sched/fair: Limit hrtick work

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The task_tick_fair() function does:

 - update the hierarchical runtimes
 - drive NUMA-balancing
 - update load-balance statistics
 - drive force-idle preemption

All but the very first can be limited to the periodic tick. Let hrtick
only update accounting and drive preemption, not load-balancing and
other bits.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20250918080205.563385766@infradead.org

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Peter Zijlstra 2025-09-01 22:50:56 +02:00 • committed by Ingo Molnar

parent a03fee333a

commit 95a0155224

1 changed files with 6 additions and 0 deletions

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kernel/sched/fair.c

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