forked from jianmu/TencentOS-kernel
61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
/*
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* Copyright (C) 2019 Tencent Ltd. All rights reserved.
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*
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* File Name ：batch.h
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* Author ：
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* Date ：2019-12-26
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* Descriptor：
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*/
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _SCHED_BATCH_H
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#define _SCHED_BATCH_H
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#define MAX_CFS_PRIO 139
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#define MIN_BT_PRIO 140
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#define MAX_BT_PRIO 179
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#define BT_PRIO_WIDTH (MAX_BT_PRIO - MIN_BT_PRIO + 1)
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/*
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* Convert user-nice values [ -20 ... 0 ... 19 ]
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* to bt static priority [ MIN_BT_PRI + 1 ..MAX_BT_PRIO ],
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* and back.
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*/
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#define NICE_TO_BT_PRIO(nice) (MAX_RT_PRIO + (nice) + 20 + 40)
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#define PRIO_TO_BT_NICE(prio) ((prio) - MAX_RT_PRIO - 20 - 40)
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#define TASK_BT_NICE(p) PRIO_TO_BT_NICE((p)->static_prio)
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extern unsigned int sched_bt_on;
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static inline int cfs_prio(int prio)
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{
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if (prio >= MAX_RT_PRIO && prio < MIN_BT_PRIO)
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return 1;
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return 0;
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}
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static inline int bt_prio(int prio)
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{
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if (prio > MAX_CFS_PRIO && prio < MAX_PRIO)
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return 1;
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return 0;
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}
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static inline void bt_prio_adjust_pos(int *prio)
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{
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int priority = *prio;
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if (cfs_prio(priority))
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*prio = priority + BT_PRIO_WIDTH;
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}
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static inline void bt_prio_adjust_neg(int *prio)
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{
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int priority = *prio;
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if (bt_prio(priority))
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*prio = priority - BT_PRIO_WIDTH;
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}
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#endif /* _SCHED_BATCH_H */
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