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-rw-r--r--fs/f2fs/debug.c679
1 files changed, 679 insertions, 0 deletions
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
new file mode 100644
index 000000000..a9baa121d
--- /dev/null
+++ b/fs/f2fs/debug.c
@@ -0,0 +1,679 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * f2fs debugging statistics
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ * Copyright (c) 2012 Linux Foundation
+ * Copyright (c) 2012 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+ */
+
+#include <linux/fs.h>
+#include <linux/backing-dev.h>
+#include <linux/f2fs_fs.h>
+#include <linux/blkdev.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+#include "f2fs.h"
+#include "node.h"
+#include "segment.h"
+#include "gc.h"
+
+static LIST_HEAD(f2fs_stat_list);
+static DEFINE_RAW_SPINLOCK(f2fs_stat_lock);
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *f2fs_debugfs_root;
+#endif
+
+/*
+ * This function calculates BDF of every segments
+ */
+void f2fs_update_sit_info(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_stat_info *si = F2FS_STAT(sbi);
+ unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
+ unsigned long long bimodal, dist;
+ unsigned int segno, vblocks;
+ int ndirty = 0;
+
+ bimodal = 0;
+ total_vblocks = 0;
+ blks_per_sec = CAP_BLKS_PER_SEC(sbi);
+ hblks_per_sec = blks_per_sec / 2;
+ for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
+ vblocks = get_valid_blocks(sbi, segno, true);
+ dist = abs(vblocks - hblks_per_sec);
+ bimodal += dist * dist;
+
+ if (vblocks > 0 && vblocks < blks_per_sec) {
+ total_vblocks += vblocks;
+ ndirty++;
+ }
+ }
+ dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
+ si->bimodal = div64_u64(bimodal, dist);
+ if (si->dirty_count)
+ si->avg_vblocks = div_u64(total_vblocks, ndirty);
+ else
+ si->avg_vblocks = 0;
+}
+
+#ifdef CONFIG_DEBUG_FS
+static void update_general_status(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_stat_info *si = F2FS_STAT(sbi);
+ struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
+ int i;
+
+ /* these will be changed if online resize is done */
+ 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);
+
+ /* general extent cache stats */
+ for (i = 0; i < NR_EXTENT_CACHES; i++) {
+ struct extent_tree_info *eti = &sbi->extent_tree[i];
+
+ si->hit_cached[i] = atomic64_read(&sbi->read_hit_cached[i]);
+ si->hit_rbtree[i] = atomic64_read(&sbi->read_hit_rbtree[i]);
+ si->total_ext[i] = atomic64_read(&sbi->total_hit_ext[i]);
+ si->hit_total[i] = si->hit_cached[i] + si->hit_rbtree[i];
+ si->ext_tree[i] = atomic_read(&eti->total_ext_tree);
+ si->zombie_tree[i] = atomic_read(&eti->total_zombie_tree);
+ si->ext_node[i] = atomic_read(&eti->total_ext_node);
+ }
+ /* read extent_cache only */
+ si->hit_largest = atomic64_read(&sbi->read_hit_largest);
+ si->hit_total[EX_READ] += si->hit_largest;
+
+ /* validation check of the segment numbers */
+ si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES);
+ si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
+ si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
+ si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA);
+ si->ndirty_qdata = get_pages(sbi, F2FS_DIRTY_QDATA);
+ si->ndirty_imeta = get_pages(sbi, F2FS_DIRTY_IMETA);
+ si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE];
+ si->ndirty_files = sbi->ndirty_inode[FILE_INODE];
+ si->nquota_files = sbi->nquota_files;
+ si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
+ si->aw_cnt = atomic_read(&sbi->atomic_files);
+ si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
+ si->nr_dio_read = get_pages(sbi, F2FS_DIO_READ);
+ si->nr_dio_write = get_pages(sbi, F2FS_DIO_WRITE);
+ si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
+ si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
+ si->nr_rd_data = get_pages(sbi, F2FS_RD_DATA);
+ si->nr_rd_node = get_pages(sbi, F2FS_RD_NODE);
+ si->nr_rd_meta = get_pages(sbi, F2FS_RD_META);
+ if (SM_I(sbi)->fcc_info) {
+ si->nr_flushed =
+ atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
+ si->nr_flushing =
+ atomic_read(&SM_I(sbi)->fcc_info->queued_flush);
+ si->flush_list_empty =
+ llist_empty(&SM_I(sbi)->fcc_info->issue_list);
+ }
+ if (SM_I(sbi)->dcc_info) {
+ si->nr_discarded =
+ atomic_read(&SM_I(sbi)->dcc_info->issued_discard);
+ si->nr_discarding =
+ atomic_read(&SM_I(sbi)->dcc_info->queued_discard);
+ si->nr_discard_cmd =
+ atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
+ si->undiscard_blks = SM_I(sbi)->dcc_info->undiscard_blks;
+ }
+ si->nr_issued_ckpt = atomic_read(&sbi->cprc_info.issued_ckpt);
+ si->nr_total_ckpt = atomic_read(&sbi->cprc_info.total_ckpt);
+ si->nr_queued_ckpt = atomic_read(&sbi->cprc_info.queued_ckpt);
+ spin_lock(&sbi->cprc_info.stat_lock);
+ si->cur_ckpt_time = sbi->cprc_info.cur_time;
+ si->peak_ckpt_time = sbi->cprc_info.peak_time;
+ spin_unlock(&sbi->cprc_info.stat_lock);
+ si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
+ si->rsvd_segs = reserved_segments(sbi);
+ si->overp_segs = overprovision_segments(sbi);
+ si->valid_count = valid_user_blocks(sbi);
+ si->discard_blks = discard_blocks(sbi);
+ si->valid_node_count = valid_node_count(sbi);
+ si->valid_inode_count = valid_inode_count(sbi);
+ si->inline_xattr = atomic_read(&sbi->inline_xattr);
+ si->inline_inode = atomic_read(&sbi->inline_inode);
+ si->inline_dir = atomic_read(&sbi->inline_dir);
+ si->compr_inode = atomic_read(&sbi->compr_inode);
+ si->swapfile_inode = atomic_read(&sbi->swapfile_inode);
+ si->compr_blocks = atomic64_read(&sbi->compr_blocks);
+ si->append = sbi->im[APPEND_INO].ino_num;
+ si->update = sbi->im[UPDATE_INO].ino_num;
+ si->orphans = sbi->im[ORPHAN_INO].ino_num;
+ si->utilization = utilization(sbi);
+
+ si->free_segs = free_segments(sbi);
+ si->free_secs = free_sections(sbi);
+ si->prefree_count = prefree_segments(sbi);
+ si->dirty_count = dirty_segments(sbi);
+ if (sbi->node_inode)
+ si->node_pages = NODE_MAPPING(sbi)->nrpages;
+ if (sbi->meta_inode)
+ si->meta_pages = META_MAPPING(sbi)->nrpages;
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (sbi->compress_inode) {
+ si->compress_pages = COMPRESS_MAPPING(sbi)->nrpages;
+ si->compress_page_hit = atomic_read(&sbi->compress_page_hit);
+ }
+#endif
+ si->nats = NM_I(sbi)->nat_cnt[TOTAL_NAT];
+ si->dirty_nats = NM_I(sbi)->nat_cnt[DIRTY_NAT];
+ si->sits = MAIN_SEGS(sbi);
+ si->dirty_sits = SIT_I(sbi)->dirty_sentries;
+ si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
+ si->avail_nids = NM_I(sbi)->available_nids;
+ si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
+ si->io_skip_bggc = sbi->io_skip_bggc;
+ si->other_skip_bggc = sbi->other_skip_bggc;
+ si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
+ * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
+ / 2;
+ si->util_valid = (int)(written_block_count(sbi) >>
+ sbi->log_blocks_per_seg)
+ * 100 / (int)(sbi->user_block_count >> sbi->log_blocks_per_seg)
+ / 2;
+ si->util_invalid = 50 - si->util_free - si->util_valid;
+ for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) {
+ struct curseg_info *curseg = CURSEG_I(sbi, i);
+
+ si->curseg[i] = curseg->segno;
+ si->cursec[i] = GET_SEC_FROM_SEG(sbi, curseg->segno);
+ si->curzone[i] = GET_ZONE_FROM_SEC(sbi, si->cursec[i]);
+ }
+
+ for (i = META_CP; i < META_MAX; i++)
+ si->meta_count[i] = atomic_read(&sbi->meta_count[i]);
+
+ for (i = 0; i < NO_CHECK_TYPE; i++) {
+ si->dirty_seg[i] = 0;
+ si->full_seg[i] = 0;
+ si->valid_blks[i] = 0;
+ }
+
+ for (i = 0; i < MAIN_SEGS(sbi); i++) {
+ int blks = get_seg_entry(sbi, i)->valid_blocks;
+ int type = get_seg_entry(sbi, i)->type;
+
+ if (!blks)
+ continue;
+
+ if (blks == sbi->blocks_per_seg)
+ si->full_seg[type]++;
+ else
+ si->dirty_seg[type]++;
+ si->valid_blks[type] += blks;
+ }
+
+ for (i = 0; i < 2; i++) {
+ si->segment_count[i] = sbi->segment_count[i];
+ si->block_count[i] = sbi->block_count[i];
+ }
+
+ si->inplace_count = atomic_read(&sbi->inplace_count);
+}
+
+/*
+ * This function calculates memory footprint.
