On Tue, Oct 14, 2025 at 02:37:11PM +0200, Geert Uytterhoeven wrote:

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+       help
+         Improves the CPU scheduler's decision making when dealing with
+         MultiThreading at a cost of slightly increased overhead in some
+         places. If unsure say N here.

So it should default to n?

That's just help text that got carried around. Many of the architectures
that had default y still had this text on. I suppose we can change it if
someone cares.

Please do so.

How about we remove the recommendation like so? There are many help
things that do not have a recommendation. Mostly these options add a
little code and the most expensive bits tend to be gated by
static_branch() so it really shouldn't be that bit of a burden.

CONFIG_SMP was the big one for the scheduler, and Ingo recently removed
that (he did an effective unifdef CONFIG_SMP=y on the scheduler code).

---

diff --git a/arch/Kconfig b/arch/Kconfig
index ebe08b9186ad..3d8e2025a4ac 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig

@@ -57,7 +57,7 @@ config SCHED_SMT
        help
          Improves the CPU scheduler's decision making when dealing with
          MultiThreading at a cost of slightly increased overhead in some
-         places. If unsure say N here.
+         places.

 config SCHED_CLUSTER
        bool "Cluster scheduler support"

@@ -77,7 +77,7 @@ config SCHED_MC
        help
          Multi-core scheduler support improves the CPU scheduler's decision
          making when dealing with multi-core CPU chips at a cost of slightly
-         increased overhead in some places. If unsure say N here.
+         increased overhead in some places.

 # Selected by HOTPLUG_CORE_SYNC_DEAD or HOTPLUG_CORE_SYNC_FULL
 config HOTPLUG_CORE_SYNC