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Commit 1ec4610c authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
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f2fs: add trace for rb-tree extent cache ops 



This patch adds trace for lookup/update/shrink/destroy ops in rb-tree extent cache.

Signed-off-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 4bf6fd9f

fs/f2fs/data.c

+14 −2
Original line number Diff line number Diff line
@@ -533,6 +533,8 @@ static bool f2fs_lookup_extent_tree(struct inode *inode, pgoff_t pgofs, 
	if (is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))

		return false;



	trace_f2fs_lookup_extent_tree_start(inode, pgofs);



	down_read(&sbi->extent_tree_lock);

	et = radix_tree_lookup(&sbi->extent_tree_root, inode->i_ino);

	if (!et) {
@@ -555,6 +557,8 @@ static bool f2fs_lookup_extent_tree(struct inode *inode, pgoff_t pgofs, 
	stat_inc_total_hit(sbi->sb);

	read_unlock(&et->lock);



	trace_f2fs_lookup_extent_tree_end(inode, pgofs, en);



	atomic_dec(&et->refcount);

	return en ? true : false;

}
@@ -573,6 +577,8 @@ static void f2fs_update_extent_tree(struct inode *inode, pgoff_t fofs, 
	if (is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))

		return;



	trace_f2fs_update_extent_tree(inode, fofs, blkaddr);



	down_write(&sbi->extent_tree_lock);

	et = radix_tree_lookup(&sbi->extent_tree_root, ino);

	if (!et) {
@@ -665,6 +671,7 @@ void f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink) 
	struct radix_tree_iter iter;

	void **slot;

	unsigned int found;

	unsigned int node_cnt = 0, tree_cnt = 0;



	if (!test_opt(sbi, EXTENT_CACHE))

		return;
@@ -691,7 +698,7 @@ void f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink) 


			atomic_inc(&et->refcount);

			write_lock(&et->lock);

			__free_extent_tree(sbi, et, false);

			node_cnt += __free_extent_tree(sbi, et, false);

			write_unlock(&et->lock);

			atomic_dec(&et->refcount);

		}
@@ -707,15 +714,19 @@ void f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink) 
			radix_tree_delete(&sbi->extent_tree_root, et->ino);

			kmem_cache_free(extent_tree_slab, et);

			sbi->total_ext_tree--;

			tree_cnt++;

		}

	}

	up_write(&sbi->extent_tree_lock);



	trace_f2fs_shrink_extent_tree(sbi, node_cnt, tree_cnt);

}



void f2fs_destroy_extent_tree(struct inode *inode)

{

	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);

	struct extent_tree *et;

	unsigned int node_cnt = 0;



	if (!test_opt(sbi, EXTENT_CACHE))

		return;
@@ -731,7 +742,7 @@ void f2fs_destroy_extent_tree(struct inode *inode) 


	/* free all extent info belong to this extent tree */

	write_lock(&et->lock);

	__free_extent_tree(sbi, et, true);

	node_cnt = __free_extent_tree(sbi, et, true);

	write_unlock(&et->lock);



	atomic_dec(&et->refcount);
@@ -749,6 +760,7 @@ void f2fs_destroy_extent_tree(struct inode *inode) 
	sbi->total_ext_tree--;

	up_write(&sbi->extent_tree_lock);

out:

	trace_f2fs_destroy_extent_tree(inode, node_cnt);

	return;

}

include/trace/events/f2fs.h

+134 −0
Original line number Diff line number Diff line
@@ -1011,6 +1011,140 @@ TRACE_EVENT(f2fs_issue_flush, 
		__entry->nobarrier ? "skip (nobarrier)" : "issue",

		__entry->flush_merge ? " with flush_merge" : "")

);



