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soc: qcom: aoss: Add tracepoints in qmp_send()

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Add tracepoint for tracing the messages being sent and the success
thereof. This is useful as the system has a variety of clients sending
requests to the always-on subsystem.

Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Link: https://lore.kernel.org/r/20240123-qcom-aoss-tracepoints-v2-1-bd73baa31977@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Bjorn Andersson 2024-01-23 19:40:33 -08:00 committed by Bjorn Andersson
parent d7f3a3691e
commit 651893a7c9
3 changed files with 56 additions and 0 deletions
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1
drivers/soc/qcom/Makefile
View File

@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
CFLAGS_rpmh-rsc.o := -I$(src)
CFLAGS_qcom_aoss.o := -I$(src)
obj-$(CONFIG_QCOM_AOSS_QMP) += qcom_aoss.o
obj-$(CONFIG_QCOM_GENI_SE) += qcom-geni-se.o
obj-$(CONFIG_QCOM_COMMAND_DB) += cmd-db.o

7
drivers/soc/qcom/qcom_aoss.c
View File

@ -14,6 +14,9 @@
#include <linux/slab.h>
#include <linux/soc/qcom/qcom_aoss.h>
#define CREATE_TRACE_POINTS
#include "trace-aoss.h"
#define QMP_DESC_MAGIC 0x0
#define QMP_DESC_VERSION 0x4
#define QMP_DESC_FEATURES 0x8
@ -240,6 +243,8 @@ int __printf(2, 3) qmp_send(struct qmp *qmp, const char *fmt, ...)
mutex_lock(&qmp->tx_lock);
trace_aoss_send(buf);
/* The message RAM only implements 32-bit accesses */
__iowrite32_copy(qmp->msgram + qmp->offset + sizeof(u32),
buf, sizeof(buf) / sizeof(u32));
@ -261,6 +266,8 @@ int __printf(2, 3) qmp_send(struct qmp *qmp, const char *fmt, ...)
ret = 0;
}
trace_aoss_send_done(buf, ret);
mutex_unlock(&qmp->tx_lock);
return ret;

48
drivers/soc/qcom/trace-aoss.h Normal file
View File

@ -0,0 +1,48 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM qcom_aoss
#if !defined(_TRACE_QCOM_AOSS_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_QCOM_AOSS_H
#include <linux/tracepoint.h>
TRACE_EVENT(aoss_send,
TP_PROTO(const char *msg),
TP_ARGS(msg),
TP_STRUCT__entry(
__string(msg, msg)
),
TP_fast_assign(
__assign_str(msg, msg);
),
TP_printk("%s", __get_str(msg))
);
TRACE_EVENT(aoss_send_done,
TP_PROTO(const char *msg, int ret),
TP_ARGS(msg, ret),
TP_STRUCT__entry(
__string(msg, msg)
__field(int, ret)
),
TP_fast_assign(
__assign_str(msg, msg);
__entry->ret = ret;
),
TP_printk("%s: %d", __get_str(msg), __entry->ret)
);
#endif /* _TRACE_QCOM_AOSS_H */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE trace-aoss
#include <trace/define_trace.h>