fs/f2fs/debug.c

   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 <[email protected]>
   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 += SEGS_PER_SEC(sbi)) {
  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_multidevice_stats(struct f2fs_sb_info *sbi)
  64 {
  65         struct f2fs_stat_info *si = F2FS_STAT(sbi);
  66         struct f2fs_dev_stats *dev_stats = si->dev_stats;
  67         int i, j;
  68
  69         if (!f2fs_is_multi_device(sbi))
  70                 return;
  71
  72         memset(dev_stats, 0, sizeof(struct f2fs_dev_stats) * sbi->s_ndevs);
  73         for (i = 0; i < sbi->s_ndevs; i++) {
  74                 unsigned int start_segno, end_segno;
  75                 block_t start_blk, end_blk;
  76
  77                 if (i == 0) {
  78                         start_blk = MAIN_BLKADDR(sbi);
  79                         end_blk = FDEV(i).end_blk + 1 - SEG0_BLKADDR(sbi);
  80                 } else {
  81                         start_blk = FDEV(i).start_blk;
  82                         end_blk = FDEV(i).end_blk + 1;
  83                 }
  84
  85                 start_segno = GET_SEGNO(sbi, start_blk);
  86                 end_segno = GET_SEGNO(sbi, end_blk);
  87
  88                 for (j = start_segno; j < end_segno; j++) {
  89                         unsigned int seg_blks, sec_blks;
  90
  91                         seg_blks = get_seg_entry(sbi, j)->valid_blocks;
  92
  93                         /* update segment stats */
  94                         if (IS_CURSEG(sbi, j))
  95                                 dev_stats[i].devstats[0][DEVSTAT_INUSE]++;
  96                         else if (seg_blks == BLKS_PER_SEG(sbi))
  97                                 dev_stats[i].devstats[0][DEVSTAT_FULL]++;
  98                         else if (seg_blks != 0)
  99                                 dev_stats[i].devstats[0][DEVSTAT_DIRTY]++;
 100                         else if (!test_bit(j, FREE_I(sbi)->free_segmap))
 101                                 dev_stats[i].devstats[0][DEVSTAT_FREE]++;
 102                         else
 103                                 dev_stats[i].devstats[0][DEVSTAT_PREFREE]++;
 104
 105                         if (!__is_large_section(sbi) ||
 106                                 (j % SEGS_PER_SEC(sbi)) != 0)
 107                                 continue;
 108
 109                         sec_blks = get_sec_entry(sbi, j)->valid_blocks;
 110
 111                         /* update section stats */
 112                         if (IS_CURSEC(sbi, GET_SEC_FROM_SEG(sbi, j)))
 113                                 dev_stats[i].devstats[1][DEVSTAT_INUSE]++;
 114                         else if (sec_blks == BLKS_PER_SEC(sbi))
 115                                 dev_stats[i].devstats[1][DEVSTAT_FULL]++;
 116                         else if (sec_blks != 0)
 117                                 dev_stats[i].devstats[1][DEVSTAT_DIRTY]++;
 118                         else if (!test_bit(GET_SEC_FROM_SEG(sbi, j),
 119                                         FREE_I(sbi)->free_secmap))
 120                                 dev_stats[i].devstats[1][DEVSTAT_FREE]++;
 121                         else
 122                                 dev_stats[i].devstats[1][DEVSTAT_PREFREE]++;
 123                 }
 124         }
 125 }
 126
 127 static void update_general_status(struct f2fs_sb_info *sbi)
 128 {
 129         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 130         struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
 131         int i;
 132
 133         /* these will be changed if online resize is done */
 134         si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
 135         si->main_area_sections = le32_to_cpu(raw_super->section_count);
 136         si->main_area_zones = si->main_area_sections /
 137                                 le32_to_cpu(raw_super->secs_per_zone);
 138
 139         /* general extent cache stats */
 140         for (i = 0; i < NR_EXTENT_CACHES; i++) {
 141                 struct extent_tree_info *eti = &sbi->extent_tree[i];
 142
 143                 si->hit_cached[i] = atomic64_read(&sbi->read_hit_cached[i]);
 144                 si->hit_rbtree[i] = atomic64_read(&sbi->read_hit_rbtree[i]);
 145                 si->total_ext[i] = atomic64_read(&sbi->total_hit_ext[i]);
 146                 si->hit_total[i] = si->hit_cached[i] + si->hit_rbtree[i];
 147                 si->ext_tree[i] = atomic_read(&eti->total_ext_tree);
 148                 si->zombie_tree[i] = atomic_read(&eti->total_zombie_tree);
 149                 si->ext_node[i] = atomic_read(&eti->total_ext_node);
 150         }
 151         /* read extent_cache only */
 152         si->hit_largest = atomic64_read(&sbi->read_hit_largest);
 153         si->hit_total[EX_READ] += si->hit_largest;
 154
 155         /* block age extent_cache only */
 156         si->allocated_data_blocks = atomic64_read(&sbi->allocated_data_blocks);
 157
 158         /* validation check of the segment numbers */
 159         si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
 160         si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
 161         si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
 162         si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
 163         si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
 164         si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
 165         si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
 166         si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
 167         si->nquota_files = sbi->nquota_files;
 168         si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
 169         si->aw_cnt = atomic_read(&sbi->atomic_files);
 170         si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
 171         si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
 172         si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
 173         si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
