1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * f2fs debugging statistics 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 * Copyright (c) 2012 Linux Foundation 8 * Copyright (c) 2012 Greg Kroah-Hartman <gregkh@linuxfoundation.org> 9 */ 10 11 #include <linux/fs.h> 12 #include <linux/backing-dev.h> 13 #include <linux/f2fs_fs.h> 14 #include <linux/blkdev.h> 15 #include <linux/debugfs.h> 16 #include <linux/seq_file.h> 17 18 #include "f2fs.h" 19 #include "node.h" 20 #include "segment.h" 21 #include "gc.h" 22 23 static LIST_HEAD(f2fs_stat_list); 24 static DEFINE_RAW_SPINLOCK(f2fs_stat_lock); 25 #ifdef CONFIG_DEBUG_FS 26 static struct dentry *f2fs_debugfs_root; 27 #endif 28 29 /* 30 * This function calculates BDF of every segments 31 */ 32 void f2fs_update_sit_info(struct f2fs_sb_info *sbi) 33 { 34 struct f2fs_stat_info *si = F2FS_STAT(sbi); 35 unsigned long long blks_per_sec, hblks_per_sec, total_vblocks; 36 unsigned long long bimodal, dist; 37 unsigned int segno, vblocks; 38 int ndirty = 0; 39 40 bimodal = 0; 41 total_vblocks = 0; 42 blks_per_sec = CAP_BLKS_PER_SEC(sbi); 43 hblks_per_sec = blks_per_sec / 2; 44 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { 45 vblocks = get_valid_blocks(sbi, segno, true); 46 dist = abs(vblocks - hblks_per_sec); 47 bimodal += dist * dist; 48 49 if (vblocks > 0 && vblocks < blks_per_sec) { 50 total_vblocks += vblocks; 51 ndirty++; 52 } 53 } 54 dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100); 55 si->bimodal = div64_u64(bimodal, dist); 56 if (si->dirty_count) 57 si->avg_vblocks = div_u64(total_vblocks, ndirty); 58 else 59 si->avg_vblocks = 0; 60 } 61 62 #ifdef CONFIG_DEBUG_FS 63 static void update_general_status(struct f2fs_sb_info *sbi) 64 { 65 struct f2fs_stat_info *si = F2FS_STAT(sbi); 66 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 67 int i; 68 69 /* these will be changed if online resize is done */ 70 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main); 71 si->main_area_sections = le32_to_cpu(raw_super->section_count); 72 si->main_area_zones = si->main_area_sections / 73 le32_to_cpu(raw_super->secs_per_zone); 74 75 /* general extent cache stats */ 76 for (i = 0; i < NR_EXTENT_CACHES; i++) { 77 struct extent_tree_info *eti = &sbi->extent_tree[i]; 78 79 si->hit_cached[i] = atomic64_read(&sbi->read_hit_cached[i]); 80 si->hit_rbtree[i] = atomic64_read(&sbi->read_hit_rbtree[i]); 81 si->total_ext[i] = atomic64_read(&sbi->total_hit_ext[i]); 82 si->hit_total[i] = si->hit_cached[i] + si->hit_rbtree[i]; 83 si->ext_tree[i] = atomic_read(&eti->total_ext_tree); 84 si->zombie_tree[i] = atomic_read(&eti->total_zombie_tree); 85 si->ext_node[i] = atomic_read(&eti->total_ext_node); 86 } 87 /* read extent_cache only */ 88 si->hit_largest = atomic64_read(&sbi->read_hit_largest); 89 si->hit_total[EX_READ] += si->hit_largest; 90 91 /* block age extent_cache only */ 92 si->allocated_data_blocks = atomic64_read(&sbi->allocated_data_blocks); 93 94 /* validation check of the segment numbers */ 95 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES); 96 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS); 97 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META); 98 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA); 99 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA); 100 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA); 101 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE]; 102 si->ndirty_files = sbi->ndirty_inode[FILE_INODE]; 103 si->nquota_files = sbi->nquota_files; 104 si->ndirty_all = sbi->ndirty_inode[DIRTY_META]; 105 si->aw_cnt = atomic_read(&sbi->atomic_files); 106 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt); 107 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ); 108 