linux

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Sebastian Andrzej Siewior e3924279e5 futex: Use a hashmask instead of hashsize

The global hash uses futex_hashsize to save the amount of the hash
buckets that have been allocated during system boot. On each
futex_hash() invocation this number is substracted by one to get the
mask. This can be optimized by saving directly the mask avoiding the
substraction on each futex_hash() invocation.

Rename futex_hashsize to futex_hashmask and save the mask of the
allocated hash map.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Waiman Long <longman@redhat.com>
Link: https://lore.kernel.org/all/20250226091057.bX8vObR4@linutronix.de

2025-02-26 16:07:59 +01:00

core.c

futex: Use a hashmask instead of hashsize

2025-02-26 16:07:59 +01:00

futex.h

futex: Pass in task to futex_queue()

2025-01-24 09:37:30 +01:00

Makefile

futex: Split out wait/wake

2021-10-07 13:51:11 +02:00

pi.c

futex: Pass in task to futex_queue()