On 11/28/18 5:29 PM, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
>
> Use __print_symbolic to print the btree type in ftrace output.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Ignore my previous question.
(if scrub's trace file starts duplicating too much of the common trace stuff,
though, we may want a common include file?)
But for now
Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>
> ---
> fs/xfs/libxfs/xfs_types.h | 9 +++++++++
> fs/xfs/scrub/trace.h | 38 ++++++++++++++++++++++++++------------
> fs/xfs/xfs_trace.h | 12 ++++++++++--
> 3 files changed, 45 insertions(+), 14 deletions(-)
>
>
> diff --git a/fs/xfs/libxfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h
> index 297cf2318f83..eb04afe9cce0 100644
> --- a/fs/xfs/libxfs/xfs_types.h
> +++ b/fs/xfs/libxfs/xfs_types.h
> @@ -114,6 +114,15 @@ typedef enum {
> XFS_BTNUM_INOi, XFS_BTNUM_FINOi, XFS_BTNUM_REFCi, XFS_BTNUM_MAX
> } xfs_btnum_t;
>
> +#define XFS_BTNUM_STRINGS \
> + { XFS_BTNUM_BNOi, "bnobt" }, \
> + { XFS_BTNUM_CNTi, "cntbt" }, \
> + { XFS_BTNUM_RMAPi, "rmapbt" }, \
> + { XFS_BTNUM_BMAPi, "bmbt" }, \
> + { XFS_BTNUM_INOi, "inobt" }, \
> + { XFS_BTNUM_FINOi, "finobt" }, \
> + { XFS_BTNUM_REFCi, "refcbt" }
> +
> struct xfs_name {
> const unsigned char *name;
> int len;
> diff --git a/fs/xfs/scrub/trace.h b/fs/xfs/scrub/trace.h
> index d67e915cf91a..0141eb1ac091 100644
> --- a/fs/xfs/scrub/trace.h
> +++ b/fs/xfs/scrub/trace.h
> @@ -12,6 +12,20 @@
> #include <linux/tracepoint.h>
> #include "xfs_bit.h"
>
> +/*
> + * ftrace's __print_symbolic requires that all enum values be wrapped in the
> + * TRACE_DEFINE_ENUM macro so that the enum value can be encoded in the ftrace
> + * ring buffer. Somehow this was only worth mentioning in the ftrace sample
> + * code.
> + */
> +TRACE_DEFINE_ENUM(XFS_BTNUM_BNOi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_CNTi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_BMAPi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_INOi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_FINOi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_RMAPi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_REFCi);
> +
> DECLARE_EVENT_CLASS(xchk_class,
> TP_PROTO(struct xfs_inode *ip, struct xfs_scrub_metadata *sm,
> int error),
> @@ -278,10 +292,10 @@ TRACE_EVENT(xchk_btree_op_error,
> __entry->error = error;
> __entry->ret_ip = ret_ip;
> ),
> - TP_printk("dev %d:%d type %u btnum %d level %d ptr %d agno %u agbno %u error %d ret_ip %pS",
> + TP_printk("dev %d:%d type %u btree %s level %d ptr %d agno %u agbno %u error %d ret_ip %pS",
> MAJOR(__entry->dev), MINOR(__entry->dev),
> __entry->type,
> - __entry->btnum,
> + __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS),
> __entry->level,
> __entry->ptr,
> __entry->agno,
> @@ -321,12 +335,12 @@ TRACE_EVENT(xchk_ifork_btree_op_error,
> __entry->error = error;
> __entry->ret_ip = ret_ip;
> ),
> - TP_printk("dev %d:%d ino 0x%llx fork %d type %u btnum %d level %d ptr %d agno %u agbno %u error %d ret_ip %pS",
> + TP_printk("dev %d:%d ino 0x%llx fork %d type %u btree %s level %d ptr %d agno %u agbno %u error %d ret_ip %pS",
> MAJOR(__entry->dev), MINOR(__entry->dev),
> __entry->ino,
> __entry->whichfork,
> __entry->type,
> - __entry->btnum,
> + __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS),
> __entry->level,
> __entry->ptr,