+ */
+static void update_mem_info(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_stat_info *si = F2FS_STAT(sbi);
+ int i;
+
+ if (si->base_mem)
+ goto get_cache;
+
+ /* build stat */
+ si->base_mem = sizeof(struct f2fs_stat_info);
+
+ /* build superblock */
+ si->base_mem += sizeof(struct f2fs_sb_info) + sbi->sb->s_blocksize;
+ si->base_mem += 2 * sizeof(struct f2fs_inode_info);
+ si->base_mem += sizeof(*sbi->ckpt);
+
+ /* build sm */
+ si->base_mem += sizeof(struct f2fs_sm_info);
+
+ /* build sit */
+ si->base_mem += sizeof(struct sit_info);
+ si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry);
+ si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
+ si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
+ si->base_mem += SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi);
+ si->base_mem += SIT_VBLOCK_MAP_SIZE;
+ if (__is_large_section(sbi))
+ si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry);
+ si->base_mem += __bitmap_size(sbi, SIT_BITMAP);
+
+ /* build free segmap */
+ si->base_mem += sizeof(struct free_segmap_info);
+ si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi));
+ si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
+
+ /* build curseg */
+ si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE;
+ si->base_mem += PAGE_SIZE * NR_CURSEG_TYPE;
+
+ /* build dirty segmap */
+ si->base_mem += sizeof(struct dirty_seglist_info);
+ si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi));
+ si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi));
+
+ /* build nm */
+ si->base_mem += sizeof(struct f2fs_nm_info);
+ si->base_mem += __bitmap_size(sbi, NAT_BITMAP);
+ si->base_mem += (NM_I(sbi)->nat_bits_blocks << F2FS_BLKSIZE_BITS);
+ si->base_mem += NM_I(sbi)->nat_blocks *
+ f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK);
+ si->base_mem += NM_I(sbi)->nat_blocks / 8;
+ si->base_mem += NM_I(sbi)->nat_blocks * sizeof(unsigned short);
+
+get_cache:
+ si->cache_mem = 0;
+
+ /* build gc */
+ if (sbi->gc_thread)
+ si->cache_mem += sizeof(struct f2fs_gc_kthread);
+
+ /* build merge flush thread */
+ if (SM_I(sbi)->fcc_info)
+ si->cache_mem += sizeof(struct flush_cmd_control);
+ if (SM_I(sbi)->dcc_info) {
+ si->cache_mem += sizeof(struct discard_cmd_control);
+ si->cache_mem += sizeof(struct discard_cmd) *
+ atomic_read(&SM_I(sbi)->dcc_info->discard_cmd_cnt);
+ }
+
+ /* free nids */
+ si->cache_mem += (NM_I(sbi)->nid_cnt[FREE_NID] +
+ NM_I(sbi)->nid_cnt[PREALLOC_NID]) *
+ sizeof(struct free_nid);
+ si->cache_mem += NM_I(sbi)->nat_cnt[TOTAL_NAT] *
+ sizeof(struct nat_entry);
+ si->cache_mem += NM_I(sbi)->nat_cnt[DIRTY_NAT] *
+ sizeof(struct nat_entry_set);
+ for (i = 0; i < MAX_INO_ENTRY; i++)
+ si->cache_mem += sbi->im[i].ino_num * sizeof(struct ino_entry);
+
+ for (i = 0; i < NR_EXTENT_CACHES; i++) {
+ struct extent_tree_info *eti = &sbi->extent_tree[i];
+
