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qcom_stats: Add the function to get the subsystem status

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This change adds the function to get the subsystem status
from any other Module at any point of time.

Change-Id: Idb4b14d0d9d634ffb5badbeab422b8774f6e9491
Signed-off-by: Tarun Saxena <quic_tsaxena@quicinc.com>
This commit is contained in:
Tarun Saxena 2024-09-02 17:04:32 +05:30
parent e8fcda613b
commit 1881fbeab9
2 changed files with 73 additions and 5 deletions
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73
drivers/soc/qcom/qcom_stats.c
View file

@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2011-2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2022-2024, Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/cdev.h>
@ -93,6 +93,21 @@
#define DDR_STATS_IOCTL _IOR(SUBSYSTEM_STATS_MAGIC_NUM, 13, \
struct sleep_stats *)
enum subsystem_smem_id {
AOSD = 0,
CXSD = 1,
DDR = 2,
DDR_STATS = 3,
MPSS = 605,
ADSP,
CDSP,
SLPI,
GPU,
DISPLAY,
SLPI_ISLAND = 613,
APSS = 631,
};
struct subsystem_data {
const char *name;
u32 smem_item;
@ -179,11 +194,33 @@ static bool subsystem_stats_debug_on;
/* Subsystem stats before and after suspend */
static struct sleep_stats *b_subsystem_stats;
static struct sleep_stats *a_subsystem_stats;
static struct sleep_stats *c_subsystem_stats;
/* System sleep stats before and after suspend */
static struct sleep_stats *b_system_stats;
static struct sleep_stats *a_system_stats;
static DEFINE_MUTEX(sleep_stats_mutex);
static int subsystem_sleep_stats(struct sleep_stats *stats,
unsigned int pid, unsigned int idx, unsigned int index)
{
struct sleep_stats *subsystems_data;
if (pid == SUBSYSTEM_STATS_OTHERS_NUM)
memcpy_fromio(stats, drv->d[index].base, sizeof(*stats));
else {
subsystems_data = qcom_smem_get(pid, idx, NULL);
if (IS_ERR(subsystems_data))
return -ENODEV;
stats->count = subsystems_data->count;
stats->last_entered_at = subsystems_data->last_entered_at;
stats->last_exited_at = subsystems_data->last_exited_at;
stats->accumulated = subsystems_data->accumulated;
}
return 0;
}
static inline void get_sleep_stat_name(u32 type, char *stat_type)
{
int i;
@ -211,7 +248,7 @@ bool has_system_slept(void)
return sleep_flag;
}
EXPORT_SYMBOL(has_system_slept);
EXPORT_SYMBOL_GPL(has_system_slept);
bool has_subsystem_slept(void)
{
@ -232,13 +269,34 @@ bool has_subsystem_slept(void)
return sleep_flag;
}
EXPORT_SYMBOL(has_subsystem_slept);
EXPORT_SYMBOL_GPL(has_subsystem_slept);
bool current_subsystem_sleep(void)
{
int i, ret;
bool sleep_flag = true;
for (i = 0; i < ARRAY_SIZE(subsystems); i++) {
ret = subsystem_sleep_stats(c_subsystem_stats + i,
subsystems[i].pid, subsystems[i].smem_item, i);
if (ret != -ENODEV && subsystems[i].smem_item != APSS) {
if (c_subsystem_stats[i].last_exited_at >
c_subsystem_stats[i].last_entered_at) {
pr_warn("Subsystem %s not in sleep\n", subsystems[i].name);
sleep_flag = false;
break;
}
}
}
return sleep_flag;
}
EXPORT_SYMBOL_GPL(current_subsystem_sleep);
void subsystem_sleep_debug_enable(bool enable)
{
subsystem_stats_debug_on = enable;
}
EXPORT_SYMBOL(subsystem_sleep_debug_enable);
EXPORT_SYMBOL_GPL(subsystem_sleep_debug_enable);
static inline int qcom_stats_copy_to_user(unsigned long arg, struct sleep_stats *stats,
unsigned long size)
@ -1075,6 +1133,13 @@ static int qcom_stats_probe(struct platform_device *pdev)
goto fail;
}
c_subsystem_stats = devm_kcalloc(&pdev->dev, ARRAY_SIZE(subsystems),
sizeof(struct sleep_stats), GFP_KERNEL);
if (!c_subsystem_stats) {
ret = -ENOMEM;
goto fail;
}
b_system_stats = devm_kcalloc(&pdev->dev, drv->config->num_records,
sizeof(struct sleep_stats), GFP_KERNEL);
if (!b_system_stats) {

5
include/soc/qcom/qcom_stats.h
View file

@ -1,7 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
* Copyright (c) 2022-2024, Qualcomm Innovation Center, Inc. All rights reserved.
*/
#ifndef __QCOM_STATS_H__
@ -33,6 +33,7 @@ int ddr_stats_get_residency(int freq_count, struct ddr_freq_residency *data);
bool has_system_slept(void);
bool has_subsystem_slept(void);
bool current_subsystem_sleep(void);
void subsystem_sleep_debug_enable(bool enable);
int cx_stats_get_ss_vote_info(int ss_count,
@ -57,6 +58,8 @@ bool has_system_slept(void)
{ return false; }
bool has_subsystem_slept(void)
{ return false; }
bool current_subsystem_sleep(void)
{ return false; }
void subsystem_sleep_debug_enable(bool enable)
{ return; }