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_MUTEX(f2fs_stat_mutex);
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 = 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
update_general_status(struct f2fs_sb_info * sbi)63 static void update_general_status(struct f2fs_sb_info *sbi)
64 {
65 struct f2fs_stat_info *si = F2FS_STAT(sbi);
66 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
67 int i;
68
69 /* these will be changed if online resize is done */
70 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
71 si->main_area_sections = le32_to_cpu(raw_super->section_count);
72 si->main_area_zones = si->main_area_sections /
73 le32_to_cpu(raw_super->secs_per_zone);
74
75 /* general extent cache stats */
76 for (i = 0; i < NR_EXTENT_CACHES; i++) {
77 struct extent_tree_info *eti = &sbi->extent_tree[i];
78
79 si->hit_cached[i] = atomic64_read(&sbi->read_hit_cached[i]);
80 si->hit_rbtree[i] = atomic64_read(&sbi->read_hit_rbtree[i]);
81 si->total_ext[i] = atomic64_read(&sbi->total_hit_ext[i]);
82 si->hit_total[i] = si->hit_cached[i] + si->hit_rbtree[i];
83 si->ext_tree[i] = atomic_read(&eti->total_ext_tree);
84 si->zombie_tree[i] = atomic_read(&eti->total_zombie_tree);
85 si->ext_node[i] = atomic_read(&eti->total_ext_node);
86 }
87 /* read extent_cache only */
88 si->hit_largest = atomic64_read(&sbi->read_hit_largest);
89 si->hit_total[EX_READ] += si->hit_largest;
90
91 /* block age extent_cache only */
92 si->allocated_data_blocks = atomic64_read(&sbi->allocated_data_blocks);
93
94 /* validation check of the segment numbers */
95 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
96 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
97 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
98 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
99 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
100 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
101 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
102 si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
103 si->nquota_files = sbi->nquota_files;
104 si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
105 si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
106 si->aw_cnt = sbi->atomic_files;
107 si->vw_cnt = atomic_read(&sbi->vw_cnt);
108 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
109 si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt);
110 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
111 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
112 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
113 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
114 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
115 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
116 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
117 if (SM_I(sbi)->fcc_info) {
118 si->nr_flushed =
119 atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
120 si->nr_flushing =
121 atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
122 si->flush_list_empty =
123 llist_empty(&SM_I(sbi)->fcc_info->issue_list);
124 }
125 if (SM_I(sbi)->dcc_info) {
126 si->nr_discarded =
127 atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
128 si->nr_discarding =
129 atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
130 si->nr_discard_cmd =
131 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
132 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
133 }
134 si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt);
135 si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt);
136 si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt);
137 spin_lock(&sbi->cprc_info.stat_lock);
138 si->cur_ckpt_time = sbi->cprc_info.cur_time;
139 si->peak_ckpt_time = sbi->cprc_info.peak_time;
140 spin_unlock(&sbi->cprc_info.stat_lock);
141 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
142 si->rsvd_segs = reserved_segments(sbi);
143 si->overp_segs = overprovision_segments(sbi);
144 si->valid_count = valid_user_blocks(sbi);
