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 <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_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 += 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         /* general extent cache stats */
  76         for (i = 0; i < NR_EXTENT_CACHES; i++) {
  77                 struct extent_tree_info *eti = &sbi->extent_tree[i];
  78
  79                 si->hit_cached[i] = atomic64_read(&sbi->read_hit_cached[i]);
  80                 si->hit_rbtree[i] = atomic64_read(&sbi->read_hit_rbtree[i]);
  81                 si->total_ext[i] = atomic64_read(&sbi->total_hit_ext[i]);
  82                 si->hit_total[i] = si->hit_cached[i] + si->hit_rbtree[i];
  83                 si->ext_tree[i] = atomic_read(&eti->total_ext_tree);
  84                 si->zombie_tree[i] = atomic_read(&eti->total_zombie_tree);
  85                 si->ext_node[i] = atomic_read(&eti->total_ext_node);
  86         }
  87         /* read extent_cache only */
  88         si->hit_largest = atomic64_read(&sbi->read_hit_largest);
  89         si->hit_total[EX_READ] += si->hit_largest;
  90
  91         /* validation check of the segment numbers */
  92         si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
  93         si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
  94         si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
  95         si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
  96         si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
  97         si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
  98         si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
  99         si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
 100         si->nquota_files = sbi->nquota_files;
 101         si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
 102         si->aw_cnt = atomic_read(&sbi->atomic_files);
 103         si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
 104         si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
 105         si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
 106         si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
 107         si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
 108         si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
 109         si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
 110         si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
 111         if (SM_I(sbi)->fcc_info) {
 112                 si->nr_flushed =
 113                         atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
 114                 si->nr_flushing =
 115                         atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
 116                 si->flush_list_empty =
 117                         llist_empty(&SM_I(sbi)->fcc_info->issue_list);
 118         }
 119         if (SM_I(sbi)->dcc_info) {
 120                 si->nr_discarded =
 121                         atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
 122                 si->nr_discarding =
 123                         atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
 124                 si->nr_discard_cmd =
 125                         atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
 126                 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
 127         }
 128         si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt);
 129         si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt);
 130         si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt);
 131         spin_lock(&sbi->cprc_info.stat_lock);
 132         si->cur_ckpt_time = sbi->cprc_info.cur_time;
 133         si->peak_ckpt_time = sbi->cprc_info.peak_time;
 134         spin_unlock(&sbi->cprc_info.stat_lock);
 135         si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
 136         si->rsvd_segs = reserved_segments(sbi);
 137         si->overp_segs = overprovision_segments(sbi);
 138         si->valid_count = valid_user_blocks(sbi);
 139         si->discard_blks = discard_blocks(sbi);
 140         si->valid_node_count = valid_node_count(sbi);
 141         si->valid_inode_count = valid_inode_count(sbi);
 142         si->inline_xattr = atomic_read(&sbi->inline_xattr);
 143         si->inline_inode = atomic_read(&sbi->inline_inode);
 144         si->inline_dir = atomic_read(&sbi->inline_dir);
 145         si->compr_inode = atomic_read(&sbi->compr_inode);
 146         si->swapfile_inode = atomic_read(&sbi->swapfile_inode);
 147         si->compr_blocks = atomic64_read(&sbi->compr_blocks);
