perf tools: Don't clone maps from parent when synthesizing forks
[linux/fpc-iii.git] / fs / f2fs / debug.c
blob139b4d5c83d5d0b0f7434b38bbb6105755eaffcb
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * f2fs debugging statistics
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 */
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>
18 #include "f2fs.h"
19 #include "node.h"
20 #include "segment.h"
21 #include "gc.h"
23 static LIST_HEAD(f2fs_stat_list);
24 static struct dentry *f2fs_debugfs_root;
25 static DEFINE_MUTEX(f2fs_stat_mutex);
27 static void update_general_status(struct f2fs_sb_info *sbi)
29 struct f2fs_stat_info *si = F2FS_STAT(sbi);
30 int i;
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_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
57 si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
58 si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
59 si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
60 si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
61 if (SM_I(sbi) && SM_I(sbi)->fcc_info) {
62 si->nr_flushed =
63 atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
64 si->nr_flushing =
65 atomic_read(&SM_I(sbi)->fcc_info->issing_flush);
66 si->flush_list_empty =
67 llist_empty(&SM_I(sbi)->fcc_info->issue_list);
69 if (SM_I(sbi) && SM_I(sbi)->dcc_info) {
70 si->nr_discarded =
71 atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
72 si->nr_discarding =
73 atomic_read(&SM_I(sbi)->dcc_info->issing_discard);
74 si->nr_discard_cmd =
75 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
76 si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
78 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
79 si->rsvd_segs = reserved_segments(sbi);
80 si->overp_segs = overprovision_segments(sbi);
81 si->valid_count = valid_user_blocks(sbi);
82 si->discard_blks = discard_blocks(sbi);
83 si->valid_node_count = valid_node_count(sbi);
84 si->valid_inode_count = valid_inode_count(sbi);
85 si->inline_xattr = atomic_read(&sbi->inline_xattr);
86 si->inline_inode = atomic_read(&sbi->inline_inode);
87 si->inline_dir = atomic_read(&sbi->inline_dir);
88 si->append = sbi->im[APPEND_INO].ino_num;
89 si->update = sbi->im[UPDATE_INO].ino_num;
90 si->orphans = sbi->im[ORPHAN_INO].ino_num;
91 si->utilization = utilization(sbi);
93 si->free_segs = free_segments(sbi);
94 si->free_secs = free_sections(sbi);
95 si->prefree_count = prefree_segments(sbi);
96 si->dirty_count = dirty_segments(sbi);
97 si->node_pages = NODE_MAPPING(sbi)->nrpages;
98 si->meta_pages = META_MAPPING(sbi)->nrpages;
99 si->nats = NM_I(sbi)->nat_cnt;
100 si->dirty_nats = NM_I(sbi)->dirty_nat_cnt;
101 si->sits = MAIN_SEGS(sbi);
102 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
103 si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
104 si->avail_nids = NM_I(sbi)->available_nids;
105 si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
106 si->bg_gc = sbi->bg_gc;
107 si->io_skip_bggc = sbi->io_skip_bggc;
108 si->other_skip_bggc = sbi->other_skip_bggc;
109 si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC];
110 si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC];
111 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
112 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
113 / 2;
114 si->util_valid = (int)(written_block_count(sbi) >>
115 sbi->log_blocks_per_seg)
116 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
117 / 2;
118 si->util_invalid = 50 - si->util_free - si->util_valid;
119 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) {
120 struct curseg_info *curseg = CURSEG_I(sbi, i);
121 si->curseg[i] = curseg->segno;
122 si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
123 si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
126 for (i = META_CP; i < META_MAX; i++)
127 si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
129 for (i = 0; i < 2; i++) {
130 si->segment_count[i] = sbi->segment_count[i];
131 si->block_count[i] = sbi->block_count[i];
134 si->inplace_count = atomic_read(&sbi->inplace_count);
138 * This function calculates BDF of every segments
140 static void update_sit_info(struct f2fs_sb_info *sbi)
142 struct f2fs_stat_info *si = F2FS_STAT(sbi);
143 unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
144 unsigned long long bimodal, dist;
145 unsigned int segno, vblocks;
146 int ndirty = 0;
148 bimodal = 0;
149 total_vblocks = 0;
150 blks_per_sec = BLKS_PER_SEC(sbi);
151 hblks_per_sec = blks_per_sec / 2;
152 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
153 vblocks = get_valid_blocks(sbi, segno, true);
154 dist = abs(vblocks - hblks_per_sec);
155 bimodal += dist * dist;
157 if (vblocks > 0 && vblocks < blks_per_sec) {
158 total_vblocks += vblocks;
159 ndirty++;
162 dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
163 si->bimodal = div64_u64(bimodal, dist);
164 if (si->dirty_count)
165 si->avg_vblocks = div_u64(total_vblocks, ndirty);
166 else
167 si->avg_vblocks = 0;
171 * This function calculates memory footprint.
