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UPSTREAM: ANDROID: tracing: add power/gpu_frequency

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From Android 16 CDD:

  [7.1.4.6/H-1-4] MUST report a GPU Frequency tracepoint as specified by
  the format: power/gpu_frequency.

Bug: 457797217
Test: cat /sys/kernel/tracing/events/power/gpu_frequency/format
Change-Id: Ie8cd95cb8fe8471c2de19c48cdf57c8cf59f2370
Signed-off-by: Chia-I Wu <olv@google.com>
Signed-off-by: Sorayukii <sorayukii69@gmail.com>
This commit is contained in:
Chia-I Wu 2025-11-04 11:43:07 -08:00 • committed by Sorayukii
commit b24d8263d0
5 changed files with 59 additions and 2 deletions
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3
drivers/gpu/Makefile
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@ -2,7 +2,6 @@
# taken to initialize them in the correct order. Link order is the only way
# to ensure this currently.
obj-$(CONFIG_TEGRA_HOST1X) += host1x/
obj-y += drm/ vga/
obj-y += drm/ vga/ trace/
obj-$(CONFIG_IMX_IPUV3_CORE) += ipu-v3/
obj-$(CONFIG_QCOM_KGSL) += msm/
obj-$(CONFIG_TRACE_GPU_MEM) += trace/

12
drivers/gpu/trace/Kconfig
View file

@ -11,3 +11,15 @@ config TRACE_GPU_MEM
Tracepoint availability varies by GPU driver.
If in doubt, say "N".
config TRACE_GPU_POWER
bool "Enable GPU power usage tracepoints"
default n
help
Choose this option to enable tracepoints for tracking
global and per-process GPU power usage. Intended for
performance profiling and required for Android.
Tracepoint availability varies by GPU driver.
If in doubt, say "N".

1
drivers/gpu/trace/Makefile
View file

@ -1,3 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_TRACE_GPU_MEM) += trace_gpu_mem.o
obj-$(CONFIG_TRACE_GPU_POWER) += trace_gpu_power.o

11
drivers/gpu/trace/trace_gpu_power.c Normal file
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@ -0,0 +1,11 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2025 Google LLC
*/
#include <linux/module.h>
#define CREATE_TRACE_POINTS
#include <trace/events/gpu_power.h>
EXPORT_TRACEPOINT_SYMBOL(gpu_frequency);

34
include/trace/events/gpu_power.h Normal file
View file

@ -0,0 +1,34 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM power // just "power" for historical reasons
#if !defined(_TRACE_GPU_POWER_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_GPU_POWER_H
#include <linux/tracepoint.h>
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=%u gpu_id=%u", __entry->state, __entry->gpu_id)
);
#endif /* _TRACE_GPU_POWER_H */
/* This part must be outside protection */
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE gpu_power
#include <trace/define_trace.h>