+ si->ext_mem[i] = atomic_read(&eti->total_ext_tree) *
+ sizeof(struct extent_tree);
+ si->ext_mem[i] += atomic_read(&eti->total_ext_node) *
+ sizeof(struct extent_node);
+ si->cache_mem += si->ext_mem[i];
+ }
+
+ si->page_mem = 0;
+ if (sbi->node_inode) {
+ unsigned npages = NODE_MAPPING(sbi)->nrpages;
+
+ si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
+ }
+ if (sbi->meta_inode) {
+ unsigned npages = META_MAPPING(sbi)->nrpages;
+
+ si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
+ }
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (sbi->compress_inode) {
+ unsigned npages = COMPRESS_MAPPING(sbi)->nrpages;
+ si->page_mem += (unsigned long long)npages << PAGE_SHIFT;
+ }
+#endif
+}
+
+static char *s_flag[] = {
+ [SBI_IS_DIRTY] = " fs_dirty",
+ [SBI_IS_CLOSE] = " closing",
+ [SBI_NEED_FSCK] = " need_fsck",
+ [SBI_POR_DOING] = " recovering",
+ [SBI_NEED_SB_WRITE] = " sb_dirty",
+ [SBI_NEED_CP] = " need_cp",
+ [SBI_IS_SHUTDOWN] = " shutdown",
+ [SBI_IS_RECOVERED] = " recovered",
+ [SBI_CP_DISABLED] = " cp_disabled",
+ [SBI_CP_DISABLED_QUICK] = " cp_disabled_quick",
+ [SBI_QUOTA_NEED_FLUSH] = " quota_need_flush",
+ [SBI_QUOTA_SKIP_FLUSH] = " quota_skip_flush",
+ [SBI_QUOTA_NEED_REPAIR] = " quota_need_repair",
+ [SBI_IS_RESIZEFS] = " resizefs",
+ [SBI_IS_FREEZING] = " freezefs",
+};
+
+static int stat_show(struct seq_file *s, void *v)
+{
+ struct f2fs_stat_info *si;
+ int i = 0, j = 0;
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
+ list_for_each_entry(si, &f2fs_stat_list, stat_list) {
+ update_general_status(si->sbi);
+
+ seq_printf(s, "\n=====[ partition info(%pg). #%d, %s, CP: %s]=====\n",
+ si->sbi->sb->s_bdev, i++,
+ f2fs_readonly(si->sbi->sb) ? "RO" : "RW",
+ is_set_ckpt_flags(si->sbi, CP_DISABLED_FLAG) ?
+ "Disabled" : (f2fs_cp_error(si->sbi) ? "Error" : "Good"));
+ if (si->sbi->s_flag) {
+ seq_puts(s, "[SBI:");
+ for_each_set_bit(j, &si->sbi->s_flag, 32)
+ seq_puts(s, s_flag[j]);
+ seq_puts(s, "]\n");
+ }
+ seq_printf(s, "[SB: 1] [CP: 2] [SIT: %d] [NAT: %d] ",
+ si->sit_area_segs, si->nat_area_segs);
+ seq_printf(s, "[SSA: %d] [MAIN: %d",
+ si->ssa_area_segs, si->main_area_segs);
+ seq_printf(s, "(OverProv:%d Resv:%d)]\n\n",
+ si->overp_segs, si->rsvd_segs);
+ seq_printf(s, "Current Time Sec: %llu / Mounted Time Sec: %llu\n\n",
+ ktime_get_boottime_seconds(),
+ SIT_I(si->sbi)->mounted_time);
+ if (test_opt(si->sbi, DISCARD))
+ seq_printf(s, "Utilization: %u%% (%u valid blocks, %u discard blocks)\n",
+ si->utilization, si->valid_count, si->discard_blks);
+ else
+ seq_printf(s, "Utilization: %u%% (%u valid blocks)\n",
+ si->utilization, si->valid_count);
+
+ seq_printf(s, " - Node: %u (Inode: %u, ",
+ si->valid_node_count, si->valid_inode_count);
+ seq_printf(s, "Other: %u)\n - Data: %u\n",
+ si->valid_node_count - si->valid_inode_count,
+ si->valid_count - si->valid_node_count);
+ seq_printf(s, " - Inline_xattr Inode: %u\n",