TRACE_EVENT(f2fs_lookup_extent_tree_start,



	TP_PROTO(struct inode *inode, unsigned int pgofs),



	TP_ARGS(inode, pgofs),



	TP_STRUCT__entry(

		__field(dev_t,	dev)

		__field(ino_t,	ino)

		__field(unsigned int, pgofs)

	),



	TP_fast_assign(

		__entry->dev = inode->i_sb->s_dev;

		__entry->ino = inode->i_ino;

		__entry->pgofs = pgofs;

	),



	TP_printk("dev = (%d,%d), ino = %lu, pgofs = %u",

		show_dev_ino(__entry),

		__entry->pgofs)

);



TRACE_EVENT_CONDITION(f2fs_lookup_extent_tree_end,



	TP_PROTO(struct inode *inode, unsigned int pgofs,

						struct extent_node *en),



	TP_ARGS(inode, pgofs, en),



	TP_CONDITION(en),



	TP_STRUCT__entry(

		__field(dev_t,	dev)

		__field(ino_t,	ino)

		__field(unsigned int, pgofs)

		__field(unsigned int, fofs)

		__field(u32, blk)

		__field(unsigned int, len)

	),



	TP_fast_assign(

		__entry->dev = inode->i_sb->s_dev;

		__entry->ino = inode->i_ino;

		__entry->pgofs = pgofs;

		__entry->fofs = en->ei.fofs;

		__entry->blk = en->ei.blk;

		__entry->len = en->ei.len;

	),



	TP_printk("dev = (%d,%d), ino = %lu, pgofs = %u, "

		"ext_info(fofs: %u, blk: %u, len: %u)",

		show_dev_ino(__entry),

		__entry->pgofs,

		__entry->fofs,

		__entry->blk,

		__entry->len)

);



TRACE_EVENT(f2fs_update_extent_tree,



	TP_PROTO(struct inode *inode, unsigned int pgofs, block_t blkaddr),



	TP_ARGS(inode, pgofs, blkaddr),



	TP_STRUCT__entry(

		__field(dev_t,	dev)

		__field(ino_t,	ino)

		__field(unsigned int, pgofs)

		__field(u32, blk)

	),



	TP_fast_assign(

		__entry->dev = inode->i_sb->s_dev;

		__entry->ino = inode->i_ino;

		__entry->pgofs = pgofs;

		__entry->blk = blkaddr;

	),



	TP_printk("dev = (%d,%d), ino = %lu, pgofs = %u, blkaddr = %u",

		show_dev_ino(__entry),

		__entry->pgofs,

		__entry->blk)

);



TRACE_EVENT(f2fs_shrink_extent_tree,



	TP_PROTO(struct f2fs_sb_info *sbi, unsigned int node_cnt,

						unsigned int tree_cnt),



	TP_ARGS(sbi, node_cnt, tree_cnt),



	TP_STRUCT__entry(

		__field(dev_t,	dev)

		__field(unsigned int, node_cnt)

		__field(unsigned int, tree_cnt)

	),



	TP_fast_assign(

		__entry->dev = sbi->sb->s_dev;

		__entry->node_cnt = node_cnt;

		__entry->tree_cnt = tree_cnt;

	),



	TP_printk("dev = (%d,%d), shrunk: node_cnt = %u, tree_cnt = %u",

		show_dev(__entry),

		__entry->node_cnt,

		__entry->tree_cnt)

);



TRACE_EVENT(f2fs_destroy_extent_tree,



	TP_PROTO(struct inode *inode, unsigned int node_cnt),



	TP_ARGS(inode, node_cnt),



	TP_STRUCT__entry(

		__field(dev_t,	dev)

		__field(ino_t,	ino)

		__field(unsigned int, node_cnt)

	),



	TP_fast_assign(

		__entry->dev = inode->i_sb->s_dev;

		__entry->ino = inode->i_ino;

		__entry->node_cnt = node_cnt;

	),



	TP_printk("dev = (%d,%d), ino = %lu, destroyed: node_cnt = %u",

		show_dev_ino(__entry),

		__entry->node_cnt)

);



#endif /* _TRACE_F2FS_H */



 /* This part must be outside protection */