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 <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         /* block age extent_cache only */
  92         si->allocated_data_blocks = atomic64_read(&sbi->allocated_data_blocks);
  93
  94         /* validation check of the segment numbers */
  95         si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
  96         si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
  97         si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
  98         si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
  99         si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
 100         si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
 101         si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
 102         si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
 103         si->nquota_files = sbi->nquota_files;
 104         si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
 105         si->aw_cnt = atomic_read(&sbi->atomic_files);
 106         si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
 107         si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
 108         si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
 109         si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
 110         si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
 111         si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
 112         si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
 113         si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
 114         if (SM_I(sbi)->fcc_info) {
 115                 si->nr_flushed =
 116                         atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
 117                 si->nr_flushing =
 118                         atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
 119                 si->flush_list_empty =
 120                         llist_empty(&SM_I(sbi)->fcc_info->issue_list);
 121         }
 122         if (SM_I(sbi)->dcc_info) {
 123                 si->nr_discarded =
 124                         atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
 125                 si->nr_discarding =
 126                         atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
 127                 si->nr_discard_cmd =
 128                         atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
 129                 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
 130         }
 131         si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt);
 132         si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt);
 133         si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt);
 134         spin_lock(&sbi->cprc_info.stat_lock);
 135         si->cur_ckpt_time = sbi->cprc_info.cur_time;
 136         si->peak_ckpt_time = sbi->cprc_info.peak_time;
 137         spin_unlock(&sbi->cprc_info.stat_lock);
 138         si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
 139         si->rsvd_segs = reserved_segments(sbi);
 140         si->overp_segs = overprovision_segments(sbi);
 141         si->valid_count = valid_user_blocks(sbi);
 142         si->discard_blks = discard_blocks(sbi);
 143         si->valid_node_count = valid_node_count(sbi);
 144         si->valid_inode_count = valid_inode_count(sbi);
 145         si->inline_xattr = atomic_read(&sbi->inline_xattr);
 146         si->inline_inode = atomic_read(&sbi->inline_inode);
 147         si->inline_dir = atomic_read(&sbi->inline_dir);
 148         si->compr_inode = atomic_read(&sbi->compr_inode);
 149         si->swapfile_inode = atomic_read(&sbi->swapfile_inode);
 150         si->compr_blocks = atomic64_read(&sbi->compr_blocks);
 151         si->append = sbi->im[APPEND_INO].ino_num;
 152         si->update = sbi->im[UPDATE_INO].ino_num;
 153         si->orphans = sbi->im[ORPHAN_INO].ino_num;
 154         si->utilization = utilization(sbi);
 155
 156         si->free_segs = free_segments(sbi);
 157         si->free_secs = free_sections(sbi);
 158         si->prefree_count = prefree_segments(sbi);
 159         si->dirty_count = dirty_segments(sbi);
 160         if (sbi->node_inode)
 161                 si->node_pages = NODE_MAPPING(sbi)->nrpages;
 162         if (sbi->meta_inode)
 163                 si->meta_pages = META_MAPPING(sbi)->nrpages;
 164 #ifdef CONFIG_F2FS_FS_COMPRESSION
 165         if (sbi->compress_inode) {
 166                 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages;
 167                 si->compress_page_hit = atomic_read(&sbi->compress_page_hit);
 168         }
 169 #endif
 170         si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
 171         si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
