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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
23static LIST_HEAD(f2fs_stat_list);
24static DEFINE_MUTEX(f2fs_stat_mutex);
25#ifdef CONFIG_DEBUG_FS
26static struct dentry *f2fs_debugfs_root;
27#endif
28
29/*
30 * This function calculates BDF of every segments
31 */
32void 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 = 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
63static 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 /* validation check of the segment numbers */
76 si->hit_largest = atomic64_read(&sbi->read_hit_largest);
77 si->hit_cached = atomic64_read(&sbi->read_hit_cached);
78 si->hit_rbtree = atomic64_read(&sbi->read_hit_rbtree);
79 si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree;
80 si->total_ext = atomic64_read(&sbi->total_hit_ext);
81 si->ext_tree = atomic_read(&sbi->total_ext_tree);
82 si->zombie_tree = atomic_read(&sbi->total_zombie_tree);
83 si->ext_node = atomic_read(&sbi->total_ext_node);
84 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
85 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
86 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
87 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
88 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
89 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
90 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
91 si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
92 si->nquota_files = sbi->nquota_files;
93 si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
94 si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
95 si->aw_cnt = sbi->atomic_files;
96 si->vw_cnt = atomic_read(&sbi->vw_cnt);
97 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
98 si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt);
99 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
100 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
101 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
102 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
103 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
104 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
105 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
106 if (SM_I(sbi)->fcc_info) {
107 si->nr_flushed =
108 atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
109 si->nr_flushing =
110 atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
111 si->flush_list_empty =
112 llist_empty(&SM_I(sbi)->fcc_info->issue_list);
113 }
114 if (SM_I(sbi)->dcc_info) {
115 si->nr_discarded =
116 atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
117 si->nr_discarding =
118 atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
119 si->nr_discard_cmd =
120 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
121 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
122 }
123 si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt);
124 si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt);
125 si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt);
126 spin_lock(&sbi->cprc_info.stat_lock);
127 si->cur_ckpt_time = sbi->cprc_info.cur_time;
128 si->peak_ckpt_time = sbi->cprc_info.peak_time;
129 spin_unlock(&sbi->cprc_info.stat_lock);
130 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
131 si->rsvd_segs = reserved_segments(sbi);
132 si->overp_segs = overprovision_segments(sbi);
133 si->valid_count = valid_user_blocks(sbi);
134 si->discard_blks = discard_blocks(sbi);
135 si->valid_node_count = valid_node_count(sbi);
136 si->valid_inode_count = valid_inode_count(sbi);
137 si->inline_xattr = atomic_read(&sbi->inline_xattr);
138 si->inline_inode = atomic_read(&sbi->inline_inode);
139 si->inline_dir = atomic_read(&sbi->inline_dir);
140 si->compr_inode = atomic_read(&sbi->compr_inode);
141 si->compr_blocks = atomic64_read(&sbi->compr_blocks);
142 si->append = sbi->im[APPEND_INO].ino_num;
143 si->update = sbi->im[UPDATE_INO].ino_num;
144 si->orphans = sbi->im[ORPHAN_INO].ino_num;
145 si->utilization = utilization(sbi);
146
147 si->free_segs = free_segments(sbi);
148 si->free_secs = free_sections(sbi);
149 si->prefree_count = prefree_segments(sbi);
150 si->dirty_count = dirty_segments(sbi);
151 if (sbi->node_inode)
152 si->node_pages = NODE_MAPPING(sbi)->nrpages;
153 if (sbi->meta_inode)
154 si->meta_pages = META_MAPPING(sbi)->nrpages;
155#ifdef CONFIG_F2FS_FS_COMPRESSION
156 if (sbi->compress_inode) {
157 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages;
158 si->compress_page_hit = atomic_read(&sbi->compress_page_hit);
159 }
160#endif
161 si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
162 si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
163 si->sits = MAIN_SEGS(sbi);
164 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
165 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
166 si->avail_nids = NM_I(sbi)->available_nids;
167 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
168 si->io_skip_bggc = sbi->io_skip_bggc;
169 si->other_skip_bggc = sbi->other_skip_bggc;
170 si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC];
171 si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC];
172 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
173 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
174 / 2;
175 si->util_valid = (int)(written_block_count(sbi) >>
176 sbi->log_blocks_per_seg)
177 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
178 / 2;
179 si->util_invalid = 50 - si->util_free - si->util_valid;
180 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
181 struct curseg_info *curseg = CURSEG_I(sbi, i);
182
183 si->curseg[i] = curseg->segno;
184 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
185 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
186 }
187
188 for (i = META_CP; i < META_MAX; i++)
189 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
190
191 for (i = 0; i < NO_CHECK_TYPE; i++) {
192 si->dirty_seg[i] = 0;
193 si->full_seg[i] = 0;
194 si->valid_blks[i] = 0;
195 }
196
197 for (i = 0; i < MAIN_SEGS(sbi); i++) {
198 int blks = get_seg_entry(sbi, i)->valid_blocks;
199 int type = get_seg_entry(sbi, i)->type;
200
201 if (!blks)
202 continue;
203
204 if (blks == sbi->blocks_per_seg)
205 si->full_seg[type]++;
206 else
207 si->dirty_seg[type]++;
208 si->valid_blks[type] += blks;
209 }
210
211 for (i = 0; i < 2; i++) {
212 si->segment_count[i] = sbi->segment_count[i];
213 si->block_count[i] = sbi->block_count[i];
214 }
215
216 si->inplace_count = atomic_read(&sbi->inplace_count);
217}
218
219/*
220 * This function calculates memory footprint.