> __entry->agno,
> @@ -360,10 +374,10 @@ TRACE_EVENT(xchk_btree_error,
> __entry->ptr = cur->bc_ptrs[level];
> __entry->ret_ip = ret_ip;
> ),
> - TP_printk("dev %d:%d type %u btnum %d level %d ptr %d agno %u agbno %u ret_ip %pS",
> + TP_printk("dev %d:%d type %u btree %s level %d ptr %d agno %u agbno %u ret_ip %pS",
> MAJOR(__entry->dev), MINOR(__entry->dev),
> __entry->type,
> - __entry->btnum,
> + __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS),
> __entry->level,
> __entry->ptr,
> __entry->agno,
> @@ -400,12 +414,12 @@ TRACE_EVENT(xchk_ifork_btree_error,
> __entry->ptr = cur->bc_ptrs[level];
> __entry->ret_ip = ret_ip;
> ),
> - TP_printk("dev %d:%d ino 0x%llx fork %d type %u btnum %d level %d ptr %d agno %u agbno %u ret_ip %pS",
> + TP_printk("dev %d:%d ino 0x%llx fork %d type %u btree %s level %d ptr %d agno %u agbno %u ret_ip %pS",
> MAJOR(__entry->dev), MINOR(__entry->dev),
> __entry->ino,
> __entry->whichfork,
> __entry->type,
> - __entry->btnum,
> + __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS),
> __entry->level,
> __entry->ptr,
> __entry->agno,
> @@ -439,10 +453,10 @@ DECLARE_EVENT_CLASS(xchk_sbtree_class,
> __entry->nlevels = cur->bc_nlevels;
> __entry->ptr = cur->bc_ptrs[level];
> ),
> - TP_printk("dev %d:%d type %u btnum %d agno %u agbno %u level %d nlevels %d ptr %d",
> + TP_printk("dev %d:%d type %u btree %s agno %u agbno %u level %d nlevels %d ptr %d",
> MAJOR(__entry->dev), MINOR(__entry->dev),
> __entry->type,
> - __entry->btnum,
> + __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS),
> __entry->agno,
> __entry->bno,
> __entry->level,
> @@ -643,11 +657,11 @@ TRACE_EVENT(xrep_init_btblock,
> __entry->agbno = agbno;
> __entry->btnum = btnum;
> ),
> - TP_printk("dev %d:%d agno %u agbno %u btnum %d",
> + TP_printk("dev %d:%d agno %u agbno %u btree %s",
> MAJOR(__entry->dev), MINOR(__entry->dev),
> __entry->agno,
> __entry->agbno,
> - __entry->btnum)
> + __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS))
> )
> TRACE_EVENT(xrep_findroot_block,
> TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agblock_t agbno,
> diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
> index 94e289aca220..6fcc893dfc91 100644
> --- a/fs/xfs/xfs_trace.h
> +++ b/fs/xfs/xfs_trace.h
> @@ -2194,6 +2194,14 @@ DEFINE_DISCARD_EVENT(xfs_discard_exclude);
> DEFINE_DISCARD_EVENT(xfs_discard_busy);
>
> /* btree cursor events */
> +TRACE_DEFINE_ENUM(XFS_BTNUM_BNOi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_CNTi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_BMAPi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_INOi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_FINOi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_RMAPi);
> +TRACE_DEFINE_ENUM(XFS_BTNUM_REFCi);
> +
> DECLARE_EVENT_CLASS(xfs_btree_cur_class,
> TP_PROTO(struct xfs_btree_cur *cur, int level, struct xfs_buf *bp),
> TP_ARGS(cur, level, bp),
> @@ -2213,9 +2221,9 @@ DECLARE_EVENT_CLASS(xfs_btree_cur_class,
> __entry->ptr = cur->bc_ptrs[level];
> __entry->daddr = bp ? bp->b_bn : -1;
> ),
> - TP_printk("dev %d:%d btnum %d level %d/%d ptr %d daddr 0x%llx",
> + TP_printk("dev %d:%d btree %s level %d/%d ptr %d daddr 0x%llx",
> MAJOR(__entry->dev), MINOR(__entry->dev),
> - __entry->btnum,
> + __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS),
> __entry->level,
> __entry->nlevels,
> __entry->ptr,
>
