diff options
Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 863a62a6de3c..829c67986db7 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -148,6 +148,7 @@ config S390 select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_TRACER select HAVE_FUTEX_CMPXCHG if FUTEX + select HAVE_GCC_PLUGINS select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZ4 @@ -158,6 +159,8 @@ config S390 select HAVE_KRETPROBES select HAVE_KVM select HAVE_LIVEPATCH + select HAVE_PERF_REGS + select HAVE_PERF_USER_STACK_DUMP select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP select HAVE_MEMBLOCK_PHYS_MAP @@ -538,22 +541,6 @@ config ARCH_RANDOM If unsure, say Y. -config ALTERNATIVES - def_bool y - prompt "Patch optimized instructions for running CPU type" - help - When enabled the kernel code is compiled with additional - alternative instructions blocks optimized for newer CPU types. - These alternative instructions blocks are patched at kernel boot - time when running CPU supports them. This mechanism is used to - optimize some critical code paths (i.e. spinlocks) for newer CPUs - even if kernel is build to support older machine generations. - - This mechanism could be disabled by appending "noaltinstr" - option to the kernel command line. - - If unsure, say Y. - endmenu menu "Memory setup" |