sched_ext: Add scx_arena_to_kaddr() / scx_kaddr_to_arena()

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Translating between a BPF-arena pointer and its kernel-side address is just
an add or subtract of the arena's kern_vm start. More such translations are
coming, so cache that start on scx_sched as @arena_kern_base at arena attach
and wrap both directions. Convert the existing open-coded subtraction in
scx_call_op_set_cpumask().

Signed-off-by: Tejun Heo <tj@kernel.org>

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Tejun Heo 2026-06-03 23:57:03 -10:00

parent 70390da50c

commit 2e05f2fd0d

2 changed files with 40 additions and 15 deletions

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19

kernel/sched/ext.c

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36

kernel/sched/ext_internal.h

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