 172         si->sits = MAIN_SEGS(sbi);
 173         si->dirty_sits = SIT_I(sbi)->dirty_sentries;
 174         si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
 175         si->avail_nids = NM_I(sbi)->available_nids;
 176         si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
 177         si->io_skip_bggc = sbi->io_skip_bggc;
 178         si->other_skip_bggc = sbi->other_skip_bggc;
 179         si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
 180                 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
 181                 / 2;
 182         si->util_valid = (int)(written_block_count(sbi) >>
 183                                                 sbi->log_blocks_per_seg)
 184                 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
 185                 / 2;
 186         si->util_invalid = 50 - si->util_free - si->util_valid;
 187         for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
 188                 struct curseg_info *curseg = CURSEG_I(sbi, i);
 189
 190                 si->curseg[i] = curseg->segno;
 191                 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
 192                 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
 193         }
 194
 195         for (i = META_CP; i < META_MAX; i++)
 196                 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
 197
 198         for (i = 0; i < NO_CHECK_TYPE; i++) {
 199                 si->dirty_seg[i] = 0;
 200                 si->full_seg[i] = 0;
 201                 si->valid_blks[i] = 0;
 202         }
 203
 204         for (i = 0; i < MAIN_SEGS(sbi); i++) {
 205                 int blks = get_seg_entry(sbi, i)->valid_blocks;
 206                 int type = get_seg_entry(sbi, i)->type;
 207
 208                 if (!blks)
 209                         continue;
 210
 211                 if (blks == sbi->blocks_per_seg)
 212                         si->full_seg[type]++;
 213                 else
 214                         si->dirty_seg[type]++;
 215                 si->valid_blks[type] += blks;
 216         }
 217
 218         for (i = 0; i < MAX_CALL_TYPE; i++)
 219                 si->cp_call_count[i] = atomic_read(&sbi->cp_call_count[i]);
 220
 221         for (i = 0; i < 2; i++) {
 222                 si->segment_count[i] = sbi->segment_count[i];
 223                 si->block_count[i] = sbi->block_count[i];
 224         }
 225
 226         si->inplace_count = atomic_read(&sbi->inplace_count);
 227 }
 228
 229 /*
 230  * This function calculates memory footprint.
 231  */
 232 static void update_mem_info(struct f2fs_sb_info *sbi)
 233 {
 234         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 235         int i;
 236
 237         if (si->base_mem)
 238                 goto get_cache;
 239
 240         /* build stat */
 241         si->base_mem = sizeof(struct f2fs_stat_info);
 242
 243         /* build superblock */
 244         si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
 245         si->base_mem += 2 * sizeof(struct f2fs_inode_info);
 246         si->base_mem += sizeof(*sbi->ckpt);
 247
 248         /* build sm */
 249         si->base_mem += sizeof(struct f2fs_sm_info);
 250
 251         /* build sit */
 252         si->base_mem += sizeof(struct sit_info);
 253         si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
 254         si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
 255         si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
 256         si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
 257         si->base_mem += SIT_VBLOCK_MAP_SIZE;
 258         if (__is_large_section(sbi))
 259                 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
 260         si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
 261
 262         /* build free segmap */
 263         si->base_mem += sizeof(struct free_segmap_info);
 264         si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
 265         si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
 266
 267         /* build curseg */
 268         si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
 269         si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
 270
 271         /* build dirty segmap */
 272         si->base_mem += sizeof(struct dirty_seglist_info);
 273         si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
 274         si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
 275
 276         /* build nm */
 277         si->base_mem += sizeof(struct f2fs_nm_info);
 278         si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
 279         si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
 280         si->base_mem += NM_I(sbi)->nat_blocks *
