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Merge branches 'for-5.1/upstream-fixes', 'for-5.2/core', 'for-5.2/ish', 'for-5.2...
[mirror_ubuntu-kernels.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 struct dentry *f2fs_debugfs_root;
25 static DEFINE_MUTEX(f2fs_stat_mutex);
26
27 static void update_general_status(struct f2fs_sb_info *sbi)
28 {
29 struct f2fs_stat_info *si = F2FS_STAT(sbi);
30 int i;
31
32 /* validation check of the segment numbers */
33 si->hit_largest = atomic64_read(&sbi->read_hit_largest);
34 si->hit_cached = atomic64_read(&sbi->read_hit_cached);
35 si->hit_rbtree = atomic64_read(&sbi->read_hit_rbtree);
36 si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree;
37 si->total_ext = atomic64_read(&sbi->total_hit_ext);
38 si->ext_tree = atomic_read(&sbi->total_ext_tree);
39 si->zombie_tree = atomic_read(&sbi->total_zombie_tree);
40 si->ext_node = atomic_read(&sbi->total_ext_node);
41 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
42 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
43 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
44 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
45 si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
46 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
47 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
48 si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
49 si->nquota_files = sbi->nquota_files;
50 si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
51 si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
52 si->aw_cnt = atomic_read(&sbi->aw_cnt);
53 si->vw_cnt = atomic_read(&sbi->vw_cnt);
54 si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
55 si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt);
56 si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
57 si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
58 si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
59 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
60 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
61 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
62 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
63 if (SM_I(sbi) && SM_I(sbi)->fcc_info) {
64 si->nr_flushed =
65 atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
66 si->nr_flushing =
67 atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
68 si->flush_list_empty =
69 llist_empty(&SM_I(sbi)->fcc_info->issue_list);
70 }
71 if (SM_I(sbi) && SM_I(sbi)->dcc_info) {
72 si->nr_discarded =
73 atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
74 si->nr_discarding =
75 atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
76 si->nr_discard_cmd =
77 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
78 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
79 }
80 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
81 si->rsvd_segs = reserved_segments(sbi);
82 si->overp_segs = overprovision_segments(sbi);
83 si->valid_count = valid_user_blocks(sbi);
84 si->discard_blks = discard_blocks(sbi);
85 si->valid_node_count = valid_node_count(sbi);
86 si->valid_inode_count = valid_inode_count(sbi);
87 si->inline_xattr = atomic_read(&sbi->inline_xattr);
88 si->inline_inode = atomic_read(&sbi->inline_inode);
89 si->inline_dir = atomic_read(&sbi->inline_dir);
90 si->append = sbi->im[APPEND_INO].ino_num;
91 si->update = sbi->im[UPDATE_INO].ino_num;
92 si->orphans = sbi->im[ORPHAN_INO].ino_num;
93 si->utilization = utilization(sbi);
94
95 si->free_segs = free_segments(sbi);
96 si->free_secs = free_sections(sbi);
97 si->prefree_count = prefree_segments(sbi);
98 si->dirty_count = dirty_segments(sbi);
99 if (sbi->node_inode)
100 si->node_pages = NODE_MAPPING(sbi)->nrpages;
101 if (sbi->meta_inode)
102 si->meta_pages = META_MAPPING(sbi)->nrpages;
103 si->nats = NM_I(sbi)->nat_cnt;
104 si->dirty_nats = NM_I(sbi)->dirty_nat_cnt;
105 si->sits = MAIN_SEGS(sbi);
106 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
107 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
108 si->avail_nids = NM_I(sbi)->available_nids;
109 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
110 si->bg_gc = sbi->bg_gc;
111 si->io_skip_bggc = sbi->io_skip_bggc;
112 si->other_skip_bggc = sbi->other_skip_bggc;
113 si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC];
114 si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC];
115 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
116 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
117 / 2;
118 si->util_valid = (int)(written_block_count(sbi) >>
119 sbi->log_blocks_per_seg)
120 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
121 / 2;
122 si->util_invalid = 50 - si->util_free - si->util_valid;
123 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) {
124 struct curseg_info *curseg = CURSEG_I(sbi, i);
125 si->curseg[i] = curseg->segno;
126 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
127 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
128 }
129
130 for (i = META_CP; i < META_MAX; i++)
131 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
132
133 for (i = 0; i < 2; i++) {
134 si->segment_count[i] = sbi->segment_count[i];
135 si->block_count[i] = sbi->block_count[i];
136 }
137
138 si->inplace_count = atomic_read(&sbi->inplace_count);
139 }
140
141 /*
142 * This function calculates BDF of every segments
143 */
144 static void update_sit_info(struct f2fs_sb_info *sbi)
145 {
146 struct f2fs_stat_info *si = F2FS_STAT(sbi);
147 unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
148 unsigned long long bimodal, dist;
149 unsigned int segno, vblocks;
150 int ndirty = 0;
151
152 bimodal = 0;
153 total_vblocks = 0;
154 blks_per_sec = BLKS_PER_SEC(sbi);
155 hblks_per_sec = blks_per_sec / 2;
156 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
157 vblocks = get_valid_blocks(sbi, segno, true);
158 dist = abs(vblocks - hblks_per_sec);
159 bimodal += dist * dist;
160
161 if (vblocks > 0 && vblocks < blks_per_sec) {
162 total_vblocks += vblocks;
163 ndirty++;
164 }
165 }
166 dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
167 si->bimodal = div64_u64(bimodal, dist);
168 if (si->dirty_count)
169 si->avg_vblocks = div_u64(total_vblocks, ndirty);
170 else
171 si->avg_vblocks = 0;
172 }
173
174 /*
175 * This function calculates memory footprint.
