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scx_layered: Add idle core selection for core architectures when using GROWTH_ALGO_LITTLE_BIG #748

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hodgesds opened this issue Oct 7, 2024 · 0 comments
Open

scx_layered: Add idle core selection for core architectures when using GROWTH_ALGO_LITTLE_BIG #748

hodgesds opened this issue Oct 7, 2024 · 0 comments
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bpf enhancement New feature or request good first issue Good for newcomers help wanted Extra attention is needed scx_layered

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hodgesds commented Oct 7, 2024

When scx_layered is selecting an idle CPU for a task it should consider the layer growth algorithm. Currently when a layer is using the GROWTH_ALGO_BIG_LITTLE growth algorithm scx_layered will try to place a task on a big core. It should also do the same thing for little cores when using the GROWTH_ALGO_LITTLE_BIG layer growth algorithm. This should ensure that layers that are configured to utilize little cores are sticky to little CPUs.

For reference see the GROWTH_ALGO_BIG_LITTLE implementation.
@hodgesds hodgesds added enhancement New feature or request good first issue Good for newcomers help wanted Extra attention is needed bpf scx_layered labels Oct 7, 2024
@hodgesds hodgesds reopened this Oct 15, 2024
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bpf enhancement New feature or request good first issue Good for newcomers help wanted Extra attention is needed scx_layered
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