forked from Minki/linux
f2fs: add tracepoints for truncate operation
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>
This commit is contained in:
Namjae Jeon
Jaegeuk Kim
parent
a2a4a7e4ab
commit
51dd624934
@ -193,6 +193,9 @@ static int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
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sync_inode_page(dn);
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}
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dn->ofs_in_node = ofs;
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trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
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dn->ofs_in_node, nr_free);
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return nr_free;
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}
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@ -229,6 +232,8 @@ static int truncate_blocks(struct inode *inode, u64 from)
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int count = 0, ilock = -1;
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int err;
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trace_f2fs_truncate_blocks_enter(inode, from);
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free_from = (pgoff_t)
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((from + blocksize - 1) >> (sbi->log_blocksize));
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@ -239,6 +244,7 @@ static int truncate_blocks(struct inode *inode, u64 from)
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if (err == -ENOENT)
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goto free_next;
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mutex_unlock_op(sbi, ilock);
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trace_f2fs_truncate_blocks_exit(inode, err);
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return err;
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}
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@ -263,6 +269,7 @@ free_next:
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/* lastly zero out the first data page */
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truncate_partial_data_page(inode, from);
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trace_f2fs_truncate_blocks_exit(inode, err);
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return err;
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}
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@ -272,6 +279,8 @@ void f2fs_truncate(struct inode *inode)
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S_ISLNK(inode->i_mode)))
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return;
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trace_f2fs_truncate(inode);
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if (!truncate_blocks(inode, i_size_read(inode))) {
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inode->i_mtime = inode->i_ctime = CURRENT_TIME;
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mark_inode_dirty(inode);
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@ -19,6 +19,7 @@
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#include "f2fs.h"
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#include "node.h"
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#include "segment.h"
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#include <trace/events/f2fs.h>
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static struct kmem_cache *nat_entry_slab;
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static struct kmem_cache *free_nid_slab;
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@ -508,6 +509,7 @@ invalidate:
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f2fs_put_page(dn->node_page, 1);
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dn->node_page = NULL;
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trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr);
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}
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static int truncate_dnode(struct dnode_of_data *dn)
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@ -548,9 +550,13 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
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if (dn->nid == 0)
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return NIDS_PER_BLOCK + 1;
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trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr);
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page = get_node_page(sbi, dn->nid);
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if (IS_ERR(page))
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if (IS_ERR(page)) {
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trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page));
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return PTR_ERR(page);
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}
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rn = (struct f2fs_node *)page_address(page);
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if (depth < 3) {
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@ -592,10 +598,12 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
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} else {
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f2fs_put_page(page, 1);
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}
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trace_f2fs_truncate_nodes_exit(dn->inode, freed);
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return freed;
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out_err:
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f2fs_put_page(page, 1);
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trace_f2fs_truncate_nodes_exit(dn->inode, ret);
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return ret;
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}
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@ -650,6 +658,9 @@ static int truncate_partial_nodes(struct dnode_of_data *dn,
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fail:
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for (i = depth - 3; i >= 0; i--)
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f2fs_put_page(pages[i], 1);
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trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err);
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return err;
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}
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@ -666,11 +677,15 @@ int truncate_inode_blocks(struct inode *inode, pgoff_t from)
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struct dnode_of_data dn;
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struct page *page;
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trace_f2fs_truncate_inode_blocks_enter(inode, from);
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level = get_node_path(from, offset, noffset);
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page = get_node_page(sbi, inode->i_ino);
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if (IS_ERR(page))
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if (IS_ERR(page)) {
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trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page));
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return PTR_ERR(page);
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}
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set_new_dnode(&dn, inode, page, NULL, 0);
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unlock_page(page);
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@ -740,6 +755,7 @@ skip_partial:
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}
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fail:
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f2fs_put_page(page, 0);
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trace_f2fs_truncate_inode_blocks_exit(inode, err);
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return err > 0 ? 0 : err;
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}
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@ -189,6 +189,182 @@ DEFINE_EVENT(f2fs__inode_exit, f2fs_unlink_exit,
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TP_ARGS(inode, ret)
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);
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DEFINE_EVENT(f2fs__inode, f2fs_truncate,
