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1/*
2 * f2fs debugging statistics
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 * Copyright (c) 2012 Linux Foundation
7 * Copyright (c) 2012 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/fs.h>
15#include <linux/backing-dev.h>
16#include <linux/f2fs_fs.h>
17#include <linux/blkdev.h>
18#include <linux/debugfs.h>
19#include <linux/seq_file.h>
20
21#include "f2fs.h"
22#include "node.h"
23#include "segment.h"
24#include "gc.h"
25
26static LIST_HEAD(f2fs_stat_list);
27static struct dentry *f2fs_debugfs_root;
28static DEFINE_MUTEX(f2fs_stat_mutex);
29
30static void update_general_status(struct f2fs_sb_info *sbi)
31{
32 struct f2fs_stat_info *si = F2FS_STAT(sbi);
33 int i;
34
35 /* validation check of the segment numbers */
36 si->hit_largest = atomic64_read(&sbi->read_hit_largest);
37 si->hit_cached = atomic64_read(&sbi->read_hit_cached);
38 si->hit_rbtree = atomic64_read(&sbi->read_hit_rbtree);
39 si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree;
40 si->total_ext = atomic64_read(&sbi->total_hit_ext);
41 si->ext_tree = atomic_read(&sbi->total_ext_tree);
42 si->zombie_tree = atomic_read(&sbi->total_zombie_tree);
43 si->ext_node = atomic_read(&sbi->total_ext_node);
44 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
45 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
46 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
47 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
48 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
49 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
50 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
51 si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
52 si->nquota_files = sbi->nquota_files;
53 si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
54 si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
55 si->aw_cnt = atomic_read(&sbi->aw_cnt);
56 si->vw_cnt = atomic_read(&sbi->vw_cnt);
57 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
58 si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt);
59 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
60 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
61 if (SM_I(sbi) && SM_I(sbi)->fcc_info) {
62 si->nr_flushed =
63 atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
64 si->nr_flushing =
65 atomic_read(&SM_I(sbi)->fcc_info->issing_flush);
66 si->flush_list_empty =
67 llist_empty(&SM_I(sbi)->fcc_info->issue_list);
68 }
69 if (SM_I(sbi) && SM_I(sbi)->dcc_info) {
70 si->nr_discarded =
71 atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
72 si->nr_discarding =
73 atomic_read(&SM_I(sbi)->dcc_info->issing_discard);
74 si->nr_discard_cmd =
75 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
76 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
77 }
78 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
79 si->rsvd_segs = reserved_segments(sbi);
80 si->overp_segs = overprovision_segments(sbi);
81 si->valid_count = valid_user_blocks(sbi);
82 si->discard_blks = discard_blocks(sbi);
83 si->valid_node_count = valid_node_count(sbi);
84 si->valid_inode_count = valid_inode_count(sbi);
85 si->inline_xattr = atomic_read(&sbi->inline_xattr);
86 si->inline_inode = atomic_read(&sbi->inline_inode);
87 si->inline_dir = atomic_read(&sbi->inline_dir);
88 si->append = sbi->im[APPEND_INO].ino_num;
89 si->update = sbi->im[UPDATE_INO].ino_num;
90 si->orphans = sbi->im[ORPHAN_INO].ino_num;
91 si->utilization = utilization(sbi);
92
93 si->free_segs = free_segments(sbi);
94 si->free_secs = free_sections(sbi);
95 si->prefree_count = prefree_segments(sbi);
96 si->dirty_count = dirty_segments(sbi);
97 si->node_pages = NODE_MAPPING(sbi)->nrpages;
98 si->meta_pages = META_MAPPING(sbi)->nrpages;
99 si->nats = NM_I(sbi)->nat_cnt;
100 si->dirty_nats = NM_I(sbi)->dirty_nat_cnt;
101 si->sits = MAIN_SEGS(sbi);
102 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
103 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
104 si->avail_nids = NM_I(sbi)->available_nids;
105 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
106 si->bg_gc = sbi->bg_gc;
107 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
108 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
109 / 2;
110 si->util_valid = (int)(written_block_count(sbi) >>
111 sbi->log_blocks_per_seg)
112 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
113 / 2;
114 si->util_invalid = 50 - si->util_free - si->util_valid;
115 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) {
116 struct curseg_info *curseg = CURSEG_I(sbi, i);
117 si->curseg[i] = curseg->segno;
118 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
119 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
120 }
121
122 for (i = 0; i < 2; i++) {
123 si->segment_count[i] = sbi->segment_count[i];
124 si->block_count[i] = sbi->block_count[i];
125 }
126
127 si->inplace_count = atomic_read(&sbi->inplace_count);
128}
129
130/*
131 * This function calculates BDF of every segments
132 */
133static void update_sit_info(struct f2fs_sb_info *sbi)
134{
135 struct f2fs_stat_info *si = F2FS_STAT(sbi);
136 unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
137 unsigned long long bimodal, dist;
138 unsigned int segno, vblocks;
139 int ndirty = 0;
140
141 bimodal = 0;
142 total_vblocks = 0;
143 blks_per_sec = BLKS_PER_SEC(sbi);
144 hblks_per_sec = blks_per_sec / 2;
145 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
146 vblocks = get_valid_blocks(sbi, segno, true);
147 dist = abs(vblocks - hblks_per_sec);
148 bimodal += dist * dist;
149
150 if (vblocks > 0 && vblocks < blks_per_sec) {
151 total_vblocks += vblocks;
152 ndirty++;
153 }
154 }
155 dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
156 si->bimodal = div64_u64(bimodal, dist);
157 if (si->dirty_count)
158 si->avg_vblocks = div_u64(total_vblocks, ndirty);
159 else
160 si->avg_vblocks = 0;
161}
162
163/*
164 * This function calculates memory footprint.
