1 | /* |
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2 | * COPYRIGHT (c) 2014. |
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3 | * On-Line Applications Research Corporation (OAR). |
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4 | * |
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5 | * The license and distribution terms for this file may be |
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6 | * found in the file LICENSE in this distribution or at |
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7 | * http://www.rtems.org/license/LICENSE. |
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8 | */ |
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9 | |
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10 | /* |
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11 | * Use the Init task to walk the higher priority TA1 across all the cores. |
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12 | */ |
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13 | |
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14 | #ifdef HAVE_CONFIG_H |
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15 | #include "config.h" |
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16 | #endif |
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17 | |
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18 | #include <rtems.h> |
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19 | |
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20 | #include "tmacros.h" |
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21 | |
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22 | const char rtems_test_name[] = "SMPSCHEDAFFINITY 4"; |
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23 | |
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24 | #define NUM_CPUS 4 |
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25 | #define TASK_COUNT 2 |
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26 | |
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27 | struct task_data_t { |
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28 | rtems_id id; |
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29 | int expected_cpu; |
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30 | bool ran; |
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31 | int actual_cpu; |
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32 | }; |
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33 | |
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34 | struct task_data_t task_data = { |
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35 | 0x0, 2, false, 0xff |
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36 | }; |
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37 | |
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38 | rtems_id task_sem; |
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39 | |
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40 | static void task(rtems_task_argument arg); |
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41 | |
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42 | static void test_delay(int ticks) |
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43 | { |
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44 | rtems_interval start, stop; |
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45 | start = rtems_clock_get_ticks_since_boot(); |
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46 | do { |
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47 | stop = rtems_clock_get_ticks_since_boot(); |
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48 | } while ( (stop - start) < ticks ); |
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49 | } |
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50 | |
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51 | /* |
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52 | * Task that continually sets the cpu and |
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53 | * run indicators without blocking. |
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54 | */ |
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55 | static void task(rtems_task_argument arg) |
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56 | { |
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57 | rtems_status_code sc; |
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58 | |
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59 | while (true) { |
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60 | sc = rtems_semaphore_obtain (task_sem, RTEMS_NO_WAIT, 0); |
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61 | if (sc == RTEMS_SUCCESSFUL) { |
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62 | task_data.ran = true; |
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63 | task_data.actual_cpu = rtems_scheduler_get_processor(); |
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64 | rtems_semaphore_release(task_sem); |
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65 | } |
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66 | } |
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67 | } |
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68 | |
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69 | static void test(void) |
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70 | { |
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71 | rtems_status_code sc; |
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72 | uint32_t cpu_count; |
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73 | int cpu; |
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74 | int i; |
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75 | cpu_set_t cpuset; |
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76 | |
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77 | /* Get the number of processors that we are using. */ |
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78 | cpu_count = rtems_get_processor_count(); |
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79 | if (cpu_count < 2) { |
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80 | printf("Error: Test requires at least 2 cpus\n"); |
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81 | return; |
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82 | } |
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83 | |
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84 | printf("Create Semaphore\n"); |
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85 | sc = rtems_semaphore_create( |
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86 | rtems_build_name('S', 'E', 'M', '0'), |
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87 | 1, /* initial count = 1 */ |
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88 | RTEMS_BINARY_SEMAPHORE | |
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89 | RTEMS_PRIORITY | |
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90 | RTEMS_PRIORITY_CEILING, |
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91 | 0, |
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92 | &task_sem |
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93 | ); |
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94 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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95 | |
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96 | /* |
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97 | * Create and start TA1 at a higher priority |
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98 | * than the init task. |
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99 | */ |
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100 | sc = rtems_task_create( |
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101 | rtems_build_name('T', 'A', '0', '1'), |
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102 | 4, |
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103 | RTEMS_MINIMUM_STACK_SIZE, |
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104 | RTEMS_DEFAULT_MODES, |
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105 | RTEMS_DEFAULT_ATTRIBUTES, |
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106 | &task_data.id |
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107 | ); |
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108 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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109 | |
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110 | printf("Start TA1\n"); |
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111 | sc = rtems_task_start( task_data.id, task, 0 ); |
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112 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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113 | |
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114 | /* |
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115 | * Verify the Init task is running on the max core. |
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116 | */ |
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117 | printf("Verify Init task is on cpu %" PRIu32 "\n",cpu_count-1); |
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118 | cpu = rtems_scheduler_get_processor(); |
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119 | rtems_test_assert(cpu == (cpu_count-1)); |
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120 | |
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121 | /* Walk TA1 across all of the cores */ |
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122 | for(i=0; i < cpu_count; i++) { |
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123 | /* Set the Affinity to core i */ |
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124 | CPU_ZERO(&cpuset); |
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125 | CPU_SET(i, &cpuset); |
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126 | printf("Set Affinity TA1 to cpu %d\n", i); |
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127 | sc = rtems_task_set_affinity( task_data.id, sizeof(cpuset), &cpuset ); |
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128 | rtems_test_assert(sc == RTEMS_SUCCESSFUL); |
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129 | |
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130 | /* Wait a bit to be sure it has switched cores then clear the task data */ |
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131 | test_delay(50); |
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132 | while( rtems_semaphore_obtain (task_sem, RTEMS_NO_WAIT, 0) != RTEMS_SUCCESSFUL ); |
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133 | task_data.ran = false; |
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134 | task_data.expected_cpu = i; |
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135 | rtems_semaphore_release(task_sem); |
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136 | test_delay(50); |
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137 | |
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138 | /* Verify the task ran on core i */ |
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139 | while( rtems_semaphore_obtain (task_sem, RTEMS_NO_WAIT, 0) != RTEMS_SUCCESSFUL ); |
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140 | if (task_data.ran != true) |
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141 | printf("Error: TA01 never ran.\n"); |
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142 | else |
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143 | printf( |
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144 | "TA1 expected cpu: %d actual cpu %d\n", |
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145 | task_data.expected_cpu, |
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146 | task_data.actual_cpu |
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147 | ); |
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148 | rtems_test_assert(task_data.ran == true); |
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149 | rtems_test_assert(task_data.expected_cpu == task_data.actual_cpu); |
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150 | rtems_semaphore_release(task_sem); |
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151 | } |
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152 | } |
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153 | |
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154 | static void Init(rtems_task_argument arg) |
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155 | { |
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156 | TEST_BEGIN(); |
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157 | |
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158 | test(); |
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159 | |
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160 | TEST_END(); |
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161 | rtems_test_exit(0); |
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162 | } |
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163 | |
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164 | #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER |
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165 | #define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER |
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166 | |
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167 | #define CONFIGURE_SCHEDULER_PRIORITY_AFFINITY_SMP |
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168 | |
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169 | #define CONFIGURE_MAXIMUM_SEMAPHORES 1 |
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170 | |
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171 | #define CONFIGURE_MAXIMUM_PROCESSORS NUM_CPUS |
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172 | |
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173 | #define CONFIGURE_MAXIMUM_TASKS TASK_COUNT |
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174 | |
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175 | #define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION |
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176 | |
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177 | #define CONFIGURE_INIT_TASK_PRIORITY 8 |
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178 | #define CONFIGURE_RTEMS_INIT_TASKS_TABLE |
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179 | |
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180 | #define CONFIGURE_INIT |
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181 | |
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182 | #include <rtems/confdefs.h> |
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