5f32366a29
Adds to count discard command entry and show the number in debugfs, also fix to add cost of discard command cache into total comsumed memory footprint. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
508 lines
17 KiB
C
508 lines
17 KiB
C
/*
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* f2fs debugging statistics
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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* Copyright (c) 2012 Linux Foundation
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* Copyright (c) 2012 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/fs.h>
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#include <linux/backing-dev.h>
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#include <linux/f2fs_fs.h>
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#include <linux/blkdev.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include "f2fs.h"
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#include "node.h"
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#include "segment.h"
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#include "gc.h"
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static LIST_HEAD(f2fs_stat_list);
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static struct dentry *f2fs_debugfs_root;
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static DEFINE_MUTEX(f2fs_stat_mutex);
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static void update_general_status(struct f2fs_sb_info *sbi)
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{
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struct f2fs_stat_info *si = F2FS_STAT(sbi);
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int i;
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/* validation check of the segment numbers */
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si->hit_largest = atomic64_read(&sbi->read_hit_largest);
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si->hit_cached = atomic64_read(&sbi->read_hit_cached);
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si->hit_rbtree = atomic64_read(&sbi->read_hit_rbtree);
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si->hit_total = si->hit_largest + si->hit_cached + si->hit_rbtree;
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si->total_ext = atomic64_read(&sbi->total_hit_ext);
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si->ext_tree = atomic_read(&sbi->total_ext_tree);
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si->zombie_tree = atomic_read(&sbi->total_zombie_tree);
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si->ext_node = atomic_read(&sbi->total_ext_node);
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si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
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si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
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si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
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si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
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si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
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si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
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si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
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si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
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si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
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si->aw_cnt = atomic_read(&sbi->aw_cnt);
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si->vw_cnt = atomic_read(&sbi->vw_cnt);
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si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
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si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt);
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si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
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si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
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if (SM_I(sbi) && SM_I(sbi)->fcc_info) {
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si->nr_flushed =
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atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
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si->nr_flushing =
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atomic_read(&SM_I(sbi)->fcc_info->issing_flush);
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}
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if (SM_I(sbi) && SM_I(sbi)->dcc_info) {
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si->nr_discarded =
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atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
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si->nr_discarding =
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atomic_read(&SM_I(sbi)->dcc_info->issing_discard);
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si->nr_discard_cmd =
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atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
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}
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si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
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si->rsvd_segs = reserved_segments(sbi);
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si->overp_segs = overprovision_segments(sbi);
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si->valid_count = valid_user_blocks(sbi);
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si->discard_blks = discard_blocks(sbi);
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si->valid_node_count = valid_node_count(sbi);
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si->valid_inode_count = valid_inode_count(sbi);
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si->inline_xattr = atomic_read(&sbi->inline_xattr);
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si->inline_inode = atomic_read(&sbi->inline_inode);
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si->inline_dir = atomic_read(&sbi->inline_dir);
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si->append = sbi->im[APPEND_INO].ino_num;
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si->update = sbi->im[UPDATE_INO].ino_num;
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si->orphans = sbi->im[ORPHAN_INO].ino_num;
