Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

[linux-2.6-block.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index 643b221b1c0f908d11097761bf8c86bbc21eed3e..f5dbc6d4261bcb47e7d7dccfa6385f649ecefa0a 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -470,7 +470,6 @@ choice
 config TREE_RCU
        bool "Tree-based hierarchical RCU"
        depends on !PREEMPT && SMP
-       select IRQ_WORK
        help
          This option selects the RCU implementation that is
          designed for very large SMP system with hundreds or
@@ -480,7 +479,6 @@ config TREE_RCU
 config PREEMPT_RCU
        bool "Preemptible tree-based hierarchical RCU"
        depends on PREEMPT
-       select IRQ_WORK
        help
          This option selects the RCU implementation that is
          designed for very large SMP systems with hundreds or
@@ -501,9 +499,17 @@ config TINY_RCU
 
 endchoice
 
+config SRCU
+       bool
+       help
+         This option selects the sleepable version of RCU. This version
+         permits arbitrary sleeping or blocking within RCU read-side critical
+         sections.
+
 config TASKS_RCU
        bool "Task_based RCU implementation using voluntary context switch"
        default n
+       select SRCU
        help
          This option enables a task-based RCU implementation that uses
          only voluntary context switch (not preemption!), idle, and
@@ -668,9 +674,10 @@ config RCU_BOOST
 
 config RCU_KTHREAD_PRIO
        int "Real-time priority to use for RCU worker threads"
-       range 1 99
-       depends on RCU_BOOST
-       default 1
+       range 1 99 if RCU_BOOST
+       range 0 99 if !RCU_BOOST
+       default 1 if RCU_BOOST
+       default 0 if !RCU_BOOST
        help
          This option specifies the SCHED_FIFO priority value that will be
          assigned to the rcuc/n and rcub/n threads and is also the value
@@ -1280,27 +1287,11 @@ source "usr/Kconfig"
 
 endif
 
-config INIT_FALLBACK
-       bool "Fall back to defaults if init= parameter is bad"
-       default y
-       help
-         If enabled, the kernel will try the default init binaries if an
-         explicit request from the init= parameter fails.
-
-         This can have unexpected effects.  For example, booting
-         with init=/sbin/kiosk_app will run /sbin/init or even /bin/sh
-         if /sbin/kiosk_app cannot be executed.
-
-         The default value of Y is consistent with historical behavior.
-         Selecting N is likely to be more appropriate for most uses,
-         especially on kiosks and on kernels that are intended to be
-         run under the control of a script.
-
 config CC_OPTIMIZE_FOR_SIZE
        bool "Optimize for size"
        help
-         Enabling this option will pass "-Os" instead of "-O2" to gcc
-         resulting in a smaller kernel.
+         Enabling this option will pass "-Os" instead of "-O2" to
+         your compiler resulting in a smaller kernel.
 
          If unsure, say N.
 
@@ -1595,6 +1586,7 @@ config PERF_EVENTS
        depends on HAVE_PERF_EVENTS
        select ANON_INODES
        select IRQ_WORK
+       select SRCU
        help
          Enable kernel support for various performance events provided
          by software and hardware.