221 */
222static void update_mem_info(struct f2fs_sb_info *sbi)
223{
224 struct f2fs_stat_info *si = F2FS_STAT(sbi);
225 int i;
226
227 if (si->base_mem)
228 goto get_cache;
229
230 /* build stat */
231 si->base_mem = sizeof(struct f2fs_stat_info);
232
233 /* build superblock */
234 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
235 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
236 si->base_mem += sizeof(*sbi->ckpt);
237
238 /* build sm */
239 si->base_mem += sizeof(struct f2fs_sm_info);
240
241 /* build sit */
242 si->base_mem += sizeof(struct sit_info);
243 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
244 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
245 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
246 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
247 si->base_mem += SIT_VBLOCK_MAP_SIZE;
248 if (__is_large_section(sbi))
249 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
250 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
251
252 /* build free segmap */
253 si->base_mem += sizeof(struct free_segmap_info);
254 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
255 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
256
257 /* build curseg */
258 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
259 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
260
261 /* build dirty segmap */
262 si->base_mem += sizeof(struct dirty_seglist_info);
263 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
264 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
265
266 /* build nm */
267 si->base_mem += sizeof(struct f2fs_nm_info);
268 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
269 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
270 si->base_mem += NM_I(sbi)->nat_blocks *
271 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
272 si->base_mem += NM_I(sbi)->nat_blocks / 8;
273 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
274
275get_cache:
276 si->cache_mem = 0;
277
278 /* build gc */
279 if (sbi->gc_thread)
280 si->cache_mem += sizeof(struct f2fs_gc_kthread);
281
282 /* build merge flush thread */
283 if (SM_I(sbi)->fcc_info)
284 si->cache_mem += sizeof(struct flush_cmd_control);
285 if (SM_I(sbi)->dcc_info) {
286 si->cache_mem += sizeof(struct discard_cmd_control);
287 si->cache_mem += sizeof(struct discard_cmd) *
288 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
289 }
290
291 /* free nids */
292 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
293 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
294 sizeof(struct free_nid);
295 si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
296 sizeof(struct nat_entry);
297 si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
298 sizeof(struct nat_entry_set);
299 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
300 for (i = 0; i < MAX_INO_ENTRY; i++)
301 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
302 si->cache_mem += atomic_read(&sbi->total_ext_tree) *
303 sizeof(struct extent_tree);
304 si->cache_mem += atomic_read(&sbi->total_ext_node) *
305 sizeof(struct extent_node);
306
307 si->page_mem = 0;
308 if (sbi->node_inode) {
309 unsigned npages = NODE_MAPPING(sbi)->nrpages;
310
311 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
312 }
313 if (sbi->meta_inode) {
314 unsigned npages = META_MAPPING(sbi)->nrpages;
315
316 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
317 }
318#ifdef CONFIG_F2FS_FS_COMPRESSION
319 if (sbi->compress_inode) {
320 unsigned npages = COMPRESS_MAPPING(sbi)->nrpages;
321 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
322 }
323#endif
324}
325
326static int stat_show(struct seq_file *s, void *v)
327{
328 struct f2fs_stat_info *si;
329 int i = 0;
330 int j;
331
332 mutex_lock(&f2fs_stat_mutex);
333 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
334 update_general_status(si->sbi);
335
336 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
337 si->sbi->sb->s_bdev, i++,
338 f2fs_readonly(si->sbi->sb) ? "RO": "RW",
339 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
340 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good"));
341 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
342 si->sit_area_segs, si->nat_area_segs);
343 seq_printf(s, "[SSA: %d] [MAIN: %d",
344 si->ssa_area_segs, si->main_area_segs);
345 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
346 si->overp_segs, si->rsvd_segs);
347 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",
348 ktime_get_boottime_seconds(),
349 SIT_I(si->sbi)->mounted_time);
350 if (test_opt(si->sbi, DISCARD))
351 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
352 si->utilization, si->valid_count, si->discard_blks);
353 else
354 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
355 si->utilization, si->valid_count);
356
357 seq_printf(s, " - Node: %u (Inode: %u, ",
358 si->valid_node_count, si->valid_inode_count);
359 seq_printf(s, "Other: %u)\n - Data: %u\n",
360 si->valid_node_count - si->valid_inode_count,
361 si->valid_count - si->valid_node_count);
362 seq_printf(s, " - Inline_xattr Inode: %u\n",
363 si->inline_xattr);
364 seq_printf(s, " - Inline_data Inode: %u\n",
365 si->inline_inode);
366 seq_printf(s, " - Inline_dentry Inode: %u\n",
367 si->inline_dir);
368 seq_printf(s, " - Compressed Inode: %u, Blocks: %llu\n",
369 si->compr_inode, si->compr_blocks);
370 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
371 si->orphans, si->append, si->update);
372 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
373 si->main_area_segs, si->main_area_sections,
374 si->main_area_zones);
375 seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n",
376 "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
377 seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n",
378 si->curseg[CURSEG_COLD_DATA],
379 si->cursec[CURSEG_COLD_DATA],
380 si->curzone[CURSEG_COLD_DATA],
381 si->dirty_seg[CURSEG_COLD_DATA],
382 si->full_seg[CURSEG_COLD_DATA],
383 si->valid_blks[CURSEG_COLD_DATA]);
384 seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n",
385 si->curseg[CURSEG_WARM_DATA],
386 si->cursec[CURSEG_WARM_DATA],
387 si->curzone[CURSEG_WARM_DATA],
388 si->dirty_seg[CURSEG_WARM_DATA],
389 si->full_seg[CURSEG_WARM_DATA],
390 si->valid_blks[CURSEG_WARM_DATA]);
391 seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n",
392 si->curseg[CURSEG_HOT_DATA],
