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linux-7.2.3/drivers/gpu/trace/Kconfig

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+# SPDX-License-Identifier: GPL-2.0-only
+
+config TRACE_GPU_MEM
+	bool "Enable GPU memory usage tracepoints"
+	default n
+	help
+	  Choose this option to enable tracepoints for tracking
+	  global and per-process GPU memory usage. Intended for
+	  performance profiling and required for Android.
+
+	  Tracepoint availability varies by GPU driver.
+
+	  If in doubt, say "N".

linux-7.2.3/drivers/gpu/trace/Makefile

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+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_TRACE_GPU_MEM) += trace_gpu_mem.o

linux-7.2.3/drivers/gpu/trace/trace_gpu_mem.c

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+// SPDX-License-Identifier: GPL-2.0
+/*
+ * GPU memory trace points
+ *
+ * Copyright (C) 2020 Google, Inc.
+ */
+
+#include <linux/module.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/gpu_mem.h>
+
+EXPORT_TRACEPOINT_SYMBOL(gpu_mem_total);