blob: 75176e0dd6c8b251d62d503ceb6d0b486e903afb [file] [log] [blame]
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001/*
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +09002 * 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>
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090016#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
26static LIST_HEAD(f2fs_stat_list);
Younger Liu40e1ebe2013-12-03 21:09:29 +080027static struct dentry *f2fs_debugfs_root;
majianpeng66af62c2013-01-14 20:08:16 +080028static DEFINE_MUTEX(f2fs_stat_mutex);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090029
Jaegeuk Kim25ca9232012-11-28 16:12:41 +090030static void update_general_status(struct f2fs_sb_info *sbi)
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090031{
Gu Zheng963d4f72013-07-12 14:47:11 +080032 struct f2fs_stat_info *si = F2FS_STAT(sbi);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090033 int i;
34
arter97e1c42042014-08-06 23:22:50 +090035 /* validation check of the segment numbers */
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090036 si->hit_ext = sbi->read_hit_ext;
37 si->total_ext = sbi->total_hit_ext;
Chao Yu4bf6fd92015-02-05 17:58:28 +080038 si->ext_tree = sbi->total_ext_tree;
39 si->ext_node = atomic_read(&sbi->total_ext_node);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090040 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
41 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
42 si->ndirty_dirs = sbi->n_dirty_dirs;
43 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -080044 si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
Jaegeuk Kimd24bdcb2015-01-30 16:43:11 -080045 si->wb_pages = get_pages(sbi, F2FS_WRITEBACK);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090046 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
47 si->rsvd_segs = reserved_segments(sbi);
48 si->overp_segs = overprovision_segments(sbi);
49 si->valid_count = valid_user_blocks(sbi);
50 si->valid_node_count = valid_node_count(sbi);
51 si->valid_inode_count = valid_inode_count(sbi);
Chao Yu03e14d52014-12-08 19:08:20 +080052 si->inline_inode = atomic_read(&sbi->inline_inode);
53 si->inline_dir = atomic_read(&sbi->inline_dir);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090054 si->utilization = utilization(sbi);
55
56 si->free_segs = free_segments(sbi);
57 si->free_secs = free_sections(sbi);
58 si->prefree_count = prefree_segments(sbi);
59 si->dirty_count = dirty_segments(sbi);
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +090060 si->node_pages = NODE_MAPPING(sbi)->nrpages;
Gu Zheng9df27d92014-01-20 18:37:04 +080061 si->meta_pages = META_MAPPING(sbi)->nrpages;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090062 si->nats = NM_I(sbi)->nat_cnt;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -080063 si->dirty_nats = NM_I(sbi)->dirty_nat_cnt;
64 si->sits = MAIN_SEGS(sbi);
65 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090066 si->fnids = NM_I(sbi)->fcnt;
67 si->bg_gc = sbi->bg_gc;
68 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
69 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
70 / 2;
71 si->util_valid = (int)(written_block_count(sbi) >>
72 sbi->log_blocks_per_seg)
73 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
74 / 2;
75 si->util_invalid = 50 - si->util_free - si->util_valid;
76 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) {
77 struct curseg_info *curseg = CURSEG_I(sbi, i);
78 si->curseg[i] = curseg->segno;
79 si->cursec[i] = curseg->segno / sbi->segs_per_sec;
80 si->curzone[i] = si->cursec[i] / sbi->secs_per_zone;
81 }
82
83 for (i = 0; i < 2; i++) {
84 si->segment_count[i] = sbi->segment_count[i];
85 si->block_count[i] = sbi->block_count[i];
86 }
Changman Leeb9a2c252014-12-24 02:16:54 +090087
88 si->inplace_count = atomic_read(&sbi->inplace_count);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090089}
90
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +090091/*
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090092 * This function calculates BDF of every segments
93 */
94static void update_sit_info(struct f2fs_sb_info *sbi)
95{
Gu Zheng963d4f72013-07-12 14:47:11 +080096 struct f2fs_stat_info *si = F2FS_STAT(sbi);
Jaegeuk Kim3589a912015-05-08 16:37:28 -070097 unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
98 unsigned long long bimodal, dist;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090099 unsigned int segno, vblocks;
100 int ndirty = 0;
101
102 bimodal = 0;
103 total_vblocks = 0;
104 blks_per_sec = sbi->segs_per_sec * (1 << sbi->log_blocks_per_seg);
105 hblks_per_sec = blks_per_sec / 2;
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700106 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900107 vblocks = get_valid_blocks(sbi, segno, sbi->segs_per_sec);
108 dist = abs(vblocks - hblks_per_sec);
109 bimodal += dist * dist;
110
111 if (vblocks > 0 && vblocks < blks_per_sec) {
112 total_vblocks += vblocks;
113 ndirty++;
114 }
115 }
Arnd Bergmann7beb4282015-05-13 22:49:58 +0200116 dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
117 si->bimodal = div_u64(bimodal, dist);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900118 if (si->dirty_count)
Arnd Bergmann7beb4282015-05-13 22:49:58 +0200119 si->avg_vblocks = div_u64(total_vblocks, ndirty);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900120 else
121 si->avg_vblocks = 0;
122}
123
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +0900124/*
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900125 * This function calculates memory footprint.