+ si->inline_xattr);
+ seq_printf(s, " - Inline_data Inode: %u\n",
+ si->inline_inode);
+ seq_printf(s, " - Inline_dentry Inode: %u\n",
+ si->inline_dir);
+ seq_printf(s, " - Compressed Inode: %u, Blocks: %llu\n",
+ si->compr_inode, si->compr_blocks);
+ seq_printf(s, " - Swapfile Inode: %u\n",
+ si->swapfile_inode);
+ seq_printf(s, " - Orphan/Append/Update Inode: %u, %u, %u\n",
+ si->orphans, si->append, si->update);
+ seq_printf(s, "\nMain area: %d segs, %d secs %d zones\n",
+ si->main_area_segs, si->main_area_sections,
+ si->main_area_zones);
+ seq_printf(s, " TYPE %8s %8s %8s %10s %10s %10s\n",
+ "segno", "secno", "zoneno", "dirty_seg", "full_seg", "valid_blk");
+ seq_printf(s, " - COLD data: %8d %8d %8d %10u %10u %10u\n",
+ si->curseg[CURSEG_COLD_DATA],
+ si->cursec[CURSEG_COLD_DATA],
+ si->curzone[CURSEG_COLD_DATA],
+ si->dirty_seg[CURSEG_COLD_DATA],
+ si->full_seg[CURSEG_COLD_DATA],
+ si->valid_blks[CURSEG_COLD_DATA]);
+ seq_printf(s, " - WARM data: %8d %8d %8d %10u %10u %10u\n",
+ si->curseg[CURSEG_WARM_DATA],
+ si->cursec[CURSEG_WARM_DATA],
+ si->curzone[CURSEG_WARM_DATA],
+ si->dirty_seg[CURSEG_WARM_DATA],
+ si->full_seg[CURSEG_WARM_DATA],
+ si->valid_blks[CURSEG_WARM_DATA]);
+ seq_printf(s, " - HOT data: %8d %8d %8d %10u %10u %10u\n",
+ si->curseg[CURSEG_HOT_DATA],
+ si->cursec[CURSEG_HOT_DATA],
+ si->curzone[CURSEG_HOT_DATA],
+ si->dirty_seg[CURSEG_HOT_DATA],
+ si->full_seg[CURSEG_HOT_DATA],
+ si->valid_blks[CURSEG_HOT_DATA]);
+ seq_printf(s, " - Dir dnode: %8d %8d %8d %10u %10u %10u\n",
+ si->curseg[CURSEG_HOT_NODE],
+ si->cursec[CURSEG_HOT_NODE],
+ si->curzone[CURSEG_HOT_NODE],
+ si->dirty_seg[CURSEG_HOT_NODE],
+ si->full_seg[CURSEG_HOT_NODE],
+ si->valid_blks[CURSEG_HOT_NODE]);
+ seq_printf(s, " - File dnode: %8d %8d %8d %10u %10u %10u\n",
+ si->curseg[CURSEG_WARM_NODE],
+ si->cursec[CURSEG_WARM_NODE],
+ si->curzone[CURSEG_WARM_NODE],
+ si->dirty_seg[CURSEG_WARM_NODE],
+ si->full_seg[CURSEG_WARM_NODE],
+ si->valid_blks[CURSEG_WARM_NODE]);
+ seq_printf(s, " - Indir nodes: %8d %8d %8d %10u %10u %10u\n",
+ si->curseg[CURSEG_COLD_NODE],
+ si->cursec[CURSEG_COLD_NODE],
+ si->curzone[CURSEG_COLD_NODE],
+ si->dirty_seg[CURSEG_COLD_NODE],
+ si->full_seg[CURSEG_COLD_NODE],
+ si->valid_blks[CURSEG_COLD_NODE]);
+ seq_printf(s, " - Pinned file: %8d %8d %8d\n",
+ si->curseg[CURSEG_COLD_DATA_PINNED],
+ si->cursec[CURSEG_COLD_DATA_PINNED],
+ si->curzone[CURSEG_COLD_DATA_PINNED]);
+ seq_printf(s, " - ATGC data: %8d %8d %8d\n",
+ si->curseg[CURSEG_ALL_DATA_ATGC],
+ si->cursec[CURSEG_ALL_DATA_ATGC],
+ si->curzone[CURSEG_ALL_DATA_ATGC]);
+ seq_printf(s, "\n - Valid: %d\n - Dirty: %d\n",
+ si->main_area_segs - si->dirty_count -
+ si->prefree_count - si->free_segs,
+ si->dirty_count);
+ seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n",
+ si->prefree_count, si->free_segs, si->free_secs);
