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_MUTEX(f2fs_stat_mutex); 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 = 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 /* validation check of the segment numbers */ 76 si->hit_largest = atomic64_read(&sbi->read_hit_largest); 77 si->hit_cached = atomic64_read(&sbi->read_hit_cached); 78 si->hit_rbtree = atomic64_read(&sbi->read_hit_rbtree); 79 si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree; 80 si->total_ext = atomic64_read(&sbi->total_hit_ext); 81 si->ext_tree = atomic_read(&sbi->total_ext_tree); 82 si->zombie_tree = atomic_read(&sbi->total_zombie_tree); 83 si->ext_node = atomic_read(&sbi->total_ext_node); 84 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES); 85 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS); 86 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META); 87 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA); 88 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA); 89 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA); 90 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE]; 91 si->ndirty_files = sbi->ndirty_inode[FILE_INODE]; 92 si->nquota_files = sbi->nquota_files; 93 si->ndirty_all = sbi->ndirty_inode[DIRTY_META]; 94 si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES); 95 si->aw_cnt = sbi->atomic_files; 96 si->vw_cnt = atomic_read(&sbi->vw_cnt); 97 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt); 98 si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt); 99 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ); 100 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE); 101 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA); 102 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA); 103 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA); 104 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE); 105 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META); 106 if (SM_I(sbi)->fcc_info) { 107 si->nr_flushed = 108 atomic_read(&SM_I(sbi)->fcc_info->issued_flush); 109 si->nr_flushing = 110 atomic_read(&SM_I(sbi)->fcc_info->queued_flush); 111 si->flush_list_empty = 112 llist_empty(&SM_I(sbi)->fcc_info->issue_list); 113 } 114 if (SM_I(sbi)->dcc_info) { 115 si->nr_discarded = 116 atomic_read(&SM_I(sbi)->dcc_info->issued_discard); 117 si->nr_discarding = 118 atomic_read(&SM_I(sbi)->dcc_info->queued_discard); 119 si->nr_discard_cmd = 120 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); 121 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks; 122 } 123 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg; 124 si->rsvd_segs = reserved_segments(sbi); 125 si->overp_segs = overprovision_segments(sbi); 126 si->valid_count = valid_user_blocks(sbi); 127 si->discard_blks = discard_blocks(sbi); 128 si->valid_node_count = valid_node_count(sbi); 129 si->valid_inode_count = valid_inode_count(sbi); 130 si->inline_xattr = atomic_read(&sbi->inline_xattr); 131 si->inline_inode = atomic_read(&sbi->inline_inode); 132 si->inline_dir = atomic_read(&sbi->inline_dir); 133 si->compr_inode = atomic_read(&sbi->compr_inode); 134 si->compr_blocks = atomic_read(&sbi->compr_blocks); 135 si->append = sbi->im[APPEND_INO].ino_num; 136 si->update = sbi->im[UPDATE_INO].ino_num; 137 si->orphans = sbi->im[ORPHAN_INO].ino_num; 138 si->utilization = utilization(sbi); 139 140 si->free_segs = free_segments(sbi); 141 si->free_secs = free_sections(sbi); 142 si->prefree_count = prefree_segments(sbi); 143 si->dirty_count = dirty_segments(sbi); 144 if (sbi->node_inode) 145 si->node_pages = NODE_MAPPING(sbi)->nrpages; 146 if (sbi->meta_inode) 147 si->meta_pages = META_MAPPING(sbi)->nrpages; 148 si->nats = NM_I(sbi)->nat_cnt; 149 si->dirty_nats = NM_I(sbi)->dirty_nat_cnt; 150 si->sits = MAIN_SEGS(sbi); 151 si->dirty_sits = SIT_I(sbi)->dirty_sentries; 152 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID]; 153 si->avail_nids = NM_I(sbi)->available_nids; 154 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID]; 155 si->io_skip_bggc = sbi->io_skip_bggc; 156 si->other_skip_bggc = sbi->other_skip_bggc; 157 si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC]; 158 si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC]; 159 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg) 160 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 161 / 2; 162 si->util_valid = (int)(written_block_count(sbi) >> 163 sbi->log_blocks_per_seg) 164 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 165 / 2; 166 si->util_invalid = 50 - si->util_free - si->util_valid; 167 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) { 168 struct curseg_info *curseg = CURSEG_I(sbi, i); 169 si->curseg[i] = curseg->segno; 170 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno); 171 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]); 172 } 173 174 for (i = META_CP; i < META_MAX; i++) 175 si->meta_count[i] = atomic_read(&sbi->meta_count[i]); 176 177 for (i = 0; i < 2; i++) { 178 si->segment_count[i] = sbi->segment_count[i]; 179 si->block_count[i] = sbi->block_count[i]; 180 } 181 182 si->inplace_count = atomic_read(&sbi->inplace_count); 183 } 184 185 /* 186 * This function calculates memory footprint. 187 */ 188 static void update_mem_info(struct f2fs_sb_info *sbi) 189 { 190 struct f2fs_stat_info *si = F2FS_STAT(sbi); 191 int i; 192 193 if (si->base_mem) 194 goto get_cache; 195 196 /* build stat */ 197 si->base_mem = sizeof(struct f2fs_stat_info); 198 199 /* build superblock */ 200 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize; 201 si->base_mem += 2 * sizeof(struct f2fs_inode_info); 202 si->base_mem += sizeof(*sbi->ckpt); 203 204 /* build sm */ 205 si->base_mem += sizeof(struct f2fs_sm_info); 206 207 /* build sit */ 208 si->base_mem += sizeof(struct sit_info); 209 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry); 210 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 211 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 212 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 213 si->base_mem += SIT_VBLOCK_MAP_SIZE; 214 if (__is_large_section(sbi)) 215 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry); 216 si->base_mem += __bitmap_size(sbi, SIT_BITMAP); 217 218 /* build free segmap */ 219 si->base_mem += sizeof(struct free_segmap_info); 220 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 221 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 222 223 /* build curseg */ 224 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE; 225 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE; 226 227 /* build dirty segmap */ 228 si->base_mem += sizeof(struct dirty_seglist_info); 229 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi)); 230 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 231 232 /* build nm */ 233 si->base_mem += sizeof(struct f2fs_nm_info); 234 si->base_mem += __bitmap_size(sbi, NAT_BITMAP); 235 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS); 236 si->base_mem += NM_I(sbi)->nat_blocks * 237 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK); 238 si->base_mem += NM_I(sbi)->nat_blocks / 8; 239 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short); 240 241 get_cache: 242 si->cache_mem = 0; 243 244 /* build gc */ 245 if (sbi->gc_thread) 246 si->cache_mem += sizeof(struct