blob: fb245bd302e4a975abfc4d256a1c162f389d05ec [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 */
Chao Yu5b7ee372015-09-30 17:38:48 +080036 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);
Chao Yu029e13c2015-08-19 19:13:25 +080039 si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree;
Chao Yu5b7ee372015-09-30 17:38:48 +080040 si->total_ext = atomic64_read(&sbi->total_hit_ext);
Jaegeuk Kim7441cce2015-12-21 19:20:15 -080041 si->ext_tree = atomic_read(&sbi->total_ext_tree);
Jaegeuk Kimc00ba552015-12-31 15:24:14 -080042 si->zombie_tree = atomic_read(&sbi->total_zombie_tree);
Chao Yu4bf6fd92015-02-05 17:58:28 +080043 si->ext_node = atomic_read(&sbi->total_ext_node);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090044 si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
45 si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090046 si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
Chao Yu33fbd512015-12-17 17:14:44 +080047 si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
Chao Yu5bc994a2016-09-18 23:30:08 +080048 si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
Chao Yu33fbd512015-12-17 17:14:44 +080049 si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
50 si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
Jaegeuk Kim0f18b462016-05-20 11:10:10 -070051 si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -080052 si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
Jaegeuk Kimf5730182016-05-17 16:23:36 -070053 si->wb_bios = atomic_read(&sbi->nr_wb_bios);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090054 si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
55 si->rsvd_segs = reserved_segments(sbi);
56 si->overp_segs = overprovision_segments(sbi);
57 si->valid_count = valid_user_blocks(sbi);
Yunlei Hef83a2582016-08-18 21:01:18 +080058 si->discard_blks = discard_blocks(sbi);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090059 si->valid_node_count = valid_node_count(sbi);
60 si->valid_inode_count = valid_inode_count(sbi);
Chao Yud5e8f6c2015-07-15 17:28:53 +080061 si->inline_xattr = atomic_read(&sbi->inline_xattr);
Chao Yu03e14d52014-12-08 19:08:20 +080062 si->inline_inode = atomic_read(&sbi->inline_inode);
63 si->inline_dir = atomic_read(&sbi->inline_dir);
Jaegeuk Kim652be552016-05-10 19:13:50 -070064 si->orphans = sbi->im[ORPHAN_INO].ino_num;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090065 si->utilization = utilization(sbi);
66
67 si->free_segs = free_segments(sbi);
68 si->free_secs = free_sections(sbi);
69 si->prefree_count = prefree_segments(sbi);
70 si->dirty_count = dirty_segments(sbi);
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +090071 si->node_pages = NODE_MAPPING(sbi)->nrpages;
Gu Zheng9df27d92014-01-20 18:37:04 +080072 si->meta_pages = META_MAPPING(sbi)->nrpages;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090073 si->nats = NM_I(sbi)->nat_cnt;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -080074 si->dirty_nats = NM_I(sbi)->dirty_nat_cnt;
75 si->sits = MAIN_SEGS(sbi);
76 si->dirty_sits = SIT_I(sbi)->dirty_sentries;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +090077 si->fnids = NM_I(sbi)->fcnt;
78 si->bg_gc = sbi->bg_gc;
79 si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
80 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
81 / 2;
82 si->util_valid = (int)(written_block_count(sbi) >>
83 sbi->log_blocks_per_seg)
84 * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
85 / 2;
86 si->util_invalid = 50 - si->util_free - si->util_valid;
87 for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) {
88 struct curseg_info *curseg = CURSEG_I(sbi, i);
89 si->curseg[i] = curseg->segno;
90 si->cursec[i] = curseg->segno / sbi->segs_per_sec;
91 si->curzone[i] = si->cursec[i] / sbi->secs_per_zone;
