1 | /* |
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2 | * kcm.c - Kernel Cache Manager implementation. |
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3 | * |
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4 | * Author Alain Greiner (2016,2017,2018,2019) |
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5 | * |
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6 | * Copyright (c) UPMC Sorbonne Universites |
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7 | * |
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8 | * This file is part of ALMOS-MKH. |
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9 | * |
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10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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11 | * under the terms of the GNU General Public License as published by |
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12 | * the Free Software Foundation; version 2.0 of the License. |
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13 | * |
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14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 | * General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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22 | */ |
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23 | |
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24 | #include <kernel_config.h> |
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25 | #include <hal_kernel_types.h> |
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26 | #include <hal_special.h> |
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27 | #include <busylock.h> |
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28 | #include <list.h> |
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29 | #include <printk.h> |
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30 | #include <bits.h> |
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31 | #include <ppm.h> |
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32 | #include <thread.h> |
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33 | #include <page.h> |
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34 | #include <cluster.h> |
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35 | #include <kmem.h> |
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36 | #include <kcm.h> |
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37 | |
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38 | |
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39 | ///////////////////////////////////////////////////////////////////////////////////// |
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40 | // Local access functions |
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41 | ///////////////////////////////////////////////////////////////////////////////////// |
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42 | |
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43 | ////////////////////////////////////////////////////////////////////////////////////// |
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44 | // This static function must be called by a local thread. |
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45 | // It returns a pointer on a block allocated from a non-full kcm_page. |
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46 | // It makes a panic if no block is available in selected page. |
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47 | // It changes the page status as required. |
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48 | ////////////////////////////////////////////////////////////////////////////////////// |
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49 | // @ kcm : pointer on KCM allocator. |
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50 | // @ kcm_page : pointer on a non-full kcm_page. |
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51 | // @ return pointer on allocated block. |
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52 | ///////////////////////////////////////////////////////////////////////////////////// |
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53 | static void * __attribute__((noinline)) kcm_get_block( kcm_t * kcm, |
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54 | kcm_page_t * kcm_page ) |
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55 | { |
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56 | // initialise variables |
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57 | uint32_t size = 1 << kcm->order; |
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58 | uint32_t max = kcm->max_blocks; |
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59 | uint32_t count = kcm_page->count; |
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60 | uint64_t status = kcm_page->status; |
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61 | |
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62 | assert( (count < max) , "kcm_page should not be full" ); |
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63 | |
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64 | uint32_t index = 1; |
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65 | uint64_t mask = (uint64_t)0x2; |
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66 | uint32_t found = 0; |
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67 | |
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68 | // allocate first free block in kcm_page, update status, |
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69 | // and count , compute index of allocated block in kcm_page |
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70 | while( index <= max ) |
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71 | { |
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72 | if( (status & mask) == 0 ) // block non allocated |
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73 | { |
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74 | kcm_page->status = status | mask; |
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75 | kcm_page->count = count + 1; |
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76 | found = 1; |
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77 | |
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78 | break; |
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79 | } |
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80 | |
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81 | index++; |
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82 | mask <<= 1; |
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83 | } |
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84 | |
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85 | // change the page list if almost full |
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86 | if( count == max-1 ) |
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87 | { |
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88 | list_unlink( &kcm_page->list); |
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89 | kcm->active_pages_nr--; |
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90 | |
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91 | list_add_first( &kcm->full_root , &kcm_page->list ); |
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92 | kcm->full_pages_nr ++; |
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93 | } |
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94 | |
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95 | // compute return pointer |
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96 | void * ptr = (void *)((intptr_t)kcm_page + (index * size) ); |
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97 | |
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98 | #if (DEBUG_KCM & 1) |
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99 | thread_t * this = CURRENT_THREAD; |
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100 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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101 | if( DEBUG_KCM < cycle ) |
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102 | printk("\n[%s] thread[%x,%x] allocated block %x in page %x / size %d / count %d / cycle %d\n", |
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103 | __FUNCTION__, this->process->pid, this->trdid, ptr, kcm_page, size, count + 1, cycle ); |
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104 | #endif |
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105 | |
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106 | return ptr; |
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107 | |
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108 | } // end kcm_get_block() |
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109 | |
