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