[PATCH] sched: document prio_to_wmult[]
document prio_to_wmult[]. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -748,6 +748,13 @@ static const int prio_to_weight[40] = {
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/* 10 */ 110, 87, 70, 56, 45, 36, 29, 23, 18, 15,
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};
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/*
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* Inverse (2^32/x) values of the prio_to_weight[] array, precalculated.
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*
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* In cases where the weight does not change often, we can use the
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* precalculated inverse to speed up arithmetics by turning divisions
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* into multiplications:
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*/
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static const u32 prio_to_wmult[40] = {
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48356, 60446, 75558, 94446, 118058, 147573,
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184467, 230589, 288233, 360285, 450347,
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