From 095031052b4c03a7c8ffa51cbab031e442c4f8b7 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 31 Jan 2008 22:45:22 +0100 Subject: RCU: add help text for "RCU implementation type" This patch supplies help text for the "RCU implementation type" kernel configuration choice. Reported-by: Stefan Richter Signed-off-by: Paul E. McKenney Signed-off-by: Ingo Molnar --- init/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'init') diff --git a/init/Kconfig b/init/Kconfig index 0d0bbf218f1f..dcc96a8c8c69 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -775,6 +775,14 @@ config PREEMPT_NOTIFIERS choice prompt "RCU implementation type:" default CLASSIC_RCU + help + This allows you to choose either the classic RCU implementation + that is designed for best read-side performance on non-realtime + systems, or the preemptible RCU implementation for best latency + on realtime systems. Note that some kernel preemption modes + will restrict your choice. + + Select the default if you are unsure. config CLASSIC_RCU bool "Classic RCU" -- cgit v1.2.3-58-ga151