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include: trace: Add SCMI header with trace events 

Adding trace events would help to measure the speed of the communication
channel. It can be also potentially used helpful during investigation
of some issues platforms which use different transport layer.

Update also MAINTAINERS file with information that the new trace events
are maintained.

Suggested-by: Jim Quinlan <james.quinlan@broadcom.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Lukasz Luba 2019-12-17 13:43:44 +00:00 committed by Sudeep Holla
parent 34ce3c5e69
commit 257d0e20ec
2 changed files with 91 additions and 0 deletions
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1
MAINTAINERS
View File

@ -15965,6 +15965,7 @@ F: drivers/firmware/arm_scpi.c
F: drivers/firmware/arm_scmi/
F: drivers/reset/reset-scmi.c
F: include/linux/sc[mp]i_protocol.h
F: include/trace/events/scmi.h
SYSTEM RESET/SHUTDOWN DRIVERS
M: Sebastian Reichel <sre@kernel.org>

90
include/trace/events/scmi.h Normal file
View File

@ -0,0 +1,90 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM scmi
#if !defined(_TRACE_SCMI_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_SCMI_H
#include <linux/tracepoint.h>
TRACE_EVENT(scmi_xfer_begin,
TP_PROTO(int transfer_id, u8 msg_id, u8 protocol_id, u16 seq,
bool poll),
TP_ARGS(transfer_id, msg_id, protocol_id, seq, poll),
TP_STRUCT__entry(
__field(int, transfer_id)
__field(u8, msg_id)
__field(u8, protocol_id)
__field(u16, seq)
__field(bool, poll)
),
TP_fast_assign(
__entry->transfer_id = transfer_id;
__entry->msg_id = msg_id;
__entry->protocol_id = protocol_id;
__entry->seq = seq;
__entry->poll = poll;
),
TP_printk("transfer_id=%d msg_id=%u protocol_id=%u seq=%u poll=%u",
__entry->transfer_id, __entry->msg_id, __entry->protocol_id,
__entry->seq, __entry->poll)
);
TRACE_EVENT(scmi_xfer_end,
TP_PROTO(int transfer_id, u8 msg_id, u8 protocol_id, u16 seq,
u32 status),
TP_ARGS(transfer_id, msg_id, protocol_id, seq, status),
TP_STRUCT__entry(
__field(int, transfer_id)
__field(u8, msg_id)
__field(u8, protocol_id)
__field(u16, seq)
__field(u32, status)
),
TP_fast_assign(
__entry->transfer_id = transfer_id;
__entry->msg_id = msg_id;
__entry->protocol_id = protocol_id;
__entry->seq = seq;
__entry->status = status;
),
TP_printk("transfer_id=%d msg_id=%u protocol_id=%u seq=%u status=%u",
__entry->transfer_id, __entry->msg_id, __entry->protocol_id,
__entry->seq, __entry->status)
);
TRACE_EVENT(scmi_rx_done,
TP_PROTO(int transfer_id, u8 msg_id, u8 protocol_id, u16 seq,
u8 msg_type),
TP_ARGS(transfer_id, msg_id, protocol_id, seq, msg_type),
TP_STRUCT__entry(
__field(int, transfer_id)
__field(u8, msg_id)
__field(u8, protocol_id)
__field(u16, seq)
__field(u8, msg_type)
),
TP_fast_assign(
__entry->transfer_id = transfer_id;
__entry->msg_id = msg_id;
__entry->protocol_id = protocol_id;
__entry->seq = seq;
__entry->msg_type = msg_type;
),
TP_printk("transfer_id=%d msg_id=%u protocol_id=%u seq=%u msg_type=%u",
__entry->transfer_id, __entry->msg_id, __entry->protocol_id,
__entry->seq, __entry->msg_type)
);
#endif /* _TRACE_SCMI_H */
/* This part must be outside protection */
#include <trace/define_trace.h>