 281                                 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
 282         si->base_mem += NM_I(sbi)->nat_blocks / 8;
 283         si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
 284
 285 get_cache:
 286         si->cache_mem = 0;
 287
 288         /* build gc */
 289         if (sbi->gc_thread)
 290                 si->cache_mem += sizeof(struct f2fs_gc_kthread);
 291
 292         /* build merge flush thread */
 293         if (SM_I(sbi)->fcc_info)
 294                 si->cache_mem += sizeof(struct flush_cmd_control);
 295         if (SM_I(sbi)->dcc_info) {
 296                 si->cache_mem += sizeof(struct discard_cmd_control);
 297                 si->cache_mem += sizeof(struct discard_cmd) *
 298                         atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
 299         }
 300
 301         /* free nids */
 302         si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
 303                                 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
 304                                 sizeof(struct free_nid);
 305         si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
 306                                 sizeof(struct nat_entry);
 307         si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
 308                                 sizeof(struct nat_entry_set);
 309         for (i = 0; i < MAX_INO_ENTRY; i++)
 310                 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
 311
 312         for (i = 0; i < NR_EXTENT_CACHES; i++) {
 313                 struct extent_tree_info *eti = &sbi->extent_tree[i];
 314
 315                 si->ext_mem[i] = atomic_read(&eti->total_ext_tree) *
 316                                                 sizeof(struct extent_tree);
 317                 si->ext_mem[i] += atomic_read(&eti->total_ext_node) *
 318                                                 sizeof(struct extent_node);
 319                 si->cache_mem += si->ext_mem[i];
 320         }
 321
 322         si->page_mem = 0;
 323         if (sbi->node_inode) {
 324                 unsigned long npages = NODE_MAPPING(sbi)->nrpages;
 325
 326                 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
 327         }
 328         if (sbi->meta_inode) {
 329                 unsigned long npages = META_MAPPING(sbi)->nrpages;
 330
 331                 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
 332         }
 333 #ifdef CONFIG_F2FS_FS_COMPRESSION
 334         if (sbi->compress_inode) {
 335                 unsigned long npages = COMPRESS_MAPPING(sbi)->nrpages;
 336
 337                 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
 338         }
 339 #endif
 340 }
 341
 342 static const char *s_flag[MAX_SBI_FLAG] = {
 343         [SBI_IS_DIRTY]          = "fs_dirty",
 344         [SBI_IS_CLOSE]          = "closing",
 345         [SBI_NEED_FSCK]         = "need_fsck",
 346         [SBI_POR_DOING]         = "recovering",
 347         [SBI_NEED_SB_WRITE]     = "sb_dirty",
 348         [SBI_NEED_CP]           = "need_cp",
 349         [SBI_IS_SHUTDOWN]       = "shutdown",
 350         [SBI_IS_RECOVERED]      = "recovered",
 351         [SBI_CP_DISABLED]       = "cp_disabled",
 352         [SBI_CP_DISABLED_QUICK] = "cp_disabled_quick",
 353         [SBI_QUOTA_NEED_FLUSH]  = "quota_need_flush",
 354         [SBI_QUOTA_SKIP_FLUSH]  = "quota_skip_flush",
 355         [SBI_QUOTA_NEED_REPAIR] = "quota_need_repair",
 356         [SBI_IS_RESIZEFS]       = "resizefs",
 357         [SBI_IS_FREEZING]       = "freezefs",
 358         [SBI_IS_WRITABLE]       = "writable",
 359 };
 360
 361 static const char *ipu_mode_names[F2FS_IPU_MAX] = {
 362         [F2FS_IPU_FORCE]        = "FORCE",
 363         [F2FS_IPU_SSR]          = "SSR",
 364         [F2FS_IPU_UTIL]         = "UTIL",
 365         [F2FS_IPU_SSR_UTIL]     = "SSR_UTIL",
 366         [F2FS_IPU_FSYNC]        = "FSYNC",
 367         [F2FS_IPU_ASYNC]        = "ASYNC",
 368         [F2FS_IPU_NOCACHE]      = "NOCACHE",
 369         [F2FS_IPU_HONOR_OPU_WRITE]      = "HONOR_OPU_WRITE",
 370 };
 371
 372 static int stat_show(struct seq_file *s, void *v)
 373 {
 374         struct f2fs_stat_info *si;
 375         int i = 0, j = 0;
 376         unsigned long flags;
 377
 378         raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
 379         list_for_each_entry(si, &f2fs_stat_list, stat_list) {
 380                 struct f2fs_sb_info *sbi = si->sbi;
 381
 382                 update_general_status(sbi);
 383
 384                 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
 385                         sbi->sb->s_bdev, i++,
 386                         f2fs_readonly(sbi->sb) ? "RO" : "RW",
 387                         is_set_ckpt_flags(sbi, CP_DISABLED_FLAG) ?
