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ext4: add tracepoint in punching hole

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This patch adds a tracepoint in ext4_punch_hole.

CC: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Zheng Liu 2013-01-16 20:21:26 -05:00 committed by Theodore Ts'o
parent 7f5118629f
commit aaddea812c
2 changed files with 27 additions and 0 deletions
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2
fs/ext4/inode.c
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@ -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);
}

25
include/trace/events/ext4.h
View File

@ -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),