f2fs_gc_kthread); 247 248 /* build merge flush thread */ 249 if (SM_I(sbi)->fcc_info) 250 si->cache_mem += sizeof(struct flush_cmd_control); 251 if (SM_I(sbi)->dcc_info) { 252 si->cache_mem += sizeof(struct discard_cmd_control); 253 si->cache_mem += sizeof(struct discard_cmd) * 254 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); 255 } 256 257 /* free nids */ 258 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] + 259 NM_I(sbi)->nid_cnt[PREALLOC_NID]) * 260 sizeof(struct free_nid); 261 si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry); 262 si->cache_mem += NM_I(sbi)->dirty_nat_cnt * 263 sizeof(struct nat_entry_set); 264 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages); 265 for (i = 0; i < MAX_INO_ENTRY; i++) 266 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry); 267 si->cache_mem += atomic_read(&sbi->total_ext_tree) * 268 sizeof(struct extent_tree); 269 si->cache_mem += atomic_read(&sbi->total_ext_node) * 270 sizeof(struct extent_node); 271 272 si->page_mem = 0; 273 if (sbi->node_inode) { 274 unsigned npages = NODE_MAPPING(sbi)->nrpages; 275 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 276 } 277 if (sbi->meta_inode) { 278 unsigned npages = META_MAPPING(sbi)->nrpages; 279 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 280 } 281 } 282 283 static int stat_show(struct seq_file *s, void *v) 284 { 285 struct f2fs_stat_info *si; 286 int i = 0; 287 int j; 288 289 mutex_lock(&f2fs_stat_mutex); 290 list_for_each_entry(si, &f2fs_stat_list, stat_list) { 291 update_general_status(si->sbi); 292 293 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n", 294 si->sbi->sb->s_bdev, i++, 295 f2fs_readonly(si->sbi->sb) ? "RO": "RW", 296 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ? 297 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good")); 298 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ", 299 si->sit_area_segs, si->nat_area_segs); 300 seq_printf(s, "[SSA: %d] [MAIN: %d", 301 si->ssa_area_segs, si->main_area_segs); 302 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n", 303 si->overp_segs, si->rsvd_segs); 304 if (test_opt(si->sbi, DISCARD)) 305 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n", 306 si->utilization, si->valid_count, si->discard_blks); 307 else 308 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n", 309 si->utilization, si->valid_count); 310 311 seq_printf(s, " - Node: %u (Inode: %u, ", 312 si->valid_node_count, si->valid_inode_count); 313 seq_printf(s, "Other: %u)\n - Data: %u\n", 314 si->valid_node_count - si->valid_inode_count, 315 si->valid_count - si->valid_node_count); 316 seq_printf(s, " - Inline_xattr Inode: %u\n", 317 si->inline_xattr); 318 seq_printf(s, " - Inline_data Inode: %u\n", 319 si->inline_inode); 320 seq_printf(s, " - Inline_dentry Inode: %u\n", 321 si->inline_dir); 322 seq_printf(s, " - Compressed Inode: %u, Blocks: %u\n", 323 si->compr_inode, si->compr_blocks); 324 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n", 325 si->orphans, si->append, si->update); 326 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n", 327 si->main_area_segs, si->main_area_sections, 328 si->main_area_zones); 329 seq_printf(s, " - COLD data: %d, %d, %d\n", 330 si->curseg[CURSEG_COLD_DATA], 331 si->cursec[CURSEG_COLD_DATA], 332 si->curzone[CURSEG_COLD_DATA]); 333 seq_printf(s, " - WARM data: %d, %d, %d\n", 334 si->curseg[CURSEG_WARM_DATA], 335 si->cursec[CURSEG_WARM_DATA], 336 si->curzone[CURSEG_WARM_DATA]); 337 seq_printf(s, " - HOT data: %d, %d, %d\n", 338 si->curseg[CURSEG_HOT_DATA], 339 si->cursec[CURSEG_HOT_DATA], 340 si->curzone[CURSEG_HOT_DATA]); 341 seq_printf(s, " - Dir dnode: %d, %d, %d\n", 