Merge "devfreq: Add support to configure bus dcvs sampling interval" (857969df) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/devfreq/governor_gpubw_mon.c

+69 −5

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (c) 2014-2019, The Linux Foundation. All rights reserved.
		* Copyright (c) 2014-2020, The Linux Foundation. All rights reserved.
		*/

		#include <linux/devfreq.h>
		@@ -45,6 +45,61 @@ static inline int devfreq_get_freq_level(struct devfreq *devfreq,
		return -EINVAL;
		}

		static ssize_t cur_ab_show(struct device *dev,
		struct device_attribute *attr,
		char *buf)
		{
		struct devfreq *df = to_devfreq(dev);
		struct msm_busmon_extended_profile *bus_profile = container_of(
		(df->profile),
		struct msm_busmon_extended_profile,
		profile);

		return scnprintf(buf, PAGE_SIZE, "%llu\n", bus_profile->ab_mbytes);
		}

		static ssize_t sampling_interval_show(struct device *dev,
		struct device_attribute attr, char buf)
		{
		struct devfreq *df = to_devfreq(dev);
		struct msm_busmon_extended_profile *bus_profile = container_of(
		(df->profile),
		struct msm_busmon_extended_profile,
		profile);

		return scnprintf(buf, PAGE_SIZE, "%d\n", bus_profile->sampling_ms);
		}

		static ssize_t sampling_interval_store(struct device *dev,
		struct device_attribute *attr,
		const char *buf, size_t count)
		{
		struct devfreq *df = to_devfreq(dev);
		struct msm_busmon_extended_profile *bus_profile = container_of(
		(df->profile),
		struct msm_busmon_extended_profile,
		profile);
		u32 value;
		int ret;

		ret = kstrtou32(buf, 0, &value);
		if (ret)
		return ret;

		bus_profile->sampling_ms = value;

		return count;
		}

		static DEVICE_ATTR_RW(sampling_interval);
		static DEVICE_ATTR_RO(cur_ab);

		static const struct device_attribute *gpubw_attr_list[] = {
		&dev_attr_sampling_interval,
		&dev_attr_cur_ab,
		NULL
		};

		static int devfreq_gpubw_get_target(struct devfreq *df,
		unsigned long *freq)
		{
		@@ -87,7 +142,7 @@ static int devfreq_gpubw_get_target(struct devfreq *df,

		level = devfreq_get_freq_level(df, stats->current_frequency);

		if (priv->bus.total_time < LONG_FLOOR)
		if (priv->bus.total_time < bus_profile->sampling_ms)
		return result;

		norm_max_cycles = (unsigned int)(priv->bus.ram_time) /
		@@ -187,12 +242,21 @@ static int gpubw_start(struct devfreq *devfreq)
		priv->bus.p_up[priv->bus.num - 1] = 100;
		_update_cutoff(priv, priv->bus.max);

		bus_profile->sampling_ms = LONG_FLOOR;

		for (i = 0; gpubw_attr_list[i] != NULL; i++)
		device_create_file(&devfreq->dev, gpubw_attr_list[i]);

		return 0;
		}

		static int gpubw_stop(struct devfreq *devfreq)
		{
		struct devfreq_msm_adreno_tz_data *priv = devfreq->data;
		int i;

		for (i = 0; gpubw_attr_list[i] != NULL; i++)
		device_remove_file(&devfreq->dev, gpubw_attr_list[i]);

		if (priv) {
		kfree(priv->bus.up);

include/linux/msm_adreno_devfreq.h

+2 −1

Original line number	Diff line number	Diff line
		/* SPDX-License-Identifier: GPL-2.0 */
		/*
		* Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
		* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
		*/

		#ifndef MSM_ADRENO_DEVFREQ_H
		@@ -77,6 +77,7 @@ struct msm_adreno_extended_profile {

		struct msm_busmon_extended_profile {
		u32 flag;
		u32 sampling_ms;
		unsigned long percent_ab;
		unsigned long ab_mbytes;
		struct devfreq_msm_adreno_tz_data *private_data;