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Commit 18d7ac77 authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
Browse files

Merge "defconfig: Enable QCOM_RUN_QUEUE_STATS"

parents 69ec31a0 228be369

arch/arm64/configs/vendor/lahaina_QGKI.config

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@@ -20,6 +20,7 @@ CONFIG_REGMAP_QTI_DEBUG=y 
CONFIG_REGMAP_ALLOW_WRITE_DEBUGFS=y

CONFIG_VM_EVENT_COUNTERS=y

CONFIG_QCOM_SOC_SLEEP_STATS=y

CONFIG_QCOM_RUN_QUEUE_STATS=y

CONFIG_QTI_RPM_STATS_LOG=y

CONFIG_QTI_DDR_STATS_LOG=y

CONFIG_ARM_QCOM_LPM_CPUIDLE=y

drivers/soc/qcom/Kconfig

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@@ -282,6 +282,14 @@ config QCOM_RPMHPD 
	  value to RPMh which then translates it into corresponding voltage

	  for the voltage rail.



config QCOM_RUN_QUEUE_STATS

       bool "Enable collection and exporting of QTI Run Queue stats to userspace"

       help

        This option enables the driver to periodically collecting the statistics

        of kernel run queue information and calculate the load of the system.

        This information is exported to usespace via sysfs entries and userspace

        algorithms uses info and decide when to turn on/off the cpu cores.



config QCOM_RPMPD

	bool "Qualcomm RPM Power domain driver"

	depends on QCOM_SMD_RPM=y

drivers/soc/qcom/Makefile

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@@ -33,6 +33,7 @@ obj-$(CONFIG_QCOM_SECURE_BUFFER) += secure_buffer.o 
obj-$(CONFIG_QCOM_SOCINFO)	+= socinfo.o

obj-$(CONFIG_QCOM_WCNSS_CTRL) += wcnss_ctrl.o

obj-$(CONFIG_QCOM_IPCC) += qcom_ipcc.o

obj-$(CONFIG_QCOM_RUN_QUEUE_STATS) += rq_stats.o

obj-$(CONFIG_QCOM_APR) += apr.o

obj-$(CONFIG_QCOM_LLCC) += llcc-slice.o

obj-$(CONFIG_QCOM_LAHAINA_LLCC) += llcc-lahaina.o

drivers/soc/qcom/rq_stats.c

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// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2010-2015, 2017, 2019, The Linux Foundation. All rights reserved.

 */



#include <linux/init.h>

#include <linux/cpu.h>

#include <linux/kobject.h>

#include <linux/sysfs.h>

#include <linux/rq_stats.h>



#define MAX_LONG_SIZE 24

#define DEFAULT_DEF_TIMER_JIFFIES 5



struct rq_data rq_info;

struct workqueue_struct *rq_wq;

spinlock_t rq_lock;



static void def_work_fn(struct work_struct *work)

{

	/* Notify polling threads on change of value */

	sysfs_notify(rq_info.kobj, NULL, "def_timer_ms");

}



static ssize_t show_def_timer_ms(struct kobject *kobj,

		struct kobj_attribute *attr, char *buf)

{

	int64_t diff;

	unsigned int udiff;



	diff = ktime_to_ns(ktime_get()) - rq_info.def_start_time;

	do_div(diff, 1000 * 1000);

	udiff = (unsigned int) diff;



	return snprintf(buf, MAX_LONG_SIZE, "%u\n", udiff);

}



static ssize_t store_def_timer_ms(struct kobject *kobj,

		struct kobj_attribute *attr, const char *buf, size_t count)

{

	unsigned int val = 0;



	if (kstrtouint(buf, 0, &val))

		return -EINVAL;



	rq_info.def_timer_jiffies = msecs_to_jiffies(val);



	rq_info.def_start_time = ktime_to_ns(ktime_get());

	return count;

}



static struct kobj_attribute def_timer_ms_attr =

	__ATTR(def_timer_ms, 0600, show_def_timer_ms,

			store_def_timer_ms);



static struct attribute *rq_attrs[] = {

	&def_timer_ms_attr.attr,

	NULL,

};



static struct attribute_group rq_attr_group = {

	.attrs = rq_attrs,

};



static int init_rq_attribs(void)

{

	int err;



	rq_info.attr_group = &rq_attr_group;



	/* Create /sys/devices/system/cpu/cpu0/rq-stats/... */

	rq_info.kobj = kobject_create_and_add("rq-stats",

			&get_cpu_device(0)->kobj);

	if (!rq_info.kobj)

		return -ENOMEM;



	err = sysfs_create_group(rq_info.kobj, rq_info.attr_group);

	if (err)

		kobject_put(rq_info.kobj);

	else

		kobject_uevent(rq_info.kobj, KOBJ_ADD);



	return err;

}



static int __init msm_rq_stats_init(void)

{

	int ret;



#ifndef CONFIG_SMP

	/* Bail out if this is not an SMP Target */

	rq_info.init = 0;

	return -EPERM;

#endif



	rq_wq = create_singlethread_workqueue("rq_stats");

	WARN_ON(!rq_wq);

	INIT_WORK(&rq_info.def_timer_work, def_work_fn);

	spin_lock_init(&rq_lock);

	rq_info.def_timer_jiffies = DEFAULT_DEF_TIMER_JIFFIES;

	rq_info.def_timer_last_jiffy = 0;

	ret = init_rq_attribs();



	rq_info.init = 1;



	return ret;

}

late_initcall(msm_rq_stats_init);

include/linux/rq_stats.h

0 → 100644
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/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2011,2013-2014,2019, The Linux Foundation. All rights reserved.

 */



#ifdef CONFIG_QCOM_RUN_QUEUE_STATS



struct rq_data {

	unsigned long def_timer_jiffies;

	unsigned long def_timer_last_jiffy;

	int64_t def_start_time;

	struct attribute_group *attr_group;

	struct kobject *kobj;

	struct work_struct def_timer_work;

	int init;

};



extern struct rq_data rq_info;

extern struct workqueue_struct *rq_wq;

extern spinlock_t rq_lock;



#endif