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE); 109 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA); 110 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA); 111 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA); 112 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE); 113 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META); 114 if (SM_I(sbi)->fcc_info) { 115 si->nr_flushed = 116 atomic_read(&SM_I(sbi)->fcc_info->issued_flush); 117 si->nr_flushing = 118 atomic_read(&SM_I(sbi)->fcc_info->queued_flush); 119 si->flush_list_empty = 120 llist_empty(&SM_I(sbi)->fcc_info->issue_list); 121 } 122 if (SM_I(sbi)->dcc_info) { 123 si->nr_discarded = 124 atomic_read(&SM_I(sbi)->dcc_info->issued_discard); 125 si->nr_discarding = 126 atomic_read(&SM_I(sbi)->dcc_info->queued_discard); 127 si->nr_discard_cmd = 128 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); 129 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks; 130 } 131 si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt); 132 si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt); 133 si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt); 134 spin_lock(&sbi->cprc_info.stat_lock); 135 si->cur_ckpt_time = sbi->cprc_info.cur_time; 136 si->peak_ckpt_time = sbi->cprc_info.peak_time; 137 spin_unlock(&sbi->cprc_info.stat_lock); 138 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg; 139 si->rsvd_segs = reserved_segments(sbi); 140 si->overp_segs = overprovision_segments(sbi); 141 si->valid_count = valid_user_blocks(sbi); 142 si->discard_blks = discard_blocks(sbi); 143 si->valid_node_count = valid_node_count(sbi); 144 si->valid_inode_count = valid_inode_count(sbi); 145 si->inline_xattr = atomic_read(&sbi->inline_xattr); 146 si->inline_inode = atomic_read(&sbi->inline_inode); 147 si->inline_dir = atomic_read(&sbi->inline_dir); 148 si->compr_inode = atomic_read(&sbi->compr_inode); 149 si->swapfile_inode = atomic_read(&sbi->swapfile_inode); 150 si->compr_blocks = atomic64_read(&sbi->compr_blocks); 151 si->append = sbi->im[APPEND_INO].ino_num; 152 si->update = sbi->im[UPDATE_INO].ino_num; 153 si->orphans = sbi->im[ORPHAN_INO].ino_num; 154 si->utilization = utilization(sbi); 155 156 si->free_segs = free_segments(sbi); 157 si->free_secs = free_sections(sbi); 158 si->prefree_count = prefree_segments(sbi); 159 si->dirty_count = dirty_segments(sbi); 160 if (sbi->node_inode) 161 si->node_pages = NODE_MAPPING(sbi)->nrpages; 162 if (sbi->meta_inode) 163 si->meta_pages = META_MAPPING(sbi)->nrpages; 164 #ifdef CONFIG_F2FS_FS_COMPRESSION 165 if (sbi->compress_inode) { 166 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages; 167 si->compress_page_hit = atomic_read(&sbi->compress_page_hit); 168 } 169 #endif 170 si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT]; 171 si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT]; 172 si->sits = MAIN_SEGS(sbi); 173 si->dirty_sits = SIT_I(sbi)->dirty_sentries; 174 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID]; 175 si->avail_nids = NM_I(sbi)->available_nids; 176 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID]; 177 si->io_skip_bggc = sbi->io_skip_bggc; 178 si->other_skip_bggc = sbi->other_skip_bggc; 179 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg) 180 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 181 / 2; 182 si->util_valid = (int)(written_block_count(sbi) >> 183 sbi->log_blocks_per_seg) 184 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 185 / 2; 186 si->util_invalid = 50 - si->util_free - si->util_valid; 187 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { 188 struct curseg_info *curseg = CURSEG_I(sbi, i); 189 190 si->curseg[i] = curseg->segno; 191 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno); 