165 */
166static void update_mem_info(struct f2fs_sb_info *sbi)
167{
168 struct f2fs_stat_info *si = F2FS_STAT(sbi);
169 unsigned npages;
170 int i;
171
172 if (si->base_mem)
173 goto get_cache;
174
175 /* build stat */
176 si->base_mem = sizeof(struct f2fs_stat_info);
177
178 /* build superblock */
179 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
180 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
181 si->base_mem += sizeof(*sbi->ckpt);
182
183 /* build sm */
184 si->base_mem += sizeof(struct f2fs_sm_info);
185
186 /* build sit */
187 si->base_mem += sizeof(struct sit_info);
188 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
189 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
190 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
191 if (f2fs_discard_en(sbi))
192 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
193 si->base_mem += SIT_VBLOCK_MAP_SIZE;
194 if (sbi->segs_per_sec > 1)
195 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
196 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
197
198 /* build free segmap */
199 si->base_mem += sizeof(struct free_segmap_info);
200 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
201 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
202
203 /* build curseg */
204 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
205 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
206
207 /* build dirty segmap */
208 si->base_mem += sizeof(struct dirty_seglist_info);
209 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
210 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
211
212 /* build nm */
213 si->base_mem += sizeof(struct f2fs_nm_info);
214 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
215 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
216 si->base_mem += NM_I(sbi)->nat_blocks * NAT_ENTRY_BITMAP_SIZE;
217 si->base_mem += NM_I(sbi)->nat_blocks / 8;
218 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
219
220get_cache:
221 si->cache_mem = 0;
222
223 /* build gc */
224 if (sbi->gc_thread)
225 si->cache_mem += sizeof(struct f2fs_gc_kthread);
226
227 /* build merge flush thread */
228 if (SM_I(sbi)->fcc_info)
229 si->cache_mem += sizeof(struct flush_cmd_control);
230 if (SM_I(sbi)->dcc_info) {
231 si->cache_mem += sizeof(struct discard_cmd_control);
232 si->cache_mem += sizeof(struct discard_cmd) *
233 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
234 }
235
236 /* free nids */
237 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
238 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
239 sizeof(struct free_nid);
240 si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry);
241 si->cache_mem += NM_I(sbi)->dirty_nat_cnt *
242 sizeof(struct nat_entry_set);
243 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
244 for (i = 0; i < MAX_INO_ENTRY; i++)
245 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
246 si->cache_mem += atomic_read(&sbi->total_ext_tree) *
247 sizeof(struct extent_tree);
248 si->cache_mem += atomic_read(&sbi->total_ext_node) *
249 sizeof(struct extent_node);
250
251 si->page_mem = 0;
252 npages = NODE_MAPPING(sbi)->nrpages;
253 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
254 npages = META_MAPPING(sbi)->nrpages;
255 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
256}
257
258static int stat_show(struct seq_file *s, void *v)
259{
260 struct f2fs_stat_info *si;
261 int i = 0;
262 int j;
263
264 mutex_lock(&f2fs_stat_mutex);
265 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
266 update_general_status(si->sbi);
267
268 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
269 si->sbi->sb->s_bdev, i++,
270 f2fs_readonly(si->sbi->sb) ? "RO": "RW",
271 f2fs_cp_error(si->sbi) ? "Error": "Good");
272 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
273 si->sit_area_segs, si->nat_area_segs);
274 seq_printf(s, "[SSA: %d] [MAIN: %d",
275 si->ssa_area_segs, si->main_area_segs);
276 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
277 si->overp_segs, si->rsvd_segs);
278 if (test_opt(si->sbi, DISCARD))
279 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
280 si->utilization, si->valid_count, si->discard_blks);
281 else
282 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
283 si->utilization, si->valid_count);
284
285 seq_printf(s, " - Node: %u (Inode: %u, ",
286 si->valid_node_count, si->valid_inode_count);
287 seq_printf(s, "Other: %u)\n - Data: %u\n",
288 si->valid_node_count - si->valid_inode_count,
289 si->valid_count - si->valid_node_count);
290 seq_printf(s, " - Inline_xattr Inode: %u\n",
291 si->inline_xattr);
292 seq_printf(s, " - Inline_data Inode: %u\n",
293 si->inline_inode);
294 seq_printf(s, " - Inline_dentry Inode: %u\n",
295 si->inline_dir);
296 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
297 si->orphans, si->append, si->update);
298 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
299 si->main_area_segs, si->main_area_sections,
300 si->main_area_zones);
301 seq_printf(s, " - COLD data: %d, %d, %d\n",
302 si->curseg[CURSEG_COLD_DATA],
303 si->cursec[CURSEG_COLD_DATA],
304 si->curzone[CURSEG_COLD_DATA]);
305 seq_printf(s, " - WARM data: %d, %d, %d\n",
306 si->curseg[CURSEG_WARM_DATA],
307 si->cursec[CURSEG_WARM_DATA],
308 si->curzone[CURSEG_WARM_DATA]);
309 seq_printf(s, " - HOT data: %d, %d, %d\n",
310 si->curseg[CURSEG_HOT_DATA],
311 si->cursec[CURSEG_HOT_DATA],
312 si->curzone[CURSEG_HOT_DATA]);
313 seq_printf(s, " - Dir dnode: %d, %d, %d\n",
314 si->curseg[CURSEG_HOT_NODE],
315 si->cursec[CURSEG_HOT_NODE],
316 si->curzone[CURSEG_HOT_NODE]);
317 seq_printf(s, " - File dnode: %d, %d, %d\n",
318 si->curseg[CURSEG_WARM_NODE],
319 si->cursec[CURSEG_WARM_NODE],
320 si->curzone[CURSEG_WARM_NODE]);
321 seq_printf(s, " - Indir nodes: %d, %d, %d\n",
322 si->curseg[CURSEG_COLD_NODE],
323 si->cursec[CURSEG_COLD_NODE],
324 si->curzone[CURSEG_COLD_NODE]);
325 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
326 si->main_area_segs - si->dirty_count -
327 si->prefree_count - si->free_segs,
328 si->dirty_count);
329 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
330 si->prefree_count, si->free_segs, si->free_secs);
331 seq_printf(s, "CP calls: %d (BG: %d)\n",
332 si->cp_count, si->bg_cp_count);
