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174 uint64_t scaling_factor = 1, iw_gcd = 1; 175 unsigned int i = 0; 176 177 /* Recalculate the bandwidth distribution given the new info */ 178 for (i = 0; i < nr_node_ids; i++) 179 sum_bw += bw[i]; 180 181 /* If node is not set or has < 1% of total bw, use minimum value of 1 */ 182 for (i = 0; i < nr_node_ids; i++) { 183 if (bw[i]) { 184 scaling_factor = 100 * bw[i]; 185 new_iw[i] = max(scaling_factor / sum_bw, 1); 186 } else { 187 new_iw[i] = 1; 188 } 189 sum_iw += new_iw[i]; 190 } 191 192 /* 193 * Scale each node's share of the total bandwidth from percentages 194 * to whole numbers in the range [1, weightiness] 195 */ 196 for (i = 0; i < nr_node_ids; i++) { 197 scaling_factor = weightiness * new_iw[i]; 198 new_iw[i] = max(scaling_factor / sum_iw, 1); 199 if (i == 0) 200 iw_gcd = new_iw[0]; 201 iw_gcd = gcd(iw_gcd, new_iw[i]); 202 } 203 204 /* 1:2 is strictly better than 16:32. Reduce by the weights' GCD. */ 205 for (i = 0; i < nr_node_ids; i++) 206 new_iw[i] /= iw_gcd; > 207 } 208 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki