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| author | Ingo Molnar <mingo@kernel.org> | 2021-06-28 21:55:16 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-06-28 22:43:05 +0200 |
| commit | d2343cb8d154fe20c4499711bb3a9af2095b2b4b (patch) | |
| tree | a97cc45cffcfb0d49fe98dd8151bb5e05a069ff5 /kernel/Kconfig.preempt | |
| parent | adf3c31e18b765ea24eba7b0c1efc076b8ee3d55 (diff) | |
| download | linux-d2343cb8d154fe20c4499711bb3a9af2095b2b4b.tar.gz linux-d2343cb8d154fe20c4499711bb3a9af2095b2b4b.tar.bz2 linux-d2343cb8d154fe20c4499711bb3a9af2095b2b4b.zip | |
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: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/Kconfig.preempt')
| -rw-r--r-- | kernel/Kconfig.preempt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt index bd7c4147b9a8..5876e30c5740 100644 --- a/kernel/Kconfig.preempt +++ b/kernel/Kconfig.preempt @@ -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. |