1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * f2fs debugging statistics
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 * Copyright (c) 2012 Linux Foundation
8 * Copyright (c) 2012 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 */
10
11 #include <linux/fs.h>
12 #include <linux/backing-dev.h>
13 #include <linux/f2fs_fs.h>
14 #include <linux/blkdev.h>
15 #include <linux/debugfs.h>
16 #include <linux/seq_file.h>
17
18 #include "f2fs.h"
19 #include "node.h"
20 #include "segment.h"
21 #include "gc.h"
22
23 static LIST_HEAD(f2fs_stat_list);
24 static DEFINE_SPINLOCK(f2fs_stat_lock);
25 #ifdef CONFIG_DEBUG_FS
26 static struct dentry *f2fs_debugfs_root;
27 #endif
28
29 /*
30 * This function calculates BDF of every segments
31 */
f2fs_update_sit_info(struct f2fs_sb_info * sbi)32 void f2fs_update_sit_info(struct f2fs_sb_info *sbi)
33 {
34 struct f2fs_stat_info *si = F2FS_STAT(sbi);
35 unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
36 unsigned long long bimodal, dist;
37 unsigned int segno, vblocks;
38 int ndirty = 0;
39
40 bimodal = 0;
41 total_vblocks = 0;
42 blks_per_sec = CAP_BLKS_PER_SEC(sbi);
43 hblks_per_sec = blks_per_sec / 2;
44 for (segno = 0; segno < MAIN_SEGS(sbi); segno += SEGS_PER_SEC(sbi)) {
45 vblocks = get_valid_blocks(sbi, segno, true);
46 dist = abs(vblocks - hblks_per_sec);
47 bimodal += dist * dist;
48
49 if (vblocks > 0 && vblocks < blks_per_sec) {
50 total_vblocks += vblocks;
51 ndirty++;
52 }
53 }
54 dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
55 si->bimodal = div64_u64(bimodal, dist);
56 if (si->dirty_count)
57 si->avg_vblocks = div_u64(total_vblocks, ndirty);
58 else
59 si->avg_vblocks = 0;
60 }
61
62 #ifdef CONFIG_DEBUG_FS
update_multidevice_stats(struct f2fs_sb_info * sbi)63 static 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
update_general_status(struct f2fs_sb_info * sbi)127 static 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->ndonate_files = sbi->donate_files;
168 si->nquota_files = sbi->nquota_files;
169 si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
170 si->aw_cnt = atomic_read(&sbi->atomic_files);
171 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
172 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
173 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
174 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
175 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
176 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
177 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
178 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
179 if (SM_I(sbi)->fcc_info) {
180 si->nr_flushed =
181 atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
182 si->nr_flushing =
183 atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
184 si->flush_list_empty =
185 llist_empty(&SM_I(sbi)->fcc_info->issue_list);
186 }
187 if (SM_I(sbi)->dcc_info) {
188 si->nr_discarded =
189 atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
190 si->nr_discarding =
191 atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
192 si->nr_discard_cmd =
193 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
194 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
195 }
196 si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt);
197 si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt);
198 si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt);
199 spin_lock(&sbi->cprc_info.stat_lock);
200 si->cur_ckpt_time = sbi->cprc_info.cur_time;
