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Commit aaddea81 authored by Zheng Liu's avatar Zheng Liu Committed by Theodore Ts'o
Browse files

ext4: add tracepoint in punching hole 



This patch adds a tracepoint in ext4_punch_hole.

CC: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: default avatarZheng Liu <wenqing.lz@taobao.com>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 7f511862

fs/ext4/inode.c

+2 −0
Original line number Diff line number Diff line
@@ -3567,6 +3567,8 @@ int ext4_punch_hole(struct file *file, loff_t offset, loff_t length) 
		return -EOPNOTSUPP;

	}



	trace_ext4_punch_hole(inode, offset, length);



	return ext4_ext_punch_hole(file, offset, length);

}

include/trace/events/ext4.h

+25 −0
Original line number Diff line number Diff line
@@ -1324,6 +1324,31 @@ TRACE_EVENT(ext4_fallocate_exit, 
		  __entry->ret)

);



TRACE_EVENT(ext4_punch_hole,

	TP_PROTO(struct inode *inode, loff_t offset, loff_t len),



	TP_ARGS(inode, offset, len),



	TP_STRUCT__entry(

		__field(	dev_t,	dev			)

		__field(	ino_t,	ino			)

		__field(	loff_t,	offset			)

		__field(	loff_t, len			)

	),



	TP_fast_assign(

		__entry->dev	= inode->i_sb->s_dev;

		__entry->ino	= inode->i_ino;

		__entry->offset	= offset;

		__entry->len	= len;

	),



	TP_printk("dev %d,%d ino %lu offset %lld len %lld",

		  MAJOR(__entry->dev), MINOR(__entry->dev),

		  (unsigned long) __entry->ino,

		  __entry->offset, __entry->len)

);



TRACE_EVENT(ext4_unlink_enter,

	TP_PROTO(struct inode *parent, struct dentry *dentry),