173 static void update_mem_info(struct f2fs_sb_info *sbi)
175 struct f2fs_stat_info *si = F2FS_STAT(sbi);
176 unsigned npages;
177 int i;
179 if (si->base_mem)
180 goto get_cache;
182 /* build stat */
183 si->base_mem = sizeof(struct f2fs_stat_info);
185 /* build superblock */
186 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
187 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
188 si->base_mem += sizeof(*sbi->ckpt);
190 /* build sm */
191 si->base_mem += sizeof(struct f2fs_sm_info);
193 /* build sit */
194 si->base_mem += sizeof(struct sit_info);
195 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
196 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
197 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
198 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
199 si->base_mem += SIT_VBLOCK_MAP_SIZE;
200 if (sbi->segs_per_sec > 1)
201 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
202 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
204 /* build free segmap */
205 si->base_mem += sizeof(struct free_segmap_info);
206 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
207 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
209 /* build curseg */
210 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
211 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
213 /* build dirty segmap */
214 si->base_mem += sizeof(struct dirty_seglist_info);
215 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
216 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
218 /* build nm */
219 si->base_mem += sizeof(struct f2fs_nm_info);
220 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
221 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
222 si->base_mem += NM_I(sbi)->nat_blocks *
223 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
224 si->base_mem += NM_I(sbi)->nat_blocks / 8;
225 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
227 get_cache:
228 si->cache_mem = 0;
230 /* build gc */
231 if (sbi->gc_thread)
232 si->cache_mem += sizeof(struct f2fs_gc_kthread);
234 /* build merge flush thread */
235 if (SM_I(sbi)->fcc_info)
236 si->cache_mem += sizeof(struct flush_cmd_control);
237 if (SM_I(sbi)->dcc_info) {
238 si->cache_mem += sizeof(struct discard_cmd_control);
239 si->cache_mem += sizeof(struct discard_cmd) *
240 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
243 /* free nids */
244 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
245 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
246 sizeof(struct free_nid);
247 si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry);
248 si->cache_mem += NM_I(sbi)->dirty_nat_cnt *
249 sizeof(struct nat_entry_set);
250 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
251 for (i = 0; i < MAX_INO_ENTRY; i++)
252 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
253 si->cache_mem += atomic_read(&sbi->total_ext_tree) *
254 sizeof(struct extent_tree);
255 si->cache_mem += atomic_read(&sbi->total_ext_node) *
256 sizeof(struct extent_node);
258 si->page_mem = 0;
259 npages = NODE_MAPPING(sbi)->nrpages;
260 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
261 npages = META_MAPPING(sbi)->nrpages;
262 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
265 static int stat_show(struct seq_file *s, void *v)
267 struct f2fs_stat_info *si;
268 int i = 0;
269 int j;
271 mutex_lock(&f2fs_stat_mutex);
272 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
273 update_general_status(si->sbi);
275 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
276 si->sbi->sb->s_bdev, i++,
277 f2fs_readonly(si->sbi->sb) ? "RO": "RW",
278 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
279 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good"));
280 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
281 si->sit_area_segs, si->nat_area_segs);
282 seq_printf(s, "[SSA: %d] [MAIN: %d",
283 si->ssa_area_segs, si->main_area_segs);
284 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
285 si->overp_segs, si->rsvd_segs);
286 if (test_opt(si->sbi, DISCARD))
287 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
288 si->utilization, si->valid_count, si->discard_blks);
289 else
290 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
291 si->utilization, si->valid_count);