145 si->discard_blks = discard_blocks(sbi);
146 si->valid_node_count = valid_node_count(sbi);
147 si->valid_inode_count = valid_inode_count(sbi);
148 si->inline_xattr = atomic_read(&sbi->inline_xattr);
149 si->inline_inode = atomic_read(&sbi->inline_inode);
150 si->inline_dir = atomic_read(&sbi->inline_dir);
151 si->compr_inode = atomic_read(&sbi->compr_inode);
152 si->compr_blocks = atomic64_read(&sbi->compr_blocks);
153 si->append = sbi->im[APPEND_INO].ino_num;
154 si->update = sbi->im[UPDATE_INO].ino_num;
155 si->orphans = sbi->im[ORPHAN_INO].ino_num;
156 si->utilization = utilization(sbi);
157
158 si->free_segs = free_segments(sbi);
159 si->free_secs = free_sections(sbi);
160 si->prefree_count = prefree_segments(sbi);
161 si->dirty_count = dirty_segments(sbi);
162 if (sbi->node_inode)
163 si->node_pages = NODE_MAPPING(sbi)->nrpages;
164 if (sbi->meta_inode)
165 si->meta_pages = META_MAPPING(sbi)->nrpages;
166 #ifdef CONFIG_F2FS_FS_COMPRESSION
167 if (sbi->compress_inode) {
168 si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages;
169 si->compress_page_hit = atomic_read(&sbi->compress_page_hit);
170 }
171 #endif
172 si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
173 si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
174 si->sits = MAIN_SEGS(sbi);
175 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
176 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
177 si->avail_nids = NM_I(sbi)->available_nids;
178 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
179 si->io_skip_bggc = sbi->io_skip_bggc;
180 si->other_skip_bggc = sbi->other_skip_bggc;
181 si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC];
182 si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC];
183 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
184 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
185 / 2;
186 si->util_valid = (int)(written_block_count(sbi) >>
187 sbi->log_blocks_per_seg)
188 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
189 / 2;
190 si->util_invalid = 50 - si->util_free - si->util_valid;
191 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
192 struct curseg_info *curseg = CURSEG_I(sbi, i);
193
194 si->curseg[i] = curseg->segno;
195 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
196 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
197 }
198
199 for (i = META_CP; i < META_MAX; i++)
200 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
201
202 for (i = 0; i < NO_CHECK_TYPE; i++) {
203 si->dirty_seg[i] = 0;
204 si->full_seg[i] = 0;
205 si->valid_blks[i] = 0;
206 }
207
208 for (i = 0; i < MAIN_SEGS(sbi); i++) {
209 int blks = get_seg_entry(sbi, i)->valid_blocks;
210 int type = get_seg_entry(sbi, i)->type;
211
212 if (!blks)
213 continue;
214
215 if (blks == sbi->blocks_per_seg)
216 si->full_seg[type]++;
217 else
218 si->dirty_seg[type]++;
219 si->valid_blks[type] += blks;
220 }
221
222 for (i = 0; i < 2; i++) {
223 si->segment_count[i] = sbi->segment_count[i];
224 si->block_count[i] = sbi->block_count[i];
225 }
226
227 si->inplace_count = atomic_read(&sbi->inplace_count);
228 }
229
230 /*
231 * This function calculates memory footprint.
232 */
update_mem_info(struct f2fs_sb_info * sbi)233 static void update_mem_info(struct f2fs_sb_info *sbi)
234 {
235 struct f2fs_stat_info *si = F2FS_STAT(sbi);
236 int i;
237
238 if (si->base_mem)
239 goto get_cache;
240
241 /* build stat */
242 si->base_mem = sizeof(struct f2fs_stat_info);
243
244 /* build superblock */
245 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
246 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
247 si->base_mem += sizeof(*sbi->ckpt);
248
249 /* build sm */
250 si->base_mem += sizeof(struct f2fs_sm_info);
251
252 /* build sit */
253 si->base_mem += sizeof(struct sit_info);
254 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
255 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
256 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
257 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
