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annotate packages/kernel/current/tests/smp.cxx @ 3188:cb5a35f3fda4

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Include CYGHWR_MEMORY_LAYOUT_H in order to effectively test memory size. Bug reported and fix suggested by Bernd Edlinger. [Bugzilla 1001650]
author vae
date Thu, 04 Oct 2012 07:40:45 +0000
parents 74dbf4c3f2e1
children
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1 //==========================================================================
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2 //
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3 // smp.cxx
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4 //
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5 // SMP tests
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6 //
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7 //==========================================================================
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8 // ####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //==========================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): nickg
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43 // Contributors: nickg
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44 // Date: 2001-06-18
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45 // Description: Some basic SMP tests.
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46 //
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47 //####DESCRIPTIONEND####
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48 //==========================================================================
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49
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50 #include <pkgconf/kernel.h>
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51 #include <pkgconf/hal.h>
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52
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53 #if 1
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54 #include <cyg/kernel/sched.hxx>
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55 #include <cyg/kernel/thread.hxx>
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56 #include <cyg/kernel/thread.inl>
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57 #include <cyg/kernel/mutex.hxx>
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58 #include <cyg/kernel/sema.hxx>
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59 #include <cyg/kernel/sched.inl>
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60 #include <cyg/kernel/clock.hxx>
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61 #include <cyg/kernel/clock.inl>
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62 #endif
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63
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64 #include <cyg/kernel/kapi.h>
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65
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66 #include <cyg/infra/testcase.h>
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67 #include <cyg/infra/diag.h>
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68
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69 //==========================================================================
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70
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71 #if defined(CYGPKG_KERNEL_SMP_SUPPORT) && \
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72 defined(CYGFUN_KERNEL_API_C) && \
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73 defined(CYGSEM_KERNEL_SCHED_MLQUEUE) && \
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74 defined(CYGVAR_KERNEL_COUNTERS_CLOCK) && \
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75 !defined(CYGPKG_HAL_I386_LINUX) && \
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76 !defined(CYGDBG_INFRA_DIAG_USE_DEVICE) && \
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77 (CYGNUM_KERNEL_SCHED_PRIORITIES > 12)
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78
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79 //==========================================================================
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80
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81 #define NTHREADS 1
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82 #include "testaux.hxx"
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83
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84 #define STACK_SIZE CYGNUM_HAL_STACK_SIZE_TYPICAL
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85
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86 #define NTHREADS_MAX (CYGNUM_KERNEL_CPU_MAX*3)
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87
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88 static int ncpus = CYGNUM_KERNEL_CPU_MAX;
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89 static int nthread = NTHREADS_MAX;
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90
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91 static char stacks[NTHREADS_MAX][STACK_SIZE];
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92 static cyg_thread test_threads[NTHREADS_MAX];
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93 static cyg_handle_t threads[NTHREADS_MAX];
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94
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95 static volatile cyg_uint32 cpu_run[CYGNUM_KERNEL_CPU_MAX];
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96 static volatile int failed = false;
182
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97 static volatile cyg_uint32 cpu_thread[CYGNUM_KERNEL_CPU_MAX];
177
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98
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99 static volatile cyg_uint32 slicerun[NTHREADS_MAX][CYGNUM_KERNEL_CPU_MAX];
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100
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101
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102 static cyg_mutex_t mx;
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103
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104
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105 //==========================================================================
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106 // Compute a name for a thread
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107 char *
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108 thread_name(char *basename, int indx) {
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109 return "<<NULL>>"; // Not currently used
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110 }
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111
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112 //==========================================================================
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113
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114 void
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115 test_thread_cpu(CYG_ADDRESS id)
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116 {
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117 for(;;)
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118 cpu_run[CYG_KERNEL_CPU_THIS()] = true;
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119 }
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120
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121 //==========================================================================
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122 // First test: just run as many threads as CPUs and check that we
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123 // get to run on each CPU.
