s390/kconfig: split the s390 base menu

Split the base menu into more descriptive categories like processor,
memory, etc. and move virtualization related entries to the
Virtualization menu.
Also select KEXEC unconditionally.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 196 insertions, 191 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index a7088dc06d2c..16506b28cb72 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -55,6 +55,12 @@ config VIRT_CPU_ACCOUNTING
 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
         def_bool y
 
+config KEXEC
+        def_bool y
+
+config AUDIT_ARCH
+        def_bool y
+
 config S390
         def_bool y
         select USE_GENERIC_SMP_HELPERS if SMP
@@ -134,9 +140,79 @@ source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"
 
-menu "Base setup"
+menu "Processor type and features"
+
+config HAVE_MARCH_Z900_FEATURES
+        def_bool n
+
+config HAVE_MARCH_Z990_FEATURES
+        def_bool n
+        select HAVE_MARCH_Z900_FEATURES
+
+config HAVE_MARCH_Z9_109_FEATURES
+        def_bool n
+        select HAVE_MARCH_Z990_FEATURES
+
+config HAVE_MARCH_Z10_FEATURES
+        def_bool n
+        select HAVE_MARCH_Z9_109_FEATURES
+
+config HAVE_MARCH_Z196_FEATURES
+        def_bool n
+        select HAVE_MARCH_Z10_FEATURES
+
+choice
+        prompt "Processor type"
+        default MARCH_G5
+
+config MARCH_G5
+        bool "System/390 model G5 and G6"
+        depends on !64BIT
+        help
+          Select this to build a 31 bit kernel that works
+          on all ESA/390 and z/Architecture machines.
+
+config MARCH_Z900
+        bool "IBM zSeries model z800 and z900"
+        select HAVE_MARCH_Z900_FEATURES if 64BIT
+        help
+          Select this to enable optimizations for model z800/z900 (2064 and
+          2066 series). This will enable some optimizations that are not
+          available on older ESA/390 (31 Bit) only CPUs.
+
+config MARCH_Z990
+        bool "IBM zSeries model z890 and z990"
+        select HAVE_MARCH_Z990_FEATURES if 64BIT
+        help
+          Select this to enable optimizations for model z890/z990 (2084 and
+          2086 series). The kernel will be slightly faster but will not work
+          on older machines.
+
+config MARCH_Z9_109
+        bool "IBM System z9"
+        select HAVE_MARCH_Z9_109_FEATURES if 64BIT
+        help
+          Select this to enable optimizations for IBM System z9 (2094 and
+          2096 series). The kernel will be slightly faster but will not work
+          on older machines.
+
+config MARCH_Z10
+        bool "IBM System z10"
+        select HAVE_MARCH_Z10_FEATURES if 64BIT
+        help
+          Select this to enable optimizations for IBM System z10 (2097 and
+          2098 series). The kernel will be slightly faster but will not work
+          on older machines.
+
+config MARCH_Z196
+        bool "IBM zEnterprise 114 and 196"
+        select HAVE_MARCH_Z196_FEATURES if 64BIT
+        help
+          Select this to enable optimizations for IBM zEnterprise 114 and 196
+          (2818 and 2817 series). The kernel will be slightly faster but will
+          not work on older machines.
 
-comment "Processor type and features"
+endchoice
 
 config 64BIT
         def_bool y
@@ -148,6 +224,24 @@ config 64BIT
 config 32BIT
         def_bool y if !64BIT
 
+config COMPAT
+        def_bool y
+        prompt "Kernel support for 31 bit emulation"
+        depends on 64BIT
+        select COMPAT_BINFMT_ELF if BINFMT_ELF
+        select ARCH_WANT_OLD_COMPAT_IPC
+        help
+          Select this option if you want to enable your system kernel to
+          handle system-calls from ELF binaries for 31 bit ESA.  This option
+          (and some other stuff like libraries and such) is needed for
+          executing 31 bit applications.  It is safe to say "Y".
+
+config SYSVIPC_COMPAT
+        def_bool y if COMPAT && SYSVIPC
+
+config KEYS_COMPAT
+        def_bool y if COMPAT && KEYS
+
 config SMP
         def_bool y
         prompt "Symmetric multi-processing support"
@@ -203,6 +297,8 @@ config SCHED_BOOK
           Book scheduler support improves the CPU scheduler's decision making
           when dealing with machines that have several books.
 
+source kernel/Kconfig.preempt
+
 config MATHEMU
         def_bool y
         prompt "IEEE FPU emulation"
@@ -212,100 +308,35 @@ config MATHEMU
           on older ESA/390 machines. Say Y unless you know your machine doesn't
           need this.
 