+ seq_printf(s, "CP calls: %d (BG: %d)\n",
+ si->cp_count, si->bg_cp_count);
+ seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]);
+ seq_printf(s, " - sit blocks : %u\n",
+ si->meta_count[META_SIT]);
+ seq_printf(s, " - nat blocks : %u\n",
+ si->meta_count[META_NAT]);
+ seq_printf(s, " - ssa blocks : %u\n",
+ si->meta_count[META_SSA]);
+ seq_printf(s, "CP merge (Queued: %4d, Issued: %4d, Total: %4d, "
+ "Cur time: %4d(ms), Peak time: %4d(ms))\n",
+ si->nr_queued_ckpt, si->nr_issued_ckpt,
+ si->nr_total_ckpt, si->cur_ckpt_time,
+ si->peak_ckpt_time);
+ seq_printf(s, "GC calls: %d (BG: %d)\n",
+ si->call_count, si->bg_gc);
+ seq_printf(s, " - data segments : %d (%d)\n",
+ si->data_segs, si->bg_data_segs);
+ seq_printf(s, " - node segments : %d (%d)\n",
+ si->node_segs, si->bg_node_segs);
+ seq_printf(s, " - Reclaimed segs : Normal (%d), Idle CB (%d), "
+ "Idle Greedy (%d), Idle AT (%d), "
+ "Urgent High (%d), Urgent Mid (%d), "
+ "Urgent Low (%d)\n",
+ si->sbi->gc_reclaimed_segs[GC_NORMAL],
+ si->sbi->gc_reclaimed_segs[GC_IDLE_CB],
+ si->sbi->gc_reclaimed_segs[GC_IDLE_GREEDY],
+ si->sbi->gc_reclaimed_segs[GC_IDLE_AT],
+ si->sbi->gc_reclaimed_segs[GC_URGENT_HIGH],
+ si->sbi->gc_reclaimed_segs[GC_URGENT_MID],
+ si->sbi->gc_reclaimed_segs[GC_URGENT_LOW]);
+ seq_printf(s, "Try to move %d blocks (BG: %d)\n", si->tot_blks,
+ si->bg_data_blks + si->bg_node_blks);
+ seq_printf(s, " - data blocks : %d (%d)\n", si->data_blks,
+ si->bg_data_blks);
+ seq_printf(s, " - node blocks : %d (%d)\n", si->node_blks,
+ si->bg_node_blks);
+ seq_printf(s, "BG skip : IO: %u, Other: %u\n",
+ si->io_skip_bggc, si->other_skip_bggc);
+ seq_puts(s, "\nExtent Cache (Read):\n");
+ seq_printf(s, " - Hit Count: L1-1:%llu L1-2:%llu L2:%llu\n",
+ si->hit_largest, si->hit_cached[EX_READ],
+ si->hit_rbtree[EX_READ]);
+ seq_printf(s, " - Hit Ratio: %llu%% (%llu / %llu)\n",
+ !si->total_ext[EX_READ] ? 0 :
+ div64_u64(si->hit_total[EX_READ] * 100,
+ si->total_ext[EX_READ]),
+ si->hit_total[EX_READ], si->total_ext[EX_READ]);
+ seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n",
+ si->ext_tree[EX_READ], si->zombie_tree[EX_READ],
+ si->ext_node[EX_READ]);
+ seq_puts(s, "\nBalancing F2FS Async:\n");
+ seq_printf(s, " - DIO (R: %4d, W: %4d)\n",
+ si->nr_dio_read, si->nr_dio_write);
+ seq_printf(s, " - IO_R (Data: %4d, Node: %4d, Meta: %4d\n",
+ si->nr_rd_data, si->nr_rd_node, si->nr_rd_meta);
+ seq_printf(s, " - IO_W (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
+ "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
+ si->nr_wb_cp_data, si->nr_wb_data,
+ si->nr_flushing, si->nr_flushed,
+ si->flush_list_empty,
+ si->nr_discarding, si->nr_discarded,
+ si->nr_discard_cmd, si->undiscard_blks);
+ seq_printf(s, " - atomic IO: %4d (Max. %4d)\n",
+ si->aw_cnt, si->max_aw_cnt);
+ seq_printf(s, " - compress: %4d, hit:%8d\n", si->compress_pages, si->compress_page_hit);
