sched/mmcid: Convert mm CID mask to a bitmap

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This is truly a bitmap and just conveniently uses a cpumask because the
maximum size of the bitmap is nr_cpu_ids.

But that prevents to do searches for a zero bit in a limited range, which
is helpful to provide an efficient mechanism to consolidate the CID space
when the number of users decreases.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
Link: https://patch.msgid.link/20251119172549.642866767@linutronix.de

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This commit is contained in:

Thomas Gleixner 2025-11-19 18:27:03 +01:00

parent 35a5c37cb9

commit 539115f08c

3 changed files with 9 additions and 8 deletions

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9

include/linux/mm_types.h

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2

kernel/sched/core.c

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6

kernel/sched/sched.h

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