192 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]); 193 } 194 195 for (i = META_CP; i < META_MAX; i++) 196 si->meta_count[i] = atomic_read(&sbi->meta_count[i]); 197 198 for (i = 0; i < NO_CHECK_TYPE; i++) { 199 si->dirty_seg[i] = 0; 200 si->full_seg[i] = 0; 201 si->valid_blks[i] = 0; 202 } 203 204 for (i = 0; i < MAIN_SEGS(sbi); i++) { 205 int blks = get_seg_entry(sbi, i)->valid_blocks; 206 int type = get_seg_entry(sbi, i)->type; 207 208 if (!blks) 209 continue; 210 211 if (blks == sbi->blocks_per_seg) 212 si->full_seg[type]++; 213 else 214 si->dirty_seg[type]++; 215 si->valid_blks[type] += blks; 216 } 217 218 for (i = 0; i < 2; i++) { 219 si->segment_count[i] = sbi->segment_count[i]; 220 si->block_count[i] = sbi->block_count[i]; 221 } 222 223 si->inplace_count = atomic_read(&sbi->inplace_count); 224 } 225 226 /* 227 * This function calculates memory footprint. 228 */ 229 static void update_mem_info(struct f2fs_sb_info *sbi) 230 { 231 struct f2fs_stat_info *si = F2FS_STAT(sbi); 232 int i; 233 234 if (si->base_mem) 235 goto get_cache; 236 237 /* build stat */ 238 si->base_mem = sizeof(struct f2fs_stat_info); 239 240 /* build superblock */ 241 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize; 242 si->base_mem += 2 * sizeof(struct f2fs_inode_info); 243 si->base_mem += sizeof(*sbi->ckpt); 244 245 /* build sm */ 246 si->base_mem += sizeof(struct f2fs_sm_info); 247 248 /* build sit */ 249 si->base_mem += sizeof(struct sit_info); 250 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry); 251 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 252 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 253 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 254 si->base_mem += SIT_VBLOCK_MAP_SIZE; 255 if (__is_large_section(sbi)) 256 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry); 257 si->base_mem += __bitmap_size(sbi, SIT_BITMAP); 258 259 /* build free segmap */ 260 si->base_mem += sizeof(struct free_segmap_info); 261 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 262 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 263 264 /* build curseg */ 265 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE; 266 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE; 267 268 /* build dirty segmap */ 269 si->base_mem += sizeof(struct dirty_seglist_info); 270 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi)); 271 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 272 273 /* build nm */ 274 si->base_mem += sizeof(struct f2fs_nm_info); 275 si->base_mem += __bitmap_size(sbi, NAT_BITMAP); 276 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS); 277 si->base_mem += NM_I(sbi)->nat_blocks * 278 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK); 279 si->base_mem += NM_I(sbi)->nat_blocks / 8; 280 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short); 281 282 get_cache: 283 si->cache_mem = 0; 284 285 /* build gc */ 286 if (sbi->gc_thread) 287 si->cache_mem += sizeof(struct f2fs_gc_kthread); 288 289 /* build merge flush thread */ 290 if (SM_I(sbi)->fcc_info) 291 si->cache_mem += sizeof(struct flush_cmd_control); 292 if (SM_I(sbi)->dcc_info) { 293 si->cache_mem += sizeof(struct discard_cmd_control); 294 si->cache_mem += sizeof(struct discard_cmd) * 295 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); 296 } 297 298 /* free nids */ 299 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] + 300 NM_I(sbi)->nid_cnt[PREALLOC_NID]) * 301 sizeof(struct free_nid); 302 si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] * 303 sizeof(struct nat_entry); 304 si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] * 305 sizeof(struct nat_entry_set); 306 for (i = 0; i < MAX_INO_ENTRY; i++) 307 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry); 