333 seq_printf(s, "GC calls: %d (BG: %d)\n",
334 si->call_count, si->bg_gc);
335 seq_printf(s, " - data segments : %d (%d)\n",
336 si->data_segs, si->bg_data_segs);
337 seq_printf(s, " - node segments : %d (%d)\n",
338 si->node_segs, si->bg_node_segs);
339 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
340 si->bg_data_blks + si->bg_node_blks);
341 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
342 si->bg_data_blks);
343 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
344 si->bg_node_blks);
345 seq_puts(s, "\nExtent Cache:\n");
346 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
347 si->hit_largest, si->hit_cached,
348 si->hit_rbtree);
349 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
350 !si->total_ext ? 0 :
351 div64_u64(si->hit_total * 100, si->total_ext),
352 si->hit_total, si->total_ext);
353 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
354 si->ext_tree, si->zombie_tree, si->ext_node);
355 seq_puts(s, "\nBalancing F2FS Async:\n");
356 seq_printf(s, " - IO (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
357 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
358 si->nr_wb_cp_data, si->nr_wb_data,
359 si->nr_flushing, si->nr_flushed,
360 si->flush_list_empty,
361 si->nr_discarding, si->nr_discarded,
362 si->nr_discard_cmd, si->undiscard_blks);
363 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), "
364 "volatile IO: %4d (Max. %4d)\n",
365 si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
366 si->vw_cnt, si->max_vw_cnt);
367 seq_printf(s, " - nodes: %4d in %4d\n",
368 si->ndirty_node, si->node_pages);
369 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
370 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
371 seq_printf(s, " - datas: %4d in files:%4d\n",
372 si->ndirty_data, si->ndirty_files);
373 seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
374 si->ndirty_qdata, si->nquota_files);
375 seq_printf(s, " - meta: %4d in %4d\n",
376 si->ndirty_meta, si->meta_pages);
377 seq_printf(s, " - imeta: %4d\n",
378 si->ndirty_imeta);
379 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
380 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
381 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
382 si->free_nids, si->avail_nids, si->alloc_nids);
383 seq_puts(s, "\nDistribution of User Blocks:");
384 seq_puts(s, " [ valid | invalid | free ]\n");
385 seq_puts(s, " [");
386
387 for (j = 0; j < si->util_valid; j++)
388 seq_putc(s, '-');
389 seq_putc(s, '|');
390
391 for (j = 0; j < si->util_invalid; j++)
392 seq_putc(s, '-');
393 seq_putc(s, '|');
394
395 for (j = 0; j < si->util_free; j++)
396 seq_putc(s, '-');
397 seq_puts(s, "]\n\n");
398 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
399 seq_printf(s, "SSR: %u blocks in %u segments\n",
400 si->block_count[SSR], si->segment_count[SSR]);
401 seq_printf(s, "LFS: %u blocks in %u segments\n",
402 si->block_count[LFS], si->segment_count[LFS]);
403
404 /* segment usage info */
405 update_sit_info(si->sbi);
406 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
407 si->bimodal, si->avg_vblocks);
408
409 /* memory footprint */
410 update_mem_info(si->sbi);
411 seq_printf(s, "\nMemory: %llu KB\n",
412 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
413 seq_printf(s, " - static: %llu KB\n",
414 si->base_mem >> 10);
415 seq_printf(s, " - cached: %llu KB\n",
416 si->cache_mem >> 10);
417 seq_printf(s, " - paged : %llu KB\n",
418 si->page_mem >> 10);
419 }
420 mutex_unlock(&f2fs_stat_mutex);
421 return 0;
422}
423
424static int stat_open(struct inode *inode, struct file *file)
425{
426 return single_open(file, stat_show, inode->i_private);
427}
428
429static const struct file_operations stat_fops = {
430 .owner = THIS_MODULE,
431 .open = stat_open,
432 .read = seq_read,
433 .llseek = seq_lseek,
434 .release = single_release,
435};
436
437int f2fs_build_stats(struct f2fs_sb_info *sbi)
438{
439 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
440 struct f2fs_stat_info *si;
441
442 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
443 if (!si)
444 return -ENOMEM;
445
446 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
447 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
448 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
449 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
450 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
451 si->main_area_sections = le32_to_cpu(raw_super->section_count);
452 si->main_area_zones = si->main_area_sections /
453 le32_to_cpu(raw_super->secs_per_zone);
454 si->sbi = sbi;
455 sbi->stat_info = si;
456
457 atomic64_set(&sbi->total_hit_ext, 0);
458 atomic64_set(&sbi->read_hit_rbtree, 0);
459 atomic64_set(&sbi->read_hit_largest, 0);
460 atomic64_set(&sbi->read_hit_cached, 0);
461
462 atomic_set(&sbi->inline_xattr, 0);
463 atomic_set(&sbi->inline_inode, 0);
464 atomic_set(&sbi->inline_dir, 0);
465 atomic_set(&sbi->inplace_count, 0);
466
467 atomic_set(&sbi->aw_cnt, 0);
468 atomic_set(&sbi->vw_cnt, 0);
469 atomic_set(&sbi->max_aw_cnt, 0);
470 atomic_set(&sbi->max_vw_cnt, 0);
471
472 mutex_lock(&f2fs_stat_mutex);
473 list_add_tail(&si->stat_list, &f2fs_stat_list);
474 mutex_unlock(&f2fs_stat_mutex);
475
476 return 0;
477}
478
479void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
480{
481 struct f2fs_stat_info *si = F2FS_STAT(sbi);
482
483 mutex_lock(&f2fs_stat_mutex);
484 list_del(&si->stat_list);
485 mutex_unlock(&f2fs_stat_mutex);
486
487 kfree(si);
488}
489
490int __init f2fs_create_root_stats(void)
491{
492 struct dentry *file;
493
494 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
495 if (!f2fs_debugfs_root)
496 return -ENOMEM;
497
498 file = debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root,
499 NULL, &stat_fops);
500 if (!file) {
501 debugfs_remove(f2fs_debugfs_root);
502 f2fs_debugfs_root = NULL;
503 return -ENOMEM;
504 }
505
506 return 0;
507}
508
509void f2fs_destroy_root_stats(void)
510{
511 if (!f2fs_debugfs_root)
512 return;
513
514 debugfs_remove_recursive(f2fs_debugfs_root);
515 f2fs_debugfs_root = NULL;
516}
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 += 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 /* general extent cache stats */
76 for (i = 0; i < NR_EXTENT_CACHES; i++) {
