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->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt); 124 si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt); 125 si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt); 126 spin_lock(&sbi->cprc_info.stat_lock); 127 si->cur_ckpt_time = sbi->cprc_info.cur_time; 128 si->peak_ckpt_time = sbi->cprc_info.peak_time; 129 spin_unlock(&sbi->cprc_info.stat_lock); 130 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg; 131 si->rsvd_segs = reserved_segments(sbi); 132 si->overp_segs = overprovision_segments(sbi); 133 si->valid_count = valid_user_blocks(sbi); 134 si->discard_blks = discard_blocks(sbi); 135 si->valid_node_count = valid_node_count(sbi); 136 si->valid_inode_count = valid_inode_count(sbi); 137 si->inline_xattr = atomic_read(&sbi->inline_xattr); 138 si->inline_inode = atomic_read(&sbi->inline_inode); 139 si->inline_dir = atomic_read(&sbi->inline_dir); 140 si->compr_inode = atomic_read(&sbi->compr_inode); 141 si->compr_blocks = atomic64_read(&sbi->compr_blocks); 142 si->append = sbi->im[APPEND_INO].ino_num; 143 si->update = sbi->im[UPDATE_INO].ino_num; 144 si->orphans = sbi->im[ORPHAN_INO].ino_num; 145 si->utilization = utilization(sbi); 146 147 si->free_segs = free_segments(sbi); 148 si->free_secs = free_sections(sbi); 149 si->prefree_count = prefree_segments(sbi); 150 si->dirty_count = dirty_segments(sbi); 151 if (sbi->node_inode) 152 si->node_pages = NODE_MAPPING(sbi)->nrpages; 153 if (sbi->meta_inode) 154 si->meta_pages = META_MAPPING(sbi)->nrpages; 155 si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT]; 156 si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT]; 157 si->sits = MAIN_SEGS(sbi); 158 si->dirty_sits = SIT_I(sbi)->dirty_sentries; 159 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID]; 160 si->avail_nids = NM_I(sbi)->available_nids; 161 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID]; 162 si->io_skip_bggc = sbi->io_skip_bggc; 163 si->other_skip_bggc = sbi->other_skip_bggc; 164 si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC]; 165 si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC]; 166 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg) 167 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 168 / 2; 169 si->util_valid = (int)(written_block_count(sbi) >> 170 sbi->log_blocks_per_seg) 171 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 172 / 2; 173 si->util_invalid = 50 - si->util_free - si->util_valid; 174 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { 175 struct curseg_info *curseg = CURSEG_I(sbi, i); 176 si->curseg[i] = curseg->segno; 177 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno); 178 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]); 179 } 180 181 for (i = META_CP; i < META_MAX; i++) 182 si->meta_count[i] = atomic_read(&sbi->meta_count[i]); 183 184 for (i = 0; i < NO_CHECK_TYPE; i++) { 185 si->dirty_seg[i] = 0; 186 si->full_seg[i] = 0; 187 si->valid_blks[i] = 0; 188 } 189 190 for (i = 0; i < MAIN_SEGS(sbi); i++) { 191 int blks = get_seg_entry(sbi, i)->valid_blocks; 192 int type = get_seg_entry(sbi, i)->type; 193 194 if (!blks) 195 continue; 196 197 if (blks == sbi->blocks_per_seg) 198 si->full_seg[type]++; 199 else 200 si->dirty_seg[type]++; 201 si->valid_blks[type] += blks; 202 } 203 204 for (i = 0; i < 2; i++) { 205 si->segment_count[i] = sbi->segment_count[i]; 206 si->block_count[i] = sbi->block_count[i]; 207 } 208 209 si->inplace_count = atomic_read(&sbi->inplace_count); 210 } 211 212 /* 213 * This function calculates memory footprint. 