diff options
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 25950f0ccc33..715c1f3664c4 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -939,14 +939,24 @@ config SCHED_MC making when dealing with multi-core CPU chips at a cost of slightly increased overhead in some places. If unsure say N here. -config SCHED_ITMT - bool "Intel Turbo Boost Max Technology (ITMT) scheduler support" +config SCHED_MC_PRIO + bool "CPU core priorities scheduler support" depends on SCHED_MC && CPU_SUP_INTEL && X86_INTEL_PSTATE + default y ---help--- - ITMT enabled scheduler support improves the CPU scheduler's decision - to move tasks to cpu core that can be boosted to a higher frequency - than others. It will have better performance at a cost of slightly - increased overhead in task migrations. If unsure say N here. + Intel Turbo Boost Max Technology 3.0 enabled CPUs have a + core ordering determined at manufacturing time, which allows + certain cores to reach higher turbo frequencies (when running + single threaded workloads) than others. + + Enabling this kernel feature teaches the scheduler about + the TBM3 (aka ITMT) priority order of the CPU cores and adjusts the + scheduler's CPU selection logic accordingly, so that higher + overall system performance can be achieved. + + This feature will have no effect on CPUs without this feature. + + If unsure say Y here. source "kernel/Kconfig.preempt" |