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124
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125 void run_smp_test_cpus()
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126 {
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127 int i;
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128
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129 CYG_TEST_INFO( "CPU Test: Check CPUs functional");
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130
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131 // Init flags.
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132 for (i = 0; i < ncpus; i++)
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133 cpu_run[i] = false;
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134
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135 // Set my priority higher than any I plan to create
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136 cyg_thread_set_priority(cyg_thread_self(), 2);
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137
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138 for (i = 0; i < ncpus; i++) {
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139 cyg_thread_create(10, // Priority - just a number
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140 test_thread_cpu, // entry
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141 i, // index
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142 thread_name("thread", i), // Name
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143 &stacks[i][0], // Stack
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144 STACK_SIZE, // Size
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145 &threads[i], // Handle
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146 &test_threads[i] // Thread data structure
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147 );
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148 cyg_thread_resume( threads[i]);
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149 }
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150
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151 // Just wait a while, until the threads have all run for a bit.
182
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152 cyg_thread_delay( 10 );
177
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153
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154 // Delete all the threads
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155 for (i = 0; i < ncpus; i++) {
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156 cyg_thread_delete(threads[i]);
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157 }
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158
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159 // And check that a thread ran on each CPU
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160 for (i = 0; i < ncpus; i++) {
182
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161 // CYG_TEST_CHECK( cpu_run[i], "CPU didn't run");
177
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162 if( !cpu_run[i] )
182
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163 {
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164 CYG_TEST_INFO( "CPU didn't run" );
177
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165 failed++;
182
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166 }
177
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167 }
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168
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169 CYG_TEST_INFO( "CPU Test: done");
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170 }
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171
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172
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173 //==========================================================================
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174
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175 void
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176 test_thread_pri(CYG_ADDRESS id)
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177 {
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178 for(;;)
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179 {
182
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180 cpu_thread[CYG_KERNEL_CPU_THIS()] = id;
177
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181 }
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182 }
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183
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184 //==========================================================================
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185 // Second test: Run a thread on each CPU and then by manipulating the
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186 // priorities, get the current thread to migrate to each CPU in turn.
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187
182
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188
177
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189 void run_smp_test_pri()
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190 {
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191 int i;
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192
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193 CYG_TEST_INFO( "Pri Test: Check set_priority functionality");
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194
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195 // Init flags.
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196 for (i = 0; i < ncpus; i++)
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197 cpu_run[i] = false;
182
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198
177
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199 // Set my priority higher than any I plan to creat
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200 cyg_thread_set_priority(cyg_thread_self(), 2);
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201
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202 for (i = 0; i < ncpus; i++) {
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203 cyg_thread_create(10, // Priority - just a number
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204 test_thread_pri, // entry
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205 i, // index
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206 thread_name("thread", i), // Name
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207 &stacks[i][0], // Stack
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208 STACK_SIZE, // Size
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209 &threads[i], // Handle
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210 &test_threads[i] // Thread data structure
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211 );
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212 cyg_thread_resume( threads[i]);
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213 }
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214
182
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215 cyg_thread_delay( 2 );
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216
177
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217 cyg_handle_t cthread = threads[0];
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218 cyg_thread_set_priority(cthread, 25);
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219
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220 // Just wait a while, until the threads have all run for a bit.
182
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221 cyg_thread_delay( 2 );
177
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222
182
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223 for (i = 0; i < ncpus*500; i++)
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224 {
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225 HAL_SMP_CPU_TYPE cpu = i % CYG_KERNEL_CPU_COUNT();
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226
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227 if( cpu != CYG_KERNEL_CPU_THIS() )
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228 {
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229 // At this point we have the current thread running on a
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230 // CPU at priority 2, ncpus-1 threads running at priority
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231 // 10 and the last thread (cthread) in the run queue at
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232 // priority 25.
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233
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234 // Pick a thread on a different CPU
182
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235 cyg_handle_t dthread;
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236
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237 do
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238 {
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239 dthread = threads[cpu_thread[cpu]];
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240 } while( dthread == cthread );
177
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241
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242 // Change the priority of the victim thread to 20. It is
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243 // still higher priority than cthread so it will continue
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244 // running.
