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f2fs: add tracepoints for truncate operation

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add tracepoints for tracing the truncate operations
like truncate node/data blocks, f2fs_truncate etc.

Tracepoints are added at entry and exit of operation
to trace the success & failure of operation.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
[Jaegeuk: combine and modify the tracepoint structures]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
tirimbino
Namjae Jeon 12 years ago committed by Jaegeuk Kim
parent a2a4a7e4ab
commit 51dd624934
3 changed files with 203 additions and 2 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 9
      fs/f2fs/file.c
  2. 20
      fs/f2fs/node.c
  3. 176
      include/trace/events/f2fs.h

9
fs/f2fs/file.c
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@ -193,6 +193,9 @@ static int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
sync_inode_page(dn);
}
dn->ofs_in_node = ofs;
trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
dn->ofs_in_node, nr_free);
return nr_free;
}
@ -229,6 +232,8 @@ static int truncate_blocks(struct inode *inode, u64 from)
int count = 0, ilock = -1;
int err;
trace_f2fs_truncate_blocks_enter(inode, from);
free_from = (pgoff_t)
((from + blocksize - 1) >> (sbi->log_blocksize));
@ -239,6 +244,7 @@ static int truncate_blocks(struct inode *inode, u64 from)
if (err == -ENOENT)
goto free_next;
mutex_unlock_op(sbi, ilock);
trace_f2fs_truncate_blocks_exit(inode, err);
return err;
}
@ -263,6 +269,7 @@ free_next:
/* lastly zero out the first data page */
truncate_partial_data_page(inode, from);
trace_f2fs_truncate_blocks_exit(inode, err);
return err;
}
@ -272,6 +279,8 @@ void f2fs_truncate(struct inode *inode)
S_ISLNK(inode->i_mode)))
return;
trace_f2fs_truncate(inode);
if (!truncate_blocks(inode, i_size_read(inode))) {
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(inode);

20
fs/f2fs/node.c
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@ -19,6 +19,7 @@
#include "f2fs.h"
#include "node.h"
#include "segment.h"
#include <trace/events/f2fs.h>
static struct kmem_cache *nat_entry_slab;
static struct kmem_cache *free_nid_slab;
@ -508,6 +509,7 @@ invalidate:
f2fs_put_page(dn->node_page, 1);
dn->node_page = NULL;
trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr);
}
static int truncate_dnode(struct dnode_of_data *dn)
@ -548,9 +550,13 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
if (dn->nid == 0)
return NIDS_PER_BLOCK + 1;
trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr);
page = get_node_page(sbi, dn->nid);
if (IS_ERR(page))
if (IS_ERR(page)) {
trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page));
return PTR_ERR(page);
}
rn = (struct f2fs_node *)page_address(page);
if (depth < 3) {
@ -592,10 +598,12 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
} else {
f2fs_put_page(page, 1);
}
trace_f2fs_truncate_nodes_exit(dn->inode, freed);
return freed;
out_err:
f2fs_put_page(page, 1);
trace_f2fs_truncate_nodes_exit(dn->inode, ret);
return ret;
}
@ -650,6 +658,9 @@ static int truncate_partial_nodes(struct dnode_of_data *dn,
fail:
for (i = depth - 3; i >= 0; i--)
f2fs_put_page(pages[i], 1);
trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err);
return err;
}
@ -666,11 +677,15 @@ int truncate_inode_blocks(struct inode *inode, pgoff_t from)
struct dnode_of_data dn;
struct page *page;
trace_f2fs_truncate_inode_blocks_enter(inode, from);
level = get_node_path(from, offset, noffset);
page = get_node_page(sbi, inode->i_ino);
if (IS_ERR(page))
if (IS_ERR(page)) {
trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page));
return PTR_ERR(page);
}
set_new_dnode(&dn, inode, page, NULL, 0);
unlock_page(page);
@ -740,6 +755,7 @@ skip_partial:
}
fail:
f2fs_put_page(page, 0);
trace_f2fs_truncate_inode_blocks_exit(inode, err);
return err > 0 ? 0 : err;
}

