default or selected kernelversion does not have config value CONFIG_PREEMPT_RCU.
Result is shown for kernelversion 5.3.7
Preemptible RCU
modulename: rcupreempt.ko
configname: CONFIG_PREEMPT_RCU
Linux Kernel Configuration
└─>Preemptible RCU
In linux kernel since version 2.6.25 (release Date: 2008-04-16)
This option reduces the latency of the kernel by making certain
RCU sections preemptible. Normally RCU code is non-preemptible, if
this option is selected then read-only RCU sections become
preemptible. This helps latency, but may expose bugs due to
now-naive assumptions about each RCU read-side critical section
remaining on a given CPU through its execution.
Say N if you are unsure.
RCU sections preemptible. Normally RCU code is non-preemptible, if
this option is selected then read-only RCU sections become
preemptible. This helps latency, but may expose bugs due to
now-naive assumptions about each RCU read-side critical section
remaining on a given CPU through its execution.
Say N if you are unsure.