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Commit 69fb9a27 authored by Deepak Kumar's avatar Deepak Kumar
Browse files

msm: kgsl: Add gpu_frequency tracepoint to power trace system 



Add a tracepoint to the power trace system to report GPU
frequency change. Format for this is identical to cpu_frequency
event and compatible with Android tools such as Perfetto.

Change-Id: I6207f45f506ab595bd261a297abdd8f40990c8de
Signed-off-by: default avatarDeepak Kumar <dkumar@codeaurora.org>
parent dd22fab7

drivers/gpu/msm/kgsl_pwrctrl.c

+4 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2010-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2010-2020, The Linux Foundation. All rights reserved.

 */



#include <linux/msm-bus.h>
@@ -15,6 +15,7 @@ 
#include "kgsl_device.h"

#include "kgsl_pwrscale.h"

#include "kgsl_trace.h"

#include "kgsl_trace_power.h"



#define KGSL_PWRFLAGS_POWER_ON 0

#define KGSL_PWRFLAGS_CLK_ON   1
@@ -616,6 +617,8 @@ void kgsl_pwrctrl_pwrlevel_change(struct kgsl_device *device, 
			pwr->previous_pwrlevel,

			pwr->pwrlevels[old_level].gpu_freq);



	trace_gpu_frequency(pwrlevel->gpu_freq/1000, 0);



	/*

	 * Some targets do not support the bandwidth requirement of

	 * GPU at TURBO, for such targets we need to set GPU-BIMC

drivers/gpu/msm/kgsl_trace.c

+4 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2011,2013,2015,2019 The Linux Foundation. All rights reserved.

 * Copyright (c) 2011,2013,2015,2019-2020 The Linux Foundation. All rights reserved.

 */



#include <linux/module.h>
@@ -10,8 +10,11 @@ 
/* Instantiate tracepoints */

#define CREATE_TRACE_POINTS

#include "kgsl_trace.h"

#include "kgsl_trace_power.h"



EXPORT_TRACEPOINT_SYMBOL(kgsl_regwrite);

EXPORT_TRACEPOINT_SYMBOL(kgsl_issueibcmds);

EXPORT_TRACEPOINT_SYMBOL(kgsl_user_pwrlevel_constraint);

EXPORT_TRACEPOINT_SYMBOL(kgsl_constraint);



EXPORT_TRACEPOINT_SYMBOL(gpu_frequency);

drivers/gpu/msm/kgsl_trace_power.h

0 → 100644
+41 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2020, The Linux Foundation. All rights reserved.

 */



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

#define _KGSL_TRACE_POWER_H



#undef TRACE_SYSTEM

#define TRACE_SYSTEM power

#undef TRACE_INCLUDE_FILE

#define TRACE_INCLUDE_FILE kgsl_trace_power



#include <linux/tracepoint.h>



/**

 * gpu_frequency - Reports frequency changes in GPU clock domains

 * @state:  New frequency (in KHz)

 * @gpu_id: GPU clock domain

 */

TRACE_EVENT(gpu_frequency,

	TP_PROTO(unsigned int state, unsigned int gpu_id),

	TP_ARGS(state, gpu_id),

	TP_STRUCT__entry(

		__field(unsigned int, state)

		__field(unsigned int, gpu_id)

	),

	TP_fast_assign(

		__entry->state = state;

		__entry->gpu_id = gpu_id;

	),



	TP_printk("state=%lu gpu_id=%lu",

		(unsigned long)__entry->state,

		(unsigned long)__entry->gpu_id)

);



#endif /* _KGSL_TRACE_POWER_H */



/* This part must be outside protection */

#include <trace/define_trace.h>