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si->utilization = utilization(sbi);
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si->free_segs = free_segments(sbi);
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si->free_secs = free_sections(sbi);
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si->prefree_count = prefree_segments(sbi);
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si->dirty_count = dirty_segments(sbi);
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si->node_pages = NODE_MAPPING(sbi)->nrpages;
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si->meta_pages = META_MAPPING(sbi)->nrpages;
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si->nats = NM_I(sbi)->nat_cnt;
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si->dirty_nats = NM_I(sbi)->dirty_nat_cnt;
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si->sits = MAIN_SEGS(sbi);
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si->dirty_sits = SIT_I(sbi)->dirty_sentries;
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si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID_LIST];
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si->alloc_nids = NM_I(sbi)->nid_cnt[ALLOC_NID_LIST];
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si->bg_gc = sbi->bg_gc;
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si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
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* 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
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/ 2;
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si->util_valid = (int)(written_block_count(sbi) >>
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sbi->log_blocks_per_seg)
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* 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
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/ 2;
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si->util_invalid = 50 - si->util_free - si->util_valid;
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for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_NODE; i++) {
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struct curseg_info *curseg = CURSEG_I(sbi, i);
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si->curseg[i] = curseg->segno;
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si->cursec[i] = curseg->segno / sbi->segs_per_sec;
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si->curzone[i] = si->cursec[i] / sbi->secs_per_zone;
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}
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for (i = 0; i < 2; i++) {
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si->segment_count[i] = sbi->segment_count[i];
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si->block_count[i] = sbi->block_count[i];
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}
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si->inplace_count = atomic_read(&sbi->inplace_count);
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}
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/*
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* This function calculates BDF of every segments
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*/
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static void update_sit_info(struct f2fs_sb_info *sbi)
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{
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struct f2fs_stat_info *si = F2FS_STAT(sbi);
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unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
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unsigned long long bimodal, dist;
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unsigned int segno, vblocks;
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int ndirty = 0;
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bimodal = 0;
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total_vblocks = 0;
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blks_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
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hblks_per_sec = blks_per_sec / 2;
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for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
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vblocks = get_valid_blocks(sbi, segno, sbi->segs_per_sec);
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dist = abs(vblocks - hblks_per_sec);
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bimodal += dist * dist;
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if (vblocks > 0 && vblocks < blks_per_sec) {
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total_vblocks += vblocks;
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ndirty++;
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}
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}
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dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
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si->bimodal = div64_u64(bimodal, dist);
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if (si->dirty_count)
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si->avg_vblocks = div_u64(total_vblocks, ndirty);
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else
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si->avg_vblocks = 0;
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}
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/*
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* This function calculates memory footprint.
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*/
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static void update_mem_info(struct f2fs_sb_info *sbi)
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{
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struct f2fs_stat_info *si = F2FS_STAT(sbi);
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unsigned npages;
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int i;
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if (si->base_mem)
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goto get_cache;
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/* build stat */
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si->base_mem = sizeof(struct f2fs_stat_info);
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/* build superblock */
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si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
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si->base_mem += 2 * sizeof(struct f2fs_inode_info);