393 si->cursec[CURSEG_HOT_DATA],
394 si->curzone[CURSEG_HOT_DATA],
395 si->dirty_seg[CURSEG_HOT_DATA],
396 si->full_seg[CURSEG_HOT_DATA],
397 si->valid_blks[CURSEG_HOT_DATA]);
398 seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n",
399 si->curseg[CURSEG_HOT_NODE],
400 si->cursec[CURSEG_HOT_NODE],
401 si->curzone[CURSEG_HOT_NODE],
402 si->dirty_seg[CURSEG_HOT_NODE],
403 si->full_seg[CURSEG_HOT_NODE],
404 si->valid_blks[CURSEG_HOT_NODE]);
405 seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n",
406 si->curseg[CURSEG_WARM_NODE],
407 si->cursec[CURSEG_WARM_NODE],
408 si->curzone[CURSEG_WARM_NODE],
409 si->dirty_seg[CURSEG_WARM_NODE],
410 si->full_seg[CURSEG_WARM_NODE],
411 si->valid_blks[CURSEG_WARM_NODE]);
412 seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
413 si->curseg[CURSEG_COLD_NODE],
414 si->cursec[CURSEG_COLD_NODE],
415 si->curzone[CURSEG_COLD_NODE],
416 si->dirty_seg[CURSEG_COLD_NODE],
417 si->full_seg[CURSEG_COLD_NODE],
418 si->valid_blks[CURSEG_COLD_NODE]);
419 seq_printf(s, " - Pinned file: %8d %8d %8d\n",
420 si->curseg[CURSEG_COLD_DATA_PINNED],
421 si->cursec[CURSEG_COLD_DATA_PINNED],
422 si->curzone[CURSEG_COLD_DATA_PINNED]);
423 seq_printf(s, " - ATGC data: %8d %8d %8d\n",
424 si->curseg[CURSEG_ALL_DATA_ATGC],
425 si->cursec[CURSEG_ALL_DATA_ATGC],
426 si->curzone[CURSEG_ALL_DATA_ATGC]);
427 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
428 si->main_area_segs - si->dirty_count -
429 si->prefree_count - si->free_segs,
430 si->dirty_count);
431 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
432 si->prefree_count, si->free_segs, si->free_secs);
433 seq_printf(s, "CP calls: %d (BG: %d)\n",
434 si->cp_count, si->bg_cp_count);
435 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
436 seq_printf(s, " - sit blocks : %u\n",
437 si->meta_count[META_SIT]);
438 seq_printf(s, " - nat blocks : %u\n",
439 si->meta_count[META_NAT]);
440 seq_printf(s, " - ssa blocks : %u\n",
441 si->meta_count[META_SSA]);
442 seq_printf(s, "CP merge (Queued: %4d, Issued: %4d, Total: %4d, "
443 "Cur time: %4d(ms), Peak time: %4d(ms))\n",
444 si->nr_queued_ckpt, si->nr_issued_ckpt,
445 si->nr_total_ckpt, si->cur_ckpt_time,
446 si->peak_ckpt_time);
447 seq_printf(s, "GC calls: %d (BG: %d)\n",
448 si->call_count, si->bg_gc);
449 seq_printf(s, " - data segments : %d (%d)\n",
450 si->data_segs, si->bg_data_segs);
451 seq_printf(s, " - node segments : %d (%d)\n",
452 si->node_segs, si->bg_node_segs);
453 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
454 si->bg_data_blks + si->bg_node_blks);
455 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
456 si->bg_data_blks);
457 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
458 si->bg_node_blks);
459 seq_printf(s, "Skipped : atomic write %llu (%llu)\n",
460 si->skipped_atomic_files[BG_GC] +
461 si->skipped_atomic_files[FG_GC],
462 si->skipped_atomic_files[BG_GC]);
463 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
464 si->io_skip_bggc, si->other_skip_bggc);
465 seq_puts(s, "\nExtent Cache:\n");
466 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
467 si->hit_largest, si->hit_cached,
468 si->hit_rbtree);
469 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
470 !si->total_ext ? 0 :
471 div64_u64(si->hit_total * 100, si->total_ext),
472 si->hit_total, si->total_ext);
473 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
474 si->ext_tree, si->zombie_tree, si->ext_node);
475 seq_puts(s, "\nBalancing F2FS Async:\n");
476 seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
477 si->nr_dio_read, si->nr_dio_write);
478 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
479 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
480 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
481 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
482 si->nr_wb_cp_data, si->nr_wb_data,
483 si->nr_flushing, si->nr_flushed,
484 si->flush_list_empty,
485 si->nr_discarding, si->nr_discarded,
486 si->nr_discard_cmd, si->undiscard_blks);
487 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), "
488 "volatile IO: %4d (Max. %4d)\n",
489 si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
490 si->vw_cnt, si->max_vw_cnt);
491 seq_printf(s, " - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit);
492 seq_printf(s, " - nodes: %4d in %4d\n",
493 si->ndirty_node, si->node_pages);
494 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
495 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
496 seq_printf(s, " - datas: %4d in files:%4d\n",
497 si->ndirty_data, si->ndirty_files);
498 seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
499 si->ndirty_qdata, si->nquota_files);
500 seq_printf(s, " - meta: %4d in %4d\n",
501 si->ndirty_meta, si->meta_pages);
502 seq_printf(s, " - imeta: %4d\n",
503 si->ndirty_imeta);
504 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
505 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
506 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
507 si->free_nids, si->avail_nids, si->alloc_nids);
508 seq_puts(s, "\nDistribution of User Blocks:");
509 seq_puts(s, " [ valid | invalid | free ]\n");
510 seq_puts(s, " [");
511
512 for (j = 0; j < si->util_valid; j++)
513 seq_putc(s, '-');
514 seq_putc(s, '|');
515
516 for (j = 0; j < si->util_invalid; j++)
517 seq_putc(s, '-');
518 seq_putc(s, '|');
519
520 for (j = 0; j < si->util_free; j++)
521 seq_putc(s, '-');
522 seq_puts(s, "]\n\n");
523 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
524 seq_printf(s, "SSR: %u blocks in %u segments\n",
525 si->block_count[SSR], si->segment_count[SSR]);
526 seq_printf(s, "LFS: %u blocks in %u segments\n",
527 si->block_count[LFS], si->segment_count[LFS]);
528
529 /* segment usage info */
530 f2fs_update_sit_info(si->sbi);
531 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
532 si->bimodal, si->avg_vblocks);
533
534 /* memory footprint */
535 update_mem_info(si->sbi);
536 seq_printf(s, "\nMemory: %llu KB\n",
537 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
538 seq_printf(s, " - static: %llu KB\n",
539 si->base_mem >> 10);
540 seq_printf(s, " - cached: %llu KB\n",
541 si->cache_mem >> 10);
542 seq_printf(s, " - paged : %llu KB\n",
543 si->page_mem >> 10);
544 }
545 mutex_unlock(&f2fs_stat_mutex);
546 return 0;
547}
548
549DEFINE_SHOW_ATTRIBUTE(stat);
550#endif
551
552int f2fs_build_stats(struct f2fs_sb_info *sbi)