 388                         "Disabled" : (f2fs_cp_error(sbi) ? "Error" : "Good"));
 389                 if (sbi->s_flag) {
 390                         seq_puts(s, "[SBI:");
 391                         for_each_set_bit(j, &sbi->s_flag, MAX_SBI_FLAG)
 392                                 seq_printf(s, " %s", s_flag[j]);
 393                         seq_puts(s, "]\n");
 394                 }
 395                 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
 396                            si->sit_area_segs, si->nat_area_segs);
 397                 seq_printf(s, "[SSA: %d] [MAIN: %d",
 398                            si->ssa_area_segs, si->main_area_segs);
 399                 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
 400                            si->overp_segs, si->rsvd_segs);
 401                 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",
 402                                         ktime_get_boottime_seconds(),
 403                                         SIT_I(sbi)->mounted_time);
 404
 405                 seq_puts(s, "Policy:\n");
 406                 seq_puts(s, "  - IPU: [");
 407                 if (IS_F2FS_IPU_DISABLE(sbi)) {
 408                         seq_puts(s, " DISABLE");
 409                 } else {
 410                         unsigned long policy = SM_I(sbi)->ipu_policy;
 411
 412                         for_each_set_bit(j, &policy, F2FS_IPU_MAX)
 413                                 seq_printf(s, " %s", ipu_mode_names[j]);
 414                 }
 415                 seq_puts(s, " ]\n\n");
 416
 417                 if (test_opt(sbi, DISCARD))
 418                         seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
 419                                 si->utilization, si->valid_count, si->discard_blks);
 420                 else
 421                         seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
 422                                 si->utilization, si->valid_count);
 423
 424                 seq_printf(s, "  - Node: %u (Inode: %u, ",
 425                            si->valid_node_count, si->valid_inode_count);
 426                 seq_printf(s, "Other: %u)\n  - Data: %u\n",
 427                            si->valid_node_count - si->valid_inode_count,
 428                            si->valid_count - si->valid_node_count);
 429                 seq_printf(s, "  - Inline_xattr Inode: %u\n",
 430                            si->inline_xattr);
 431                 seq_printf(s, "  - Inline_data Inode: %u\n",
 432                            si->inline_inode);
 433                 seq_printf(s, "  - Inline_dentry Inode: %u\n",
 434                            si->inline_dir);
 435                 seq_printf(s, "  - Compressed Inode: %u, Blocks: %llu\n",
 436                            si->compr_inode, si->compr_blocks);
 437                 seq_printf(s, "  - Swapfile Inode: %u\n",
 438                            si->swapfile_inode);
 439                 seq_printf(s, "  - Orphan/Append/Update Inode: %u, %u, %u\n",
 440                            si->orphans, si->append, si->update);
 441                 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
 442                            si->main_area_segs, si->main_area_sections,
 443                            si->main_area_zones);
 444                 seq_printf(s, "    TYPE         %8s %8s %8s %10s %10s %10s\n",
 445                            "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
 446                 seq_printf(s, "  - COLD   data: %8d %8d %8d %10u %10u %10u\n",
 447                            si->curseg[CURSEG_COLD_DATA],
 448                            si->cursec[CURSEG_COLD_DATA],
 449                            si->curzone[CURSEG_COLD_DATA],
 450                            si->dirty_seg[CURSEG_COLD_DATA],
 451                            si->full_seg[CURSEG_COLD_DATA],
 452                            si->valid_blks[CURSEG_COLD_DATA]);
 453                 seq_printf(s, "  - WARM   data: %8d %8d %8d %10u %10u %10u\n",
 454                            si->curseg[CURSEG_WARM_DATA],
 455                            si->cursec[CURSEG_WARM_DATA],
 456                            si->curzone[CURSEG_WARM_DATA],