201 si->peak_ckpt_time = sbi->cprc_info.peak_time;
202 spin_unlock(&sbi->cprc_info.stat_lock);
203 si->total_count = BLKS_TO_SEGS(sbi, (int)sbi->user_block_count);
204 si->rsvd_segs = reserved_segments(sbi);
205 si->overp_segs = overprovision_segments(sbi);
206 si->valid_count = valid_user_blocks(sbi);
207 si->discard_blks = discard_blocks(sbi);
208 si->valid_node_count = valid_node_count(sbi);
209 si->valid_inode_count = valid_inode_count(sbi);
210 si->inline_xattr = atomic_read(&sbi->inline_xattr);
211 si->inline_inode = atomic_read(&sbi->inline_inode);
212 si->inline_dir = atomic_read(&sbi->inline_dir);
213 si->compr_inode = atomic_read(&sbi->compr_inode);
214 si->swapfile_inode = atomic_read(&sbi->swapfile_inode);
215 si->compr_blocks = atomic64_read(&sbi->compr_blocks);
216 si->append = sbi->im[APPEND_INO].ino_num;
217 si->update = sbi->im[UPDATE_INO].ino_num;
218 si->orphans = sbi->im[ORPHAN_INO].ino_num;
219 si->utilization = utilization(sbi);
220
221 si->free_segs = free_segments(sbi);
222 si->free_secs = free_sections(sbi);
223 si->prefree_count = prefree_segments(sbi);
224 si->dirty_count = dirty_segments(sbi);
225 if (sbi->node_inode)
226 si->node_pages = NODE_MAPPING(sbi)->nrpages;
227 if (sbi->meta_inode)
228 si->meta_pages = META_MAPPING(sbi)->nrpages;
229 #ifdef CONFIG_F2FS_FS_COMPRESSION
230 if (sbi->compress_inode) {
231 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages;
232 si->compress_page_hit = atomic_read(&sbi->compress_page_hit);
233 }
234 #endif
235 si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
236 si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
237 si->sits = MAIN_SEGS(sbi);
238 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
239 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
240 si->avail_nids = NM_I(sbi)->available_nids;
241 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
242 si->io_skip_bggc = sbi->io_skip_bggc;
243 si->other_skip_bggc = sbi->other_skip_bggc;
244 si->util_free = (int)(BLKS_TO_SEGS(sbi, free_user_blocks(sbi)))
245 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
246 / 2;
247 si->util_valid = (int)(BLKS_TO_SEGS(sbi, written_block_count(sbi)))
248 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
249 / 2;
250 si->util_invalid = 50 - si->util_free - si->util_valid;
251 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
252 struct curseg_info *curseg = CURSEG_I(sbi, i);
253
254 si->curseg[i] = curseg->segno;
255 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
256 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
257 }
258
259 for (i = META_CP; i < META_MAX; i++)
260 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
261
262 for (i = 0; i < NO_CHECK_TYPE; i++) {
263 si->dirty_seg[i] = 0;
264 si->full_seg[i] = 0;
265 si->valid_blks[i] = 0;
266 }
267
268 for (i = 0; i < MAIN_SEGS(sbi); i++) {
269 int blks = get_seg_entry(sbi, i)->valid_blocks;
270 int type = get_seg_entry(sbi, i)->type;
271
272 if (!blks)
273 continue;
274
275 if (blks == BLKS_PER_SEG(sbi))
276 si->full_seg[type]++;
277 else
278 si->dirty_seg[type]++;
279 si->valid_blks[type] += blks;
280 }
281
282 update_multidevice_stats(sbi);
283
284 for (i = 0; i < MAX_CALL_TYPE; i++)
285 si->cp_call_count[i] = atomic_read(&sbi->cp_call_count[i]);
286
287 for (i = 0; i < 2; i++) {
288 si->segment_count[i] = sbi->segment_count[i];
289 si->block_count[i] = sbi->block_count[i];
290 }
291
292 si->inplace_count = atomic_read(&sbi->inplace_count);
293 }
294
295 /*
296 * This function calculates memory footprint.