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TP_PROTO(struct inode *inode),
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TP_ARGS(inode)
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);
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TRACE_EVENT(f2fs_truncate_data_blocks_range,
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TP_PROTO(struct inode *inode, nid_t nid, unsigned int ofs, int free),
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TP_ARGS(inode, nid, ofs, free),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(ino_t, ino)
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__field(nid_t, nid)
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__field(unsigned int, ofs)
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__field(int, free)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->nid = nid;
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__entry->ofs = ofs;
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__entry->free = free;
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),
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TP_printk("dev = (%d,%d), ino = %lu, nid = %u, offset = %u, freed = %d",
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show_dev_ino(__entry),
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(unsigned int)__entry->nid,
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__entry->ofs,
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__entry->free)
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);
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DECLARE_EVENT_CLASS(f2fs__truncate_op,
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TP_PROTO(struct inode *inode, u64 from),
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TP_ARGS(inode, from),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(ino_t, ino)
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__field(loff_t, size)
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__field(blkcnt_t, blocks)
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__field(u64, from)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->size = inode->i_size;
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__entry->blocks = inode->i_blocks;
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__entry->from = from;
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),
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TP_printk("dev = (%d,%d), ino = %lu, i_size = %lld, i_blocks = %llu, "
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"start file offset = %llu",
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show_dev_ino(__entry),
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__entry->size,
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(unsigned long long)__entry->blocks,
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(unsigned long long)__entry->from)
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);
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DEFINE_EVENT(f2fs__truncate_op, f2fs_truncate_blocks_enter,
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TP_PROTO(struct inode *inode, u64 from),
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TP_ARGS(inode, from)
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);
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DEFINE_EVENT(f2fs__inode_exit, f2fs_truncate_blocks_exit,
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TP_PROTO(struct inode *inode, int ret),
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TP_ARGS(inode, ret)
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);
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DEFINE_EVENT(f2fs__truncate_op, f2fs_truncate_inode_blocks_enter,
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TP_PROTO(struct inode *inode, u64 from),
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TP_ARGS(inode, from)
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);
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DEFINE_EVENT(f2fs__inode_exit, f2fs_truncate_inode_blocks_exit,
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TP_PROTO(struct inode *inode, int ret),
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TP_ARGS(inode, ret)
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);
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DECLARE_EVENT_CLASS(f2fs__truncate_node,
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TP_PROTO(struct inode *inode, nid_t nid, block_t blk_addr),
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TP_ARGS(inode, nid, blk_addr),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(ino_t, ino)
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__field(nid_t, nid)
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__field(block_t, blk_addr)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->nid = nid;
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__entry->blk_addr = blk_addr;
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),
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TP_printk("dev = (%d,%d), ino = %lu, nid = %u, block_address = 0x%llx",
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show_dev_ino(__entry),
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(unsigned int)__entry->nid,
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(unsigned long long)__entry->blk_addr)
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);
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DEFINE_EVENT(f2fs__truncate_node, f2fs_truncate_nodes_enter,
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TP_PROTO(struct inode *inode, nid_t nid, block_t blk_addr),
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TP_ARGS(inode, nid, blk_addr)
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);
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DEFINE_EVENT(f2fs__inode_exit, f2fs_truncate_nodes_exit,
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TP_PROTO(struct inode *inode, int ret),
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TP_ARGS(inode, ret)
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);
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DEFINE_EVENT(f2fs__truncate_node, f2fs_truncate_node,
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TP_PROTO(struct inode *inode, nid_t nid, block_t blk_addr),
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TP_ARGS(inode, nid, blk_addr)
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);
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TRACE_EVENT(f2fs_truncate_partial_nodes,
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TP_PROTO(struct inode *inode, nid_t nid[], int depth, int err),
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TP_ARGS(inode, nid, depth, err),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(ino_t, ino)
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__field(nid_t, nid[3])
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__field(int, depth)
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__field(int, err)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->nid[0] = nid[0];
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__entry->nid[1] = nid[1];
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__entry->nid[2] = nid[2];
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__entry->depth = depth;
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__entry->err = err;
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),
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TP_printk("dev = (%d,%d), ino = %lu, "
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"nid[0] = %u, nid[1] = %u, nid[2] = %u, depth = %d, err = %d",
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show_dev_ino(__entry),
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(unsigned int)__entry->nid[0],
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(unsigned int)__entry->nid[1],
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(unsigned int)__entry->nid[2],
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__entry->depth,
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__entry->err)
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);
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#endif /* _TRACE_F2FS_H */
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/* This part must be outside protection */
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