176
include/trace/events/f2fs.h
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@ -189,6 +189,182 @@ DEFINE_EVENT(f2fs__inode_exit, f2fs_unlink_exit,
TP_ARGS(inode, ret)
);
DEFINE_EVENT(f2fs__inode, f2fs_truncate,
TP_PROTO(struct inode *inode),
TP_ARGS(inode)
);
TRACE_EVENT(f2fs_truncate_data_blocks_range,
TP_PROTO(struct inode *inode, nid_t nid, unsigned int ofs, int free),
TP_ARGS(inode, nid, ofs, free),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
__field(nid_t, nid)
__field(unsigned int, ofs)
__field(int, free)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->nid = nid;
__entry->ofs = ofs;
__entry->free = free;
),
TP_printk("dev = (%d,%d), ino = %lu, nid = %u, offset = %u, freed = %d",
show_dev_ino(__entry),
(unsigned int)__entry->nid,
__entry->ofs,
__entry->free)
);
DECLARE_EVENT_CLASS(f2fs__truncate_op,
TP_PROTO(struct inode *inode, u64 from),
TP_ARGS(inode, from),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
__field(loff_t, size)
__field(blkcnt_t, blocks)
__field(u64, from)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->size = inode->i_size;
__entry->blocks = inode->i_blocks;
__entry->from = from;
),
TP_printk("dev = (%d,%d), ino = %lu, i_size = %lld, i_blocks = %llu, "
"start file offset = %llu",
show_dev_ino(__entry),
__entry->size,
(unsigned long long)__entry->blocks,
(unsigned long long)__entry->from)
);
DEFINE_EVENT(f2fs__truncate_op, f2fs_truncate_blocks_enter,
TP_PROTO(struct inode *inode, u64 from),
TP_ARGS(inode, from)
);
DEFINE_EVENT(f2fs__inode_exit, f2fs_truncate_blocks_exit,
TP_PROTO(struct inode *inode, int ret),
TP_ARGS(inode, ret)
);
DEFINE_EVENT(f2fs__truncate_op, f2fs_truncate_inode_blocks_enter,
TP_PROTO(struct inode *inode, u64 from),
TP_ARGS(inode, from)
);
DEFINE_EVENT(f2fs__inode_exit, f2fs_truncate_inode_blocks_exit,
TP_PROTO(struct inode *inode, int ret),
TP_ARGS(inode, ret)
);
DECLARE_EVENT_CLASS(f2fs__truncate_node,
TP_PROTO(struct inode *inode, nid_t nid, block_t blk_addr),
TP_ARGS(inode, nid, blk_addr),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
__field(nid_t, nid)
__field(block_t, blk_addr)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->nid = nid;
__entry->blk_addr = blk_addr;
),
TP_printk("dev = (%d,%d), ino = %lu, nid = %u, block_address = 0x%llx",
show_dev_ino(__entry),
(unsigned int)__entry->nid,
(unsigned long long)__entry->blk_addr)
);
DEFINE_EVENT(f2fs__truncate_node, f2fs_truncate_nodes_enter,
TP_PROTO(struct inode *inode, nid_t nid, block_t blk_addr),
TP_ARGS(inode, nid, blk_addr)
);
DEFINE_EVENT(f2fs__inode_exit, f2fs_truncate_nodes_exit,
TP_PROTO(struct inode *inode, int ret),
TP_ARGS(inode, ret)
);
DEFINE_EVENT(f2fs__truncate_node, f2fs_truncate_node,
TP_PROTO(struct inode *inode, nid_t nid, block_t blk_addr),
TP_ARGS(inode, nid, blk_addr)
);
TRACE_EVENT(f2fs_truncate_partial_nodes,
TP_PROTO(struct inode *inode, nid_t nid[], int depth, int err),
TP_ARGS(inode, nid, depth, err),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(ino_t, ino)
__field(nid_t, nid[3])
__field(int, depth)
__field(int, err)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->nid[0] = nid[0];
__entry->nid[1] = nid[1];
__entry->nid[2] = nid[2];
__entry->depth = depth;
__entry->err = err;
),
TP_printk("dev = (%d,%d), ino = %lu, "
"nid[0] = %u, nid[1] = %u, nid[2] = %u, depth = %d, err = %d",
show_dev_ino(__entry),
(unsigned int)__entry->nid[0],
(unsigned int)__entry->nid[1],
(unsigned int)__entry->nid[2],
__entry->depth,
__entry->err)
);
#endif /* _TRACE_F2FS_H */
/* This part must be outside protection */

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