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CONFIG_RCU_STRICT_GRACE_PERIOD: Provide debug RCU implementation with short grace periods

General informations

The Linux kernel configuration item CONFIG_RCU_STRICT_GRACE_PERIOD:

Help text

Select this option to build an RCU variant that is strict about grace periods, making them as short as it can. This limits scalability, destroys real-time response, degrades battery lifetime and kills performance. Don't try this on large machines, as in systems with more than about 10 or 20 CPUs. But in conjunction with tools like KASAN, it can be helpful when looking for certain types of RCU usage bugs, for example, too-short RCU read-side critical sections.



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