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>

1 files changed, 176 insertions, 0 deletions

diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 03bb0dbf468d..4bbd19f79d27 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -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 */