 174         si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
 175         si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
 176         si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
 177         si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
 178         if (SM_I(sbi)->fcc_info) {
 179                 si->nr_flushed =
 180                         atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
 181                 si->nr_flushing =
 182                         atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
 183                 si->flush_list_empty =
 184                         llist_empty(&SM_I(sbi)->fcc_info->issue_list);
 185         }
 186         if (SM_I(sbi)->dcc_info) {
 187                 si->nr_discarded =
 188                         atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
 189                 si->nr_discarding =
 190                         atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
 191                 si->nr_discard_cmd =
 192                         atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
 193                 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
 194         }
 195         si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt);
 196         si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt);
 197         si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt);
 198         spin_lock(&sbi->cprc_info.stat_lock);
 199         si->cur_ckpt_time = sbi->cprc_info.cur_time;
 200         si->peak_ckpt_time = sbi->cprc_info.peak_time;
 201         spin_unlock(&sbi->cprc_info.stat_lock);
 202         si->total_count = BLKS_TO_SEGS(sbi, (int)sbi->user_block_count);
 203         si->rsvd_segs = reserved_segments(sbi);
 204         si->overp_segs = overprovision_segments(sbi);
 205         si->valid_count = valid_user_blocks(sbi);
 206         si->discard_blks = discard_blocks(sbi);
 207         si->valid_node_count = valid_node_count(sbi);
 208         si->valid_inode_count = valid_inode_count(sbi);
 209         si->inline_xattr = atomic_read(&sbi->inline_xattr);
 210         si->inline_inode = atomic_read(&sbi->inline_inode);
 211         si->inline_dir = atomic_read(&sbi->inline_dir);
 212         si->compr_inode = atomic_read(&sbi->compr_inode);
 213         si->swapfile_inode = atomic_read(&sbi->swapfile_inode);
 214         si->compr_blocks = atomic64_read(&sbi->compr_blocks);
 215         si->append = sbi->im[APPEND_INO].ino_num;
 216         si->update = sbi->im[UPDATE_INO].ino_num;
 217         si->orphans = sbi->im[ORPHAN_INO].ino_num;
 218         si->utilization = utilization(sbi);
 219
 220         si->free_segs = free_segments(sbi);
 221         si->free_secs = free_sections(sbi);
 222         si->prefree_count = prefree_segments(sbi);
 223         si->dirty_count = dirty_segments(sbi);
 224         if (sbi->node_inode)
 225                 si->node_pages = NODE_MAPPING(sbi)->nrpages;
 226         if (sbi->meta_inode)
 227                 si->meta_pages = META_MAPPING(sbi)->nrpages;
 228 #ifdef CONFIG_F2FS_FS_COMPRESSION
 229         if (sbi->compress_inode) {
 230                 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages;
 231                 si->compress_page_hit = atomic_read(&sbi->compress_page_hit);
 232         }
 233 #endif
 234         si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
 235         si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
 236         si->sits = MAIN_SEGS(sbi);
 237         si->dirty_sits = SIT_I(sbi)->dirty_sentries;
 238         si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
 239         si->avail_nids = NM_I(sbi)->available_nids;
 240         si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
 241         si->io_skip_bggc = sbi->io_skip_bggc;
 242         si->other_skip_bggc = sbi->other_skip_bggc;
 243         si->util_free = (int)(BLKS_TO_SEGS(sbi, free_user_blocks(sbi)))
 244                 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
 245                 / 2;
 246         si->util_valid = (int)(BLKS_TO_SEGS(sbi, written_block_count(sbi)))
 247                 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
 248                 / 2;
 249         si->util_invalid = 50 - si->util_free - si->util_valid;
 250         for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
 251                 struct curseg_info *curseg = CURSEG_I(sbi, i);
 252
 253                 si->curseg[i] = curseg->segno;
 254                 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
 255                 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
 256         }
 257
 258         for (i = META_CP; i < META_MAX; i++)
 259                 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
 260
 261         for (i = 0; i < NO_CHECK_TYPE; i++) {
 262                 si->dirty_seg[i] = 0;
 263                 si->full_seg[i] = 0;
 264                 si->valid_blks[i] = 0;
 265         }
 266
 267         for (i = 0; i < MAIN_SEGS(sbi); i++) {
 268                 int blks = get_seg_entry(sbi, i)->valid_blocks;
 269                 int type = get_seg_entry(sbi, i)->type;
 270
 271                 if (!blks)
 272                         continue;
 273
 274                 if (blks == BLKS_PER_SEG(sbi))
 275                         si->full_seg[type]++;
 276                 else
 277                         si->dirty_seg[type]++;
 278                 si->valid_blks[type] += blks;
 279         }
 280
 281         update_multidevice_stats(sbi);
 282
 283         for (i = 0; i < MAX_CALL_TYPE; i++)
 284                 si->cp_call_count[i] = atomic_read(&sbi->cp_call_count[i]);
 285
 286         for (i = 0; i < 2; i++) {
 287                 si->segment_count[i] = sbi->segment_count[i];
 288                 si->block_count[i] = sbi->block_count[i];
 289         }
 290
 291         si->inplace_count = atomic_read(&sbi->inplace_count);
 292 }
 293
 294 /*
 295  * This function calculates memory footprint.
