futex: Allow automatic allocation of process wide futex hash

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Allocate a private futex hash with 16 slots if a task forks its first
thread.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250416162921.513656-14-bigeasy@linutronix.de

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Sebastian Andrzej Siewior 2025-04-16 18:29:13 +02:00 • committed by Peter Zijlstra

parent 80367ad01d

commit 7c4f75a21f

3 changed files with 39 additions and 0 deletions

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6

include/linux/futex.h

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22

kernel/fork.c

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11

kernel/futex/core.c

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