176 */
177 static void update_mem_info(struct f2fs_sb_info *sbi)
178 {
179 struct f2fs_stat_info *si = F2FS_STAT(sbi);
180 int i;
181
182 if (si->base_mem)
183 goto get_cache;
184
185 /* build stat */
186 si->base_mem = sizeof(struct f2fs_stat_info);
187
188 /* build superblock */
189 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
190 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
191 si->base_mem += sizeof(*sbi->ckpt);
192
193 /* build sm */
194 si->base_mem += sizeof(struct f2fs_sm_info);
195
196 /* build sit */
197 si->base_mem += sizeof(struct sit_info);
198 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
199 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
200 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
201 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
202 si->base_mem += SIT_VBLOCK_MAP_SIZE;
203 if (__is_large_section(sbi))
204 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
205 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
206
207 /* build free segmap */
208 si->base_mem += sizeof(struct free_segmap_info);
209 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
210 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
211
212 /* build curseg */
213 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
214 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
215
216 /* build dirty segmap */
217 si->base_mem += sizeof(struct dirty_seglist_info);
218 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
219 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
220
221 /* build nm */
222 si->base_mem += sizeof(struct f2fs_nm_info);
223 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
224 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
225 si->base_mem += NM_I(sbi)->nat_blocks *
226 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
227 si->base_mem += NM_I(sbi)->nat_blocks / 8;
228 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
229
230 get_cache:
231 si->cache_mem = 0;
232
233 /* build gc */
234 if (sbi->gc_thread)
235 si->cache_mem += sizeof(struct f2fs_gc_kthread);
236
237 /* build merge flush thread */
238 if (SM_I(sbi)->fcc_info)
239 si->cache_mem += sizeof(struct flush_cmd_control);
240 if (SM_I(sbi)->dcc_info) {
241 si->cache_mem += sizeof(struct discard_cmd_control);
242 si->cache_mem += sizeof(struct discard_cmd) *
243 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
244 }
245
246 /* free nids */
247 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
248 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
249 sizeof(struct free_nid);
250 si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry);
251 si->cache_mem += NM_I(sbi)->dirty_nat_cnt *
252 sizeof(struct nat_entry_set);
253 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
254 for (i = 0; i < MAX_INO_ENTRY; i++)
255 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
256 si->cache_mem += atomic_read(&sbi->total_ext_tree) *
257 sizeof(struct extent_tree);
258 si->cache_mem += atomic_read(&sbi->total_ext_node) *
259 sizeof(struct extent_node);
260
261 si->page_mem = 0;
262 if (sbi->node_inode) {
263 unsigned npages = NODE_MAPPING(sbi)->nrpages;
264 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
265 }
266 if (sbi->meta_inode) {
267 unsigned npages = META_MAPPING(sbi)->nrpages;
268 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
269 }
270 }
271
272 static int stat_show(struct seq_file *s, void *v)
273 {
274 struct f2fs_stat_info *si;
275 int i = 0;
276 int j;
277
278 mutex_lock(&f2fs_stat_mutex);
279 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
280 update_general_status(si->sbi);
281
282 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
283 si->sbi->sb->s_bdev, i++,
284 f2fs_readonly(si->sbi->sb) ? "RO": "RW",
285 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
286 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good"));
287 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
288 si->sit_area_segs, si->nat_area_segs);
289 seq_printf(s, "[SSA: %d] [MAIN: %d",
290 si->ssa_area_segs, si->main_area_segs);
291 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
292 si->overp_segs, si->rsvd_segs);
293 if (test_opt(si->sbi, DISCARD))
294 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
