONFIG_FS_VERITY 612 F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY); 613 #endif 614 F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM); 615 F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD); 616 #ifdef CONFIG_F2FS_FS_COMPRESSION 617 F2FS_FEATURE_RO_ATTR(compression, FEAT_COMPRESSION); 618 #endif 619 620 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) 621 static struct attribute *f2fs_attrs[] = { 622 ATTR_LIST(gc_urgent_sleep_time), 623 ATTR_LIST(gc_min_sleep_time), 624 ATTR_LIST(gc_max_sleep_time), 625 ATTR_LIST(gc_no_gc_sleep_time), 626 ATTR_LIST(gc_idle), 627 ATTR_LIST(gc_urgent), 628 ATTR_LIST(reclaim_segments), 629 ATTR_LIST(main_blkaddr), 630 ATTR_LIST(max_small_discards), 631 ATTR_LIST(discard_granularity), 632 ATTR_LIST(batched_trim_sections), 633 ATTR_LIST(ipu_policy), 634 ATTR_LIST(min_ipu_util), 635 ATTR_LIST(min_fsync_blocks), 636 ATTR_LIST(min_seq_blocks), 637 ATTR_LIST(min_hot_blocks), 638 ATTR_LIST(min_ssr_sections), 639 ATTR_LIST(max_victim_search), 640 ATTR_LIST(migration_granularity), 641 ATTR_LIST(dir_level), 642 ATTR_LIST(ram_thresh), 643 ATTR_LIST(ra_nid_pages), 644 ATTR_LIST(dirty_nats_ratio), 645 ATTR_LIST(cp_interval), 646 ATTR_LIST(idle_interval), 647 ATTR_LIST(discard_idle_interval), 648 ATTR_LIST(gc_idle_interval), 649 ATTR_LIST(umount_discard_timeout), 650 ATTR_LIST(iostat_enable), 651 ATTR_LIST(iostat_period_ms), 652 ATTR_LIST(readdir_ra), 653 ATTR_LIST(gc_pin_file_thresh), 654 ATTR_LIST(extension_list), 655 #ifdef CONFIG_F2FS_FAULT_INJECTION 656 ATTR_LIST(inject_rate), 657 ATTR_LIST(inject_type), 658 #endif 659 ATTR_LIST(data_io_flag), 660 ATTR_LIST(node_io_flag), 661 ATTR_LIST(dirty_segments), 662 ATTR_LIST(free_segments), 663 ATTR_LIST(unusable), 664 ATTR_LIST(lifetime_write_kbytes), 665 ATTR_LIST(features), 666 ATTR_LIST(reserved_blocks), 667 ATTR_LIST(current_reserved_blocks), 668 ATTR_LIST(encoding), 669 ATTR_LIST(mounted_time_sec), 670 #ifdef CONFIG_F2FS_STAT_FS 671 ATTR_LIST(cp_foreground_calls), 672 ATTR_LIST(cp_background_calls), 673 ATTR_LIST(gc_foreground_calls), 674 ATTR_LIST(gc_background_calls), 675 ATTR_LIST(moved_blocks_foreground), 676 ATTR_LIST(moved_blocks_background), 677 ATTR_LIST(avg_vblocks), 678 #endif 679 NULL, 680 }; 681 ATTRIBUTE_GROUPS(f2fs); 682 683 static struct attribute *f2fs_feat_attrs[] = { 684 #ifdef CONFIG_FS_ENCRYPTION 685 ATTR_LIST(encryption), 686 ATTR_LIST(test_dummy_encryption_v2), 687 #endif 688 #ifdef CONFIG_BLK_DEV_ZONED 689 ATTR_LIST(block_zoned), 690 #endif 691 ATTR_LIST(atomic_write), 692 ATTR_LIST(extra_attr), 693 ATTR_LIST(project_quota), 694 ATTR_LIST(inode_checksum), 695 ATTR_LIST(flexible_inline_xattr), 696 ATTR_LIST(quota_ino), 697 ATTR_LIST(inode_crtime), 698 ATTR_LIST(lost_found), 699 #ifdef CONFIG_FS_VERITY 700 ATTR_LIST(verity), 701 #endif 702 ATTR_LIST(sb_checksum), 703 ATTR_LIST(casefold), 704 #ifdef CONFIG_F2FS_FS_COMPRESSION 705 ATTR_LIST(compression), 706 #endif 707 NULL, 708 }; 709 ATTRIBUTE_GROUPS(f2fs_feat); 710 711 static const struct sysfs_ops f2fs_attr_ops = { 712 .show = f2fs_attr_show, 713 .store = f2fs_attr_store, 714 }; 715 716 static struct kobj_type f2fs_sb_ktype = { 717 .default_groups = f2fs_groups, 718 .sysfs_ops = &f2fs_attr_ops, 719 .release = f2fs_sb_release, 720 }; 721 722 static struct kobj_type f2fs_ktype = { 723 .sysfs_ops = &f2fs_attr_ops, 724 }; 725 726 static struct kset f2fs_kset = { 727 .kobj = {.ktype = &f2fs_ktype}, 728 }; 729 730 static struct kobj_type f2fs_feat_ktype = { 731 .default_groups = f2fs_feat_groups, 732 .sysfs_ops = &f2fs_attr_ops, 733 }; 734 735 static