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si->base_mem += sizeof(*sbi->ckpt);
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si->base_mem += sizeof(struct percpu_counter) * NR_COUNT_TYPE;
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/* build sm */
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si->base_mem += sizeof(struct f2fs_sm_info);
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/* build sit */
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si->base_mem += sizeof(struct sit_info);
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si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
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si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
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si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
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if (f2fs_discard_en(sbi))
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si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
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si->base_mem += SIT_VBLOCK_MAP_SIZE;
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if (sbi->segs_per_sec > 1)
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si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
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si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
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/* build free segmap */
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si->base_mem += sizeof(struct free_segmap_info);
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si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
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si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
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/* build curseg */
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si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
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si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
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/* build dirty segmap */
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si->base_mem += sizeof(struct dirty_seglist_info);
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si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
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si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
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/* build nm */
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si->base_mem += sizeof(struct f2fs_nm_info);
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si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
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si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
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si->base_mem += NM_I(sbi)->nat_blocks * NAT_ENTRY_BITMAP_SIZE;
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si->base_mem += NM_I(sbi)->nat_blocks / 8;
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si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
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get_cache:
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si->cache_mem = 0;
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/* build gc */
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if (sbi->gc_thread)
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si->cache_mem += sizeof(struct f2fs_gc_kthread);
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/* build merge flush thread */
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if (SM_I(sbi)->fcc_info)
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si->cache_mem += sizeof(struct flush_cmd_control);
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if (SM_I(sbi)->dcc_info) {
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si->cache_mem += sizeof(struct discard_cmd_control);
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si->cache_mem += sizeof(struct discard_cmd) *
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atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
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}
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/* free nids */
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si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID_LIST] +
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NM_I(sbi)->nid_cnt[ALLOC_NID_LIST]) *
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sizeof(struct free_nid);
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si->cache_mem += NM_I(sbi)->nat_cnt * sizeof(struct nat_entry);
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si->cache_mem += NM_I(sbi)->dirty_nat_cnt *
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sizeof(struct nat_entry_set);
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si->cache_mem += si->inmem_pages * sizeof(struct inmem_pages);
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for (i = 0; i <= ORPHAN_INO; i++)
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si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
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si->cache_mem += atomic_read(&sbi->total_ext_tree) *
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sizeof(struct extent_tree);
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si->cache_mem += atomic_read(&sbi->total_ext_node) *
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sizeof(struct extent_node);
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si->page_mem = 0;
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npages = NODE_MAPPING(sbi)->nrpages;
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si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
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npages = META_MAPPING(sbi)->nrpages;
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si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
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}
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static int stat_show(struct seq_file *s, void *v)
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{
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struct f2fs_stat_info *si;
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int i = 0;
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int j;
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mutex_lock(&f2fs_stat_mutex);
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list_for_each_entry(si, &f2fs_stat_list, stat_list) {
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update_general_status(si->sbi);
