1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/**
* @file
*
* @brief EDF SMP Scheduler API
*
* @ingroup RTEMSScoreSchedulerSMPEDF
*/
/*
* Copyright (c) 2017, 2018 embedded brains GmbH.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_SCORE_SCHEDULEREDFSMP_H
#define _RTEMS_SCORE_SCHEDULEREDFSMP_H
#include <rtems/score/scheduler.h>
#include <rtems/score/scheduleredf.h>
#include <rtems/score/schedulersmp.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup RTEMSScoreSchedulerSMPEDF EDF Priority SMP Scheduler
*
* @ingroup RTEMSScoreSchedulerSMP
*
* @{
*/
typedef struct {
Scheduler_SMP_Node Base;
/**
* @brief Generation number to ensure FIFO/LIFO order for threads of the same
* priority across different ready queues.
*/
int64_t generation;
/**
* @brief The ready queue index depending on the processor affinity and
* pinning of the thread.
*
* The ready queue index zero is used for threads with a one-to-all thread
* processor affinity. Threads with a one-to-one processor affinity use the
* processor index plus one as the ready queue index.
*/
uint8_t ready_queue_index;
/**
* @brief Ready queue index according to thread affinity.
*/
uint8_t affinity_ready_queue_index;
/**
* @brief Ready queue index according to thread pinning.
*/
uint8_t pinning_ready_queue_index;
} Scheduler_EDF_SMP_Node;
typedef struct {
/**
* @brief Chain node for Scheduler_SMP_Context::Affine_queues.
*/
Chain_Node Node;
/**
* @brief The ready threads of the corresponding affinity.
*/
RBTree_Control Queue;
/**
* @brief The scheduled thread of the corresponding processor.
*/
Scheduler_EDF_SMP_Node *scheduled;
} Scheduler_EDF_SMP_Ready_queue;
typedef struct {
Scheduler_SMP_Context Base;
/**
* @brief Current generation for LIFO (index 0) and FIFO (index 1) ordering.
*/
int64_t generations[ 2 ];
/**
* @brief Chain of ready queues with affine threads to determine the highest
* priority ready thread.
*/
Chain_Control Affine_queues;
/**
* @brief A table with ready queues.
*
* The index zero queue is used for threads with a one-to-all processor
* affinity. Index one corresponds to processor index zero, and so on.
*/
Scheduler_EDF_SMP_Ready_queue Ready[ RTEMS_ZERO_LENGTH_ARRAY ];
} Scheduler_EDF_SMP_Context;
#define SCHEDULER_EDF_SMP_ENTRY_POINTS \
{ \
_Scheduler_EDF_SMP_Initialize, \
_Scheduler_default_Schedule, \
_Scheduler_EDF_SMP_Yield, \
_Scheduler_EDF_SMP_Block, \
_Scheduler_EDF_SMP_Unblock, \
_Scheduler_EDF_SMP_Update_priority, \
_Scheduler_EDF_Map_priority, \
_Scheduler_EDF_Unmap_priority, \
_Scheduler_EDF_SMP_Ask_for_help, \
_Scheduler_EDF_SMP_Reconsider_help_request, \
_Scheduler_EDF_SMP_Withdraw_node, \
_Scheduler_EDF_SMP_Pin, \
_Scheduler_EDF_SMP_Unpin, \
_Scheduler_EDF_SMP_Add_processor, \
_Scheduler_EDF_SMP_Remove_processor, \
_Scheduler_EDF_SMP_Node_initialize, \
_Scheduler_default_Node_destroy, \
_Scheduler_EDF_Release_job, \
_Scheduler_EDF_Cancel_job, \
_Scheduler_default_Tick, \
_Scheduler_EDF_SMP_Start_idle, \
_Scheduler_EDF_SMP_Set_affinity \
}
void _Scheduler_EDF_SMP_Initialize( const Scheduler_Control *scheduler );
void _Scheduler_EDF_SMP_Node_initialize(
const Scheduler_Control *scheduler,
Scheduler_Node *node,
Thread_Control *the_thread,
Priority_Control priority
);
void _Scheduler_EDF_SMP_Block(
const Scheduler_Control *scheduler,
Thread_Control *thread,
Scheduler_Node *node
);
void _Scheduler_EDF_SMP_Unblock(
const Scheduler_Control *scheduler,
Thread_Control *thread,
Scheduler_Node *node
);
void _Scheduler_EDF_SMP_Update_priority(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
);
bool _Scheduler_EDF_SMP_Ask_for_help(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
);
void _Scheduler_EDF_SMP_Reconsider_help_request(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
);
void _Scheduler_EDF_SMP_Withdraw_node(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node,
Thread_Scheduler_state next_state
);
void _Scheduler_EDF_SMP_Pin(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node,
struct Per_CPU_Control *cpu
);
void _Scheduler_EDF_SMP_Unpin(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node,
struct Per_CPU_Control *cpu
);
void _Scheduler_EDF_SMP_Add_processor(
const Scheduler_Control *scheduler,
Thread_Control *idle
);
Thread_Control *_Scheduler_EDF_SMP_Remove_processor(
const Scheduler_Control *scheduler,
struct Per_CPU_Control *cpu
);
void _Scheduler_EDF_SMP_Yield(
const Scheduler_Control *scheduler,
Thread_Control *thread,
Scheduler_Node *node
);
void _Scheduler_EDF_SMP_Start_idle(
const Scheduler_Control *scheduler,
Thread_Control *idle,
struct Per_CPU_Control *cpu
);
bool _Scheduler_EDF_SMP_Set_affinity(
const Scheduler_Control *scheduler,
Thread_Control *thread,
Scheduler_Node *node,
const Processor_mask *affinity
);
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* _RTEMS_SCORE_SCHEDULEREDFSMP_H */
|
