Branch data Line data Source code
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 : 0 : static void update_general_status(struct f2fs_sb_info *sbi)
28 : : {
29 : : struct f2fs_stat_info *si = F2FS_STAT(sbi);
30 : : struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
31 : : int i;
32 : :
33 : : /* these will be changed if online resize is done */
34 : 0 : si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
35 : 0 : si->main_area_sections = le32_to_cpu(raw_super->section_count);
36 : 0 : si->main_area_zones = si->main_area_sections /
37 : 0 : le32_to_cpu(raw_super->secs_per_zone);
38 : :
39 : : /* validation check of the segment numbers */
40 : 0 : si->hit_largest = atomic64_read(&sbi->read_hit_largest);
41 : 0 : si->hit_cached = atomic64_read(&sbi->read_hit_cached);
42 : 0 : si->hit_rbtree = atomic64_read(&sbi->read_hit_rbtree);
43 : 0 : si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree;
44 : 0 : si->total_ext = atomic64_read(&sbi->total_hit_ext);
45 : 0 : si->ext_tree = atomic_read(&sbi->total_ext_tree);
46 : 0 : si->zombie_tree = atomic_read(&sbi->total_zombie_tree);
47 : 0 : si->ext_node = atomic_read(&sbi->total_ext_node);
48 : 0 : si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
49 : 0 : si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
50 : 0 : si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
51 : 0 : si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
52 : 0 : si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
53 : 0 : si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
54 : 0 : si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
55 : 0 : si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
56 : 0 : si->nquota_files = sbi->nquota_files;
57 : 0 : si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
58 : 0 : si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
59 : 0 : si->aw_cnt = atomic_read(&sbi->aw_cnt);
60 : 0 : si->vw_cnt = atomic_read(&sbi->vw_cnt);
61 : 0 : si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
62 : 0 : si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt);
63 : 0 : si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
64 : 0 : si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
65 : 0 : si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
66 : 0 : si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
67 : 0 : si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
68 : 0 : si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
69 : 0 : si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
70 : 0 : if (SM_I(sbi)->fcc_info) {
71 : 0 : si->nr_flushed =
72 : 0 : atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
73 : 0 : si->nr_flushing =
74 : 0 : atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
75 : 0 : si->flush_list_empty =
76 : 0 : llist_empty(&SM_I(sbi)->fcc_info->issue_list);
77 : : }
78 : 0 : if (SM_I(sbi)->dcc_info) {
79 : 0 : si->nr_discarded =
80 : 0 : atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
81 : 0 : si->nr_discarding =
82 : 0 : atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
83 : 0 : si->nr_discard_cmd =
84 : 0 : atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
85 : 0 : si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
86 : : }
87 : 0 : si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
88 : 0 : si->rsvd_segs = reserved_segments(sbi);
89 : 0 : si->overp_segs = overprovision_segments(sbi);
90 : 0 : si->valid_count = valid_user_blocks(sbi);
91 : 0 : si->discard_blks = discard_blocks(sbi);
92 : 0 : si->valid_node_count = valid_node_count(sbi);
93 : 0 : si->valid_inode_count = valid_inode_count(sbi);
94 : 0 : si->inline_xattr = atomic_read(&sbi->inline_xattr);
95 : 0 : si->inline_inode = atomic_read(&sbi->inline_inode);
96 : 0 : si->inline_dir = atomic_read(&sbi->inline_dir);
97 : 0 : si->append = sbi->im[APPEND_INO].ino_num;
98 : 0 : si->update = sbi->im[UPDATE_INO].ino_num;
99 : 0 : si->orphans = sbi->im[ORPHAN_INO].ino_num;
100 : 0 : si->utilization = utilization(sbi);
101 : :
102 : 0 : si->free_segs = free_segments(sbi);
103 : 0 : si->free_secs = free_sections(sbi);
104 : 0 : si->prefree_count = prefree_segments(sbi);
105 : 0 : si->dirty_count = dirty_segments(sbi);
106 : 0 : if (sbi->node_inode)
107 : 0 : si->node_pages = NODE_MAPPING(sbi)->nrpages;
108 : 0 : if (sbi->meta_inode)
109 : 0 : si->meta_pages = META_MAPPING(sbi)->nrpages;
110 : 0 : si->nats = NM_I(sbi)->nat_cnt;
111 : 0 : si->dirty_nats = NM_I(sbi)->dirty_nat_cnt;
112 : 0 : si->sits = MAIN_SEGS(sbi);
113 : 0 : si->dirty_sits = SIT_I(sbi)->dirty_sentries;
114 : 0 : si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
115 : 0 : si->avail_nids = NM_I(sbi)->available_nids;
116 : 0 : si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
117 : 0 : si->bg_gc = sbi->bg_gc;
118 : 0 : si->io_skip_bggc = sbi->io_skip_bggc;
119 : 0 : si->other_skip_bggc = sbi->other_skip_bggc;
120 : 0 : si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC];
121 : 0 : si->skipped_atomic_files[FG_GC] = sbi->skipped_atomic_files[FG_GC];
122 : 0 : si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
123 : 0 : * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
124 : 0 : / 2;
125 : 0 : si->util_valid = (int)(written_block_count(sbi) >>
126 : 0 : sbi->log_blocks_per_seg)
127 : 0 : * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
128 : 0 : / 2;
129 : 0 : si->util_invalid = 50 - si->util_free - si->util_valid;
130 : 0 : for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) {
131 : : struct curseg_info *curseg = CURSEG_I(sbi, i);
132 : 0 : si->curseg[i] = curseg->segno;
133 : 0 : si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
134 : 0 : si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
135 : : }
136 : :
137 : 0 : for (i = META_CP; i < META_MAX; i++)
138 : 0 : si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
139 : :
140 : 0 : for (i = 0; i < 2; i++) {
141 : 0 : si->segment_count[i] = sbi->segment_count[i];
142 : 0 : si->block_count[i] = sbi->block_count[i];
143 : : }
144 : :
145 : 0 : si->inplace_count = atomic_read(&sbi->inplace_count);
146 : 0 : }
147 : :
148 : : /*
149 : : * This function calculates BDF of every segments
150 : : */
151 : 0 : static void update_sit_info(struct f2fs_sb_info *sbi)
152 : : {
153 : : struct f2fs_stat_info *si = F2FS_STAT(sbi);
154 : : unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
155 : : unsigned long long bimodal, dist;
156 : : unsigned int segno, vblocks;
157 : : int ndirty = 0;
158 : :
159 : : bimodal = 0;
160 : : total_vblocks = 0;
161 : 0 : blks_per_sec = BLKS_PER_SEC(sbi);
162 : 0 : hblks_per_sec = blks_per_sec / 2;
163 : 0 : for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
164 : 0 : vblocks = get_valid_blocks(sbi, segno, true);
165 : 0 : dist = abs(vblocks - hblks_per_sec);
166 : 0 : bimodal += dist * dist;
167 : :
168 : 0 : if (vblocks > 0 && vblocks < blks_per_sec) {
169 : 0 : total_vblocks += vblocks;
170 : 0 : ndirty++;
171 : : }
172 : : }
173 : 0 : dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
174 : 0 : si->bimodal = div64_u64(bimodal, dist);
175 : 0 : if (si->dirty_count)
176 : 0 : si->avg_vblocks = div_u64(total_vblocks, ndirty);
177 : : else
178 : 0 : si->avg_vblocks = 0;
179 : 0 : }
180 : :
181 : : /*
182 : : * This function calculates memory footprint.
183 : : */
184 : 0 : static void update_mem_info(struct f2fs_sb_info *sbi)
185 : : {
186 : : struct f2fs_stat_info *si = F2FS_STAT(sbi);
187 : : int i;
188 : :
189 : 0 : if (si->base_mem)
190 : : goto get_cache;
191 : :
192 : : /* build stat */
193 : 0 : si->base_mem = sizeof(struct f2fs_stat_info);
194 : :
195 : : /* build superblock */
196 : 0 : si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
197 : 0 : si->base_mem += 2 * sizeof(struct f2fs_inode_info);
198 : 0 : si->base_mem += sizeof(*sbi->ckpt);
199 : :
200 : : /* build sm */
201 : 0 : si->base_mem += sizeof(struct f2fs_sm_info);
202 : :
203 : : /* build sit */
204 : 0 : si->base_mem += sizeof(struct sit_info);
205 : 0 : si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
206 : 0 : si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
207 : 0 : si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
208 : 0 : si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
209 : 0 : si->base_mem += SIT_VBLOCK_MAP_SIZE;
210 : 0 : if (__is_large_section(sbi))
211 : 0 : si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
212 : 0 : si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
213 : :
214 : : /* build free segmap */
215 : 0 : si->base_mem += sizeof(struct free_segmap_info);
216 : 0 : si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
217 : 0 : si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
218 : :
219 : : /* build curseg */
220 : 0 : si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
221 : 0 : si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
222 : :
223 : : /* build dirty segmap */
224 : 0 : si->base_mem += sizeof(struct dirty_seglist_info);
225 : 0 : si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
226 : 0 : si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
227 : :
228 : : /* build nm */
229 : 0 : si->base_mem += sizeof(struct f2fs_nm_info);
230 : 0 : si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
231 : 0 : si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
232 : 0 : si->base_mem += NM_I(sbi)->nat_blocks *
233 : : f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
234 : 0 : si->base_mem += NM_I(sbi)->nat_blocks / 8;
235 : 0 : si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
236 : :
237 : : get_cache:
238 : 0 : si->cache_mem = 0;
239 : :
240 : : /* build gc */
241 : 0 : if (sbi->gc_thread)
242 : 0 : si->cache_mem += sizeof(struct f2fs_gc_kthread);
243 : :
244 : : /* build merge flush thread */
245 : 0 : if (SM_I(sbi)->fcc_info)
246 : 0 : si->cache_mem += sizeof(struct flush_cmd_control);
247 : 0 : if (SM_I(sbi)->dcc_info) {
248 : 0 : si->cache_mem += sizeof(struct discard_cmd_control);
249 : 0 : si->cache_mem += sizeof(struct discard_cmd) *
250 : 0 : atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
251 : : }
252 : :
253 : : /* free nids */
254 : 0 : si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
255 : 0 : NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
256 : : sizeof(struct free_nid);
257 : 0 : si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry);
258 : 0 : si->cache_mem += NM_I(sbi)->dirty_nat_cnt *
259 : : sizeof(struct nat_entry_set);
260 : 0 : si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
261 : 0 : for (i = 0; i < MAX_INO_ENTRY; i++)
262 : 0 : si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
263 : 0 : si->cache_mem += atomic_read(&sbi->total_ext_tree) *
264 : : sizeof(struct extent_tree);
265 : 0 : si->cache_mem += atomic_read(&sbi->total_ext_node) *
266 : : sizeof(struct extent_node);
267 : :
268 : 0 : si->page_mem = 0;
269 : 0 : if (sbi->node_inode) {
270 : 0 : unsigned npages = NODE_MAPPING(sbi)->nrpages;
271 : 0 : si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
272 : : }
273 : 0 : if (sbi->meta_inode) {
274 : 0 : unsigned npages = META_MAPPING(sbi)->nrpages;
275 : 0 : si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
276 : : }
277 : 0 : }
278 : :
279 : 0 : static int stat_show(struct seq_file *s, void *v)
280 : : {
281 : : struct f2fs_stat_info *si;
282 : : int i = 0;
283 : : int j;
284 : :
285 : 0 : mutex_lock(&f2fs_stat_mutex);
286 : 0 : list_for_each_entry(si, &f2fs_stat_list, stat_list) {
287 : 0 : update_general_status(si->sbi);
288 : :
289 : 0 : seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
290 : 0 : si->sbi->sb->s_bdev, i++,
291 : : f2fs_readonly(si->sbi->sb) ? "RO": "RW",
292 : : is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
293 : 0 : "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good"));
294 : 0 : seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
295 : : si->sit_area_segs, si->nat_area_segs);
296 : 0 : seq_printf(s, "[SSA: %d] [MAIN: %d",
297 : : si->ssa_area_segs, si->main_area_segs);
298 : 0 : seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
299 : : si->overp_segs, si->rsvd_segs);
300 : 0 : if (test_opt(si->sbi, DISCARD))
301 : 0 : seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
302 : : si->utilization, si->valid_count, si->discard_blks);
303 : : else
304 : 0 : seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
305 : : si->utilization, si->valid_count);
306 : :
307 : 0 : seq_printf(s, " - Node: %u (Inode: %u, ",
308 : : si->valid_node_count, si->valid_inode_count);
309 : 0 : seq_printf(s, "Other: %u)\n - Data: %u\n",
310 : 0 : si->valid_node_count - si->valid_inode_count,
311 : 0 : si->valid_count - si->valid_node_count);
312 : 0 : seq_printf(s, " - Inline_xattr Inode: %u\n",
313 : : si->inline_xattr);
314 : 0 : seq_printf(s, " - Inline_data Inode: %u\n",
315 : : si->inline_inode);
316 : 0 : seq_printf(s, " - Inline_dentry Inode: %u\n",
317 : : si->inline_dir);
318 : 0 : seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
319 : : si->orphans, si->append, si->update);
320 : 0 : seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
321 : : si->main_area_segs, si->main_area_sections,
322 : : si->main_area_zones);
323 : 0 : seq_printf(s, " - COLD data: %d, %d, %d\n",
324 : : si->curseg[CURSEG_COLD_DATA],
325 : : si->cursec[CURSEG_COLD_DATA],
326 : : si->curzone[CURSEG_COLD_DATA]);
327 : 0 : seq_printf(s, " - WARM data: %d, %d, %d\n",
328 : : si->curseg[CURSEG_WARM_DATA],
329 : : si->cursec[CURSEG_WARM_DATA],
330 : : si->curzone[CURSEG_WARM_DATA]);
331 : 0 : seq_printf(s, " - HOT data: %d, %d, %d\n",
332 : : si->curseg[CURSEG_HOT_DATA],
333 : : si->cursec[CURSEG_HOT_DATA],
334 : : si->curzone[CURSEG_HOT_DATA]);
335 : 0 : seq_printf(s, " - Dir dnode: %d, %d, %d\n",
336 : : si->curseg[CURSEG_HOT_NODE],
337 : : si->cursec[CURSEG_HOT_NODE],
338 : : si->curzone[CURSEG_HOT_NODE]);
339 : 0 : seq_printf(s, " - File dnode: %d, %d, %d\n",
340 : : si->curseg[CURSEG_WARM_NODE],
341 : : si->cursec[CURSEG_WARM_NODE],
342 : : si->curzone[CURSEG_WARM_NODE]);
343 : 0 : seq_printf(s, " - Indir nodes: %d, %d, %d\n",
344 : : si->curseg[CURSEG_COLD_NODE],
345 : : si->cursec[CURSEG_COLD_NODE],
346 : : si->curzone[CURSEG_COLD_NODE]);
347 : 0 : seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
348 : 0 : si->main_area_segs - si->dirty_count -
349 : 0 : si->prefree_count - si->free_segs,
350 : : si->dirty_count);
351 : 0 : seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
352 : : si->prefree_count, si->free_segs, si->free_secs);
353 : 0 : seq_printf(s, "CP calls: %d (BG: %d)\n",
354 : : si->cp_count, si->bg_cp_count);
355 : 0 : seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
356 : 0 : seq_printf(s, " - sit blocks : %u\n",
357 : : si->meta_count[META_SIT]);
358 : 0 : seq_printf(s, " - nat blocks : %u\n",
359 : : si->meta_count[META_NAT]);
360 : 0 : seq_printf(s, " - ssa blocks : %u\n",
361 : : si->meta_count[META_SSA]);
362 : 0 : seq_printf(s, "GC calls: %d (BG: %d)\n",
363 : : si->call_count, si->bg_gc);
364 : 0 : seq_printf(s, " - data segments : %d (%d)\n",
365 : : si->data_segs, si->bg_data_segs);
366 : 0 : seq_printf(s, " - node segments : %d (%d)\n",
367 : : si->node_segs, si->bg_node_segs);
368 : 0 : seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
369 : 0 : si->bg_data_blks + si->bg_node_blks);
370 : 0 : seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
371 : : si->bg_data_blks);
372 : 0 : seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
373 : : si->bg_node_blks);
374 : 0 : seq_printf(s, "Skipped : atomic write %llu (%llu)\n",
375 : 0 : si->skipped_atomic_files[BG_GC] +
376 : 0 : si->skipped_atomic_files[FG_GC],
377 : : si->skipped_atomic_files[BG_GC]);
378 : 0 : seq_printf(s, "BG skip : IO: %u, Other: %u\n",
379 : : si->io_skip_bggc, si->other_skip_bggc);
380 : 0 : seq_puts(s, "\nExtent Cache:\n");
381 : 0 : seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
382 : : si->hit_largest, si->hit_cached,
383 : : si->hit_rbtree);
384 : 0 : seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
385 : 0 : !si->total_ext ? 0 :
386 : 0 : div64_u64(si->hit_total * 100, si->total_ext),
387 : : si->hit_total, si->total_ext);
388 : 0 : seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
389 : : si->ext_tree, si->zombie_tree, si->ext_node);
390 : 0 : seq_puts(s, "\nBalancing F2FS Async:\n");
391 : 0 : seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
392 : : si->nr_dio_read, si->nr_dio_write);
393 : 0 : seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
394 : : si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
395 : 0 : seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
396 : : "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
397 : : si->nr_wb_cp_data, si->nr_wb_data,
398 : : si->nr_flushing, si->nr_flushed,
399 : : si->flush_list_empty,
400 : : si->nr_discarding, si->nr_discarded,
401 : : si->nr_discard_cmd, si->undiscard_blks);
402 : 0 : seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), "
403 : : "volatile IO: %4d (Max. %4d)\n",
404 : : si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
405 : : si->vw_cnt, si->max_vw_cnt);
406 : 0 : seq_printf(s, " - nodes: %4d in %4d\n",
407 : : si->ndirty_node, si->node_pages);
408 : 0 : seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
409 : : si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
410 : 0 : seq_printf(s, " - datas: %4d in files:%4d\n",
411 : : si->ndirty_data, si->ndirty_files);
412 : 0 : seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
413 : : si->ndirty_qdata, si->nquota_files);
414 : 0 : seq_printf(s, " - meta: %4d in %4d\n",
415 : : si->ndirty_meta, si->meta_pages);
416 : 0 : seq_printf(s, " - imeta: %4d\n",
417 : : si->ndirty_imeta);
418 : 0 : seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
419 : : si->dirty_nats, si->nats, si->dirty_sits, si->sits);
420 : 0 : seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
421 : : si->free_nids, si->avail_nids, si->alloc_nids);
422 : 0 : seq_puts(s, "\nDistribution of User Blocks:");
423 : 0 : seq_puts(s, " [ valid | invalid | free ]\n");
424 : 0 : seq_puts(s, " [");
425 : :
426 : 0 : for (j = 0; j < si->util_valid; j++)
427 : 0 : seq_putc(s, '-');
428 : 0 : seq_putc(s, '|');
429 : :
430 : 0 : for (j = 0; j < si->util_invalid; j++)
