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 struct dentry *f2fs_debugfs_root; 25 static DEFINE_MUTEX(f2fs_stat_mutex); 26 27 static void update_general_status(struct f2fs_sb_info *sbi) 28 { 29 struct f2fs_stat_info *si = F2FS_STAT(sbi); 30 int i; 31 32 /* validation check of the segment numbers */ 33 si->hit_largest = atomic64_read(&sbi->read_hit_largest); 34 si->hit_cached = atomic64_read(&sbi->read_hit_cached); 35 si->hit_rbtree = atomic64_read(&sbi->read_hit_rbtree); 36 si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree; 37 si->total_ext = atomic64_read(&sbi->total_hit_ext); 38 si->ext_tree = atomic_read(&sbi->total_ext_tree); 39 si->zombie_tree = atomic_read(&sbi->total_zombie_tree); 40 si->ext_node = atomic_read(&sbi->total_ext_node); 41 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES); 42 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS); 43 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META); 44 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA); 45 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA); 46 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA); 47 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE]; 48 si->ndirty_files = sbi->ndirty_inode[FILE_INODE]; 49 si->nquota_files = sbi->nquota_files; 50 si->ndirty_all = sbi->ndirty_inode[DIRTY_META]; 51 si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES); 52 si->aw_cnt = atomic_read(&sbi->aw_cnt); 53 si->vw_cnt = atomic_read(&sbi->vw_cnt); 54 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt); 55 si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt); 56 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ); 57 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE); 58 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA); 59 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA); 60 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA); 61 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE); 62 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META); 63 if (SM_I(sbi) && SM_I(sbi)->fcc_info) { 64 si->nr_flushed = 65 atomic_read(&SM_I(sbi)->fcc_info->issued_flush); 66 si->nr_flushing = 67 atomic_read(&SM_I(sbi)->fcc_info->queued_flush); 68 si->flush_list_empty = 69 llist_empty(&SM_I(sbi)->fcc_info->issue_list); 70 } 71 if (SM_I(sbi) && SM_I(sbi)->dcc_info) { 72 si->nr_discarded = 73 atomic_read(&SM_I(sbi)->dcc_info->issued_discard); 74 si->nr_discarding = 75 atomic_read(&SM_I(sbi)->dcc_info->queued_discard); 76 si->nr_discard_cmd = 77 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); 78 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks; 79 } 80 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg; 81 si->rsvd_segs = reserved_segments(sbi); 82 si->overp_segs = overprovision_segments(sbi); 83 si->valid_count = valid_user_blocks(sbi); 84 si->discard_blks = discard_blocks(sbi); 85 si->valid_node_count = valid_node_count(sbi); 86 si->valid_inode_count = valid_inode_count(sbi); 87 si->inline_xattr = atomic_read(&sbi->inline_xattr); 88 si->inline_inode = atomic_read(&sbi->inline_inode); 89 si->inline_dir = atomic_read(&sbi->inline_dir); 90 si->append = sbi->im[APPEND_INO].ino_num; 91 si->update = sbi->im[UPDATE_INO].ino_num; 92 si->orphans = sbi->im[ORPHAN_INO].ino_num; 93 si->utilization = utilization(sbi); 94 95 si->free_segs = free_segments(sbi); 96 si->free_secs = free_sections(sbi); 97 si->prefree_count = prefree_segments(sbi); 98 si->dirty_count = dirty_segments(sbi); 99 if (sbi->node_inode) 100 si->node_pages = NODE_MAPPING(sbi)->nrpages; 101 if (sbi->meta_inode) 102 si->meta_pages = META_MAPPING(sbi)->nrpages; 103 si->nats = NM_I(sbi)->nat_cnt; 104 si->dirty_nats = NM_I(sbi)->dirty_nat_cnt; 105 si->sits = MAIN_SEGS(sbi); 106 si->dirty_sits = SIT_I(sbi)->dirty_sentries; 