92 }
93
94 for (i = 0; i < 2; i++) {
95 si->segment_count[i] = sbi->segment_count[i];
96 si->block_count[i] = sbi->block_count[i];
97 }
Changman Leeb9a2c252014-12-24 02:16:54 +090098
99 si->inplace_count = atomic_read(&sbi->inplace_count);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900100}
101
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +0900102/*
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900103 * This function calculates BDF of every segments
104 */
105static void update_sit_info(struct f2fs_sb_info *sbi)
106{
Gu Zheng963d4f72013-07-12 14:47:11 +0800107 struct f2fs_stat_info *si = F2FS_STAT(sbi);
Jaegeuk Kim3589a912015-05-08 16:37:28 -0700108 unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
109 unsigned long long bimodal, dist;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900110 unsigned int segno, vblocks;
111 int ndirty = 0;
112
113 bimodal = 0;
114 total_vblocks = 0;
Chao Yu3519e3f2015-12-01 11:56:52 +0800115 blks_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900116 hblks_per_sec = blks_per_sec / 2;
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700117 for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900118 vblocks = get_valid_blocks(sbi, segno, sbi->segs_per_sec);
119 dist = abs(vblocks - hblks_per_sec);
120 bimodal += dist * dist;
121
122 if (vblocks > 0 && vblocks < blks_per_sec) {
123 total_vblocks += vblocks;
124 ndirty++;
125 }
126 }
Arnd Bergmann7beb4282015-05-13 22:49:58 +0200127 dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
Chao Yu1d7e10d2015-09-23 09:25:43 +0800128 si->bimodal = div64_u64(bimodal, dist);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900129 if (si->dirty_count)
Arnd Bergmann7beb4282015-05-13 22:49:58 +0200130 si->avg_vblocks = div_u64(total_vblocks, ndirty);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900131 else
132 si->avg_vblocks = 0;
133}
134
Jaegeuk Kim0a8165d2012-11-29 13:28:09 +0900135/*
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900136 * This function calculates memory footprint.
137 */
138static void update_mem_info(struct f2fs_sb_info *sbi)
139{
Gu Zheng963d4f72013-07-12 14:47:11 +0800140 struct f2fs_stat_info *si = F2FS_STAT(sbi);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900141 unsigned npages;
Jaegeuk Kim8c402942014-11-06 15:16:04 -0800142 int i;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900143
144 if (si->base_mem)
145 goto get_cache;
146
147 si->base_mem = sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
148 si->base_mem += 2 * sizeof(struct f2fs_inode_info);
149 si->base_mem += sizeof(*sbi->ckpt);
Jaegeuk Kim523be8a2016-05-13 12:36:58 -0700150 si->base_mem += sizeof(struct percpu_counter) * NR_COUNT_TYPE;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900151
152 /* build sm */
153 si->base_mem += sizeof(struct f2fs_sm_info);
154
155 /* build sit */
156 si->base_mem += sizeof(struct sit_info);
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700157 si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
158 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
Jaegeuk Kim3e025742016-08-02 10:56:40 -0700159 si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
160 if (f2fs_discard_en(sbi))
161 si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
Jaegeuk Kim60a3b782015-02-10 16:44:29 -0800162 si->base_mem += SIT_VBLOCK_MAP_SIZE;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900163 if (sbi->segs_per_sec > 1)
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700164 si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900165 si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
166
167 /* build free segmap */
168 si->base_mem += sizeof(struct free_segmap_info);
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700169 si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
