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[layered] Implement reverse weight DSQ algorithm

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This commit is contained in:
Ryan Wilson 2024-10-10 12:53:25 -07:00
parent 9f60053312
commit 8c8250b1e2
1 changed files with 7 additions and 3 deletions
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10
scheds/rust/scx_layered/src/bpf/main.bpf.c
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@ -142,9 +142,13 @@ static __noinline u32 iter_layer_dsq_ctx(int idx, u32 layer_idx)
return ret;
}
case DSQ_ITER_REVERSE_WEIGHT: {
// TODO: Correctly implement this algo, see:
// https://github.com/sched-ext/scx/issues/738
return dsq_iter_weight_ctx(idx);
u32 ret;
ret = dsq_iter_weight_ctx(nr_layers - 1 - idx);
if (ret >= nr_layers) {
scx_bpf_error("can't happen");
return ret;
}
return ret;
}
default:
scx_bpf_error("unknown dsq iter algo");