1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Deterministic Priority Affinity SMP Scheduler Implementation |
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5 | * |
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6 | * @ingroup ScoreSchedulerPriorityAffinitySMP |
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7 | */ |
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8 | |
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9 | /* |
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10 | * COPYRIGHT (c) 2014. |
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11 | * On-Line Applications Research Corporation (OAR). |
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12 | * |
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13 | * The license and distribution terms for this file may be |
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14 | * found in the file LICENSE in this distribution or at |
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15 | * http://www.rtems.org/license/LICENSE. |
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16 | */ |
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17 | |
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18 | #if HAVE_CONFIG_H |
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19 | #include "config.h" |
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20 | #endif |
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21 | |
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22 | #include <rtems/score/schedulerpriorityaffinitysmp.h> |
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23 | #include <rtems/score/schedulerpriorityimpl.h> |
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24 | #include <rtems/score/schedulersmpimpl.h> |
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25 | #include <rtems/score/wkspace.h> |
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26 | #include <rtems/score/cpusetimpl.h> |
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27 | |
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28 | static Scheduler_priority_affinity_SMP_Node * |
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29 | _Scheduler_priority_affinity_Node_get( Thread_Control *thread ) |
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30 | { |
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31 | return ( Scheduler_priority_affinity_SMP_Node * ) |
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32 | _Scheduler_Node_get( thread ); |
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33 | } |
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34 | |
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35 | bool _Scheduler_priority_affinity_SMP_Allocate( |
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36 | const Scheduler_Control *scheduler, |
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37 | Thread_Control *the_thread |
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38 | ) |
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39 | { |
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40 | Scheduler_priority_affinity_SMP_Node *node = |
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41 | _Scheduler_priority_affinity_Node_get( the_thread ); |
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42 | |
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43 | _Scheduler_SMP_Node_initialize( &node->Base.Base ); |
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44 | |
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45 | node->Affinity = *_CPU_set_Default(); |
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46 | node->Affinity.set = &node->Affinity.preallocated; |
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47 | |
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48 | return true; |
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49 | } |
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50 | |
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51 | bool _Scheduler_priority_affinity_SMP_Get_affinity( |
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52 | const Scheduler_Control *scheduler, |
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53 | Thread_Control *thread, |
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54 | size_t cpusetsize, |
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55 | cpu_set_t *cpuset |
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56 | ) |
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57 | { |
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58 | Scheduler_priority_affinity_SMP_Node *node = |
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59 | _Scheduler_priority_affinity_Node_get(thread); |
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60 | |
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61 | (void) scheduler; |
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62 | |
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63 | if ( node->Affinity.setsize != cpusetsize ) { |
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64 | return false; |
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65 | } |
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66 | |
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67 | CPU_COPY( cpuset, node->Affinity.set ); |
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68 | return true; |
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69 | } |
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70 | |
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71 | bool _Scheduler_priority_affinity_SMP_Set_affinity( |
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72 | const Scheduler_Control *scheduler, |
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73 | Thread_Control *thread, |
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74 | size_t cpusetsize, |
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75 | cpu_set_t *cpuset |
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76 | ) |
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77 | { |
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78 | Scheduler_priority_affinity_SMP_Node *node = |
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79 | _Scheduler_priority_affinity_Node_get(thread); |
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80 | |
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81 | (void) scheduler; |
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82 | |
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83 | if ( ! _CPU_set_Is_valid( cpuset, cpusetsize ) ) { |
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84 | return false; |
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85 | } |
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86 | |
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87 | CPU_COPY( node->Affinity.set, cpuset ); |
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88 | |
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89 | return true; |
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90 | } |
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