342 si->curseg[CURSEG_HOT_NODE], 343 si->cursec[CURSEG_HOT_NODE], 344 si->curzone[CURSEG_HOT_NODE]); 345 seq_printf(s, " - File dnode: %d, %d, %d\n", 346 si->curseg[CURSEG_WARM_NODE], 347 si->cursec[CURSEG_WARM_NODE], 348 si->curzone[CURSEG_WARM_NODE]); 349 seq_printf(s, " - Indir nodes: %d, %d, %d\n", 350 si->curseg[CURSEG_COLD_NODE], 351 si->cursec[CURSEG_COLD_NODE], 352 si->curzone[CURSEG_COLD_NODE]); 353 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n", 354 si->main_area_segs - si->dirty_count - 355 si->prefree_count - si->free_segs, 356 si->dirty_count); 357 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n", 358 si->prefree_count, si->free_segs, si->free_secs); 359 seq_printf(s, "CP calls: %d (BG: %d)\n", 360 si->cp_count, si->bg_cp_count); 361 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]); 362 seq_printf(s, " - sit blocks : %u\n", 363 si->meta_count[META_SIT]); 364 seq_printf(s, " - nat blocks : %u\n", 365 si->meta_count[META_NAT]); 366 seq_printf(s, " - ssa blocks : %u\n", 367 si->meta_count[META_SSA]); 368 seq_printf(s, "GC calls: %d (BG: %d)\n", 369 si->call_count, si->bg_gc); 370 seq_printf(s, " - data segments : %d (%d)\n", 371 si->data_segs, si->bg_data_segs); 372 seq_printf(s, " - node segments : %d (%d)\n", 373 si->node_segs, si->bg_node_segs); 374 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks, 375 si->bg_data_blks + si->bg_node_blks); 376 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks, 377 si->bg_data_blks); 378 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks, 379 si->bg_node_blks); 380 seq_printf(s, "Skipped : atomic write %llu (%llu)\n", 381 si->skipped_atomic_files[BG_GC] + 382 si->skipped_atomic_files[FG_GC], 383 si->skipped_atomic_files[BG_GC]); 384 seq_printf(s, "BG skip : IO: %u, Other: %u\n", 385 si->io_skip_bggc, si->other_skip_bggc); 386 seq_puts(s, "\nExtent Cache:\n"); 387 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n", 388 si->hit_largest, si->hit_cached, 389 si->hit_rbtree); 390 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n", 391 !si->total_ext ? 0 : 392 div64_u64(si->hit_total * 100, si->total_ext), 393 si->hit_total, si->total_ext); 394 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n", 395 si->ext_tree, si->zombie_tree, si->ext_node); 396 seq_puts(s, "\nBalancing F2FS Async:\n"); 397 seq_printf(s, " - DIO (R: %4d, W: %4d)\n", 398 si->nr_dio_read, si->nr_dio_write); 399 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n", 400 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta); 401 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), " 402 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n", 403 si->nr_wb_cp_data, si->nr_wb_data, 404 si->nr_flushing, si->nr_flushed, 405 si->flush_list_empty, 406 si->nr_discarding, si->nr_discarded, 407 si->nr_discard_cmd, si->undiscard_blks); 408 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), " 409 "volatile IO: %4d (Max. %4d)\n", 410 si->inmem_pages, si->aw_cnt, si->max_aw_cnt, 411 si->vw_cnt, si->max_vw_cnt); 412 seq_printf(s, " - nodes: %4d in %4d\n", 413 si->ndirty_node, si->node_pages); 414 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n", 415 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all); 416 seq_printf(s, " - datas: %4d in files:%4d\n", 417 si->ndirty_data, si->ndirty_files); 418 seq_printf(s, " - quota datas: %4d in quota files:%4d\n", 419 si->ndirty_qdata, si->nquota_files); 420 seq_printf(s, " - meta: %4d in %4d\n", 421 si->ndirty_meta, si->meta_pages); 422 seq_printf(s, " - imeta: %4d\n", 423 si->ndirty_imeta); 424 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n", 425 