297 */
update_mem_info(struct f2fs_sb_info * sbi)298 static void update_mem_info(struct f2fs_sb_info *sbi)
299 {
300 struct f2fs_stat_info *si = F2FS_STAT(sbi);
301 int i;
302
303 if (si->base_mem)
304 goto get_cache;
305
306 /* build stat */
307 si->base_mem = sizeof(struct f2fs_stat_info);
308
309 /* build superblock */
310 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
311 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
312 si->base_mem += sizeof(*sbi->ckpt);
313
314 /* build sm */
315 si->base_mem += sizeof(struct f2fs_sm_info);
316
317 /* build sit */
318 si->base_mem += sizeof(struct sit_info);
319 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
320 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
321 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
322 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
323 si->base_mem += SIT_VBLOCK_MAP_SIZE;
324 if (__is_large_section(sbi))
325 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
326 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
327
328 /* build free segmap */
329 si->base_mem += sizeof(struct free_segmap_info);
330 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
331 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
332
333 /* build curseg */
334 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
335 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
336
337 /* build dirty segmap */
338 si->base_mem += sizeof(struct dirty_seglist_info);
339 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
340 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
341
342 /* build nm */
343 si->base_mem += sizeof(struct f2fs_nm_info);
344 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
345 si->base_mem += F2FS_BLK_TO_BYTES(NM_I(sbi)->nat_bits_blocks);
346 si->base_mem += NM_I(sbi)->nat_blocks *
347 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
348 si->base_mem += NM_I(sbi)->nat_blocks / 8;
349 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
350
351 get_cache:
352 si->cache_mem = 0;
353
354 /* build gc */
355 if (sbi->gc_thread)
356 si->cache_mem += sizeof(struct f2fs_gc_kthread);
357
358 /* build merge flush thread */
359 if (SM_I(sbi)->fcc_info)
360 si->cache_mem += sizeof(struct flush_cmd_control);
361 if (SM_I(sbi)->dcc_info) {
362 si->cache_mem += sizeof(struct discard_cmd_control);
363 si->cache_mem += sizeof(struct discard_cmd) *
364 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
365 }
366
367 /* free nids */
368 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
369 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
370 sizeof(struct free_nid);
371 si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
372 sizeof(struct nat_entry);
373 si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
374 sizeof(struct nat_entry_set);
375 for (i = 0; i < MAX_INO_ENTRY; i++)
376 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
377
378 for (i = 0; i < NR_EXTENT_CACHES; i++) {
379 struct extent_tree_info *eti = &sbi->extent_tree[i];
380
381 si->ext_mem[i] = atomic_read(&eti->total_ext_tree) *
382 sizeof(struct extent_tree);
383 si->ext_mem[i] += atomic_read(&eti->total_ext_node) *
384 sizeof(struct extent_node);
385 si->cache_mem += si->ext_mem[i];
386 }
387
388 si->page_mem = 0;
389 if (sbi->node_inode) {
390 unsigned long npages = NODE_MAPPING(sbi)->nrpages;
391
392 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
393 }
394 if (sbi->meta_inode) {
395 unsigned long npages = META_MAPPING(sbi)->nrpages;
396
397 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
398 }
399 #ifdef CONFIG_F2FS_FS_COMPRESSION
400 if (sbi->compress_inode) {