 457                            si->dirty_seg[CURSEG_WARM_DATA],
 458                            si->full_seg[CURSEG_WARM_DATA],
 459                            si->valid_blks[CURSEG_WARM_DATA]);
 460                 seq_printf(s, "  - HOT    data: %8d %8d %8d %10u %10u %10u\n",
 461                            si->curseg[CURSEG_HOT_DATA],
 462                            si->cursec[CURSEG_HOT_DATA],
 463                            si->curzone[CURSEG_HOT_DATA],
 464                            si->dirty_seg[CURSEG_HOT_DATA],
 465                            si->full_seg[CURSEG_HOT_DATA],
 466                            si->valid_blks[CURSEG_HOT_DATA]);
 467                 seq_printf(s, "  - Dir   dnode: %8d %8d %8d %10u %10u %10u\n",
 468                            si->curseg[CURSEG_HOT_NODE],
 469                            si->cursec[CURSEG_HOT_NODE],
 470                            si->curzone[CURSEG_HOT_NODE],
 471                            si->dirty_seg[CURSEG_HOT_NODE],
 472                            si->full_seg[CURSEG_HOT_NODE],
 473                            si->valid_blks[CURSEG_HOT_NODE]);
 474                 seq_printf(s, "  - File  dnode: %8d %8d %8d %10u %10u %10u\n",
 475                            si->curseg[CURSEG_WARM_NODE],
 476                            si->cursec[CURSEG_WARM_NODE],
 477                            si->curzone[CURSEG_WARM_NODE],
 478                            si->dirty_seg[CURSEG_WARM_NODE],
 479                            si->full_seg[CURSEG_WARM_NODE],
 480                            si->valid_blks[CURSEG_WARM_NODE]);
 481                 seq_printf(s, "  - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
 482                            si->curseg[CURSEG_COLD_NODE],
 483                            si->cursec[CURSEG_COLD_NODE],
 484                            si->curzone[CURSEG_COLD_NODE],
 485                            si->dirty_seg[CURSEG_COLD_NODE],
 486                            si->full_seg[CURSEG_COLD_NODE],
 487                            si->valid_blks[CURSEG_COLD_NODE]);
 488                 seq_printf(s, "  - Pinned file: %8d %8d %8d\n",
 489                            si->curseg[CURSEG_COLD_DATA_PINNED],
 490                            si->cursec[CURSEG_COLD_DATA_PINNED],
 491                            si->curzone[CURSEG_COLD_DATA_PINNED]);
 492                 seq_printf(s, "  - ATGC   data: %8d %8d %8d\n",
 493                            si->curseg[CURSEG_ALL_DATA_ATGC],
 494                            si->cursec[CURSEG_ALL_DATA_ATGC],
 495                            si->curzone[CURSEG_ALL_DATA_ATGC]);
 496                 seq_printf(s, "\n  - Valid: %d\n  - Dirty: %d\n",
 497                            si->main_area_segs - si->dirty_count -
 498                            si->prefree_count - si->free_segs,
 499                            si->dirty_count);
 500                 seq_printf(s, "  - Prefree: %d\n  - Free: %d (%d)\n\n",
 501                            si->prefree_count, si->free_segs, si->free_secs);
 502                 seq_printf(s, "CP calls: %d (BG: %d)\n",
 503                            si->cp_call_count[TOTAL_CALL],
 504                            si->cp_call_count[BACKGROUND]);
 505                 seq_printf(s, "CP count: %d\n", si->cp_count);
 506                 seq_printf(s, "  - cp blocks : %u\n", si->meta_count[META_CP]);
 507                 seq_printf(s, "  - sit blocks : %u\n",
 508                                 si->meta_count[META_SIT]);
 509                 seq_printf(s, "  - nat blocks : %u\n",
 510                                 si->meta_count[META_NAT]);
 511                 seq_printf(s, "  - ssa blocks : %u\n",
 512                                 si->meta_count[META_SSA]);
 513                 seq_puts(s, "CP merge:\n");
 514                 seq_printf(s, "  - Queued : %4d\n", si->nr_queued_ckpt);
 515                 seq_printf(s, "  - Issued : %4d\n", si->nr_issued_ckpt);
 516                 seq_printf(s, "  - Total : %4d\n", si->nr_total_ckpt);
 517                 seq_printf(s, "  - Cur time : %4d(ms)\n", si->cur_ckpt_time);
 518                 seq_printf(s, "  - Peak time : %4d(ms)\n", si->peak_ckpt_time);