308 309 for (i = 0; i < NR_EXTENT_CACHES; i++) { 310 struct extent_tree_info *eti = &sbi->extent_tree[i]; 311 312 si->ext_mem[i] = atomic_read(&eti->total_ext_tree) * 313 sizeof(struct extent_tree); 314 si->ext_mem[i] += atomic_read(&eti->total_ext_node) * 315 sizeof(struct extent_node); 316 si->cache_mem += si->ext_mem[i]; 317 } 318 319 si->page_mem = 0; 320 if (sbi->node_inode) { 321 unsigned long npages = NODE_MAPPING(sbi)->nrpages; 322 323 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 324 } 325 if (sbi->meta_inode) { 326 unsigned long npages = META_MAPPING(sbi)->nrpages; 327 328 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 329 } 330 #ifdef CONFIG_F2FS_FS_COMPRESSION 331 if (sbi->compress_inode) { 332 unsigned long npages = COMPRESS_MAPPING(sbi)->nrpages; 333 334 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 335 } 336 #endif 337 } 338 339 static char *s_flag[] = { 340 [SBI_IS_DIRTY] = " fs_dirty", 341 [SBI_IS_CLOSE] = " closing", 342 [SBI_NEED_FSCK] = " need_fsck", 343 [SBI_POR_DOING] = " recovering", 344 [SBI_NEED_SB_WRITE] = " sb_dirty", 345 [SBI_NEED_CP] = " need_cp", 346 [SBI_IS_SHUTDOWN] = " shutdown", 347 [SBI_IS_RECOVERED] = " recovered", 348 [SBI_CP_DISABLED] = " cp_disabled", 349 [SBI_CP_DISABLED_QUICK] = " cp_disabled_quick", 350 [SBI_QUOTA_NEED_FLUSH] = " quota_need_flush", 351 [SBI_QUOTA_SKIP_FLUSH] = " quota_skip_flush", 352 [SBI_QUOTA_NEED_REPAIR] = " quota_need_repair", 353 [SBI_IS_RESIZEFS] = " resizefs", 354 [SBI_IS_FREEZING] = " freezefs", 355 }; 356 357 static int stat_show(struct seq_file *s, void *v) 358 { 359 struct f2fs_stat_info *si; 360 int i = 0, j = 0; 361 unsigned long flags; 362 363 raw_spin_lock_irqsave(&f2fs_stat_lock, flags); 364 list_for_each_entry(si, &f2fs_stat_list, stat_list) { 365 update_general_status(si->sbi); 366 367 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n", 368 si->sbi->sb->s_bdev, i++, 369 f2fs_readonly(si->sbi->sb) ? "RO" : "RW", 370 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ? 371 "Disabled" : (f2fs_cp_error(si->sbi) ? "Error" : "Good")); 372 if (si->sbi->s_flag) { 373 seq_puts(s, "[SBI:"); 374 for_each_set_bit(j, &si->sbi->s_flag, 32) 375 seq_puts(s, s_flag[j]); 376 seq_puts(s, "]\n"); 377 } 378 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ", 379 si->sit_area_segs, si->nat_area_segs); 380 seq_printf(s, "[SSA: %d] [MAIN: %d", 381 si->ssa_area_segs, si->main_area_segs); 382 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n", 383 si->overp_segs, si->rsvd_segs); 384 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n", 385 ktime_get_boottime_seconds(), 386 SIT_I(si->sbi)->mounted_time); 387 if (test_opt(si->sbi, DISCARD)) 388 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n", 389 si->utilization, si->valid_count, si->discard_blks); 390 else 391 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n", 392 si->utilization, si->valid_count); 393 394 seq_printf(s, " - Node: %u (Inode: %u, ", 395 si->valid_node_count, si->valid_inode_count); 396 seq_printf(s, "Other: %u)\n - Data: %u\n", 397 si->valid_node_count - si->valid_inode_count, 398 si->valid_count - si->valid_node_count); 399 seq_printf(s, " - Inline_xattr Inode: %u\n", 400 si->inline_xattr); 401 seq_printf(s, " - Inline_data Inode: %u\n", 402 si->inline_inode); 403 seq_printf(s, " - Inline_dentry Inode: %u\n", 404 si->inline_dir); 405 seq_printf(s, " - Compressed Inode: %u, Blocks: %llu\n", 406 si->compr_inode, si->compr_blocks); 407 seq_printf(s, " - Swapfile Inode: %u\n", 408 si->swapfile_inode); 409 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n", 410 si->orphans, si->append, si->update); 411 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n", 412 si->main_area_segs, si->main_area_sections, 