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f2fs: avoid race condition for shrinker count
[mirror_ubuntu-hirsute-kernel.git] / fs / f2fs / debug.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * f2fs debugging statistics
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 * Copyright (c) 2012 Linux Foundation
8 * Copyright (c) 2012 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 */
10
11 #include <linux/fs.h>
12 #include <linux/backing-dev.h>
13 #include <linux/f2fs_fs.h>
14 #include <linux/blkdev.h>
15 #include <linux/debugfs.h>
16 #include <linux/seq_file.h>
17
18 #include "f2fs.h"
19 #include "node.h"
20 #include "segment.h"
21 #include "gc.h"
22
23 static LIST_HEAD(f2fs_stat_list);
24 static DEFINE_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 */
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
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 /* validation check of the segment numbers */
76 si->hit_largest = atomic64_read(&sbi->read_hit_largest);
77 si->hit_cached = atomic64_read(&sbi->read_hit_cached);
78 si->hit_rbtree = atomic64_read(&sbi->read_hit_rbtree);
79 si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree;
80 si->total_ext = atomic64_read(&sbi->total_hit_ext);
81 si->ext_tree = atomic_read(&sbi->total_ext_tree);
82 si->zombie_tree = atomic_read(&sbi->total_zombie_tree);
83 si->ext_node = atomic_read(&sbi->total_ext_node);
84 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
85 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
86 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
87 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
88 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
89 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
90 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
91 si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
92 si->nquota_files = sbi->nquota_files;
93 si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
94 si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
95 si->aw_cnt = sbi->atomic_files;
96 si->vw_cnt = atomic_read(&sbi->vw_cnt);
97 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
98 si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt);
99 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
100 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
101 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
102 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
103 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
104 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
105 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
106 if (SM_I(sbi)->fcc_info) {
107 si->nr_flushed =
108 atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
109 si->nr_flushing =
110 atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
111 si->flush_list_empty =
112 llist_empty(&SM_I(sbi)->fcc_info->issue_list);
113 }
114 if (SM_I(sbi)->dcc_info) {
115 si->nr_discarded =
116 atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
117 si->nr_discarding =
118 atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
119 si->nr_discard_cmd =
120 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
121 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
122 }
123 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
124 si->rsvd_segs = reserved_segments(sbi);
125 si->overp_segs = overprovision_segments(sbi);
126 si->valid_count = valid_user_blocks(sbi);
127 si->discard_blks = discard_blocks(sbi);
128 si->valid_node_count = valid_node_count(sbi);
129 si->valid_inode_count = valid_inode_count(sbi);
130 si->inline_xattr = atomic_read(&sbi->inline_xattr);
131 si->inline_inode = atomic_read(&sbi->inline_inode);
132 si->inline_dir = atomic_read(&sbi->inline_dir);
133 si->compr_inode = atomic_read(&sbi->compr_inode);
134 si->compr_blocks = atomic64_read(&sbi->compr_blocks);
135 si->append = sbi->im[APPEND_INO].ino_num;
136 si->update = sbi->im[UPDATE_INO].ino_num;
137 si->orphans = sbi->im[ORPHAN_INO].ino_num;
138 si->utilization = utilization(sbi);
139
140 si->free_segs = free_segments(sbi);
141 si->free_secs = free_sections(sbi);
142 si->prefree_count = prefree_segments(sbi);