258 si->base_mem += SIT_VBLOCK_MAP_SIZE;
259 if (__is_large_section(sbi))
260 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
261 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
262
263 /* build free segmap */
264 si->base_mem += sizeof(struct free_segmap_info);
265 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
266 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
267
268 /* build curseg */
269 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
270 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
271
272 /* build dirty segmap */
273 si->base_mem += sizeof(struct dirty_seglist_info);
274 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
275 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
276
277 /* build nm */
278 si->base_mem += sizeof(struct f2fs_nm_info);
279 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
280 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
281 si->base_mem += NM_I(sbi)->nat_blocks *
282 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
283 si->base_mem += NM_I(sbi)->nat_blocks / 8;
284 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
285
286 get_cache:
287 si->cache_mem = 0;
288
289 /* build gc */
290 if (sbi->gc_thread)
291 si->cache_mem += sizeof(struct f2fs_gc_kthread);
292
293 /* build merge flush thread */
294 if (SM_I(sbi)->fcc_info)
295 si->cache_mem += sizeof(struct flush_cmd_control);
296 if (SM_I(sbi)->dcc_info) {
297 si->cache_mem += sizeof(struct discard_cmd_control);
298 si->cache_mem += sizeof(struct discard_cmd) *
299 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
300 }
301
302 /* free nids */
303 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
304 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
305 sizeof(struct free_nid);
306 si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
307 sizeof(struct nat_entry);
308 si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
309 sizeof(struct nat_entry_set);
310 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
311 for (i = 0; i < MAX_INO_ENTRY; i++)
312 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
313
314 for (i = 0; i < NR_EXTENT_CACHES; i++) {
315 struct extent_tree_info *eti = &sbi->extent_tree[i];
316
317 si->ext_mem[i] = atomic_read(&eti->total_ext_tree) *
318 sizeof(struct extent_tree);
319 si->ext_mem[i] += atomic_read(&eti->total_ext_node) *
320 sizeof(struct extent_node);
321 si->cache_mem += si->ext_mem[i];
322 }
323
324 si->page_mem = 0;
325 if (sbi->node_inode) {
326 unsigned npages = NODE_MAPPING(sbi)->nrpages;
327
328 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
329 }
330 if (sbi->meta_inode) {
331 unsigned npages = META_MAPPING(sbi)->nrpages;
332
333 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
334 }
335 #ifdef CONFIG_F2FS_FS_COMPRESSION
336 if (sbi->compress_inode) {
337 unsigned npages = COMPRESS_MAPPING(sbi)->nrpages;
338 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
339 }
340 #endif
341 }
342
stat_show(struct seq_file * s,void * v)343 static int stat_show(struct seq_file *s, void *v)
344 {
345 struct f2fs_stat_info *si;
346 int i = 0;
347 int j;
348
349 mutex_lock(&f2fs_stat_mutex);
350 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
351 update_general_status(si->sbi);
352
353 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
354 si->sbi->sb->s_bdev, i++,
355 f2fs_readonly(si->sbi->sb) ? "RO": "RW",
356 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
357 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good"));
358 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
359 si->sit_area_segs, si->nat_area_segs);
360 seq_printf(s, "[SSA: %d] [MAIN: %d",
361 si->ssa_area_segs, si->main_area_segs);
362 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
363 si->overp_segs, si->rsvd_segs);
364 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",
365 ktime_get_boottime_seconds(),
366 SIT_I(si->sbi)->mounted_time);
367 if (test_opt(si->sbi, DISCARD))
