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CONFIG_RCU_CPU_STALL_DETECTOR: Check for stalled CPUs delaying RCU grace periods

General informations

The Linux kernel configuration item CONFIG_RCU_CPU_STALL_DETECTOR:

• prompt: Check for stalled CPUs delaying RCU grace periods
• type: bool
• depends on: CONFIG_TREE_RCU || CONFIG_TREE_PREEMPT_RCU
• defined in lib/Kconfig.debug
• found in Linux kernels: 2.6.28–2.6.39

Help text

This option causes RCU to printk information on which CPUs are delaying the current grace period, but only when the grace period extends for excessive time periods.

Say N if you want to disable such checks.

Say Y if you are unsure.

Hardware

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