 148         si->append = sbi->im[APPEND_INO].ino_num;
 149         si->update = sbi->im[UPDATE_INO].ino_num;
 150         si->orphans = sbi->im[ORPHAN_INO].ino_num;
 151         si->utilization = utilization(sbi);
 152
 153         si->free_segs = free_segments(sbi);
 154         si->free_secs = free_sections(sbi);
 155         si->prefree_count = prefree_segments(sbi);
 156         si->dirty_count = dirty_segments(sbi);
 157         if (sbi->node_inode)
 158                 si->node_pages = NODE_MAPPING(sbi)->nrpages;
 159         if (sbi->meta_inode)
 160                 si->meta_pages = META_MAPPING(sbi)->nrpages;
 161 #ifdef CONFIG_F2FS_FS_COMPRESSION
 162         if (sbi->compress_inode) {
 163                 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages;
 164                 si->compress_page_hit = atomic_read(&sbi->compress_page_hit);
 165         }
 166 #endif
 167         si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
 168         si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
 169         si->sits = MAIN_SEGS(sbi);
 170         si->dirty_sits = SIT_I(sbi)->dirty_sentries;
 171         si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
 172         si->avail_nids = NM_I(sbi)->available_nids;
 173         si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
 174         si->io_skip_bggc = sbi->io_skip_bggc;
 175         si->other_skip_bggc = sbi->other_skip_bggc;
 176         si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
 177                 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
 178                 / 2;
 179         si->util_valid = (int)(written_block_count(sbi) >>
 180                                                 sbi->log_blocks_per_seg)
 181                 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
 182                 / 2;
 183         si->util_invalid = 50 - si->util_free - si->util_valid;
 184         for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
 185                 struct curseg_info *curseg = CURSEG_I(sbi, i);
 186
 187                 si->curseg[i] = curseg->segno;
 188                 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
 189                 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
 190         }
 191
 192         for (i = META_CP; i < META_MAX; i++)
 193                 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
 194
 195         for (i = 0; i < NO_CHECK_TYPE; i++) {
 196                 si->dirty_seg[i] = 0;
 197                 si->full_seg[i] = 0;
 198                 si->valid_blks[i] = 0;
 199         }
 200
 201         for (i = 0; i < MAIN_SEGS(sbi); i++) {
 202                 int blks = get_seg_entry(sbi, i)->valid_blocks;
 203                 int type = get_seg_entry(sbi, i)->type;
 204
 205                 if (!blks)
 206                         continue;
 207
 208                 if (blks == sbi->blocks_per_seg)
 209                         si->full_seg[type]++;
 210                 else
 211                         si->dirty_seg[type]++;
 212                 si->valid_blks[type] += blks;
 213         }
 214
 215         for (i = 0; i < 2; i++) {
 216                 si->segment_count[i] = sbi->segment_count[i];
 217                 si->block_count[i] = sbi->block_count[i];
 218         }
 219
 220         si->inplace_count = atomic_read(&sbi->inplace_count);
 221 }
 222
 223 /*
 224  * This function calculates memory footprint.
 225  */
 226 static void update_mem_info(struct f2fs_sb_info *sbi)
 227 {
 228         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 229         int i;
 230
 231         if (si->base_mem)
 232                 goto get_cache;
 233
 234         /* build stat */
 235         si->base_mem = sizeof(struct f2fs_stat_info);
 236
 237         /* build superblock */
 238         si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
 239         si->base_mem += 2 * sizeof(struct f2fs_inode_info);
 240         si->base_mem += sizeof(*sbi->ckpt);
 241
 242         /* build sm */
 243         si->base_mem += sizeof(struct f2fs_sm_info);
 244
 245         /* build sit */
 246         si->base_mem += sizeof(struct sit_info);
 247         si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
 248         si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
 249         si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
 250         si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
 251         si->base_mem += SIT_VBLOCK_MAP_SIZE;
 252         if (__is_large_section(sbi))
 253                 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