 296  */
 297 static void update_mem_info(struct f2fs_sb_info *sbi)
 298 {
 299         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 300         int i;
 301
 302         if (si->base_mem)
 303                 goto get_cache;
 304
 305         /* build stat */
 306         si->base_mem = sizeof(struct f2fs_stat_info);
 307
 308         /* build superblock */
 309         si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
 310         si->base_mem += 2 * sizeof(struct f2fs_inode_info);
 311         si->base_mem += sizeof(*sbi->ckpt);
 312
 313         /* build sm */
 314         si->base_mem += sizeof(struct f2fs_sm_info);
 315
 316         /* build sit */
 317         si->base_mem += sizeof(struct sit_info);
 318         si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
 319         si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
 320         si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
 321         si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
 322         si->base_mem += SIT_VBLOCK_MAP_SIZE;
 323         if (__is_large_section(sbi))
 324                 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
 325         si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
 326
 327         /* build free segmap */
 328         si->base_mem += sizeof(struct free_segmap_info);
 329         si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
 330         si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
 331
 332         /* build curseg */
 333         si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
 334         si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
 335
 336         /* build dirty segmap */
 337         si->base_mem += sizeof(struct dirty_seglist_info);
 338         si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
 339         si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
 340
 341         /* build nm */
 342         si->base_mem += sizeof(struct f2fs_nm_info);
 343         si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
 344         si->base_mem += F2FS_BLK_TO_BYTES(NM_I(sbi)->nat_bits_blocks);
 345         si->base_mem += NM_I(sbi)->nat_blocks *
 346                                 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
 347         si->base_mem += NM_I(sbi)->nat_blocks / 8;
 348         si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
 349
 350 get_cache:
 351         si->cache_mem = 0;
 352
 353         /* build gc */
 354         if (sbi->gc_thread)
 355                 si->cache_mem += sizeof(struct f2fs_gc_kthread);
 356
 357         /* build merge flush thread */
 358         if (SM_I(sbi)->fcc_info)
 359                 si->cache_mem += sizeof(struct flush_cmd_control);
 360         if (SM_I(sbi)->dcc_info) {
 361                 si->cache_mem += sizeof(struct discard_cmd_control);
 362                 si->cache_mem += sizeof(struct discard_cmd) *
 363                         atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
 364         }
 365
 366         /* free nids */
 367         si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
 368                                 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
 369                                 sizeof(struct free_nid);
 370         si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
 371                                 sizeof(struct nat_entry);
 372         si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
 373                                 sizeof(struct nat_entry_set);
 374         for (i = 0; i < MAX_INO_ENTRY; i++)
 375                 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
 376
 377         for (i = 0; i < NR_EXTENT_CACHES; i++) {
 378                 struct extent_tree_info *eti = &sbi->extent_tree[i];
 379
 380                 si->ext_mem[i] = atomic_read(&eti->total_ext_tree) *
 381                                                 sizeof(struct extent_tree);
 382                 si->ext_mem[i] += atomic_read(&eti->total_ext_node) *
 383                                                 sizeof(struct extent_node);
 384                 si->cache_mem += si->ext_mem[i];
 385         }
 386
 387         si->page_mem = 0;
 388         if (sbi->node_inode) {
 389                 unsigned long npages = NODE_MAPPING(sbi)->nrpages;
 390
 391                 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
 392         }
 393         if (sbi->meta_inode) {
 394                 unsigned long npages = META_MAPPING(sbi)->nrpages;
 395
 396                 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
 397         }
 398 #ifdef CONFIG_F2FS_FS_COMPRESSION
 399         if (sbi->compress_inode) {
 400                 unsigned long npages = COMPRESS_MAPPING(sbi)->nrpages;
 401
 402                 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
 403         }
 404 #endif
 405 }
 406
 407 static const char *s_flag[MAX_SBI_FLAG] = {
 408         [SBI_IS_DIRTY]          = "fs_dirty",
 409         [SBI_IS_CLOSE]          = "closing",
 410         [SBI_NEED_FSCK]         = "need_fsck",