214 */ 215 static void update_mem_info(struct f2fs_sb_info *sbi) 216 { 217 struct f2fs_stat_info *si = F2FS_STAT(sbi); 218 int i; 219 220 if (si->base_mem) 221 goto get_cache; 222 223 /* build stat */ 224 si->base_mem = sizeof(struct f2fs_stat_info); 225 226 /* build superblock */ 227 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize; 228 si->base_mem += 2 * sizeof(struct f2fs_inode_info); 229 si->base_mem += sizeof(*sbi->ckpt); 230 231 /* build sm */ 232 si->base_mem += sizeof(struct f2fs_sm_info); 233 234 /* build sit */ 235 si->base_mem += sizeof(struct sit_info); 236 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry); 237 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 238 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 239 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 240 si->base_mem += SIT_VBLOCK_MAP_SIZE; 241 if (__is_large_section(sbi)) 242 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry); 243 si->base_mem += __bitmap_size(sbi, SIT_BITMAP); 244 245 /* build free segmap */ 246 si->base_mem += sizeof(struct free_segmap_info); 247 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 248 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 249 250 /* build curseg */ 251 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE; 252 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE; 253 254 /* build dirty segmap */ 255 si->base_mem += sizeof(struct dirty_seglist_info); 256 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi)); 257 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 258 259 /* build nm */ 260 si->base_mem += sizeof(struct f2fs_nm_info); 261 si->base_mem += __bitmap_size(sbi, NAT_BITMAP); 262 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS); 263 si->base_mem += NM_I(sbi)->nat_blocks * 264 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK); 265 si->base_mem += NM_I(sbi)->nat_blocks / 8; 266 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short); 267 268 get_cache: 269 si->cache_mem = 0; 270 271 /* build gc */ 272 if (sbi->gc_thread) 273 si->cache_mem += sizeof(struct f2fs_gc_kthread); 274 275 /* build merge flush thread */ 276 if (SM_I(sbi)->fcc_info) 277 si->cache_mem += sizeof(struct flush_cmd_control); 278 if (SM_I(sbi)->dcc_info) { 279 si->cache_mem += sizeof(struct discard_cmd_control); 280 si->cache_mem += sizeof(struct discard_cmd) * 281 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); 282 } 283 284 /* free nids */ 285 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] + 286 NM_I(sbi)->nid_cnt[PREALLOC_NID]) * 287 sizeof(struct free_nid); 288 si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] * 289 sizeof(struct nat_entry); 290 si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] * 291 sizeof(struct nat_entry_set); 292 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages); 293 for (i = 0; i < MAX_INO_ENTRY; i++) 294 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry); 295 si->cache_mem += atomic_read(&sbi->total_ext_tree) * 296 sizeof(struct extent_tree); 297 si->cache_mem += atomic_read(&sbi->total_ext_node) * 298 sizeof(struct extent_node); 299 300 si->page_mem = 0; 301 if (sbi->node_inode) { 302 unsigned npages = NODE_MAPPING(sbi)->nrpages; 303 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 304 } 305 if (sbi->meta_inode) { 306 unsigned npages = META_MAPPING(sbi)->nrpages; 307 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 308 } 309 } 310 311 static int stat_show(struct seq_file *s, void *v) 312 { 313 struct f2fs_stat_info *si; 314 int i = 0; 315 int j; 316 317 mutex_lock(&f2fs_stat_mutex); 318 list_for_each_entry(si, &f2fs_stat_list, stat_list) { 319 update_general_status(si->sbi); 320 321 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n", 322 si->sbi->sb->s_bdev, i++, 323 f2fs_readonly(si->sbi->sb) ? "RO": "RW", 324 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ? 