553{
554 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
555 struct f2fs_stat_info *si;
556 int i;
557
558 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
559 if (!si)
560 return -ENOMEM;
561
562 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
563 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
564 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
565 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
566 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
567 si->main_area_sections = le32_to_cpu(raw_super->section_count);
568 si->main_area_zones = si->main_area_sections /
569 le32_to_cpu(raw_super->secs_per_zone);
570 si->sbi = sbi;
571 sbi->stat_info = si;
572
573 atomic64_set(&sbi->total_hit_ext, 0);
574 atomic64_set(&sbi->read_hit_rbtree, 0);
575 atomic64_set(&sbi->read_hit_largest, 0);
576 atomic64_set(&sbi->read_hit_cached, 0);
577
578 atomic_set(&sbi->inline_xattr, 0);
579 atomic_set(&sbi->inline_inode, 0);
580 atomic_set(&sbi->inline_dir, 0);
581 atomic_set(&sbi->compr_inode, 0);
582 atomic64_set(&sbi->compr_blocks, 0);
583 atomic_set(&sbi->inplace_count, 0);
584 for (i = META_CP; i < META_MAX; i++)
585 atomic_set(&sbi->meta_count[i], 0);
586
587 atomic_set(&sbi->vw_cnt, 0);
588 atomic_set(&sbi->max_aw_cnt, 0);
589 atomic_set(&sbi->max_vw_cnt, 0);
590
591 mutex_lock(&f2fs_stat_mutex);
592 list_add_tail(&si->stat_list, &f2fs_stat_list);
593 mutex_unlock(&f2fs_stat_mutex);
594
595 return 0;
596}
597
598void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
599{
600 struct f2fs_stat_info *si = F2FS_STAT(sbi);
601
602 mutex_lock(&f2fs_stat_mutex);
603 list_del(&si->stat_list);
604 mutex_unlock(&f2fs_stat_mutex);
605
606 kfree(si);
607}
608
609void __init f2fs_create_root_stats(void)
610{
611#ifdef CONFIG_DEBUG_FS
612 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
613
614 debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL,
615 &stat_fops);
616#endif
617}
618
619void f2fs_destroy_root_stats(void)
620{
621#ifdef CONFIG_DEBUG_FS
622 debugfs_remove_recursive(f2fs_debugfs_root);
623 f2fs_debugfs_root = NULL;
624#endif
625}
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
23static LIST_HEAD(f2fs_stat_list);
24static DEFINE_RAW_SPINLOCK(f2fs_stat_lock);
25#ifdef CONFIG_DEBUG_FS
26static struct dentry *f2fs_debugfs_root;
27#endif
28
29/*
30 * This function calculates BDF of every segments
31 */
32void 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
63static void update_multidevice_stats(struct f2fs_sb_info *sbi)
64{
65 struct f2fs_stat_info *si = F2FS_STAT(sbi);
66 struct f2fs_dev_stats *dev_stats = si->dev_stats;
67 int i, j;
68
69 if (!f2fs_is_multi_device(sbi))
70 return;
71
72 memset(dev_stats, 0, sizeof(struct f2fs_dev_stats) * sbi->s_ndevs);
73 for (i = 0; i < sbi->s_ndevs; i++) {
74 unsigned int start_segno, end_segno;
75 block_t start_blk, end_blk;
76
77 if (i == 0) {
78 start_blk = MAIN_BLKADDR(sbi);
79 end_blk = FDEV(i).end_blk + 1 - SEG0_BLKADDR(sbi);
80 } else {
81 start_blk = FDEV(i).start_blk;
82 end_blk = FDEV(i).end_blk + 1;
83 }
84
85 start_segno = GET_SEGNO(sbi, start_blk);
86 end_segno = GET_SEGNO(sbi, end_blk);
87
88 for (j = start_segno; j < end_segno; j++) {
89 unsigned int seg_blks, sec_blks;
90
91 seg_blks = get_seg_entry(sbi, j)->valid_blocks;
92
93 /* update segment stats */
94 if (IS_CURSEG(sbi, j))
95 dev_stats[i].devstats[0][DEVSTAT_INUSE]++;
96 else if (seg_blks == BLKS_PER_SEG(sbi))
97 dev_stats[i].devstats[0][DEVSTAT_FULL]++;
98 else if (seg_blks != 0)
99 dev_stats[i].devstats[0][DEVSTAT_DIRTY]++;
100 else if (!test_bit(j, FREE_I(sbi)->free_segmap))
101 dev_stats[i].devstats[0][DEVSTAT_FREE]++;
102 else
103 dev_stats[i].devstats[0][DEVSTAT_PREFREE]++;
104
105 if (!__is_large_section(sbi) ||
106 (j % SEGS_PER_SEC(sbi)) != 0)
107 continue;
108
109 sec_blks = get_sec_entry(sbi, j)->valid_blocks;
110
111 /* update section stats */
112 if (IS_CURSEC(sbi, GET_SEC_FROM_SEG(sbi, j)))
113 dev_stats[i].devstats[1][DEVSTAT_INUSE]++;
114 else if (sec_blks == BLKS_PER_SEC(sbi))
115 dev_stats[i].devstats[1][DEVSTAT_FULL]++;
116 else if (sec_blks != 0)
117 dev_stats[i].devstats[1][DEVSTAT_DIRTY]++;
118 else if (!test_bit(GET_SEC_FROM_SEG(sbi, j),
119 FREE_I(sbi)->free_secmap))
120 dev_stats[i].devstats[1][DEVSTAT_FREE]++;
121 else
122 dev_stats[i].devstats[1][DEVSTAT_PREFREE]++;
123 }
124 }
125}
126
127static void update_general_status(struct f2fs_sb_info *sbi)
128{
129 struct f2fs_stat_info *si = F2FS_STAT(sbi);
130 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
131 int i;
132
133 /* these will be changed if online resize is done */
134 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
135 si->main_area_sections = le32_to_cpu(raw_super->section_count);
136 si->main_area_zones = si->main_area_sections /
137 le32_to_cpu(raw_super->secs_per_zone);
138
139 /* general extent cache stats */
140 for (i = 0; i < NR_EXTENT_CACHES; i++) {
141 struct extent_tree_info *eti = &sbi->extent_tree[i];
142
143 si->hit_cached[i] = atomic64_read(&sbi->read_hit_cached[i]);
144 si->hit_rbtree[i] = atomic64_read(&sbi->read_hit_rbtree[i]);
145 si->total_ext[i] = atomic64_read(&sbi->total_hit_ext[i]);
146 si->hit_total[i] = si->hit_cached[i] + si->hit_rbtree[i];
147 si->ext_tree[i] = atomic_read(&eti->total_ext_tree);
148 si->zombie_tree[i] = atomic_read(&eti->total_zombie_tree);
149 si->ext_node[i] = atomic_read(&eti->total_ext_node);
150 }
151 /* read extent_cache only */
152 si->hit_largest = atomic64_read(&sbi->read_hit_largest);
153 si->hit_total[EX_READ] += si->hit_largest;
154
155 /* block age extent_cache only */
156 si->allocated_data_blocks = atomic64_read(&sbi->allocated_data_blocks);
157
158 /* validation check of the segment numbers */
159 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
160 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
161 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
162 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
163 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
164 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
165 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
166 si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
167 si->nquota_files = sbi->nquota_files;
168 si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
169 si->aw_cnt = atomic_read(&sbi->atomic_files);