143 si->dirty_count = dirty_segments(sbi);
144 if (sbi->node_inode)
145 si->node_pages = NODE_MAPPING(sbi)->nrpages;
146 if (sbi->meta_inode)
147 si->meta_pages = META_MAPPING(sbi)->nrpages;
148 si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
149 si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
150 si->sits = MAIN_SEGS(sbi);
151 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
152 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
153 si->avail_nids = NM_I(sbi)->available_nids;
154 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
155 si->io_skip_bggc = sbi->io_skip_bggc;
156 si->other_skip_bggc = sbi->other_skip_bggc;
157 si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC];
158 si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC];
159 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
160 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
161 / 2;
162 si->util_valid = (int)(written_block_count(sbi) >>
163 sbi->log_blocks_per_seg)
164 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
165 / 2;
166 si->util_invalid = 50 - si->util_free - si->util_valid;
167 for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
168 struct curseg_info *curseg = CURSEG_I(sbi, i);
169 si->curseg[i] = curseg->segno;
170 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
171 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
172 }
173
174 for (i = META_CP; i < META_MAX; i++)
175 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
176
177 for (i = 0; i < NO_CHECK_TYPE; i++) {
178 si->dirty_seg[i] = 0;
179 si->full_seg[i] = 0;
180 si->valid_blks[i] = 0;
181 }
182
183 for (i = 0; i < MAIN_SEGS(sbi); i++) {
184 int blks = get_seg_entry(sbi, i)->valid_blocks;
185 int type = get_seg_entry(sbi, i)->type;
186
187 if (!blks)
188 continue;
189
190 if (blks == sbi->blocks_per_seg)
191 si->full_seg[type]++;
192 else
193 si->dirty_seg[type]++;
194 si->valid_blks[type] += blks;
195 }
196
197 for (i = 0; i < 2; i++) {
198 si->segment_count[i] = sbi->segment_count[i];
199 si->block_count[i] = sbi->block_count[i];
200 }
201
202 si->inplace_count = atomic_read(&sbi->inplace_count);
203 }
204
205 /*
206 * This function calculates memory footprint.
207 */
208 static void update_mem_info(struct f2fs_sb_info *sbi)
209 {
210 struct f2fs_stat_info *si = F2FS_STAT(sbi);
211 int i;
212
213 if (si->base_mem)
214 goto get_cache;
215
216 /* build stat */
217 si->base_mem = sizeof(struct f2fs_stat_info);
218
219 /* build superblock */
220 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
221 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
222 si->base_mem += sizeof(*sbi->ckpt);
223
224 /* build sm */
225 si->base_mem += sizeof(struct f2fs_sm_info);
226
227 /* build sit */
228 si->base_mem += sizeof(struct sit_info);
229 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
230 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
231 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
232 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
233 si->base_mem += SIT_VBLOCK_MAP_SIZE;
234 if (__is_large_section(sbi))
235 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
236 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
237
238 /* build free segmap */
239 si->base_mem += sizeof(struct free_segmap_info);
240 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
241 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
242
243 /* build curseg */
244 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
245 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
246
247 /* build dirty segmap */
248 si->base_mem += sizeof(struct dirty_seglist_info);
249 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
250 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
251
252 /* build nm */
253 si->base_mem += sizeof(struct f2fs_nm_info);
254 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
255 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
256 si->base_mem += NM_I(sbi)->nat_blocks *
257 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
258 si->base_mem += NM_I(sbi)->nat_blocks / 8;
259 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