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seq_printf(s, "\n=====[ partition info(%pg). #%d, %s]=====\n",
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si->sbi->sb->s_bdev, i++,
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f2fs_readonly(si->sbi->sb) ? "RO": "RW");
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seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
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si->sit_area_segs, si->nat_area_segs);
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seq_printf(s, "[SSA: %d] [MAIN: %d",
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si->ssa_area_segs, si->main_area_segs);
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seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
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si->overp_segs, si->rsvd_segs);
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if (test_opt(si->sbi, DISCARD))
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seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
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si->utilization, si->valid_count, si->discard_blks);
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else
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seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
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si->utilization, si->valid_count);
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seq_printf(s, " - Node: %u (Inode: %u, ",
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si->valid_node_count, si->valid_inode_count);
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seq_printf(s, "Other: %u)\n - Data: %u\n",
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si->valid_node_count - si->valid_inode_count,
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si->valid_count - si->valid_node_count);
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seq_printf(s, " - Inline_xattr Inode: %u\n",
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si->inline_xattr);
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seq_printf(s, " - Inline_data Inode: %u\n",
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si->inline_inode);
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seq_printf(s, " - Inline_dentry Inode: %u\n",
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si->inline_dir);
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seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
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si->orphans, si->append, si->update);
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seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
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si->main_area_segs, si->main_area_sections,
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si->main_area_zones);
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seq_printf(s, " - COLD data: %d, %d, %d\n",
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si->curseg[CURSEG_COLD_DATA],
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si->cursec[CURSEG_COLD_DATA],
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si->curzone[CURSEG_COLD_DATA]);
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seq_printf(s, " - WARM data: %d, %d, %d\n",
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si->curseg[CURSEG_WARM_DATA],
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si->cursec[CURSEG_WARM_DATA],
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si->curzone[CURSEG_WARM_DATA]);
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seq_printf(s, " - HOT data: %d, %d, %d\n",
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si->curseg[CURSEG_HOT_DATA],
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si->cursec[CURSEG_HOT_DATA],
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si->curzone[CURSEG_HOT_DATA]);
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seq_printf(s, " - Dir dnode: %d, %d, %d\n",
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si->curseg[CURSEG_HOT_NODE],
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si->cursec[CURSEG_HOT_NODE],
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si->curzone[CURSEG_HOT_NODE]);
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seq_printf(s, " - File dnode: %d, %d, %d\n",
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si->curseg[CURSEG_WARM_NODE],
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si->cursec[CURSEG_WARM_NODE],
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si->curzone[CURSEG_WARM_NODE]);
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seq_printf(s, " - Indir nodes: %d, %d, %d\n",
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si->curseg[CURSEG_COLD_NODE],
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si->cursec[CURSEG_COLD_NODE],
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si->curzone[CURSEG_COLD_NODE]);
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seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
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si->main_area_segs - si->dirty_count -
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si->prefree_count - si->free_segs,
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si->dirty_count);
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seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
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si->prefree_count, si->free_segs, si->free_secs);
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seq_printf(s, "CP calls: %d (BG: %d)\n",
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si->cp_count, si->bg_cp_count);
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seq_printf(s, "GC calls: %d (BG: %d)\n",
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si->call_count, si->bg_gc);
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seq_printf(s, " - data segments : %d (%d)\n",
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si->data_segs, si->bg_data_segs);
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seq_printf(s, " - node segments : %d (%d)\n",
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si->node_segs, si->bg_node_segs);
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seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
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si->bg_data_blks + si->bg_node_blks);
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seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
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si->bg_data_blks);
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seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