 254         si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
 255
 256         /* build free segmap */
 257         si->base_mem += sizeof(struct free_segmap_info);
 258         si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
 259         si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
 260
 261         /* build curseg */
 262         si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
 263         si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
 264
 265         /* build dirty segmap */
 266         si->base_mem += sizeof(struct dirty_seglist_info);
 267         si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
 268         si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
 269
 270         /* build nm */
 271         si->base_mem += sizeof(struct f2fs_nm_info);
 272         si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
 273         si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
 274         si->base_mem += NM_I(sbi)->nat_blocks *
 275                                 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
 276         si->base_mem += NM_I(sbi)->nat_blocks / 8;
 277         si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
 278
 279 get_cache:
 280         si->cache_mem = 0;
 281
 282         /* build gc */
 283         if (sbi->gc_thread)
 284                 si->cache_mem += sizeof(struct f2fs_gc_kthread);
 285
 286         /* build merge flush thread */
 287         if (SM_I(sbi)->fcc_info)
 288                 si->cache_mem += sizeof(struct flush_cmd_control);
 289         if (SM_I(sbi)->dcc_info) {
 290                 si->cache_mem += sizeof(struct discard_cmd_control);
 291                 si->cache_mem += sizeof(struct discard_cmd) *
 292                         atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
 293         }
 294
 295         /* free nids */
 296         si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
 297                                 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
 298                                 sizeof(struct free_nid);
 299         si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
 300                                 sizeof(struct nat_entry);
 301         si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
 302                                 sizeof(struct nat_entry_set);
 303         for (i = 0; i < MAX_INO_ENTRY; i++)
 304                 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
 305
 306         for (i = 0; i < NR_EXTENT_CACHES; i++) {
 307                 struct extent_tree_info *eti = &sbi->extent_tree[i];
 308
 309                 si->ext_mem[i] = atomic_read(&eti->total_ext_tree) *
 310                                                 sizeof(struct extent_tree);
 311                 si->ext_mem[i] += atomic_read(&eti->total_ext_node) *
 312                                                 sizeof(struct extent_node);
 313                 si->cache_mem += si->ext_mem[i];
 314         }
 315
 316         si->page_mem = 0;
 317         if (sbi->node_inode) {
 318                 unsigned npages = NODE_MAPPING(sbi)->nrpages;
 319
 320                 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
 321         }
 322         if (sbi->meta_inode) {
 323                 unsigned npages = META_MAPPING(sbi)->nrpages;
 324
 325                 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
 326         }
 327 #ifdef CONFIG_F2FS_FS_COMPRESSION
 328         if (sbi->compress_inode) {
 329                 unsigned npages = COMPRESS_MAPPING(sbi)->nrpages;
 330                 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
 331         }
 332 #endif
 333 }
 334
 335 static char *s_flag[] = {
 336         [SBI_IS_DIRTY]          = " fs_dirty",
 337         [SBI_IS_CLOSE]          = " closing",
 338         [SBI_NEED_FSCK]         = " need_fsck",
 339         [SBI_POR_DOING]         = " recovering",
 340         [SBI_NEED_SB_WRITE]     = " sb_dirty",
 341         [SBI_NEED_CP]           = " need_cp",
 342         [SBI_IS_SHUTDOWN]       = " shutdown",
 343         [SBI_IS_RECOVERED]      = " recovered",
 344         [SBI_CP_DISABLED]       = " cp_disabled",
 345         [SBI_CP_DISABLED_QUICK] = " cp_disabled_quick",
 346         [SBI_QUOTA_NEED_FLUSH]  = " quota_need_flush",
 347         [SBI_QUOTA_SKIP_FLUSH]  = " quota_skip_flush",
 348         [SBI_QUOTA_NEED_REPAIR] = " quota_need_repair",
 349         [SBI_IS_RESIZEFS]       = " resizefs",
 350         [SBI_IS_FREEZING]       = " freezefs",
 351 };
 352
 353 static int stat_show(struct seq_file *s, void *v)
 354 {
 355         struct f2fs_stat_info *si;