260
261 get_cache:
262 si->cache_mem = 0;
263
264 /* build gc */
265 if (sbi->gc_thread)
266 si->cache_mem += sizeof(struct f2fs_gc_kthread);
267
268 /* build merge flush thread */
269 if (SM_I(sbi)->fcc_info)
270 si->cache_mem += sizeof(struct flush_cmd_control);
271 if (SM_I(sbi)->dcc_info) {
272 si->cache_mem += sizeof(struct discard_cmd_control);
273 si->cache_mem += sizeof(struct discard_cmd) *
274 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
275 }
276
277 /* free nids */
278 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
279 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
280 sizeof(struct free_nid);
281 si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
282 sizeof(struct nat_entry);
283 si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
284 sizeof(struct nat_entry_set);
285 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
286 for (i = 0; i < MAX_INO_ENTRY; i++)
287 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
288 si->cache_mem += atomic_read(&sbi->total_ext_tree) *
289 sizeof(struct extent_tree);
290 si->cache_mem += atomic_read(&sbi->total_ext_node) *
291 sizeof(struct extent_node);
292
293 si->page_mem = 0;
294 if (sbi->node_inode) {
295 unsigned npages = NODE_MAPPING(sbi)->nrpages;
296 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
297 }
298 if (sbi->meta_inode) {
299 unsigned npages = META_MAPPING(sbi)->nrpages;
300 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
301 }
302 }
303
304 static int stat_show(struct seq_file *s, void *v)
305 {
306 struct f2fs_stat_info *si;
307 int i = 0;
308 int j;
309
310 mutex_lock(&f2fs_stat_mutex);
311 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
312 update_general_status(si->sbi);
313
314 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
315 si->sbi->sb->s_bdev, i++,
316 f2fs_readonly(si->sbi->sb) ? "RO": "RW",
317 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
318 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good"));
319 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
320 si->sit_area_segs, si->nat_area_segs);
321 seq_printf(s, "[SSA: %d] [MAIN: %d",
322 si->ssa_area_segs, si->main_area_segs);
323 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
324 si->overp_segs, si->rsvd_segs);
325 seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",
326 ktime_get_boottime_seconds(),
327 SIT_I(si->sbi)->mounted_time);
328 if (test_opt(si->sbi, DISCARD))
329 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
330 si->utilization, si->valid_count, si->discard_blks);
331 else
332 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
333 si->utilization, si->valid_count);
334
335 seq_printf(s, " - Node: %u (Inode: %u, ",
336 si->valid_node_count, si->valid_inode_count);
337 seq_printf(s, "Other: %u)\n - Data: %u\n",
338 si->valid_node_count - si->valid_inode_count,
339 si->valid_count - si->valid_node_count);
340 seq_printf(s, " - Inline_xattr Inode: %u\n",
341 si->inline_xattr);
342 seq_printf(s, " - Inline_data Inode: %u\n",
343 si->inline_inode);
344 seq_printf(s, " - Inline_dentry Inode: %u\n",
345 si->inline_dir);
346 seq_printf(s, " - Compressed Inode: %u, Blocks: %llu\n",
347 si->compr_inode, si->compr_blocks);
348 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
349 si->orphans, si->append, si->update);
350 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
351 si->main_area_segs, si->main_area_sections,
352 si->main_area_zones);
353 seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n",
354 "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
355 seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n",
356 si->curseg[CURSEG_COLD_DATA],
357 si->cursec[CURSEG_COLD_DATA],
358 si->curzone[CURSEG_COLD_DATA],
359 si->dirty_seg[CURSEG_COLD_DATA],
360 si->full_seg[CURSEG_COLD_DATA],
361 si->valid_blks[CURSEG_COLD_DATA]);
362 seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n",
363 si->curseg[CURSEG_WARM_DATA],
364 si->cursec[CURSEG_WARM_DATA],
365 si->curzone[CURSEG_WARM_DATA],
366 si->dirty_seg[CURSEG_WARM_DATA],
367 si->full_seg[CURSEG_WARM_DATA],
368 si->valid_blks[CURSEG_WARM_DATA]);
