Add tracing support for swapping inodes.
Signed-off-by: Jie Liu <jeff.liu@xxxxxxxxxx>
---
fs/xfs/xfs_dfrag.c | 6 ++++++
fs/xfs/xfs_trace.h | 37 +++++++++++++++++++++++++++++++++++++
2 files changed, 43 insertions(+), 0 deletions(-)
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index f91b79c..0e3e53c 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -510,6 +510,9 @@ xfs_swap_inodes(
goto out_unlock;
}
+ trace_xfs_swap_inode_before(ip, 0);
+ trace_xfs_swap_inode_before(tip, 1);
+
/*
* We need to fail if the file is memory mapped. Once we have tossed
* all existing pages, the page fault will have no option but to go to
@@ -614,6 +617,9 @@ xfs_swap_inodes(
error = xfs_trans_commit(tp, 0);
+ trace_xfs_swap_inode_after(ip, 0);
+ trace_xfs_swap_inode_after(tip, 1);
+
out:
if (dic)
kmem_free(dic);
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 7d36ccf..b4dcb70 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -1664,6 +1664,43 @@ DEFINE_EVENT(xfs_swap_extent_class, name, \
DEFINE_SWAPEXT_EVENT(xfs_swap_extent_before);
DEFINE_SWAPEXT_EVENT(xfs_swap_extent_after);
+#define XFS_SWAPINO_INODES \
+ { 0, "target" }, \
+ { 1, "temp" }
+
+DECLARE_EVENT_CLASS(xfs_swap_inode_class,
+ TP_PROTO(struct xfs_inode *ip, int which),
+ TP_ARGS(ip, which),
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(int, which)
+ __field(xfs_ino_t, ino)
+ __field(int, format)
+ __field(int, fork_off)
+ ),
+ TP_fast_assign(
+ __entry->dev = VFS_I(ip)->i_sb->s_dev;
+ __entry->which = which;
+ __entry->ino = ip->i_ino;
+ __entry->format = ip->i_d.di_format;
+ __entry->fork_off = XFS_IFORK_BOFF(ip);
+ ),
+ TP_printk("dev %d:%d ino 0x%llx (%s), %s format, fork offset %d",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->ino,
+ __print_symbolic(__entry->which, XFS_SWAPINO_INODES),
+ __print_symbolic(__entry->format, XFS_INODE_FORMAT_STR),
+ __entry->fork_off)
+)
+
+#define DEFINE_SWAPINO_EVENT(name) \
+DEFINE_EVENT(xfs_swap_inode_class, name, \
+ TP_PROTO(struct xfs_inode *ip, int which), \
+ TP_ARGS(ip, which))
+
+DEFINE_SWAPINO_EVENT(xfs_swap_inode_before);
+DEFINE_SWAPINO_EVENT(xfs_swap_inode_after);
+
DECLARE_EVENT_CLASS(xfs_log_recover_item_class,
TP_PROTO(struct xlog *log, struct xlog_recover *trans,
struct xlog_recover_item *item, int pass),
--
1.7.4.1
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