 356         int i = 0, j = 0;
 357         unsigned long flags;
 358
 359         raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
 360         list_for_each_entry(si, &f2fs_stat_list, stat_list) {
 361                 update_general_status(si->sbi);
 362
 363                 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
 364                         si->sbi->sb->s_bdev, i++,
 365                         f2fs_readonly(si->sbi->sb) ? "RO" : "RW",
 366                         is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
 367                         "Disabled" : (f2fs_cp_error(si->sbi) ? "Error" : "Good"));
 368                 if (si->sbi->s_flag) {
 369                         seq_puts(s, "[SBI:");
 370                         for_each_set_bit(j, &si->sbi->s_flag, 32)
 371                                 seq_puts(s, s_flag[j]);
 372                         seq_puts(s, "]\n");
 373                 }
 374                 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
 375                            si->sit_area_segs, si->nat_area_segs);
 376                 seq_printf(s, "[SSA: %d] [MAIN: %d",
 377                            si->ssa_area_segs, si->main_area_segs);
 378                 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
 379                            si->overp_segs, si->rsvd_segs);
 380                 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",
 381                                         ktime_get_boottime_seconds(),
 382                                         SIT_I(si->sbi)->mounted_time);
 383                 if (test_opt(si->sbi, DISCARD))
 384                         seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
 385                                 si->utilization, si->valid_count, si->discard_blks);
 386                 else
 387                         seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
 388                                 si->utilization, si->valid_count);
 389
 390                 seq_printf(s, "  - Node: %u (Inode: %u, ",
 391                            si->valid_node_count, si->valid_inode_count);
 392                 seq_printf(s, "Other: %u)\n  - Data: %u\n",
 393                            si->valid_node_count - si->valid_inode_count,
 394                            si->valid_count - si->valid_node_count);
 395                 seq_printf(s, "  - Inline_xattr Inode: %u\n",
 396                            si->inline_xattr);
 397                 seq_printf(s, "  - Inline_data Inode: %u\n",
 398                            si->inline_inode);
 399                 seq_printf(s, "  - Inline_dentry Inode: %u\n",
 400                            si->inline_dir);
 401                 seq_printf(s, "  - Compressed Inode: %u, Blocks: %llu\n",
 402                            si->compr_inode, si->compr_blocks);
 403                 seq_printf(s, "  - Swapfile Inode: %u\n",
 404                            si->swapfile_inode);
 405                 seq_printf(s, "  - Orphan/Append/Update Inode: %u, %u, %u\n",
 406                            si->orphans, si->append, si->update);
 407                 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
 408                            si->main_area_segs, si->main_area_sections,
 409                            si->main_area_zones);
 410                 seq_printf(s, "    TYPE         %8s %8s %8s %10s %10s %10s\n",
 411                            "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
 412                 seq_printf(s, "  - COLD   data: %8d %8d %8d %10u %10u %10u\n",
 413                            si->curseg[CURSEG_COLD_DATA],
 414                            si->cursec[CURSEG_COLD_DATA],
 415                            si->curzone[CURSEG_COLD_DATA],
 416                            si->dirty_seg[CURSEG_COLD_DATA],
 417                            si->full_seg[CURSEG_COLD_DATA],
 418                            si->valid_blks[CURSEG_COLD_DATA]);
 419                 seq_printf(s, "  - WARM   data: %8d %8d %8d %10u %10u %10u\n",
 420                            si->curseg[CURSEG_WARM_DATA],
 421                            si->cursec[CURSEG_WARM_DATA],
 422                            si->curzone[CURSEG_WARM_DATA],
 423                            si->dirty_seg[CURSEG_WARM_DATA],
 424                            si->full_seg[CURSEG_WARM_DATA],
 425                            si->valid_blks[CURSEG_WARM_DATA]);
 426                 seq_printf(s, "  - HOT    data: %8d %8d %8d %10u %10u %10u\n",
 427                            si->curseg[CURSEG_HOT_DATA],
 428                            si->cursec[CURSEG_HOT_DATA],