369 seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n",
370 si->curseg[CURSEG_HOT_DATA],
371 si->cursec[CURSEG_HOT_DATA],
372 si->curzone[CURSEG_HOT_DATA],
373 si->dirty_seg[CURSEG_HOT_DATA],
374 si->full_seg[CURSEG_HOT_DATA],
375 si->valid_blks[CURSEG_HOT_DATA]);
376 seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n",
377 si->curseg[CURSEG_HOT_NODE],
378 si->cursec[CURSEG_HOT_NODE],
379 si->curzone[CURSEG_HOT_NODE],
380 si->dirty_seg[CURSEG_HOT_NODE],
381 si->full_seg[CURSEG_HOT_NODE],
382 si->valid_blks[CURSEG_HOT_NODE]);
383 seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n",
384 si->curseg[CURSEG_WARM_NODE],
385 si->cursec[CURSEG_WARM_NODE],
386 si->curzone[CURSEG_WARM_NODE],
387 si->dirty_seg[CURSEG_WARM_NODE],
388 si->full_seg[CURSEG_WARM_NODE],
389 si->valid_blks[CURSEG_WARM_NODE]);
390 seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
391 si->curseg[CURSEG_COLD_NODE],
392 si->cursec[CURSEG_COLD_NODE],
393 si->curzone[CURSEG_COLD_NODE],
394 si->dirty_seg[CURSEG_COLD_NODE],
395 si->full_seg[CURSEG_COLD_NODE],
396 si->valid_blks[CURSEG_COLD_NODE]);
397 seq_printf(s, " - Pinned file: %8d %8d %8d\n",
398 si->curseg[CURSEG_COLD_DATA_PINNED],
399 si->cursec[CURSEG_COLD_DATA_PINNED],
400 si->curzone[CURSEG_COLD_DATA_PINNED]);
401 seq_printf(s, " - ATGC data: %8d %8d %8d\n",
402 si->curseg[CURSEG_ALL_DATA_ATGC],
403 si->cursec[CURSEG_ALL_DATA_ATGC],
404 si->curzone[CURSEG_ALL_DATA_ATGC]);
405 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
406 si->main_area_segs - si->dirty_count -
407 si->prefree_count - si->free_segs,
408 si->dirty_count);
409 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
410 si->prefree_count, si->free_segs, si->free_secs);
411 seq_printf(s, "CP calls: %d (BG: %d)\n",
412 si->cp_count, si->bg_cp_count);
413 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
414 seq_printf(s, " - sit blocks : %u\n",
415 si->meta_count[META_SIT]);
416 seq_printf(s, " - nat blocks : %u\n",
417 si->meta_count[META_NAT]);
418 seq_printf(s, " - ssa blocks : %u\n",
419 si->meta_count[META_SSA]);
420 seq_printf(s, "GC calls: %d (BG: %d)\n",
421 si->call_count, si->bg_gc);
422 seq_printf(s, " - data segments : %d (%d)\n",
423 si->data_segs, si->bg_data_segs);
424 seq_printf(s, " - node segments : %d (%d)\n",
425 si->node_segs, si->bg_node_segs);
426 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
427 si->bg_data_blks + si->bg_node_blks);
428 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
429 si->bg_data_blks);
430 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
431 si->bg_node_blks);
432 seq_printf(s, "Skipped : atomic write %llu (%llu)\n",
433 si->skipped_atomic_files[BG_GC] +
434 si->skipped_atomic_files[FG_GC],
435 si->skipped_atomic_files[BG_GC]);
436 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
437 si->io_skip_bggc, si->other_skip_bggc);
438 seq_puts(s, "\nExtent Cache:\n");
439 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
440 si->hit_largest, si->hit_cached,
441 si->hit_rbtree);
442 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
443 !si->total_ext ? 0 :
444 div64_u64(si->hit_total * 100, si->total_ext),
445 si->hit_total, si->total_ext);
446 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
447 si->ext_tree, si->zombie_tree, si->ext_node);
448 seq_puts(s, "\nBalancing F2FS Async:\n");
449 seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
450 si->nr_dio_read, si->nr_dio_write);
451 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
452 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
453 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
454 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
455 si->nr_wb_cp_data, si->nr_wb_data,
456 si->nr_flushing, si->nr_flushed,
457 si->flush_list_empty,
458 si->nr_discarding, si->nr_discarded,
459 si->nr_discard_cmd, si->undiscard_blks);
460 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), "
461 "volatile IO: %4d (Max. %4d)\n",
462 si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
463 si->vw_cnt, si->max_vw_cnt);
464 seq_printf(s, " - nodes: %4d in %4d\n",
465 si->ndirty_node, si->node_pages);
466 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
