Commit d2343cb8 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

sched/core: Disable CONFIG_SCHED_CORE by default 



This option at minimum adds extra code to the scheduler - even if
it's default unused - and most users wouldn't want it.

Reported-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent adf3c31e

kernel/Kconfig.preempt

+3 −3
Original line number Diff line number Diff line
@@ -102,7 +102,6 @@ config PREEMPT_DYNAMIC 


config SCHED_CORE

	bool "Core Scheduling for SMT"

	default y

	depends on SCHED_SMT

	help

	  This option permits Core Scheduling, a means of coordinated task
@@ -115,7 +114,8 @@ config SCHED_CORE 
	   - mitigation of some (not all) SMT side channels;

	   - limiting SMT interference to improve determinism and/or performance.



	  SCHED_CORE is default enabled when SCHED_SMT is enabled -- when

	  unused there should be no impact on performance.

	  SCHED_CORE is default disabled. When it is enabled and unused,

	  which is the likely usage by Linux distributions, there should

	  be no measurable impact on performance.