77 struct extent_tree_info *eti = &sbi->extent_tree[i];
78
79 si->hit_cached[i] = atomic64_read(&sbi->read_hit_cached[i]);
80 si->hit_rbtree[i] = atomic64_read(&sbi->read_hit_rbtree[i]);
81 si->total_ext[i] = atomic64_read(&sbi->total_hit_ext[i]);
82 si->hit_total[i] = si->hit_cached[i] + si->hit_rbtree[i];
83 si->ext_tree[i] = atomic_read(&eti->total_ext_tree);
84 si->zombie_tree[i] = atomic_read(&eti->total_zombie_tree);
85 si->ext_node[i] = atomic_read(&eti->total_ext_node);
86 }
87 /* read extent_cache only */
88 si->hit_largest = atomic64_read(&sbi->read_hit_largest);
89 si->hit_total[EX_READ] += si->hit_largest;
90
91 /* block age extent_cache only */
92 si->allocated_data_blocks = atomic64_read(&sbi->allocated_data_blocks);
93
94 /* validation check of the segment numbers */
95 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
96 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
97 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
98 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
99 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
100 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
101 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
102 si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
103 si->nquota_files = sbi->nquota_files;
104 si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
105 si->aw_cnt = atomic_read(&sbi->atomic_files);
106 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
107 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
108 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
109 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
110 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
111 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
112 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
113 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
114 if (SM_I(sbi)->fcc_info) {
115 si->nr_flushed =
116 atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
117 si->nr_flushing =
118 atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
119 si->flush_list_empty =
120 llist_empty(&SM_I(sbi)->fcc_info->issue_list);
121 }
122 if (SM_I(sbi)->dcc_info) {
123 si->nr_discarded =
124 atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
125 si->nr_discarding =
126 atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
127 si->nr_discard_cmd =
128 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
129 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
130 }
131 si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt);
132 si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt);
133 si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt);
134 spin_lock(&sbi->cprc_info.stat_lock);
135 si->cur_ckpt_time = sbi->cprc_info.cur_time;
136 si->peak_ckpt_time = sbi->cprc_info.peak_time;
137 spin_unlock(&sbi->cprc_info.stat_lock);
138 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
139 si->rsvd_segs = reserved_segments(sbi);
140 si->overp_segs = overprovision_segments(sbi);
141 si->valid_count = valid_user_blocks(sbi);
142 si->discard_blks = discard_blocks(sbi);
143 si->valid_node_count = valid_node_count(sbi);
144 si->valid_inode_count = valid_inode_count(sbi);
145 si->inline_xattr = atomic_read(&sbi->inline_xattr);
146 si->inline_inode = atomic_read(&sbi->inline_inode);
147 si->inline_dir = atomic_read(&sbi->inline_dir);
148 si->compr_inode = atomic_read(&sbi->compr_inode);
149 si->swapfile_inode = atomic_read(&sbi->swapfile_inode);
150 si->compr_blocks = atomic64_read(&sbi->compr_blocks);
151 si->append = sbi->im[APPEND_INO].ino_num;
152 si->update = sbi->im[UPDATE_INO].ino_num;
153 si->orphans = sbi->im[ORPHAN_INO].ino_num;
154 si->utilization = utilization(sbi);
155
156 si->free_segs = free_segments(sbi);
157 si->free_secs = free_sections(sbi);
158 si->prefree_count = prefree_segments(sbi);
159 si->dirty_count = dirty_segments(sbi);
160 if (sbi->node_inode)
161 si->node_pages = NODE_MAPPING(sbi)->nrpages;
162 if (sbi->meta_inode)
163 si->meta_pages = META_MAPPING(sbi)->nrpages;
164#ifdef CONFIG_F2FS_FS_COMPRESSION
165 if (sbi->compress_inode) {
166 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages;
167 si->compress_page_hit = atomic_read(&sbi->compress_page_hit);
168 }
169#endif
170 si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
171 si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
172 si->sits = MAIN_SEGS(sbi);
173 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
174 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
175 si->avail_nids = NM_I(sbi)->available_nids;
176 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
177 si->io_skip_bggc = sbi->io_skip_bggc;
178 si->other_skip_bggc = sbi->other_skip_bggc;
179 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
180 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
181 / 2;
182 si->util_valid = (int)(written_block_count(sbi) >>
183 sbi->log_blocks_per_seg)
184 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
185 / 2;
186 si->util_invalid = 50 - si->util_free - si->util_valid;
187 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
188 struct curseg_info *curseg = CURSEG_I(sbi, i);
189
190 si->curseg[i] = curseg->segno;
191 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
192 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
193 }
194
195 for (i = META_CP; i < META_MAX; i++)
196 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
197
198 for (i = 0; i < NO_CHECK_TYPE; i++) {
199 si->dirty_seg[i] = 0;
200 si->full_seg[i] = 0;
201 si->valid_blks[i] = 0;
202 }
203
204 for (i = 0; i < MAIN_SEGS(sbi); i++) {
205 int blks = get_seg_entry(sbi, i)->valid_blocks;
206 int type = get_seg_entry(sbi, i)->type;
207
208 if (!blks)
209 continue;
210
211 if (blks == sbi->blocks_per_seg)
212 si->full_seg[type]++;
213 else
214 si->dirty_seg[type]++;
215 si->valid_blks[type] += blks;
216 }
217
218 for (i = 0; i < MAX_CALL_TYPE; i++)
219 si->cp_call_count[i] = atomic_read(&sbi->cp_call_count[i]);
220
221 for (i = 0; i < 2; i++) {
222 si->segment_count[i] = sbi->segment_count[i];
223 si->block_count[i] = sbi->block_count[i];
224 }
225
226 si->inplace_count = atomic_read(&sbi->inplace_count);
227}
228
229/*
230 * This function calculates memory footprint.