 411         [SBI_POR_DOING]         = "recovering",
 412         [SBI_NEED_SB_WRITE]     = "sb_dirty",
 413         [SBI_NEED_CP]           = "need_cp",
 414         [SBI_IS_SHUTDOWN]       = "shutdown",
 415         [SBI_IS_RECOVERED]      = "recovered",
 416         [SBI_CP_DISABLED]       = "cp_disabled",
 417         [SBI_CP_DISABLED_QUICK] = "cp_disabled_quick",
 418         [SBI_QUOTA_NEED_FLUSH]  = "quota_need_flush",
 419         [SBI_QUOTA_SKIP_FLUSH]  = "quota_skip_flush",
 420         [SBI_QUOTA_NEED_REPAIR] = "quota_need_repair",
 421         [SBI_IS_RESIZEFS]       = "resizefs",
 422         [SBI_IS_FREEZING]       = "freezefs",
 423         [SBI_IS_WRITABLE]       = "writable",
 424 };
 425
 426 static const char *ipu_mode_names[F2FS_IPU_MAX] = {
 427         [F2FS_IPU_FORCE]        = "FORCE",
 428         [F2FS_IPU_SSR]          = "SSR",
 429         [F2FS_IPU_UTIL]         = "UTIL",
 430         [F2FS_IPU_SSR_UTIL]     = "SSR_UTIL",
 431         [F2FS_IPU_FSYNC]        = "FSYNC",
 432         [F2FS_IPU_ASYNC]        = "ASYNC",
 433         [F2FS_IPU_NOCACHE]      = "NOCACHE",
 434         [F2FS_IPU_HONOR_OPU_WRITE]      = "HONOR_OPU_WRITE",
 435 };
 436
 437 static int stat_show(struct seq_file *s, void *v)
 438 {
 439         struct f2fs_stat_info *si;
 440         int i = 0, j = 0;
 441         unsigned long flags;
 442
 443         raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
 444         list_for_each_entry(si, &f2fs_stat_list, stat_list) {
 445                 struct f2fs_sb_info *sbi = si->sbi;
 446
 447                 update_general_status(sbi);
 448
 449                 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
 450                         sbi->sb->s_bdev, i++,
 451                         f2fs_readonly(sbi->sb) ? "RO" : "RW",
 452                         is_set_ckpt_flags(sbi, CP_DISABLED_FLAG) ?
 453                         "Disabled" : (f2fs_cp_error(sbi) ? "Error" : "Good"));
 454                 if (sbi->s_flag) {
 455                         seq_puts(s, "[SBI:");
 456                         for_each_set_bit(j, &sbi->s_flag, MAX_SBI_FLAG)
 457                                 seq_printf(s, " %s", s_flag[j]);
 458                         seq_puts(s, "]\n");
 459                 }
 460                 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
 461                            si->sit_area_segs, si->nat_area_segs);
 462                 seq_printf(s, "[SSA: %d] [MAIN: %d",
 463                            si->ssa_area_segs, si->main_area_segs);
 464                 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
 465                            si->overp_segs, si->rsvd_segs);
 466                 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",
 467                                         ktime_get_boottime_seconds(),
 468                                         SIT_I(sbi)->mounted_time);
 469
 470                 seq_puts(s, "Policy:\n");
 471                 seq_puts(s, "  - IPU: [");
 472                 if (IS_F2FS_IPU_DISABLE(sbi)) {
 473                         seq_puts(s, " DISABLE");
 474                 } else {
 475                         unsigned long policy = SM_I(sbi)->ipu_policy;
 476
 477                         for_each_set_bit(j, &policy, F2FS_IPU_MAX)
 478                                 seq_printf(s, " %s", ipu_mode_names[j]);
 479                 }
 480                 seq_puts(s, " ]\n\n");
 481
 482                 if (test_opt(sbi, DISCARD))
 483                         seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
 484                                 si->utilization, si->valid_count, si->discard_blks);
 485                 else
 486                         seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
 487                                 si->utilization, si->valid_count);
 488
 489                 seq_printf(s, "  - Node: %u (Inode: %u, ",
 490                            si->valid_node_count, si->valid_inode_count);
 491                 seq_printf(s, "Other: %u)\n  - Data: %u\n",
 492                            si->valid_node_count - si->valid_inode_count,
 493                            si->valid_count - si->valid_node_count);
 494                 seq_printf(s, "  - Inline_xattr Inode: %u\n",
 495                            si->inline_xattr);
 496                 seq_printf(s, "  - Inline_data Inode: %u\n",
 497                            si->inline_inode);
 498                 seq_printf(s, "  - Inline_dentry Inode: %u\n",
 499                            si->inline_dir);
 500                 seq_printf(s, "  - Compressed Inode: %u, Blocks: %llu\n",
 501                            si->compr_inode, si->compr_blocks);
 502                 seq_printf(s, "  - Swapfile Inode: %u\n",
 503                            si->swapfile_inode);
 504                 seq_printf(s, "  - Orphan/Append/Update Inode: %u, %u, %u\n",
 505                            si->orphans, si->append, si->update);
 506                 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