401 unsigned long npages = COMPRESS_MAPPING(sbi)->nrpages;
402
403 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
404 }
405 #endif
406 }
407
408 static const char *s_flag[MAX_SBI_FLAG] = {
409 [SBI_IS_DIRTY] = "fs_dirty",
410 [SBI_IS_CLOSE] = "closing",
411 [SBI_NEED_FSCK] = "need_fsck",
412 [SBI_POR_DOING] = "recovering",
413 [SBI_NEED_SB_WRITE] = "sb_dirty",
414 [SBI_NEED_CP] = "need_cp",
415 [SBI_IS_SHUTDOWN] = "shutdown",
416 [SBI_IS_RECOVERED] = "recovered",
417 [SBI_CP_DISABLED] = "cp_disabled",
418 [SBI_CP_DISABLED_QUICK] = "cp_disabled_quick",
419 [SBI_QUOTA_NEED_FLUSH] = "quota_need_flush",
420 [SBI_QUOTA_SKIP_FLUSH] = "quota_skip_flush",
421 [SBI_QUOTA_NEED_REPAIR] = "quota_need_repair",
422 [SBI_IS_RESIZEFS] = "resizefs",
423 [SBI_IS_FREEZING] = "freezefs",
424 [SBI_IS_WRITABLE] = "writable",
425 };
426
427 static const char *ipu_mode_names[F2FS_IPU_MAX] = {
428 [F2FS_IPU_FORCE] = "FORCE",
429 [F2FS_IPU_SSR] = "SSR",
430 [F2FS_IPU_UTIL] = "UTIL",
431 [F2FS_IPU_SSR_UTIL] = "SSR_UTIL",
432 [F2FS_IPU_FSYNC] = "FSYNC",
433 [F2FS_IPU_ASYNC] = "ASYNC",
434 [F2FS_IPU_NOCACHE] = "NOCACHE",
435 [F2FS_IPU_HONOR_OPU_WRITE] = "HONOR_OPU_WRITE",
436 };
437
stat_show(struct seq_file * s,void * v)438 static int stat_show(struct seq_file *s, void *v)
439 {
440 struct f2fs_stat_info *si;
441 int i = 0, j = 0;
442
443 spin_lock(&f2fs_stat_lock);
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, " - Donate Inode: %u\n",
505 si->ndonate_files);
506 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
507 si->orphans, si->append, si->update);
508 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
509 si->main_area_segs, si->main_area_sections,
510 si->main_area_zones);
511 seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n",
512 "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
513 seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n",
514 si->curseg[CURSEG_COLD_DATA],
515 si->cursec[CURSEG_COLD_DATA],
516 si->curzone[CURSEG_COLD_DATA],
517 si->dirty_seg[CURSEG_COLD_DATA],
518 si->full_seg[CURSEG_COLD_DATA],
519 si->valid_blks[CURSEG_COLD_DATA]);
520 seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n",
521 si->curseg[CURSEG_WARM_DATA],
522 si->cursec[CURSEG_WARM_DATA],
523 si->curzone[CURSEG_WARM_DATA],
524 si->dirty_seg[CURSEG_WARM_DATA],
525 si->full_seg[CURSEG_WARM_DATA],
526 si->valid_blks[CURSEG_WARM_DATA]);
527 seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n",
528 si->curseg[CURSEG_HOT_DATA],
529 si->cursec[CURSEG_HOT_DATA],
530 si->curzone[CURSEG_HOT_DATA],
531 si->dirty_seg[CURSEG_HOT_DATA],
532 si->full_seg[CURSEG_HOT_DATA],
533 si->valid_blks[CURSEG_HOT_DATA]);
534 seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n",
535 si->curseg[CURSEG_HOT_NODE],
536 si->cursec[CURSEG_HOT_NODE],
537 si->curzone[CURSEG_HOT_NODE],
538 si->dirty_seg[CURSEG_HOT_NODE],
539 si->full_seg[CURSEG_HOT_NODE],
540 si->valid_blks[CURSEG_HOT_NODE]);
541 seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n",
542 si->curseg[CURSEG_WARM_NODE],
543 si->cursec[CURSEG_WARM_NODE],
544 si->curzone[CURSEG_WARM_NODE],
545 si->dirty_seg[CURSEG_WARM_NODE],
546 si->full_seg[CURSEG_WARM_NODE],
547 si->valid_blks[CURSEG_WARM_NODE]);
548 seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
549 si->curseg[CURSEG_COLD_NODE],
550 si->cursec[CURSEG_COLD_NODE],
551 si->curzone[CURSEG_COLD_NODE],
552 si->dirty_seg[CURSEG_COLD_NODE],
553 si->full_seg[CURSEG_COLD_NODE],
554 si->valid_blks[CURSEG_COLD_NODE]);
555 seq_printf(s, " - Pinned file: %8d %8d %8d\n",
556 si->curseg[CURSEG_COLD_DATA_PINNED],
557 si->cursec[CURSEG_COLD_DATA_PINNED],
558 si->curzone[CURSEG_COLD_DATA_PINNED]);
