f2fs: add tracepoint for f2fs_direct_IO

This patch adds a tracepoint for f2fs_direct_IO.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 63 insertions, 0 deletions

diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 7d2e70e75f16..d06d44363fea 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -587,6 +587,69 @@ TRACE_EVENT(f2fs_fallocate,
                 __entry->ret)
 );
 
+TRACE_EVENT(f2fs_direct_IO_enter,
+
+        TP_PROTO(struct inode *inode, loff_t offset, unsigned long len, int rw),
+
+        TP_ARGS(inode, offset, len, rw),
+
+        TP_STRUCT__entry(
+                __field(dev_t,  dev)
+                __field(ino_t,  ino)
+                __field(loff_t, pos)
+                __field(unsigned long,  len)
+                __field(int,    rw)
+        ),
+
+        TP_fast_assign(
+                __entry->dev    = inode->i_sb->s_dev;
+                __entry->ino    = inode->i_ino;
+                __entry->pos    = offset;
+                __entry->len    = len;
+                __entry->rw     = rw;
+        ),
+
+        TP_printk("dev = (%d,%d), ino = %lu pos = %lld len = %lu rw = %d",
+                show_dev_ino(__entry),
+                __entry->pos,
+                __entry->len,
+                __entry->rw)
+);
+
+TRACE_EVENT(f2fs_direct_IO_exit,
+
+        TP_PROTO(struct inode *inode, loff_t offset, unsigned long len,
+                 int rw, int ret),
+
+        TP_ARGS(inode, offset, len, rw, ret),
+
+        TP_STRUCT__entry(
+                __field(dev_t,  dev)
+                __field(ino_t,  ino)
+                __field(loff_t, pos)
+                __field(unsigned long,  len)
+                __field(int,    rw)
+                __field(int,    ret)
+        ),
+
+        TP_fast_assign(
+                __entry->dev    = inode->i_sb->s_dev;
+                __entry->ino    = inode->i_ino;
+                __entry->pos    = offset;
+                __entry->len    = len;
+                __entry->rw     = rw;
+                __entry->ret    = ret;
+        ),
+
+        TP_printk("dev = (%d,%d), ino = %lu pos = %lld len = %lu "
+                "rw = %d ret = %d",
+                show_dev_ino(__entry),
+                __entry->pos,
+                __entry->len,
+                __entry->rw,
+                __entry->ret)
+);
+
 TRACE_EVENT(f2fs_reserve_new_block,
 
         TP_PROTO(struct inode *inode, nid_t nid, unsigned int ofs_in_node),