[PATCH] trace: ras: print the raw data of arm processor error info

[Xie XiuQi]

User space tools such as rasdaemon need the complete error
information from trace event. So, we print the raw data of
error information in arm_event.

In the past, I try to parse them in trace event, but it's
hard to deal the dynamic error item. And in commit 301f55b1a917
("efi: Parse ARM error information value"), the error information
already been parsed to syslog.

So, just print the raw data in trace event for simpler.

Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Tyler Baicar <tbaicar@xxxxxxxxxxxxxx>
Signed-off-by: Xie XiuQi <xiexiuqi@xxxxxxxxxx>
---
 include/ras/ras_event.h | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h
index 36c5c5e38c1d..2023ba9206b3 100644
--- a/include/ras/ras_event.h
+++ b/include/ras/ras_event.h
@@ -180,6 +180,9 @@ TRACE_EVENT(arm_event,
 		__field(u32, running_state)
 		__field(u32, psci_state)
 		__field(u8, affinity)
+		__field(u32, count)
+		__field(u32, len)
+		__dynamic_array(u8, err_info, proc->err_info_num * sizeof(struct cper_arm_err_info))
 	),
 
 	TP_fast_assign(
@@ -199,12 +202,18 @@ TRACE_EVENT(arm_event,
 			__entry->running_state = ~0;
 			__entry->psci_state = ~0;
 		}
+
+		__entry->count = proc->err_info_num;
+		__entry->len = __entry->count * sizeof(struct cper_arm_err_info);
+		memcpy(__get_dynamic_array(err_info), proc + 1, __entry->len);
 	),
 
 	TP_printk("affinity level: %d; MPIDR: %016llx; MIDR: %016llx; "
-		  "running state: %d; PSCI state: %d",
+		  "running state: %d; PSCI state: %d; error count: %d; "
+		  "raw data: %s",
 		  __entry->affinity, __entry->mpidr, __entry->midr,
-		  __entry->running_state, __entry->psci_state)
+		  __entry->running_state, __entry->psci_state, __entry->count,
+		  __print_hex(__get_dynamic_array(err_info), __entry->len))
 );
 
 /*
-- 
2.20.1