bridge: Correctly encode addresses when dumping mdb entries

[firefly-linux-kernel-4.4.55.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index ec62139207d3cf5930a23d4f0642309864291a7c..2054e048bb9844700346db4912cd33f7c92cca3d 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -486,9 +486,13 @@ config PREEMPT_RCU
          This option enables preemptible-RCU code that is common between
          the TREE_PREEMPT_RCU and TINY_PREEMPT_RCU implementations.
 
+config CONTEXT_TRACKING
+       bool
+
 config RCU_USER_QS
        bool "Consider userspace as in RCU extended quiescent state"
-       depends on HAVE_RCU_USER_QS && SMP
+       depends on HAVE_CONTEXT_TRACKING && SMP
+       select CONTEXT_TRACKING
        help
          This option sets hooks on kernel / userspace boundaries and
          puts RCU in extended quiescent state when the CPU runs in
@@ -497,24 +501,20 @@ config RCU_USER_QS
          try to keep the timer tick on for RCU.
 
          Unless you want to hack and help the development of the full
-         tickless feature, you shouldn't enable this option.  It also
+         dynticks mode, you shouldn't enable this option.  It also
          adds unnecessary overhead.
 
          If unsure say N
 
-config RCU_USER_QS_FORCE
-       bool "Force userspace extended QS by default"
-       depends on RCU_USER_QS
+config CONTEXT_TRACKING_FORCE
+       bool "Force context tracking"
+       depends on CONTEXT_TRACKING
        help
-         Set the hooks in user/kernel boundaries by default in order to
-         test this feature that treats userspace as an extended quiescent
-         state until we have a real user like a full adaptive nohz option.
-
-         Unless you want to hack and help the development of the full
-         tickless feature, you shouldn't enable this option. It adds
-         unnecessary overhead.
-
-         If unsure say N
+         Probe on user/kernel boundaries by default in order to
+         test the features that rely on it such as userspace RCU extended
+         quiescent states.
+         This test is there for debugging until we have a real user like the
+         full dynticks mode.
 
 config RCU_FANOUT
        int "Tree-based hierarchical RCU fanout value"
@@ -654,6 +654,28 @@ config RCU_BOOST_DELAY
 
          Accept the default if unsure.
 
+config RCU_NOCB_CPU
+       bool "Offload RCU callback processing from boot-selected CPUs"
+       depends on TREE_RCU || TREE_PREEMPT_RCU
+       default n
+       help
+         Use this option to reduce OS jitter for aggressive HPC or
+         real-time workloads.  It can also be used to offload RCU
+         callback invocation to energy-efficient CPUs in battery-powered
+         asymmetric multiprocessors.
+
+         This option offloads callback invocation from the set of
+         CPUs specified at boot time by the rcu_nocbs parameter.
+         For each such CPU, a kthread ("rcuoN") will be created to
+         invoke callbacks, where the "N" is the CPU being offloaded.
+         Nothing prevents this kthread from running on the specified
+         CPUs, but (1) the kthreads may be preempted between each
+         callback, and (2) affinity or cgroups can be used to force
+         the kthreads to run on whatever set of CPUs is desired.
+
+         Say Y here if you want reduced OS jitter on selected CPUs.
+         Say N here if you are unsure.
+
 endmenu # "RCU Subsystem"
 
 config IKCONFIG