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