107 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID]; 108 si->avail_nids = NM_I(sbi)->available_nids; 109 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID]; 110 si->bg_gc = sbi->bg_gc; 111 si->io_skip_bggc = sbi->io_skip_bggc; 112 si->other_skip_bggc = sbi->other_skip_bggc; 113 si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC]; 114 si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC]; 115 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg) 116 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 117 / 2; 118 si->util_valid = (int)(written_block_count(sbi) >> 119 sbi->log_blocks_per_seg) 120 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 121 / 2; 122 si->util_invalid = 50 - si->util_free - si->util_valid; 123 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) { 124 struct curseg_info *curseg = CURSEG_I(sbi, i); 125 si->curseg[i] = curseg->segno; 126 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno); 127 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]); 128 } 129 130 for (i = META_CP; i < META_MAX; i++) 131 si->meta_count[i] = atomic_read(&sbi->meta_count[i]); 132 133 for (i = 0; i < 2; i++) { 134 si->segment_count[i] = sbi->segment_count[i]; 135 si->block_count[i] = sbi->block_count[i]; 136 } 137 138 si->inplace_count = atomic_read(&sbi->inplace_count); 139 } 140 141 /* 142 * This function calculates BDF of every segments 143 */ 144 static void update_sit_info(struct f2fs_sb_info *sbi) 145 { 146 struct f2fs_stat_info *si = F2FS_STAT(sbi); 147 unsigned long long blks_per_sec, hblks_per_sec, total_vblocks; 148 unsigned long long bimodal, dist; 149 unsigned int segno, vblocks; 150 int ndirty = 0; 151 152 bimodal = 0; 153 total_vblocks = 0; 154 blks_per_sec = BLKS_PER_SEC(sbi); 155 hblks_per_sec = blks_per_sec / 2; 156 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { 157 vblocks = get_valid_blocks(sbi, segno, true); 158 dist = abs(vblocks - hblks_per_sec); 159 bimodal += dist * dist; 160 161 if (vblocks > 0 && vblocks < blks_per_sec) { 162 total_vblocks += vblocks; 163 ndirty++; 164 } 165 } 166 dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100); 167 si->bimodal = div64_u64(bimodal, dist); 168 if (si->dirty_count) 169 si->avg_vblocks = div_u64(total_vblocks, ndirty); 170 else 171 si->avg_vblocks = 0; 172 } 173 174 /* 175 * This function calculates memory footprint. 176 */ 177 static void update_mem_info(struct f2fs_sb_info *sbi) 178 { 179 struct f2fs_stat_info *si = F2FS_STAT(sbi); 180 int i; 181 182 if (si->base_mem) 183 goto get_cache; 184 185 /* build stat */ 186 si->base_mem = sizeof(struct f2fs_stat_info); 187 188 /* build superblock */ 189 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize; 190 si->base_mem += 2 * sizeof(struct f2fs_inode_info); 191 si->base_mem += sizeof(*sbi->ckpt); 192 193 /* build sm */ 194 si->base_mem += sizeof(struct f2fs_sm_info); 195 196 /* build sit */ 197 si->base_mem += sizeof(struct sit_info); 198 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry); 199 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 200 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 201 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 202 si->base_mem += SIT_VBLOCK_MAP_SIZE; 203 if (__is_large_section(sbi)) 204 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry); 205 si->base_mem += __bitmap_size(sbi, SIT_BITMAP); 206 207 /* build free segmap */ 208 si->base_mem += sizeof(struct free_segmap_info); 209 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 210 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 211 212 /* build curseg */ 213 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE; 214 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE; 215 216 /* build dirty segmap */ 217 si->base_mem += sizeof(struct