:orphan:

.. title:: CONFIG_IDLE_STACK_SIZE

.. kconfig:: CONFIG_IDLE_STACK_SIZE

CONFIG_IDLE_STACK_SIZE
######################

*Size of stack for idle thread*

Type: ``int``

Help
====

.. code-block:: none

    Depending on the work that the idle task must do, most likely due to
    power management but possibly to other features like system event
    logging (e.g. logging when the system goes to sleep), the idle thread
    may need more stack space than the default value.

Defaults
========

- 4096
- 2048
- 2048
- 2048
- 2048
- 2048
- 2048
- 2048
- 2048
- 2048
- 1536
- 1536
- 2048
- 2048
- 2048
- 2048
- 2048
- 2048
- 2048
- 2048
- 2048
- 1536
- 1536
- 1024 if \ :kconfig:`64BIT <CONFIG_64BIT>`
- 4096
- 1024
- 4096
- 2048 if \ :kconfig:`COVERAGE_GCOV <CONFIG_COVERAGE_GCOV>`
- 1024 if \ :kconfig:`XTENSA <CONFIG_XTENSA>`
- 512 if \ :kconfig:`RISCV <CONFIG_RISCV>`
- 384 if \ :kconfig:`DYNAMIC_OBJECTS <CONFIG_DYNAMIC_OBJECTS>`
- 320 if \ :kconfig:`ARC <CONFIG_ARC>` || (\ :kconfig:`ARM <CONFIG_ARM>` && \ :kconfig:`CPU_HAS_FPU <CONFIG_CPU_HAS_FPU>`) || (\ :kconfig:`X86 <CONFIG_X86>` && \ :kconfig:`MMU <CONFIG_MMU>`)
- 256

Kconfig definitions
===================



At ``<Zephyr Boards>/arm/mps2_an385/Kconfig.defconfig:52``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:22``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 4096
    	depends on COVERAGE && BOARD_MPS2_AN385

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em4:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:14``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM4 && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em5d:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:15``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM5D && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em6:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:16``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM6 && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em7d:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:17``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM7D && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em9d:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:19``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM9D && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em11d:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:20``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM11D && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsk/Kconfig.defconfig.em7d:46``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/arc/snps_emsk/Kconfig.defconfig:10``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on ARC_MPU_VER = 2 && SOC_EMSK_EM7D && SOC_EMSK

----

At ``<Zephyr SoC>/arc/snps_nsim/Kconfig.defconfig.em:44``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/arc/snps_nsim/Kconfig.defconfig:12``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on ARC_MPU_VER = 2 && SOC_NSIM_EM && SOC_NSIM

----

At ``<Zephyr SoC>/arc/snps_nsim/Kconfig.defconfig.em7d_v22:41``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/arc/snps_nsim/Kconfig.defconfig:13``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on ARC_MPU_VER = 2 && SOC_NSIM_EM7D_V22 && SOC_NSIM

----

At ``<Zephyr SoC>/riscv/riscv-privilege/andes_v5/Kconfig.defconfig.ae350:15``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/riscv/riscv-privilege/Kconfig.defconfig:6`` → ``<Zephyr SoC>/riscv/riscv-privilege/andes_v5/Kconfig.defconfig.series:9``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 1536
    	depends on SOC_RISCV_ANDES_AE350 && SOC_SERIES_RISCV_ANDES_V5

----

At ``<Zephyr SoC>/riscv/riscv-privilege/telink_b91/Kconfig.defconfig.series:42``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:25`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1`` → ``<Zephyr SoC>/riscv/riscv-privilege/Kconfig.defconfig:6``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 1536
    	depends on SOC_SERIES_RISCV_TELINK_B91

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em4:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:14``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM4 && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em5d:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:15``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM5D && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em6:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:16``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM6 && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em7d:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:17``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM7D && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em9d:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:19``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM9D && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig.em11d:33``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/arc/snps_emsdp/Kconfig.defconfig:20``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on SOC_EMSDP_EM11D && SOC_ARC_EMSDP

----

At ``<Zephyr SoC>/arc/snps_emsk/Kconfig.defconfig.em7d:46``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/arc/snps_emsk/Kconfig.defconfig:10``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on ARC_MPU_VER = 2 && SOC_EMSK_EM7D && SOC_EMSK

----

At ``<Zephyr SoC>/arc/snps_nsim/Kconfig.defconfig.em:44``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/arc/snps_nsim/Kconfig.defconfig:12``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on ARC_MPU_VER = 2 && SOC_NSIM_EM && SOC_NSIM

----

At ``<Zephyr SoC>/arc/snps_nsim/Kconfig.defconfig.em7d_v22:41``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/arc/snps_nsim/Kconfig.defconfig:13``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 2048
    	depends on ARC_MPU_VER = 2 && SOC_NSIM_EM7D_V22 && SOC_NSIM

----

At ``<Zephyr SoC>/riscv/riscv-privilege/andes_v5/Kconfig.defconfig.ae350:15``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/riscv/riscv-privilege/Kconfig.defconfig:6`` → ``<Zephyr SoC>/riscv/riscv-privilege/andes_v5/Kconfig.defconfig.series:9``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 1536
    	depends on SOC_RISCV_ANDES_AE350 && SOC_SERIES_RISCV_ANDES_V5

----

At ``<Zephyr SoC>/riscv/riscv-privilege/telink_b91/Kconfig.defconfig.series:42``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:27`` → ``<Zephyr SoC>/riscv/riscv-privilege/Kconfig.defconfig:6``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 1536
    	depends on SOC_SERIES_RISCV_TELINK_B91

----

At ``<Zephyr Architecture>/arc/Kconfig:373``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12``

Menu path: (Top)

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 1024 if 64BIT

----

At ``<Zephyr Architecture>/arm64/core/Kconfig:57``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12`` → ``<Zephyr Architecture>/arm64/Kconfig:32``

Menu path: (Top) → ARM64 Options

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 4096
    	depends on ARM64

----

At ``<Zephyr Architecture>/sparc/Kconfig:41``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12``

Menu path: (Top) → SPARC Options

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 1024
    	depends on SPARC

----

At ``<Zephyr Architecture>/x86/core/Kconfig.intel64:11``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:39`` → ``<Zephyr Architecture>/Kconfig:12`` → ``<Zephyr Architecture>/x86/Kconfig:483``

Menu path: (Top) → X86 Architecture Options

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int
    	default 4096
    	depends on X86_64 && X86

----

At ``<Zephyr Kernel>/Kconfig:152``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:40``

Menu path: (Top) → General Kernel Options

.. code-block:: kconfig

    config IDLE_STACK_SIZE
    	int "Size of stack for idle thread"
    	default 2048 if COVERAGE_GCOV
    	default 1024 if XTENSA
    	default 512 if RISCV
    	default 384 if DYNAMIC_OBJECTS
    	default 320 if ARC || (ARM && CPU_HAS_FPU) || (X86 && MMU)
    	default 256
    	help
    	  Depending on the work that the idle task must do, most likely due to
    	  power management but possibly to other features like system event
    	  logging (e.g. logging when the system goes to sleep), the idle thread
    	  may need more stack space than the default value.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*