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1 /*
2  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3  * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without modification,
6  * are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice, this list of
9  *    conditions and the following disclaimer.
10  *
11  * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12  *    of conditions and the following disclaimer in the documentation and/or other materials
13  *    provided with the distribution.
14  *
15  * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16  *    to endorse or promote products derived from this software without specific prior written
17  *    permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #ifndef _LOS_SORTLINK_PRI_H
33 #define _LOS_SORTLINK_PRI_H
34 
35 #include "los_typedef.h"
36 #include "los_list.h"
37 #include "los_spinlock.h"
38 
39 #ifdef __cplusplus
40 #if __cplusplus
41 extern "C" {
42 #endif /* __cplusplus */
43 #endif /* __cplusplus */
44 
45 typedef struct {
46     LOS_DL_LIST sortLinkNode;
47     UINT64      responseTime;
48 #ifdef LOSCFG_KERNEL_SMP
49     UINT32      cpuid;
50 #endif
51 } SortLinkList;
52 
53 typedef struct {
54     LOS_DL_LIST sortLink;
55     UINT32      nodeNum;
56     SPIN_LOCK_S spinLock;     /* swtmr sort link spin lock */
57 } SortLinkAttribute;
58 
59 #define OS_SORT_LINK_INVALID_TIME ((UINT64)-1)
60 #define SET_SORTLIST_VALUE(sortList, value) (((SortLinkList *)(sortList))->responseTime = (value))
61 #define GET_SORTLIST_VALUE(sortList) (((SortLinkList *)(sortList))->responseTime)
62 
OsDeleteNodeSortLink(SortLinkAttribute * sortLinkHeader,SortLinkList * sortList)63 STATIC INLINE VOID OsDeleteNodeSortLink(SortLinkAttribute *sortLinkHeader, SortLinkList *sortList)
64 {
65     LOS_ListDelete(&sortList->sortLinkNode);
66     SET_SORTLIST_VALUE(sortList, OS_SORT_LINK_INVALID_TIME);
67     sortLinkHeader->nodeNum--;
68 }
69 
OsGetSortLinkNextExpireTime(SortLinkAttribute * sortHeader,UINT64 startTime,UINT32 tickPrecision)70 STATIC INLINE UINT64 OsGetSortLinkNextExpireTime(SortLinkAttribute *sortHeader, UINT64 startTime, UINT32 tickPrecision)
71 {
72     LOS_DL_LIST *head = &sortHeader->sortLink;
73     LOS_DL_LIST *list = head->pstNext;
74 
75     LOS_SpinLock(&sortHeader->spinLock);
76     if (LOS_ListEmpty(head)) {
77         LOS_SpinUnlock(&sortHeader->spinLock);
78         return OS_SORT_LINK_INVALID_TIME - tickPrecision;
79     }
80 
81     SortLinkList *listSorted = LOS_DL_LIST_ENTRY(list, SortLinkList, sortLinkNode);
82     if (listSorted->responseTime <= (startTime + tickPrecision)) {
83         LOS_SpinUnlock(&sortHeader->spinLock);
84         return startTime + tickPrecision;
85     }
86 
87     LOS_SpinUnlock(&sortHeader->spinLock);
88     return listSorted->responseTime;
89 }
90 
OsGetSortLinkNodeNum(const SortLinkAttribute * head)91 STATIC INLINE UINT32 OsGetSortLinkNodeNum(const SortLinkAttribute *head)
92 {
93     return head->nodeNum;
94 }
95 
OsGetSortLinkNodeCpuid(const SortLinkList * node)96 STATIC INLINE UINT16 OsGetSortLinkNodeCpuid(const SortLinkList *node)
97 {
98 #ifdef LOSCFG_KERNEL_SMP
99     return node->cpuid;
100 #else
101     return 0;
102 #endif
103 }
104 
105 VOID OsSortLinkInit(SortLinkAttribute *sortLinkHeader);
106 VOID OsAdd2SortLink(SortLinkAttribute *head, SortLinkList *node, UINT64 responseTime, UINT16 idleCpu);
107 VOID OsDeleteFromSortLink(SortLinkAttribute *head, SortLinkList *node);
108 UINT64 OsSortLinkGetTargetExpireTime(UINT64 currTime, const SortLinkList *targetSortList);
109 UINT64 OsSortLinkGetNextExpireTime(UINT64 currTime, const SortLinkAttribute *sortLinkHeader);
110 UINT32 OsSortLinkAdjustNodeResponseTime(SortLinkAttribute *head, SortLinkList *node, UINT64 responseTime);
111 
112 #ifdef __cplusplus
113 #if __cplusplus
114 }
115 #endif /* __cplusplus */
116 #endif /* __cplusplus */
117 
118 #endif /* _LOS_SORTLINK_PRI_H */
119