170 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
171 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
172 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
173 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
174 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
175 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
176 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
177 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
178 if (SM_I(sbi)->fcc_info) {
179 si->nr_flushed =
180 atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
181 si->nr_flushing =
182 atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
183 si->flush_list_empty =
184 llist_empty(&SM_I(sbi)->fcc_info->issue_list);
185 }
186 if (SM_I(sbi)->dcc_info) {
187 si->nr_discarded =
188 atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
189 si->nr_discarding =
190 atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
191 si->nr_discard_cmd =
192 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
193 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
194 }
195 si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt);
196 si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt);
197 si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt);
198 spin_lock(&sbi->cprc_info.stat_lock);
199 si->cur_ckpt_time = sbi->cprc_info.cur_time;
200 si->peak_ckpt_time = sbi->cprc_info.peak_time;
201 spin_unlock(&sbi->cprc_info.stat_lock);
202 si->total_count = BLKS_TO_SEGS(sbi, (int)sbi->user_block_count);
203 si->rsvd_segs = reserved_segments(sbi);
204 si->overp_segs = overprovision_segments(sbi);
205 si->valid_count = valid_user_blocks(sbi);
206 si->discard_blks = discard_blocks(sbi);
207 si->valid_node_count = valid_node_count(sbi);
208 si->valid_inode_count = valid_inode_count(sbi);
209 si->inline_xattr = atomic_read(&sbi->inline_xattr);
210 si->inline_inode = atomic_read(&sbi->inline_inode);
211 si->inline_dir = atomic_read(&sbi->inline_dir);
212 si->compr_inode = atomic_read(&sbi->compr_inode);
213 si->swapfile_inode = atomic_read(&sbi->swapfile_inode);
214 si->compr_blocks = atomic64_read(&sbi->compr_blocks);
215 si->append = sbi->im[APPEND_INO].ino_num;
216 si->update = sbi->im[UPDATE_INO].ino_num;
217 si->orphans = sbi->im[ORPHAN_INO].ino_num;
218 si->utilization = utilization(sbi);
219
220 si->free_segs = free_segments(sbi);
221 si->free_secs = free_sections(sbi);
222 si->prefree_count = prefree_segments(sbi);
223 si->dirty_count = dirty_segments(sbi);
224 if (sbi->node_inode)
225 si->node_pages = NODE_MAPPING(sbi)->nrpages;
226 if (sbi->meta_inode)
227 si->meta_pages = META_MAPPING(sbi)->nrpages;
228#ifdef CONFIG_F2FS_FS_COMPRESSION
229 if (sbi->compress_inode) {
230 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages;
231 si->compress_page_hit = atomic_read(&sbi->compress_page_hit);
232 }
233#endif
234 si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
235 si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
236 si->sits = MAIN_SEGS(sbi);
237 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
238 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
239 si->avail_nids = NM_I(sbi)->available_nids;
240 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
241 si->io_skip_bggc = sbi->io_skip_bggc;
242 si->other_skip_bggc = sbi->other_skip_bggc;
243 si->util_free = (int)(BLKS_TO_SEGS(sbi, free_user_blocks(sbi)))
244 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
245 / 2;
246 si->util_valid = (int)(BLKS_TO_SEGS(sbi, written_block_count(sbi)))
247 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
248 / 2;
249 si->util_invalid = 50 - si->util_free - si->util_valid;
250 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
251 struct curseg_info *curseg = CURSEG_I(sbi, i);
252
253 si->curseg[i] = curseg->segno;
254 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
255 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
256 }
257
258 for (i = META_CP; i < META_MAX; i++)
259 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
260
261 for (i = 0; i < NO_CHECK_TYPE; i++) {
262 si->dirty_seg[i] = 0;
263 si->full_seg[i] = 0;
264 si->valid_blks[i] = 0;
265 }
266
267 for (i = 0; i < MAIN_SEGS(sbi); i++) {
268 int blks = get_seg_entry(sbi, i)->valid_blocks;
269 int type = get_seg_entry(sbi, i)->type;
270
271 if (!blks)
272 continue;
273
274 if (blks == BLKS_PER_SEG(sbi))
275 si->full_seg[type]++;
276 else
277 si->dirty_seg[type]++;
278 si->valid_blks[type] += blks;
279 }
280
281 update_multidevice_stats(sbi);
282
283 for (i = 0; i < MAX_CALL_TYPE; i++)
284 si->cp_call_count[i] = atomic_read(&sbi->cp_call_count[i]);
285
286 for (i = 0; i < 2; i++) {
287 si->segment_count[i] = sbi->segment_count[i];
288 si->block_count[i] = sbi->block_count[i];
289 }
290
291 si->inplace_count = atomic_read(&sbi->inplace_count);
292}
293
294/*
295 * This function calculates memory footprint.
296 */
297static void update_mem_info(struct f2fs_sb_info *sbi)
298{
299 struct f2fs_stat_info *si = F2FS_STAT(sbi);
300 int i;
301
302 if (si->base_mem)
303 goto get_cache;
304
305 /* build stat */
306 si->base_mem = sizeof(struct f2fs_stat_info);
307
308 /* build superblock */
309 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
310 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
311 si->base_mem += sizeof(*sbi->ckpt);
312
313 /* build sm */
314 si->base_mem += sizeof(struct f2fs_sm_info);
315
316 /* build sit */
317 si->base_mem += sizeof(struct sit_info);
318 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
319 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
320 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
321 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
322 si->base_mem += SIT_VBLOCK_MAP_SIZE;
323 if (__is_large_section(sbi))
324 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
325 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
326
327 /* build free segmap */
328 si->base_mem += sizeof(struct free_segmap_info);
329 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
330 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
331
332 /* build curseg */
333 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
334 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
335
336 /* build dirty segmap */
337 si->base_mem += sizeof(struct dirty_seglist_info);
338 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