413 si->main_area_zones); 414 seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n", 415 "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk"); 416 seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n", 417 si->curseg[CURSEG_COLD_DATA], 418 si->cursec[CURSEG_COLD_DATA], 419 si->curzone[CURSEG_COLD_DATA], 420 si->dirty_seg[CURSEG_COLD_DATA], 421 si->full_seg[CURSEG_COLD_DATA], 422 si->valid_blks[CURSEG_COLD_DATA]); 423 seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n", 424 si->curseg[CURSEG_WARM_DATA], 425 si->cursec[CURSEG_WARM_DATA], 426 si->curzone[CURSEG_WARM_DATA], 427 si->dirty_seg[CURSEG_WARM_DATA], 428 si->full_seg[CURSEG_WARM_DATA], 429 si->valid_blks[CURSEG_WARM_DATA]); 430 seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n", 431 si->curseg[CURSEG_HOT_DATA], 432 si->cursec[CURSEG_HOT_DATA], 433 si->curzone[CURSEG_HOT_DATA], 434 si->dirty_seg[CURSEG_HOT_DATA], 435 si->full_seg[CURSEG_HOT_DATA], 436 si->valid_blks[CURSEG_HOT_DATA]); 437 seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n", 438 si->curseg[CURSEG_HOT_NODE], 439 si->cursec[CURSEG_HOT_NODE], 440 si->curzone[CURSEG_HOT_NODE], 441 si->dirty_seg[CURSEG_HOT_NODE], 442 si->full_seg[CURSEG_HOT_NODE], 443 si->valid_blks[CURSEG_HOT_NODE]); 444 seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n", 445 si->curseg[CURSEG_WARM_NODE], 446 si->cursec[CURSEG_WARM_NODE], 447 si->curzone[CURSEG_WARM_NODE], 448 si->dirty_seg[CURSEG_WARM_NODE], 449 si->full_seg[CURSEG_WARM_NODE], 450 si->valid_blks[CURSEG_WARM_NODE]); 451 seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n", 452 si->curseg[CURSEG_COLD_NODE], 453 si->cursec[CURSEG_COLD_NODE], 454 si->curzone[CURSEG_COLD_NODE], 455 si->dirty_seg[CURSEG_COLD_NODE], 456 si->full_seg[CURSEG_COLD_NODE], 457 si->valid_blks[CURSEG_COLD_NODE]); 458 seq_printf(s, " - Pinned file: %8d %8d %8d\n", 459 si->curseg[CURSEG_COLD_DATA_PINNED], 460 si->cursec[CURSEG_COLD_DATA_PINNED], 461 si->curzone[CURSEG_COLD_DATA_PINNED]); 462 seq_printf(s, " - ATGC data: %8d %8d %8d\n", 463 si->curseg[CURSEG_ALL_DATA_ATGC], 464 si->cursec[CURSEG_ALL_DATA_ATGC], 465 si->curzone[CURSEG_ALL_DATA_ATGC]); 466 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n", 467 si->main_area_segs - si->dirty_count - 468 si->prefree_count - si->free_segs, 469 si->dirty_count); 470 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n", 471 si->prefree_count, si->free_segs, si->free_secs); 472 seq_printf(s, "CP calls: %d (BG: %d)\n", 473 si->cp_count, si->bg_cp_count); 474 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]); 475 seq_printf(s, " - sit blocks : %u\n", 476 si->meta_count[META_SIT]); 477 seq_printf(s, " - nat blocks : %u\n", 478 si->meta_count[META_NAT]); 479 seq_printf(s, " - ssa blocks : %u\n", 480 si->meta_count[META_SSA]); 481 seq_puts(s, "CP merge:\n"); 482 seq_printf(s, " - Queued : %4d\n", si->nr_queued_ckpt); 483 seq_printf(s, " - Issued : %4d\n", si->nr_issued_ckpt); 484 seq_printf(s, " - Total : %4d\n", si->nr_total_ckpt); 485 seq_printf(s, " - Cur time : %4d(ms)\n", si->cur_ckpt_time); 486 seq_printf(s, " - Peak time : %4d(ms)\n", si->peak_ckpt_time); 487 seq_printf(s, "GC calls: %d (BG: %d)\n", 488 si->call_count, si->bg_gc); 489 seq_printf(s, " - data segments : %d (%d)\n", 490 si->data_segs, si->bg_data_segs); 491 seq_printf(s, " - node segments : %d (%d)\n", 492 si->node_segs, si->bg_node_segs); 493 seq_puts(s, " - Reclaimed segs :\n"); 494 seq_printf(s, " - Normal : %d\n", si->sbi->gc_reclaimed_segs[GC_NORMAL]); 495 seq_printf(s, " - Idle CB : %d\n", si->sbi->gc_reclaimed_segs[GC_IDLE_CB]); 496 seq_printf(s, " - Idle Greedy : %d\n", 497 si->sbi->gc_reclaimed_segs[GC_IDLE_GREEDY]); 498 seq_printf(s, " - Idle AT : %d\n", si->sbi->gc_reclaimed_segs[GC_IDLE_AT]); 