f2fs: add tracepoint for f2fs_gc
This patch adds tracepoint for f2fs_gc. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
Jaegeuk Kim
parent
7f2b4e8ea5
commit
c56f16dab0
50
fs/f2fs/gc.c
50
fs/f2fs/gc.c
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@ -919,7 +919,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
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struct blk_plug plug;
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unsigned int segno = start_segno;
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unsigned int end_segno = start_segno + sbi->segs_per_sec;
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int sec_freed = 0;
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int seg_freed = 0;
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unsigned char type = IS_DATASEG(get_seg_entry(sbi, segno)->type) ?
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SUM_TYPE_DATA : SUM_TYPE_NODE;
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@ -965,6 +965,10 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
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gc_type);
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stat_inc_seg_count(sbi, type, gc_type);
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if (gc_type == FG_GC &&
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get_valid_blocks(sbi, segno, false) == 0)
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seg_freed++;
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next:
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f2fs_put_page(sum_page, 0);
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}
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@ -975,21 +979,17 @@ next:
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blk_finish_plug(&plug);
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if (gc_type == FG_GC &&
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get_valid_blocks(sbi, start_segno, true) == 0)
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sec_freed = 1;
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stat_inc_call_count(sbi->stat_info);
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return sec_freed;
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return seg_freed;
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}
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int f2fs_gc(struct f2fs_sb_info *sbi, bool sync,
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bool background, unsigned int segno)
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{
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int gc_type = sync ? FG_GC : BG_GC;
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int sec_freed = 0;
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int ret;
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int sec_freed = 0, seg_freed = 0, total_freed = 0;
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int ret = 0;
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struct cp_control cpc;
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unsigned int init_segno = segno;
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struct gc_inode_list gc_list = {
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@ -997,6 +997,15 @@ int f2fs_gc(struct f2fs_sb_info *sbi, bool sync,
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.iroot = RADIX_TREE_INIT(GFP_NOFS),
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};
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trace_f2fs_gc_begin(sbi->sb, sync, background,
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get_pages(sbi, F2FS_DIRTY_NODES),
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get_pages(sbi, F2FS_DIRTY_DENTS),
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get_pages(sbi, F2FS_DIRTY_IMETA),
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free_sections(sbi),
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free_segments(sbi),
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reserved_segments(sbi),
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prefree_segments(sbi));
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cpc.reason = __get_cp_reason(sbi);
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gc_more:
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if (unlikely(!(sbi->sb->s_flags & MS_ACTIVE))) {
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@ -1023,17 +1032,20 @@ gc_more:
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gc_type = FG_GC;
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}
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ret = -EINVAL;
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/* f2fs_balance_fs doesn't need to do BG_GC in critical path. */
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if (gc_type == BG_GC && !background)
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if (gc_type == BG_GC && !background) {
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ret = -EINVAL;
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goto stop;
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if (!__get_victim(sbi, &segno, gc_type))
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}
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if (!__get_victim(sbi, &segno, gc_type)) {
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ret = -ENODATA;
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goto stop;
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ret = 0;
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}
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if (do_garbage_collect(sbi, segno, &gc_list, gc_type) &&
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gc_type == FG_GC)
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seg_freed = do_garbage_collect(sbi, segno, &gc_list, gc_type);
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if (gc_type == FG_GC && seg_freed == sbi->segs_per_sec)
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sec_freed++;
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total_freed += seg_freed;
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if (gc_type == FG_GC)
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sbi->cur_victim_sec = NULL_SEGNO;
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@ -1050,6 +1062,16 @@ gc_more:
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stop:
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SIT_I(sbi)->last_victim[ALLOC_NEXT] = 0;
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SIT_I(sbi)->last_victim[FLUSH_DEVICE] = init_segno;
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trace_f2fs_gc_end(sbi->sb, ret, total_freed, sec_freed,
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get_pages(sbi, F2FS_DIRTY_NODES),
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get_pages(sbi, F2FS_DIRTY_DENTS),
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get_pages(sbi, F2FS_DIRTY_IMETA),
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free_sections(sbi),
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free_segments(sbi),
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reserved_segments(sbi),
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prefree_segments(sbi));
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mutex_unlock(&sbi->gc_mutex);
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put_gc_inode(&gc_list);
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@ -569,6 +569,113 @@ TRACE_EVENT(f2fs_background_gc,
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__entry->free)
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);
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TRACE_EVENT(f2fs_gc_begin,