231 */
232static void update_mem_info(struct f2fs_sb_info *sbi)
233{
234 struct f2fs_stat_info *si = F2FS_STAT(sbi);
235 int i;
236
237 if (si->base_mem)
238 goto get_cache;
239
240 /* build stat */
241 si->base_mem = sizeof(struct f2fs_stat_info);
242
243 /* build superblock */
244 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
245 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
246 si->base_mem += sizeof(*sbi->ckpt);
247
248 /* build sm */
249 si->base_mem += sizeof(struct f2fs_sm_info);
250
251 /* build sit */
252 si->base_mem += sizeof(struct sit_info);
253 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
254 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
255 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
256 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
257 si->base_mem += SIT_VBLOCK_MAP_SIZE;
258 if (__is_large_section(sbi))
259 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
260 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
261
262 /* build free segmap */
263 si->base_mem += sizeof(struct free_segmap_info);
264 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
265 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
266
267 /* build curseg */
268 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
269 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
270
271 /* build dirty segmap */
272 si->base_mem += sizeof(struct dirty_seglist_info);
273 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
274 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
275
276 /* build nm */
277 si->base_mem += sizeof(struct f2fs_nm_info);
278 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
279 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
280 si->base_mem += NM_I(sbi)->nat_blocks *
281 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
282 si->base_mem += NM_I(sbi)->nat_blocks / 8;
283 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
284
285get_cache:
286 si->cache_mem = 0;
287
288 /* build gc */
289 if (sbi->gc_thread)
290 si->cache_mem += sizeof(struct f2fs_gc_kthread);
291
292 /* build merge flush thread */
293 if (SM_I(sbi)->fcc_info)
294 si->cache_mem += sizeof(struct flush_cmd_control);
295 if (SM_I(sbi)->dcc_info) {
296 si->cache_mem += sizeof(struct discard_cmd_control);
297 si->cache_mem += sizeof(struct discard_cmd) *
298 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
299 }
300
301 /* free nids */
302 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
303 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
304 sizeof(struct free_nid);
305 si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
306 sizeof(struct nat_entry);
307 si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
308 sizeof(struct nat_entry_set);
309 for (i = 0; i < MAX_INO_ENTRY; i++)
310 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
311
312 for (i = 0; i < NR_EXTENT_CACHES; i++) {
313 struct extent_tree_info *eti = &sbi->extent_tree[i];
314
315 si->ext_mem[i] = atomic_read(&eti->total_ext_tree) *
316 sizeof(struct extent_tree);
317 si->ext_mem[i] += atomic_read(&eti->total_ext_node) *
318 sizeof(struct extent_node);
319 si->cache_mem += si->ext_mem[i];
320 }
321
322 si->page_mem = 0;
323 if (sbi->node_inode) {
324 unsigned long npages = NODE_MAPPING(sbi)->nrpages;
325
326 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
327 }
328 if (sbi->meta_inode) {
329 unsigned long npages = META_MAPPING(sbi)->nrpages;
330
331 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
332 }
333#ifdef CONFIG_F2FS_FS_COMPRESSION
334 if (sbi->compress_inode) {
335 unsigned long npages = COMPRESS_MAPPING(sbi)->nrpages;
336
337 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
338 }
339#endif
340}
341
342static const char *s_flag[MAX_SBI_FLAG] = {
343 [SBI_IS_DIRTY] = "fs_dirty",
344 [SBI_IS_CLOSE] = "closing",
345 [SBI_NEED_FSCK] = "need_fsck",
346 [SBI_POR_DOING] = "recovering",
347 [SBI_NEED_SB_WRITE] = "sb_dirty",
348 [SBI_NEED_CP] = "need_cp",
349 [SBI_IS_SHUTDOWN] = "shutdown",
350 [SBI_IS_RECOVERED] = "recovered",
351 [SBI_CP_DISABLED] = "cp_disabled",
352 [SBI_CP_DISABLED_QUICK] = "cp_disabled_quick",
353 [SBI_QUOTA_NEED_FLUSH] = "quota_need_flush",
354 [SBI_QUOTA_SKIP_FLUSH] = "quota_skip_flush",
355 [SBI_QUOTA_NEED_REPAIR] = "quota_need_repair",
356 [SBI_IS_RESIZEFS] = "resizefs",
357 [SBI_IS_FREEZING] = "freezefs",
358 [SBI_IS_WRITABLE] = "writable",
359};
360
361static const char *ipu_mode_names[F2FS_IPU_MAX] = {
362 [F2FS_IPU_FORCE] = "FORCE",
363 [F2FS_IPU_SSR] = "SSR",
364 [F2FS_IPU_UTIL] = "UTIL",
365 [F2FS_IPU_SSR_UTIL] = "SSR_UTIL",
366 [F2FS_IPU_FSYNC] = "FSYNC",
367 [F2FS_IPU_ASYNC] = "ASYNC",
368 [F2FS_IPU_NOCACHE] = "NOCACHE",
369 [F2FS_IPU_HONOR_OPU_WRITE] = "HONOR_OPU_WRITE",
370};
371
372static int stat_show(struct seq_file *s, void *v)
373{
374 struct f2fs_stat_info *si;
375 int i = 0, j = 0;
376 unsigned long flags;
377
378 raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
379 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
380 struct f2fs_sb_info *sbi = si->sbi;
381
382 update_general_status(sbi);
383
384 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
385 sbi->sb->s_bdev, i++,
386 f2fs_readonly(sbi->sb) ? "RO" : "RW",
387 is_set_ckpt_flags(sbi, CP_DISABLED_FLAG) ?