 519                 seq_printf(s, "GC calls: %d (gc_thread: %d)\n",
 520                            si->gc_call_count[BACKGROUND] +
 521                            si->gc_call_count[FOREGROUND],
 522                            si->gc_call_count[BACKGROUND]);
 523                 if (__is_large_section(sbi)) {
 524                         seq_printf(s, "  - data sections : %d (BG: %d)\n",
 525                                         si->gc_secs[DATA][BG_GC] + si->gc_secs[DATA][FG_GC],
 526                                         si->gc_secs[DATA][BG_GC]);
 527                         seq_printf(s, "  - node sections : %d (BG: %d)\n",
 528                                         si->gc_secs[NODE][BG_GC] + si->gc_secs[NODE][FG_GC],
 529                                         si->gc_secs[NODE][BG_GC]);
 530                 }
 531                 seq_printf(s, "  - data segments : %d (BG: %d)\n",
 532                                 si->gc_segs[DATA][BG_GC] + si->gc_segs[DATA][FG_GC],
 533                                 si->gc_segs[DATA][BG_GC]);
 534                 seq_printf(s, "  - node segments : %d (BG: %d)\n",
 535                                 si->gc_segs[NODE][BG_GC] + si->gc_segs[NODE][FG_GC],
 536                                 si->gc_segs[NODE][BG_GC]);
 537                 seq_puts(s, "  - Reclaimed segs :\n");
 538                 seq_printf(s, "    - Normal : %d\n", sbi->gc_reclaimed_segs[GC_NORMAL]);
 539                 seq_printf(s, "    - Idle CB : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_CB]);
 540                 seq_printf(s, "    - Idle Greedy : %d\n",
 541                                 sbi->gc_reclaimed_segs[GC_IDLE_GREEDY]);
 542                 seq_printf(s, "    - Idle AT : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_AT]);
 543                 seq_printf(s, "    - Urgent High : %d\n",
 544                                 sbi->gc_reclaimed_segs[GC_URGENT_HIGH]);
 545                 seq_printf(s, "    - Urgent Mid : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_MID]);
 546                 seq_printf(s, "    - Urgent Low : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_LOW]);
 547                 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
 548                                 si->bg_data_blks + si->bg_node_blks);
 549                 seq_printf(s, "  - data blocks : %d (%d)\n", si->data_blks,
 550                                 si->bg_data_blks);
 551                 seq_printf(s, "  - node blocks : %d (%d)\n", si->node_blks,
 552                                 si->bg_node_blks);
 553                 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
 554                                 si->io_skip_bggc, si->other_skip_bggc);
 555                 seq_puts(s, "\nExtent Cache (Read):\n");
 556                 seq_printf(s, "  - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
 557                                 si->hit_largest, si->hit_cached[EX_READ],
 558                                 si->hit_rbtree[EX_READ]);
 559                 seq_printf(s, "  - Hit Ratio: %llu%% (%llu / %llu)\n",
 560                                 !si->total_ext[EX_READ] ? 0 :
 561                                 div64_u64(si->hit_total[EX_READ] * 100,
 562                                 si->total_ext[EX_READ]),
 563                                 si->hit_total[EX_READ], si->total_ext[EX_READ]);
 564                 seq_printf(s, "  - Inner Struct Count: tree: %d(%d), node: %d\n",
 565                                 si->ext_tree[EX_READ], si->zombie_tree[EX_READ],
 566                                 si->ext_node[EX_READ]);
 567                 seq_puts(s, "\nExtent Cache (Block Age):\n");
 568                 seq_printf(s, "  - Allocated Data Blocks: %llu\n",
 569                                 si->allocated_data_blocks);
 570                 seq_printf(s, "  - Hit Count: L1:%llu L2:%llu\n",
 571                                 si->hit_cached[EX_BLOCK_AGE],
 572                                 si->hit_rbtree[EX_BLOCK_AGE]);
 573                 seq_printf(s, "  - Hit Ratio: %llu%% (%llu / %llu)\n",
 574                                 !si->total_ext[EX_BLOCK_AGE] ? 0 :
 575                                 div64_u64(si->hit_total[EX_BLOCK_AGE] * 100,
