CONFIG_RCU_BOOST: Enable RCU priority boosting

General informations

The Linux kernel configuration item CONFIG_RCU_BOOST has multiple definitions:

Enable RCU priority boosting found in kernel/rcu/Kconfig

The configuration item CONFIG_RCU_BOOST:

• prompt: Enable RCU priority boosting
• type: bool
• depends on: (( CONFIG_RT_MUTEXES && CONFIG_PREEMPT_RCU && CONFIG_RCU_EXPERT ) || CONFIG_PREEMPT_RT ) && ( CONFIG_PREEMPT_RT )
• defined in kernel/rcu/Kconfig
• found in Linux kernels: 4.13–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

This option boosts the priority of preempted RCU readers that block the current preemptible RCU grace period for too long. This option also prevents heavy loads from blocking RCU callback invocation.

Say Y here if you are working with real-time apps or heavy loads Say N here if you are unsure.

Enable RCU priority boosting found in init/Kconfig

The configuration item CONFIG_RCU_BOOST:

• prompt: Enable RCU priority boosting
• type: bool
• depends on: CONFIG_RT_MUTEXES && CONFIG_PREEMPT_RCU && CONFIG_RCU_EXPERT
• defined in init/Kconfig
• found in Linux kernels: 2.6.38–2.6.39, 3.0–3.19, 4.0–4.12

Help text

This option boosts the priority of preempted RCU readers that block the current preemptible RCU grace period for too long. This option also prevents heavy loads from blocking RCU callback invocation for all flavors of RCU.

Say Y here if you are working with real-time apps or heavy loads Say N here if you are unsure.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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