388 "Disabled" : (f2fs_cp_error(sbi) ? "Error" : "Good"));
389 if (sbi->s_flag) {
390 seq_puts(s, "[SBI:");
391 for_each_set_bit(j, &sbi->s_flag, MAX_SBI_FLAG)
392 seq_printf(s, " %s", s_flag[j]);
393 seq_puts(s, "]\n");
394 }
395 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
396 si->sit_area_segs, si->nat_area_segs);
397 seq_printf(s, "[SSA: %d] [MAIN: %d",
398 si->ssa_area_segs, si->main_area_segs);
399 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
400 si->overp_segs, si->rsvd_segs);
401 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",
402 ktime_get_boottime_seconds(),
403 SIT_I(sbi)->mounted_time);
404
405 seq_puts(s, "Policy:\n");
406 seq_puts(s, " - IPU: [");
407 if (IS_F2FS_IPU_DISABLE(sbi)) {
408 seq_puts(s, " DISABLE");
409 } else {
410 unsigned long policy = SM_I(sbi)->ipu_policy;
411
412 for_each_set_bit(j, &policy, F2FS_IPU_MAX)
413 seq_printf(s, " %s", ipu_mode_names[j]);
414 }
415 seq_puts(s, " ]\n\n");
416
417 if (test_opt(sbi, DISCARD))
418 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
419 si->utilization, si->valid_count, si->discard_blks);
420 else
421 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
422 si->utilization, si->valid_count);
423
424 seq_printf(s, " - Node: %u (Inode: %u, ",
425 si->valid_node_count, si->valid_inode_count);
426 seq_printf(s, "Other: %u)\n - Data: %u\n",
427 si->valid_node_count - si->valid_inode_count,
428 si->valid_count - si->valid_node_count);
429 seq_printf(s, " - Inline_xattr Inode: %u\n",
430 si->inline_xattr);
431 seq_printf(s, " - Inline_data Inode: %u\n",
432 si->inline_inode);
433 seq_printf(s, " - Inline_dentry Inode: %u\n",
434 si->inline_dir);
435 seq_printf(s, " - Compressed Inode: %u, Blocks: %llu\n",
436 si->compr_inode, si->compr_blocks);
437 seq_printf(s, " - Swapfile Inode: %u\n",
438 si->swapfile_inode);
439 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
440 si->orphans, si->append, si->update);
441 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
442 si->main_area_segs, si->main_area_sections,
443 si->main_area_zones);
444 seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n",
445 "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
446 seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n",
447 si->curseg[CURSEG_COLD_DATA],
448 si->cursec[CURSEG_COLD_DATA],
449 si->curzone[CURSEG_COLD_DATA],
450 si->dirty_seg[CURSEG_COLD_DATA],
451 si->full_seg[CURSEG_COLD_DATA],
452 si->valid_blks[CURSEG_COLD_DATA]);
453 seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n",
454 si->curseg[CURSEG_WARM_DATA],
455 si->cursec[CURSEG_WARM_DATA],
456 si->curzone[CURSEG_WARM_DATA],
457 si->dirty_seg[CURSEG_WARM_DATA],
458 si->full_seg[CURSEG_WARM_DATA],
459 si->valid_blks[CURSEG_WARM_DATA]);
460 seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n",
461 si->curseg[CURSEG_HOT_DATA],
462 si->cursec[CURSEG_HOT_DATA],
463 si->curzone[CURSEG_HOT_DATA],
464 si->dirty_seg[CURSEG_HOT_DATA],
465 si->full_seg[CURSEG_HOT_DATA],
466 si->valid_blks[CURSEG_HOT_DATA]);
467 seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n",
468 si->curseg[CURSEG_HOT_NODE],
469 si->cursec[CURSEG_HOT_NODE],
470 si->curzone[CURSEG_HOT_NODE],
471 si->dirty_seg[CURSEG_HOT_NODE],
472 si->full_seg[CURSEG_HOT_NODE],
473 si->valid_blks[CURSEG_HOT_NODE]);
474 seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n",
475 si->curseg[CURSEG_WARM_NODE],
476 si->cursec[CURSEG_WARM_NODE],
477 si->curzone[CURSEG_WARM_NODE],
478 si->dirty_seg[CURSEG_WARM_NODE],
479 si->full_seg[CURSEG_WARM_NODE],
480 si->valid_blks[CURSEG_WARM_NODE]);
481 seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
482 si->curseg[CURSEG_COLD_NODE],
483 si->cursec[CURSEG_COLD_NODE],
484 si->curzone[CURSEG_COLD_NODE],
485 si->dirty_seg[CURSEG_COLD_NODE],
486 si->full_seg[CURSEG_COLD_NODE],
487 si->valid_blks[CURSEG_COLD_NODE]);
488 seq_printf(s, " - Pinned file: %8d %8d %8d\n",
489 si->curseg[CURSEG_COLD_DATA_PINNED],
490 si->cursec[CURSEG_COLD_DATA_PINNED],
491 si->curzone[CURSEG_COLD_DATA_PINNED]);
492 seq_printf(s, " - ATGC data: %8d %8d %8d\n",
493 si->curseg[CURSEG_ALL_DATA_ATGC],
494 si->cursec[CURSEG_ALL_DATA_ATGC],
495 si->curzone[CURSEG_ALL_DATA_ATGC]);
496 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
497 si->main_area_segs - si->dirty_count -
498 si->prefree_count - si->free_segs,
499 si->dirty_count);
500 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
501 si->prefree_count, si->free_segs, si->free_secs);
502 seq_printf(s, "CP calls: %d (BG: %d)\n",
503 si->cp_call_count[TOTAL_CALL],
504 si->cp_call_count[BACKGROUND]);
505 seq_printf(s, "CP count: %d\n", si->cp_count);
