init/Kconfig: move RCU_NOCB_CPU dependencies to choice

Every choice item of the "Build-forced no-CBs CPUs" choice had a
dependency to RCU_NOCB_CPU.  It's more comprehensible if the choice
itself has the dependency instead of every choice item.  The choice
itself doesn't need to be visible if there are no items selectable
(i.e.  on arch/frv) or RCU_NOCB_CPU is not defined.

Signed-off-by: Stefan Hengelein <stefan.hengelein@fau.de>
Signed-off-by: Andreas Ruprecht <rupran@einserver.de>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/init/Kconfig b/init/Kconfig
index 3ee28ae..0c9546b 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -739,6 +739,7 @@ config RCU_NOCB_CPU
 choice
        prompt "Build-forced no-CBs CPUs"
        default RCU_NOCB_CPU_NONE
+       depends on RCU_NOCB_CPU
        help
          This option allows no-CBs CPUs (whose RCU callbacks are invoked
          from kthreads rather than from softirq context) to be specified
@@ -747,7 +748,6 @@ choice
 
 config RCU_NOCB_CPU_NONE
        bool "No build_forced no-CBs CPUs"
-       depends on RCU_NOCB_CPU
        help
          This option does not force any of the CPUs to be no-CBs CPUs.
          Only CPUs designated by the rcu_nocbs= boot parameter will be
@@ -761,7 +761,6 @@ config RCU_NOCB_CPU_NONE
 
 config RCU_NOCB_CPU_ZERO
        bool "CPU 0 is a build_forced no-CBs CPU"
-       depends on RCU_NOCB_CPU
        help
          This option forces CPU 0 to be a no-CBs CPU, so that its RCU
          callbacks are invoked by a per-CPU kthread whose name begins
@@ -776,7 +775,6 @@ config RCU_NOCB_CPU_ZERO
 
 config RCU_NOCB_CPU_ALL
        bool "All CPUs are build_forced no-CBs CPUs"
-       depends on RCU_NOCB_CPU
        help
          This option forces all CPUs to be no-CBs CPUs.  The rcu_nocbs=
          boot parameter will be ignored.  All CPUs' RCU callbacks will