170 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900171
172 /* build curseg */
173 si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300174 si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900175
176 /* build dirty segmap */
177 si->base_mem += sizeof(struct dirty_seglist_info);
Jaegeuk Kim7cd85582014-09-23 11:23:01 -0700178 si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
179 si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900180
arter97e1c42042014-08-06 23:22:50 +0900181 /* build nm */
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900182 si->base_mem += sizeof(struct f2fs_nm_info);
183 si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
184
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900185get_cache:
Chao Yu9066c6a2015-01-10 20:09:52 +0800186 si->cache_mem = 0;
187
188 /* build gc */
189 if (sbi->gc_thread)
190 si->cache_mem += sizeof(struct f2fs_gc_kthread);
191
192 /* build merge flush thread */
193 if (SM_I(sbi)->cmd_control_info)
194 si->cache_mem += sizeof(struct flush_cmd_control);
195
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900196 /* free nids */
Chao Yu9066c6a2015-01-10 20:09:52 +0800197 si->cache_mem += NM_I(sbi)->fcnt * sizeof(struct free_nid);
198 si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry);
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800199 si->cache_mem += NM_I(sbi)->dirty_nat_cnt *
200 sizeof(struct nat_entry_set);
201 si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
Jaegeuk Kim652be552016-05-10 19:13:50 -0700202 for (i = 0; i <= ORPHAN_INO; i++)
Chao Yu67298802014-11-18 11:18:36 +0800203 si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
Jaegeuk Kim7441cce2015-12-21 19:20:15 -0800204 si->cache_mem += atomic_read(&sbi->total_ext_tree) *
205 sizeof(struct extent_tree);
Chao Yu4bf6fd92015-02-05 17:58:28 +0800206 si->cache_mem += atomic_read(&sbi->total_ext_node) *
207 sizeof(struct extent_node);
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800208
209 si->page_mem = 0;
210 npages = NODE_MAPPING(sbi)->nrpages;
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300211 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800212 npages = META_MAPPING(sbi)->nrpages;
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +0300213 si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900214}
215
216static int stat_show(struct seq_file *s, void *v)
217{
majianpeng145b04e2013-05-14 20:06:46 +0800218 struct f2fs_stat_info *si;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900219 int i = 0;
220 int j;
221
majianpeng66af62c2013-01-14 20:08:16 +0800222 mutex_lock(&f2fs_stat_mutex);
majianpeng145b04e2013-05-14 20:06:46 +0800223 list_for_each_entry(si, &f2fs_stat_list, stat_list) {
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900224 update_general_status(si->sbi);
225
Jaegeuk Kim8c11a532016-03-18 09:46:10 -0700226 seq_printf(s, "\n=====[ partition info(%pg). #%d, %s]=====\n",
227 si->sbi->sb->s_bdev, i++,
228 f2fs_readonly(si->sbi->sb) ? "RO": "RW");
Huajun Li7880cee2012-12-31 13:59:09 +0800229 seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
230 si->sit_area_segs, si->nat_area_segs);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900231 seq_printf(s, "[SSA: %d] [MAIN: %d",
232 si->ssa_area_segs, si->main_area_segs);
233 seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
234 si->overp_segs, si->rsvd_segs);
Yunlei Hef83a2582016-08-18 21:01:18 +0800235 if (test_opt(si->sbi, DISCARD))
236 seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
237 si->utilization, si->valid_count, si->discard_blks);
238 else
239 seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
240 si->utilization, si->valid_count);
241
