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Commit c7d4665b authored by Venkata Rao Kakani's avatar Venkata Rao Kakani
Browse files

boot markers: Add boot marker for lpm wake up time 



Add boot markers to measure the wake time from vdd_min till
apps wake up.

Change-Id: I943b41cb5fd5356b6204347b2735a5ce3d26f695
Signed-off-by: default avatarVenkata Rao Kakani <vkakani@codeaurora.org>
parent db9f2137

drivers/soc/qcom/boot_marker.c

+53 −0
Original line number Diff line number Diff line
@@ -26,10 +26,12 @@ 
#include <linux/types.h>

#include <linux/mutex.h>

#include <linux/mm.h>

#include <asm/arch_timer.h>

#include <soc/qcom/boot_stats.h>



#define MAX_STRING_LEN 256

#define BOOT_MARKER_MAX_LEN 40

#define MSM_ARCH_TIMER_FREQ     19200000



struct boot_marker {

	char marker_name[BOOT_MARKER_MAX_LEN];
@@ -41,6 +43,23 @@ struct boot_marker { 
static struct dentry *dent_bkpi, *dent_bkpi_status, *dent_mpm_timer;

static struct boot_marker boot_marker_list;



static void _destroy_boot_marker(const char *name)

{

	struct boot_marker *marker;

	struct boot_marker *temp_addr;



	mutex_lock(&boot_marker_list.lock);

	list_for_each_entry_safe(marker, temp_addr, &boot_marker_list.list,

			list) {

		if (strnstr(marker->marker_name, name,

			 strlen(marker->marker_name))) {

			list_del(&marker->list);

			kfree(marker);

		}

	}

	mutex_unlock(&boot_marker_list.lock);

}



static void _create_boot_marker(const char *name,

		unsigned long long int timer_value)

{
@@ -78,6 +97,40 @@ void place_marker(const char *name) 
}

EXPORT_SYMBOL(place_marker);



void destroy_marker(const char *name)

{

	_destroy_boot_marker((char *) name);

}

EXPORT_SYMBOL(destroy_marker);



static inline u64 get_time_in_msec(u64 counter)

{

	counter *= MSEC_PER_SEC;

	do_div(counter, MSM_ARCH_TIMER_FREQ);

	return counter;

}



void measure_wake_up_time(void)

{

	u64 wake_up_time, deep_sleep_exit_time, current_time;

	char wakeup_marker[50] = {0,};



	current_time = arch_counter_get_cntvct();

	deep_sleep_exit_time = get_sleep_exit_time();

	if (deep_sleep_exit_time) {

		wake_up_time = current_time - deep_sleep_exit_time;

		wake_up_time = get_time_in_msec(wake_up_time);

		pr_debug("Current= %llu, wakeup=%llu, kpi=%llu msec\n",

			current_time, deep_sleep_exit_time, wake_up_time);

		snprintf(wakeup_marker, sizeof(wakeup_marker),

				"M - STR Wakeup : %llu ms", wake_up_time);

		destroy_marker("M - STR Wakeup");

		place_marker(wakeup_marker);

	} else

		destroy_marker("M - STR Wakeup");

}

EXPORT_SYMBOL(measure_wake_up_time);



static ssize_t bootkpi_reader(struct file *fp, char __user *user_buffer,

		size_t count, loff_t *position)

{

drivers/soc/qcom/rpm_stats.c

+49 −3
Original line number Diff line number Diff line 
/* Copyright (c) 2011-2018, The Linux Foundation. All rights reserved.

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

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -12,7 +12,7 @@ 
 */



#define pr_fmt(fmt) "%s: " fmt, __func__



#include <linux/string.h>

#include <linux/init.h>

#include <linux/io.h>

#include <linux/kernel.h>
@@ -22,7 +22,7 @@ 
#include <linux/of.h>

#include <linux/uaccess.h>

#include <asm/arch_timer.h>



#include <soc/qcom/boot_stats.h>

#define RPM_STATS_NUM_REC	2

#define MSM_ARCH_TIMER_FREQ	19200000
@@ -62,6 +62,8 @@ struct msm_rpm_stats_data { 
#endif