293 seq_printf(s, " - Node: %u (Inode: %u, ",
294 si->valid_node_count, si->valid_inode_count);
295 seq_printf(s, "Other: %u)\n - Data: %u\n",
296 si->valid_node_count - si->valid_inode_count,
297 si->valid_count - si->valid_node_count);
298 seq_printf(s, " - Inline_xattr Inode: %u\n",
299 si->inline_xattr);
300 seq_printf(s, " - Inline_data Inode: %u\n",
301 si->inline_inode);
302 seq_printf(s, " - Inline_dentry Inode: %u\n",
303 si->inline_dir);
304 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
305 si->orphans, si->append, si->update);
306 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
307 si->main_area_segs, si->main_area_sections,
308 si->main_area_zones);
309 seq_printf(s, " - COLD data: %d, %d, %d\n",
310 si->curseg[CURSEG_COLD_DATA],
311 si->cursec[CURSEG_COLD_DATA],
312 si->curzone[CURSEG_COLD_DATA]);
313 seq_printf(s, " - WARM data: %d, %d, %d\n",
314 si->curseg[CURSEG_WARM_DATA],
315 si->cursec[CURSEG_WARM_DATA],
316 si->curzone[CURSEG_WARM_DATA]);
317 seq_printf(s, " - HOT data: %d, %d, %d\n",
318 si->curseg[CURSEG_HOT_DATA],
319 si->cursec[CURSEG_HOT_DATA],
320 si->curzone[CURSEG_HOT_DATA]);
321 seq_printf(s, " - Dir dnode: %d, %d, %d\n",
322 si->curseg[CURSEG_HOT_NODE],
323 si->cursec[CURSEG_HOT_NODE],
324 si->curzone[CURSEG_HOT_NODE]);
325 seq_printf(s, " - File dnode: %d, %d, %d\n",
326 si->curseg[CURSEG_WARM_NODE],
327 si->cursec[CURSEG_WARM_NODE],
328 si->curzone[CURSEG_WARM_NODE]);
329 seq_printf(s, " - Indir nodes: %d, %d, %d\n",
330 si->curseg[CURSEG_COLD_NODE],
331 si->cursec[CURSEG_COLD_NODE],
332 si->curzone[CURSEG_COLD_NODE]);
333 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
334 si->main_area_segs - si->dirty_count -
335 si->prefree_count - si->free_segs,
336 si->dirty_count);
337 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
338 si->prefree_count, si->free_segs, si->free_secs);
339 seq_printf(s, "CP calls: %d (BG: %d)\n",
340 si->cp_count, si->bg_cp_count);
341 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
342 seq_printf(s, " - sit blocks : %u\n",
343 si->meta_count[META_SIT]);
344 seq_printf(s, " - nat blocks : %u\n",
345 si->meta_count[META_NAT]);
346 seq_printf(s, " - ssa blocks : %u\n",
347 si->meta_count[META_SSA]);
348 seq_printf(s, "GC calls: %d (BG: %d)\n",
349 si->call_count, si->bg_gc);
350 seq_printf(s, " - data segments : %d (%d)\n",
351 si->data_segs, si->bg_data_segs);
352 seq_printf(s, " - node segments : %d (%d)\n",
353 si->node_segs, si->bg_node_segs);
354 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
355 si->bg_data_blks + si->bg_node_blks);
356 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
357 si->bg_data_blks);
358 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
359 si->bg_node_blks);
360 seq_printf(s, "Skipped : atomic write %llu (%llu)\n",
361 si->skipped_atomic_files[BG_GC] +
362 si->skipped_atomic_files[FG_GC],
363 si->skipped_atomic_files[BG_GC]);
364 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
365 si->io_skip_bggc, si->other_skip_bggc);
366 seq_puts(s, "\nExtent Cache:\n");
367 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
368 si->hit_largest, si->hit_cached,
369 si->hit_rbtree);
370 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
371 !si->total_ext ? 0 :
372 div64_u64(si->hit_total * 100, si->total_ext),
373 si->hit_total, si->total_ext);
374 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
375 si->ext_tree, si->zombie_tree, si->ext_node);
376 seq_puts(s, "\nBalancing F2FS Async:\n");
377 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
378 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
379 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
380 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
381 si->nr_wb_cp_data, si->nr_wb_data,
382 si->nr_flushing, si->nr_flushed,
383 si->flush_list_empty,
384 si->nr_discarding, si->nr_discarded,
385 si->nr_discard_cmd, si->undiscard_blks);
386 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), "
387 "volatile IO: %4d (Max. %4d)\n",
388 si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
389 si->vw_cnt, si->max_vw_cnt);
390 seq_printf(s, " - nodes: %4d in %4d\n",
391 si->ndirty_node, si->node_pages);
392 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
393 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