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110 | ///////////////////////////////////////////////////////////////////////////////////// |
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111 | // This private static function must be called by a local thread. |
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112 | // It releases a previously allocated block to the relevant kcm_page. |
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113 | // It makes a panic if the released block is not allocated in this page. |
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114 | // It changes the kcm_page status as required. |
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115 | ///////////////////////////////////////////////////////////////////////////////////// |
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116 | // @ kcm : pointer on kcm allocator. |
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117 | // @ kcm_page : pointer on kcm_page. |
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118 | // @ block_ptr : pointer on block to be released. |
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119 | ///////////////////////////////////////////////////////////////////////////////////// |
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120 | static void __attribute__((noinline)) kcm_put_block ( kcm_t * kcm, |
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121 | kcm_page_t * kcm_page, |
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122 | void * block_ptr ) |
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123 | { |
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124 | // initialise variables |
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125 | uint32_t max = kcm->max_blocks; |
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126 | uint32_t size = 1 << kcm->order; |
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127 | uint32_t count = kcm_page->count; |
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128 | uint64_t status = kcm_page->status; |
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129 | |
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130 | // compute block index from block pointer |
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131 | uint32_t index = ((intptr_t)block_ptr - (intptr_t)kcm_page) / size; |
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132 | |
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133 | // compute mask in bit vector |
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134 | uint64_t mask = ((uint64_t)0x1) << index; |
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135 | |
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136 | assert( (status & mask) , "released block not allocated : status (%x,%x) / mask(%x,%x)", |
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137 | GET_CXY(status), GET_PTR(status), GET_CXY(mask ), GET_PTR(mask ) ); |
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138 | |
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139 | // update status & count in kcm_page |
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140 | kcm_page->status = status & ~mask; |
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141 | kcm_page->count = count - 1; |
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142 | |
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143 | // change the page mode if page was full |
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144 | if( count == max ) |
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145 | { |
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146 | list_unlink( &kcm_page->list ); |
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147 | kcm->full_pages_nr --; |
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148 | |
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149 | list_add_last( &kcm->active_root, &kcm_page->list ); |
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150 | kcm->active_pages_nr ++; |
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151 | } |
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152 | |
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153 | #if (DEBUG_KCM & 1) |
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154 | thread_t * this = CURRENT_THREAD; |
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155 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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156 | if( DEBUG_KCM < cycle ) |
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157 | printk("\n[%s] thread[%x,%x] released block %x in page %x / size %d / count %d / cycle %d\n", |
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158 | __FUNCTION__, this->process->pid, this->trdid, block_ptr, kcm_page, size, count - 1, cycle ); |
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159 | #endif |
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160 | |
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161 | } // kcm_put_block() |
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162 | |
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163 | ///////////////////////////////////////////////////////////////////////////////////// |
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164 | // This private static function must be called by a local thread. |
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165 | // It returns one non-full kcm_page with te following policy : |
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166 | // - if the "active_list" is non empty, it returns the first "active" page, |
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167 | // without modifying the KCM state. |
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168 | // - if the "active_list" is empty, it allocates a new page fromm PPM, inserts |
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169 | // this page in the active_list, and returns it. |
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170 | ///////////////////////////////////////////////////////////////////////////////////// |
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171 | // @ kcm : local pointer on local KCM allocator. |
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172 | // @ return pointer on a non-full kcm page if success / returns NULL if no memory. |
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173 | ///////////////////////////////////////////////////////////////////////////////////// |
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174 | static kcm_page_t * __attribute__((noinline)) kcm_get_page( kcm_t * kcm ) |
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175 | { |
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176 | kcm_page_t * kcm_page; |
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177 | |
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178 | uint32_t active_pages_nr = kcm->active_pages_nr; |
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179 | |
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180 | if( active_pages_nr > 0 ) // return first active page |
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181 | { |
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182 | kcm_page = LIST_FIRST( &kcm->active_root , kcm_page_t , list ); |
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183 | } |
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184 | else // allocate a new page from PPM |
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185 | { |
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186 | // get one 4 Kbytes page from local PPM |
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187 | page_t * page = ppm_alloc_pages( 0 ); |
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188 | |
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189 | if( page == NULL ) |
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190 | { |
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191 | printk("\n[ERROR] in %s : failed to allocate page in cluster %x\n", |
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192 | __FUNCTION__ , local_cxy ); |
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193 | |
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194 | return NULL; |
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195 | } |
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196 | |
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197 | // get page base address |
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198 | xptr_t base_xp = ppm_page2base( XPTR( local_cxy , page ) ); |
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199 | |
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200 | // get local pointer on kcm_page |
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201 | kcm_page = GET_PTR( base_xp ); |
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202 | |
