On Mon, Feb 04, 2019 at 09:59:58AM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
>
> Add tracepoints so we can associate high level operations with low level
> updates. No functional changes.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>
> fs/xfs/xfs_inode.c | 2 ++
> fs/xfs/xfs_trace.h | 25 +++++++++++++++++++++++++
> 2 files changed, 27 insertions(+)
>
>
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index fac9562ecd39..b9696d762c8f 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -2023,6 +2023,7 @@ xfs_iunlink(
>
> ASSERT(VFS_I(ip)->i_mode != 0);
> pag = xfs_perag_get(mp, agno);
> + trace_xfs_iunlink(ip);
>
> /* Get the agi buffer first. It ensures lock ordering on the list. */
> error = xfs_read_agi(mp, tp, agno, &agibp);
> @@ -2188,6 +2189,7 @@ xfs_iunlink_remove(
> int error;
>
> pag = xfs_perag_get(mp, agno);
> + trace_xfs_iunlink_remove(ip);
>
> /* Get the agi buffer first. It ensures lock ordering on the list. */
> error = xfs_read_agi(mp, tp, agno, &agibp);
> diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
> index fbec8f0e1a9a..a6e384a642b1 100644
> --- a/fs/xfs/xfs_trace.h
> +++ b/fs/xfs/xfs_trace.h
> @@ -3423,6 +3423,31 @@ TRACE_EVENT(xfs_iunlink_update_dinode,
> __entry->new_ptr)
> );
>
> +DECLARE_EVENT_CLASS(xfs_ag_inode_class,
> + TP_PROTO(struct xfs_inode *ip),
> + TP_ARGS(ip),
> + TP_STRUCT__entry(
> + __field(dev_t, dev)
> + __field(xfs_agnumber_t, agno)
> + __field(xfs_agino_t, agino)
> + ),
> + TP_fast_assign(
> + __entry->dev = VFS_I(ip)->i_sb->s_dev;
> + __entry->agno = XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino);
> + __entry->agino = XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino);
> + ),
> + TP_printk("dev %d:%d agno %u agino %u",
> + MAJOR(__entry->dev), MINOR(__entry->dev),
> + __entry->agno, __entry->agino)
> +)
> +
> +#define DEFINE_AGINODE_EVENT(name) \
> +DEFINE_EVENT(xfs_ag_inode_class, name, \
> + TP_PROTO(struct xfs_inode *ip), \
> + TP_ARGS(ip))
> +DEFINE_AGINODE_EVENT(xfs_iunlink);
> +DEFINE_AGINODE_EVENT(xfs_iunlink_remove);
> +
> #endif /* _TRACE_XFS_H */
>
> #undef TRACE_INCLUDE_PATH
>