394 seq_printf(s, " - datas: %4d in files:%4d\n",
395 si->ndirty_data, si->ndirty_files);
396 seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
397 si->ndirty_qdata, si->nquota_files);
398 seq_printf(s, " - meta: %4d in %4d\n",
399 si->ndirty_meta, si->meta_pages);
400 seq_printf(s, " - imeta: %4d\n",
401 si->ndirty_imeta);
402 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
403 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
404 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
405 si->free_nids, si->avail_nids, si->alloc_nids);
406 seq_puts(s, "\nDistribution of User Blocks:");
407 seq_puts(s, " [ valid | invalid | free ]\n");
408 seq_puts(s, " [");
410 for (j = 0; j < si->util_valid; j++)
411 seq_putc(s, '-');
412 seq_putc(s, '|');
414 for (j = 0; j < si->util_invalid; j++)
415 seq_putc(s, '-');
416 seq_putc(s, '|');
418 for (j = 0; j < si->util_free; j++)
419 seq_putc(s, '-');
420 seq_puts(s, "]\n\n");
421 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
422 seq_printf(s, "SSR: %u blocks in %u segments\n",
423 si->block_count[SSR], si->segment_count[SSR]);
424 seq_printf(s, "LFS: %u blocks in %u segments\n",
425 si->block_count[LFS], si->segment_count[LFS]);
427 /* segment usage info */
428 update_sit_info(si->sbi);
429 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
430 si->bimodal, si->avg_vblocks);
432 /* memory footprint */
433 update_mem_info(si->sbi);
434 seq_printf(s, "\nMemory: %llu KB\n",
435 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
436 seq_printf(s, " - static: %llu KB\n",
437 si->base_mem >> 10);
438 seq_printf(s, " - cached: %llu KB\n",
439 si->cache_mem >> 10);
440 seq_printf(s, " - paged : %llu KB\n",
441 si->page_mem >> 10);
443 mutex_unlock(&f2fs_stat_mutex);
444 return 0;
447 static int stat_open(struct inode *inode, struct file *file)
449 return single_open(file, stat_show, inode->i_private);
452 static const struct file_operations stat_fops = {
453 .owner = THIS_MODULE,
454 .open = stat_open,
455 .read = seq_read,
456 .llseek = seq_lseek,
457 .release = single_release,
460 int f2fs_build_stats(struct f2fs_sb_info *sbi)
462 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
463 struct f2fs_stat_info *si;
464 int i;
466 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
467 if (!si)
468 return -ENOMEM;
470 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
471 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
472 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
473 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
474 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
475 si->main_area_sections = le32_to_cpu(raw_super->section_count);
476 si->main_area_zones = si->main_area_sections /
477 le32_to_cpu(raw_super->secs_per_zone);
478 si->sbi = sbi;
479 sbi->stat_info = si;
481 atomic64_set(&sbi->total_hit_ext, 0);
482 atomic64_set(&sbi->read_hit_rbtree, 0);
483 atomic64_set(&sbi->read_hit_largest, 0);
484 atomic64_set(&sbi->read_hit_cached, 0);
486 atomic_set(&sbi->inline_xattr, 0);
487 atomic_set(&sbi->inline_inode, 0);
488 atomic_set(&sbi->inline_dir, 0);
489 atomic_set(&sbi->inplace_count, 0);
490 for (i = META_CP; i < META_MAX; i++)
491 atomic_set(&sbi->meta_count[i], 0);
493 atomic_set(&sbi->aw_cnt, 0);
494 atomic_set(&sbi->vw_cnt, 0);
495 atomic_set(&sbi->max_aw_cnt, 0);
496 atomic_set(&sbi->max_vw_cnt, 0);
498 mutex_lock(&f2fs_stat_mutex);
499 list_add_tail(&si->stat_list, &f2fs_stat_list);
500 mutex_unlock(&f2fs_stat_mutex);
502 return 0;
505 void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
507 struct f2fs_stat_info *si = F2FS_STAT(sbi);
509 mutex_lock(&f2fs_stat_mutex);
510 list_del(&si->stat_list);
511 mutex_unlock(&f2fs_stat_mutex);
513 kfree(si);
516 int __init f2fs_create_root_stats(void)
518 struct dentry *file;
520 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
521 if (!f2fs_debugfs_root)
522 return -ENOMEM;
524 file = debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root,
525 NULL, &stat_fops);
526 if (!file) {
527 debugfs_remove(f2fs_debugfs_root);
528 f2fs_debugfs_root = NULL;
529 return -ENOMEM;
532 return 0;
535 void f2fs_destroy_root_stats(void)
537 if (!f2fs_debugfs_root)
538 return;
540 debugfs_remove_recursive(f2fs_debugfs_root);
541 f2fs_debugfs_root = NULL;