Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
902829aa GKH |
2 | * f2fs debugging statistics |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * Copyright (c) 2012 Linux Foundation | |
7 | * Copyright (c) 2012 Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/fs.h> | |
15 | #include <linux/backing-dev.h> | |
902829aa GKH |
16 | #include <linux/f2fs_fs.h> |
17 | #include <linux/blkdev.h> | |
18 | #include <linux/debugfs.h> | |
19 | #include <linux/seq_file.h> | |
20 | ||
21 | #include "f2fs.h" | |
22 | #include "node.h" | |
23 | #include "segment.h" | |
24 | #include "gc.h" | |
25 | ||
26 | static LIST_HEAD(f2fs_stat_list); | |
40e1ebe9 | 27 | static struct dentry *f2fs_debugfs_root; |
66af62ce | 28 | static DEFINE_MUTEX(f2fs_stat_mutex); |
902829aa | 29 | |
25ca923b | 30 | static void update_general_status(struct f2fs_sb_info *sbi) |
902829aa | 31 | { |
963d4f7d | 32 | struct f2fs_stat_info *si = F2FS_STAT(sbi); |
902829aa GKH |
33 | int i; |
34 | ||
e1c42045 | 35 | /* validation check of the segment numbers */ |
5b7ee374 CY |
36 | si->hit_largest = atomic64_read(&sbi->read_hit_largest); |
37 | si->hit_cached = atomic64_read(&sbi->read_hit_cached); | |
38 | si->hit_rbtree = atomic64_read(&sbi->read_hit_rbtree); | |
029e13cc | 39 | si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree; |
5b7ee374 | 40 | si->total_ext = atomic64_read(&sbi->total_hit_ext); |
7441ccef | 41 | si->ext_tree = atomic_read(&sbi->total_ext_tree); |
c00ba554 | 42 | si->zombie_tree = atomic_read(&sbi->total_zombie_tree); |
4bf6fd9f | 43 | si->ext_node = atomic_read(&sbi->total_ext_node); |
902829aa GKH |
44 | si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES); |
45 | si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS); | |
902829aa | 46 | si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META); |
33fbd510 | 47 | si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA); |
5bc994a0 | 48 | si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA); |
33fbd510 CY |
49 | si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE]; |
50 | si->ndirty_files = sbi->ndirty_inode[FILE_INODE]; | |
0f18b462 | 51 | si->ndirty_all = sbi->ndirty_inode[DIRTY_META]; |
8dcf2ff7 | 52 | si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES); |
36951b38 CY |
53 | si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA); |
54 | si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA); | |
902829aa GKH |
55 | si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg; |
56 | si->rsvd_segs = reserved_segments(sbi); | |
57 | si->overp_segs = overprovision_segments(sbi); | |
58 | si->valid_count = valid_user_blocks(sbi); | |
f83a2584 | 59 | si->discard_blks = discard_blocks(sbi); |
902829aa GKH |
60 | si->valid_node_count = valid_node_count(sbi); |
61 | si->valid_inode_count = valid_inode_count(sbi); | |
d5e8f6c9 | 62 | si->inline_xattr = atomic_read(&sbi->inline_xattr); |
03e14d52 CY |
63 | si->inline_inode = atomic_read(&sbi->inline_inode); |
64 | si->inline_dir = atomic_read(&sbi->inline_dir); | |
652be551 | 65 | si->orphans = sbi->im[ORPHAN_INO].ino_num; |
902829aa GKH |
66 | si->utilization = utilization(sbi); |
67 | ||
68 | si->free_segs = free_segments(sbi); | |
69 | si->free_secs = free_sections(sbi); | |
70 | si->prefree_count = prefree_segments(sbi); | |
71 | si->dirty_count = dirty_segments(sbi); | |
4ef51a8f | 72 | si->node_pages = NODE_MAPPING(sbi)->nrpages; |
9df27d98 | 73 | si->meta_pages = META_MAPPING(sbi)->nrpages; |
902829aa | 74 | si->nats = NM_I(sbi)->nat_cnt; |
dd4e4b59 JK |
75 | si->dirty_nats = NM_I(sbi)->dirty_nat_cnt; |
76 | si->sits = MAIN_SEGS(sbi); | |
77 | si->dirty_sits = SIT_I(sbi)->dirty_sentries; | |
b8559dc2 CY |
78 | si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID_LIST]; |
79 | si->alloc_nids = NM_I(sbi)->nid_cnt[ALLOC_NID_LIST]; | |
902829aa GKH |
80 | si->bg_gc = sbi->bg_gc; |
81 | si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg) | |
82 | * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) | |
83 | / 2; | |
84 | si->util_valid = (int)(written_block_count(sbi) >> | |
85 | sbi->log_blocks_per_seg) | |
86 | * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg) | |
87 | / 2; | |
88 | si->util_invalid = 50 - si->util_free - si->util_valid; | |
89 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) { | |
90 | struct curseg_info *curseg = CURSEG_I(sbi, i); | |
91 | si->curseg[i] = curseg->segno; | |
92 | si->cursec[i] = curseg->segno / sbi->segs_per_sec; | |
93 | si->curzone[i] = si->cursec[i] / sbi->secs_per_zone; | |
94 | } | |
95 | ||
96 | for (i = 0; i < 2; i++) { | |
97 | si->segment_count[i] = sbi->segment_count[i]; | |
98 | si->block_count[i] = sbi->block_count[i]; | |
99 | } | |
b9a2c252 CL |
100 | |
101 | si->inplace_count = atomic_read(&sbi->inplace_count); | |
902829aa GKH |
102 | } |
103 | ||
0a8165d7 | 104 | /* |
902829aa GKH |
105 | * This function calculates BDF of every segments |
106 | */ | |
107 | static void update_sit_info(struct f2fs_sb_info *sbi) | |
108 | { | |
963d4f7d | 109 | struct f2fs_stat_info *si = F2FS_STAT(sbi); |
3589a919 JK |
110 | unsigned long long blks_per_sec, hblks_per_sec, total_vblocks; |
111 | unsigned long long bimodal, dist; | |
902829aa GKH |
112 | unsigned int segno, vblocks; |
113 | int ndirty = 0; | |
114 | ||
115 | bimodal = 0; | |
116 | total_vblocks = 0; | |
3519e3f9 | 117 | blks_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg; |
902829aa | 118 | hblks_per_sec = blks_per_sec / 2; |
7cd8558b | 119 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
902829aa GKH |
120 | vblocks = get_valid_blocks(sbi, segno, sbi->segs_per_sec); |
121 | dist = abs(vblocks - hblks_per_sec); | |
122 | bimodal += dist * dist; | |
123 | ||
124 | if (vblocks > 0 && vblocks < blks_per_sec) { | |
125 | total_vblocks += vblocks; | |
126 | ndirty++; | |
127 | } | |
128 | } | |
7beb428e | 129 | dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100); |
1d7e10d5 | 130 | si->bimodal = div64_u64(bimodal, dist); |
902829aa | 131 | if (si->dirty_count) |
7beb428e | 132 | si->avg_vblocks = div_u64(total_vblocks, ndirty); |
902829aa GKH |
133 | else |
134 | si->avg_vblocks = 0; | |
135 | } | |
136 | ||
0a8165d7 | 137 | /* |
902829aa GKH |
138 | * This function calculates memory footprint. |
139 | */ | |
140 | static void update_mem_info(struct f2fs_sb_info *sbi) | |
141 | { | |
963d4f7d | 142 | struct f2fs_stat_info *si = F2FS_STAT(sbi); |
902829aa | 143 | unsigned npages; |
8c402946 | 144 | int i; |
902829aa GKH |
145 | |
146 | if (si->base_mem) | |
147 | goto get_cache; | |
148 | ||
149 | si->base_mem = sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize; | |
150 | si->base_mem += 2 * sizeof(struct f2fs_inode_info); | |
151 | si->base_mem += sizeof(*sbi->ckpt); | |
523be8a6 | 152 | si->base_mem += sizeof(struct percpu_counter) * NR_COUNT_TYPE; |
902829aa GKH |
153 | |
154 | /* build sm */ | |
155 | si->base_mem += sizeof(struct f2fs_sm_info); | |
156 | ||
157 | /* build sit */ | |
158 | si->base_mem += sizeof(struct sit_info); | |
7cd8558b JK |
159 | si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry); |
160 | si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); | |
3e025740 JK |
161 | si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); |
162 | if (f2fs_discard_en(sbi)) | |
163 | si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); | |
60a3b782 | 164 | si->base_mem += SIT_VBLOCK_MAP_SIZE; |
902829aa | 165 | if (sbi->segs_per_sec > 1) |
7cd8558b | 166 | si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry); |
902829aa GKH |
167 | si->base_mem += __bitmap_size(sbi, SIT_BITMAP); |
168 | ||
169 | /* build free segmap */ | |
170 | si->base_mem += sizeof(struct free_segmap_info); | |
7cd8558b JK |
171 | si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); |
172 | si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); | |
902829aa GKH |
173 | |
174 | /* build curseg */ | |
175 | si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE; | |
09cbfeaf | 176 | si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE; |
902829aa GKH |
177 | |
178 | /* build dirty segmap */ | |
179 | si->base_mem += sizeof(struct dirty_seglist_info); | |
7cd8558b JK |
180 | si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi)); |
181 | si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); | |
902829aa | 182 | |
e1c42045 | 183 | /* build nm */ |
902829aa GKH |
184 | si->base_mem += sizeof(struct f2fs_nm_info); |
185 | si->base_mem += __bitmap_size(sbi, NAT_BITMAP); | |
186 | ||
9066c6a7 CY |
187 | get_cache: |
188 | si->cache_mem = 0; | |
189 | ||
902829aa | 190 | /* build gc */ |
9066c6a7 CY |
191 | if (sbi->gc_thread) |
192 | si->cache_mem += sizeof(struct f2fs_gc_kthread); | |
193 | ||
194 | /* build merge flush thread */ | |
195 | if (SM_I(sbi)->cmd_control_info) | |
196 | si->cache_mem += sizeof(struct flush_cmd_control); | |
902829aa | 197 | |
902829aa | 198 | /* free nids */ |
b8559dc2 CY |
199 | si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID_LIST] + |
200 | NM_I(sbi)->nid_cnt[ALLOC_NID_LIST]) * | |
201 | sizeof(struct free_nid); | |
9066c6a7 | 202 | si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry); |
6f0aacbc JK |
203 | si->cache_mem += NM_I(sbi)->dirty_nat_cnt * |
204 | sizeof(struct nat_entry_set); | |
205 | si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages); | |
652be551 | 206 | for (i = 0; i <= ORPHAN_INO; i++) |
67298804 | 207 | si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry); |
7441ccef JK |
208 | si->cache_mem += atomic_read(&sbi->total_ext_tree) * |
209 | sizeof(struct extent_tree); | |
4bf6fd9f CY |
210 | si->cache_mem += atomic_read(&sbi->total_ext_node) * |
211 | sizeof(struct extent_node); | |
6f0aacbc JK |
212 | |
213 | si->page_mem = 0; | |
214 | npages = NODE_MAPPING(sbi)->nrpages; | |
09cbfeaf | 215 | si->page_mem += (unsigned long long)npages << PAGE_SHIFT; |
6f0aacbc | 216 | npages = META_MAPPING(sbi)->nrpages; |
09cbfeaf | 217 | si->page_mem += (unsigned long long)npages << PAGE_SHIFT; |
902829aa GKH |
218 | } |
219 | ||
220 | static int stat_show(struct seq_file *s, void *v) | |
221 | { | |
145b04e5 | 222 | struct f2fs_stat_info *si; |
902829aa GKH |
223 | int i = 0; |
224 | int j; | |
225 | ||
66af62ce | 226 | mutex_lock(&f2fs_stat_mutex); |
145b04e5 | 227 | list_for_each_entry(si, &f2fs_stat_list, stat_list) { |
902829aa GKH |
228 | update_general_status(si->sbi); |
229 | ||
8c11a53f JK |
230 | seq_printf(s, "\n=====[ partition info(%pg). #%d, %s]=====\n", |
231 | si->sbi->sb->s_bdev, i++, | |
232 | f2fs_readonly(si->sbi->sb) ? "RO": "RW"); | |
7880ceed HL |
233 | seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ", |
234 | si->sit_area_segs, si->nat_area_segs); | |
902829aa GKH |
235 | seq_printf(s, "[SSA: %d] [MAIN: %d", |
236 | si->ssa_area_segs, si->main_area_segs); | |
237 | seq_printf(s, "(OverProv:%d Resv:%d)]\n\n", | |
238 | si->overp_segs, si->rsvd_segs); | |
f83a2584 YH |
239 | if (test_opt(si->sbi, DISCARD)) |
240 | seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n", | |
241 | si->utilization, si->valid_count, si->discard_blks); | |
242 | else | |
243 | seq_printf(s, "Utilization: %u%% (%u valid blocks)\n", | |
244 | si->utilization, si->valid_count); | |
245 | ||
902829aa GKH |
246 | seq_printf(s, " - Node: %u (Inode: %u, ", |
247 | si->valid_node_count, si->valid_inode_count); | |
248 | seq_printf(s, "Other: %u)\n - Data: %u\n", | |
249 | si->valid_node_count - si->valid_inode_count, | |
250 | si->valid_count - si->valid_node_count); | |
d5e8f6c9 CY |
251 | seq_printf(s, " - Inline_xattr Inode: %u\n", |
252 | si->inline_xattr); | |
0dbdc2ae JK |
253 | seq_printf(s, " - Inline_data Inode: %u\n", |
254 | si->inline_inode); | |
3289c061 JK |
255 | seq_printf(s, " - Inline_dentry Inode: %u\n", |
256 | si->inline_dir); | |
652be551 JK |
257 | seq_printf(s, " - Orphan Inode: %u\n", |
258 | si->orphans); | |
902829aa GKH |
259 | seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n", |
260 | si->main_area_segs, si->main_area_sections, | |
261 | si->main_area_zones); | |
262 | seq_printf(s, " - COLD data: %d, %d, %d\n", | |
263 | si->curseg[CURSEG_COLD_DATA], | |
264 | si->cursec[CURSEG_COLD_DATA], | |
265 | si->curzone[CURSEG_COLD_DATA]); | |
266 | seq_printf(s, " - WARM data: %d, %d, %d\n", | |
267 | si->curseg[CURSEG_WARM_DATA], | |
268 | si->cursec[CURSEG_WARM_DATA], | |
269 | si->curzone[CURSEG_WARM_DATA]); | |
270 | seq_printf(s, " - HOT data: %d, %d, %d\n", | |
271 | si->curseg[CURSEG_HOT_DATA], | |
272 | si->cursec[CURSEG_HOT_DATA], | |
273 | si->curzone[CURSEG_HOT_DATA]); | |
274 | seq_printf(s, " - Dir dnode: %d, %d, %d\n", | |
275 | si->curseg[CURSEG_HOT_NODE], | |
276 | si->cursec[CURSEG_HOT_NODE], | |
277 | si->curzone[CURSEG_HOT_NODE]); | |
278 | seq_printf(s, " - File dnode: %d, %d, %d\n", | |
279 | si->curseg[CURSEG_WARM_NODE], | |
280 | si->cursec[CURSEG_WARM_NODE], | |
281 | si->curzone[CURSEG_WARM_NODE]); | |
282 | seq_printf(s, " - Indir nodes: %d, %d, %d\n", | |
283 | si->curseg[CURSEG_COLD_NODE], | |
284 | si->cursec[CURSEG_COLD_NODE], | |
285 | si->curzone[CURSEG_COLD_NODE]); | |
286 | seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n", | |
287 | si->main_area_segs - si->dirty_count - | |
288 | si->prefree_count - si->free_segs, | |
289 | si->dirty_count); | |
290 | seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n", | |
291 | si->prefree_count, si->free_segs, si->free_secs); | |
42190d2a JK |
292 | seq_printf(s, "CP calls: %d (BG: %d)\n", |
293 | si->cp_count, si->bg_cp_count); | |
902829aa GKH |
294 | seq_printf(s, "GC calls: %d (BG: %d)\n", |
295 | si->call_count, si->bg_gc); | |
e1235983 CL |
296 | seq_printf(s, " - data segments : %d (%d)\n", |
297 | si->data_segs, si->bg_data_segs); | |
298 | seq_printf(s, " - node segments : %d (%d)\n", | |
299 | si->node_segs, si->bg_node_segs); | |
300 | seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks, | |
301 | si->bg_data_blks + si->bg_node_blks); | |
302 | seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks, | |
303 | si->bg_data_blks); | |
304 | seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks, | |
305 | si->bg_node_blks); | |
029e13cc | 306 | seq_puts(s, "\nExtent Cache:\n"); |
5b7ee374 | 307 | seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n", |
91c481ff | 308 | si->hit_largest, si->hit_cached, |
029e13cc | 309 | si->hit_rbtree); |
5b7ee374 | 310 | seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n", |
029e13cc | 311 | !si->total_ext ? 0 : |
5b7ee374 | 312 | div64_u64(si->hit_total * 100, si->total_ext), |
029e13cc | 313 | si->hit_total, si->total_ext); |
c00ba554 JK |
314 | seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n", |
315 | si->ext_tree, si->zombie_tree, si->ext_node); | |
6c311ec6 | 316 | seq_puts(s, "\nBalancing F2FS Async:\n"); |
36951b38 CY |
317 | seq_printf(s, " - inmem: %4d, wb_cp_data: %4d, wb_data: %4d\n", |
318 | si->inmem_pages, si->nr_wb_cp_data, si->nr_wb_data); | |
35782b23 | 319 | seq_printf(s, " - nodes: %4d in %4d\n", |
902829aa | 320 | si->ndirty_node, si->node_pages); |
35782b23 | 321 | seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n", |
0f18b462 | 322 | si->ndirty_dent, si->ndirty_dirs, si->ndirty_all); |
35782b23 | 323 | seq_printf(s, " - datas: %4d in files:%4d\n", |
33fbd510 | 324 | si->ndirty_data, si->ndirty_files); |
35782b23 | 325 | seq_printf(s, " - meta: %4d in %4d\n", |
902829aa | 326 | si->ndirty_meta, si->meta_pages); |
35782b23 | 327 | seq_printf(s, " - imeta: %4d\n", |
5bc994a0 | 328 | si->ndirty_imeta); |
dd4e4b59 JK |
329 | seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n", |
330 | si->dirty_nats, si->nats, si->dirty_sits, si->sits); | |
b8559dc2 CY |
331 | seq_printf(s, " - free_nids: %9d, alloc_nids: %9d\n", |
332 | si->free_nids, si->alloc_nids); | |
2d219c51 GZ |
333 | seq_puts(s, "\nDistribution of User Blocks:"); |
334 | seq_puts(s, " [ valid | invalid | free ]\n"); | |
335 | seq_puts(s, " ["); | |
902829aa GKH |
336 | |
337 | for (j = 0; j < si->util_valid; j++) | |
2d219c51 GZ |
338 | seq_putc(s, '-'); |
339 | seq_putc(s, '|'); | |
902829aa GKH |
340 | |
341 | for (j = 0; j < si->util_invalid; j++) | |
2d219c51 GZ |
342 | seq_putc(s, '-'); |
343 | seq_putc(s, '|'); | |
902829aa GKH |
344 | |
345 | for (j = 0; j < si->util_free; j++) | |
2d219c51 GZ |
346 | seq_putc(s, '-'); |
347 | seq_puts(s, "]\n\n"); | |
b9a2c252 | 348 | seq_printf(s, "IPU: %u blocks\n", si->inplace_count); |
902829aa GKH |
349 | seq_printf(s, "SSR: %u blocks in %u segments\n", |
350 | si->block_count[SSR], si->segment_count[SSR]); | |
351 | seq_printf(s, "LFS: %u blocks in %u segments\n", | |
352 | si->block_count[LFS], si->segment_count[LFS]); | |
353 | ||
354 | /* segment usage info */ | |
355 | update_sit_info(si->sbi); | |
356 | seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n", | |
357 | si->bimodal, si->avg_vblocks); | |
358 | ||
359 | /* memory footprint */ | |
360 | update_mem_info(si->sbi); | |
9edcdabf | 361 | seq_printf(s, "\nMemory: %llu KB\n", |
6f0aacbc | 362 | (si->base_mem + si->cache_mem + si->page_mem) >> 10); |
9edcdabf | 363 | seq_printf(s, " - static: %llu KB\n", |
6f0aacbc | 364 | si->base_mem >> 10); |
9edcdabf | 365 | seq_printf(s, " - cached: %llu KB\n", |
6f0aacbc | 366 | si->cache_mem >> 10); |
9edcdabf | 367 | seq_printf(s, " - paged : %llu KB\n", |
6f0aacbc | 368 | si->page_mem >> 10); |
902829aa | 369 | } |
66af62ce | 370 | mutex_unlock(&f2fs_stat_mutex); |
902829aa GKH |
371 | return 0; |
372 | } | |
373 | ||
374 | static int stat_open(struct inode *inode, struct file *file) | |
375 | { | |
376 | return single_open(file, stat_show, inode->i_private); | |
377 | } | |
378 | ||
379 | static const struct file_operations stat_fops = { | |
05e6ea26 | 380 | .owner = THIS_MODULE, |
902829aa GKH |
381 | .open = stat_open, |
382 | .read = seq_read, | |
383 | .llseek = seq_lseek, | |
384 | .release = single_release, | |
385 | }; | |
386 | ||
4589d25d | 387 | int f2fs_build_stats(struct f2fs_sb_info *sbi) |
902829aa GKH |
388 | { |
389 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
390 | struct f2fs_stat_info *si; | |
391 | ||
963d4f7d GZ |
392 | si = kzalloc(sizeof(struct f2fs_stat_info), GFP_KERNEL); |
393 | if (!si) | |
902829aa GKH |
394 | return -ENOMEM; |
395 | ||
902829aa GKH |
396 | si->all_area_segs = le32_to_cpu(raw_super->segment_count); |
397 | si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit); | |
398 | si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat); | |
399 | si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa); | |
400 | si->main_area_segs = le32_to_cpu(raw_super->segment_count_main); | |
401 | si->main_area_sections = le32_to_cpu(raw_super->section_count); | |
402 | si->main_area_zones = si->main_area_sections / | |
403 | le32_to_cpu(raw_super->secs_per_zone); | |
404 | si->sbi = sbi; | |
963d4f7d | 405 | sbi->stat_info = si; |
66af62ce | 406 | |
5b7ee374 CY |
407 | atomic64_set(&sbi->total_hit_ext, 0); |
408 | atomic64_set(&sbi->read_hit_rbtree, 0); | |
409 | atomic64_set(&sbi->read_hit_largest, 0); | |
410 | atomic64_set(&sbi->read_hit_cached, 0); | |
727edac5 | 411 | |
d5e8f6c9 | 412 | atomic_set(&sbi->inline_xattr, 0); |
03e14d52 CY |
413 | atomic_set(&sbi->inline_inode, 0); |
414 | atomic_set(&sbi->inline_dir, 0); | |
b9a2c252 | 415 | atomic_set(&sbi->inplace_count, 0); |
03e14d52 | 416 | |
66af62ce | 417 | mutex_lock(&f2fs_stat_mutex); |
418 | list_add_tail(&si->stat_list, &f2fs_stat_list); | |
419 | mutex_unlock(&f2fs_stat_mutex); | |
420 | ||
902829aa GKH |
421 | return 0; |
422 | } | |
423 | ||
902829aa GKH |
424 | void f2fs_destroy_stats(struct f2fs_sb_info *sbi) |
425 | { | |
963d4f7d | 426 | struct f2fs_stat_info *si = F2FS_STAT(sbi); |
902829aa | 427 | |
66af62ce | 428 | mutex_lock(&f2fs_stat_mutex); |
902829aa | 429 | list_del(&si->stat_list); |
66af62ce | 430 | mutex_unlock(&f2fs_stat_mutex); |
431 | ||
963d4f7d | 432 | kfree(si); |
902829aa GKH |
433 | } |
434 | ||
787c7b8c | 435 | int __init f2fs_create_root_stats(void) |
4589d25d | 436 | { |
c524723e YL |
437 | struct dentry *file; |
438 | ||
40e1ebe9 YL |
439 | f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL); |
440 | if (!f2fs_debugfs_root) | |
787c7b8c | 441 | return -ENOMEM; |
c524723e | 442 | |
40e1ebe9 | 443 | file = debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, |
c524723e | 444 | NULL, &stat_fops); |
7a6c76b1 GZ |
445 | if (!file) { |
446 | debugfs_remove(f2fs_debugfs_root); | |
447 | f2fs_debugfs_root = NULL; | |
787c7b8c | 448 | return -ENOMEM; |
7a6c76b1 | 449 | } |
787c7b8c CY |
450 | |
451 | return 0; | |
4589d25d NJ |
452 | } |
453 | ||
454 | void f2fs_destroy_root_stats(void) | |
902829aa | 455 | { |
40e1ebe9 | 456 | if (!f2fs_debugfs_root) |
c524723e YL |
457 | return; |
458 | ||
40e1ebe9 YL |
459 | debugfs_remove_recursive(f2fs_debugfs_root); |
460 | f2fs_debugfs_root = NULL; | |
902829aa | 461 | } |