126 */
127static void update_mem_info(struct f2fs_sb_info *sbi)
128{
Gu Zheng963d4f72013-07-12 14:47:11 +0800129 struct f2fs_stat_info *si = F2FS_STAT(sbi);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900130 unsigned npages;
Jaegeuk Kim8c402942014-11-06 15:16:04 -0800131 int i;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900132
133 if (si->base_mem)
134 goto get_cache;
135
136 si->base_mem = sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
137 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
138 si->base_mem += sizeof(*sbi->ckpt);
139
140 /* build sm */
141 si->base_mem += sizeof(struct f2fs_sm_info);
142
143 /* build sit */
144 si->base_mem += sizeof(struct sit_info);
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700145 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
146 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700147 si->base_mem += 3 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
Jaegeuk Kim60a3b782015-02-10 16:44:29 -0800148 si->base_mem += SIT_VBLOCK_MAP_SIZE;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900149 if (sbi->segs_per_sec > 1)
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700150 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900151 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
152
153 /* build free segmap */
154 si->base_mem += sizeof(struct free_segmap_info);
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700155 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
156 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900157
158 /* build curseg */
159 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
160 si->base_mem += PAGE_CACHE_SIZE * NR_CURSEG_TYPE;
161
162 /* build dirty segmap */
163 si->base_mem += sizeof(struct dirty_seglist_info);
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700164 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
165 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900166
arter97e1c42042014-08-06 23:22:50 +0900167 /* build nm */
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900168 si->base_mem += sizeof(struct f2fs_nm_info);
169 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
170
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900171get_cache:
Chao Yu9066c6a2015-01-10 20:09:52 +0800172 si->cache_mem = 0;
173
174 /* build gc */
175 if (sbi->gc_thread)
176 si->cache_mem += sizeof(struct f2fs_gc_kthread);
177
178 /* build merge flush thread */
179 if (SM_I(sbi)->cmd_control_info)
180 si->cache_mem += sizeof(struct flush_cmd_control);
181
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900182 /* free nids */
Chao Yu9066c6a2015-01-10 20:09:52 +0800183 si->cache_mem += NM_I(sbi)->fcnt * sizeof(struct free_nid);
184 si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry);
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800185 si->cache_mem += NM_I(sbi)->dirty_nat_cnt *
186 sizeof(struct nat_entry_set);
187 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
Chao Yu06292072014-12-29 15:56:18 +0800188 si->cache_mem += sbi->n_dirty_dirs * sizeof(struct inode_entry);
Jaegeuk Kim8c402942014-11-06 15:16:04 -0800189 for (i = 0; i <= UPDATE_INO; i++)
Chao Yu67298802014-11-18 11:18:36 +0800190 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
Chao Yu4bf6fd92015-02-05 17:58:28 +0800191 si->cache_mem += sbi->total_ext_tree * sizeof(struct extent_tree);
192 si->cache_mem += atomic_read(&sbi->total_ext_node) *
193 sizeof(struct extent_node);
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800194
195 si->page_mem = 0;
196 npages = NODE_MAPPING(sbi)->nrpages;
