:orphan:

.. title:: ISR_STACK_SIZE

.. option:: CONFIG_ISR_STACK_SIZE

*ISR and initialization stack size (in bytes)*

Type: ``int``

Help
====

This option specifies the size of the stack used by interrupt
service routines (ISRs), and during kernel initialization.

Defaults
========

- 4096
- 4096
- 16384
- 2048

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

.. highlight:: kconfig

At ``arch/arm/core/aarch64/Kconfig:38``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:29`` → ``arch/Kconfig:12`` → ``arch/arm/Kconfig:46``

Menu path: (Top) → ARM Options

.. parsed-literal::

    config ISR_STACK_SIZE
    	int
    	default 4096
    	depends on \ :option:`ARM64 <CONFIG_ARM64>` && \ :option:`ARM <CONFIG_ARM>`

----

At ``arch/sparc/Kconfig:48``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:29`` → ``arch/Kconfig:12``

Menu path: (Top) → SPARC Options

.. parsed-literal::

    config ISR_STACK_SIZE
    	int
    	default 4096
    	depends on \ :option:`SPARC <CONFIG_SPARC>`

----

At ``arch/x86/core/Kconfig.intel64:14``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:29`` → ``arch/Kconfig:12`` → ``arch/x86/Kconfig:320``

Menu path: (Top) → X86 Architecture Options

.. parsed-literal::

    config ISR_STACK_SIZE
    	int
    	default 16384
    	depends on \ :option:`X86_64 <CONFIG_X86_64>` && \ :option:`X86 <CONFIG_X86>`

----

At ``kernel/Kconfig:177``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:30``

Menu path: (Top) → General Kernel Options

.. parsed-literal::

    config ISR_STACK_SIZE
    	int "ISR and initialization stack size (in bytes)"
    	default 2048
    	help
    	  This option specifies the size of the stack used by interrupt
    	  service routines (ISRs), and during kernel initialization.

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