GNU Linux-libre 6.9-gnu
[releases.git] / 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 }