dirty_seglist_info); 218 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi)); 219 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 220 221 /* build nm */ 222 si->base_mem += sizeof(struct f2fs_nm_info); 223 si->base_mem += __bitmap_size(sbi, NAT_BITMAP); 224 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS); 225 si->base_mem += NM_I(sbi)->nat_blocks * 226 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK); 227 si->base_mem += NM_I(sbi)->nat_blocks / 8; 228 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short); 229 230 get_cache: 231 si->cache_mem = 0; 232 233 /* build gc */ 234 if (sbi->gc_thread) 235 si->cache_mem += sizeof(struct f2fs_gc_kthread); 236 237 /* build merge flush thread */ 238 if (SM_I(sbi)->fcc_info) 239 si->cache_mem += sizeof(struct flush_cmd_control); 240 if (SM_I(sbi)->dcc_info) { 241 si->cache_mem += sizeof(struct discard_cmd_control); 242 si->cache_mem += sizeof(struct discard_cmd) * 243 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); 244 } 245 246 /* free nids */ 247 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] + 248 NM_I(sbi)->nid_cnt[PREALLOC_NID]) * 249 sizeof(struct free_nid); 250 si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry); 251 si->cache_mem += NM_I(sbi)->dirty_nat_cnt * 252 sizeof(struct nat_entry_set); 253 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages); 254 for (i = 0; i < MAX_INO_ENTRY; i++) 255 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry); 256 si->cache_mem += atomic_read(&sbi->total_ext_tree) * 257 sizeof(struct extent_tree); 258 si->cache_mem += atomic_read(&sbi->total_ext_node) * 259 sizeof(struct extent_node); 260 261 si->page_mem = 0; 262 if (sbi->node_inode) { 263 unsigned npages = NODE_MAPPING(sbi)->nrpages; 264 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 265 } 266 if (sbi->meta_inode) { 267 unsigned npages = META_MAPPING(sbi)->nrpages; 268 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 269 } 270 } 271 272 static int stat_show(struct seq_file *s, void *v) 273 { 274 struct f2fs_stat_info *si; 275 int i = 0; 276 int j; 277 278 mutex_lock(&f2fs_stat_mutex); 279 list_for_each_entry(si, &f2fs_stat_list, stat_list) { 280 update_general_status(si->sbi); 281 282 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n", 283 si->sbi->sb->s_bdev, i++, 284 f2fs_readonly(si->sbi->sb) ? "RO": "RW", 285 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ? 286 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good")); 287 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ", 288 si->sit_area_segs, si->nat_area_segs); 289 seq_printf(s, "[SSA: %d] [MAIN: %d", 290 si->ssa_area_segs, si->main_area_segs); 291 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n", 292 si->overp_segs, si->rsvd_segs); 293 if (test_opt(si->sbi, DISCARD)) 294 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n", 295 si->utilization, si->valid_count, si->discard_blks); 296 else 297 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n", 298 si->utilization, si->valid_count); 299 300 seq_printf(s, " - Node: %u (Inode: %u, ", 301 si->valid_node_count, si->valid_inode_count); 302 seq_printf(s, "Other: %u)\n - Data: %u\n", 303 si->valid_node_count - si->valid_inode_count, 304 si->valid_count - si->valid_node_count); 305 seq_printf(s, " - Inline_xattr Inode: %u\n", 306 si->inline_xattr); 307 seq_printf(s, " - Inline_data Inode: %u\n", 308 si->inline_inode); 309 seq_printf(s, " - Inline_dentry Inode: %u\n", 310 si->inline_dir); 311 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n", 312 si->orphans, si->append, si->update); 313 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n", 314 si->main_area_segs, si->main_area_sections, 315 si->main_area_zones); 316 seq_printf(s, " - COLD data: %d, %d, %d\n", 317 si->curseg[CURSEG_COLD_DATA], 