325 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good")); 326 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ", 327 si->sit_area_segs, si->nat_area_segs); 328 seq_printf(s, "[SSA: %d] [MAIN: %d", 329 si->ssa_area_segs, si->main_area_segs); 330 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n", 331 si->overp_segs, si->rsvd_segs); 332 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n", 333 ktime_get_boottime_seconds(), 334 SIT_I(si->sbi)->mounted_time); 335 if (test_opt(si->sbi, DISCARD)) 336 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n", 337 si->utilization, si->valid_count, si->discard_blks); 338 else 339 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n", 340 si->utilization, si->valid_count); 341 342 seq_printf(s, " - Node: %u (Inode: %u, ", 343 si->valid_node_count, si->valid_inode_count); 344 seq_printf(s, "Other: %u)\n - Data: %u\n", 345 si->valid_node_count - si->valid_inode_count, 346 si->valid_count - si->valid_node_count); 347 seq_printf(s, " - Inline_xattr Inode: %u\n", 348 si->inline_xattr); 349 seq_printf(s, " - Inline_data Inode: %u\n", 350 si->inline_inode); 351 seq_printf(s, " - Inline_dentry Inode: %u\n", 352 si->inline_dir); 353 seq_printf(s, " - Compressed Inode: %u, Blocks: %llu\n", 354 si->compr_inode, si->compr_blocks); 355 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n", 356 si->orphans, si->append, si->update); 357 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n", 358 si->main_area_segs, si->main_area_sections, 359 si->main_area_zones); 360 seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n", 361 "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk"); 362 seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n", 363 si->curseg[CURSEG_COLD_DATA], 364 si->cursec[CURSEG_COLD_DATA], 365 si->curzone[CURSEG_COLD_DATA], 366 si->dirty_seg[CURSEG_COLD_DATA], 367 si->full_seg[CURSEG_COLD_DATA], 368 si->valid_blks[CURSEG_COLD_DATA]); 369 seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n", 370 si->curseg[CURSEG_WARM_DATA], 371 si->cursec[CURSEG_WARM_DATA], 372 si->curzone[CURSEG_WARM_DATA], 373 si->dirty_seg[CURSEG_WARM_DATA], 374 si->full_seg[CURSEG_WARM_DATA], 375 si->valid_blks[CURSEG_WARM_DATA]); 376 seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n", 377 si->curseg[CURSEG_HOT_DATA], 378 si->cursec[CURSEG_HOT_DATA], 379 si->curzone[CURSEG_HOT_DATA], 380 si->dirty_seg[CURSEG_HOT_DATA], 381 si->full_seg[CURSEG_HOT_DATA], 382 si->valid_blks[CURSEG_HOT_DATA]); 383 seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n", 384 si->curseg[CURSEG_HOT_NODE], 385 si->cursec[CURSEG_HOT_NODE], 386 si->curzone[CURSEG_HOT_NODE], 387 si->dirty_seg[CURSEG_HOT_NODE], 388 si->full_seg[CURSEG_HOT_NODE], 389 si->valid_blks[CURSEG_HOT_NODE]); 390 seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n", 391 si->curseg[CURSEG_WARM_NODE], 392 si->cursec[CURSEG_WARM_NODE], 393 si->curzone[CURSEG_WARM_NODE], 394 si->dirty_seg[CURSEG_WARM_NODE], 395 si->full_seg[CURSEG_WARM_NODE], 396 si->valid_blks[CURSEG_WARM_NODE]); 397 seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n", 398 si->curseg[CURSEG_COLD_NODE], 399 si->cursec[CURSEG_COLD_NODE], 400 si->curzone[CURSEG_COLD_NODE], 401 si->dirty_seg[CURSEG_COLD_NODE], 402 si->full_seg[CURSEG_COLD_NODE], 403 si->valid_blks[CURSEG_COLD_NODE]); 404 seq_printf(s, " - Pinned file: %8d %8d %8d\n", 405 si->curseg[CURSEG_COLD_DATA_PINNED], 406 si->cursec[CURSEG_COLD_DATA_PINNED], 407 si->curzone[CURSEG_COLD_DATA_PINNED]); 