-config COMPAT
-        def_bool y
-        prompt "Kernel support for 31 bit emulation"
-        depends on 64BIT
-        select COMPAT_BINFMT_ELF if BINFMT_ELF
-        select ARCH_WANT_OLD_COMPAT_IPC
-        help
-          Select this option if you want to enable your system kernel to
-          handle system-calls from ELF binaries for 31 bit ESA.  This option
-          (and some other stuff like libraries and such) is needed for
-          executing 31 bit applications.  It is safe to say "Y".
+source kernel/Kconfig.hz
 
-config SYSVIPC_COMPAT
-        def_bool y if COMPAT && SYSVIPC
+endmenu
 
-config KEYS_COMPAT
-        def_bool y if COMPAT && KEYS
+menu "Memory setup"
 
-config AUDIT_ARCH
+config ARCH_SPARSEMEM_ENABLE
         def_bool y
+        select SPARSEMEM_VMEMMAP_ENABLE
+        select SPARSEMEM_VMEMMAP
+        select SPARSEMEM_STATIC if !64BIT
 
-config HAVE_MARCH_Z900_FEATURES
-        def_bool n
-
-config HAVE_MARCH_Z990_FEATURES
-        def_bool n
-        select HAVE_MARCH_Z900_FEATURES
-
-config HAVE_MARCH_Z9_109_FEATURES
-        def_bool n
-        select HAVE_MARCH_Z990_FEATURES
-
-config HAVE_MARCH_Z10_FEATURES
-        def_bool n
-        select HAVE_MARCH_Z9_109_FEATURES
-
-config HAVE_MARCH_Z196_FEATURES
-        def_bool n
-        select HAVE_MARCH_Z10_FEATURES
-
-comment "Code generation options"
-
-choice
-        prompt "Processor type"
-        default MARCH_G5
-
-config MARCH_G5
-        bool "System/390 model G5 and G6"
-        depends on !64BIT
-        help
-          Select this to build a 31 bit kernel that works
-          on all ESA/390 and z/Architecture machines.
-
-config MARCH_Z900
-        bool "IBM zSeries model z800 and z900"
-        select HAVE_MARCH_Z900_FEATURES if 64BIT
-        help
-          Select this to enable optimizations for model z800/z900 (2064 and
-          2066 series). This will enable some optimizations that are not
-          available on older ESA/390 (31 Bit) only CPUs.
+config ARCH_SPARSEMEM_DEFAULT
+        def_bool y
 
-config MARCH_Z990
-        bool "IBM zSeries model z890 and z990"
-        select HAVE_MARCH_Z990_FEATURES if 64BIT
-        help
-          Select this to enable optimizations for model z890/z990 (2084 and
-          2086 series). The kernel will be slightly faster but will not work
-          on older machines.
+config ARCH_SELECT_MEMORY_MODEL
+        def_bool y
 
-config MARCH_Z9_109
-        bool "IBM System z9"
-        select HAVE_MARCH_Z9_109_FEATURES if 64BIT
-        help
-          Select this to enable optimizations for IBM System z9 (2094 and
-          2096 series). The kernel will be slightly faster but will not work
-          on older machines.
+config ARCH_ENABLE_MEMORY_HOTPLUG
+        def_bool y if SPARSEMEM
 
-config MARCH_Z10
-        bool "IBM System z10"
-        select HAVE_MARCH_Z10_FEATURES if 64BIT
-        help
-          Select this to enable optimizations for IBM System z10 (2097 and
-          2098 series). The kernel will be slightly faster but will not work
-          on older machines.
+config ARCH_ENABLE_MEMORY_HOTREMOVE
+        def_bool y
 
-config MARCH_Z196
-        bool "IBM zEnterprise 114 and 196"
-        select HAVE_MARCH_Z196_FEATURES if 64BIT
-        help
-          Select this to enable optimizations for IBM zEnterprise 114 and 196
-          (2818 and 2817 series). The kernel will be slightly faster but will
-          not work on older machines.
+config FORCE_MAX_ZONEORDER
+        int
+        default "9"
 
-endchoice
+source "mm/Kconfig"
 
 config PACK_STACK
         def_bool y
@@ -369,34 +400,9 @@ config WARN_DYNAMIC_STACK
 
           Say N if you are unsure.
 
-comment "Kernel preemption"
-
-source "kernel/Kconfig.preempt"
-
-config ARCH_SPARSEMEM_ENABLE
-        def_bool y
-        select SPARSEMEM_VMEMMAP_ENABLE
-        select SPARSEMEM_VMEMMAP
-        select SPARSEMEM_STATIC if !64BIT
-
-config ARCH_SPARSEMEM_DEFAULT
-        def_bool y
-
-config ARCH_SELECT_MEMORY_MODEL
-        def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTPLUG
-        def_bool y if SPARSEMEM
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
-        def_bool y
-
-config ARCH_HIBERNATION_POSSIBLE
-        def_bool y if 64BIT
-
-source "mm/Kconfig"
+endmenu
 
-comment "I/O subsystem configuration"
+menu "I/O subsystem"
 
 config QDIO
         def_tristate y
@@ -427,13 +433,84 @@ config CHSC_SCH
 
           If unsure, say N.
 