318 si->cursec[CURSEG_COLD_DATA], 319 si->curzone[CURSEG_COLD_DATA]); 320 seq_printf(s, " - WARM data: %d, %d, %d\n", 321 si->curseg[CURSEG_WARM_DATA], 322 si->cursec[CURSEG_WARM_DATA], 323 si->curzone[CURSEG_WARM_DATA]); 324 seq_printf(s, " - HOT data: %d, %d, %d\n", 325 si->curseg[CURSEG_HOT_DATA], 326 si->cursec[CURSEG_HOT_DATA], 327 si->curzone[CURSEG_HOT_DATA]); 328 seq_printf(s, " - Dir dnode: %d, %d, %d\n", 329 si->curseg[CURSEG_HOT_NODE], 330 si->cursec[CURSEG_HOT_NODE], 331 si->curzone[CURSEG_HOT_NODE]); 332 seq_printf(s, " - File dnode: %d, %d, %d\n", 333 si->curseg[CURSEG_WARM_NODE], 334 si->cursec[CURSEG_WARM_NODE], 335 si->curzone[CURSEG_WARM_NODE]); 336 seq_printf(s, " - Indir nodes: %d, %d, %d\n", 337 si->curseg[CURSEG_COLD_NODE], 338 si->cursec[CURSEG_COLD_NODE], 339 si->curzone[CURSEG_COLD_NODE]); 340 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n", 341 si->main_area_segs - si->dirty_count - 342 si->prefree_count - si->free_segs, 343 si->dirty_count); 344 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n", 345 si->prefree_count, si->free_segs, si->free_secs); 346 seq_printf(s, "CP calls: %d (BG: %d)\n", 347 si->cp_count, si->bg_cp_count); 348 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]); 349 seq_printf(s, " - sit blocks : %u\n", 350 si->meta_count[META_SIT]); 351 seq_printf(s, " - nat blocks : %u\n", 352 si->meta_count[META_NAT]); 353 seq_printf(s, " - ssa blocks : %u\n", 354 si->meta_count[META_SSA]); 355 seq_printf(s, "GC calls: %d (BG: %d)\n", 356 si->call_count, si->bg_gc); 357 seq_printf(s, " - data segments : %d (%d)\n", 358 si->data_segs, si->bg_data_segs); 359 seq_printf(s, " - node segments : %d (%d)\n", 360 si->node_segs, si->bg_node_segs); 361 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks, 362 si->bg_data_blks + si->bg_node_blks); 363 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks, 364 si->bg_data_blks); 365 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks, 366 si->bg_node_blks); 367 seq_printf(s, "Skipped : atomic write %llu (%llu)\n", 368 si->skipped_atomic_files[BG_GC] + 369 si->skipped_atomic_files[FG_GC], 370 si->skipped_atomic_files[BG_GC]); 371 seq_printf(s, "BG skip : IO: %u, Other: %u\n", 372 si->io_skip_bggc, si->other_skip_bggc); 373 seq_puts(s, "\nExtent Cache:\n"); 374 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n", 375 si->hit_largest, si->hit_cached, 376 si->hit_rbtree); 377 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n", 378 !si->total_ext ? 0 : 379 div64_u64(si->hit_total * 100, si->total_ext), 380 si->hit_total, si->total_ext); 381 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n", 382 si->ext_tree, si->zombie_tree, si->ext_node); 383 seq_puts(s, "\nBalancing F2FS Async:\n"); 384 seq_printf(s, " - DIO (R: %4d, W: %4d)\n", 385 si->nr_dio_read, si->nr_dio_write); 386 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n", 387 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta); 388 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), " 389 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n", 390 si->nr_wb_cp_data, si->nr_wb_data, 391 si->nr_flushing, si->nr_flushed, 392 si->flush_list_empty, 393 si->nr_discarding, si->nr_discarded, 394 si->nr_discard_cmd, si->undiscard_blks); 395 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), " 396 "volatile IO: %4d (Max. %4d)\n", 397 si->inmem_pages, si->aw_cnt, si->max_aw_cnt, 398 si->vw_cnt, si->max_vw_cnt); 399 seq_printf(s, " - nodes: %4d in %4d\n", 400 si->ndirty_node, si->node_pages); 401 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n", 402 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all); 403 seq_printf(s, " - datas: %4d in files:%4d\n", 404 si->ndirty_data, si->ndirty_files); 405 seq_printf(s, " - quota datas: %4d in