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900242 seq_printf(s, " - Node: %u (Inode: %u, ",
243 si->valid_node_count, si->valid_inode_count);
244 seq_printf(s, "Other: %u)\n - Data: %u\n",
245 si->valid_node_count - si->valid_inode_count,
246 si->valid_count - si->valid_node_count);
Chao Yud5e8f6c2015-07-15 17:28:53 +0800247 seq_printf(s, " - Inline_xattr Inode: %u\n",
248 si->inline_xattr);
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +0900249 seq_printf(s, " - Inline_data Inode: %u\n",
250 si->inline_inode);
Jaegeuk Kim3289c062014-10-13 20:00:16 -0700251 seq_printf(s, " - Inline_dentry Inode: %u\n",
252 si->inline_dir);
Jaegeuk Kim652be552016-05-10 19:13:50 -0700253 seq_printf(s, " - Orphan Inode: %u\n",
254 si->orphans);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900255 seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
256 si->main_area_segs, si->main_area_sections,
257 si->main_area_zones);
258 seq_printf(s, " - COLD data: %d, %d, %d\n",
259 si->curseg[CURSEG_COLD_DATA],
260 si->cursec[CURSEG_COLD_DATA],
261 si->curzone[CURSEG_COLD_DATA]);
262 seq_printf(s, " - WARM data: %d, %d, %d\n",
263 si->curseg[CURSEG_WARM_DATA],
264 si->cursec[CURSEG_WARM_DATA],
265 si->curzone[CURSEG_WARM_DATA]);
266 seq_printf(s, " - HOT data: %d, %d, %d\n",
267 si->curseg[CURSEG_HOT_DATA],
268 si->cursec[CURSEG_HOT_DATA],
269 si->curzone[CURSEG_HOT_DATA]);
270 seq_printf(s, " - Dir dnode: %d, %d, %d\n",
271 si->curseg[CURSEG_HOT_NODE],
272 si->cursec[CURSEG_HOT_NODE],
273 si->curzone[CURSEG_HOT_NODE]);
274 seq_printf(s, " - File dnode: %d, %d, %d\n",
275 si->curseg[CURSEG_WARM_NODE],
276 si->cursec[CURSEG_WARM_NODE],
277 si->curzone[CURSEG_WARM_NODE]);
278 seq_printf(s, " - Indir nodes: %d, %d, %d\n",
279 si->curseg[CURSEG_COLD_NODE],
280 si->cursec[CURSEG_COLD_NODE],
281 si->curzone[CURSEG_COLD_NODE]);
282 seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
283 si->main_area_segs - si->dirty_count -
284 si->prefree_count - si->free_segs,
285 si->dirty_count);
286 seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
287 si->prefree_count, si->free_segs, si->free_secs);
Jaegeuk Kim42190d22016-01-09 13:45:17 -0800288 seq_printf(s, "CP calls: %d (BG: %d)\n",
289 si->cp_count, si->bg_cp_count);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900290 seq_printf(s, "GC calls: %d (BG: %d)\n",
291 si->call_count, si->bg_gc);
Changman Leee1235982014-12-23 08:37:39 +0900292 seq_printf(s, " - data segments : %d (%d)\n",
293 si->data_segs, si->bg_data_segs);
294 seq_printf(s, " - node segments : %d (%d)\n",
295 si->node_segs, si->bg_node_segs);
296 seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
297 si->bg_data_blks + si->bg_node_blks);
298 seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
299 si->bg_data_blks);
300 seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
301 si->bg_node_blks);
Chao Yu029e13c2015-08-19 19:13:25 +0800302 seq_puts(s, "\nExtent Cache:\n");
Chao Yu5b7ee372015-09-30 17:38:48 +0800303 seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
Chao Yu91c481f2015-08-19 19:12:20 +0800304 si->hit_largest, si->hit_cached,
Chao Yu029e13c2015-08-19 19:13:25 +0800305 si->hit_rbtree);
Chao Yu5b7ee372015-09-30 17:38:48 +0800306 seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
Chao Yu029e13c2015-08-19 19:13:25 +0800307 !si->total_ext ? 0 :
Chao Yu5b7ee372015-09-30 17:38:48 +0800308 div64_u64(si->hit_total * 100, si->total_ext),
Chao Yu029e13c2015-08-19 19:13:25 +0800309 si->hit_total, si->total_ext);
Jaegeuk Kimc00ba552015-12-31 15:24:14 -0800310 seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
311 si->ext_tree, si->zombie_tree, si->ext_node);
Chris Fries6c311ec2014-01-17 14:44:39 -0600312 seq_puts(s, "\nBalancing F2FS Async:\n");
Jaegeuk Kim523be8a2016-05-13 12:36:58 -0700313 seq_printf(s, " - inmem: %4lld, wb_bios: %4d\n",