295 si->utilization, si->valid_count, si->discard_blks);
296 else
297 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
298 si->utilization, si->valid_count);
299
300 seq_printf(s, " - Node: %u (Inode: %u, ",
301 si->valid_node_count, si->valid_inode_count);
302 seq_printf(s, "Other: %u)\n - Data: %u\n",
303 si->valid_node_count - si->valid_inode_count,
304 si->valid_count - si->valid_node_count);
305 seq_printf(s, " - Inline_xattr Inode: %u\n",
306 si->inline_xattr);
307 seq_printf(s, " - Inline_data Inode: %u\n",
308 si->inline_inode);
309 seq_printf(s, " - Inline_dentry Inode: %u\n",
310 si->inline_dir);
311 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
312 si->orphans, si->append, si->update);
313 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
314 si->main_area_segs, si->main_area_sections,
315 si->main_area_zones);
316 seq_printf(s, " - COLD data: %d, %d, %d\n",
317 si->curseg[CURSEG_COLD_DATA],
318 si->cursec[CURSEG_COLD_DATA],
319 si->curzone[CURSEG_COLD_DATA]);
320 seq_printf(s, " - WARM data: %d, %d, %d\n",
321 si->curseg[CURSEG_WARM_DATA],
322 si->cursec[CURSEG_WARM_DATA],
323 si->curzone[CURSEG_WARM_DATA]);
324 seq_printf(s, " - HOT data: %d, %d, %d\n",
325 si->curseg[CURSEG_HOT_DATA],
326 si->cursec[CURSEG_HOT_DATA],
327 si->curzone[CURSEG_HOT_DATA]);
328 seq_printf(s, " - Dir dnode: %d, %d, %d\n",
329 si->curseg[CURSEG_HOT_NODE],
330 si->cursec[CURSEG_HOT_NODE],
331 si->curzone[CURSEG_HOT_NODE]);
332 seq_printf(s, " - File dnode: %d, %d, %d\n",
333 si->curseg[CURSEG_WARM_NODE],
334 si->cursec[CURSEG_WARM_NODE],
335 si->curzone[CURSEG_WARM_NODE]);
336 seq_printf(s, " - Indir nodes: %d, %d, %d\n",
337 si->curseg[CURSEG_COLD_NODE],
338 si->cursec[CURSEG_COLD_NODE],
339 si->curzone[CURSEG_COLD_NODE]);
340 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
341 si->main_area_segs - si->dirty_count -
342 si->prefree_count - si->free_segs,
343 si->dirty_count);
344 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
345 si->prefree_count, si->free_segs, si->free_secs);
346 seq_printf(s, "CP calls: %d (BG: %d)\n",
347 si->cp_count, si->bg_cp_count);
348 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
349 seq_printf(s, " - sit blocks : %u\n",
350 si->meta_count[META_SIT]);
351 seq_printf(s, " - nat blocks : %u\n",
352 si->meta_count[META_NAT]);
353 seq_printf(s, " - ssa blocks : %u\n",
354 si->meta_count[META_SSA]);
355 seq_printf(s, "GC calls: %d (BG: %d)\n",
356 si->call_count, si->bg_gc);
357 seq_printf(s, " - data segments : %d (%d)\n",
358 si->data_segs, si->bg_data_segs);
359 seq_printf(s, " - node segments : %d (%d)\n",
360 si->node_segs, si->bg_node_segs);
361 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
362 si->bg_data_blks + si->bg_node_blks);
363 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
364 si->bg_data_blks);
365 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
366 si->bg_node_blks);
367 seq_printf(s, "Skipped : atomic write %llu (%llu)\n",
368 si->skipped_atomic_files[BG_GC] +
369 si->skipped_atomic_files[FG_GC],
370 si->skipped_atomic_files[BG_GC]);
371 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
372 si->io_skip_bggc, si->other_skip_bggc);
373 seq_puts(s, "\nExtent Cache:\n");
374 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
375 si->hit_largest, si->hit_cached,
376 si->hit_rbtree);
377 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
378 !si->total_ext ? 0 :
379 div64_u64(si->hit_total * 100, si->total_ext),
380 si->hit_total, si->total_ext);
381 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
382 si->ext_tree, si->zombie_tree, si->ext_node);
383 seq_puts(s, "\nBalancing F2FS Async:\n");
384 seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
385 si->nr_dio_read, si->nr_dio_write);
386 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
387 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
388 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
389 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
390 si->nr_wb_cp_data, si->nr_wb_data,
391 si->nr_flushing, si->nr_flushed,
392 si->flush_list_empty,
393 si->nr_discarding, si->nr_discarded,
394 si->nr_discard_cmd, si->undiscard_blks);
395 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), "