};

static struct msm_rpmstats_platform_data *gpdata;

static u64 deep_sleep_last_exited_time;



struct msm_rpmstats_kobj_attr {

	struct kobject *kobj;
@@ -91,6 +93,7 @@ static inline int msm_rpmstats_append_data_to_buf(char *buf, 
	u64 time_in_last_mode;

	u64 time_since_last_mode;

	u64 actual_last_sleep;

	static u32 saved_deep_sleep_count;



	stat_type[4] = 0;

	memcpy(stat_type, &data->stat_type, sizeof(u32));
@@ -101,6 +104,15 @@ static inline int msm_rpmstats_append_data_to_buf(char *buf, 
	time_since_last_mode = get_time_in_sec(time_since_last_mode);

	actual_last_sleep = get_time_in_msec(data->accumulated);



	if (!memcmp((const void *)stat_type, (const void *)"aosd", 4)) {

		if (saved_deep_sleep_count == data->count)

			deep_sleep_last_exited_time = 0;

		else {

			saved_deep_sleep_count = data->count;

			deep_sleep_last_exited_time = data->last_exited_at;

		}

	}



#if defined(CONFIG_MSM_RPM_SMD)

	return snprintf(buf, buflength,

		"RPM Mode:%s\n\t count:%d\ntime in last mode(msec):%llu\n"
@@ -173,6 +185,39 @@ static inline int msm_rpmstats_copy_stats( 


	return length;

}

static ssize_t msm_rpmstats_populate_stats(void)

{

	struct msm_rpmstats_private_data prvdata;



	if (!gpdata) {

		pr_err("ERROR could not get rpm data memory\n");

		return -ENOMEM;

	}

	prvdata.reg_base = ioremap_nocache(gpdata->phys_addr_base,

					gpdata->phys_size);

	if (!prvdata.reg_base) {

		pr_err("ERROR could not ioremap start=%pa, len=%u\n",

				gpdata->phys_addr_base, gpdata->phys_size);

		return -EBUSY;

	}

	prvdata.read_idx = prvdata.len = 0;

	prvdata.platform_data = gpdata;

	prvdata.num_records = gpdata->num_records;



	if (prvdata.read_idx < prvdata.num_records)

		prvdata.len = msm_rpmstats_copy_stats(&prvdata);

	iounmap(prvdata.reg_base);

	return prvdata.len;

}



uint64_t get_sleep_exit_time(void)

{

	if (msm_rpmstats_populate_stats() < 0)

		return 0;

	else

		return deep_sleep_last_exited_time;

}

EXPORT_SYMBOL(get_sleep_exit_time);



static ssize_t rpmstats_show(struct kobject *kobj,

			struct kobj_attribute *attr, char *buf)
@@ -278,6 +323,7 @@ static int msm_rpmstats_probe(struct platform_device *pdev) 
		pdata->num_records = RPM_STATS_NUM_REC;



	msm_rpmstats_create_sysfs(pdev, pdata);

	gpdata = pdata;



	return 0;

}

include/soc/qcom/boot_stats.h

+9 −0
Original line number Diff line number Diff line
@@ -44,7 +44,16 @@ static inline phys_addr_t msm_timer_get_pa(void) { return 0; } 
#ifdef CONFIG_MSM_BOOT_TIME_MARKER

static inline int boot_marker_enabled(void) { return 1; }

void place_marker(const char *name);

void destroy_marker(const char *name);

void measure_wake_up_time(void);

#else

static inline void place_marker(char *name) { };

static inline void destroy_marker(const char *name) { };

static inline int boot_marker_enabled(void) { return 0; }

static inline void measure_wake_up_time(void) { };

#endif

#ifdef CONFIG_QTI_RPM_STATS_LOG

uint64_t get_sleep_exit_time(void);

#else

static inline uint64_t get_sleep_exit_time(void) { return 0; }

#endif

kernel/power/suspend.c

+2 −1
Original line number Diff line number Diff line
@@ -33,8 +33,8 @@ 
#include <linux/compiler.h>

#include <linux/moduleparam.h>

#include <linux/wakeup_reason.h>



#include "power.h"

#include <soc/qcom/boot_stats.h>



const char * const pm_labels[] = {

	[PM_SUSPEND_TO_IDLE] = "freeze",
@@ -643,6 +643,7 @@ int pm_suspend(suspend_state_t state) 
	}

	pm_suspend_marker("exit");

	pr_info("suspend exit\n");

	measure_wake_up_time();

	return error;

}

EXPORT_SYMBOL(pm_suspend);