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-rw-r--r--init/Kconfig143
1 files changed, 81 insertions, 62 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 01180da49add..22616cd434bc 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
@@ -33,35 +29,8 @@ config BUILDTIME_EXTABLE_SORT
menu "General setup"
config EXPERIMENTAL
- bool "Prompt for development and/or incomplete code/drivers"
- ---help---
- Some of the various things that Linux supports (such as network
- drivers, file systems, network protocols, etc.) can be in a state
- of development where the functionality, stability, or the level of
- testing is not yet high enough for general use. This is usually
- known as the "alpha-test" phase among developers. If a feature is
- currently in alpha-test, then the developers usually discourage
- uninformed widespread use of this feature by the general public to
- avoid "Why doesn't this work?" type mail messages. However, active
- testing and use of these systems is welcomed. Just be aware that it
- may not meet the normal level of reliability or it may fail to work
- in some special cases. Detailed bug reports from people familiar
- with the kernel internals are usually welcomed by the developers
- (before submitting bug reports, please read the documents
- <file:README>, <file:MAINTAINERS>, <file:REPORTING-BUGS>,
- <file:Documentation/BUG-HUNTING>, and
- <file:Documentation/oops-tracing.txt> in the kernel source).
-
- This option will also make obsoleted drivers available. These are
- drivers that have been replaced by something else, and/or are
- scheduled to be removed in a future kernel release.
-
- Unless you intend to help test and develop a feature or driver that
- falls into this category, or you have a situation that requires
- using these features, you should probably say N here, which will
- cause the configurator to present you with fewer choices. If
- you say Y here, you will be offered the choice of using features or
- drivers that are currently considered to be in the alpha-test phase.
+ bool
+ default y
config BROKEN
bool
@@ -247,7 +216,7 @@ config SYSVIPC_SYSCTL
config POSIX_MQUEUE
bool "POSIX Message Queues"
- depends on NET && EXPERIMENTAL
+ depends on NET
---help---
POSIX variant of message queues is a part of IPC. In POSIX message
queues every message has a priority which decides about succession
@@ -326,10 +295,13 @@ 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 +314,10 @@ 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 +327,23 @@ 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
@@ -393,7 +383,7 @@ config BSD_PROCESS_ACCT_V3
at <http://www.gnu.org/software/acct/>.
config TASKSTATS
- bool "Export task/process statistics through netlink (EXPERIMENTAL)"
+ bool "Export task/process statistics through netlink"
depends on NET
default n
help
@@ -406,7 +396,7 @@ config TASKSTATS
Say N if unsure.
config TASK_DELAY_ACCT
- bool "Enable per-task delay accounting (EXPERIMENTAL)"
+ bool "Enable per-task delay accounting"
depends on TASKSTATS
help
Collect information on time spent by a task waiting for system
@@ -417,7 +407,7 @@ config TASK_DELAY_ACCT
Say N if unsure.
config TASK_XACCT
- bool "Enable extended accounting over taskstats (EXPERIMENTAL)"
+ bool "Enable extended accounting over taskstats"
depends on TASKSTATS
help
Collect extended task accounting data and send the data
@@ -426,7 +416,7 @@ config TASK_XACCT
Say N if unsure.
config TASK_IO_ACCOUNTING
- bool "Enable per-task storage I/O accounting (EXPERIMENTAL)"
+ bool "Enable per-task storage I/O accounting"
depends on TASK_XACCT
help
Collect information on the number of bytes of storage I/O which this
@@ -453,7 +443,7 @@ 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 +451,8 @@ 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 +478,14 @@ 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
@@ -880,8 +880,8 @@ config MEMCG_SWAP_ENABLED
select this option (if, for some reason, they need to disable it
then swapaccount=0 does the trick).
config MEMCG_KMEM
- bool "Memory Resource Controller Kernel Memory accounting (EXPERIMENTAL)"
- depends on MEMCG && EXPERIMENTAL
+ bool "Memory Resource Controller Kernel Memory accounting"
+ depends on MEMCG
depends on SLUB || SLAB
help
The Kernel Memory extension for Memory Resource Controller can limit
@@ -893,7 +893,7 @@ config MEMCG_KMEM
config CGROUP_HUGETLB
bool "HugeTLB Resource Controller for Control Groups"
- depends on RESOURCE_COUNTERS && HUGETLB_PAGE && EXPERIMENTAL
+ depends on RESOURCE_COUNTERS && HUGETLB_PAGE
default n
help
Provides a cgroup Resource Controller for HugeTLB pages.