 576                                 si->total_ext[EX_BLOCK_AGE]),
 577                                 si->hit_total[EX_BLOCK_AGE],
 578                                 si->total_ext[EX_BLOCK_AGE]);
 579                 seq_printf(s, "  - Inner Struct Count: tree: %d(%d), node: %d\n",
 580                                 si->ext_tree[EX_BLOCK_AGE],
 581                                 si->zombie_tree[EX_BLOCK_AGE],
 582                                 si->ext_node[EX_BLOCK_AGE]);
 583                 seq_puts(s, "\nBalancing F2FS Async:\n");
 584                 seq_printf(s, "  - DIO (R: %4d, W: %4d)\n",
 585                            si->nr_dio_read, si->nr_dio_write);
 586                 seq_printf(s, "  - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
 587                            si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
 588                 seq_printf(s, "  - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), ",
 589                            si->nr_wb_cp_data, si->nr_wb_data,
 590                            si->nr_flushing, si->nr_flushed,
 591                            si->flush_list_empty);
 592                 seq_printf(s, "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
 593                            si->nr_discarding, si->nr_discarded,
 594                            si->nr_discard_cmd, si->undiscard_blks);
 595                 seq_printf(s, "  - atomic IO: %4d (Max. %4d)\n",
 596                            si->aw_cnt, si->max_aw_cnt);
 597                 seq_printf(s, "  - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit);
 598                 seq_printf(s, "  - nodes: %4d in %4d\n",
 599                            si->ndirty_node, si->node_pages);
 600                 seq_printf(s, "  - dents: %4d in dirs:%4d (%4d)\n",
 601                            si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
 602                 seq_printf(s, "  - datas: %4d in files:%4d\n",
 603                            si->ndirty_data, si->ndirty_files);
 604                 seq_printf(s, "  - quota datas: %4d in quota files:%4d\n",
 605                            si->ndirty_qdata, si->nquota_files);
 606                 seq_printf(s, "  - meta: %4d in %4d\n",
 607                            si->ndirty_meta, si->meta_pages);
 608                 seq_printf(s, "  - imeta: %4d\n",
 609                            si->ndirty_imeta);
 610                 seq_printf(s, "  - fsync mark: %4lld\n",
 611                            percpu_counter_sum_positive(
 612                                         &sbi->rf_node_block_count));
 613                 seq_printf(s, "  - NATs: %9d/%9d\n  - SITs: %9d/%9d\n",
 614                            si->dirty_nats, si->nats, si->dirty_sits, si->sits);
 615                 seq_printf(s, "  - free_nids: %9d/%9d\n  - alloc_nids: %9d\n",
 616                            si->free_nids, si->avail_nids, si->alloc_nids);
 617                 seq_puts(s, "\nDistribution of User Blocks:");
 618                 seq_puts(s, " [ valid | invalid | free ]\n");
 619                 seq_puts(s, "  [");
 620
 621                 for (j = 0; j < si->util_valid; j++)
 622                         seq_putc(s, '-');
 623                 seq_putc(s, '|');
 624
 625                 for (j = 0; j < si->util_invalid; j++)
 626                         seq_putc(s, '-');
 627                 seq_putc(s, '|');
 628
 629                 for (j = 0; j < si->util_free; j++)
 630                         seq_putc(s, '-');
 631                 seq_puts(s, "]\n\n");
 632                 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
 633                 seq_printf(s, "SSR: %u blocks in %u segments\n",
 634                            si->block_count[SSR], si->segment_count[SSR]);
 635                 seq_printf(s, "LFS: %u blocks in %u segments\n",
 636                            si->block_count[LFS], si->segment_count[LFS]);
 637
 638                 /* segment usage info */
 639                 f2fs_update_sit_info(sbi);
 640                 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
 641                            si->bimodal, si->avg_vblocks);
 642