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TP_PROTO(struct super_block *sb, bool sync, bool background,
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long long dirty_nodes, long long dirty_dents,
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long long dirty_imeta, unsigned int free_sec,
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unsigned int free_seg, int reserved_seg,
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unsigned int prefree_seg),
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TP_ARGS(sb, sync, background, dirty_nodes, dirty_dents, dirty_imeta,
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free_sec, free_seg, reserved_seg, prefree_seg),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(bool, sync)
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__field(bool, background)
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__field(long long, dirty_nodes)
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__field(long long, dirty_dents)
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__field(long long, dirty_imeta)
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__field(unsigned int, free_sec)
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__field(unsigned int, free_seg)
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__field(int, reserved_seg)
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__field(unsigned int, prefree_seg)
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),
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TP_fast_assign(
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__entry->dev = sb->s_dev;
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__entry->sync = sync;
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__entry->background = background;
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__entry->dirty_nodes = dirty_nodes;
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__entry->dirty_dents = dirty_dents;
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__entry->dirty_imeta = dirty_imeta;
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__entry->free_sec = free_sec;
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__entry->free_seg = free_seg;
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__entry->reserved_seg = reserved_seg;
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__entry->prefree_seg = prefree_seg;
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),
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TP_printk("dev = (%d,%d), sync = %d, background = %d, nodes = %lld, "
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"dents = %lld, imeta = %lld, free_sec:%u, free_seg:%u, "
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"rsv_seg:%d, prefree_seg:%u",
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show_dev(__entry->dev),
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__entry->sync,
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__entry->background,
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__entry->dirty_nodes,
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__entry->dirty_dents,
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__entry->dirty_imeta,
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__entry->free_sec,
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__entry->free_seg,
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__entry->reserved_seg,
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__entry->prefree_seg)
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);
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TRACE_EVENT(f2fs_gc_end,
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TP_PROTO(struct super_block *sb, int ret, int seg_freed,
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int sec_freed, long long dirty_nodes,
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long long dirty_dents, long long dirty_imeta,
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unsigned int free_sec, unsigned int free_seg,
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int reserved_seg, unsigned int prefree_seg),
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TP_ARGS(sb, ret, seg_freed, sec_freed, dirty_nodes, dirty_dents,
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dirty_imeta, free_sec, free_seg, reserved_seg, prefree_seg),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(int, ret)
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__field(int, seg_freed)
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__field(int, sec_freed)
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__field(long long, dirty_nodes)
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__field(long long, dirty_dents)
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__field(long long, dirty_imeta)
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__field(unsigned int, free_sec)
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__field(unsigned int, free_seg)
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__field(int, reserved_seg)
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__field(unsigned int, prefree_seg)
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),
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TP_fast_assign(
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__entry->dev = sb->s_dev;
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__entry->ret = ret;
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__entry->seg_freed = seg_freed;
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__entry->sec_freed = sec_freed;
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__entry->dirty_nodes = dirty_nodes;
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__entry->dirty_dents = dirty_dents;
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__entry->dirty_imeta = dirty_imeta;
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__entry->free_sec = free_sec;
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__entry->free_seg = free_seg;
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__entry->reserved_seg = reserved_seg;
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__entry->prefree_seg = prefree_seg;
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),
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TP_printk("dev = (%d,%d), ret = %d, seg_freed = %d, sec_freed = %d, "
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"nodes = %lld, dents = %lld, imeta = %lld, free_sec:%u, "
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"free_seg:%u, rsv_seg:%d, prefree_seg:%u",
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show_dev(__entry->dev),
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__entry->ret,
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__entry->seg_freed,
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__entry->sec_freed,
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__entry->dirty_nodes,
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__entry->dirty_dents,
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__entry->dirty_imeta,
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__entry->free_sec,
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__entry->free_seg,
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__entry->reserved_seg,
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__entry->prefree_seg)
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);
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TRACE_EVENT(f2fs_get_victim,
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TP_PROTO(struct super_block *sb, int type, int gc_type,
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