sched/fair: Avoid rq->lock bouncing in sched_balance_newidle()

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While poking at this code recently I noted we do a pointless
unlock+lock cycle in sched_balance_newidle(). We drop the rq->lock (so
we can balance) but then instantly grab the same rq->lock again in
sched_balance_update_blocked_averages().

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://patch.msgid.link/20251127154725.532469061@infradead.org

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Peter Zijlstra 2025-11-12 16:08:23 +01:00 • committed by Ingo Molnar

parent 089d84203a

commit 45e0922508

1 changed files with 18 additions and 9 deletions

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kernel/sched/fair.c

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