@@ -932,7 +932,6 @@ config FAIR_GROUP_SCHED
config CFS_BANDWIDTH
bool "CPU bandwidth provisioning for FAIR_GROUP_SCHED"
- depends on EXPERIMENTAL
depends on FAIR_GROUP_SCHED
default n
help
@@ -944,7 +943,6 @@ config CFS_BANDWIDTH
config RT_GROUP_SCHED
bool "Group scheduling for SCHED_RR/FIFO"
- depends on EXPERIMENTAL
depends on CGROUP_SCHED
default n
help
@@ -1026,8 +1024,7 @@ config IPC_NS
different IPC objects in different namespaces.
config USER_NS
- bool "User namespace (EXPERIMENTAL)"
- depends on EXPERIMENTAL
+ bool "User namespace"
depends on UIDGID_CONVERTED
select UIDGID_STRICT_TYPE_CHECKS
@@ -1035,6 +1032,13 @@ config USER_NS
help
This allows containers, i.e. vservers, to use user namespaces
to provide different user info for different servers.
+
+ When user namespaces are enabled in the kernel it is
+ recommended that the MEMCG and MEMCG_KMEM options also be
+ enabled and that user-space use the memory control groups to
+ limit the amount of memory a memory unprivileged users can
+ use.
+
If unsure, say N.
config PID_NS
@@ -1063,20 +1067,7 @@ config UIDGID_CONVERTED
bool
default y
- # Networking
- depends on NET_9P = n
-
# Filesystems
- depends on 9P_FS = n
- depends on AFS_FS = n
- depends on CEPH_FS = n
- depends on CIFS = n
- depends on CODA_FS = n
- depends on GFS2_FS = n
- depends on NCP_FS = n
- depends on NFSD = n
- depends on NFS_FS = n
- depends on OCFS2_FS = n
depends on XFS_FS = n
config UIDGID_STRICT_TYPE_CHECKS
@@ -1232,6 +1223,13 @@ config SYSCTL_EXCEPTION_TRACE
help
Enable support for /proc/sys/debug/exception-trace.
+config SYSCTL_ARCH_UNALIGN_NO_WARN
+ bool
+ help
+ Enable support for /proc/sys/kernel/ignore-unaligned-usertrap
+ Allows arch to define/use @no_unaligned_warning to possibly warn
+ about unaligned access emulation going on under the hood.
+
config SYSCTL_ARCH_UNALIGN_ALLOW
bool
help
@@ -1271,6 +1269,7 @@ 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
@@ -1616,7 +1615,7 @@ config MODULE_UNLOAD
config MODULE_FORCE_UNLOAD
bool "Forced module unloading"
- depends on MODULE_UNLOAD && EXPERIMENTAL
+ depends on MODULE_UNLOAD
help
This option allows you to force a module to unload, even if the
kernel believes it is unsafe: the kernel will remove the module
@@ -1673,6 +1672,17 @@ config MODULE_SIG_FORCE
Reject unsigned modules or signed modules for which we don't have a
key. Without this, such modules will simply taint the kernel.
+config MODULE_SIG_ALL
+ bool "Automatically sign all modules"
+ default y
+ depends on MODULE_SIG
+ help
+ Sign all modules during make modules_install. Without this option,
+ modules must be signed manually, using the scripts/sign-file tool.
+
+comment "Do not forget to sign required modules with scripts/sign-file"
+ depends on MODULE_SIG_FORCE && !MODULE_SIG_ALL
+
choice
prompt "Which hash algorithm should modules be signed with?"
depends on MODULE_SIG
@@ -1705,6 +1715,15 @@ config MODULE_SIG_SHA512
endchoice
+config MODULE_SIG_HASH
+ string
+ depends on MODULE_SIG
+ default "sha1" if MODULE_SIG_SHA1
+ default "sha224" if MODULE_SIG_SHA224
+ default "sha256" if MODULE_SIG_SHA256
+ default "sha384" if MODULE_SIG_SHA384
+ default "sha512" if MODULE_SIG_SHA512
+
endif # MODULES
config INIT_ALL_POSSIBLE