diff options
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 222855cc0158..9d382fa9951c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1025,6 +1025,22 @@ config NR_CPUS config SCHED_SMT def_bool y if SMP +config SMT_NICE + bool "SMT (Hyperthreading) aware nice priority and policy support" + depends on SCHED_MUQSS && SCHED_SMT + default y + ---help--- + Enabling Hyperthreading on Intel CPUs decreases the effectiveness + of the use of 'nice' levels and different scheduling policies + (e.g. realtime) due to sharing of CPU power between hyperthreads. + SMT nice support makes each logical CPU aware of what is running on + its hyperthread siblings, maintaining appropriate distribution of + CPU according to nice levels and scheduling policies at the expense + of slightly increased overhead. + + If unsure say Y here. + + config SCHED_MC def_bool y prompt "Multi-core scheduler support" @@ -1055,6 +1071,8 @@ config SCHED_MC_PRIO If unsure say Y here. +source "kernel/Kconfig.MuQSS" + config UP_LATE_INIT def_bool y depends on !SMP && X86_LOCAL_APIC |