 643                 /* memory footprint */
 644                 update_mem_info(sbi);
 645                 seq_printf(s, "\nMemory: %llu KB\n",
 646                         (si->base_mem + si->cache_mem + si->page_mem) >> 10);
 647                 seq_printf(s, "  - static: %llu KB\n",
 648                                 si->base_mem >> 10);
 649                 seq_printf(s, "  - cached all: %llu KB\n",
 650                                 si->cache_mem >> 10);
 651                 seq_printf(s, "  - read extent cache: %llu KB\n",
 652                                 si->ext_mem[EX_READ] >> 10);
 653                 seq_printf(s, "  - block age extent cache: %llu KB\n",
 654                                 si->ext_mem[EX_BLOCK_AGE] >> 10);
 655                 seq_printf(s, "  - paged : %llu KB\n",
 656                                 si->page_mem >> 10);
 657         }
 658         raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
 659         return 0;
 660 }
 661
 662 DEFINE_SHOW_ATTRIBUTE(stat);
 663 #endif
 664
 665 int f2fs_build_stats(struct f2fs_sb_info *sbi)
 666 {
 667         struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
 668         struct f2fs_stat_info *si;
 669         unsigned long flags;
 670         int i;
 671
 672         si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
 673         if (!si)
 674                 return -ENOMEM;
 675
 676         si->all_area_segs = le32_to_cpu(raw_super->segment_count);
 677         si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
 678         si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
 679         si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
 680         si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
 681         si->main_area_sections = le32_to_cpu(raw_super->section_count);
 682         si->main_area_zones = si->main_area_sections /
 683                                 le32_to_cpu(raw_super->secs_per_zone);
 684         si->sbi = sbi;
 685         sbi->stat_info = si;
 686
 687         /* general extent cache stats */
 688         for (i = 0; i < NR_EXTENT_CACHES; i++) {
 689                 atomic64_set(&sbi->total_hit_ext[i], 0);
 690                 atomic64_set(&sbi->read_hit_rbtree[i], 0);
 691                 atomic64_set(&sbi->read_hit_cached[i], 0);
 692         }
 693
 694         /* read extent_cache only */
 695         atomic64_set(&sbi->read_hit_largest, 0);
 696
 697         atomic_set(&sbi->inline_xattr, 0);
 698         atomic_set(&sbi->inline_inode, 0);
 699         atomic_set(&sbi->inline_dir, 0);
 700         atomic_set(&sbi->compr_inode, 0);
 701         atomic64_set(&sbi->compr_blocks, 0);
 702         atomic_set(&sbi->swapfile_inode, 0);
 703         atomic_set(&sbi->atomic_files, 0);
 704         atomic_set(&sbi->inplace_count, 0);
 705         for (i = META_CP; i < META_MAX; i++)
 706                 atomic_set(&sbi->meta_count[i], 0);
 707         for (i = 0; i < MAX_CALL_TYPE; i++)
 708                 atomic_set(&sbi->cp_call_count[i], 0);
 709
 710         atomic_set(&sbi->max_aw_cnt, 0);
 711
 712         raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
 713         list_add_tail(&si->stat_list, &f2fs_stat_list);
 714         raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
 715
 716         return 0;
 717 }
 718
 719 void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
 720 {
 721         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 722         unsigned long flags;
 723
 724         raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
 725         list_del(&si->stat_list);
 726         raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
 727
 728         kfree(si);
 729 }
 730
 731 void __init f2fs_create_root_stats(void)
 732 {
 733 #ifdef CONFIG_DEBUG_FS
 734         f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
 735
 736         debugfs_create_file("status", 0444, f2fs_debugfs_root, NULL,
 737                             &stat_fops);
 738 #endif
 739 }
 740
 741 void f2fs_destroy_root_stats(void)
 742 {
 743 #ifdef CONFIG_DEBUG_FS
 744         debugfs_remove_recursive(f2fs_debugfs_root);
 745         f2fs_debugfs_root = NULL;
 746 #endif
 747 }