The uuid printed in the well known events is redundant.  The uuid
defines what the event was.

Remove the uuid from the known events and only report it in the generic
event as it remains informative there.

Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 drivers/cxl/core/trace.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/cxl/core/trace.h b/drivers/cxl/core/trace.h
index a0b5819bc70b..79ed03637604 100644
--- a/drivers/cxl/core/trace.h
+++ b/drivers/cxl/core/trace.h
@@ -189,7 +189,6 @@ TRACE_EVENT(cxl_overflow,
 	__string(memdev, dev_name(&cxlmd->dev))			\
 	__string(host, dev_name(cxlmd->dev.parent))		\
 	__field(int, log)					\
-	__field_struct(uuid_t, hdr_uuid)			\
 	__field(u64, serial)					\
 	__field(u32, hdr_flags)					\
 	__field(u16, hdr_handle)				\
@@ -203,7 +202,6 @@ TRACE_EVENT(cxl_overflow,
 	__assign_str(host, dev_name((cxlmd)->dev.parent));			\
 	__entry->log = (l);							\
 	__entry->serial = (cxlmd)->cxlds->serial;				\
-	memcpy(&__entry->hdr_uuid, &(hdr).id, sizeof(uuid_t));			\
 	__entry->hdr_length = (hdr).length;					\
 	__entry->hdr_flags = get_unaligned_le24((hdr).flags);			\
 	__entry->hdr_handle = le16_to_cpu((hdr).handle);			\
@@ -212,12 +210,12 @@ TRACE_EVENT(cxl_overflow,
 	__entry->hdr_maint_op_class = (hdr).maint_op_class
 
 #define CXL_EVT_TP_printk(fmt, ...) \
-	TP_printk("memdev=%s host=%s serial=%lld log=%s : time=%llu uuid=%pUb "	\
+	TP_printk("memdev=%s host=%s serial=%lld log=%s : time=%llu "		\
 		"len=%d flags='%s' handle=%x related_handle=%x "		\
 		"maint_op_class=%u : " fmt,					\
 		__get_str(memdev), __get_str(host), __entry->serial,		\
 		cxl_event_log_type_str(__entry->log),				\
-		__entry->hdr_timestamp, &__entry->hdr_uuid, __entry->hdr_length,\
+		__entry->hdr_timestamp, __entry->hdr_length,			\
 		show_hdr_flags(__entry->hdr_flags), __entry->hdr_handle,	\
 		__entry->hdr_related_handle, __entry->hdr_maint_op_class,	\
 		##__VA_ARGS__)
@@ -231,15 +229,17 @@ TRACE_EVENT(cxl_generic_event,
 
 	TP_STRUCT__entry(
 		CXL_EVT_TP_entry
+		__field_struct(uuid_t, hdr_uuid)
 		__array(u8, data, CXL_EVENT_RECORD_DATA_LENGTH)
 	),
 
 	TP_fast_assign(
 		CXL_EVT_TP_fast_assign(cxlmd, log, rec->hdr);
+		memcpy(&__entry->hdr_uuid, &rec->hdr.id, sizeof(uuid_t));
 		memcpy(__entry->data, &rec->data, CXL_EVENT_RECORD_DATA_LENGTH);
 	),
 
-	CXL_EVT_TP_printk("%s",
+	CXL_EVT_TP_printk("uuid=%pUb %s", &__entry->hdr_uuid,
 		__print_hex(__entry->data, CXL_EVENT_RECORD_DATA_LENGTH))
 );
 

-- 
2.41.0

On Thu, 26 Oct 2023, Ira Weiny wrote:

>The uuid printed in the well known events is redundant.  The uuid
>defines what the event was.
>
>Remove the uuid from the known events and only report it in the generic
>event as it remains informative there.
>
>Signed-off-by: Ira Weiny <ira.weiny@intel.com>

Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>

Ira Weiny wrote:
> The uuid printed in the well known events is redundant.  The uuid
> defines what the event was.
> 
> Remove the uuid from the known events and only report it in the generic
> event as it remains informative there.
> 
> Signed-off-by: Ira Weiny <ira.weiny@intel.com>

Looks good to me:

Reviewed-by: Dan Williams <dan.j.williams@intel.com>