struct kobject f2fs_feat = { 736 .kset = &f2fs_kset, 737 }; 738 739 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 740 void *offset) 741 { 742 struct super_block *sb = seq->private; 743 struct f2fs_sb_info *sbi = F2FS_SB(sb); 744 unsigned int total_segs = 745 le32_to_cpu(sbi->raw_super->segment_count_main); 746 int i; 747 748 seq_puts(seq, "format: segment_type|valid_blocks\n" 749 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 750 751 for (i = 0; i < total_segs; i++) { 752 struct seg_entry *se = get_seg_entry(sbi, i); 753 754 if ((i % 10) == 0) 755 seq_printf(seq, "%-10d", i); 756 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); 757 if ((i % 10) == 9 || i == (total_segs - 1)) 758 seq_putc(seq, '\n'); 759 else 760 seq_putc(seq, ' '); 761 } 762 763 return 0; 764 } 765 766 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 767 void *offset) 768 { 769 struct super_block *sb = seq->private; 770 struct f2fs_sb_info *sbi = F2FS_SB(sb); 771 unsigned int total_segs = 772 le32_to_cpu(sbi->raw_super->segment_count_main); 773 int i, j; 774 775 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" 776 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 777 778 for (i = 0; i < total_segs; i++) { 779 struct seg_entry *se = get_seg_entry(sbi, i); 780 781 seq_printf(seq, "%-10d", i); 782 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); 783 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 784 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 785 seq_putc(seq, '\n'); 786 } 787 return 0; 788 } 789 790 void f2fs_record_iostat(struct f2fs_sb_info *sbi) 791 { 792 unsigned long long iostat_diff[NR_IO_TYPE]; 793 int i; 794 795 if (time_is_after_jiffies(sbi->iostat_next_period)) 796 return; 797 798 /* Need double check under the lock */ 799 spin_lock(&sbi->iostat_lock); 800 if (time_is_after_jiffies(sbi->iostat_next_period)) { 801 spin_unlock(&sbi->iostat_lock); 802 return; 803 } 804 sbi->iostat_next_period = jiffies + 805 msecs_to_jiffies(sbi->iostat_period_ms); 806 807 for (i = 0; i < NR_IO_TYPE; i++) { 808 iostat_diff[i] = sbi->rw_iostat[i] - 809 sbi->prev_rw_iostat[i]; 810 sbi->prev_rw_iostat[i] = sbi->rw_iostat[i]; 811 } 812 spin_unlock(&sbi->iostat_lock); 813 814 trace_f2fs_iostat(sbi, iostat_diff); 815 } 816 817 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq, 818 void *offset) 819 { 820 struct super_block *sb = seq->private; 821 struct f2fs_sb_info *sbi = F2FS_SB(sb); 822 time64_t now = ktime_get_real_seconds(); 823 824 if (!sbi->iostat_enable) 825 return 0; 826 827 seq_printf(seq, "time: %-16llu\n", now); 828 829 /* print app write IOs */ 830 seq_puts(seq, "[WRITE]\n"); 831 seq_printf(seq, "app buffered: %-16llu\n", 832 sbi->rw_iostat[APP_BUFFERED_IO]); 833 seq_printf(seq, "app direct: %-16llu\n", 834 sbi->rw_iostat[APP_DIRECT_IO]); 835 seq_printf(seq, "app mapped: %-16llu\n", 836 sbi->rw_iostat[APP_MAPPED_IO]); 837 838 /* print fs write IOs */ 839 seq_printf(seq, "fs data: %-16llu\n", 840 sbi->rw_iostat[FS_DATA_IO]); 841 seq_printf(seq, "fs node: %-16llu\n", 842 sbi->rw_iostat[FS_NODE_IO]); 843 seq_printf(seq, "fs meta: %-16llu\n", 844 sbi->rw_iostat[FS_META_IO]); 845 seq_printf(seq, "fs gc data: %-16llu\n", 846 sbi->rw_iostat[FS_GC_DATA_IO]); 847 seq_printf(seq, "fs gc node: %-16llu\n", 848 sbi->rw_iostat[FS_GC_NODE_IO]); 849 seq_printf(seq, "fs cp data: %-16llu\n", 850 sbi->rw_iostat[FS_CP_DATA_IO]); 851 seq_printf(seq, "fs cp node: %-16llu\n", 852 sbi->rw_iostat[FS_CP_NODE_IO]); 853 seq_printf(seq, "fs cp meta: %-16llu\n", 854 sbi->rw_iostat[FS_CP_META_IO]); 855 856 /* print