-comment "Misc"
+endmenu
+
+menu "Dump support"
+
+config CRASH_DUMP
+        bool "kernel crash dumps"
+        depends on 64BIT && SMP
+        select KEXEC
+        help
+          Generate crash dump after being started by kexec.
+          Crash dump kernels are loaded in the main kernel with kexec-tools
+          into a specially reserved region and then later executed after
+          a crash by kdump/kexec.
+          For more details see Documentation/kdump/kdump.txt
+
+config ZFCPDUMP
+        def_bool n
+        prompt "zfcpdump support"
+        select SMP
+        help
+          Select this option if you want to build an zfcpdump enabled kernel.
+          Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
+
+endmenu
+
+menu "Executable file formats / Emulations"
 
 source "fs/Kconfig.binfmt"
 
-config FORCE_MAX_ZONEORDER
-        int
-        default "9"
+config SECCOMP
+        def_bool y
+        prompt "Enable seccomp to safely compute untrusted bytecode"
+        depends on PROC_FS
+        help
+          This kernel feature is useful for number crunching applications
+          that may need to compute untrusted bytecode during their
+          execution. By using pipes or other transports made available to
+          the process as file descriptors supporting the read/write
+          syscalls, it's possible to isolate those applications in
+          their own address space using seccomp. Once seccomp is
+          enabled via /proc/<pid>/seccomp, it cannot be disabled
+          and the task is only allowed to execute a few safe syscalls
+          defined by each seccomp mode.
+
+          If unsure, say Y.
+
+endmenu
+
+menu "Power Management"
+
+config ARCH_HIBERNATION_POSSIBLE
+        def_bool y if 64BIT
+
+source "kernel/power/Kconfig"
+
+endmenu
+
+source "net/Kconfig"
+
+config PCMCIA
+        def_bool n
+
+config CCW
+        def_bool y
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/s390/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"
+
+menu "Virtualization"
 
 config PFAULT
         def_bool y
@@ -545,8 +622,6 @@ config APPLDATA_NET_SUM
           This can also be compiled as a module, which will be called
           appldata_net_sum.o.
 
-source kernel/Kconfig.hz
-
 config S390_HYPFS_FS
         def_bool y
         prompt "s390 hypervisor file system support"
@@ -555,32 +630,7 @@ config S390_HYPFS_FS
           This is a virtual file system intended to provide accounting
           information in an s390 hypervisor environment.
 
-config KEXEC
-        def_bool n
-        prompt "kexec system call"
-        help
-          kexec is a system call that implements the ability to shutdown your
-          current kernel, and to start another kernel.  It is like a reboot
-          but is independent of hardware/microcode support.
-
-config CRASH_DUMP
-        bool "kernel crash dumps"
-        depends on 64BIT && SMP
-        select KEXEC
-        help
-          Generate crash dump after being started by kexec.
-          Crash dump kernels are loaded in the main kernel with kexec-tools
-          into a specially reserved region and then later executed after
-          a crash by kdump/kexec.
-          For more details see Documentation/kdump/kdump.txt
-
-config ZFCPDUMP
-        def_bool n
-        prompt "zfcpdump support"
-        select SMP
-        help
-          Select this option if you want to build an zfcpdump enabled kernel.
-          Refer to <file:Documentation/s390/zfcpdump.txt> for more details on this.
+source "arch/s390/kvm/Kconfig"
 
 config S390_GUEST
         def_bool y
@@ -596,49 +646,4 @@ config S390_GUEST
           virtio transport. If KVM is detected, the virtio console will be
           the default console.
 
-config SECCOMP
-        def_bool y
-        prompt "Enable seccomp to safely compute untrusted bytecode"
-        depends on PROC_FS
-        help
-          This kernel feature is useful for number crunching applications
-          that may need to compute untrusted bytecode during their
-          execution. By using pipes or other transports made available to
-          the process as file descriptors supporting the read/write
-          syscalls, it's possible to isolate those applications in
-          their own address space using seccomp. Once seccomp is
-          enabled via /proc/<pid>/seccomp, it cannot be disabled
-          and the task is only allowed to execute a few safe syscalls
-          defined by each seccomp mode.
-
-          If unsure, say Y.
-
-endmenu
-
-menu "Power Management"
-
-source "kernel/power/Kconfig"
-
 endmenu
-
-source "net/Kconfig"
-
-config PCMCIA
-        def_bool n
-
-config CCW
-        def_bool y
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-source "arch/s390/Kconfig.debug"
-
-source "security/Kconfig"
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"
-
-source "arch/s390/kvm/Kconfig"
diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig
index 78eb9847008f..9b04a32e5695 100644
--- a/arch/s390/kvm/Kconfig
+++ b/arch/s390/kvm/Kconfig
@@ -5,7 +5,7 @@ source "virt/kvm/Kconfig"
 
 menuconfig VIRTUALIZATION
         def_bool y
-        prompt "Virtualization"
+        prompt "KVM"
         ---help---
           Say Y here to get to see options for using your Linux host to run other
           operating systems inside virtual machines (guests).