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