 507                            si->main_area_segs, si->main_area_sections,
 508                            si->main_area_zones);
 509                 seq_printf(s, "    TYPE         %8s %8s %8s %10s %10s %10s\n",
 510                            "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
 511                 seq_printf(s, "  - COLD   data: %8d %8d %8d %10u %10u %10u\n",
 512                            si->curseg[CURSEG_COLD_DATA],
 513                            si->cursec[CURSEG_COLD_DATA],
 514                            si->curzone[CURSEG_COLD_DATA],
 515                            si->dirty_seg[CURSEG_COLD_DATA],
 516                            si->full_seg[CURSEG_COLD_DATA],
 517                            si->valid_blks[CURSEG_COLD_DATA]);
 518                 seq_printf(s, "  - WARM   data: %8d %8d %8d %10u %10u %10u\n",
 519                            si->curseg[CURSEG_WARM_DATA],
 520                            si->cursec[CURSEG_WARM_DATA],
 521                            si->curzone[CURSEG_WARM_DATA],
 522                            si->dirty_seg[CURSEG_WARM_DATA],
 523                            si->full_seg[CURSEG_WARM_DATA],
 524                            si->valid_blks[CURSEG_WARM_DATA]);
 525                 seq_printf(s, "  - HOT    data: %8d %8d %8d %10u %10u %10u\n",
 526                            si->curseg[CURSEG_HOT_DATA],
 527                            si->cursec[CURSEG_HOT_DATA],
 528                            si->curzone[CURSEG_HOT_DATA],
 529                            si->dirty_seg[CURSEG_HOT_DATA],
 530                            si->full_seg[CURSEG_HOT_DATA],
 531                            si->valid_blks[CURSEG_HOT_DATA]);
 532                 seq_printf(s, "  - Dir   dnode: %8d %8d %8d %10u %10u %10u\n",
 533                            si->curseg[CURSEG_HOT_NODE],
 534                            si->cursec[CURSEG_HOT_NODE],
 535                            si->curzone[CURSEG_HOT_NODE],
 536                            si->dirty_seg[CURSEG_HOT_NODE],
 537                            si->full_seg[CURSEG_HOT_NODE],
 538                            si->valid_blks[CURSEG_HOT_NODE]);
 539                 seq_printf(s, "  - File  dnode: %8d %8d %8d %10u %10u %10u\n",
 540                            si->curseg[CURSEG_WARM_NODE],
 541                            si->cursec[CURSEG_WARM_NODE],
 542                            si->curzone[CURSEG_WARM_NODE],
 543                            si->dirty_seg[CURSEG_WARM_NODE],
 544                            si->full_seg[CURSEG_WARM_NODE],
 545                            si->valid_blks[CURSEG_WARM_NODE]);
 546                 seq_printf(s, "  - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
 547                            si->curseg[CURSEG_COLD_NODE],
 548                            si->cursec[CURSEG_COLD_NODE],
 549                            si->curzone[CURSEG_COLD_NODE],
 550                            si->dirty_seg[CURSEG_COLD_NODE],
 551                            si->full_seg[CURSEG_COLD_NODE],
 552                            si->valid_blks[CURSEG_COLD_NODE]);
 553                 seq_printf(s, "  - Pinned file: %8d %8d %8d\n",
 554                            si->curseg[CURSEG_COLD_DATA_PINNED],
 555                            si->cursec[CURSEG_COLD_DATA_PINNED],
 556                            si->curzone[CURSEG_COLD_DATA_PINNED]);
 557                 seq_printf(s, "  - ATGC   data: %8d %8d %8d\n",
 558                            si->curseg[CURSEG_ALL_DATA_ATGC],
 559                            si->cursec[CURSEG_ALL_DATA_ATGC],
 560                            si->curzone[CURSEG_ALL_DATA_ATGC]);
 561                 seq_printf(s, "\n  - Valid: %d\n  - Dirty: %d\n",
 562                            si->main_area_segs - si->dirty_count -
 563                            si->prefree_count - si->free_segs,
 564                            si->dirty_count);
 565                 seq_printf(s, "  - Prefree: %d\n  - Free: %d (%d)\n\n",
 566                            si->prefree_count, si->free_segs, si->free_secs);
 567                 if (f2fs_is_multi_device(sbi)) {
 568                         seq_puts(s, "Multidevice stats:\n");
 569                         seq_printf(s, "  [seg:   %8s %8s %8s %8s %8s]",
 570                                         "inuse", "dirty", "full", "free", "prefree");
 571                         if (__is_large_section(sbi))
 572                                 seq_printf(s, " [sec:   %8s %8s %8s %8s %8s]\n",
 573                                         "inuse", "dirty", "full", "free", "prefree");
 574                         else
 575                                 seq_puts(s, "\n");
 576
 577                         for (i = 0; i < sbi->s_ndevs; i++) {
 578                                 seq_printf(s, "  #%-2d     %8u %8u %8u %8u %8u", i,
 579                                         si->dev_stats[i].devstats[0][DEVSTAT_INUSE],
 580                                         si->dev_stats[i].devstats[0][DEVSTAT_DIRTY],
 581                                         si->dev_stats[i].devstats[0][DEVSTAT_FULL],
