From 0a21fc1214a25427e13538665ff2afbe707a0b9f Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 30 Nov 2016 08:33:54 +0100 Subject: [PATCH] sched/x86: Make CONFIG_SCHED_MC_PRIO=y easier to enable Right now CONFIG_SCHED_MC_PRIO has X86_INTEL_PSTATE as a dependency, which is not enabled by default and which hides the CONFIG_SCHED_MC_PRIO hardware-enabling feature. Select X86_INTEL_PSTATE instead, plus its dependency (CPU_FREQ), if the user enables CONFIG_SCHED_MC_PRIO=y. (Also align the CONFIG_SCHED_MC_PRIO Kconfig help text in standard style.) Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Srinivas Pandruvada Cc: Thomas Gleixner Cc: Tim Chen Cc: bp@suse.de Cc: jolsa@redhat.com Cc: linux-acpi@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: rjw@rjwysocki.net Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar --- arch/x86/Kconfig | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 715c1f3664c4..b50e5eeefd21 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -941,22 +941,24 @@ config SCHED_MC config SCHED_MC_PRIO bool "CPU core priorities scheduler support" - depends on SCHED_MC && CPU_SUP_INTEL && X86_INTEL_PSTATE + depends on SCHED_MC && CPU_SUP_INTEL + select X86_INTEL_PSTATE + select CPU_FREQ default y ---help--- - 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. + 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. + 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. + This feature will have no effect on CPUs without this feature. - If unsure say Y here. + If unsure say Y here. source "kernel/Kconfig.preempt" -- 2.20.1