 429                            si->curzone[CURSEG_HOT_DATA],
 430                            si->dirty_seg[CURSEG_HOT_DATA],
 431                            si->full_seg[CURSEG_HOT_DATA],
 432                            si->valid_blks[CURSEG_HOT_DATA]);
 433                 seq_printf(s, "  - Dir   dnode: %8d %8d %8d %10u %10u %10u\n",
 434                            si->curseg[CURSEG_HOT_NODE],
 435                            si->cursec[CURSEG_HOT_NODE],
 436                            si->curzone[CURSEG_HOT_NODE],
 437                            si->dirty_seg[CURSEG_HOT_NODE],
 438                            si->full_seg[CURSEG_HOT_NODE],
 439                            si->valid_blks[CURSEG_HOT_NODE]);
 440                 seq_printf(s, "  - File  dnode: %8d %8d %8d %10u %10u %10u\n",
 441                            si->curseg[CURSEG_WARM_NODE],
 442                            si->cursec[CURSEG_WARM_NODE],
 443                            si->curzone[CURSEG_WARM_NODE],
 444                            si->dirty_seg[CURSEG_WARM_NODE],
 445                            si->full_seg[CURSEG_WARM_NODE],
 446                            si->valid_blks[CURSEG_WARM_NODE]);
 447                 seq_printf(s, "  - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
 448                            si->curseg[CURSEG_COLD_NODE],
 449                            si->cursec[CURSEG_COLD_NODE],
 450                            si->curzone[CURSEG_COLD_NODE],
 451                            si->dirty_seg[CURSEG_COLD_NODE],
 452                            si->full_seg[CURSEG_COLD_NODE],
 453                            si->valid_blks[CURSEG_COLD_NODE]);
 454                 seq_printf(s, "  - Pinned file: %8d %8d %8d\n",
 455                            si->curseg[CURSEG_COLD_DATA_PINNED],
 456                            si->cursec[CURSEG_COLD_DATA_PINNED],
 457                            si->curzone[CURSEG_COLD_DATA_PINNED]);
 458                 seq_printf(s, "  - ATGC   data: %8d %8d %8d\n",
 459                            si->curseg[CURSEG_ALL_DATA_ATGC],
 460                            si->cursec[CURSEG_ALL_DATA_ATGC],
 461                            si->curzone[CURSEG_ALL_DATA_ATGC]);
 462                 seq_printf(s, "\n  - Valid: %d\n  - Dirty: %d\n",
 463                            si->main_area_segs - si->dirty_count -
 464                            si->prefree_count - si->free_segs,
 465                            si->dirty_count);
 466                 seq_printf(s, "  - Prefree: %d\n  - Free: %d (%d)\n\n",
 467                            si->prefree_count, si->free_segs, si->free_secs);
 468                 seq_printf(s, "CP calls: %d (BG: %d)\n",
 469                                 si->cp_count, si->bg_cp_count);
 470                 seq_printf(s, "  - cp blocks : %u\n", si->meta_count[META_CP]);
 471                 seq_printf(s, "  - sit blocks : %u\n",
 472                                 si->meta_count[META_SIT]);
 473                 seq_printf(s, "  - nat blocks : %u\n",
 474                                 si->meta_count[META_NAT]);
 475                 seq_printf(s, "  - ssa blocks : %u\n",
 476                                 si->meta_count[META_SSA]);
 477                 seq_printf(s, "CP merge (Queued: %4d, Issued: %4d, Total: %4d, "
 478                                 "Cur time: %4d(ms), Peak time: %4d(ms))\n",
 479                                 si->nr_queued_ckpt, si->nr_issued_ckpt,
 480                                 si->nr_total_ckpt, si->cur_ckpt_time,
 481                                 si->peak_ckpt_time);
 482                 seq_printf(s, "GC calls: %d (BG: %d)\n",
 483                            si->call_count, si->bg_gc);
 484                 seq_printf(s, "  - data segments : %d (%d)\n",
 485                                 si->data_segs, si->bg_data_segs);
 486                 seq_printf(s, "  - node segments : %d (%d)\n",
 487                                 si->node_segs, si->bg_node_segs);
 488                 seq_printf(s, "  - Reclaimed segs : Normal (%d), Idle CB (%d), "
 489                                 "Idle Greedy (%d), Idle AT (%d), "
 490                                 "Urgent High (%d), Urgent Mid (%d), "
 491                                 "Urgent Low (%d)\n",
 492                                 si->sbi->gc_reclaimed_segs[GC_NORMAL],
 493                                 si->sbi->gc_reclaimed_segs[GC_IDLE_CB],
 494                                 si->sbi->gc_reclaimed_segs[GC_IDLE_GREEDY],
 495                                 si->sbi->gc_reclaimed_segs[GC_IDLE_AT],
 496                                 si->sbi->gc_reclaimed_segs[GC_URGENT_HIGH],
