CONFIG_RCU_EQS_DEBUG: Provide debugging asserts for adding NO_HZ support to an arch

General informations

The Linux kernel configuration item CONFIG_RCU_EQS_DEBUG has multiple definitions:

Provide debugging asserts for adding NO_HZ support to an arch found in kernel/rcu/Kconfig.debug

The configuration item CONFIG_RCU_EQS_DEBUG:

• prompt: Provide debugging asserts for adding NO_HZ support to an arch
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in kernel/rcu/Kconfig.debug
• found in Linux kernels: 4.13–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD

Help text

This option provides consistency checks in RCU's handling of NO_HZ. These checks have proven quite helpful in detecting bugs in arch-specific NO_HZ code.

Say N here if you need ultimate kernel/user switch latencies Say Y if you are unsure

Provide debugging asserts for adding NO_HZ support to an arch found in lib/Kconfig.debug

The configuration item CONFIG_RCU_EQS_DEBUG:

• prompt: Provide debugging asserts for adding NO_HZ support to an arch
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in lib/Kconfig.debug
• found in Linux kernels: 4.3–4.12

Help text

This option provides consistency checks in RCU's handling of NO_HZ. These checks have proven quite helpful in detecting bugs in arch-specific NO_HZ code.

Say N here if you need ultimate kernel/user switch latencies Say Y if you are unsure

Use this when adding any sort of NO_HZ support to your arch found in lib/Kconfig.debug

The configuration item CONFIG_RCU_EQS_DEBUG:

• prompt: Use this when adding any sort of NO_HZ support to your arch
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in lib/Kconfig.debug
• found in Linux kernels: 4.2

Help text

This option provides consistency checks in RCU's handling of NO_HZ. These checks have proven quite helpful in detecting bugs in arch-specific NO_HZ code.

Say N here if you need ultimate kernel/user switch latencies Say Y if you are unsure

Hardware

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The data is retrived from:

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• Linux Kernel Driver DataBase (LKDDb)

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