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 #ifdef CONFIG_F2FS_FS_COMPRESSION 156 if (sbi->compress_inode) { 157 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages; 158 si->compress_page_hit = atomic_read(&sbi->compress_page_hit); 159 } 160 #endif 161 si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT]; 162 si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT]; 163 si->sits = MAIN_SEGS(sbi); 164 si->dirty_sits = SIT_I(sbi)->dirty_sentries; 165 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID]; 166 si->avail_nids = NM_I(sbi)->available_nids; 167 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID]; 168 si->io_skip_bggc = sbi->io_skip_bggc; 169 si->other_skip_bggc = sbi->other_skip_bggc; 170 si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC]; 171 si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC]; 172 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg) 173 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 174 / 2; 175 si->util_valid = (int)(written_block_count(sbi) >> 176 sbi->log_blocks_per_seg) 177 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) 178 / 2; 179 si->util_invalid = 50 - si->util_free - si->util_valid; 180 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { 181 struct curseg_info *curseg = CURSEG_I(sbi, i); 182 183 si->curseg[i] = curseg->segno; 184 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno); 185 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]); 186 } 187 188 for (i = META_CP; i < META_MAX; i++) 189 si->meta_count[i] = atomic_read(&sbi->meta_count[i]); 190 191 for (i = 0; i < NO_CHECK_TYPE; i++) { 192 si->dirty_seg[i] = 0; 193 si->full_seg[i] = 0; 194 si->valid_blks[i] = 0; 195 } 196 197 for (i = 0; i < MAIN_SEGS(sbi); i++) { 198 int blks = get_seg_entry(sbi, i)->valid_blocks; 199 int type = get_seg_entry(sbi, i)->type; 200 201 if (!blks) 202 continue; 203 204 if (blks == sbi->blocks_per_seg) 205 si->full_seg[type]++; 206 else 207 si->dirty_seg[type]++; 208 si->valid_blks[type] += blks; 209 } 210 211 for (i = 0; i < 2; i++) { 212 si->segment_count[i] = sbi->segment_count[i]; 213 si->block_count[i] = sbi->block_count[i]; 214 } 215 216 si->inplace_count = atomic_read(&sbi->inplace_count); 217 } 218 219 /* 220 * This function calculates memory footprint. 221 */ 222 static void update_mem_info(struct f2fs_sb_info *sbi) 223 { 224 struct f2fs_stat_info *si = F2FS_STAT(sbi); 225 int i; 226 227 if (si->base_mem) 228 goto get_cache; 229 230 /* build stat */ 231 si->base_mem = sizeof(struct f2fs_stat_info); 232 233 /* build superblock */ 234 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize; 235 si->base_mem += 2 * sizeof(struct f2fs_inode_info); 236 si->base_mem += sizeof(*sbi->ckpt); 237 238 /* build sm */ 239 si->base_mem += sizeof(struct f2fs_sm_info); 240 241 /* build sit */ 242 si->base_mem += sizeof(struct sit_info); 243 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry); 244 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 245 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 246 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); 247 si->base_mem += SIT_VBLOCK_MAP_SIZE; 248 if (__is_large_section(sbi)) 249 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry); 250 si->base_mem += __bitmap_size(sbi, SIT_BITMAP); 251 252 /* build free segmap */ 253 si->base_mem += sizeof(struct free_segmap_info); 254 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); 255 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 256 257 /* build curseg */ 258 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE; 259 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE; 260 261 /* build dirty segmap */ 262 si->base_mem += sizeof(struct dirty_seglist_info); 263 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi)); 264 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); 265 266 /* build nm */ 267 si->base_mem += sizeof(struct f2fs_nm_info); 268 si->base_mem += __bitmap_size(sbi, NAT_BITMAP); 269 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS); 270 si->base_mem += NM_I(sbi)->nat_blocks * 271 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK); 272 si->base_mem += NM_I(sbi)->nat_blocks / 8; 273 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short); 274 275 get_cache: 276 si->cache_mem = 0; 277 278 /* build gc */ 279 if (sbi->gc_thread) 280 si->cache_mem += sizeof(struct f2fs_gc_kthread); 281 282 /* build merge flush thread */ 283 if (SM_I(sbi)->fcc_info) 284 si->cache_mem += sizeof(struct flush_cmd_control); 285 if (SM_I(sbi)->dcc_info) { 286 si->cache_mem += sizeof(struct discard_cmd_control); 287 si->cache_mem += sizeof(struct discard_cmd) * 288 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt); 289 } 290 291 /* free nids */ 292 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] + 293 NM_I(sbi)->nid_cnt[PREALLOC_NID]) * 294 sizeof(struct free_nid); 295 si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] * 296 sizeof(struct nat_entry); 297 si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] * 298 sizeof(struct nat_entry_set); 299 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages); 300 for (i = 0; i < MAX_INO_ENTRY; i++) 301 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry); 302 si->cache_mem += atomic_read(&sbi->total_ext_tree) * 303 sizeof(struct extent_tree); 304 si->cache_mem += atomic_read(&sbi->total_ext_node) * 305 sizeof(struct extent_node); 306 307 si->page_mem = 0; 308 if (sbi->node_inode) { 309 unsigned npages = NODE_MAPPING(sbi)->nrpages; 310 311 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 312 } 313 if (sbi->meta_inode) { 314 unsigned npages = META_MAPPING(sbi)->nrpages; 315 316 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 317 } 318 #ifdef CONFIG_F2FS_FS_COMPRESSION 319 if (sbi->compress_inode) { 320 unsigned npages = COMPRESS_MAPPING(sbi)->nrpages; 321 si->page_mem += (unsigned long long)npages << PAGE_SHIFT; 322 } 323 #endif 324 } 325 326 static int stat_show(struct seq_file *s, void *v) 327 { 328 struct f2fs_stat_info *si; 329 int i = 0; 330 int j; 331 332 mutex_lock(&f2fs_stat_mutex); 333 list_for_each_entry(si, &f2fs_stat_list, stat_list) { 334 update_general_status(si->sbi); 335 336 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n", 337 si->sbi->sb->s_bdev, i++, 338 f2fs_readonly(si->sbi->sb) ? "RO": "RW", 339 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ? 340 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good")); 341 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ", 342 si->sit_area_segs, si->nat_area_segs); 343 seq_printf(s, "[SSA: %d] [MAIN: %d", 344 si->ssa_area_segs, si->main_area_segs); 345 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n", 346 si->overp_segs, si->rsvd_segs); 347 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n", 348 ktime_get_boottime_seconds(), 349 SIT_I(si->sbi)->mounted_time); 350 if (test_opt(si->sbi, DISCARD)) 351 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n", 352 si->utilization, si->valid_count, si->discard_blks); 353 else 354 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n", 355 si->utilization, si->valid_count); 356 357 seq_printf(s, " - Node: %u (Inode: %u, ", 358 si->valid_node_count, si->valid_inode_count); 359 seq_printf(s, "Other: %u)\n - Data: %u\n", 360 si->valid_node_count - si->valid_inode_count, 361 si->valid_count - si->valid_node_count); 362 seq_printf(s, " - Inline_xattr Inode: %u\n", 363 si->inline_xattr); 364 seq_printf(s, " - Inline_data Inode: %u\n", 365 si->inline_inode); 366 seq_printf(s, " - Inline_dentry Inode: %u\n", 367 si->inline_dir); 368 seq_printf(s, " - Compressed Inode: %u, Blocks: %llu\n", 369 si->compr_inode, si->compr_blocks); 370 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n", 371 si->orphans, si->append, si->update); 372 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n", 373 si->main_area_segs, si->main_area_sections, 374 si->main_area_zones); 375 seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n", 376 "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk"); 377 seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n", 378 si->curseg[CURSEG_COLD_DATA], 379 si->cursec[CURSEG_COLD_DATA], 380 si->curzone[CURSEG_COLD_DATA], 381 si->dirty_seg[CURSEG_COLD_DATA], 382 si->full_seg[CURSEG_COLD_DATA], 383 si->valid_blks[CURSEG_COLD_DATA]); 384 seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n", 385 si->curseg[CURSEG_WARM_DATA], 386 si->cursec[CURSEG_WARM_DATA], 387 si->curzone[CURSEG_WARM_DATA], 388 si->dirty_seg[CURSEG_WARM_DATA], 389 si->full_seg[CURSEG_WARM_DATA], 390 si->valid_blks[CURSEG_WARM_DATA]); 391 seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n", 392 si->curseg[CURSEG_HOT_DATA], 393 si->cursec[CURSEG_HOT_DATA], 394 si->curzone[CURSEG_HOT_DATA], 395 si->dirty_seg[CURSEG_HOT_DATA], 396 si->full_seg[CURSEG_HOT_DATA], 397 si->valid_blks[CURSEG_HOT_DATA]); 398 seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n", 399 si->curseg[CURSEG_HOT_NODE], 400 si->cursec[CURSEG_HOT_NODE], 401 si->curzone[CURSEG_HOT_NODE], 402 si->dirty_seg[CURSEG_HOT_NODE], 403 si->full_seg[CURSEG_HOT_NODE], 404 si->valid_blks[CURSEG_HOT_NODE]); 405 seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n", 406 si->curseg[CURSEG_WARM_NODE], 407 si->cursec[CURSEG_WARM_NODE], 408 si->curzone[CURSEG_WARM_NODE], 409 si->dirty_seg[CURSEG_WARM_NODE], 410 si->full_seg[CURSEG_WARM_NODE], 411 si->valid_blks[CURSEG_WARM_NODE]); 412 seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n", 413 si->curseg[CURSEG_COLD_NODE], 414 si->cursec[CURSEG_COLD_NODE], 415 si->curzone[CURSEG_COLD_NODE], 416 si->dirty_seg[CURSEG_COLD_NODE], 417 si->full_seg[CURSEG_COLD_NODE], 418 si->valid_blks[CURSEG_COLD_NODE]); 419 seq_printf(s, " - Pinned file: %8d %8d %8d\n", 420 si->curseg[CURSEG_COLD_DATA_PINNED], 421 si->cursec[CURSEG_COLD_DATA_PINNED], 422 si->curzone[CURSEG_COLD_DATA_PINNED]); 423 seq_printf(s, " - ATGC data: %8d %8d %8d\n", 424 si->curseg[CURSEG_ALL_DATA_ATGC], 425 si->cursec[CURSEG_ALL_DATA_ATGC], 426 si->curzone[CURSEG_ALL_DATA_ATGC]); 427 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n", 428 si->main_area_segs - si->dirty_count - 429 si->prefree_count - si->free_segs, 430 si->dirty_count); 431 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n", 432 si->prefree_count, si->free_segs, si->free_secs); 433 seq_printf(s, "CP calls: %d (BG: %d)\n", 434 si->cp_count, si->bg_cp_count); 435 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]); 436 seq_printf(s, " - sit blocks : %u\n", 437 si->meta_count[META_SIT]); 438 seq_printf(s, " - nat blocks : %u\n", 439 si->meta_count[META_NAT]); 440 seq_printf(s, " - ssa blocks : %u\n", 441 si->meta_count[META_SSA]); 442 seq_printf(s, "CP merge (Queued: %4d, Issued: %4d, Total: %4d, " 443 "Cur time: %4d(ms), Peak time: %4d(ms))\n", 444 si->nr_queued_ckpt, si->nr_issued_ckpt, 445 si->nr_total_ckpt, si->cur_ckpt_time, 446 si->peak_ckpt_time); 447 seq_printf(s, "GC calls: %d (BG: %d)\n", 448 si->call_count, si->bg_gc); 449 seq_printf(s, " - data segments : %d (%d)\n", 450 si->data_segs, si->bg_data_segs); 451 seq_printf(s, " - node segments : %d (%d)\n", 452 si->node_segs, si->bg_node_segs); 453 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks, 454 si->bg_data_blks + si->bg_node_blks); 455 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks, 456 si->bg_data_blks); 457 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks, 458 si->bg_node_blks); 459 seq_printf(s, "Skipped : atomic write %llu (%llu)\n", 460 si->skipped_atomic_files[BG_GC] + 461 si->skipped_atomic_files[FG_GC], 462 si->skipped_atomic_files[BG_GC]); 463 seq_printf(s, "BG skip : IO: %u, Other: %u\n", 464 si->io_skip_bggc, si->other_skip_bggc); 465 seq_puts(s, "\nExtent Cache:\n"); 466 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n", 467 si->hit_largest, si->hit_cached, 468 si->hit_rbtree); 469 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n", 470 !si->total_ext ? 0 : 471 div64_u64(si->hit_total * 100, si->total_ext), 472 si->hit_total, si->total_ext); 473 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n", 474 si->ext_tree, si->zombie_tree, si->ext_node); 475 seq_puts(s, "\nBalancing F2FS Async:\n"); 476 seq_printf(s, " - DIO (R: %4d, W: %4d)\n", 477 si->nr_dio_read, si->nr_dio_write); 478 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n", 479 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta); 480 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), " 481 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n", 482 si->nr_wb_cp_data, si->nr_wb_data, 483 si->nr_flushing, si->nr_flushed, 484 si->flush_list_empty, 485 si->nr_discarding, si->nr_discarded, 486 si->nr_discard_cmd, si->undiscard_blks); 487 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), " 488 "volatile IO: %4d (Max. %4d)\n", 489 si->inmem_pages, si->aw_cnt, si->max_aw_cnt, 490 si->vw_cnt, si->max_vw_cnt); 491 