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70 lines
2.2 KiB
70 lines
2.2 KiB
8 months ago
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/*
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* Copyright : (C) 2022 Phytium Information Technology, Inc.
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* All Rights Reserved.
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*
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* This program is OPEN SOURCE software: you can redistribute it and/or modify it
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* under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd,
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* either version 1.0 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the Phytium Public License for more details.
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*
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*
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* FilePath: fcpu_affinity_mask.c
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* Date: 2023-11-6 10:33:28
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* LastEditTime: 2023-11-6 10:33:28
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* Description: This file is for
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*
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* Modify History:
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* Ver Who Date Changes
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* ----- ------ -------- --------------------------------------
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* 1.0 zhangyan 2023/11/6 init commit
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*/
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#include "fparameters.h"
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const int cluster_ids[FCORE_NUM] = {
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CORE0_AFF,
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CORE1_AFF,
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CORE2_AFF,
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CORE3_AFF,
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CORE4_AFF,
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CORE5_AFF,
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CORE6_AFF,
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CORE7_AFF
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};
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/**
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* @name: GetCpuMaskToAffval
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* @msg: Convert information in cpu_mask to cluster_ID and target_list
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* @param {u32} *cpu_mask is each bit of cpu_mask represents a selected CPU, for example, 0x3 represents core0 and CORE1 .
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* @param {u32} *cluster_id is information about the cluster in which core resides ,format is
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* |--------[bit31-24]-------[bit23-16]-------------[bit15-8]-----------[bit7-0]
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* |--------Affinity level3-----Affinity level2-----Affinity level1-----Affinity level0
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* @param {u32} *target_list is core mask in cluster
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* @return {u32} 0 indicates that the conversion was not successful , 1 indicates that the conversion was successful
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*/
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u32 GetCpuMaskToAffval(u32 *cpu_mask, u32 *cluster_id, u32 *target_list)
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{
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if (*cpu_mask == 0)
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{
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return 0;
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}
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*target_list = 0;
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*cluster_id = 0;
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for (int i = 0; i < sizeof(cluster_ids) / sizeof(cluster_ids[0]); i++)
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{
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if (*cpu_mask & (1 << i))
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{
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*cpu_mask &= ~(1 << i) ;
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*cluster_id = cluster_ids[i];
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*target_list = 1;
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break;
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}
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}
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return 1;
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}
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