431 : 0 : seq_putc(s, '-');
432 : 0 : seq_putc(s, '|');
433 : :
434 : 0 : for (j = 0; j < si->util_free; j++)
435 : 0 : seq_putc(s, '-');
436 : 0 : seq_puts(s, "]\n\n");
437 : 0 : seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
438 : 0 : seq_printf(s, "SSR: %u blocks in %u segments\n",
439 : : si->block_count[SSR], si->segment_count[SSR]);
440 : 0 : seq_printf(s, "LFS: %u blocks in %u segments\n",
441 : : si->block_count[LFS], si->segment_count[LFS]);
442 : :
443 : : /* segment usage info */
444 : 0 : update_sit_info(si->sbi);
445 : 0 : seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
446 : : si->bimodal, si->avg_vblocks);
447 : :
448 : : /* memory footprint */
449 : 0 : update_mem_info(si->sbi);
450 : 0 : seq_printf(s, "\nMemory: %llu KB\n",
451 : 0 : (si->base_mem + si->cache_mem + si->page_mem) >> 10);
452 : 0 : seq_printf(s, " - static: %llu KB\n",
453 : 0 : si->base_mem >> 10);
454 : 0 : seq_printf(s, " - cached: %llu KB\n",
455 : 0 : si->cache_mem >> 10);
456 : 0 : seq_printf(s, " - paged : %llu KB\n",
457 : 0 : si->page_mem >> 10);
458 : : }
459 : 0 : mutex_unlock(&f2fs_stat_mutex);
460 : 0 : return 0;
461 : : }
462 : :
463 : 0 : DEFINE_SHOW_ATTRIBUTE(stat);
464 : :
465 : 0 : int f2fs_build_stats(struct f2fs_sb_info *sbi)
466 : : {
467 : : struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
468 : : struct f2fs_stat_info *si;
469 : : int i;
470 : :
471 : : si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
472 : 0 : if (!si)
473 : : return -ENOMEM;
474 : :
475 : 0 : si->all_area_segs = le32_to_cpu(raw_super->segment_count);
476 : 0 : si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
477 : 0 : si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
478 : 0 : si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
479 : 0 : si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
480 : 0 : si->main_area_sections = le32_to_cpu(raw_super->section_count);
481 : 0 : si->main_area_zones = si->main_area_sections /
482 : 0 : le32_to_cpu(raw_super->secs_per_zone);
483 : 0 : si->sbi = sbi;
484 : 0 : sbi->stat_info = si;
485 : :
486 : 0 : atomic64_set(&sbi->total_hit_ext, 0);
487 : 0 : atomic64_set(&sbi->read_hit_rbtree, 0);
488 : 0 : atomic64_set(&sbi->read_hit_largest, 0);
489 : 0 : atomic64_set(&sbi->read_hit_cached, 0);
490 : :
491 : : atomic_set(&sbi->inline_xattr, 0);
492 : : atomic_set(&sbi->inline_inode, 0);
493 : : atomic_set(&sbi->inline_dir, 0);
494 : : atomic_set(&sbi->inplace_count, 0);
495 : 0 : for (i = META_CP; i < META_MAX; i++)
496 : 0 : atomic_set(&sbi->meta_count[i], 0);
497 : :
498 : : atomic_set(&sbi->aw_cnt, 0);
499 : : atomic_set(&sbi->vw_cnt, 0);
500 : : atomic_set(&sbi->max_aw_cnt, 0);
501 : : atomic_set(&sbi->max_vw_cnt, 0);
502 : :
503 : 0 : mutex_lock(&f2fs_stat_mutex);
504 : 0 : list_add_tail(&si->stat_list, &f2fs_stat_list);
505 : 0 : mutex_unlock(&f2fs_stat_mutex);
506 : :
507 : 0 : return 0;
508 : : }
509 : :
510 : 0 : void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
511 : : {
512 : : struct f2fs_stat_info *si = F2FS_STAT(sbi);
513 : :
514 : 0 : mutex_lock(&f2fs_stat_mutex);
515 : : list_del(&si->stat_list);
516 : 0 : mutex_unlock(&f2fs_stat_mutex);
517 : :
518 : 0 : kvfree(si);
519 : 0 : }
520 : :
521 : 3 : void __init f2fs_create_root_stats(void)
522 : : {
523 : 3 : f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
524 : :
525 : 3 : debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL,
526 : : &stat_fops);
527 : 3 : }
528 : :
529 : 0 : void f2fs_destroy_root_stats(void)
530 : : {
531 : 0 : debugfs_remove_recursive(f2fs_debugfs_root);
532 : 0 : f2fs_debugfs_root = NULL;
533 : 0 : }
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