499 seq_printf(s, " - Urgent High : %d\n", 500 si->sbi->gc_reclaimed_segs[GC_URGENT_HIGH]); 501 seq_printf(s, " - Urgent Mid : %d\n", si->sbi->gc_reclaimed_segs[GC_URGENT_MID]); 502 seq_printf(s, " - Urgent Low : %d\n", si->sbi->gc_reclaimed_segs[GC_URGENT_LOW]); 503 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks, 504 si->bg_data_blks + si->bg_node_blks); 505 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks, 506 si->bg_data_blks); 507 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks, 508 si->bg_node_blks); 509 seq_printf(s, "BG skip : IO: %u, Other: %u\n", 510 si->io_skip_bggc, si->other_skip_bggc); 511 seq_puts(s, "\nExtent Cache (Read):\n"); 512 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n", 513 si->hit_largest, si->hit_cached[EX_READ], 514 si->hit_rbtree[EX_READ]); 515 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n", 516 !si->total_ext[EX_READ] ? 0 : 517 div64_u64(si->hit_total[EX_READ] * 100, 518 si->total_ext[EX_READ]), 519 si->hit_total[EX_READ], si->total_ext[EX_READ]); 520 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n", 521 si->ext_tree[EX_READ], si->zombie_tree[EX_READ], 522 si->ext_node[EX_READ]); 523 seq_puts(s, "\nExtent Cache (Block Age):\n"); 524 seq_printf(s, " - Allocated Data Blocks: %llu\n", 525 si->allocated_data_blocks); 526 seq_printf(s, " - Hit Count: L1:%llu L2:%llu\n", 527 si->hit_cached[EX_BLOCK_AGE], 528 si->hit_rbtree[EX_BLOCK_AGE]); 529 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n", 530 !si->total_ext[EX_BLOCK_AGE] ? 0 : 531 div64_u64(si->hit_total[EX_BLOCK_AGE] * 100, 532 si->total_ext[EX_BLOCK_AGE]), 533 si->hit_total[EX_BLOCK_AGE], 534 si->total_ext[EX_BLOCK_AGE]); 535 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n", 536 si->ext_tree[EX_BLOCK_AGE], 537 si->zombie_tree[EX_BLOCK_AGE], 538 si->ext_node[EX_BLOCK_AGE]); 539 seq_puts(s, "\nBalancing F2FS Async:\n"); 540 seq_printf(s, " - DIO (R: %4d, W: %4d)\n", 541 si->nr_dio_read, si->nr_dio_write); 542 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n", 543 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta); 544 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), ", 545 si->nr_wb_cp_data, si->nr_wb_data, 546 si->nr_flushing, si->nr_flushed, 547 si->flush_list_empty); 548 seq_printf(s, "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n", 549 si->nr_discarding, si->nr_discarded, 550 si->nr_discard_cmd, si->undiscard_blks); 551 seq_printf(s, " - atomic IO: %4d (Max. %4d)\n", 552 si->aw_cnt, si->max_aw_cnt); 553 seq_printf(s, " - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit); 554 seq_printf(s, " - nodes: %4d in %4d\n", 555 si->ndirty_node, si->node_pages); 556 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n", 557 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all); 558 seq_printf(s, " - datas: %4d in files:%4d\n", 559 si->ndirty_data, si->ndirty_files); 560 seq_printf(s, " - quota datas: %4d in quota files:%4d\n", 561 si->ndirty_qdata, si->nquota_files); 562 seq_printf(s, " - meta: %4d in %4d\n", 563 si->ndirty_meta, si->meta_pages); 564 seq_printf(s, " - imeta: %4d\n", 565 si->ndirty_imeta); 566 seq_printf(s, " - fsync mark: %4lld\n", 567 percpu_counter_sum_positive( 568 &si->sbi->rf_node_block_count)); 569 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n", 570 si->dirty_nats, si->nats, si->dirty_sits, si->sits); 571 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n", 572 si->free_nids, si->avail_nids, si->alloc_nids); 573 seq_puts(s, "\nDistribution of User Blocks:"); 574 seq_puts(s, " [ valid | invalid | free ]\n"); 575 seq_puts(s, " ["); 576 577 for (j = 0; j < si->util_valid; j++) 578 seq_putc(s, '-'); 579 seq_putc(s, '|'); 580 581 for (j = 0; j < si->util_invalid; j++) 