 582                                         si->dev_stats[i].devstats[0][DEVSTAT_FREE],
 583                                         si->dev_stats[i].devstats[0][DEVSTAT_PREFREE]);
 584                                 if (!__is_large_section(sbi)) {
 585                                         seq_puts(s, "\n");
 586                                         continue;
 587                                 }
 588                                 seq_printf(s, "          %8u %8u %8u %8u %8u\n",
 589                                         si->dev_stats[i].devstats[1][DEVSTAT_INUSE],
 590                                         si->dev_stats[i].devstats[1][DEVSTAT_DIRTY],
 591                                         si->dev_stats[i].devstats[1][DEVSTAT_FULL],
 592                                         si->dev_stats[i].devstats[1][DEVSTAT_FREE],
 593                                         si->dev_stats[i].devstats[1][DEVSTAT_PREFREE]);
 594                         }
 595                         seq_puts(s, "\n");
 596                 }
 597                 seq_printf(s, "CP calls: %d (BG: %d)\n",
 598                            si->cp_call_count[TOTAL_CALL],
 599                            si->cp_call_count[BACKGROUND]);
 600                 seq_printf(s, "CP count: %d\n", si->cp_count);
 601                 seq_printf(s, "  - cp blocks : %u\n", si->meta_count[META_CP]);
 602                 seq_printf(s, "  - sit blocks : %u\n",
 603                                 si->meta_count[META_SIT]);
 604                 seq_printf(s, "  - nat blocks : %u\n",
 605                                 si->meta_count[META_NAT]);
 606                 seq_printf(s, "  - ssa blocks : %u\n",
 607                                 si->meta_count[META_SSA]);
 608                 seq_puts(s, "CP merge:\n");
 609                 seq_printf(s, "  - Queued : %4d\n", si->nr_queued_ckpt);
 610                 seq_printf(s, "  - Issued : %4d\n", si->nr_issued_ckpt);
 611                 seq_printf(s, "  - Total : %4d\n", si->nr_total_ckpt);
 612                 seq_printf(s, "  - Cur time : %4d(ms)\n", si->cur_ckpt_time);
 613                 seq_printf(s, "  - Peak time : %4d(ms)\n", si->peak_ckpt_time);
 614                 seq_printf(s, "GC calls: %d (gc_thread: %d)\n",
 615                            si->gc_call_count[BACKGROUND] +
 616                            si->gc_call_count[FOREGROUND],
 617                            si->gc_call_count[BACKGROUND]);
 618                 if (__is_large_section(sbi)) {
 619                         seq_printf(s, "  - data sections : %d (BG: %d)\n",
 620                                         si->gc_secs[DATA][BG_GC] + si->gc_secs[DATA][FG_GC],
 621                                         si->gc_secs[DATA][BG_GC]);
 622                         seq_printf(s, "  - node sections : %d (BG: %d)\n",
 623                                         si->gc_secs[NODE][BG_GC] + si->gc_secs[NODE][FG_GC],
 624                                         si->gc_secs[NODE][BG_GC]);
 625                 }
 626                 seq_printf(s, "  - data segments : %d (BG: %d)\n",
 627                                 si->gc_segs[DATA][BG_GC] + si->gc_segs[DATA][FG_GC],
 628                                 si->gc_segs[DATA][BG_GC]);
 629                 seq_printf(s, "  - node segments : %d (BG: %d)\n",
 630                                 si->gc_segs[NODE][BG_GC] + si->gc_segs[NODE][FG_GC],
 631                                 si->gc_segs[NODE][BG_GC]);
 632                 seq_puts(s, "  - Reclaimed segs :\n");
 633                 seq_printf(s, "    - Normal : %d\n", sbi->gc_reclaimed_segs[GC_NORMAL]);
 634                 seq_printf(s, "    - Idle CB : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_CB]);
 635                 seq_printf(s, "    - Idle Greedy : %d\n",
 636                                 sbi->gc_reclaimed_segs[GC_IDLE_GREEDY]);
 637                 seq_printf(s, "    - Idle AT : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_AT]);
 638                 seq_printf(s, "    - Urgent High : %d\n",
 639                                 sbi->gc_reclaimed_segs[GC_URGENT_HIGH]);
 640                 seq_printf(s, "    - Urgent Mid : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_MID]);
 641                 seq_printf(s, "    - Urgent Low : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_LOW]);
 642                 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
 643                                 si->bg_data_blks + si->bg_node_blks);
 644                 seq_printf(s, "  - data blocks : %d (%d)\n", si->data_blks,
 645                                 si->bg_data_blks);
 646                 seq_printf(s, "  - node blocks : %d (%d)\n", si->node_blks,
 647                                 si->bg_node_blks);
 648                 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
 649                                 si->io_skip_bggc, si->other_skip_bggc);
 650                 seq_puts(s, "\nExtent Cache (Read):\n");
 651                 seq_printf(s, "  - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