467 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
468 seq_printf(s, " - datas: %4d in files:%4d\n",
469 si->ndirty_data, si->ndirty_files);
470 seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
471 si->ndirty_qdata, si->nquota_files);
472 seq_printf(s, " - meta: %4d in %4d\n",
473 si->ndirty_meta, si->meta_pages);
474 seq_printf(s, " - imeta: %4d\n",
475 si->ndirty_imeta);
476 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
477 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
478 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
479 si->free_nids, si->avail_nids, si->alloc_nids);
480 seq_puts(s, "\nDistribution of User Blocks:");
481 seq_puts(s, " [ valid | invalid | free ]\n");
482 seq_puts(s, " [");
483
484 for (j = 0; j < si->util_valid; j++)
485 seq_putc(s, '-');
486 seq_putc(s, '|');
487
488 for (j = 0; j < si->util_invalid; j++)
489 seq_putc(s, '-');
490 seq_putc(s, '|');
491
492 for (j = 0; j < si->util_free; j++)
493 seq_putc(s, '-');
494 seq_puts(s, "]\n\n");
495 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
496 seq_printf(s, "SSR: %u blocks in %u segments\n",
497 si->block_count[SSR], si->segment_count[SSR]);
498 seq_printf(s, "LFS: %u blocks in %u segments\n",
499 si->block_count[LFS], si->segment_count[LFS]);
500
501 /* segment usage info */
502 f2fs_update_sit_info(si->sbi);
503 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
504 si->bimodal, si->avg_vblocks);
505
506 /* memory footprint */
507 update_mem_info(si->sbi);
508 seq_printf(s, "\nMemory: %llu KB\n",
509 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
510 seq_printf(s, " - static: %llu KB\n",
511 si->base_mem >> 10);
512 seq_printf(s, " - cached: %llu KB\n",
513 si->cache_mem >> 10);
514 seq_printf(s, " - paged : %llu KB\n",
515 si->page_mem >> 10);
516 }
517 mutex_unlock(&f2fs_stat_mutex);
518 return 0;
519 }
520
521 DEFINE_SHOW_ATTRIBUTE(stat);
522 #endif
523
524 int f2fs_build_stats(struct f2fs_sb_info *sbi)
525 {
526 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
527 struct f2fs_stat_info *si;
528 int i;
529
530 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
531 if (!si)
532 return -ENOMEM;
533
534 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
535 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
536 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
537 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
538 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
539 si->main_area_sections = le32_to_cpu(raw_super->section_count);
540 si->main_area_zones = si->main_area_sections /
541 le32_to_cpu(raw_super->secs_per_zone);
542 si->sbi = sbi;
543 sbi->stat_info = si;
544
545 atomic64_set(&sbi->total_hit_ext, 0);
546 atomic64_set(&sbi->read_hit_rbtree, 0);
547 atomic64_set(&sbi->read_hit_largest, 0);
548 atomic64_set(&sbi->read_hit_cached, 0);
549
550 atomic_set(&sbi->inline_xattr, 0);
551 atomic_set(&sbi->inline_inode, 0);
552 atomic_set(&sbi->inline_dir, 0);
553 atomic_set(&sbi->compr_inode, 0);
554 atomic64_set(&sbi->compr_blocks, 0);
555 atomic_set(&sbi->inplace_count, 0);
556 for (i = META_CP; i < META_MAX; i++)
557 atomic_set(&sbi->meta_count[i], 0);
558
559 atomic_set(&sbi->vw_cnt, 0);
560 atomic_set(&sbi->max_aw_cnt, 0);
561 atomic_set(&sbi->max_vw_cnt, 0);
562
563 mutex_lock(&f2fs_stat_mutex);
564 list_add_tail(&si->stat_list, &f2fs_stat_list);
565 mutex_unlock(&f2fs_stat_mutex);
566
567 return 0;
568 }
569
570 void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
571 {
572 struct f2fs_stat_info *si = F2FS_STAT(sbi);
573
574 mutex_lock(&f2fs_stat_mutex);
575 list_del(&si->stat_list);
576 mutex_unlock(&f2fs_stat_mutex);
577
578 kfree(si);
579 }
580
581 void __init f2fs_create_root_stats(void)
582 {
583 #ifdef CONFIG_DEBUG_FS
584 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
585
586 debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL,
587 &stat_fops);
588 #endif
589 }
590
591 void f2fs_destroy_root_stats(void)
592 {
593 #ifdef CONFIG_DEBUG_FS
594 debugfs_remove_recursive(f2fs_debugfs_root);
595 f2fs_debugfs_root = NULL;
596 #endif
597 }
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