559 seq_printf(s, " - ATGC data: %8d %8d %8d\n",
560 si->curseg[CURSEG_ALL_DATA_ATGC],
561 si->cursec[CURSEG_ALL_DATA_ATGC],
562 si->curzone[CURSEG_ALL_DATA_ATGC]);
563 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
564 si->main_area_segs - si->dirty_count -
565 si->prefree_count - si->free_segs,
566 si->dirty_count);
567 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
568 si->prefree_count, si->free_segs, si->free_secs);
569 if (f2fs_is_multi_device(sbi)) {
570 seq_puts(s, "Multidevice stats:\n");
571 seq_printf(s, " [seg: %8s %8s %8s %8s %8s]",
572 "inuse", "dirty", "full", "free", "prefree");
573 if (__is_large_section(sbi))
574 seq_printf(s, " [sec: %8s %8s %8s %8s %8s]\n",
575 "inuse", "dirty", "full", "free", "prefree");
576 else
577 seq_puts(s, "\n");
578
579 for (i = 0; i < sbi->s_ndevs; i++) {
580 seq_printf(s, " #%-2d %8u %8u %8u %8u %8u", i,
581 si->dev_stats[i].devstats[0][DEVSTAT_INUSE],
582 si->dev_stats[i].devstats[0][DEVSTAT_DIRTY],
583 si->dev_stats[i].devstats[0][DEVSTAT_FULL],
584 si->dev_stats[i].devstats[0][DEVSTAT_FREE],
585 si->dev_stats[i].devstats[0][DEVSTAT_PREFREE]);
586 if (!__is_large_section(sbi)) {
587 seq_puts(s, "\n");
588 continue;
589 }
590 seq_printf(s, " %8u %8u %8u %8u %8u\n",
591 si->dev_stats[i].devstats[1][DEVSTAT_INUSE],
592 si->dev_stats[i].devstats[1][DEVSTAT_DIRTY],
593 si->dev_stats[i].devstats[1][DEVSTAT_FULL],
594 si->dev_stats[i].devstats[1][DEVSTAT_FREE],
595 si->dev_stats[i].devstats[1][DEVSTAT_PREFREE]);
596 }
597 seq_puts(s, "\n");
598 }
599 seq_printf(s, "CP calls: %d (BG: %d)\n",
600 si->cp_call_count[TOTAL_CALL],
601 si->cp_call_count[BACKGROUND]);
602 seq_printf(s, "CP count: %d\n", si->cp_count);
603 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
604 seq_printf(s, " - sit blocks : %u\n",
605 si->meta_count[META_SIT]);
606 seq_printf(s, " - nat blocks : %u\n",
607 si->meta_count[META_NAT]);
608 seq_printf(s, " - ssa blocks : %u\n",
609 si->meta_count[META_SSA]);
610 seq_puts(s, "CP merge:\n");
611 seq_printf(s, " - Queued : %4d\n", si->nr_queued_ckpt);
612 seq_printf(s, " - Issued : %4d\n", si->nr_issued_ckpt);
613 seq_printf(s, " - Total : %4d\n", si->nr_total_ckpt);
614 seq_printf(s, " - Cur time : %4d(ms)\n", si->cur_ckpt_time);
615 seq_printf(s, " - Peak time : %4d(ms)\n", si->peak_ckpt_time);
616 seq_printf(s, "GC calls: %d (gc_thread: %d)\n",
617 si->gc_call_count[BACKGROUND] +
618 si->gc_call_count[FOREGROUND],
619 si->gc_call_count[BACKGROUND]);
620 if (__is_large_section(sbi)) {
621 seq_printf(s, " - data sections : %d (BG: %d)\n",
622 si->gc_secs[DATA][BG_GC] + si->gc_secs[DATA][FG_GC],
623 si->gc_secs[DATA][BG_GC]);
624 seq_printf(s, " - node sections : %d (BG: %d)\n",
625 si->gc_secs[NODE][BG_GC] + si->gc_secs[NODE][FG_GC],
626 si->gc_secs[NODE][BG_GC]);
627 }
628 seq_printf(s, " - data segments : %d (BG: %d)\n",
629 si->gc_segs[DATA][BG_GC] + si->gc_segs[DATA][FG_GC],
630 si->gc_segs[DATA][BG_GC]);
631 seq_printf(s, " - node segments : %d (BG: %d)\n",
632 si->gc_segs[NODE][BG_GC] + si->gc_segs[NODE][FG_GC],
633 si->gc_segs[NODE][BG_GC]);
634 seq_puts(s, " - Reclaimed segs :\n");
635 seq_printf(s, " - Normal : %d\n", sbi->gc_reclaimed_segs[GC_NORMAL]);
636 seq_printf(s, " - Idle CB : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_CB]);
637 seq_printf(s, " - Idle Greedy : %d\n",
638 sbi->gc_reclaimed_segs[GC_IDLE_GREEDY]);
639 seq_printf(s, " - Idle AT : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_AT]);
640 seq_printf(s, " - Urgent High : %d\n",
641 sbi->gc_reclaimed_segs[GC_URGENT_HIGH]);
642 seq_printf(s, " - Urgent Mid : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_MID]);
