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