396 "volatile IO: %4d (Max. %4d)\n",
397 si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
398 si->vw_cnt, si->max_vw_cnt);
399 seq_printf(s, " - nodes: %4d in %4d\n",
400 si->ndirty_node, si->node_pages);
401 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
402 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
403 seq_printf(s, " - datas: %4d in files:%4d\n",
404 si->ndirty_data, si->ndirty_files);
405 seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
406 si->ndirty_qdata, si->nquota_files);
407 seq_printf(s, " - meta: %4d in %4d\n",
408 si->ndirty_meta, si->meta_pages);
409 seq_printf(s, " - imeta: %4d\n",
410 si->ndirty_imeta);
411 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
412 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
413 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
414 si->free_nids, si->avail_nids, si->alloc_nids);
415 seq_puts(s, "\nDistribution of User Blocks:");
416 seq_puts(s, " [ valid | invalid | free ]\n");
417 seq_puts(s, " [");
418
419 for (j = 0; j < si->util_valid; j++)
420 seq_putc(s, '-');
421 seq_putc(s, '|');
422
423 for (j = 0; j < si->util_invalid; j++)
424 seq_putc(s, '-');
425 seq_putc(s, '|');
426
427 for (j = 0; j < si->util_free; j++)
428 seq_putc(s, '-');
429 seq_puts(s, "]\n\n");
430 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
431 seq_printf(s, "SSR: %u blocks in %u segments\n",
432 si->block_count[SSR], si->segment_count[SSR]);
433 seq_printf(s, "LFS: %u blocks in %u segments\n",
434 si->block_count[LFS], si->segment_count[LFS]);
435
436 /* segment usage info */
437 update_sit_info(si->sbi);
438 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
439 si->bimodal, si->avg_vblocks);
440
441 /* memory footprint */
442 update_mem_info(si->sbi);
443 seq_printf(s, "\nMemory: %llu KB\n",
444 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
445 seq_printf(s, " - static: %llu KB\n",
446 si->base_mem >> 10);
447 seq_printf(s, " - cached: %llu KB\n",
448 si->cache_mem >> 10);
449 seq_printf(s, " - paged : %llu KB\n",
450 si->page_mem >> 10);
451 }
452 mutex_unlock(&f2fs_stat_mutex);
453 return 0;
454 }
455
456 DEFINE_SHOW_ATTRIBUTE(stat);
457
458 int f2fs_build_stats(struct f2fs_sb_info *sbi)
459 {
460 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
461 struct f2fs_stat_info *si;
462 int i;
463
464 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
465 if (!si)
466 return -ENOMEM;
467
468 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
469 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
470 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
471 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
472 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
473 si->main_area_sections = le32_to_cpu(raw_super->section_count);
474 si->main_area_zones = si->main_area_sections /
475 le32_to_cpu(raw_super->secs_per_zone);
476 si->sbi = sbi;
477 sbi->stat_info = si;
478
479 atomic64_set(&sbi->total_hit_ext, 0);
480 atomic64_set(&sbi->read_hit_rbtree, 0);
481 atomic64_set(&sbi->read_hit_largest, 0);
482 atomic64_set(&sbi->read_hit_cached, 0);
483
484 atomic_set(&sbi->inline_xattr, 0);
485 atomic_set(&sbi->inline_inode, 0);
486 atomic_set(&sbi->inline_dir, 0);
487 atomic_set(&sbi->inplace_count, 0);
488 for (i = META_CP; i < META_MAX; i++)
489 atomic_set(&sbi->meta_count[i], 0);
490
491 atomic_set(&sbi->aw_cnt, 0);
492 atomic_set(&sbi->vw_cnt, 0);
493 atomic_set(&sbi->max_aw_cnt, 0);
494 atomic_set(&sbi->max_vw_cnt, 0);
495
496 mutex_lock(&f2fs_stat_mutex);
497 list_add_tail(&si->stat_list, &f2fs_stat_list);
498 mutex_unlock(&f2fs_stat_mutex);
499
500 return 0;
501 }
502
503 void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
504 {
505 struct f2fs_stat_info *si = F2FS_STAT(sbi);
506
507 mutex_lock(&f2fs_stat_mutex);
508 list_del(&si->stat_list);
509 mutex_unlock(&f2fs_stat_mutex);
510
511 kvfree(si);
512 }
513
514 void __init f2fs_create_root_stats(void)
515 {
516 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
517
518 debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL,
519 &stat_fops);
520 }
521
522 void f2fs_destroy_root_stats(void)
523 {
524 debugfs_remove_recursive(f2fs_debugfs_root);
525 f2fs_debugfs_root = NULL;
526 }
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