339 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
340
341 /* build nm */
342 si->base_mem += sizeof(struct f2fs_nm_info);
343 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
344 si->base_mem += F2FS_BLK_TO_BYTES(NM_I(sbi)->nat_bits_blocks);
345 si->base_mem += NM_I(sbi)->nat_blocks *
346 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
347 si->base_mem += NM_I(sbi)->nat_blocks / 8;
348 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
349
350get_cache:
351 si->cache_mem = 0;
352
353 /* build gc */
354 if (sbi->gc_thread)
355 si->cache_mem += sizeof(struct f2fs_gc_kthread);
356
357 /* build merge flush thread */
358 if (SM_I(sbi)->fcc_info)
359 si->cache_mem += sizeof(struct flush_cmd_control);
360 if (SM_I(sbi)->dcc_info) {
361 si->cache_mem += sizeof(struct discard_cmd_control);
362 si->cache_mem += sizeof(struct discard_cmd) *
363 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
364 }
365
366 /* free nids */
367 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
368 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
369 sizeof(struct free_nid);
370 si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
371 sizeof(struct nat_entry);
372 si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
373 sizeof(struct nat_entry_set);
374 for (i = 0; i < MAX_INO_ENTRY; i++)
375 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
376
377 for (i = 0; i < NR_EXTENT_CACHES; i++) {
378 struct extent_tree_info *eti = &sbi->extent_tree[i];
379
380 si->ext_mem[i] = atomic_read(&eti->total_ext_tree) *
381 sizeof(struct extent_tree);
382 si->ext_mem[i] += atomic_read(&eti->total_ext_node) *
383 sizeof(struct extent_node);
384 si->cache_mem += si->ext_mem[i];
385 }
386
387 si->page_mem = 0;
388 if (sbi->node_inode) {
389 unsigned long npages = NODE_MAPPING(sbi)->nrpages;
390
391 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
392 }
393 if (sbi->meta_inode) {
394 unsigned long npages = META_MAPPING(sbi)->nrpages;
395
396 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
397 }
398#ifdef CONFIG_F2FS_FS_COMPRESSION
399 if (sbi->compress_inode) {
400 unsigned long npages = COMPRESS_MAPPING(sbi)->nrpages;
401
402 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
403 }
404#endif
405}
406
407static const char *s_flag[MAX_SBI_FLAG] = {
408 [SBI_IS_DIRTY] = "fs_dirty",
409 [SBI_IS_CLOSE] = "closing",
410 [SBI_NEED_FSCK] = "need_fsck",
411 [SBI_POR_DOING] = "recovering",
412 [SBI_NEED_SB_WRITE] = "sb_dirty",
413 [SBI_NEED_CP] = "need_cp",
414 [SBI_IS_SHUTDOWN] = "shutdown",
415 [SBI_IS_RECOVERED] = "recovered",
416 [SBI_CP_DISABLED] = "cp_disabled",
417 [SBI_CP_DISABLED_QUICK] = "cp_disabled_quick",
418 [SBI_QUOTA_NEED_FLUSH] = "quota_need_flush",
419 [SBI_QUOTA_SKIP_FLUSH] = "quota_skip_flush",
420 [SBI_QUOTA_NEED_REPAIR] = "quota_need_repair",
421 [SBI_IS_RESIZEFS] = "resizefs",
422 [SBI_IS_FREEZING] = "freezefs",
423 [SBI_IS_WRITABLE] = "writable",
424};
425
426static const char *ipu_mode_names[F2FS_IPU_MAX] = {
427 [F2FS_IPU_FORCE] = "FORCE",
428 [F2FS_IPU_SSR] = "SSR",
429 [F2FS_IPU_UTIL] = "UTIL",
430 [F2FS_IPU_SSR_UTIL] = "SSR_UTIL",
431 [F2FS_IPU_FSYNC] = "FSYNC",
432 [F2FS_IPU_ASYNC] = "ASYNC",
433 [F2FS_IPU_NOCACHE] = "NOCACHE",
434 [F2FS_IPU_HONOR_OPU_WRITE] = "HONOR_OPU_WRITE",
435};
436
437static int stat_show(struct seq_file *s, void *v)
438{
439 struct f2fs_stat_info *si;
440 int i = 0, j = 0;
441 unsigned long flags;
442
443 raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
444 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
445 struct f2fs_sb_info *sbi = si->sbi;
446
447 update_general_status(sbi);
448
449 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
450 sbi->sb->s_bdev, i++,
451 f2fs_readonly(sbi->sb) ? "RO" : "RW",
452 is_set_ckpt_flags(sbi, CP_DISABLED_FLAG) ?
453 "Disabled" : (f2fs_cp_error(sbi) ? "Error" : "Good"));
454 if (sbi->s_flag) {
455 seq_puts(s, "[SBI:");
456 for_each_set_bit(j, &sbi->s_flag, MAX_SBI_FLAG)
457 seq_printf(s, " %s", s_flag[j]);
458 seq_puts(s, "]\n");
459 }
460 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
461 si->sit_area_segs, si->nat_area_segs);
462 seq_printf(s, "[SSA: %d] [MAIN: %d",
463 si->ssa_area_segs, si->main_area_segs);
464 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
465 si->overp_segs, si->rsvd_segs);
466 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",
467 ktime_get_boottime_seconds(),
468 SIT_I(sbi)->mounted_time);
469
470 seq_puts(s, "Policy:\n");
471 seq_puts(s, " - IPU: [");
472 if (IS_F2FS_IPU_DISABLE(sbi)) {
473 seq_puts(s, " DISABLE");
474 } else {
475 unsigned long policy = SM_I(sbi)->ipu_policy;
476
477 for_each_set_bit(j, &policy, F2FS_IPU_MAX)
478 seq_printf(s, " %s", ipu_mode_names[j]);
479 }
480 seq_puts(s, " ]\n\n");
481
482 if (test_opt(sbi, DISCARD))
483 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
484 si->utilization, si->valid_count, si->discard_blks);
485 else
486 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
487 si->utilization, si->valid_count);
488
489 seq_printf(s, " - Node: %u (Inode: %u, ",
490 si->valid_node_count, si->valid_inode_count);
491 seq_printf(s, "Other: %u)\n - Data: %u\n",
492 si->valid_node_count - si->valid_inode_count,
493 si->valid_count - si->valid_node_count);
494 seq_printf(s, " - Inline_xattr Inode: %u\n",
495 si->inline_xattr);
496 seq_printf(s, " - Inline_data Inode: %u\n",
497 si->inline_inode);
498 seq_printf(s, " - Inline_dentry Inode: %u\n",
499 si->inline_dir);
500 seq_printf(s, " - Compressed Inode: %u, Blocks: %llu\n",
501 si->compr_inode, si->compr_blocks);
502 seq_printf(s, " - Swapfile Inode: %u\n",
503 si->swapfile_inode);
504 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
505 si->orphans, si->append, si->update);
506 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
507 si->main_area_segs, si->main_area_sections,
508 si->main_area_zones);
509 seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n",
510 "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
511 seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n",
512 si->curseg[CURSEG_COLD_DATA],
513 si->cursec[CURSEG_COLD_DATA],
514 si->curzone[CURSEG_COLD_DATA],
515 si->dirty_seg[CURSEG_COLD_DATA],
516 si->full_seg[CURSEG_COLD_DATA],
517 si->valid_blks[CURSEG_COLD_DATA]);
518 seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n",
