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-rw-r--r--init/Kconfig42
1 files changed, 35 insertions, 7 deletions
diff --git a/init/Kconfig b/init/Kconfig
index be8b7f55312d..7000d9657402 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -20,12 +20,8 @@ config CONSTRUCTORS
bool
depends on !UML
-config HAVE_IRQ_WORK
- bool
-
config IRQ_WORK
bool
- depends on HAVE_IRQ_WORK
config BUILDTIME_EXTABLE_SORT
bool
@@ -326,10 +322,13 @@ source "kernel/time/Kconfig"
menu "CPU/Task time and stats accounting"
+config VIRT_CPU_ACCOUNTING
+ bool
+
choice
prompt "Cputime accounting"
default TICK_CPU_ACCOUNTING if !PPC64
- default VIRT_CPU_ACCOUNTING if PPC64
+ default VIRT_CPU_ACCOUNTING_NATIVE if PPC64
# Kind of a stub config for the pure tick based cputime accounting
config TICK_CPU_ACCOUNTING
@@ -342,9 +341,10 @@ config TICK_CPU_ACCOUNTING
If unsure, say Y.
-config VIRT_CPU_ACCOUNTING
+config VIRT_CPU_ACCOUNTING_NATIVE
bool "Deterministic task and CPU time accounting"
depends on HAVE_VIRT_CPU_ACCOUNTING
+ select VIRT_CPU_ACCOUNTING
help
Select this option to enable more accurate task and CPU time
accounting. This is done by reading a CPU counter on each
@@ -354,6 +354,23 @@ config VIRT_CPU_ACCOUNTING
this also enables accounting of stolen time on logically-partitioned
systems.
+config VIRT_CPU_ACCOUNTING_GEN
+ bool "Full dynticks CPU time accounting"
+ depends on HAVE_CONTEXT_TRACKING && 64BIT
+ select VIRT_CPU_ACCOUNTING
+ select CONTEXT_TRACKING
+ help
+ Select this option to enable task and CPU time accounting on full
+ dynticks systems. This accounting is implemented by watching every
+ kernel-user boundaries using the context tracking subsystem.
+ The accounting is thus performed at the expense of some significant
+ overhead.
+
+ For now this is only useful if you are working on the full
+ dynticks subsystem development.
+
+ If unsure, say N.
+
config IRQ_TIME_ACCOUNTING
bool "Fine granularity task level IRQ time accounting"
depends on HAVE_IRQ_TIME_ACCOUNTING
@@ -453,7 +470,7 @@ config TREE_RCU
config TREE_PREEMPT_RCU
bool "Preemptible tree-based hierarchical RCU"
- depends on PREEMPT && SMP
+ depends on PREEMPT
help
This option selects the RCU implementation that is
designed for very large SMP systems with hundreds or
@@ -461,6 +478,8 @@ config TREE_PREEMPT_RCU
is also required. It also scales down nicely to
smaller systems.
+ Select this option if you are unsure.
+
config TINY_RCU
bool "UP-only small-memory-footprint RCU"
depends on !PREEMPT && !SMP
@@ -486,6 +505,14 @@ config PREEMPT_RCU
This option enables preemptible-RCU code that is common between
the TREE_PREEMPT_RCU and TINY_PREEMPT_RCU implementations.
+config RCU_STALL_COMMON
+ def_bool ( TREE_RCU || TREE_PREEMPT_RCU || RCU_TRACE )
+ help
+ This option enables RCU CPU stall code that is common between
+ the TINY and TREE variants of RCU. The purpose is to allow
+ the tiny variants to disable RCU CPU stall warnings, while
+ making these warnings mandatory for the tree variants.
+
config CONTEXT_TRACKING
bool
@@ -1263,6 +1290,7 @@ config HOTPLUG
config PRINTK
default y
bool "Enable support for printk" if EXPERT
+ select IRQ_WORK
help
This option enables normal printk support. Removing it
eliminates most of the message strings from the kernel image