1 // SPDX-License-Identifier: GPL-2.0
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>
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>
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
);
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
) {
63 atomic_read(&SM_I(sbi
)->fcc_info
->issued_flush
);
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
) {
71 atomic_read(&SM_I(sbi
)->dcc_info
->issued_discard
);
73 atomic_read(&SM_I(sbi
)->dcc_info
->issing_discard
);
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
)
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
)
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
;
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
;
162 dist
= div_u64(MAIN_SECS(sbi
) * hblks_per_sec
* hblks_per_sec
, 100);
163 si
->bimodal
= div64_u64(bimodal
, dist
);
165 si
->avg_vblocks
= div_u64(total_vblocks
, ndirty
);
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
);
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
);
191 si
->base_mem
+= sizeof(struct f2fs_sm_info
);
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
));
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
));
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);
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
);
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
);
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
;
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
);
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",
300 seq_printf(s
, " - Inline_data Inode: %u\n",
302 seq_printf(s
, " - Inline_dentry Inode: %u\n",
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
,
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
,
358 seq_printf(s
, " - node blocks : %d (%d)\n", si
->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
,
370 seq_printf(s
, " - Hit Ratio: %llu%% (%llu / %llu)\n",
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",
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");
410 for (j
= 0; j
< si
->util_valid
; j
++)
414 for (j
= 0; j
< si
->util_invalid
; j
++)
418 for (j
= 0; j
< si
->util_free
; j
++)
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",
438 seq_printf(s
, " - cached: %llu KB\n",
439 si
->cache_mem
>> 10);
440 seq_printf(s
, " - paged : %llu KB\n",
443 mutex_unlock(&f2fs_stat_mutex
);
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
,
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
;
466 si
= f2fs_kzalloc(sbi
, sizeof(struct f2fs_stat_info
), GFP_KERNEL
);
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
);
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
);
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
);
516 int __init
f2fs_create_root_stats(void)
520 f2fs_debugfs_root
= debugfs_create_dir("f2fs", NULL
);
521 if (!f2fs_debugfs_root
)
524 file
= debugfs_create_file("status", S_IRUGO
, f2fs_debugfs_root
,
527 debugfs_remove(f2fs_debugfs_root
);
528 f2fs_debugfs_root
= NULL
;
535 void f2fs_destroy_root_stats(void)
537 if (!f2fs_debugfs_root
)
540 debugfs_remove_recursive(f2fs_debugfs_root
);
541 f2fs_debugfs_root
= NULL
;