diff options
Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 78 |
1 files changed, 49 insertions, 29 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index f0777a47e3a..e0b98e71ff4 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -1,8 +1,3 @@ -# -# For a description of the syntax of this configuration file, -# see Documentation/kbuild/kconfig-language.txt. -# - config SCHED_MC def_bool y depends on SMP @@ -60,6 +55,9 @@ config NO_IOMEM config NO_DMA def_bool y +config ARCH_DMA_ADDR_T_64BIT + def_bool 64BIT + config GENERIC_LOCKBREAK bool default y @@ -75,8 +73,6 @@ config VIRT_CPU_ACCOUNTING config ARCH_SUPPORTS_DEBUG_PAGEALLOC def_bool y -mainmenu "Linux Kernel Configuration" - config S390 def_bool y select USE_GENERIC_SMP_HELPERS if SMP @@ -84,6 +80,7 @@ config S390 select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_TRACE_MCOUNT_TEST select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_C_RECORDMCOUNT select HAVE_SYSCALL_TRACEPOINTS select HAVE_DYNAMIC_FTRACE select HAVE_FUNCTION_GRAPH_TRACER @@ -95,11 +92,13 @@ config S390 select HAVE_KVM if 64BIT select HAVE_ARCH_TRACEHOOK select INIT_ALL_POSSIBLE + select HAVE_IRQ_WORK select HAVE_PERF_EVENTS select HAVE_KERNEL_GZIP select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_LZMA select HAVE_KERNEL_LZO + select HAVE_GET_USER_PAGES_FAST select ARCH_INLINE_SPIN_TRYLOCK select ARCH_INLINE_SPIN_TRYLOCK_BH select ARCH_INLINE_SPIN_LOCK @@ -146,7 +145,7 @@ source "kernel/time/Kconfig" config 64BIT bool "64 bit kernel" help - Select this option if you have a 64 bit IBM zSeries machine + Select this option if you have an IBM z/Architecture machine and want to use the 64 bit addressing mode. config 32BIT @@ -198,12 +197,28 @@ config HOTPLUG_CPU can be controlled through /sys/devices/system/cpu/cpu#. Say N if you want to disable CPU hotplug. +config SCHED_MC + def_bool y + prompt "Multi-core scheduler support" + depends on SMP + help + Multi-core scheduler support improves the CPU scheduler's decision + making when dealing with multi-core CPU chips at a cost of slightly + increased overhead in some places. + +config SCHED_BOOK + bool "Book scheduler support" + depends on SMP && SCHED_MC + help + Book scheduler support improves the CPU scheduler's decision making + when dealing with machines that have several books. + config MATHEMU bool "IEEE FPU emulation" depends on MARCH_G5 help This option is required for IEEE compliant floating point arithmetic - on older S/390 machines. Say Y unless you know your machine doesn't + on older ESA/390 machines. Say Y unless you know your machine doesn't need this. config COMPAT @@ -232,8 +247,8 @@ config S390_EXEC_PROTECT space programs and it also selects the addressing mode option above. The kernel parameter noexec=on will enable this feature and also switch the addressing modes, default is disabled. Enabling this (via - kernel parameter) on machines earlier than IBM System z9-109 EC/BC - will reduce system performance. + kernel parameter) on machines earlier than IBM System z9 this will + reduce system performance. comment "Code generation options" @@ -242,41 +257,46 @@ choice default MARCH_G5 config MARCH_G5 - bool "S/390 model G5 and G6" + bool "System/390 model G5 and G6" depends on !64BIT help Select this to build a 31 bit kernel that works - on all S/390 and zSeries machines. + on all ESA/390 and z/Architecture machines. config MARCH_Z900 - bool "IBM eServer zSeries model z800 and z900" + bool "IBM zSeries model z800 and z900" help - Select this to optimize for zSeries machines. This - will enable some optimizations that are not available - on older 31 bit only CPUs. + 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 eServer zSeries model z890 and z990" + bool "IBM zSeries model z890 and z990" help - Select this enable optimizations for model z890/z990. - This will be slightly faster but does not work on - older machines such as the z900. + 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" help - Select this to enable optimizations for IBM System z9-109, IBM - System z9 Enterprise Class (z9 EC), and IBM System z9 Business - Class (z9 BC). The kernel will be slightly faster but will not - work on older machines such as the z990, z890, z900, and z800. + 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" help - Select this to enable optimizations for IBM System z10. The - kernel will be slightly faster but will not work on older - machines such as the z990, z890, z900, z800, z9-109, z9-ec - and z9-bc. + 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 196" + help + Select this to enable optimizations for IBM zEnterprise 196 + (2817 series). The kernel will be slightly faster but will not work + on older machines. endchoice |