Jaegeuk Kimf5730182016-05-17 16:23:36 -0700314 si->inmem_pages, si->wb_bios);
Jaegeuk Kim523be8a2016-05-13 12:36:58 -0700315 seq_printf(s, " - nodes: %4lld in %4d\n",
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900316 si->ndirty_node, si->node_pages);
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700317 seq_printf(s, " - dents: %4lld in dirs:%4d (%4d)\n",
318 si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
Jaegeuk Kim523be8a2016-05-13 12:36:58 -0700319 seq_printf(s, " - datas: %4lld in files:%4d\n",
Chao Yu33fbd512015-12-17 17:14:44 +0800320 si->ndirty_data, si->ndirty_files);
Jaegeuk Kim523be8a2016-05-13 12:36:58 -0700321 seq_printf(s, " - meta: %4lld in %4d\n",
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900322 si->ndirty_meta, si->meta_pages);
Chao Yu5bc994a2016-09-18 23:30:08 +0800323 seq_printf(s, " - imeta: %4lld\n",
324 si->ndirty_imeta);
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -0800325 seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
326 si->dirty_nats, si->nats, si->dirty_sits, si->sits);
Jaegeuk Kima5f420102014-03-19 13:45:52 +0900327 seq_printf(s, " - free_nids: %9d\n",
328 si->fnids);
Gu Zheng2d219c52013-07-22 16:33:32 +0800329 seq_puts(s, "\nDistribution of User Blocks:");
330 seq_puts(s, " [ valid | invalid | free ]\n");
331 seq_puts(s, " [");
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900332
333 for (j = 0; j < si->util_valid; j++)
Gu Zheng2d219c52013-07-22 16:33:32 +0800334 seq_putc(s, '-');
335 seq_putc(s, '|');
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900336
337 for (j = 0; j < si->util_invalid; j++)
Gu Zheng2d219c52013-07-22 16:33:32 +0800338 seq_putc(s, '-');
339 seq_putc(s, '|');
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900340
341 for (j = 0; j < si->util_free; j++)
Gu Zheng2d219c52013-07-22 16:33:32 +0800342 seq_putc(s, '-');
343 seq_puts(s, "]\n\n");
Changman Leeb9a2c252014-12-24 02:16:54 +0900344 seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900345 seq_printf(s, "SSR: %u blocks in %u segments\n",
346 si->block_count[SSR], si->segment_count[SSR]);
347 seq_printf(s, "LFS: %u blocks in %u segments\n",
348 si->block_count[LFS], si->segment_count[LFS]);
349
350 /* segment usage info */
351 update_sit_info(si->sbi);
352 seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
353 si->bimodal, si->avg_vblocks);
354
355 /* memory footprint */
356 update_mem_info(si->sbi);
Chao Yu9edcdab2015-09-11 14:43:52 +0800357 seq_printf(s, "\nMemory: %llu KB\n",
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800358 (si->base_mem + si->cache_mem + si->page_mem) >> 10);
Chao Yu9edcdab2015-09-11 14:43:52 +0800359 seq_printf(s, " - static: %llu KB\n",
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800360 si->base_mem >> 10);
Chao Yu9edcdab2015-09-11 14:43:52 +0800361 seq_printf(s, " - cached: %llu KB\n",
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800362 si->cache_mem >> 10);
Chao Yu9edcdab2015-09-11 14:43:52 +0800363 seq_printf(s, " - paged : %llu KB\n",
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -0800364 si->page_mem >> 10);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900365 }
majianpeng66af62c2013-01-14 20:08:16 +0800366 mutex_unlock(&f2fs_stat_mutex);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900367 return 0;
368}
369
370static int stat_open(struct inode *inode, struct file *file)
371{
372 return single_open(file, stat_show, inode->i_private);
373}
374
375static const struct file_operations stat_fops = {
376 .open = stat_open,
377 .read = seq_read,
378 .llseek = seq_lseek,
379 .release = single_release,
380};
381
Namjae Jeon4589d252013-01-15 19:58:47 +0900382int f2fs_build_stats(struct f2fs_sb_info *sbi)
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900383{