182
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245
177
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246 cyg_thread_set_priority(dthread, 20);
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247
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248 // Now change our priority to 15. We are still higher
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249 // priority that cthread so we will still run.
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250
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251 cyg_thread_set_priority(cyg_thread_self(), 15);
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252
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253 // Finally change the priority of cthread to 10. This will
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254 // cause it to preempt us on the current CPU. In turn we
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255 // will preempt dthread on its CPU.
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256
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257 // NOTE: This relies somewhat on the SMP scheduler doing
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258 // what we expect here. Specifically, that it will preempt
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259 // the current thread with cthread locally. A more
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260 // sophisticated scheduler might decide that the most
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261 // efficient thing to do is to preempt dthread with
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262 // cthread remotely, leaving the current thread where it
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263 // is. If we ever bother to implement this, then this test
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264 // will need to change.
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265
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266 cyg_thread_set_priority(cthread, 10);
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267
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268 // Spin here a while until the scheduler sorts itself out.
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269
182
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270 for( int j = 0; j < 100000; j++ );
177
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271
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272 // Indicate that we have run on this CPU
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273 cpu_run[CYG_KERNEL_CPU_THIS()]++;
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274
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275 // Restore our priority to 2 and depress dthread to 25 and
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276 // make it the new cthread.
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277
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278 cyg_thread_set_priority(cyg_thread_self(), 2);
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279 cyg_thread_set_priority(dthread, 25);
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280 cthread = dthread;
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281 }
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282 }
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283
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284
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285 // Delete all the threads
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286 for (i = 0; i < ncpus; i++) {
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287 cyg_thread_delete(threads[i]);
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288 }
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289
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290 // And check that a thread ran on each CPU
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291 for (i = 0; i < ncpus; i++) {
182
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292 // CYG_TEST_CHECK( cpu_run[i], "CPU didn't run");
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293 if( !cpu_run[i] )
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294 {
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295 CYG_TEST_INFO( "CPU didn't run" );
177
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296 failed++;
182
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297 }
177
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298 }
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299
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300 CYG_TEST_INFO( "PRI Test: done");
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301 }
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302
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303 //==========================================================================
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304
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305 void
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306 test_thread_timeslice(CYG_ADDRESS id)
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307 {
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308 for(;;)
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309 slicerun[id][CYG_KERNEL_CPU_THIS()]++;
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310 }
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311
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312 //==========================================================================
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313 // First test: just run as many threads as CPUs and check that we
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314 // get to run on each CPU.
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315
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316 void run_smp_test_timeslice()
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317 {
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318 int i;
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319
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320 CYG_TEST_INFO( "Timeslice Test: Check timeslicing works");
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321
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322 // Init flags.
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323 for (i = 0; i < nthread; i++)
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324 for( int j = 0; j < ncpus; j++ )
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325 slicerun[i][j] = 0;
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326
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327 // Set my priority higher than any I plan to create
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328 cyg_thread_set_priority(cyg_thread_self(), 2);
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329
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330 for (i = 0; i < nthread; i++) {
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331 cyg_thread_create(10, // Priority - just a number
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332 test_thread_timeslice, // entry
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333 i, // index
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334 thread_name("thread", i), // Name
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335 &stacks[i][0], // Stack
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336 STACK_SIZE, // Size
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337 &threads[i], // Handle
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338 &test_threads[i] // Thread data structure
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339 );
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340 cyg_thread_resume( threads[i]);
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341 }
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342
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343 // Just wait a while, until the threads have all run for a bit.