197 si->page_mem += npages << PAGE_CACHE_SHIFT;
198 npages = META_MAPPING(sbi)->nrpages;
199 si->page_mem += npages << PAGE_CACHE_SHIFT;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900200}
201
202static int stat_show(struct seq_file *s, void *v)
203{
majianpeng145b04e2013-05-14 20:06:46 +0800204 struct f2fs_stat_info *si;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900205 int i = 0;
206 int j;
207
majianpeng66af62c2013-01-14 20:08:16 +0800208 mutex_lock(&f2fs_stat_mutex);
majianpeng145b04e2013-05-14 20:06:46 +0800209 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
majianpengf83759e2013-02-01 15:00:30 +0800210 char devname[BDEVNAME_SIZE];
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900211
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900212 update_general_status(si->sbi);
213
majianpengf83759e2013-02-01 15:00:30 +0800214 seq_printf(s, "\n=====[ partition info(%s). #%d ]=====\n",
215 bdevname(si->sbi->sb->s_bdev, devname), i++);
Huajun Li7880cee2012-12-31 13:59:09 +0800216 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
217 si->sit_area_segs, si->nat_area_segs);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900218 seq_printf(s, "[SSA: %d] [MAIN: %d",
219 si->ssa_area_segs, si->main_area_segs);
220 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
221 si->overp_segs, si->rsvd_segs);
222 seq_printf(s, "Utilization: %d%% (%d valid blocks)\n",
223 si->utilization, si->valid_count);
224 seq_printf(s, " - Node: %u (Inode: %u, ",
225 si->valid_node_count, si->valid_inode_count);
226 seq_printf(s, "Other: %u)\n - Data: %u\n",
227 si->valid_node_count - si->valid_inode_count,
228 si->valid_count - si->valid_node_count);
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +0900229 seq_printf(s, " - Inline_data Inode: %u\n",
230 si->inline_inode);
Jaegeuk Kim3289c062014-10-13 20:00:16 -0700231 seq_printf(s, " - Inline_dentry Inode: %u\n",
232 si->inline_dir);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900233 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
234 si->main_area_segs, si->main_area_sections,
235 si->main_area_zones);
236 seq_printf(s, " - COLD data: %d, %d, %d\n",
237 si->curseg[CURSEG_COLD_DATA],
238 si->cursec[CURSEG_COLD_DATA],
239 si->curzone[CURSEG_COLD_DATA]);
240 seq_printf(s, " - WARM data: %d, %d, %d\n",
241 si->curseg[CURSEG_WARM_DATA],
242 si->cursec[CURSEG_WARM_DATA],
243 si->curzone[CURSEG_WARM_DATA]);
244 seq_printf(s, " - HOT data: %d, %d, %d\n",
245 si->curseg[CURSEG_HOT_DATA],
246 si->cursec[CURSEG_HOT_DATA],
247 si->curzone[CURSEG_HOT_DATA]);
248 seq_printf(s, " - Dir dnode: %d, %d, %d\n",
249 si->curseg[CURSEG_HOT_NODE],
250 si->cursec[CURSEG_HOT_NODE],
251 si->curzone[CURSEG_HOT_NODE]);
252 seq_printf(s, " - File dnode: %d, %d, %d\n",
253 si->curseg[CURSEG_WARM_NODE],
254 si->cursec[CURSEG_WARM_NODE],
255 si->curzone[CURSEG_WARM_NODE]);
256 seq_printf(s, " - Indir nodes: %d, %d, %d\n",
257 si->curseg[CURSEG_COLD_NODE],
258 si->cursec[CURSEG_COLD_NODE],
259 si->curzone[CURSEG_COLD_NODE]);
260 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
261 si->main_area_segs - si->dirty_count -
262 si->prefree_count - si->free_segs,
263 si->dirty_count);
264 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
265 si->prefree_count, si->free_segs, si->free_secs);
Changman Lee942e0be2014-02-13 15:12:29 +0900266 seq_printf(s, "CP calls: %d\n", si->cp_count);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900267 seq_printf(s, "GC calls: %d (BG: %d)\n",
268 si->call_count, si->bg_gc);
Changman Leee1235982014-12-23 08:37:39 +0900269 seq_printf(s, " - data segments : %d (%d)\n",