 652                                 si->hit_largest, si->hit_cached[EX_READ],
 653                                 si->hit_rbtree[EX_READ]);
 654                 seq_printf(s, "  - Hit Ratio: %llu%% (%llu / %llu)\n",
 655                                 !si->total_ext[EX_READ] ? 0 :
 656                                 div64_u64(si->hit_total[EX_READ] * 100,
 657                                 si->total_ext[EX_READ]),
 658                                 si->hit_total[EX_READ], si->total_ext[EX_READ]);
 659                 seq_printf(s, "  - Inner Struct Count: tree: %d(%d), node: %d\n",
 660                                 si->ext_tree[EX_READ], si->zombie_tree[EX_READ],
 661                                 si->ext_node[EX_READ]);
 662                 seq_puts(s, "\nExtent Cache (Block Age):\n");
 663                 seq_printf(s, "  - Allocated Data Blocks: %llu\n",
 664                                 si->allocated_data_blocks);
 665                 seq_printf(s, "  - Hit Count: L1:%llu L2:%llu\n",
 666                                 si->hit_cached[EX_BLOCK_AGE],
 667                                 si->hit_rbtree[EX_BLOCK_AGE]);
 668                 seq_printf(s, "  - Hit Ratio: %llu%% (%llu / %llu)\n",
 669                                 !si->total_ext[EX_BLOCK_AGE] ? 0 :
 670                                 div64_u64(si->hit_total[EX_BLOCK_AGE] * 100,
 671                                 si->total_ext[EX_BLOCK_AGE]),
 672                                 si->hit_total[EX_BLOCK_AGE],
 673                                 si->total_ext[EX_BLOCK_AGE]);
 674                 seq_printf(s, "  - Inner Struct Count: tree: %d(%d), node: %d\n",
 675                                 si->ext_tree[EX_BLOCK_AGE],
 676                                 si->zombie_tree[EX_BLOCK_AGE],
 677                                 si->ext_node[EX_BLOCK_AGE]);
 678                 seq_puts(s, "\nBalancing F2FS Async:\n");
 679                 seq_printf(s, "  - DIO (R: %4d, W: %4d)\n",
 680                            si->nr_dio_read, si->nr_dio_write);
 681                 seq_printf(s, "  - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
 682                            si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
 683                 seq_printf(s, "  - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), ",
 684                            si->nr_wb_cp_data, si->nr_wb_data,
 685                            si->nr_flushing, si->nr_flushed,
 686                            si->flush_list_empty);
 687                 seq_printf(s, "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
 688                            si->nr_discarding, si->nr_discarded,
 689                            si->nr_discard_cmd, si->undiscard_blks);
 690                 seq_printf(s, "  - atomic IO: %4d (Max. %4d)\n",
 691                            si->aw_cnt, si->max_aw_cnt);
 692                 seq_printf(s, "  - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit);
 693                 seq_printf(s, "  - nodes: %4d in %4d\n",
 694                            si->ndirty_node, si->node_pages);
 695                 seq_printf(s, "  - dents: %4d in dirs:%4d (%4d)\n",
 696                            si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
 697                 seq_printf(s, "  - data: %4d in files:%4d\n",
 698                            si->ndirty_data, si->ndirty_files);
 699                 seq_printf(s, "  - quota data: %4d in quota files:%4d\n",
 700                            si->ndirty_qdata, si->nquota_files);
 701                 seq_printf(s, "  - meta: %4d in %4d\n",
 702                            si->ndirty_meta, si->meta_pages);
 703                 seq_printf(s, "  - imeta: %4d\n",
 704                            si->ndirty_imeta);
 705                 seq_printf(s, "  - fsync mark: %4lld\n",
 706                            percpu_counter_sum_positive(
 707                                         &sbi->rf_node_block_count));
 708                 seq_printf(s, "  - NATs: %9d/%9d\n  - SITs: %9d/%9d\n",
 709                            si->dirty_nats, si->nats, si->dirty_sits, si->sits);
 710                 seq_printf(s, "  - free_nids: %9d/%9d\n  - alloc_nids: %9d\n",
 711                            si->free_nids, si->avail_nids, si->alloc_nids);
 712                 seq_puts(s, "\nDistribution of User Blocks:");
 713                 seq_puts(s, " [ valid | invalid | free ]\n");
 714                 seq_puts(s, "  [");
 715
 716                 for (j = 0; j < si->util_valid; j++)
 717                         seq_putc(s, '-');
 718                 seq_putc(s, '|');
 719
 720                 for (j = 0; j < si->util_invalid; j++)
 721                         seq_putc(s, '-');
 722                 seq_putc(s, '|');
 723
 724                 for (j = 0; j < si->util_free; j++)
 725                         seq_putc(s, '-');
 726                 seq_puts(s, "]\n\n");
 727                 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
 728                 seq_printf(s, "SSR: %u blocks in %u segments\n",
