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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: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
hifive-unleashed-5.1
Chao Yu 2015-02-05 17:59:59 +08:00 committed by Jaegeuk Kim
parent 4bf6fd9fed
commit 1ec4610c52
2 changed files with 148 additions and 2 deletions
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16
fs/f2fs/data.c
View File

@ -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;
}

134
include/trace/events/f2fs.h
View File

@ -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 */