384 struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
385 struct f2fs_stat_info *si;
386
Gu Zheng963d4f72013-07-12 14:47:11 +0800387 si = kzalloc(sizeof(struct f2fs_stat_info), GFP_KERNEL);
388 if (!si)
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900389 return -ENOMEM;
390
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900391 si->all_area_segs = le32_to_cpu(raw_super->segment_count);
392 si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
393 si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
394 si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
395 si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
396 si->main_area_sections = le32_to_cpu(raw_super->section_count);
397 si->main_area_zones = si->main_area_sections /
398 le32_to_cpu(raw_super->secs_per_zone);
399 si->sbi = sbi;
Gu Zheng963d4f72013-07-12 14:47:11 +0800400 sbi->stat_info = si;
majianpeng66af62c2013-01-14 20:08:16 +0800401
Chao Yu5b7ee372015-09-30 17:38:48 +0800402 atomic64_set(&sbi->total_hit_ext, 0);
403 atomic64_set(&sbi->read_hit_rbtree, 0);
404 atomic64_set(&sbi->read_hit_largest, 0);
405 atomic64_set(&sbi->read_hit_cached, 0);
Chao Yu727edac2015-07-15 17:29:49 +0800406
Chao Yud5e8f6c2015-07-15 17:28:53 +0800407 atomic_set(&sbi->inline_xattr, 0);
Chao Yu03e14d52014-12-08 19:08:20 +0800408 atomic_set(&sbi->inline_inode, 0);
409 atomic_set(&sbi->inline_dir, 0);
Changman Leeb9a2c252014-12-24 02:16:54 +0900410 atomic_set(&sbi->inplace_count, 0);
Chao Yu03e14d52014-12-08 19:08:20 +0800411
majianpeng66af62c2013-01-14 20:08:16 +0800412 mutex_lock(&f2fs_stat_mutex);
413 list_add_tail(&si->stat_list, &f2fs_stat_list);
414 mutex_unlock(&f2fs_stat_mutex);
415
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900416 return 0;
417}
418
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900419void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
420{
Gu Zheng963d4f72013-07-12 14:47:11 +0800421 struct f2fs_stat_info *si = F2FS_STAT(sbi);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900422
majianpeng66af62c2013-01-14 20:08:16 +0800423 mutex_lock(&f2fs_stat_mutex);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900424 list_del(&si->stat_list);
majianpeng66af62c2013-01-14 20:08:16 +0800425 mutex_unlock(&f2fs_stat_mutex);
426
Gu Zheng963d4f72013-07-12 14:47:11 +0800427 kfree(si);
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900428}
429
Chao Yu787c7b8c2015-10-29 09:13:04 +0800430int __init f2fs_create_root_stats(void)
Namjae Jeon4589d252013-01-15 19:58:47 +0900431{
Younger Liuc5247232013-12-03 20:11:46 +0800432 struct dentry *file;
433
Younger Liu40e1ebe2013-12-03 21:09:29 +0800434 f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
435 if (!f2fs_debugfs_root)
Chao Yu787c7b8c2015-10-29 09:13:04 +0800436 return -ENOMEM;
Younger Liuc5247232013-12-03 20:11:46 +0800437
Younger Liu40e1ebe2013-12-03 21:09:29 +0800438 file = debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root,
Younger Liuc5247232013-12-03 20:11:46 +0800439 NULL, &stat_fops);
Gu Zheng7a6c76b2014-07-11 18:35:43 +0800440 if (!file) {
441 debugfs_remove(f2fs_debugfs_root);
442 f2fs_debugfs_root = NULL;
Chao Yu787c7b8c2015-10-29 09:13:04 +0800443 return -ENOMEM;
Gu Zheng7a6c76b2014-07-11 18:35:43 +0800444 }
Chao Yu787c7b8c2015-10-29 09:13:04 +0800445
446 return 0;
Namjae Jeon4589d252013-01-15 19:58:47 +0900447}
448
449void f2fs_destroy_root_stats(void)
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900450{
Younger Liu40e1ebe2013-12-03 21:09:29 +0800451 if (!f2fs_debugfs_root)
Younger Liuc5247232013-12-03 20:11:46 +0800452 return;
453
Younger Liu40e1ebe2013-12-03 21:09:29 +0800454 debugfs_remove_recursive(f2fs_debugfs_root);
455 f2fs_debugfs_root = NULL;
Greg Kroah-Hartman902829a2012-11-03 06:50:41 +0900456}