?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 5.6.13
[linux/fpc-iii.git] / fs / f2fs / debug.c
blob6b89eae5e4ca21a794fde1f59d436c3797d65519
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 = atomic_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;
149 si->dirty_nats = NM_I(sbi)->dirty_nat_cnt;
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 <= CURSEG_COLD_NODE; 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 < 2; i++) {
178 si->segment_count[i] = sbi->segment_count[i];
179 si->block_count[i] = sbi->block_count[i];
180 }
181
182 si->inplace_count = atomic_read(&sbi->inplace_count);
183 }
184
185 /*
186 * This function calculates memory footprint.
187 */
188 static void update_mem_info(struct f2fs_sb_info *sbi)
189 {
190 struct f2fs_stat_info *si = F2FS_STAT(sbi);
191 int i;
192
193 if (si->base_mem)
194 goto get_cache;
195
196 /* build stat */
197 si->base_mem = sizeof(struct f2fs_stat_info);
198
199 /* build superblock */
200 si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
201 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
202 si->base_mem += sizeof(*sbi->ckpt);
203
204 /* build sm */
205 si->base_mem += sizeof(struct f2fs_sm_info);
206
207 /* build sit */
208 si->base_mem += sizeof(struct sit_info);
209 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
210 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
211 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
212 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
213 si->base_mem += SIT_VBLOCK_MAP_SIZE;
214 if (__is_large_section(sbi))
215 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
216 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
217
218 /* build free segmap */
219 si->base_mem += sizeof(struct free_segmap_info);
220 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
221 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
222
223 /* build curseg */
224 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
225 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
226
227 /* build dirty segmap */
228 si->base_mem += sizeof(struct dirty_seglist_info);
229 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
230 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
231
232 /* build nm */
233 si->base_mem += sizeof(struct f2fs_nm_info);
234 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
235 si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
236 si->base_mem += NM_I(sbi)->nat_blocks *
237 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
238 si->base_mem += NM_I(sbi)->nat_blocks / 8;
239 si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
240
241 get_cache:
242 si->cache_mem = 0;
243
244 /* build gc */
245 if (sbi->gc_thread)
246 si->cache_mem += sizeof(struct f2fs_gc_kthread);
247
248 /* build merge flush thread */
249 if (SM_I(sbi)->fcc_info)
250 si->cache_mem += sizeof(struct flush_cmd_control);
251 if (SM_I(sbi)->dcc_info) {
252 si->cache_mem += sizeof(struct discard_cmd_control);
253 si->cache_mem += sizeof(struct discard_cmd) *
254 atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
255 }
256
257 /* free nids */
258 si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
259 NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
260 sizeof(struct free_nid);
261 si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry);
262 si->cache_mem += NM_I(sbi)->dirty_nat_cnt *
263 sizeof(struct nat_entry_set);
264 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
265 for (i = 0; i < MAX_INO_ENTRY; i++)
266 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
267 si->cache_mem += atomic_read(&sbi->total_ext_tree) *
268 sizeof(struct extent_tree);
269 si->cache_mem += atomic_read(&sbi->total_ext_node) *
270 sizeof(struct extent_node);
271
272 si->page_mem = 0;
273 if (sbi->node_inode) {
274 unsigned npages = NODE_MAPPING(sbi)->nrpages;
275 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
276 }
277 if (sbi->meta_inode) {
278 unsigned npages = META_MAPPING(sbi)->nrpages;
279 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
280 }
281 }
282
283 static int stat_show(struct seq_file *s, void *v)
284 {
285 struct f2fs_stat_info *si;
286 int i = 0;
287 int j;
288
289 mutex_lock(&f2fs_stat_mutex);
290 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
291 update_general_status(si->sbi);
292
293 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
294 si->sbi->sb->s_bdev, i++,
295 f2fs_readonly(si->sbi->sb) ? "RO": "RW",
296 is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
297 "Disabled": (f2fs_cp_error(si->sbi) ? "Error": "Good"));
