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drivers: retained_mem: Add optional mutex disablement

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Adds an optional Kconfig to disable use of mutexes in the retained
memory driver.

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>
This commit is contained in:
Jamie McCrae 2023-04-06 12:12:52 +01:00 committed by Carles Cufí
parent 96a9b7e1ff
commit 0bf39f4a94
3 changed files with 21 additions and 12 deletions
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9
drivers/retained_mem/Kconfig
View file

@ -15,6 +15,15 @@ config RETAINED_MEM_INIT_PRIORITY
help
Retained memory devices initialization priority,
config RETAINED_MEM_MUTEXES
int "Retained memory mutex support"
default y
depends on MULTITHREADING
help
Use mutexes to prevent issues with concurrent retained memory access.
Should only be disabled whereby retained memory access is required
in an ISR or for special use cases.
module = RETAINED_MEM
module-str = retained_mem
source "subsys/logging/Kconfig.template.log_config"

12
drivers/retained_mem/retained_mem_nrf_gpregret.c
View file

@ -16,7 +16,7 @@
LOG_MODULE_REGISTER(retained_mem_nrf_gpregret, CONFIG_RETAINED_MEM_LOG_LEVEL);
#ifdef CONFIG_MULTITHREADING
#ifdef CONFIG_RETAINED_MEM_MUTEXES
struct nrf_gpregret_data {
struct k_mutex lock;
};
@ -29,7 +29,7 @@ struct nrf_gpregret_config {
static inline void nrf_gpregret_lock_take(const struct device *dev)
{
#ifdef CONFIG_MULTITHREADING
#ifdef CONFIG_RETAINED_MEM_MUTEXES
struct nrf_gpregret_data *data = dev->data;
k_mutex_lock(&data->lock, K_FOREVER);
@ -40,7 +40,7 @@ static inline void nrf_gpregret_lock_take(const struct device *dev)
static inline void nrf_gpregret_lock_release(const struct device *dev)
{
#ifdef CONFIG_MULTITHREADING
#ifdef CONFIG_RETAINED_MEM_MUTEXES
struct nrf_gpregret_data *data = dev->data;
k_mutex_unlock(&data->lock);
@ -51,7 +51,7 @@ static inline void nrf_gpregret_lock_release(const struct device *dev)
static int nrf_gpregret_init(const struct device *dev)
{
#ifdef CONFIG_MULTITHREADING
#ifdef CONFIG_RETAINED_MEM_MUTEXES
struct nrf_gpregret_data *data = dev->data;
k_mutex_init(&data->lock);
@ -115,7 +115,7 @@ static const struct retained_mem_driver_api nrf_gpregret_api = {
};
#define NRF_GPREGRET_DEVICE(inst) \
IF_ENABLED(CONFIG_MULTITHREADING, \
IF_ENABLED(CONFIG_RETAINED_MEM_MUTEXES, \
(static struct nrf_gpregret_data nrf_gpregret_data_##inst;) \
) \
static const struct nrf_gpregret_config nrf_gpregret_config_##inst = { \
@ -125,7 +125,7 @@ static const struct retained_mem_driver_api nrf_gpregret_api = {
DEVICE_DT_INST_DEFINE(inst, \
&nrf_gpregret_init, \
NULL, \
COND_CODE_1(CONFIG_MULTITHREADING, \
COND_CODE_1(CONFIG_RETAINED_MEM_MUTEXES, \
(&nrf_gpregret_data_##inst), (NULL) \
), \
&nrf_gpregret_config_##inst, \

12
drivers/retained_mem/retained_mem_zephyr_ram.c
View file

@ -16,7 +16,7 @@
LOG_MODULE_REGISTER(retained_mem_zephyr_ram, CONFIG_RETAINED_MEM_LOG_LEVEL);
#ifdef CONFIG_MULTITHREADING
#ifdef CONFIG_RETAINED_MEM_MUTEXES
struct zephyr_retained_mem_ram_data {
struct k_mutex lock;
};
@ -29,7 +29,7 @@ struct zephyr_retained_mem_ram_config {
static inline void zephyr_retained_mem_ram_lock_take(const struct device *dev)
{
#ifdef CONFIG_MULTITHREADING
#ifdef CONFIG_RETAINED_MEM_MUTEXES
struct zephyr_retained_mem_ram_data *data = dev->data;
k_mutex_lock(&data->lock, K_FOREVER);
@ -40,7 +40,7 @@ static inline void zephyr_retained_mem_ram_lock_take(const struct device *dev)
static inline void zephyr_retained_mem_ram_lock_release(const struct device *dev)
{
#ifdef CONFIG_MULTITHREADING
#ifdef CONFIG_RETAINED_MEM_MUTEXES
struct zephyr_retained_mem_ram_data *data = dev->data;
k_mutex_unlock(&data->lock);
@ -51,7 +51,7 @@ static inline void zephyr_retained_mem_ram_lock_release(const struct device *dev
static int zephyr_retained_mem_ram_init(const struct device *dev)
{
#ifdef CONFIG_MULTITHREADING
#ifdef CONFIG_RETAINED_MEM_MUTEXES
struct zephyr_retained_mem_ram_data *data = dev->data;
k_mutex_init(&data->lock);
@ -116,7 +116,7 @@ static const struct retained_mem_driver_api zephyr_retained_mem_ram_api = {
};
#define ZEPHYR_RETAINED_MEM_RAM_DEVICE(inst) \
IF_ENABLED(CONFIG_MULTITHREADING, \
IF_ENABLED(CONFIG_RETAINED_MEM_MUTEXES, \
(static struct zephyr_retained_mem_ram_data \
zephyr_retained_mem_ram_data_##inst;) \
) \
@ -128,7 +128,7 @@ static const struct retained_mem_driver_api zephyr_retained_mem_ram_api = {
DEVICE_DT_INST_DEFINE(inst, \
&zephyr_retained_mem_ram_init, \
NULL, \
COND_CODE_1(CONFIG_MULTITHREADING, \
COND_CODE_1(CONFIG_RETAINED_MEM_MUTEXES, \
(&zephyr_retained_mem_ram_data_##inst), (NULL) \
), \
&zephyr_retained_mem_ram_config_##inst, \