368 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
369 si->utilization, si->valid_count, si->discard_blks);
370 else
371 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
372 si->utilization, si->valid_count);
373
374 seq_printf(s, " - Node: %u (Inode: %u, ",
375 si->valid_node_count, si->valid_inode_count);
376 seq_printf(s, "Other: %u)\n - Data: %u\n",
377 si->valid_node_count - si->valid_inode_count,
378 si->valid_count - si->valid_node_count);
379 seq_printf(s, " - Inline_xattr Inode: %u\n",
380 si->inline_xattr);
381 seq_printf(s, " - Inline_data Inode: %u\n",
382 si->inline_inode);
383 seq_printf(s, " - Inline_dentry Inode: %u\n",
384 si->inline_dir);
385 seq_printf(s, " - Compressed Inode: %u, Blocks: %llu\n",
386 si->compr_inode, si->compr_blocks);
387 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
388 si->orphans, si->append, si->update);
389 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
390 si->main_area_segs, si->main_area_sections,
391 si->main_area_zones);
392 seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n",
393 "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
394 seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n",
395 si->curseg[CURSEG_COLD_DATA],
396 si->cursec[CURSEG_COLD_DATA],
397 si->curzone[CURSEG_COLD_DATA],
398 si->dirty_seg[CURSEG_COLD_DATA],
399 si->full_seg[CURSEG_COLD_DATA],
400 si->valid_blks[CURSEG_COLD_DATA]);
401 seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n",
402 si->curseg[CURSEG_WARM_DATA],
403 si->cursec[CURSEG_WARM_DATA],
404 si->curzone[CURSEG_WARM_DATA],
405 si->dirty_seg[CURSEG_WARM_DATA],
406 si->full_seg[CURSEG_WARM_DATA],
407 si->valid_blks[CURSEG_WARM_DATA]);
408 seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n",
409 si->curseg[CURSEG_HOT_DATA],
410 si->cursec[CURSEG_HOT_DATA],
411 si->curzone[CURSEG_HOT_DATA],
412 si->dirty_seg[CURSEG_HOT_DATA],
413 si->full_seg[CURSEG_HOT_DATA],
414 si->valid_blks[CURSEG_HOT_DATA]);
415 seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n",
416 si->curseg[CURSEG_HOT_NODE],
417 si->cursec[CURSEG_HOT_NODE],
418 si->curzone[CURSEG_HOT_NODE],
419 si->dirty_seg[CURSEG_HOT_NODE],
420 si->full_seg[CURSEG_HOT_NODE],
421 si->valid_blks[CURSEG_HOT_NODE]);
422 seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n",
423 si->curseg[CURSEG_WARM_NODE],
424 si->cursec[CURSEG_WARM_NODE],
425 si->curzone[CURSEG_WARM_NODE],
426 si->dirty_seg[CURSEG_WARM_NODE],
427 si->full_seg[CURSEG_WARM_NODE],
428 si->valid_blks[CURSEG_WARM_NODE]);
429 seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
430 si->curseg[CURSEG_COLD_NODE],
431 si->cursec[CURSEG_COLD_NODE],
432 si->curzone[CURSEG_COLD_NODE],
433 si->dirty_seg[CURSEG_COLD_NODE],
434 si->full_seg[CURSEG_COLD_NODE],
435 si->valid_blks[CURSEG_COLD_NODE]);
436 seq_printf(s, " - Pinned file: %8d %8d %8d\n",
437 si->curseg[CURSEG_COLD_DATA_PINNED],
438 si->cursec[CURSEG_COLD_DATA_PINNED],
439 si->curzone[CURSEG_COLD_DATA_PINNED]);
440 seq_printf(s, " - ATGC data: %8d %8d %8d\n",
441 si->curseg[CURSEG_ALL_DATA_ATGC],
442 si->cursec[CURSEG_ALL_DATA_ATGC],
443 si->curzone[CURSEG_ALL_DATA_ATGC]);
444 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
445 si->main_area_segs - si->dirty_count -
446 si->prefree_count - si->free_segs,
447 si->dirty_count);
448 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
449 si->prefree_count, si->free_segs, si->free_secs);
450 seq_printf(s, "CP calls: %d (BG: %d)\n",
451 si->cp_count, si->bg_cp_count);
452 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
453 seq_printf(s, " - sit blocks : %u\n",
454 si->meta_count[META_SIT]);
455 seq_printf(s, " - nat blocks : %u\n",
456 si->meta_count[META_NAT]);
457 seq_printf(s, " - ssa blocks : %u\n",
458 si->meta_count[META_SSA]);
459 seq_printf(s, "CP merge (Queued: %4d, Issued: %4d, Total: %4d, "
460 "Cur time: %4d(ms), Peak time: %4d(ms))\n",
461 si->nr_queued_ckpt, si->nr_issued_ckpt,
462 si->nr_total_ckpt, si->cur_ckpt_time,
463 si->peak_ckpt_time);
464 seq_printf(s, "GC calls: %d (BG: %d)\n",