643 seq_printf(s, " - Urgent Low : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_LOW]);
644 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
645 si->bg_data_blks + si->bg_node_blks);
646 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
647 si->bg_data_blks);
648 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
649 si->bg_node_blks);
650 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
651 si->io_skip_bggc, si->other_skip_bggc);
652 seq_puts(s, "\nExtent Cache (Read):\n");
653 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
654 si->hit_largest, si->hit_cached[EX_READ],
655 si->hit_rbtree[EX_READ]);
656 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
657 !si->total_ext[EX_READ] ? 0 :
658 div64_u64(si->hit_total[EX_READ] * 100,
659 si->total_ext[EX_READ]),
660 si->hit_total[EX_READ], si->total_ext[EX_READ]);
661 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
662 si->ext_tree[EX_READ], si->zombie_tree[EX_READ],
663 si->ext_node[EX_READ]);
664 seq_puts(s, "\nExtent Cache (Block Age):\n");
665 seq_printf(s, " - Allocated Data Blocks: %llu\n",
666 si->allocated_data_blocks);
667 seq_printf(s, " - Hit Count: L1:%llu L2:%llu\n",
668 si->hit_cached[EX_BLOCK_AGE],
669 si->hit_rbtree[EX_BLOCK_AGE]);
670 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
671 !si->total_ext[EX_BLOCK_AGE] ? 0 :
672 div64_u64(si->hit_total[EX_BLOCK_AGE] * 100,
673 si->total_ext[EX_BLOCK_AGE]),
674 si->hit_total[EX_BLOCK_AGE],
675 si->total_ext[EX_BLOCK_AGE]);
676 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
677 si->ext_tree[EX_BLOCK_AGE],
678 si->zombie_tree[EX_BLOCK_AGE],
679 si->ext_node[EX_BLOCK_AGE]);
680 seq_puts(s, "\nBalancing F2FS Async:\n");
681 seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
682 si->nr_dio_read, si->nr_dio_write);
683 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
684 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
685 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), ",
686 si->nr_wb_cp_data, si->nr_wb_data,
687 si->nr_flushing, si->nr_flushed,
688 si->flush_list_empty);
689 seq_printf(s, "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
690 si->nr_discarding, si->nr_discarded,
691 si->nr_discard_cmd, si->undiscard_blks);
692 seq_printf(s, " - atomic IO: %4d (Max. %4d)\n",
693 si->aw_cnt, si->max_aw_cnt);
694 seq_printf(s, " - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit);
695 seq_printf(s, " - nodes: %4d in %4d\n",
696 si->ndirty_node, si->node_pages);
697 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
698 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
699 seq_printf(s, " - data: %4d in files:%4d\n",
700 si->ndirty_data, si->ndirty_files);
701 seq_printf(s, " - quota data: %4d in quota files:%4d\n",
702 si->ndirty_qdata, si->nquota_files);
703 seq_printf(s, " - meta: %4d in %4d\n",
704 si->ndirty_meta, si->meta_pages);
705 seq_printf(s, " - imeta: %4d\n",
706 si->ndirty_imeta);
707 seq_printf(s, " - fsync mark: %4lld\n",
708 percpu_counter_sum_positive(
709 &sbi->rf_node_block_count));
710 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
711 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
712 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
713 si->free_nids, si->avail_nids, si->alloc_nids);
714 seq_puts(s, "\nDistribution of User Blocks:");
715 seq_puts(s, " [ valid | invalid | free ]\n");
716 seq_puts(s, " [");
717
718 for (j = 0; j < si->util_valid; j++)
719 seq_putc(s, '-');
720 seq_putc(s, '|');
721
722 for (j = 0; j < si->util_invalid; j++)
723 seq_putc(s, '-');
724 seq_putc(s, '|');
725
726 for (j = 0; j < si->util_free; j++)