si->dirty_nats, si->nats, si->dirty_sits, si->sits); 426 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n", 427 si->free_nids, si->avail_nids, si->alloc_nids); 428 seq_puts(s, "\nDistribution of User Blocks:"); 429 seq_puts(s, " [ valid | invalid | free ]\n"); 430 seq_puts(s, " ["); 431 432 for (j = 0; j < si->util_valid; j++) 433 seq_putc(s, '-'); 434 seq_putc(s, '|'); 435 436 for (j = 0; j < si->util_invalid; j++) 437 seq_putc(s, '-'); 438 seq_putc(s, '|'); 439 440 for (j = 0; j < si->util_free; j++) 441 seq_putc(s, '-'); 442 seq_puts(s, "]\n\n"); 443 seq_printf(s, "IPU: %u blocks\n", si->inplace_count); 444 seq_printf(s, "SSR: %u blocks in %u segments\n", 445 si->block_count[SSR], si->segment_count[SSR]); 446 seq_printf(s, "LFS: %u blocks in %u segments\n", 447 si->block_count[LFS], si->segment_count[LFS]); 448 449 /* segment usage info */ 450 f2fs_update_sit_info(si->sbi); 451 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n", 452 si->bimodal, si->avg_vblocks); 453 454 /* memory footprint */ 455 update_mem_info(si->sbi); 456 seq_printf(s, "\nMemory: %llu KB\n", 457 (si->base_mem + si->cache_mem + si->page_mem) >> 10); 458 seq_printf(s, " - static: %llu KB\n", 459 si->base_mem >> 10); 460 seq_printf(s, " - cached: %llu KB\n", 461 si->cache_mem >> 10); 462 seq_printf(s, " - paged : %llu KB\n", 463 si->page_mem >> 10); 464 } 465 mutex_unlock(&f2fs_stat_mutex); 466 return 0; 467 } 468 469 DEFINE_SHOW_ATTRIBUTE(stat); 470 #endif 471 472 int f2fs_build_stats(struct f2fs_sb_info *sbi) 473 { 474 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 475 struct f2fs_stat_info *si; 476 int i; 477 478 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL); 479 if (!si) 480 return -ENOMEM; 481 482 si->all_area_segs = le32_to_cpu(raw_super->segment_count); 483 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit); 484 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat); 485 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa); 486 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main); 487 si->main_area_sections = le32_to_cpu(raw_super->section_count); 488 si->main_area_zones = si->main_area_sections / 489 le32_to_cpu(raw_super->secs_per_zone); 490 si->sbi = sbi; 491 sbi->stat_info = si; 492 493 atomic64_set(&sbi->total_hit_ext, 0); 494 atomic64_set(&sbi->read_hit_rbtree, 0); 495 atomic64_set(&sbi->read_hit_largest, 0); 496 atomic64_set(&sbi->read_hit_cached, 0); 497 498 atomic_set(&sbi->inline_xattr, 0); 499 atomic_set(&sbi->inline_inode, 0); 500 atomic_set(&sbi->inline_dir, 0); 501 atomic_set(&sbi->compr_inode, 0); 502 atomic_set(&sbi->compr_blocks, 0); 503 atomic_set(&sbi->inplace_count, 0); 504 for (i = META_CP; i < META_MAX; i++) 505 atomic_set(&sbi->meta_count[i], 0); 506 507 atomic_set(&sbi->vw_cnt, 0); 508 atomic_set(&sbi->max_aw_cnt, 0); 509 atomic_set(&sbi->max_vw_cnt, 0); 510 511 mutex_lock(&f2fs_stat_mutex); 512 list_add_tail(&si->stat_list, &f2fs_stat_list); 513 mutex_unlock(&f2fs_stat_mutex); 514 515 return 0; 516 } 517 518 void f2fs_destroy_stats(struct f2fs_sb_info *sbi) 519 { 520 struct f2fs_stat_info *si = F2FS_STAT(sbi); 521 522 mutex_lock(&f2fs_stat_mutex); 523 list_del(&si->stat_list); 524 mutex_unlock(&f2fs_stat_mutex); 525 526 kvfree(si); 527 } 528 529 void __init f2fs_create_root_stats(void) 530 { 531 #ifdef CONFIG_DEBUG_FS 532 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL); 533 534 debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL, 535 &stat_fops); 536 #endif 537 } 538 539 void f2fs_destroy_root_stats(void) 540 { 541 #ifdef CONFIG_DEBUG_FS 542 debugfs_remove_recursive(f2fs_debugfs_root); 543 f2fs_debugfs_root = NULL; 544 #endif 545 } 546