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