 729                            si->block_count[SSR], si->segment_count[SSR]);
 730                 seq_printf(s, "LFS: %u blocks in %u segments\n",
 731                            si->block_count[LFS], si->segment_count[LFS]);
 732
 733                 /* segment usage info */
 734                 f2fs_update_sit_info(sbi);
 735                 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
 736                            si->bimodal, si->avg_vblocks);
 737
 738                 /* memory footprint */
 739                 update_mem_info(sbi);
 740                 seq_printf(s, "\nMemory: %llu KB\n",
 741                         (si->base_mem + si->cache_mem + si->page_mem) >> 10);
 742                 seq_printf(s, "  - static: %llu KB\n",
 743                                 si->base_mem >> 10);
 744                 seq_printf(s, "  - cached all: %llu KB\n",
 745                                 si->cache_mem >> 10);
 746                 seq_printf(s, "  - read extent cache: %llu KB\n",
 747                                 si->ext_mem[EX_READ] >> 10);
 748                 seq_printf(s, "  - block age extent cache: %llu KB\n",
 749                                 si->ext_mem[EX_BLOCK_AGE] >> 10);
 750                 seq_printf(s, "  - paged : %llu KB\n",
 751                                 si->page_mem >> 10);
 752         }
 753         raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
 754         return 0;
 755 }
 756
 757 DEFINE_SHOW_ATTRIBUTE(stat);
 758 #endif
 759
 760 int f2fs_build_stats(struct f2fs_sb_info *sbi)
 761 {
 762         struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
 763         struct f2fs_stat_info *si;
 764         struct f2fs_dev_stats *dev_stats;
 765         unsigned long flags;
 766         int i;
 767
 768         si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
 769         if (!si)
 770                 return -ENOMEM;
 771
 772         dev_stats = f2fs_kzalloc(sbi, sizeof(struct f2fs_dev_stats) *
 773                                                 sbi->s_ndevs, GFP_KERNEL);
 774         if (!dev_stats) {
 775                 kfree(si);
 776                 return -ENOMEM;
 777         }
 778
 779         si->dev_stats = dev_stats;
 780
 781         si->all_area_segs = le32_to_cpu(raw_super->segment_count);
 782         si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
 783         si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
 784         si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
 785         si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
 786         si->main_area_sections = le32_to_cpu(raw_super->section_count);
 787         si->main_area_zones = si->main_area_sections /
 788                                 le32_to_cpu(raw_super->secs_per_zone);
 789         si->sbi = sbi;
 790         sbi->stat_info = si;
 791
 792         /* general extent cache stats */
 793         for (i = 0; i < NR_EXTENT_CACHES; i++) {
 794                 atomic64_set(&sbi->total_hit_ext[i], 0);
 795                 atomic64_set(&sbi->read_hit_rbtree[i], 0);
 796                 atomic64_set(&sbi->read_hit_cached[i], 0);
 797         }
 798
 799         /* read extent_cache only */
 800         atomic64_set(&sbi->read_hit_largest, 0);
 801
 802         atomic_set(&sbi->inline_xattr, 0);
 803         atomic_set(&sbi->inline_inode, 0);
 804         atomic_set(&sbi->inline_dir, 0);
 805         atomic_set(&sbi->compr_inode, 0);
 806         atomic64_set(&sbi->compr_blocks, 0);
 807         atomic_set(&sbi->swapfile_inode, 0);
 808         atomic_set(&sbi->atomic_files, 0);
 809         atomic_set(&sbi->inplace_count, 0);
 810         for (i = META_CP; i < META_MAX; i++)
 811                 atomic_set(&sbi->meta_count[i], 0);
 812         for (i = 0; i < MAX_CALL_TYPE; i++)
 813                 atomic_set(&sbi->cp_call_count[i], 0);
 814
 815         atomic_set(&sbi->max_aw_cnt, 0);
 816
 817         raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
 818         list_add_tail(&si->stat_list, &f2fs_stat_list);
 819         raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
 820
 821         return 0;
 822 }
 823
 824 void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
 825 {
 826         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 827         unsigned long flags;
 828
 829         raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
 830         list_del(&si->stat_list);
 831         raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
 832
 833         kfree(si->dev_stats);
 834         kfree(si);
 835 }
 836
 837 void __init f2fs_create_root_stats(void)
 838 {
 839 #ifdef CONFIG_DEBUG_FS
 840         f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
 841
 842         debugfs_create_file("status", 0444, f2fs_debugfs_root, NULL,
 843                             &stat_fops);
 844 #endif
 845 }
 846
 847 void f2fs_destroy_root_stats(void)
 848 {
 849 #ifdef CONFIG_DEBUG_FS
 850         debugfs_remove_recursive(f2fs_debugfs_root);
 851         f2fs_debugfs_root = NULL;
 852 #endif
 853 }