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344 cyg_thread_delay( 200 );
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345
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346 // Delete all the threads
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347 for (i = 0; i < nthread; i++) {
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348 cyg_thread_suspend(threads[i]);
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349 }
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350
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351
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352 // And check that a thread ran on each CPU
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353
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354 cyg_uint32 cpu_total[ncpus];
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355 cyg_uint32 cpu_threads[ncpus];
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356 cyg_uint32 thread_total[nthread];
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357
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358 diag_printf(" Thread ");
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359 for( int j = 0; j < ncpus; j++ )
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360 {
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361 cpu_total[j] = 0;
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362 cpu_threads[j] = 0;
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363 diag_printf(" CPU %2d",j);
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364 }
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365 diag_printf(" Total\n");
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366 for (i = 0; i < nthread; i++)
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367 {
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368 thread_total[i] = 0;
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369 diag_printf(" %2d ",i);
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370 for( int j = 0; j < ncpus; j++ )
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371 {
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372 thread_total[i] += slicerun[i][j];
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373 cpu_total[j] += slicerun[i][j];
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374 if( slicerun[i][j] > 0 )
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375 cpu_threads[j]++;
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376 diag_printf(" %8d",slicerun[i][j]);
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377 }
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378 diag_printf("%8d\n",thread_total[i]);
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379 }
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380 diag_printf(" Total ");
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381 for( int j = 0; j < ncpus; j++ )
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382 diag_printf(" %8d",cpu_total[j]);
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383 diag_printf("\n");
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384 diag_printf("Threads ");
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385 for( int j = 0; j < ncpus; j++ )
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386 {
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387 diag_printf(" %8d",cpu_threads[j]);
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388 if( cpu_threads[j] < 2 )
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389 failed++;
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390 }
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391 diag_printf("\n");
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392
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393 // Delete all the threads
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394 for (i = 0; i < nthread; i++) {
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395 cyg_thread_delete(threads[i]);
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396 }
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397
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398 CYG_TEST_INFO( "Timeslice Test: done");
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399 }
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400
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401
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402 //==========================================================================
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403
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404 void
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405 run_smp_tests(CYG_ADDRESS id)
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406 {
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407 cyg_mutex_init( &mx );
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408
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409 for( int i = 0; i < 100; i++ )
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410 {
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411 run_smp_test_cpus();
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412 run_smp_test_pri();
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413 run_smp_test_timeslice();
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414 }
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415
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416 if( failed )
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417 CYG_TEST_FAIL_FINISH("SMP tests failed\n");
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418
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419 CYG_TEST_PASS_FINISH("SMP tests OK");
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420 }
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421
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422 //==========================================================================
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423
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424 void smp_main( void )
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425 {
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426 CYG_TEST_INIT();
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427
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428 // Work out how many CPUs we actually have.
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429 ncpus = CYG_KERNEL_CPU_COUNT();
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430
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431 new_thread(run_smp_tests, 0);
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432
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433 cyg_scheduler_start();
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434 }
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435
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436 //==========================================================================
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437
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438 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
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439 externC void
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440 cyg_hal_invoke_constructors();
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441 #endif
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442
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443 externC void
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444 cyg_start( void )
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445 {
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446 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
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447 cyg_hal_invoke_constructors();
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448 #endif
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449 smp_main();
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450 }
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451
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452 //==========================================================================
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453
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454 #else // CYGPKG_KERNEL_SMP_SUPPORT etc.
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455
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456 externC void
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457 cyg_start( void )
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458 {
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459 CYG_TEST_INIT();
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460 CYG_TEST_INFO("SMP test requires:\n"
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461 "CYGPKG_KERNEL_SMP_SUPPORT &&\n"
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462 "CYGFUN_KERNEL_API_C && \n"
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463 "CYGSEM_KERNEL_SCHED_MLQUEUE &&\n"
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464 "CYGVAR_KERNEL_COUNTERS_CLOCK &&\n"
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465 "!CYGPKG_HAL_I386_LINUX &&\n"
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466 "!CYGDBG_INFRA_DIAG_USE_DEVICE &&\n"
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467 "(CYGNUM_KERNEL_SCHED_PRIORITIES > 12)\n");
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468 CYG_TEST_NA("SMP test requirements");
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469 }
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470 #endif // CYGPKG_KERNEL_SMP_SUPPORT etc.
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471
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472 //==========================================================================
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473 // EOF tm_basic.cxx