270 si->data_segs, si->bg_data_segs);
271 seq_printf(s, " - node segments : %d (%d)\n",
272 si->node_segs, si->bg_node_segs);
273 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
274 si->bg_data_blks + si->bg_node_blks);
275 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
276 si->bg_data_blks);
277 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
278 si->bg_node_blks);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900279 seq_printf(s, "\nExtent Hit Ratio: %d / %d\n",
280 si->hit_ext, si->total_ext);
Chao Yu4bf6fd92015-02-05 17:58:28 +0800281 seq_printf(s, "\nExtent Tree Count: %d\n", si->ext_tree);
282 seq_printf(s, "\nExtent Node Count: %d\n", si->ext_node);
Chris Fries6c311ec2014-01-17 14:44:39 -0600283 seq_puts(s, "\nBalancing F2FS Async:\n");
Jaegeuk Kimd24bdcb2015-01-30 16:43:11 -0800284 seq_printf(s, " - inmem: %4d, wb: %4d\n",
285 si->inmem_pages, si->wb_pages);
Changman Lee499046a2014-01-13 10:34:18 +0900286 seq_printf(s, " - nodes: %4d in %4d\n",
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900287 si->ndirty_node, si->node_pages);
Changman Lee499046a2014-01-13 10:34:18 +0900288 seq_printf(s, " - dents: %4d in dirs:%4d\n",
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900289 si->ndirty_dent, si->ndirty_dirs);
Changman Lee499046a2014-01-13 10:34:18 +0900290 seq_printf(s, " - meta: %4d in %4d\n",
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900291 si->ndirty_meta, si->meta_pages);
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -0800292 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
293 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
Jaegeuk Kima5f420102014-03-19 13:45:52 +0900294 seq_printf(s, " - free_nids: %9d\n",
295 si->fnids);
Gu Zheng2d219c52013-07-22 16:33:32 +0800296 seq_puts(s, "\nDistribution of User Blocks:");
297 seq_puts(s, " [ valid | invalid | free ]\n");
298 seq_puts(s, " [");
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900299
300 for (j = 0; j < si->util_valid; j++)
Gu Zheng2d219c52013-07-22 16:33:32 +0800301 seq_putc(s, '-');
302 seq_putc(s, '|');
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900303
304 for (j = 0; j < si->util_invalid; j++)
Gu Zheng2d219c52013-07-22 16:33:32 +0800305 seq_putc(s, '-');
306 seq_putc(s, '|');
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900307
308 for (j = 0; j < si->util_free; j++)
Gu Zheng2d219c52013-07-22 16:33:32 +0800309 seq_putc(s, '-');
310 seq_puts(s, "]\n\n");
Changman Leeb9a2c252014-12-24 02:16:54 +0900311 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900312 seq_printf(s, "SSR: %u blocks in %u segments\n",
313 si->block_count[SSR], si->segment_count[SSR]);
314 seq_printf(s, "LFS: %u blocks in %u segments\n",
315 si->block_count[LFS], si->segment_count[LFS]);
316
317 /* segment usage info */
318 update_sit_info(si->sbi);
319 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
320 si->bimodal, si->avg_vblocks);
321
322 /* memory footprint */
323 update_mem_info(si->sbi);
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800324 seq_printf(s, "\nMemory: %u KB\n",
325 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
326 seq_printf(s, " - static: %u KB\n",
327 si->base_mem >> 10);
328 seq_printf(s, " - cached: %u KB\n",
329 si->cache_mem >> 10);
330 seq_printf(s, " - paged : %u KB\n",
331 si->page_mem >> 10);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900332 }
majianpeng66af62c2013-01-14 20:08:16 +0800333 mutex_unlock(&f2fs_stat_mutex);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900334 return 0;
335}
336
337static int stat_open(struct inode *inode, struct file *file)