465 si->call_count, si->bg_gc);
466 seq_printf(s, " - data segments : %d (%d)\n",
467 si->data_segs, si->bg_data_segs);
468 seq_printf(s, " - node segments : %d (%d)\n",
469 si->node_segs, si->bg_node_segs);
470 seq_printf(s, " - Reclaimed segs : Normal (%d), Idle CB (%d), "
471 "Idle Greedy (%d), Idle AT (%d), "
472 "Urgent High (%d), Urgent Mid (%d), "
473 "Urgent Low (%d)\n",
474 si->sbi->gc_reclaimed_segs[GC_NORMAL],
475 si->sbi->gc_reclaimed_segs[GC_IDLE_CB],
476 si->sbi->gc_reclaimed_segs[GC_IDLE_GREEDY],
477 si->sbi->gc_reclaimed_segs[GC_IDLE_AT],
478 si->sbi->gc_reclaimed_segs[GC_URGENT_HIGH],
479 si->sbi->gc_reclaimed_segs[GC_URGENT_MID],
480 si->sbi->gc_reclaimed_segs[GC_URGENT_LOW]);
481 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
482 si->bg_data_blks + si->bg_node_blks);
483 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
484 si->bg_data_blks);
485 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
486 si->bg_node_blks);
487 seq_printf(s, "Skipped : atomic write %llu (%llu)\n",
488 si->skipped_atomic_files[BG_GC] +
489 si->skipped_atomic_files[FG_GC],
490 si->skipped_atomic_files[BG_GC]);
491 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
492 si->io_skip_bggc, si->other_skip_bggc);
493 seq_puts(s, "\nExtent Cache (Read):\n");
494 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
495 si->hit_largest, si->hit_cached[EX_READ],
496 si->hit_rbtree[EX_READ]);
497 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
498 !si->total_ext[EX_READ] ? 0 :
499 div64_u64(si->hit_total[EX_READ] * 100,
500 si->total_ext[EX_READ]),
501 si->hit_total[EX_READ], si->total_ext[EX_READ]);
502 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
503 si->ext_tree[EX_READ], si->zombie_tree[EX_READ],
504 si->ext_node[EX_READ]);
505 seq_puts(s, "\nExtent Cache (Block Age):\n");
506 seq_printf(s, " - Allocated Data Blocks: %llu\n",
507 si->allocated_data_blocks);
508 seq_printf(s, " - Hit Count: L1:%llu L2:%llu\n",
509 si->hit_cached[EX_BLOCK_AGE],
510 si->hit_rbtree[EX_BLOCK_AGE]);
511 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
512 !si->total_ext[EX_BLOCK_AGE] ? 0 :
513 div64_u64(si->hit_total[EX_BLOCK_AGE] * 100,
514 si->total_ext[EX_BLOCK_AGE]),
515 si->hit_total[EX_BLOCK_AGE],
516 si->total_ext[EX_BLOCK_AGE]);
517 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
518 si->ext_tree[EX_BLOCK_AGE],
519 si->zombie_tree[EX_BLOCK_AGE],
520 si->ext_node[EX_BLOCK_AGE]);
521 seq_puts(s, "\nBalancing F2FS Async:\n");
522 seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
523 si->nr_dio_read, si->nr_dio_write);
524 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
525 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
526 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
527 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
528 si->nr_wb_cp_data, si->nr_wb_data,
529 si->nr_flushing, si->nr_flushed,
530 si->flush_list_empty,
531 si->nr_discarding, si->nr_discarded,
532 si->nr_discard_cmd, si->undiscard_blks);
533 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), "
534 "volatile IO: %4d (Max. %4d)\n",
535 si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
536 si->vw_cnt, si->max_vw_cnt);
537 seq_printf(s, " - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit);
538 seq_printf(s, " - nodes: %4d in %4d\n",
539 si->ndirty_node, si->node_pages);
540 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
541 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
542 seq_printf(s, " - datas: %4d in files:%4d\n",
543 si->ndirty_data, si->ndirty_files);
544 seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
545 si->ndirty_qdata, si->nquota_files);
546 seq_printf(s, " - meta: %4d in %4d\n",
547 si->ndirty_meta, si->meta_pages);
548 seq_printf(s, " - imeta: %4d\n",
549 si->ndirty_imeta);
550 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
551 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
552 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