298 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
299 si->sit_area_segs, si->nat_area_segs);
300 seq_printf(s, "[SSA: %d] [MAIN: %d",
301 si->ssa_area_segs, si->main_area_segs);
302 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
303 si->overp_segs, si->rsvd_segs);
304 if (test_opt(si->sbi, DISCARD))
305 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
306 si->utilization, si->valid_count, si->discard_blks);
307 else
308 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
309 si->utilization, si->valid_count);
310
311 seq_printf(s, " - Node: %u (Inode: %u, ",
312 si->valid_node_count, si->valid_inode_count);
313 seq_printf(s, "Other: %u)\n - Data: %u\n",
314 si->valid_node_count - si->valid_inode_count,
315 si->valid_count - si->valid_node_count);
316 seq_printf(s, " - Inline_xattr Inode: %u\n",
317 si->inline_xattr);
318 seq_printf(s, " - Inline_data Inode: %u\n",
319 si->inline_inode);
320 seq_printf(s, " - Inline_dentry Inode: %u\n",
321 si->inline_dir);
322 seq_printf(s, " - Compressed Inode: %u, Blocks: %u\n",
323 si->compr_inode, si->compr_blocks);
324 seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
325 si->orphans, si->append, si->update);
326 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
327 si->main_area_segs, si->main_area_sections,
328 si->main_area_zones);
329 seq_printf(s, " - COLD data: %d, %d, %d\n",
330 si->curseg[CURSEG_COLD_DATA],
331 si->cursec[CURSEG_COLD_DATA],
332 si->curzone[CURSEG_COLD_DATA]);
333 seq_printf(s, " - WARM data: %d, %d, %d\n",
334 si->curseg[CURSEG_WARM_DATA],
335 si->cursec[CURSEG_WARM_DATA],
336 si->curzone[CURSEG_WARM_DATA]);
337 seq_printf(s, " - HOT data: %d, %d, %d\n",
338 si->curseg[CURSEG_HOT_DATA],
339 si->cursec[CURSEG_HOT_DATA],
340 si->curzone[CURSEG_HOT_DATA]);
341 seq_printf(s, " - Dir dnode: %d, %d, %d\n",
342 si->curseg[CURSEG_HOT_NODE],
343 si->cursec[CURSEG_HOT_NODE],
344 si->curzone[CURSEG_HOT_NODE]);
345 seq_printf(s, " - File dnode: %d, %d, %d\n",
346 si->curseg[CURSEG_WARM_NODE],
347 si->cursec[CURSEG_WARM_NODE],
348 si->curzone[CURSEG_WARM_NODE]);
349 seq_printf(s, " - Indir nodes: %d, %d, %d\n",
350 si->curseg[CURSEG_COLD_NODE],
351 si->cursec[CURSEG_COLD_NODE],
352 si->curzone[CURSEG_COLD_NODE]);
353 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
354 si->main_area_segs - si->dirty_count -
355 si->prefree_count - si->free_segs,
356 si->dirty_count);
357 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
358 si->prefree_count, si->free_segs, si->free_secs);
359 seq_printf(s, "CP calls: %d (BG: %d)\n",
360 si->cp_count, si->bg_cp_count);
361 seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
362 seq_printf(s, " - sit blocks : %u\n",
363 si->meta_count[META_SIT]);
364 seq_printf(s, " - nat blocks : %u\n",
365 si->meta_count[META_NAT]);
366 seq_printf(s, " - ssa blocks : %u\n",
367 si->meta_count[META_SSA]);
368 seq_printf(s, "GC calls: %d (BG: %d)\n",
369 si->call_count, si->bg_gc);
370 seq_printf(s, " - data segments : %d (%d)\n",
371 si->data_segs, si->bg_data_segs);
372 seq_printf(s, " - node segments : %d (%d)\n",
373 si->node_segs, si->bg_node_segs);
374 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
375 si->bg_data_blks + si->bg_node_blks);
376 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
377 si->bg_data_blks);
378 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
379 si->bg_node_blks);
380 seq_printf(s, "Skipped : atomic write %llu (%llu)\n",
381 si->skipped_atomic_files[BG_GC] +
382 si->skipped_atomic_files[FG_GC],
383 si->skipped_atomic_files[BG_GC]);
384 seq_printf(s, "BG skip : IO: %u, Other: %u\n",
385 si->io_skip_bggc, si->other_skip_bggc);
386 seq_puts(s, "\nExtent Cache:\n");
387 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
388 si->hit_largest, si->hit_cached,
389 si->hit_rbtree);
390 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
391 !si->total_ext ? 0 :
392 div64_u64(si->hit_total * 100, si->total_ext),
393 si->hit_total, si->total_ext);
394 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
395 si->ext_tree, si->zombie_tree, si->ext_node);
396 seq_puts(s, "\nBalancing F2FS Async:\n");
397 seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
398 si->nr_dio_read, si->nr_dio_write);
399 seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
400 si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
401 seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
402 "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
403 si->nr_wb_cp_data, si->nr_wb_data,
404 si->nr_flushing, si->nr_flushed,
405 si->flush_list_empty,