 497                                 si->sbi->gc_reclaimed_segs[GC_URGENT_MID],
 498                                 si->sbi->gc_reclaimed_segs[GC_URGENT_LOW]);
 499                 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
 500                                 si->bg_data_blks + si->bg_node_blks);
 501                 seq_printf(s, "  - data blocks : %d (%d)\n", si->data_blks,
 502                                 si->bg_data_blks);
 503                 seq_printf(s, "  - node blocks : %d (%d)\n", si->node_blks,
 504                                 si->bg_node_blks);
 505                 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
 506                                 si->io_skip_bggc, si->other_skip_bggc);
 507                 seq_puts(s, "\nExtent Cache (Read):\n");
 508                 seq_printf(s, "  - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
 509                                 si->hit_largest, si->hit_cached[EX_READ],
 510                                 si->hit_rbtree[EX_READ]);
 511                 seq_printf(s, "  - Hit Ratio: %llu%% (%llu / %llu)\n",
 512                                 !si->total_ext[EX_READ] ? 0 :
 513                                 div64_u64(si->hit_total[EX_READ] * 100,
 514                                 si->total_ext[EX_READ]),
 515                                 si->hit_total[EX_READ], si->total_ext[EX_READ]);
 516                 seq_printf(s, "  - Inner Struct Count: tree: %d(%d), node: %d\n",
 517                                 si->ext_tree[EX_READ], si->zombie_tree[EX_READ],
 518                                 si->ext_node[EX_READ]);
 519                 seq_puts(s, "\nBalancing F2FS Async:\n");
 520                 seq_printf(s, "  - DIO (R: %4d, W: %4d)\n",
 521                            si->nr_dio_read, si->nr_dio_write);
 522                 seq_printf(s, "  - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
 523                            si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
 524                 seq_printf(s, "  - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
 525                         "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
 526                            si->nr_wb_cp_data, si->nr_wb_data,
 527                            si->nr_flushing, si->nr_flushed,
 528                            si->flush_list_empty,
 529                            si->nr_discarding, si->nr_discarded,
 530                            si->nr_discard_cmd, si->undiscard_blks);
 531                 seq_printf(s, "  - atomic IO: %4d (Max. %4d)\n",
 532                            si->aw_cnt, si->max_aw_cnt);
 533                 seq_printf(s, "  - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit);
 534                 seq_printf(s, "  - nodes: %4d in %4d\n",
 535                            si->ndirty_node, si->node_pages);
 536                 seq_printf(s, "  - dents: %4d in dirs:%4d (%4d)\n",
 537                            si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
 538                 seq_printf(s, "  - datas: %4d in files:%4d\n",
 539                            si->ndirty_data, si->ndirty_files);
 540                 seq_printf(s, "  - quota datas: %4d in quota files:%4d\n",
 541                            si->ndirty_qdata, si->nquota_files);
 542                 seq_printf(s, "  - meta: %4d in %4d\n",
 543                            si->ndirty_meta, si->meta_pages);
 544                 seq_printf(s, "  - imeta: %4d\n",
 545                            si->ndirty_imeta);
 546                 seq_printf(s, "  - fsync mark: %4lld\n",
 547                            percpu_counter_sum_positive(
 548                                         &si->sbi->rf_node_block_count));
 549                 seq_printf(s, "  - NATs: %9d/%9d\n  - SITs: %9d/%9d\n",
 550                            si->dirty_nats, si->nats, si->dirty_sits, si->sits);
 551                 seq_printf(s, "  - free_nids: %9d/%9d\n  - alloc_nids: %9d\n",
 552                            si->free_nids, si->avail_nids, si->alloc_nids);
 553                 seq_puts(s, "\nDistribution of User Blocks:");
 554                 seq_puts(s, " [ valid | invalid | free ]\n");
 555                 seq_puts(s, "  [");
 556
 557                 for (j = 0; j < si->util_valid; j++)
 558                         seq_putc(s, '-');
 559                 seq_putc(s, '|');
 560
 561                 for (j = 0; j < si->util_invalid; j++)
 562                         seq_putc(s, '-');
 563                 seq_putc(s, '|');
 564
 565                 for (j = 0; j < si->util_free; j++)
 566                         seq_putc(s, '-');