519 si->curseg[CURSEG_WARM_DATA],
520 si->cursec[CURSEG_WARM_DATA],
521 si->curzone[CURSEG_WARM_DATA],
522 si->dirty_seg[CURSEG_WARM_DATA],
523 si->full_seg[CURSEG_WARM_DATA],
524 si->valid_blks[CURSEG_WARM_DATA]);
525 seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n",
526 si->curseg[CURSEG_HOT_DATA],
527 si->cursec[CURSEG_HOT_DATA],
528 si->curzone[CURSEG_HOT_DATA],
529 si->dirty_seg[CURSEG_HOT_DATA],
530 si->full_seg[CURSEG_HOT_DATA],
531 si->valid_blks[CURSEG_HOT_DATA]);
532 seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n",
533 si->curseg[CURSEG_HOT_NODE],
534 si->cursec[CURSEG_HOT_NODE],
535 si->curzone[CURSEG_HOT_NODE],
536 si->dirty_seg[CURSEG_HOT_NODE],
537 si->full_seg[CURSEG_HOT_NODE],
538 si->valid_blks[CURSEG_HOT_NODE]);
539 seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n",
540 si->curseg[CURSEG_WARM_NODE],
541 si->cursec[CURSEG_WARM_NODE],
542 si->curzone[CURSEG_WARM_NODE],
543 si->dirty_seg[CURSEG_WARM_NODE],
544 si->full_seg[CURSEG_WARM_NODE],
545 si->valid_blks[CURSEG_WARM_NODE]);
546 seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
547 si->curseg[CURSEG_COLD_NODE],
548 si->cursec[CURSEG_COLD_NODE],
549 si->curzone[CURSEG_COLD_NODE],
550 si->dirty_seg[CURSEG_COLD_NODE],
551 si->full_seg[CURSEG_COLD_NODE],
552 si->valid_blks[CURSEG_COLD_NODE]);
553 seq_printf(s, " - Pinned file: %8d %8d %8d\n",
554 si->curseg[CURSEG_COLD_DATA_PINNED],
555 si->cursec[CURSEG_COLD_DATA_PINNED],
556 si->curzone[CURSEG_COLD_DATA_PINNED]);
557 seq_printf(s, " - ATGC data: %8d %8d %8d\n",
558 si->curseg[CURSEG_ALL_DATA_ATGC],
559 si->cursec[CURSEG_ALL_DATA_ATGC],
560 si->curzone[CURSEG_ALL_DATA_ATGC]);
561 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
562 si->main_area_segs - si->dirty_count -
563 si->prefree_count - si->free_segs,
564 si->dirty_count);
565 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
566 si->prefree_count, si->free_segs, si->free_secs);
567 if (f2fs_is_multi_device(sbi)) {
568 seq_puts(s, "Multidevice stats:\n");
569 seq_printf(s, " [seg: %8s %8s %8s %8s %8s]",
570 "inuse", "dirty", "full", "free", "prefree");
571 if (__is_large_section(sbi))
572 seq_printf(s, " [sec: %8s %8s %8s %8s %8s]\n",
573 "inuse", "dirty", "full", "free", "prefree");
574 else
575 seq_puts(s, "\n");
576
577 for (i = 0; i < sbi->s_ndevs; i++) {
578 seq_printf(s, " #%-2d %8u %8u %8u %8u %8u", i,
579 si->dev_stats[i].devstats[0][DEVSTAT_INUSE],
580 si->dev_stats[i].devstats[0][DEVSTAT_DIRTY],
581 si->dev_stats[i].devstats[0][DEVSTAT_FULL],
582 si->dev_stats[i].devstats[0][DEVSTAT_FREE],
583 si->dev_stats[i].devstats[0][DEVSTAT_PREFREE]);
584 if (!__is_large_section(sbi)) {
585 seq_puts(s, "\n");
586 continue;
587 }
588 seq_printf(s, " %8u %8u %8u %8u %8u\n",
589 si->dev_stats[i].devstats[1][DEVSTAT_INUSE],
590 si->dev_stats[i].devstats[1][DEVSTAT_DIRTY],
591 si->dev_stats[i].devstats[1][DEVSTAT_FULL],
592 si->dev_stats[i].devstats[1][DEVSTAT_FREE],
593 si->dev_stats[i].devstats[1][DEVSTAT_PREFREE]);
594 }
595 seq_puts(s, "\n");
596 }
597 seq_printf(s, "CP calls: %d (BG: %d)\n",
598 si->cp_call_count[TOTAL_CALL],
599 si->cp_call_count[BACKGROUND]);
600 seq_printf(s, "CP count: %d\n", si->cp_count);
601 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
602 seq_printf(s, " - sit blocks : %u\n",
603 si->meta_count[META_SIT]);
604 seq_printf(s, " - nat blocks : %u\n",
605 si->meta_count[META_NAT]);
606 seq_printf(s, " - ssa blocks : %u\n",
607 si->meta_count[META_SSA]);
608 seq_puts(s, "CP merge:\n");
609 seq_printf(s, " - Queued : %4d\n", si->nr_queued_ckpt);
610 seq_printf(s, " - Issued : %4d\n", si->nr_issued_ckpt);
611 seq_printf(s, " - Total : %4d\n", si->nr_total_ckpt);
612 seq_printf(s, " - Cur time : %4d(ms)\n", si->cur_ckpt_time);
613 seq_printf(s, " - Peak time : %4d(ms)\n", si->peak_ckpt_time);
614 seq_printf(s, "GC calls: %d (gc_thread: %d)\n",
615 si->gc_call_count[BACKGROUND] +
616 si->gc_call_count[FOREGROUND],
617 si->gc_call_count[BACKGROUND]);
618 if (__is_large_section(sbi)) {
619 seq_printf(s, " - data sections : %d (BG: %d)\n",
620 si->gc_secs[DATA][BG_GC] + si->gc_secs[DATA][FG_GC],
621 si->gc_secs[DATA][BG_GC]);
622 seq_printf(s, " - node sections : %d (BG: %d)\n",
623 si->gc_secs[NODE][BG_GC] + si->gc_secs[NODE][FG_GC],
624 si->gc_secs[NODE][BG_GC]);
625 }
626 seq_printf(s, " - data segments : %d (BG: %d)\n",
627 si->gc_segs[DATA][BG_GC] + si->gc_segs[DATA][FG_GC],
628 si->gc_segs[DATA][BG_GC]);
629 seq_printf(s, " - node segments : %d (BG: %d)\n",
630 si->gc_segs[NODE][BG_GC] + si->gc_segs[NODE][FG_GC],
631 si->gc_segs[NODE][BG_GC]);
632 seq_puts(s, " - Reclaimed segs :\n");
633 seq_printf(s, " - Normal : %d\n", sbi->gc_reclaimed_segs[GC_NORMAL]);
634 seq_printf(s, " - Idle CB : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_CB]);
635 seq_printf(s, " - Idle Greedy : %d\n",
636 sbi->gc_reclaimed_segs[GC_IDLE_GREEDY]);
637 seq_printf(s, " - Idle AT : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_AT]);
638 seq_printf(s, " - Urgent High : %d\n",
639 sbi->gc_reclaimed_segs[GC_URGENT_HIGH]);
640 seq_printf(s, " - Urgent Mid : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_MID]);
641 seq_printf(s, " - Urgent Low : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_LOW]);
642 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
643 si->bg_data_blks + si->bg_node_blks);
644 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
645 si->bg_data_blks);
646 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
647 si->bg_node_blks);
648 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
649 si->io_skip_bggc, si->other_skip_bggc);
650 seq_puts(s, "\nExtent Cache (Read):\n");
651 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
652 si->hit_largest, si->hit_cached[EX_READ],
653 si->hit_rbtree[EX_READ]);
654 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
655 !si->total_ext[EX_READ] ? 0 :
656 div64_u64(si->hit_total[EX_READ] * 100,
657 si->total_ext[EX_READ]),
658 si->hit_total[EX_READ], si->total_ext[EX_READ]);
659 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
660 si->ext_tree[EX_READ], si->zombie_tree[EX_READ],
661 si->ext_node[EX_READ]);
662 seq_puts(s, "\nExtent Cache (Block Age):\n");
663 seq_printf(s, " - Allocated Data Blocks: %llu\n",
664 si->allocated_data_blocks);
665 seq_printf(s, " - Hit Count: L1:%llu L2:%llu\n",
666 si->hit_cached[EX_BLOCK_AGE],
