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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-07-01 00:37:49 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-07-01 00:37:49 +0200 |
| commit | a6eaf3850cb171c328a8b0db6d3c79286a1eba9d (patch) | |
| tree | 2cef5ef9d0c7ae61caba1c9d25c80b6c6d6c1254 /kernel/Kconfig.preempt | |
| parent | Merge tag 'microblaze-v5.14' of git://git.monstr.eu/linux-2.6-microblaze (diff) | |
| parent | Merge branch 'sched/core' into sched/urgent, to pick up fix (diff) | |
| download | linux-a6eaf3850cb171c328a8b0db6d3c79286a1eba9d.tar.xz linux-a6eaf3850cb171c328a8b0db6d3c79286a1eba9d.zip | |
Merge tag 'sched-urgent-2021-06-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix a small inconsistency (bug) in load tracking, caught by a new
warning that several people reported.
- Flip CONFIG_SCHED_CORE to default-disabled, and update the Kconfig
help text.
* tag 'sched-urgent-2021-06-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Disable CONFIG_SCHED_CORE by default
sched/fair: Ensure _sum and _avg values stay consistent
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. |