diff options
Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index f5becd2a12f..0eda68f0ad5 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -763,3 +763,31 @@ source "block/Kconfig" config PREEMPT_NOTIFIERS bool + +choice + prompt "RCU implementation type:" + default CLASSIC_RCU + +config CLASSIC_RCU + bool "Classic RCU" + help + This option selects the classic RCU implementation that is + designed for best read-side performance on non-realtime + systems. + + Say Y if you are unsure. + +config PREEMPT_RCU + bool "Preemptible RCU" + depends on PREEMPT + help + 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. + +endchoice |