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Commit 96287e1d authored by Kalpak Kawadkar's avatar Kalpak Kawadkar
Browse files

clk: qcom: Enable ftrace for clock frequency measurement 



Enable ftrace support for clocks so that clients can measure
frequency of the clock through ftraces.

Change-Id: Ie923ac538b670598bb1be009e892a68c4f1e2a38
Signed-off-by: default avatarKalpak Kawadkar <quic_kkawadka@quicinc.com>
parent 0bfc6c85

drivers/clk/qcom/clk-debug.c

+6 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/* Copyright (c) 2016, 2019-2021 The Linux Foundation. All rights reserved. */

/* Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved. */



#include <linux/clk.h>

#include <linux/export.h>
@@ -11,6 +12,10 @@ 
#include <linux/bitops.h>

#include <linux/mfd/syscon.h>

#include <linux/msm-bus.h>

#include <trace/events/power.h>



#define CREATE_TRACE_POINTS

#include "trace.h"



#include "clk-regmap.h"

#include "clk-debug.h"
@@ -271,6 +276,7 @@ static int clk_debug_measure_get(void *data, u64 *val) 
	enable_debug_clks(measure);

	*val = clk_debug_mux_measure_rate(measure);



	trace_clk_measure(clk_hw_get_name(hw), *val);

	/* recursively calculate actual freq */

	*val *= get_mux_divs(measure);

	disable_debug_clks(measure);

drivers/clk/qcom/trace.h

0 → 100644
+51 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only

 *

 * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.

 */



#undef TRACE_SYSTEM

#define TRACE_SYSTEM clk_qcom



#if !defined(_TRACE_CLOCK_QCOM_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_CLOCK_QCOM



#include <linux/tracepoint.h>



DECLARE_EVENT_CLASS(clk_measure_support,



	TP_PROTO(const char *name, unsigned long rate),



	TP_ARGS(name, rate),



	TP_STRUCT__entry(

		__string(name, name)

		__field(unsigned long, rate)

	),



	TP_fast_assign(

		__assign_str(name, name);

		__entry->rate = rate;

	),



	TP_printk("%s rate: %lu",

		__get_str(name), (unsigned long)__entry->rate)

);



DEFINE_EVENT(clk_measure_support, clk_measure,



	TP_PROTO(const char *name, unsigned long rate),



	TP_ARGS(name, rate)

);



#endif /* _TRACE_CLOCK_QCOM */



/* This part must be outside protection */



#undef TRACE_INCLUDE_PATH

#define TRACE_INCLUDE_PATH .



#undef TRACE_INCLUDE_FILE

#define TRACE_INCLUDE_FILE trace



#include <trace/define_trace.h>