sched: Trigger warning if ->migration_disabled counter underflows.

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If migrate_enable() is used more often than its counter part then it
remains undetected and rq::nr_pinned will underflow, too.

Add a warning if migrate_enable() is attempted if without a matching a
migrate_disable().

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20211129174654.668506-2-bigeasy@linutronix.de

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Sebastian Andrzej Siewior 2021-11-29 18:46:44 +01:00 • committed by Peter Zijlstra

parent 4e0d846344

commit 9d0df37797

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kernel/sched/core.c

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