CONFIG_PROVE_RCU_DELAY: RCU debugging: preemptible RCU race provocation

General informations

The Linux kernel configuration item CONFIG_PROVE_RCU_DELAY:

• prompt: RCU debugging: preemptible RCU race provocation
• type: bool
• depends on: CONFIG_DEBUG_KERNEL && CONFIG_PREEMPT_RCU
• defined in lib/Kconfig.debug
• found in Linux kernels: 3.7–3.16

Help text

There is a class of races that involve an unlikely preemption of __rcu_read_unlock() just after ->rcu_read_lock_nesting has been set to INT_MIN. This feature inserts a delay at that point to increase the probability of these races.

Say Y to increase probability of preemption of __rcu_read_unlock().

Say N if you are unsure.

Hardware

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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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