582 seq_putc(s, '-'); 583 seq_putc(s, '|'); 584 585 for (j = 0; j < si->util_free; j++) 586 seq_putc(s, '-'); 587 seq_puts(s, "]\n\n"); 588 seq_printf(s, "IPU: %u blocks\n", si->inplace_count); 589 seq_printf(s, "SSR: %u blocks in %u segments\n", 590 si->block_count[SSR], si->segment_count[SSR]); 591 seq_printf(s, "LFS: %u blocks in %u segments\n", 592 si->block_count[LFS], si->segment_count[LFS]); 593 594 /* segment usage info */ 595 f2fs_update_sit_info(si->sbi); 596 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n", 597 si->bimodal, si->avg_vblocks); 598 599 /* memory footprint */ 600 update_mem_info(si->sbi); 601 seq_printf(s, "\nMemory: %llu KB\n", 602 (si->base_mem + si->cache_mem + si->page_mem) >> 10); 603 seq_printf(s, " - static: %llu KB\n", 604 si->base_mem >> 10); 605 seq_printf(s, " - cached all: %llu KB\n", 606 si->cache_mem >> 10); 607 seq_printf(s, " - read extent cache: %llu KB\n", 608 si->ext_mem[EX_READ] >> 10); 609 seq_printf(s, " - block age extent cache: %llu KB\n", 610 si->ext_mem[EX_BLOCK_AGE] >> 10); 611 seq_printf(s, " - paged : %llu KB\n", 612 si->page_mem >> 10); 613 } 614 raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags); 615 return 0; 616 } 617 618 DEFINE_SHOW_ATTRIBUTE(stat); 619 #endif 620 621 int f2fs_build_stats(struct f2fs_sb_info *sbi) 622 { 623 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 624 struct f2fs_stat_info *si; 625 unsigned long flags; 626 int i; 627 628 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL); 629 if (!si) 630 return -ENOMEM; 631 632 si->all_area_segs = le32_to_cpu(raw_super->segment_count); 633 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit); 634 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat); 635 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa); 636 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main); 637 si->main_area_sections = le32_to_cpu(raw_super->section_count); 638 si->main_area_zones = si->main_area_sections / 639 le32_to_cpu(raw_super->secs_per_zone); 640 si->sbi = sbi; 641 sbi->stat_info = si; 642 643 /* general extent cache stats */ 644 for (i = 0; i < NR_EXTENT_CACHES; i++) { 645 atomic64_set(&sbi->total_hit_ext[i], 0); 646 atomic64_set(&sbi->read_hit_rbtree[i], 0); 647 atomic64_set(&sbi->read_hit_cached[i], 0); 648 } 649 650 /* read extent_cache only */ 651 atomic64_set(&sbi->read_hit_largest, 0); 652 653 atomic_set(&sbi->inline_xattr, 0); 654 atomic_set(&sbi->inline_inode, 0); 655 atomic_set(&sbi->inline_dir, 0); 656 atomic_set(&sbi->compr_inode, 0); 657 atomic64_set(&sbi->compr_blocks, 0); 658 atomic_set(&sbi->swapfile_inode, 0); 659 atomic_set(&sbi->atomic_files, 0); 660 atomic_set(&sbi->inplace_count, 0); 661 for (i = META_CP; i < META_MAX; i++) 662 atomic_set(&sbi->meta_count[i], 0); 663 664 atomic_set(&sbi->max_aw_cnt, 0); 665 666 raw_spin_lock_irqsave(&f2fs_stat_lock, flags); 667 list_add_tail(&si->stat_list, &f2fs_stat_list); 668 raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags); 669 670 return 0; 671 } 672 673 void f2fs_destroy_stats(struct f2fs_sb_info *sbi) 674 { 675 struct f2fs_stat_info *si = F2FS_STAT(sbi); 676 unsigned long flags; 677 678 raw_spin_lock_irqsave(&f2fs_stat_lock, flags); 679 list_del(&si->stat_list); 680 raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags); 681 682 kfree(si); 683 } 684 685 void __init f2fs_create_root_stats(void) 686 { 687 #ifdef CONFIG_DEBUG_FS 688 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL); 689 690 debugfs_create_file("status", 0444, f2fs_debugfs_root, NULL, 691 &stat_fops); 692 #endif 693 } 694 695 void f2fs_destroy_root_stats(void) 696 { 697 #ifdef CONFIG_DEBUG_FS 698 debugfs_remove_recursive(f2fs_debugfs_root); 699 f2fs_debugfs_root = NULL; 700 #endif 701 } 702