408 seq_printf(s, " - ATGC data: %8d %8d %8d\n", 409 si->curseg[CURSEG_ALL_DATA_ATGC], 410 si->cursec[CURSEG_ALL_DATA_ATGC], 411 si->curzone[CURSEG_ALL_DATA_ATGC]); 412 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n", 413 si->main_area_segs - si->dirty_count - 414 si->prefree_count - si->free_segs, 415 si->dirty_count); 416 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n", 417 si->prefree_count, si->free_segs, si->free_secs); 418 seq_printf(s, "CP calls: %d (BG: %d)\n", 419 si->cp_count, si->bg_cp_count); 420 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]); 421 seq_printf(s, " - sit blocks : %u\n", 422 si->meta_count[META_SIT]); 423 seq_printf(s, " - nat blocks : %u\n", 424 si->meta_count[META_NAT]); 425 seq_printf(s, " - ssa blocks : %u\n", 426 si->meta_count[META_SSA]); 427 seq_printf(s, "CP merge (Queued: %4d, Issued: %4d, Total: %4d, " 428 "Cur time: %4d(ms), Peak time: %4d(ms))\n", 429 si->nr_queued_ckpt, si->nr_issued_ckpt, 430 si->nr_total_ckpt, si->cur_ckpt_time, 431 si->peak_ckpt_time); 432 seq_printf(s, "GC calls: %d (BG: %d)\n", 433 si->call_count, si->bg_gc); 434 seq_printf(s, " - data segments : %d (%d)\n", 435 si->data_segs, si->bg_data_segs); 436 seq_printf(s, " - node segments : %d (%d)\n", 437 si->node_segs, si->bg_node_segs); 438 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks, 439 si->bg_data_blks + si->bg_node_blks); 440 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks, 441 si->bg_data_blks); 442 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks, 443 si->bg_node_blks); 444 seq_printf(s, "Skipped : atomic write %llu (%llu)\n", 445 si->skipped_atomic_files[BG_GC] + 446 si->skipped_atomic_files[FG_GC], 447 si->skipped_atomic_files[BG_GC]); 448 seq_printf(s, "BG skip : IO: %u, Other: %u\n", 449 si->io_skip_bggc, si->other_skip_bggc); 450 seq_puts(s, "\nExtent Cache:\n"); 451 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n", 452 si->hit_largest, si->hit_cached, 453 si->hit_rbtree); 454 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n", 455 !si->total_ext ? 0 : 456 div64_u64(si->hit_total * 100, si->total_ext), 457 si->hit_total, si->total_ext); 458 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n", 459 si->ext_tree, si->zombie_tree, si->ext_node); 460 seq_puts(s, "\nBalancing F2FS Async:\n"); 461 seq_printf(s, " - DIO (R: %4d, W: %4d)\n", 462 si->nr_dio_read, si->nr_dio_write); 463 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n", 464 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta); 465 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), " 466 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n", 467 si->nr_wb_cp_data, si->nr_wb_data, 468 si->nr_flushing, si->nr_flushed, 469 si->flush_list_empty, 470 si->nr_discarding, si->nr_discarded, 471 si->nr_discard_cmd, si->undiscard_blks); 472 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), " 473 "volatile IO: %4d (Max. %4d)\n", 474 si->inmem_pages, si->aw_cnt, si->max_aw_cnt, 475 si->vw_cnt, si->max_vw_cnt); 476 seq_printf(s, " - nodes: %4d in %4d\n", 477 si->ndirty_node, si->node_pages); 478 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n", 479 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all); 480 seq_printf(s, " - datas: %4d in files:%4d\n", 481 si->ndirty_data, si->ndirty_files); 482 seq_printf(s, " - quota datas: %4d in quota files:%4d\n", 483 si->ndirty_qdata, si->nquota_files); 484 seq_printf(s, " - meta: %4d in %4d\n", 485 si->ndirty_meta, si->meta_pages); 486 seq_printf(s, " - imeta: %4d\n", 487 si->ndirty_imeta); 488 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n", 489 