1 /* ----------------------------------------------------------------------------
2 * Copyright (c) Huawei Technologies Co., Ltd. 2018-2019. All rights reserved.
3 * Description: Percpu Private HeadFile
4 * Author: Huawei LiteOS Team
5 * Create: 2018-08-29
6 * Redistribution and use in source and binary forms, with or without modification,
7 * are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
11 * of conditions and the following disclaimer in the documentation and/or other materials
12 * provided with the distribution.
13 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
14 * to endorse or promote products derived from this software without specific prior written
15 * permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
18 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
26 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 * --------------------------------------------------------------------------- */
28
29 #ifndef _LOS_PERCPU_PRI_H
30 #define _LOS_PERCPU_PRI_H
31
32 #include "los_base.h"
33 #include "los_sortlink_pri.h"
34
35 #include "arch/cpu.h"
36
37 #ifdef __cplusplus
38 extern "C" {
39 #endif /* __cplusplus */
40
41 #ifdef LOSCFG_KERNEL_SMP
42 typedef enum {
43 CPU_RUNNING = 0, /* cpu is running */
44 CPU_HALT, /* cpu in the halt */
45 CPU_EXC /* cpu in the exc */
46 } ExcFlag;
47 #endif
48
49 typedef struct {
50 UINT16 head;
51 UINT16 tail;
52 UINT32 free;
53 UINTPTR* buf;
54 } ExpiryList;
55
56 typedef struct {
57 SortLinkAttribute taskSortLink; /* task sort link */
58 #ifdef LOSCFG_BASE_CORE_SWTMR
59 SortLinkAttribute swtmrSortLink; /* swtmr sort link */
60 ExpiryList expiryList; /* swtmr expiry List */
61 #endif
62
63 UINT32 idleTaskId; /* idle task id */
64 UINT32 taskLockCnt; /* task lock flag */
65 UINT32 swtmrHandlerQueue; /* software timer timeout queue id */
66 UINT32 swtmrTaskId; /* software timer task id */
67 #ifndef LOSCFG_SCHED_LATENCY
68 UINT32 schedFlag; /* pending scheduler flag */
69 #endif
70 #ifdef LOSCFG_KERNEL_SMP
71 UINT32 excFlag; /* cpu halt or exc flag */
72 #ifdef LOSCFG_KERNEL_SMP_CALL
73 LOS_DL_LIST funcLink; /* mp function call link */
74 #endif
75 #endif
76 } Percpu;
77
78 /* the kernel per-cpu structure */
79 extern Percpu g_percpu[LOSCFG_KERNEL_CORE_NUM];
80
OsPercpuGet(VOID)81 STATIC INLINE Percpu *OsPercpuGet(VOID)
82 {
83 return &g_percpu[ArchCurrCpuid()];
84 }
85
OsPercpuGetByID(UINT32 cpuid)86 STATIC INLINE Percpu *OsPercpuGetByID(UINT32 cpuid)
87 {
88 return &g_percpu[cpuid];
89 }
90
91 #ifdef __cplusplus
92 }
93 #endif /* __cplusplus */
94
95 #endif /* _LOS_PERCPU_PRI_H */
96