338{
339 return single_open(file, stat_show, inode->i_private);
340}
341
342static const struct file_operations stat_fops = {
343 .open = stat_open,
344 .read = seq_read,
345 .llseek = seq_lseek,
346 .release = single_release,
347};
348
Namjae Jeon4589d252013-01-15 19:58:47 +0900349int f2fs_build_stats(struct f2fs_sb_info *sbi)
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900350{
351 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
352 struct f2fs_stat_info *si;
353
Gu Zheng963d4f72013-07-12 14:47:11 +0800354 si = kzalloc(sizeof(struct f2fs_stat_info), GFP_KERNEL);
355 if (!si)
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900356 return -ENOMEM;
357
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900358 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
359 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
360 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
361 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
362 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
363 si->main_area_sections = le32_to_cpu(raw_super->section_count);
364 si->main_area_zones = si->main_area_sections /
365 le32_to_cpu(raw_super->secs_per_zone);
366 si->sbi = sbi;
Gu Zheng963d4f72013-07-12 14:47:11 +0800367 sbi->stat_info = si;
majianpeng66af62c2013-01-14 20:08:16 +0800368
Chao Yu03e14d52014-12-08 19:08:20 +0800369 atomic_set(&sbi->inline_inode, 0);
370 atomic_set(&sbi->inline_dir, 0);
Changman Leeb9a2c252014-12-24 02:16:54 +0900371 atomic_set(&sbi->inplace_count, 0);
Chao Yu03e14d52014-12-08 19:08:20 +0800372
majianpeng66af62c2013-01-14 20:08:16 +0800373 mutex_lock(&f2fs_stat_mutex);
374 list_add_tail(&si->stat_list, &f2fs_stat_list);
375 mutex_unlock(&f2fs_stat_mutex);
376
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900377 return 0;
378}
379
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900380void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
381{
Gu Zheng963d4f72013-07-12 14:47:11 +0800382 struct f2fs_stat_info *si = F2FS_STAT(sbi);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900383
majianpeng66af62c2013-01-14 20:08:16 +0800384 mutex_lock(&f2fs_stat_mutex);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900385 list_del(&si->stat_list);
majianpeng66af62c2013-01-14 20:08:16 +0800386 mutex_unlock(&f2fs_stat_mutex);
387
Gu Zheng963d4f72013-07-12 14:47:11 +0800388 kfree(si);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900389}
390
Namjae Jeon4589d252013-01-15 19:58:47 +0900391void __init f2fs_create_root_stats(void)
392{
Younger Liuc5247232013-12-03 20:11:46 +0800393 struct dentry *file;
394
Younger Liu40e1ebe2013-12-03 21:09:29 +0800395 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
396 if (!f2fs_debugfs_root)
Gu Zheng7a6c76b2014-07-11 18:35:43 +0800397 return;
Younger Liuc5247232013-12-03 20:11:46 +0800398
Younger Liu40e1ebe2013-12-03 21:09:29 +0800399 file = debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root,
Younger Liuc5247232013-12-03 20:11:46 +0800400 NULL, &stat_fops);
Gu Zheng7a6c76b2014-07-11 18:35:43 +0800401 if (!file) {
402 debugfs_remove(f2fs_debugfs_root);
403 f2fs_debugfs_root = NULL;
404 }
Namjae Jeon4589d252013-01-15 19:58:47 +0900405}
406
407void f2fs_destroy_root_stats(void)
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900408{
Younger Liu40e1ebe2013-12-03 21:09:29 +0800409 if (!f2fs_debugfs_root)
Younger Liuc5247232013-12-03 20:11:46 +0800410 return;
411
Younger Liu40e1ebe2013-12-03 21:09:29 +0800412 debugfs_remove_recursive(f2fs_debugfs_root);
413 f2fs_debugfs_root = NULL;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900414}