diff options
Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index d68fe34799b0..009c58b575c0 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -60,7 +60,6 @@ config PCI_QUIRKS config S390 def_bool y - select ARCH_DISCARD_MEMBLOCK select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS select ARCH_HAVE_NMI_SAFE_CMPXCHG @@ -130,6 +129,7 @@ config S390 select HAVE_KVM if 64BIT select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP + select HAVE_MEMBLOCK_PHYS_MAP select HAVE_MOD_ARCH_SPECIFIC select HAVE_OPROFILE select HAVE_PERF_EVENTS @@ -139,6 +139,7 @@ config S390 select HAVE_VIRT_CPU_ACCOUNTING select KTIME_SCALAR if 32BIT select MODULES_USE_ELF_RELA + select NO_BOOTMEM select OLD_SIGACTION select OLD_SIGSUSPEND3 select SYSCTL_EXCEPTION_TRACE @@ -329,6 +330,16 @@ config SYSVIPC_COMPAT config KEYS_COMPAT def_bool y if COMPAT && KEYS +config S390_TICKET_SPINLOCK + bool "Use ticket spinlocks" + depends on S390 && SMP + default n + help + This enables support for ticket spinlocks. Ticket spinlocks + are more fair by means that waiting CPUs will get the lock + in the order they tried to obtain it. + The tradeoff is more complex code that could impact performance. + config SMP def_bool y prompt "Symmetric multi-processing support" @@ -592,21 +603,14 @@ config CRASH_DUMP bool "kernel crash dumps" depends on 64BIT && SMP select KEXEC - select ZFCPDUMP 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" - depends on 64BIT && 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. + This option also enables s390 zfcpdump. + See also <file:Documentation/s390/zfcpdump.txt> endmenu |