quota files:%4d\n", 406 si->ndirty_qdata, si->nquota_files); 407 seq_printf(s, " - meta: %4d in %4d\n", 408 si->ndirty_meta, si->meta_pages); 409 seq_printf(s, " - imeta: %4d\n", 410 si->ndirty_imeta); 411 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n", 412 si->dirty_nats, si->nats, si->dirty_sits, si->sits); 413 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n", 414 si->free_nids, si->avail_nids, si->alloc_nids); 415 seq_puts(s, "\nDistribution of User Blocks:"); 416 seq_puts(s, " [ valid | invalid | free ]\n"); 417 seq_puts(s, " ["); 418 419 for (j = 0; j < si->util_valid; j++) 420 seq_putc(s, '-'); 421 seq_putc(s, '|'); 422 423 for (j = 0; j < si->util_invalid; j++) 424 seq_putc(s, '-'); 425 seq_putc(s, '|'); 426 427 for (j = 0; j < si->util_free; j++) 428 seq_putc(s, '-'); 429 seq_puts(s, "]\n\n"); 430 seq_printf(s, "IPU: %u blocks\n", si->inplace_count); 431 seq_printf(s, "SSR: %u blocks in %u segments\n", 432 si->block_count[SSR], si->segment_count[SSR]); 433 seq_printf(s, "LFS: %u blocks in %u segments\n", 434 si->block_count[LFS], si->segment_count[LFS]); 435 436 /* segment usage info */ 437 update_sit_info(si->sbi); 438 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n", 439 si->bimodal, si->avg_vblocks); 440 441 /* memory footprint */ 442 update_mem_info(si->sbi); 443 seq_printf(s, "\nMemory: %llu KB\n", 444 (si->base_mem + si->cache_mem + si->page_mem) >> 10); 445 seq_printf(s, " - static: %llu KB\n", 446 si->base_mem >> 10); 447 seq_printf(s, " - cached: %llu KB\n", 448 si->cache_mem >> 10); 449 seq_printf(s, " - paged : %llu KB\n", 450 si->page_mem >> 10); 451 } 452 mutex_unlock(&f2fs_stat_mutex); 453 return 0; 454 } 455 456 DEFINE_SHOW_ATTRIBUTE(stat); 457 458 int f2fs_build_stats(struct f2fs_sb_info *sbi) 459 { 460 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 461 struct f2fs_stat_info *si; 462 int i; 463 464 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL); 465 if (!si) 466 return -ENOMEM; 467 468 si->all_area_segs = le32_to_cpu(raw_super->segment_count); 469 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit); 470 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat); 471 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa); 472 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main); 473 si->main_area_sections = le32_to_cpu(raw_super->section_count); 474 si->main_area_zones = si->main_area_sections / 475 le32_to_cpu(raw_super->secs_per_zone); 476 si->sbi = sbi; 477 sbi->stat_info = si; 478 479 atomic64_set(&sbi->total_hit_ext, 0); 480 atomic64_set(&sbi->read_hit_rbtree, 0); 481 atomic64_set(&sbi->read_hit_largest, 0); 482 atomic64_set(&sbi->read_hit_cached, 0); 483 484 atomic_set(&sbi->inline_xattr, 0); 485 atomic_set(&sbi->inline_inode, 0); 486 atomic_set(&sbi->inline_dir, 0); 487 atomic_set(&sbi->inplace_count, 0); 488 for (i = META_CP; i < META_MAX; i++) 489 atomic_set(&sbi->meta_count[i], 0); 490 491 atomic_set(&sbi->aw_cnt, 0); 492 atomic_set(&sbi->vw_cnt, 0); 493 atomic_set(&sbi->max_aw_cnt, 0); 494 atomic_set(&sbi->max_vw_cnt, 0); 495 496 mutex_lock(&f2fs_stat_mutex); 497 list_add_tail(&si->stat_list, &f2fs_stat_list); 498 mutex_unlock(&f2fs_stat_mutex); 499 500 return 0; 501 } 502 503 void f2fs_destroy_stats(struct f2fs_sb_info *sbi) 504 { 505 struct f2fs_stat_info *si = F2FS_STAT(sbi); 506 507 mutex_lock(&f2fs_stat_mutex); 508 list_del(&si->stat_list); 509 mutex_unlock(&f2fs_stat_mutex); 510 511 kvfree(si); 512 } 513 514 void __init f2fs_create_root_stats(void) 515 { 516 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL); 517 518 debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL, 519 &stat_fops); 520 } 521 522 void f2fs_destroy_root_stats(void) 523 { 524 debugfs_remove_recursive(f2fs_debugfs_root); 525 f2fs_debugfs_root = NULL; 526 } 527