667 si->hit_rbtree[EX_BLOCK_AGE]);
668 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
669 !si->total_ext[EX_BLOCK_AGE] ? 0 :
670 div64_u64(si->hit_total[EX_BLOCK_AGE] * 100,
671 si->total_ext[EX_BLOCK_AGE]),
672 si->hit_total[EX_BLOCK_AGE],
673 si->total_ext[EX_BLOCK_AGE]);
674 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
675 si->ext_tree[EX_BLOCK_AGE],
676 si->zombie_tree[EX_BLOCK_AGE],
677 si->ext_node[EX_BLOCK_AGE]);
678 seq_puts(s, "\nBalancing F2FS Async:\n");
679 seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
680 si->nr_dio_read, si->nr_dio_write);
681 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
682 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
683 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), ",
684 si->nr_wb_cp_data, si->nr_wb_data,
685 si->nr_flushing, si->nr_flushed,
686 si->flush_list_empty);
687 seq_printf(s, "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
688 si->nr_discarding, si->nr_discarded,
689 si->nr_discard_cmd, si->undiscard_blks);
690 seq_printf(s, " - atomic IO: %4d (Max. %4d)\n",
691 si->aw_cnt, si->max_aw_cnt);
692 seq_printf(s, " - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit);
693 seq_printf(s, " - nodes: %4d in %4d\n",
694 si->ndirty_node, si->node_pages);
695 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
696 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
697 seq_printf(s, " - data: %4d in files:%4d\n",
698 si->ndirty_data, si->ndirty_files);
699 seq_printf(s, " - quota data: %4d in quota files:%4d\n",
700 si->ndirty_qdata, si->nquota_files);
701 seq_printf(s, " - meta: %4d in %4d\n",
702 si->ndirty_meta, si->meta_pages);
703 seq_printf(s, " - imeta: %4d\n",
704 si->ndirty_imeta);
705 seq_printf(s, " - fsync mark: %4lld\n",
706 percpu_counter_sum_positive(
707 &sbi->rf_node_block_count));
708 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
709 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
710 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
711 si->free_nids, si->avail_nids, si->alloc_nids);
712 seq_puts(s, "\nDistribution of User Blocks:");
713 seq_puts(s, " [ valid | invalid | free ]\n");
714 seq_puts(s, " [");
715
716 for (j = 0; j < si->util_valid; j++)
717 seq_putc(s, '-');
718 seq_putc(s, '|');
719
720 for (j = 0; j < si->util_invalid; j++)
721 seq_putc(s, '-');
722 seq_putc(s, '|');
723
724 for (j = 0; j < si->util_free; j++)
725 seq_putc(s, '-');
726 seq_puts(s, "]\n\n");
727 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
728 seq_printf(s, "SSR: %u blocks in %u segments\n",
729 si->block_count[SSR], si->segment_count[SSR]);
730 seq_printf(s, "LFS: %u blocks in %u segments\n",
731 si->block_count[LFS], si->segment_count[LFS]);
732
733 /* segment usage info */
734 f2fs_update_sit_info(sbi);
735 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
736 si->bimodal, si->avg_vblocks);
737
738 /* memory footprint */
739 update_mem_info(sbi);
740 seq_printf(s, "\nMemory: %llu KB\n",
741 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
742 seq_printf(s, " - static: %llu KB\n",
743 si->base_mem >> 10);
744 seq_printf(s, " - cached all: %llu KB\n",
745 si->cache_mem >> 10);
746 seq_printf(s, " - read extent cache: %llu KB\n",
747 si->ext_mem[EX_READ] >> 10);
748 seq_printf(s, " - block age extent cache: %llu KB\n",
749 si->ext_mem[EX_BLOCK_AGE] >> 10);
750 seq_printf(s, " - paged : %llu KB\n",
751 si->page_mem >> 10);
752 }
753 raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
754 return 0;
755}
756
757DEFINE_SHOW_ATTRIBUTE(stat);
758#endif
759
760int f2fs_build_stats(struct f2fs_sb_info *sbi)
761{
762 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
763 struct f2fs_stat_info *si;
764 struct f2fs_dev_stats *dev_stats;
765 unsigned long flags;
766 int i;
767
768 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
769 if (!si)
770 return -ENOMEM;
771
772 dev_stats = f2fs_kzalloc(sbi, sizeof(struct f2fs_dev_stats) *
773 sbi->s_ndevs, GFP_KERNEL);
774 if (!dev_stats) {
775 kfree(si);
776 return -ENOMEM;
777 }
778
779 si->dev_stats = dev_stats;
780
781 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
782 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
783 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
784 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
785 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
786 si->main_area_sections = le32_to_cpu(raw_super->section_count);
787 si->main_area_zones = si->main_area_sections /
788 le32_to_cpu(raw_super->secs_per_zone);
789 si->sbi = sbi;
790 sbi->stat_info = si;
791
792 /* general extent cache stats */
793 for (i = 0; i < NR_EXTENT_CACHES; i++) {
794 atomic64_set(&sbi->total_hit_ext[i], 0);
795 atomic64_set(&sbi->read_hit_rbtree[i], 0);
796 atomic64_set(&sbi->read_hit_cached[i], 0);
797 }
798
799 /* read extent_cache only */
800 atomic64_set(&sbi->read_hit_largest, 0);
801
802 atomic_set(&sbi->inline_xattr, 0);
803 atomic_set(&sbi->inline_inode, 0);
804 atomic_set(&sbi->inline_dir, 0);
805 atomic_set(&sbi->compr_inode, 0);
806 atomic64_set(&sbi->compr_blocks, 0);
807 atomic_set(&sbi->swapfile_inode, 0);
808 atomic_set(&sbi->atomic_files, 0);
809 atomic_set(&sbi->inplace_count, 0);
810 for (i = META_CP; i < META_MAX; i++)
811 atomic_set(&sbi->meta_count[i], 0);
812 for (i = 0; i < MAX_CALL_TYPE; i++)
813 atomic_set(&sbi->cp_call_count[i], 0);
814
815 atomic_set(&sbi->max_aw_cnt, 0);
816
817 raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
818 list_add_tail(&si->stat_list, &f2fs_stat_list);
819 raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
820
821 return 0;
822}
823
824void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
825{
826 struct f2fs_stat_info *si = F2FS_STAT(sbi);
827 unsigned long flags;
828
829 raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
830 list_del(&si->stat_list);
831 raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
832
833 kfree(si->dev_stats);
834 kfree(si);
835}
836
837void __init f2fs_create_root_stats(void)
838{
839#ifdef CONFIG_DEBUG_FS
840 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
841
842 debugfs_create_file("status", 0444, f2fs_debugfs_root, NULL,
843 &stat_fops);
844#endif
845}
846
847void f2fs_destroy_root_stats(void)
848{
849#ifdef CONFIG_DEBUG_FS
850 debugfs_remove_recursive(f2fs_debugfs_root);
851 f2fs_debugfs_root = NULL;
852#endif
853}