seq_printf(s, " - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit); 492 seq_printf(s, " - nodes: %4d in %4d\n", 493 si->ndirty_node, si->node_pages); 494 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n", 495 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all); 496 seq_printf(s, " - datas: %4d in files:%4d\n", 497 si->ndirty_data, si->ndirty_files); 498 seq_printf(s, " - quota datas: %4d in quota files:%4d\n", 499 si->ndirty_qdata, si->nquota_files); 500 seq_printf(s, " - meta: %4d in %4d\n", 501 si->ndirty_meta, si->meta_pages); 502 seq_printf(s, " - imeta: %4d\n", 503 si->ndirty_imeta); 504 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n", 505 si->dirty_nats, si->nats, si->dirty_sits, si->sits); 506 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n", 507 si->free_nids, si->avail_nids, si->alloc_nids); 508 seq_puts(s, "\nDistribution of User Blocks:"); 509 seq_puts(s, " [ valid | invalid | free ]\n"); 510 seq_puts(s, " ["); 511 512 for (j = 0; j < si->util_valid; j++) 513 seq_putc(s, '-'); 514 seq_putc(s, '|'); 515 516 for (j = 0; j < si->util_invalid; j++) 517 seq_putc(s, '-'); 518 seq_putc(s, '|'); 519 520 for (j = 0; j < si->util_free; j++) 521 seq_putc(s, '-'); 522 seq_puts(s, "]\n\n"); 523 seq_printf(s, "IPU: %u blocks\n", si->inplace_count); 524 seq_printf(s, "SSR: %u blocks in %u segments\n", 525 si->block_count[SSR], si->segment_count[SSR]); 526 seq_printf(s, "LFS: %u blocks in %u segments\n", 527 si->block_count[LFS], si->segment_count[LFS]); 528 529 /* segment usage info */ 530 f2fs_update_sit_info(si->sbi); 531 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n", 532 si->bimodal, si->avg_vblocks); 533 534 /* memory footprint */ 535 update_mem_info(si->sbi); 536 seq_printf(s, "\nMemory: %llu KB\n", 537 (si->base_mem + si->cache_mem + si->page_mem) >> 10); 538 seq_printf(s, " - static: %llu KB\n", 539 si->base_mem >> 10); 540 seq_printf(s, " - cached: %llu KB\n", 541 si->cache_mem >> 10); 542 seq_printf(s, " - paged : %llu KB\n", 543 si->page_mem >> 10); 544 } 545 mutex_unlock(&f2fs_stat_mutex); 546 return 0; 547 } 548 549 DEFINE_SHOW_ATTRIBUTE(stat); 550 #endif 551 552 int f2fs_build_stats(struct f2fs_sb_info *sbi) 553 { 554 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); 555 struct f2fs_stat_info *si; 556 int i; 557 558 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL); 559 if (!si) 560 return -ENOMEM; 561 562 si->all_area_segs = le32_to_cpu(raw_super->segment_count); 563 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit); 564 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat); 565 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa); 566 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main); 567 si->main_area_sections = le32_to_cpu(raw_super->section_count); 568 si->main_area_zones = si->main_area_sections / 569 le32_to_cpu(raw_super->secs_per_zone); 570 si->sbi = sbi; 571 sbi->stat_info = si; 572 573 atomic64_set(&sbi->total_hit_ext, 0); 574 atomic64_set(&sbi->read_hit_rbtree, 0); 575 atomic64_set(&sbi->read_hit_largest, 0); 576 atomic64_set(&sbi->read_hit_cached, 0); 577 578 atomic_set(&sbi->inline_xattr, 0); 579 atomic_set(&sbi->inline_inode, 0); 580 atomic_set(&sbi->inline_dir, 0); 581 atomic_set(&sbi->compr_inode, 0); 582 atomic64_set(&sbi->compr_blocks, 0); 583 atomic_set(&sbi->inplace_count, 0); 584 for (i = META_CP; i < META_MAX; i++) 585 atomic_set(&sbi->meta_count[i], 0); 586 587 atomic_set(&sbi->vw_cnt, 0); 588 atomic_set(&sbi->max_aw_cnt, 0); 589 atomic_set(&sbi->max_vw_cnt, 0); 590 591 mutex_lock(&f2fs_stat_mutex); 592 list_add_tail(&si->stat_list, &f2fs_stat_list); 593 mutex_unlock(&f2fs_stat_mutex); 594 595 return 0; 596 } 597 598 void f2fs_destroy_stats(struct f2fs_sb_info *sbi) 599 { 600 struct f2fs_stat_info *si = F2FS_STAT(sbi); 601 602 mutex_lock(&f2fs_stat_mutex); 603 list_del(&si->stat_list); 604 mutex_unlock(&f2fs_stat_mutex); 605 606 kfree(si); 607 } 608 609 void __init f2fs_create_root_stats(void) 610 { 611 #ifdef CONFIG_DEBUG_FS 612 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL); 613 614 debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL, 615 &stat_fops); 616 #endif 617 } 618 619 void f2fs_destroy_root_stats(void) 620 { 621 #ifdef CONFIG_DEBUG_FS 622 debugfs_remove_recursive(f2fs_debugfs_root); 623 f2fs_debugfs_root = NULL; 624 #endif 625 } 626