727 seq_putc(s, '-');
728 seq_puts(s, "]\n\n");
729 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
730 seq_printf(s, "SSR: %u blocks in %u segments\n",
731 si->block_count[SSR], si->segment_count[SSR]);
732 seq_printf(s, "LFS: %u blocks in %u segments\n",
733 si->block_count[LFS], si->segment_count[LFS]);
734
735 /* segment usage info */
736 f2fs_update_sit_info(sbi);
737 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
738 si->bimodal, si->avg_vblocks);
739
740 /* memory footprint */
741 update_mem_info(sbi);
742 seq_printf(s, "\nMemory: %llu KB\n",
743 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
744 seq_printf(s, " - static: %llu KB\n",
745 si->base_mem >> 10);
746 seq_printf(s, " - cached all: %llu KB\n",
747 si->cache_mem >> 10);
748 seq_printf(s, " - read extent cache: %llu KB\n",
749 si->ext_mem[EX_READ] >> 10);
750 seq_printf(s, " - block age extent cache: %llu KB\n",
751 si->ext_mem[EX_BLOCK_AGE] >> 10);
752 seq_printf(s, " - paged : %llu KB\n",
753 si->page_mem >> 10);
754 }
755 spin_unlock(&f2fs_stat_lock);
756 return 0;
757 }
758
759 DEFINE_SHOW_ATTRIBUTE(stat);
760 #endif
761
f2fs_build_stats(struct f2fs_sb_info * sbi)762 int f2fs_build_stats(struct f2fs_sb_info *sbi)
763 {
764 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
765 struct f2fs_stat_info *si;
766 struct f2fs_dev_stats *dev_stats;
767 int i;
768
769 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
770 if (!si)
771 return -ENOMEM;
772
773 dev_stats = f2fs_kzalloc(sbi, sizeof(struct f2fs_dev_stats) *
774 sbi->s_ndevs, GFP_KERNEL);
775 if (!dev_stats) {
776 kfree(si);
777 return -ENOMEM;
778 }
779
780 si->dev_stats = dev_stats;
781
782 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
783 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
784 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
785 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
786 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
787 si->main_area_sections = le32_to_cpu(raw_super->section_count);
788 si->main_area_zones = si->main_area_sections /
789 le32_to_cpu(raw_super->secs_per_zone);
790 si->sbi = sbi;
791 sbi->stat_info = si;
792
793 /* general extent cache stats */
794 for (i = 0; i < NR_EXTENT_CACHES; i++) {
795 atomic64_set(&sbi->total_hit_ext[i], 0);
796 atomic64_set(&sbi->read_hit_rbtree[i], 0);
797 atomic64_set(&sbi->read_hit_cached[i], 0);
798 }
799
800 /* read extent_cache only */
801 atomic64_set(&sbi->read_hit_largest, 0);
802
803 atomic_set(&sbi->inline_xattr, 0);
804 atomic_set(&sbi->inline_inode, 0);
805 atomic_set(&sbi->inline_dir, 0);
806 atomic_set(&sbi->compr_inode, 0);
807 atomic64_set(&sbi->compr_blocks, 0);
808 atomic_set(&sbi->swapfile_inode, 0);
809 atomic_set(&sbi->atomic_files, 0);
810 atomic_set(&sbi->inplace_count, 0);
811 for (i = META_CP; i < META_MAX; i++)
812 atomic_set(&sbi->meta_count[i], 0);
813 for (i = 0; i < MAX_CALL_TYPE; i++)
814 atomic_set(&sbi->cp_call_count[i], 0);
815
816 atomic_set(&sbi->max_aw_cnt, 0);
817
818 spin_lock(&f2fs_stat_lock);
819 list_add_tail(&si->stat_list, &f2fs_stat_list);
820 spin_unlock(&f2fs_stat_lock);
821
822 return 0;
823 }
824
f2fs_destroy_stats(struct f2fs_sb_info * sbi)825 void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
826 {
827 struct f2fs_stat_info *si = F2FS_STAT(sbi);
828
829 spin_lock(&f2fs_stat_lock);
830 list_del(&si->stat_list);
831 spin_unlock(&f2fs_stat_lock);
832
833 kfree(si->dev_stats);
834 kfree(si);
835 }
836
f2fs_create_root_stats(void)837 void __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
f2fs_destroy_root_stats(void)847 void 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 }
854