app read IOs */ 857 seq_puts(seq, "[READ]\n"); 858 seq_printf(seq, "app buffered: %-16llu\n", 859 sbi->rw_iostat[APP_BUFFERED_READ_IO]); 860 seq_printf(seq, "app direct: %-16llu\n", 861 sbi->rw_iostat[APP_DIRECT_READ_IO]); 862 seq_printf(seq, "app mapped: %-16llu\n", 863 sbi->rw_iostat[APP_MAPPED_READ_IO]); 864 865 /* print fs read IOs */ 866 seq_printf(seq, "fs data: %-16llu\n", 867 sbi->rw_iostat[FS_DATA_READ_IO]); 868 seq_printf(seq, "fs gc data: %-16llu\n", 869 sbi->rw_iostat[FS_GDATA_READ_IO]); 870 seq_printf(seq, "fs compr_data: %-16llu\n", 871 sbi->rw_iostat[FS_CDATA_READ_IO]); 872 seq_printf(seq, "fs node: %-16llu\n", 873 sbi->rw_iostat[FS_NODE_READ_IO]); 874 seq_printf(seq, "fs meta: %-16llu\n", 875 sbi->rw_iostat[FS_META_READ_IO]); 876 877 /* print other IOs */ 878 seq_puts(seq, "[OTHER]\n"); 879 seq_printf(seq, "fs discard: %-16llu\n", 880 sbi->rw_iostat[FS_DISCARD]); 881 882 return 0; 883 } 884 885 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 886 void *offset) 887 { 888 struct super_block *sb = seq->private; 889 struct f2fs_sb_info *sbi = F2FS_SB(sb); 890 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 891 int i; 892 893 seq_puts(seq, "format: victim_secmap bitmaps\n"); 894 895 for (i = 0; i < MAIN_SECS(sbi); i++) { 896 if ((i % 10) == 0) 897 seq_printf(seq, "%-10d", i); 898 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 899 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 900 seq_putc(seq, '\n'); 901 else 902 seq_putc(seq, ' '); 903 } 904 return 0; 905 } 906 907 int __init f2fs_init_sysfs(void) 908 { 909 int ret; 910 911 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 912 f2fs_kset.kobj.parent = fs_kobj; 913 ret = kset_register(&f2fs_kset); 914 if (ret) 915 return ret; 916 917 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 918 NULL, "features"); 919 if (ret) { 920 kobject_put(&f2fs_feat); 921 kset_unregister(&f2fs_kset); 922 } else { 923 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 924 } 925 return ret; 926 } 927 928 void f2fs_exit_sysfs(void) 929 { 930 kobject_put(&f2fs_feat); 931 kset_unregister(&f2fs_kset); 932 remove_proc_entry("fs/f2fs", NULL); 933 f2fs_proc_root = NULL; 934 } 935 936 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 937 { 938 struct super_block *sb = sbi->sb; 939 int err; 940 941 sbi->s_kobj.kset = &f2fs_kset; 942 init_completion(&sbi->s_kobj_unregister); 943 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 944 "%s", sb->s_id); 945 if (err) { 946 kobject_put(&sbi->s_kobj); 947 wait_for_completion(&sbi->s_kobj_unregister); 948 return err; 949 } 950 951 if (f2fs_proc_root) 952 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 953 954 if (sbi->s_proc) { 955 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc, 956 segment_info_seq_show, sb); 957 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc, 958 segment_bits_seq_show, sb); 959 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc, 960 iostat_info_seq_show, sb); 961 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc, 962 victim_bits_seq_show, sb); 963 } 964 return 0; 965 } 966 967 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 968 { 969 if (sbi->s_proc) { 970 remove_proc_entry("iostat_info", sbi->s_proc); 971 remove_proc_entry("segment_info", sbi->s_proc); 972 remove_proc_entry("segment_bits", sbi->s_proc); 973 remove_proc_entry("victim_bits", sbi->s_proc); 974 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root); 975 } 976 kobject_del(&sbi->s_kobj); 977 kobject_put(&sbi->s_kobj); 978 wait_for_completion(&sbi->s_kobj_unregister); 979 } 980