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