506 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
507 seq_printf(s, " - sit blocks : %u\n",
508 si->meta_count[META_SIT]);
509 seq_printf(s, " - nat blocks : %u\n",
510 si->meta_count[META_NAT]);
511 seq_printf(s, " - ssa blocks : %u\n",
512 si->meta_count[META_SSA]);
513 seq_puts(s, "CP merge:\n");
514 seq_printf(s, " - Queued : %4d\n", si->nr_queued_ckpt);
515 seq_printf(s, " - Issued : %4d\n", si->nr_issued_ckpt);
516 seq_printf(s, " - Total : %4d\n", si->nr_total_ckpt);
517 seq_printf(s, " - Cur time : %4d(ms)\n", si->cur_ckpt_time);
518 seq_printf(s, " - Peak time : %4d(ms)\n", si->peak_ckpt_time);
519 seq_printf(s, "GC calls: %d (gc_thread: %d)\n",
520 si->gc_call_count[BACKGROUND] +
521 si->gc_call_count[FOREGROUND],
522 si->gc_call_count[BACKGROUND]);
523 if (__is_large_section(sbi)) {
524 seq_printf(s, " - data sections : %d (BG: %d)\n",
525 si->gc_secs[DATA][BG_GC] + si->gc_secs[DATA][FG_GC],
526 si->gc_secs[DATA][BG_GC]);
527 seq_printf(s, " - node sections : %d (BG: %d)\n",
528 si->gc_secs[NODE][BG_GC] + si->gc_secs[NODE][FG_GC],
529 si->gc_secs[NODE][BG_GC]);
530 }
531 seq_printf(s, " - data segments : %d (BG: %d)\n",
532 si->gc_segs[DATA][BG_GC] + si->gc_segs[DATA][FG_GC],
533 si->gc_segs[DATA][BG_GC]);
534 seq_printf(s, " - node segments : %d (BG: %d)\n",
535 si->gc_segs[NODE][BG_GC] + si->gc_segs[NODE][FG_GC],
536 si->gc_segs[NODE][BG_GC]);
537 seq_puts(s, " - Reclaimed segs :\n");
538 seq_printf(s, " - Normal : %d\n", sbi->gc_reclaimed_segs[GC_NORMAL]);
539 seq_printf(s, " - Idle CB : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_CB]);
540 seq_printf(s, " - Idle Greedy : %d\n",
541 sbi->gc_reclaimed_segs[GC_IDLE_GREEDY]);
542 seq_printf(s, " - Idle AT : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_AT]);
543 seq_printf(s, " - Urgent High : %d\n",
544 sbi->gc_reclaimed_segs[GC_URGENT_HIGH]);
545 seq_printf(s, " - Urgent Mid : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_MID]);
546 seq_printf(s, " - Urgent Low : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_LOW]);
547 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
548 si->bg_data_blks + si->bg_node_blks);
549 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
550 si->bg_data_blks);
551 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
552 si->bg_node_blks);
553 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
554 si->io_skip_bggc, si->other_skip_bggc);
555 seq_puts(s, "\nExtent Cache (Read):\n");
556 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
557 si->hit_largest, si->hit_cached[EX_READ],
558 si->hit_rbtree[EX_READ]);
559 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
560 !si->total_ext[EX_READ] ? 0 :
561 div64_u64(si->hit_total[EX_READ] * 100,
562 si->total_ext[EX_READ]),
563 si->hit_total[EX_READ], si->total_ext[EX_READ]);
564 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
565 si->ext_tree[EX_READ], si->zombie_tree[EX_READ],
566 si->ext_node[EX_READ]);
567 seq_puts(s, "\nExtent Cache (Block Age):\n");
568 seq_printf(s, " - Allocated Data Blocks: %llu\n",
569 si->allocated_data_blocks);
570 seq_printf(s, " - Hit Count: L1:%llu L2:%llu\n",
571 si->hit_cached[EX_BLOCK_AGE],
572 si->hit_rbtree[EX_BLOCK_AGE]);
573 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
574 !si->total_ext[EX_BLOCK_AGE] ? 0 :
575 div64_u64(si->hit_total[EX_BLOCK_AGE] * 100,
576 si->total_ext[EX_BLOCK_AGE]),
577 si->hit_total[EX_BLOCK_AGE],
578 si->total_ext[EX_BLOCK_AGE]);
579 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
580 si->ext_tree[EX_BLOCK_AGE],
581 si->zombie_tree[EX_BLOCK_AGE],
582 si->ext_node[EX_BLOCK_AGE]);
583 seq_puts(s, "\nBalancing F2FS Async:\n");
584 seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
585 si->nr_dio_read, si->nr_dio_write);
586 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
587 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
588 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), ",
589 si->nr_wb_cp_data, si->nr_wb_data,
590 si->nr_flushing, si->nr_flushed,
591 si->flush_list_empty);
592 seq_printf(s, "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
593 si->nr_discarding, si->nr_discarded,
594 si->nr_discard_cmd, si->undiscard_blks);
595 seq_printf(s, " - atomic IO: %4d (Max. %4d)\n",
596 si->aw_cnt, si->max_aw_cnt);
597 seq_printf(s, " - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit);
598 seq_printf(s, " - nodes: %4d in %4d\n",
599 si->ndirty_node, si->node_pages);
600 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
601 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
602 seq_printf(s, " - datas: %4d in files:%4d\n",
603 si->ndirty_data, si->ndirty_files);
