select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
select ARCH_HAS_GCOV_PROFILE_ALL
+ select ARCH_HAS_SG_CHAIN
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK
select ARCH_INLINE_READ_LOCK_BH
select HAVE_BPF_JIT if 64BIT && PACK_STACK
select HAVE_CMPXCHG_DOUBLE
select HAVE_CMPXCHG_LOCAL
- select HAVE_C_RECORDMCOUNT
select HAVE_DEBUG_KMEMLEAK
select HAVE_DYNAMIC_FTRACE if 64BIT
select HAVE_DYNAMIC_FTRACE_WITH_REGS if 64BIT
select HAVE_KPROBES
select HAVE_KRETPROBES
select HAVE_KVM if 64BIT
+ select HAVE_LIVEPATCH
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_MEMBLOCK_PHYS_MAP
select TTY
select VIRT_CPU_ACCOUNTING
select VIRT_TO_BUS
- select ARCH_HAS_SG_CHAIN
config SCHED_OMIT_FRAME_POINTER
def_bool y
source "kernel/Kconfig.freezer"
+ source "kernel/livepatch/Kconfig"
+
menu "Processor type and features"
config HAVE_MARCH_Z900_FEATURES
def_bool n
select HAVE_MARCH_Z196_FEATURES
+config HAVE_MARCH_Z13_FEATURES
+ def_bool n
+ select HAVE_MARCH_ZEC12_FEATURES
+
choice
prompt "Processor type"
default MARCH_G5
2827 series). The kernel will be slightly faster but will not work on
older machines.
+config MARCH_Z13
+ bool "IBM z13"
+ select HAVE_MARCH_Z13_FEATURES if 64BIT
+ help
+ Select this to enable optimizations for IBM z13 (2964 series).
+ The kernel will be slightly faster but will not work on older
+ machines.
+
endchoice
config MARCH_G5_TUNE
config MARCH_ZEC12_TUNE
def_bool TUNE_ZEC12 || MARCH_ZEC12 && TUNE_DEFAULT
+config MARCH_Z13_TUNE
+ def_bool TUNE_Z13 || MARCH_Z13 && TUNE_DEFAULT
+
choice
prompt "Tune code generation"
default TUNE_DEFAULT
config TUNE_ZEC12
bool "IBM zBC12 and zEC12"
+config TUNE_Z13
+ bool "IBM z13"
+
endchoice
config 64BIT
Even if you don't know what to do here, say Y.
config NR_CPUS
- int "Maximum number of CPUs (2-256)"
- range 2 256
+ int "Maximum number of CPUs (2-512)"
+ range 2 512
depends on SMP
default "32" if !64BIT
default "64" if 64BIT
help
This allows you to specify the maximum number of CPUs which this
- kernel will support. The maximum supported value is 256 and the
+ kernel will support. The maximum supported value is 512 and the
minimum value which makes sense is 2.
This is purely to save memory - each supported CPU adds
can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug.
+config SCHED_SMT
+ def_bool n
+
config SCHED_MC
def_bool n
config SCHED_BOOK
+ def_bool n
+
+config SCHED_TOPOLOGY
def_bool y
- prompt "Book scheduler support"
+ prompt "Topology scheduler support"
depends on SMP
+ select SCHED_SMT
select SCHED_MC
+ select SCHED_BOOK
help
- Book scheduler support improves the CPU scheduler's decision making
- when dealing with machines that have several books.
+ Topology scheduler support improves the CPU scheduler's decision
+ making when dealing with machines that have multi-threading,
+ multiple cores or multiple books.
source kernel/Kconfig.preempt