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si->bg_node_blks);
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seq_puts(s, "\nExtent Cache:\n");
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seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
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si->hit_largest, si->hit_cached,
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si->hit_rbtree);
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seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
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!si->total_ext ? 0 :
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div64_u64(si->hit_total * 100, si->total_ext),
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si->hit_total, si->total_ext);
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seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
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si->ext_tree, si->zombie_tree, si->ext_node);
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seq_puts(s, "\nBalancing F2FS Async:\n");
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seq_printf(s, " - IO (CP: %4d, Data: %4d, Flush: (%4d %4d), "
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"Discard: (%4d %4d)) cmd: %4d\n",
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si->nr_wb_cp_data, si->nr_wb_data,
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si->nr_flushing, si->nr_flushed,
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si->nr_discarding, si->nr_discarded,
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si->nr_discard_cmd);
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seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), "
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"volatile IO: %4d (Max. %4d)\n",
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si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
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si->vw_cnt, si->max_vw_cnt);
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seq_printf(s, " - nodes: %4d in %4d\n",
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si->ndirty_node, si->node_pages);
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seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
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si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
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seq_printf(s, " - datas: %4d in files:%4d\n",
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si->ndirty_data, si->ndirty_files);
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seq_printf(s, " - meta: %4d in %4d\n",
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si->ndirty_meta, si->meta_pages);
|
|
seq_printf(s, " - imeta: %4d\n",
|
|
si->ndirty_imeta);
|
|
seq_printf(s, " - NATs: %9d/%9d\n - SITs: %9d/%9d\n",
|
|
si->dirty_nats, si->nats, si->dirty_sits, si->sits);
|
|
seq_printf(s, " - free_nids: %9d, alloc_nids: %9d\n",
|
|
si->free_nids, si->alloc_nids);
|
|
seq_puts(s, "\nDistribution of User Blocks:");
|
|
seq_puts(s, " [ valid | invalid | free ]\n");
|
|
seq_puts(s, " [");
|
|
|
|
for (j = 0; j < si->util_valid; j++)
|
|
seq_putc(s, '-');
|
|
seq_putc(s, '|');
|
|
|
|
for (j = 0; j < si->util_invalid; j++)
|
|
seq_putc(s, '-');
|
|
seq_putc(s, '|');
|
|
|
|
for (j = 0; j < si->util_free; j++)
|
|
seq_putc(s, '-');
|
|
seq_puts(s, "]\n\n");
|
|
seq_printf(s, "IPU: %u blocks\n", si->inplace_count);
|
|
seq_printf(s, "SSR: %u blocks in %u segments\n",
|
|
si->block_count[SSR], si->segment_count[SSR]);
|
|
seq_printf(s, "LFS: %u blocks in %u segments\n",
|
|
si->block_count[LFS], si->segment_count[LFS]);
|
|
|
|
/* segment usage info */
|
|
update_sit_info(si->sbi);
|
|
seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
|
|
si->bimodal, si->avg_vblocks);
|
|
|
|
/* memory footprint */
|
|
update_mem_info(si->sbi);
|
|
seq_printf(s, "\nMemory: %llu KB\n",
|
|
(si->base_mem + si->cache_mem + si->page_mem) >> 10);
|
|
seq_printf(s, " - static: %llu KB\n",
|
|
si->base_mem >> 10);
|
|
seq_printf(s, " - cached: %llu KB\n",
|
|
si->cache_mem >> 10);
|
|
seq_printf(s, " - paged : %llu KB\n",
|
|
si->page_mem >> 10);
|
|
}
|
|
mutex_unlock(&f2fs_stat_mutex);
|
|
return 0;
|
|
}
|
|
|
|
static int stat_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, stat_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations stat_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = stat_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
int f2fs_build_stats(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
|
|
struct f2fs_stat_info *si;
|
|
|
|
si = kzalloc(sizeof(struct f2fs_stat_info), GFP_KERNEL);
|
|
if (!si)
|
|
return -ENOMEM;
|
|
|
|
si->all_area_segs = le32_to_cpu(raw_super->segment_count);
|
|
si->sit_area_segs = le32_to_cpu(raw_super->segment_count_sit);
|
|
si->nat_area_segs = le32_to_cpu(raw_super->segment_count_nat);
|
|
si->ssa_area_segs = le32_to_cpu(raw_super->segment_count_ssa);
|
|
si->main_area_segs = le32_to_cpu(raw_super->segment_count_main);
|
|
si->main_area_sections = le32_to_cpu(raw_super->section_count);
|
|
si->main_area_zones = si->main_area_sections /
|
|
le32_to_cpu(raw_super->secs_per_zone);
|
|
si->sbi = sbi;
|
|
sbi->stat_info = si;
|
|
|
|
atomic64_set(&sbi->total_hit_ext, 0);
|
|
atomic64_set(&sbi->read_hit_rbtree, 0);
|
|
atomic64_set(&sbi->read_hit_largest, 0);
|
|
atomic64_set(&sbi->read_hit_cached, 0);
|
|
|
|
atomic_set(&sbi->inline_xattr, 0);
|
|
atomic_set(&sbi->inline_inode, 0);
|
|
atomic_set(&sbi->inline_dir, 0);
|
|
atomic_set(&sbi->inplace_count, 0);
|
|
|
|
atomic_set(&sbi->aw_cnt, 0);
|
|
atomic_set(&sbi->vw_cnt, 0);
|
|
atomic_set(&sbi->max_aw_cnt, 0);
|
|
atomic_set(&sbi->max_vw_cnt, 0);
|
|
|
|
mutex_lock(&f2fs_stat_mutex);
|
|
list_add_tail(&si->stat_list, &f2fs_stat_list);
|
|
mutex_unlock(&f2fs_stat_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
|
|
{
|
|
struct f2fs_stat_info *si = F2FS_STAT(sbi);
|
|
|
|
mutex_lock(&f2fs_stat_mutex);
|
|
list_del(&si->stat_list);
|
|
mutex_unlock(&f2fs_stat_mutex);
|
|
|
|
kfree(si);
|
|
}
|
|
|
|
int __init f2fs_create_root_stats(void)
|
|
{
|
|
struct dentry *file;
|
|
|
|
f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
|
|
if (!f2fs_debugfs_root)
|
|
return -ENOMEM;
|
|
|
|
file = debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root,
|
|
NULL, &stat_fops);
|
|
if (!file) {
|
|
debugfs_remove(f2fs_debugfs_root);
|
|
f2fs_debugfs_root = NULL;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void f2fs_destroy_root_stats(void)
|
|
{
|
|
if (!f2fs_debugfs_root)
|
|
return;
|
|
|
|
debugfs_remove_recursive(f2fs_debugfs_root);
|
|
f2fs_debugfs_root = NULL;
|
|
}
|