604 seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
605 si->ndirty_qdata, si->nquota_files);
606 seq_printf(s, " - meta: %4d in %4d\n",
607 si->ndirty_meta, si->meta_pages);
608 seq_printf(s, " - imeta: %4d\n",
609 si->ndirty_imeta);
610 seq_printf(s, " - fsync mark: %4lld\n",
611 percpu_counter_sum_positive(
612 &sbi->rf_node_block_count));
613 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
614 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
615 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
616 si->free_nids, si->avail_nids, si->alloc_nids);
617 seq_puts(s, "\nDistribution of User Blocks:");
618 seq_puts(s, " [ valid | invalid | free ]\n");
619 seq_puts(s, " [");
620
621 for (j = 0; j < si->util_valid; j++)
622 seq_putc(s, '-');
623 seq_putc(s, '|');
624
625 for (j = 0; j < si->util_invalid; j++)
626 seq_putc(s, '-');
627 seq_putc(s, '|');
628
629 for (j = 0; j < si->util_free; j++)
630 seq_putc(s, '-');
631 seq_puts(s, "]\n\n");
632 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
633 seq_printf(s, "SSR: %u blocks in %u segments\n",
634 si->block_count[SSR], si->segment_count[SSR]);
635 seq_printf(s, "LFS: %u blocks in %u segments\n",
636 si->block_count[LFS], si->segment_count[LFS]);
637
638 /* segment usage info */
639 f2fs_update_sit_info(sbi);
640 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
641 si->bimodal, si->avg_vblocks);
642
643 /* memory footprint */
644 update_mem_info(sbi);
645 seq_printf(s, "\nMemory: %llu KB\n",
646 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
647 seq_printf(s, " - static: %llu KB\n",
648 si->base_mem >> 10);
649 seq_printf(s, " - cached all: %llu KB\n",
650 si->cache_mem >> 10);
651 seq_printf(s, " - read extent cache: %llu KB\n",
652 si->ext_mem[EX_READ] >> 10);
653 seq_printf(s, " - block age extent cache: %llu KB\n",
654 si->ext_mem[EX_BLOCK_AGE] >> 10);
655 seq_printf(s, " - paged : %llu KB\n",
656 si->page_mem >> 10);
657 }
658 raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
659 return 0;
660}
661
662DEFINE_SHOW_ATTRIBUTE(stat);
663#endif
664
665int f2fs_build_stats(struct f2fs_sb_info *sbi)
666{
667 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
668 struct f2fs_stat_info *si;
669 unsigned long flags;
670 int i;
671
672 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
673 if (!si)
674 return -ENOMEM;
675
676 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
677 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
678 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
679 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
680 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
681 si->main_area_sections = le32_to_cpu(raw_super->section_count);
682 si->main_area_zones = si->main_area_sections /
683 le32_to_cpu(raw_super->secs_per_zone);
684 si->sbi = sbi;
685 sbi->stat_info = si;
686
687 /* general extent cache stats */
688 for (i = 0; i < NR_EXTENT_CACHES; i++) {
689 atomic64_set(&sbi->total_hit_ext[i], 0);
690 atomic64_set(&sbi->read_hit_rbtree[i], 0);
691 atomic64_set(&sbi->read_hit_cached[i], 0);
692 }
693
694 /* read extent_cache only */
695 atomic64_set(&sbi->read_hit_largest, 0);
696
697 atomic_set(&sbi->inline_xattr, 0);
698 atomic_set(&sbi->inline_inode, 0);
699 atomic_set(&sbi->inline_dir, 0);
700 atomic_set(&sbi->compr_inode, 0);
701 atomic64_set(&sbi->compr_blocks, 0);
702 atomic_set(&sbi->swapfile_inode, 0);
703 atomic_set(&sbi->atomic_files, 0);
704 atomic_set(&sbi->inplace_count, 0);
705 for (i = META_CP; i < META_MAX; i++)
706 atomic_set(&sbi->meta_count[i], 0);
707 for (i = 0; i < MAX_CALL_TYPE; i++)
708 atomic_set(&sbi->cp_call_count[i], 0);
709
710 atomic_set(&sbi->max_aw_cnt, 0);
711
712 raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
713 list_add_tail(&si->stat_list, &f2fs_stat_list);
714 raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
715
716 return 0;
717}
718
719void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
720{
721 struct f2fs_stat_info *si = F2FS_STAT(sbi);
722 unsigned long flags;
723
724 raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
725 list_del(&si->stat_list);
726 raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
727
728 kfree(si);
729}
730
731void __init f2fs_create_root_stats(void)
732{
733#ifdef CONFIG_DEBUG_FS
734 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
735
736 debugfs_create_file("status", 0444, f2fs_debugfs_root, NULL,
737 &stat_fops);
738#endif
739}
740
741void f2fs_destroy_root_stats(void)
742{
743#ifdef CONFIG_DEBUG_FS
744 debugfs_remove_recursive(f2fs_debugfs_root);
745 f2fs_debugfs_root = NULL;
746#endif
747}