406 si->nr_discarding, si->nr_discarded,
407 si->nr_discard_cmd, si->undiscard_blks);
408 seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), "
409 "volatile IO: %4d (Max. %4d)\n",
410 si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
411 si->vw_cnt, si->max_vw_cnt);
412 seq_printf(s, " - nodes: %4d in %4d\n",
413 si->ndirty_node, si->node_pages);
414 seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
415 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
416 seq_printf(s, " - datas: %4d in files:%4d\n",
417 si->ndirty_data, si->ndirty_files);
418 seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
419 si->ndirty_qdata, si->nquota_files);
420 seq_printf(s, " - meta: %4d in %4d\n",
421 si->ndirty_meta, si->meta_pages);
422 seq_printf(s, " - imeta: %4d\n",
423 si->ndirty_imeta);
424 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
425 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
426 seq_printf(s, " - free_nids: %9d/%9d\n - alloc_nids: %9d\n",
427 si->free_nids, si->avail_nids, si->alloc_nids);
428 seq_puts(s, "\nDistribution of User Blocks:");
429 seq_puts(s, " [ valid | invalid | free ]\n");
430 seq_puts(s, " [");
431
432 for (j = 0; j < si->util_valid; j++)
433 seq_putc(s, '-');
434 seq_putc(s, '|');
435
436 for (j = 0; j < si->util_invalid; j++)
437 seq_putc(s, '-');
438 seq_putc(s, '|');
439
440 for (j = 0; j < si->util_free; j++)
441 seq_putc(s, '-');
442 seq_puts(s, "]\n\n");
443 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
444 seq_printf(s, "SSR: %u blocks in %u segments\n",
445 si->block_count[SSR], si->segment_count[SSR]);
446 seq_printf(s, "LFS: %u blocks in %u segments\n",
447 si->block_count[LFS], si->segment_count[LFS]);
448
449 /* segment usage info */
450 f2fs_update_sit_info(si->sbi);
451 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
452 si->bimodal, si->avg_vblocks);
453
454 /* memory footprint */
455 update_mem_info(si->sbi);
456 seq_printf(s, "\nMemory: %llu KB\n",
457 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
458 seq_printf(s, " - static: %llu KB\n",
459 si->base_mem >> 10);
460 seq_printf(s, " - cached: %llu KB\n",
461 si->cache_mem >> 10);
462 seq_printf(s, " - paged : %llu KB\n",
463 si->page_mem >> 10);
464 }
465 mutex_unlock(&f2fs_stat_mutex);
466 return 0;
467 }
468
469 DEFINE_SHOW_ATTRIBUTE(stat);
470 #endif
471
472 int f2fs_build_stats(struct f2fs_sb_info *sbi)
473 {
474 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
475 struct f2fs_stat_info *si;
476 int i;
477
478 si = f2fs_kzalloc(sbi, sizeof(struct f2fs_stat_info), GFP_KERNEL);
479 if (!si)
480 return -ENOMEM;
481
482 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
483 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
484 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
485 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
486 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
487 si->main_area_sections = le32_to_cpu(raw_super->section_count);
488 si->main_area_zones = si->main_area_sections /
489 le32_to_cpu(raw_super->secs_per_zone);
490 si->sbi = sbi;
491 sbi->stat_info = si;
492
493 atomic64_set(&sbi->total_hit_ext, 0);
494 atomic64_set(&sbi->read_hit_rbtree, 0);
495 atomic64_set(&sbi->read_hit_largest, 0);
496 atomic64_set(&sbi->read_hit_cached, 0);
497
498 atomic_set(&sbi->inline_xattr, 0);
499 atomic_set(&sbi->inline_inode, 0);
500 atomic_set(&sbi->inline_dir, 0);
501 atomic_set(&sbi->compr_inode, 0);
502 atomic_set(&sbi->compr_blocks, 0);
503 atomic_set(&sbi->inplace_count, 0);
504 for (i = META_CP; i < META_MAX; i++)
505 atomic_set(&sbi->meta_count[i], 0);
506
507 atomic_set(&sbi->vw_cnt, 0);
508 atomic_set(&sbi->max_aw_cnt, 0);
509 atomic_set(&sbi->max_vw_cnt, 0);
510
511 mutex_lock(&f2fs_stat_mutex);
512 list_add_tail(&si->stat_list, &f2fs_stat_list);
513 mutex_unlock(&f2fs_stat_mutex);
514
515 return 0;
516 }
517
518 void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
519 {
520 struct f2fs_stat_info *si = F2FS_STAT(sbi);
521
522 mutex_lock(&f2fs_stat_mutex);
523 list_del(&si->stat_list);
524 mutex_unlock(&f2fs_stat_mutex);
525
526 kvfree(si);
527 }
528
529 void __init f2fs_create_root_stats(void)
530 {
531 #ifdef CONFIG_DEBUG_FS
532 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
533
534 debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL,
535 &stat_fops);
536 #endif
537 }
538
539 void f2fs_destroy_root_stats(void)
540 {
541 #ifdef CONFIG_DEBUG_FS
542 debugfs_remove_recursive(f2fs_debugfs_root);
543 f2fs_debugfs_root = NULL;
544 #endif
545 }
Linux with added FPC-III support