X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=init%2FKconfig;h=0eda68f0ad540778b7f071bd2f5493adaf29a484;hb=b6a175a562a1c8d326de0ee501114a2af2602772;hp=f5becd2a12f6eaf02ed9a3f8c866c5cdcfb4838f;hpb=7556afa0e0e436cad4f560ee83e5fbd5dac9359a;p=linux-2.6-omap-h63xx.git

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