+ seq_printf(s, " - nodes: %4d in %4d\n",
+ si->ndirty_node, si->node_pages);
+ seq_printf(s, " - dents: %4d in dirs:%4d (%4d)\n",
+ si->ndirty_dent, si->ndirty_dirs, si->ndirty_all);
+ seq_printf(s, " - datas: %4d in files:%4d\n",
+ si->ndirty_data, si->ndirty_files);
+ seq_printf(s, " - quota datas: %4d in quota files:%4d\n",
+ si->ndirty_qdata, si->nquota_files);
+ seq_printf(s, " - meta: %4d in %4d\n",
+ si->ndirty_meta, si->meta_pages);
+ seq_printf(s, " - imeta: %4d\n",
+ si->ndirty_imeta);
+ seq_printf(s, " - fsync mark: %4lld\n",
+ percpu_counter_sum_positive(
+ &si->sbi->rf_node_block_count));
+ 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/%9d\n - alloc_nids: %9d\n",
+ si->free_nids, si->avail_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 */
+ f2fs_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 all: %llu KB\n",
+ si->cache_mem >> 10);
+ seq_printf(s, " - read extent cache: %llu KB\n",
+ si->ext_mem[EX_READ] >> 10);
+ seq_printf(s, " - paged : %llu KB\n",
+ si->page_mem >> 10);
+ }
+ raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(stat);
+#endif
+
+int f2fs_build_stats(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
+ struct f2fs_stat_info *si;
+ unsigned long flags;
+ int i;
+
+ si = f2fs_kzalloc(sbi, 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;
+
+ /* general extent cache stats */
+ for (i = 0; i < NR_EXTENT_CACHES; i++) {
+ atomic64_set(&sbi->total_hit_ext[i], 0);
+ atomic64_set(&sbi->read_hit_rbtree[i], 0);
+ atomic64_set(&sbi->read_hit_cached[i], 0);
+ }
+
+ /* read extent_cache only */
+ atomic64_set(&sbi->read_hit_largest, 0);
+
+ atomic_set(&sbi->inline_xattr, 0);
+ atomic_set(&sbi->inline_inode, 0);
+ atomic_set(&sbi->inline_dir, 0);
+ atomic_set(&sbi->compr_inode, 0);
+ atomic64_set(&sbi->compr_blocks, 0);
+ atomic_set(&sbi->swapfile_inode, 0);
+ atomic_set(&sbi->atomic_files, 0);
+ atomic_set(&sbi->inplace_count, 0);
+ for (i = META_CP; i < META_MAX; i++)
+ atomic_set(&sbi->meta_count[i], 0);
+
+ atomic_set(&sbi->max_aw_cnt, 0);
+
+ raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
+ list_add_tail(&si->stat_list, &f2fs_stat_list);
+ raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
+
+ return 0;
+}
+
+void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
+{
+ struct f2fs_stat_info *si = F2FS_STAT(sbi);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&f2fs_stat_lock, flags);
+ list_del(&si->stat_list);
+ raw_spin_unlock_irqrestore(&f2fs_stat_lock, flags);
+
+ kfree(si);
+}
+
+void __init f2fs_create_root_stats(void)
+{
+#ifdef CONFIG_DEBUG_FS
+ f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
+
+ debugfs_create_file("status", 0444, f2fs_debugfs_root, NULL,
+ &stat_fops);
+#endif
+}
+
+void f2fs_destroy_root_stats(void)
+{
+#ifdef CONFIG_DEBUG_FS
+ debugfs_remove_recursive(f2fs_debugfs_root);
+ f2fs_debugfs_root = NULL;
+#endif
+}