diff options
Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index b9d11a899b88..0eda68f0ad54 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -363,6 +363,7 @@ config CGROUP_CPUACCT config SYSFS_DEPRECATED bool "Create deprecated sysfs files" + depends on SYSFS default y help This option creates deprecated symlinks such as the @@ -762,3 +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 |