553 si->free_nids, si->avail_nids, si->alloc_nids);
554 seq_puts(s, "\nDistribution of User Blocks:");
555 seq_puts(s, " [ valid | invalid | free ]\n");
556 seq_puts(s, " [");
557
558 for (j = 0; j < si->util_valid; j++)
559 seq_putc(s, '-');
560 seq_putc(s, '|');
561
562 for (j = 0; j < si->util_invalid; j++)
563 seq_putc(s, '-');
564 seq_putc(s, '|');
565
566 for (j = 0; j < si->util_free; j++)
567 seq_putc(s, '-');
568 seq_puts(s, "]\n\n");
569 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
570 seq_printf(s, "SSR: %u blocks in %u segments\n",
571 si->block_count[SSR], si->segment_count[SSR]);
572 seq_printf(s, "LFS: %u blocks in %u segments\n",
573 si->block_count[LFS], si->segment_count[LFS]);
574
575 /* segment usage info */
576 f2fs_update_sit_info(si->sbi);
577 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
578 si->bimodal, si->avg_vblocks);
579
580 /* memory footprint */
581 update_mem_info(si->sbi);
582 seq_printf(s, "\nMemory: %llu KB\n",
583 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
584 seq_printf(s, " - static: %llu KB\n",
585 si->base_mem >> 10);
586 seq_printf(s, " - cached all: %llu KB\n",
587 si->cache_mem >> 10);
588 seq_printf(s, " - read extent cache: %llu KB\n",
589 si->ext_mem[EX_READ] >> 10);
590 seq_printf(s, " - block age extent cache: %llu KB\n",
591 si->ext_mem[EX_BLOCK_AGE] >> 10);
592 seq_printf(s, " - paged : %llu KB\n",
593 si->page_mem >> 10);
594 }
595 mutex_unlock(&f2fs_stat_mutex);
596 return 0;
597 }
598
599 DEFINE_SHOW_ATTRIBUTE(stat);
600 #endif
601
f2fs_build_stats(struct f2fs_sb_info * sbi)602 int f2fs_build_stats(struct f2fs_sb_info *sbi)
603 {
604 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
605 struct f2fs_stat_info *si;
606 int i;
607
608 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
609 if (!si)
610 return -ENOMEM;
611
612 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
613 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
614 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
615 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
616 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
617 si->main_area_sections = le32_to_cpu(raw_super->section_count);
618 si->main_area_zones = si->main_area_sections /
619 le32_to_cpu(raw_super->secs_per_zone);
620 si->sbi = sbi;
621 sbi->stat_info = si;
622
623 /* general extent cache stats */
624 for (i = 0; i < NR_EXTENT_CACHES; i++) {
625 atomic64_set(&sbi->total_hit_ext[i], 0);
626 atomic64_set(&sbi->read_hit_rbtree[i], 0);
627 atomic64_set(&sbi->read_hit_cached[i], 0);
628 }
629
630 /* read extent_cache only */
631 atomic64_set(&sbi->read_hit_largest, 0);
632
633 atomic_set(&sbi->inline_xattr, 0);
634 atomic_set(&sbi->inline_inode, 0);
635 atomic_set(&sbi->inline_dir, 0);
636 atomic_set(&sbi->compr_inode, 0);
637 atomic64_set(&sbi->compr_blocks, 0);
638 atomic_set(&sbi->inplace_count, 0);
639 for (i = META_CP; i < META_MAX; i++)
640 atomic_set(&sbi->meta_count[i], 0);
641
642 atomic_set(&sbi->vw_cnt, 0);
643 atomic_set(&sbi->max_aw_cnt, 0);
644 atomic_set(&sbi->max_vw_cnt, 0);
645
646 mutex_lock(&f2fs_stat_mutex);
647 list_add_tail(&si->stat_list, &f2fs_stat_list);
648 mutex_unlock(&f2fs_stat_mutex);
649
650 return 0;
651 }
652
f2fs_destroy_stats(struct f2fs_sb_info * sbi)653 void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
654 {
655 struct f2fs_stat_info *si = F2FS_STAT(sbi);
656
657 mutex_lock(&f2fs_stat_mutex);
658 list_del(&si->stat_list);
659 mutex_unlock(&f2fs_stat_mutex);
660
661 kfree(si);
662 }
663
f2fs_create_root_stats(void)664 void __init f2fs_create_root_stats(void)
665 {
666 #ifdef CONFIG_DEBUG_FS
667 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
668
669 debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL,
670 &stat_fops);
671 #endif
672 }
673
f2fs_destroy_root_stats(void)674 void f2fs_destroy_root_stats(void)
675 {
676 #ifdef CONFIG_DEBUG_FS
677 debugfs_remove_recursive(f2fs_debugfs_root);
678 f2fs_debugfs_root = NULL;
679 #endif
680 }
681