selftests/futex: Add futex_numa_mpol

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Test the basic functionality for the NUMA and MPOL flags:
- FUTEX2_NUMA should take the NUMA node which is after the uaddr
  and use it.
- Only update the node if FUTEX_NO_NODE was set by the user
- FUTEX2_MPOL should use the memory based on the policy. I attempted to
  set the node with mbind() and then use this with MPOL but this fails
  and futex falls back to the default node for the current CPU.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250416162921.513656-22-bigeasy@linutronix.de

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Sebastian Andrzej Siewior 2025-04-16 18:29:21 +02:00 • committed by Peter Zijlstra

parent cda95faef7

commit 3163369407

5 changed files with 290 additions and 1 deletions

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1

tools/testing/selftests/futex/functional/.gitignore vendored

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tools/testing/selftests/futex/functional/Makefile

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232

tools/testing/selftests/futex/functional/futex_numa_mpol.c

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tools/testing/selftests/futex/functional/run.sh

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tools/testing/selftests/futex/include/futex2test.h

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