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scx_layered: Fix dump format

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Fix a small bug where incorrect per CPU costs were being dumped. The
output format should now appropriately match the per-CPU costs. The
following dump shows the correct format:

    HI_FALLBACK[1024] nr_queued=46 -25755ms
    HI_FALLBACK[1025] nr_queued=43 -25947ms
    LO_FALLBACK nr_queued=0 -0ms
    COST GLOBAL[0][random] budget=16791955959896739
    capacity=16791955959896739
    COST GLOBAL[1][hodgesd] budget=16791955959896739
    capacity=16791955959896739
    COST GLOBAL[2][stress-ng] budget=43243243243243243
    capacity=43243243243243243
    COST GLOBAL[3][normal] budget=33583911919793478
    capacity=33583911919793478
    COST FALLBACK[1024][0] budget=16791955959896739
    capacity=16791955959896739
    COST FALLBACK[1025][1] budget=16791955959896739
    capacity=16791955959896739
    COST CPU[0][0][random] budget=5405405405405405 capacity=5405405405405405
    COST CPU[0][1][hodgesd] budget=2702702694605435
    capacity=2702702702702702
    COST CPU[0][2][stress-ng] budget=540514231324919
    capacity=540540540540540
    COST CPU[0][3][normal] budget=5405405342325615 capacity=5405405405405405
    COST CPU[0]FALLBACK[0][1024] budget=0 capacity=5405405405405405
    COST CPU[0]FALLBACK[1][1025] budget=1 capacity=2702702694605435
    COST CPU[1][0][random] budget=5405405405405405 capacity=5405405405405405
    COST CPU[1][1][hodgesd] budget=2702702675501951
    capacity=2702702702702702
    COST CPU[1][2][stress-ng] budget=540514250569731
    capacity=540540540540540

Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>
This commit is contained in:
Daniel Hodges 2024-11-12 10:19:53 -08:00
parent 673316827b
commit f7009f7960
1 changed files with 2 additions and 2 deletions
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4
scheds/rust/scx_layered/src/bpf/main.bpf.c
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@ -2286,12 +2286,12 @@ int dump_cost(void)
// Per CPU costs
bpf_for(i, 0, nr_possible_cpus) {
if (!(costc = lookup_cpu_cost(j))) {
if (!(costc = lookup_cpu_cost(i))) {
scx_bpf_error("unabled to lookup layer %d", i);
continue;
}
bpf_for(j, 0, nr_layers) {
layer = lookup_layer(i);
layer = lookup_layer(j);
if (!layer) {
scx_bpf_error("unabled to lookup layer %d", i);
continue;