si->dirty_nats, si->nats, si->dirty_sits, si->sits); 490 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n", 491 si->free_nids, si->avail_nids, si->alloc_nids); 492 seq_puts(s, "\nDistribution of User Blocks:"); 493 seq_puts(s, " [ valid | invalid | free ]\n"); 494 seq_puts(s, " ["); 495 496 for (j = 0; j < si->util_valid; j++) 497 seq_putc(s, '-'); 498 seq_putc(s, '|'); 499 500 for (j = 0; j < si->util_invalid; j++) 501 seq_putc(s, '-'); 502 seq_putc(s, '|'); 503 504 for (j = 0; j < si->util_free; j++) 505 seq_putc(s, '-'); 506 seq_puts(s, "]\n\n"); 507 seq_printf(s, "IPU: %u blocks\n", si->inplace_count); 508 seq_printf(s, "SSR: %u blocks in %u segments\n", 509 si->block_count[SSR], si->segment_count[SSR]); 510 seq_printf(s, "LFS: %u blocks in %u segments\n", 511 si->block_count[LFS], si->segment_count[LFS]); 512 513 /* segment usage info */ 514 f2fs_update_sit_info(si->sbi); 515 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n", 516 si->bimodal, si->avg_vblocks); 517 518 /* memory footprint */ 519 update_mem_info(si->sbi); 520 seq_printf(s, "\nMemory: %llu KB\n", 521 (si->base_mem + si->cache_mem + si->page_mem) >> 10); 522 seq_printf(s, " - static: %llu KB\n", 523 si->base_mem >> 10); 524 seq_printf(s, " - cached: %llu KB\n", 525 si->cache_mem >> 10); 526 seq_printf(s, " - paged : %llu KB\n", 527 si->page_mem >> 10); 528 } 529 mutex_unlock(&f2fs_stat_mutex); 530 return 0; 531 } 532 533 DEFINE_SHOW_ATTRIBUTE(stat); 534 #endif 535 536 int f2fs_build_stats(struct f2fs_sb_info *sbi) 537 { 538 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 539 struct f2fs_stat_info *si; 540 int i; 541 542 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL); 543 if (!si) 544 return -ENOMEM; 545 546 si->all_area_segs = le32_to_cpu(raw_super->segment_count); 547 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit); 548 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat); 549 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa); 550 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main); 551 si->main_area_sections = le32_to_cpu(raw_super->section_count); 552 si->main_area_zones = si->main_area_sections / 553 le32_to_cpu(raw_super->secs_per_zone); 554 si->sbi = sbi; 555 sbi->stat_info = si; 556 557 atomic64_set(&sbi->total_hit_ext, 0); 558 atomic64_set(&sbi->read_hit_rbtree, 0); 559 atomic64_set(&sbi->read_hit_largest, 0); 560 atomic64_set(&sbi->read_hit_cached, 0); 561 562 atomic_set(&sbi->inline_xattr, 0); 563 atomic_set(&sbi->inline_inode, 0); 564 atomic_set(&sbi->inline_dir, 0); 565 atomic_set(&sbi->compr_inode, 0); 566 atomic64_set(&sbi->compr_blocks, 0); 567 atomic_set(&sbi->inplace_count, 0); 568 for (i = META_CP; i < META_MAX; i++) 569 atomic_set(&sbi->meta_count[i], 0); 570 571 atomic_set(&sbi->vw_cnt, 0); 572 atomic_set(&sbi->max_aw_cnt, 0); 573 atomic_set(&sbi->max_vw_cnt, 0); 574 575 mutex_lock(&f2fs_stat_mutex); 576 list_add_tail(&si->stat_list, &f2fs_stat_list); 577 mutex_unlock(&f2fs_stat_mutex); 578 579 return 0; 580 } 581 582 void f2fs_destroy_stats(struct f2fs_sb_info *sbi) 583 { 584 struct f2fs_stat_info *si = F2FS_STAT(sbi); 585 586 mutex_lock(&f2fs_stat_mutex); 587 list_del(&si->stat_list); 588 mutex_unlock(&f2fs_stat_mutex); 589 590 kfree(si); 591 } 592 593 void __init f2fs_create_root_stats(void) 594 { 595 #ifdef CONFIG_DEBUG_FS 596 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL); 597 598 debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL, 599 &stat_fops); 600 #endif 601 } 602 603 void f2fs_destroy_root_stats(void) 604 { 605 #ifdef CONFIG_DEBUG_FS 606 debugfs_remove_recursive(f2fs_debugfs_root); 607 f2fs_debugfs_root = NULL; 608 #endif 609 } 610