 567                 seq_puts(s, "]\n\n");
 568                 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
 569                 seq_printf(s, "SSR: %u blocks in %u segments\n",
 570                            si->block_count[SSR], si->segment_count[SSR]);
 571                 seq_printf(s, "LFS: %u blocks in %u segments\n",
 572                            si->block_count[LFS], si->segment_count[LFS]);
 573
 574                 /* segment usage info */
 575                 f2fs_update_sit_info(si->sbi);
 576                 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
 577                            si->bimodal, si->avg_vblocks);
 578
 579                 /* memory footprint */
 580                 update_mem_info(si->sbi);
 581                 seq_printf(s, "\nMemory: %llu KB\n",
 582                         (si->base_mem + si->cache_mem + si->page_mem) >> 10);
 583                 seq_printf(s, "  - static: %llu KB\n",
 584                                 si->base_mem >> 10);
 585                 seq_printf(s, "  - cached all: %llu KB\n",
 586                                 si->cache_mem >> 10);
 587                 seq_printf(s, "  - read extent cache: %llu KB\n",
 588                                 si->ext_mem[EX_READ] >> 10);
 589                 seq_printf(s, "  - paged : %llu KB\n",
 590                                 si->page_mem >> 10);
 591         }
 592         raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
 593         return 0;
 594 }
 595
 596 DEFINE_SHOW_ATTRIBUTE(stat);
 597 #endif
 598
 599 int f2fs_build_stats(struct f2fs_sb_info *sbi)
 600 {
 601         struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
 602         struct f2fs_stat_info *si;
 603         unsigned long flags;
 604         int i;
 605
 606         si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
 607         if (!si)
 608                 return -ENOMEM;
 609
 610         si->all_area_segs = le32_to_cpu(raw_super->segment_count);
 611         si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
 612         si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
 613         si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
 614         si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
 615         si->main_area_sections = le32_to_cpu(raw_super->section_count);
 616         si->main_area_zones = si->main_area_sections /
 617                                 le32_to_cpu(raw_super->secs_per_zone);
 618         si->sbi = sbi;
 619         sbi->stat_info = si;
 620
 621         /* general extent cache stats */
 622         for (i = 0; i < NR_EXTENT_CACHES; i++) {
 623                 atomic64_set(&sbi->total_hit_ext[i], 0);
 624                 atomic64_set(&sbi->read_hit_rbtree[i], 0);
 625                 atomic64_set(&sbi->read_hit_cached[i], 0);
 626         }
 627
 628         /* read extent_cache only */
 629         atomic64_set(&sbi->read_hit_largest, 0);
 630
 631         atomic_set(&sbi->inline_xattr, 0);
 632         atomic_set(&sbi->inline_inode, 0);
 633         atomic_set(&sbi->inline_dir, 0);
 634         atomic_set(&sbi->compr_inode, 0);
 635         atomic64_set(&sbi->compr_blocks, 0);
 636         atomic_set(&sbi->swapfile_inode, 0);
 637         atomic_set(&sbi->atomic_files, 0);
 638         atomic_set(&sbi->inplace_count, 0);
 639         for (i = META_CP; i < META_MAX; i++)
 640                 atomic_set(&sbi->meta_count[i], 0);
 641
 642         atomic_set(&sbi->max_aw_cnt, 0);
 643
 644         raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
 645         list_add_tail(&si->stat_list, &f2fs_stat_list);
 646         raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
 647
 648         return 0;
 649 }
 650
 651 void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
 652 {
 653         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 654         unsigned long flags;
 655
 656         raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
 657         list_del(&si->stat_list);
 658         raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
 659
 660         kfree(si);
 661 }
 662
 663 void __init f2fs_create_root_stats(void)
 664 {
 665 #ifdef CONFIG_DEBUG_FS
 666         f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
 667
 668         debugfs_create_file("status", 0444, f2fs_debugfs_root, NULL,
 669                             &stat_fops);
 670 #endif
 671 }
 672
 673 void f2fs_destroy_root_stats(void)
 674 {
 675 #ifdef CONFIG_DEBUG_FS
 676         debugfs_remove_recursive(f2fs_debugfs_root);
 677         f2fs_debugfs_root = NULL;
 678 #endif
 679 }