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203 | // initialize kcm_page descriptor |
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204 | kcm_page->status = 0; |
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205 | kcm_page->count = 0; |
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206 | kcm_page->kcm = kcm; |
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207 | kcm_page->page = page; |
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208 | |
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209 | // introduce new page in KCM active_list |
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210 | list_add_first( &kcm->active_root , &kcm_page->list ); |
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211 | kcm->active_pages_nr ++; |
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212 | } |
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213 | |
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214 | return kcm_page; |
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215 | |
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216 | } // end kcm_get_page() |
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217 | |
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218 | ////////////////////////////// |
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219 | void kcm_init( kcm_t * kcm, |
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220 | uint32_t order) |
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221 | { |
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222 | |
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223 | assert( ((order > 5) && (order < 12)) , "order must be in [6,11]" ); |
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224 | |
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225 | // initialize lock |
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226 | remote_busylock_init( XPTR( local_cxy , &kcm->lock ) , LOCK_KCM_STATE ); |
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227 | |
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228 | // initialize KCM page lists |
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229 | kcm->full_pages_nr = 0; |
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230 | kcm->active_pages_nr = 0; |
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231 | list_root_init( &kcm->full_root ); |
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232 | list_root_init( &kcm->active_root ); |
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233 | |
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234 | // initialize order and max_blocks |
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235 | kcm->order = order; |
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236 | kcm->max_blocks = ( CONFIG_PPM_PAGE_SIZE >> order ) - 1; |
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237 | |
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238 | #if DEBUG_KCM |
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239 | thread_t * this = CURRENT_THREAD; |
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240 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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241 | if( DEBUG_KCM < cycle ) |
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242 | printk("\n[%s] thread[%x,%x] initialised KCM / order %d / max_blocks %d\n", |
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243 | __FUNCTION__, this->process->pid, this->trdid, order, kcm->max_blocks ); |
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244 | #endif |
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245 | |
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246 | } // end kcm_init() |
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247 | |
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248 | /////////////////////////////// |
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249 | void kcm_destroy( kcm_t * kcm ) |
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250 | { |
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251 | kcm_page_t * kcm_page; |
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252 | |
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253 | // build extended pointer on KCM lock |
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254 | xptr_t lock_xp = XPTR( local_cxy , &kcm->lock ); |
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255 | |
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256 | // get KCM lock |
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257 | remote_busylock_acquire( lock_xp ); |
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258 | |
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259 | // release all full pages |
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260 | while( list_is_empty( &kcm->full_root ) == false ) |
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261 | { |
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262 | kcm_page = LIST_FIRST( &kcm->full_root , kcm_page_t , list ); |
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263 | list_unlink( &kcm_page->list ); |
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264 | ppm_free_pages( kcm_page->page ); |
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265 | } |
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266 | |
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267 | // release all empty pages |
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268 | while( list_is_empty( &kcm->active_root ) == false ) |
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269 | { |
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270 | kcm_page = LIST_FIRST( &kcm->active_root , kcm_page_t , list ); |
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271 | list_unlink( &kcm_page->list ); |
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272 | ppm_free_pages( kcm_page->page ); |
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273 | } |
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274 | |
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275 | // release KCM lock |
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276 | remote_busylock_release( lock_xp ); |
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277 | } |
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278 | |
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279 | ////////////////////////////////// |
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280 | void * kcm_alloc( uint32_t order ) |
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281 | { |
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282 | kcm_t * kcm_ptr; |
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283 | kcm_page_t * kcm_page; |
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284 | void * block_ptr; |
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285 | |
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286 | // min block size is 64 bytes |
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287 | if( order < 6 ) order = 6; |
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288 | |
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289 | assert( (order < 12) , "order = %d / must be less than 12" , order ); |
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290 | |
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291 | // get local pointer on relevant KCM allocator |
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292 | kcm_ptr = &LOCAL_CLUSTER->kcm[order - 6]; |
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293 | |
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294 | // build extended pointer on local KCM lock |
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295 | xptr_t lock_xp = XPTR( local_cxy , &kcm_ptr->lock ); |
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296 | |
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297 | // get KCM lock |
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298 | remote_busylock_acquire( lock_xp ); |
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299 | |
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300 | // get a non-full kcm_page |
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301 | kcm_page = kcm_get_page( kcm_ptr ); |
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302 | |
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303 | if( kcm_page == NULL ) |
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304 | { |
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305 | remote_busylock_release( lock_xp ); |
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306 | return NULL; |
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307 | } |
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308 | |
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309 | // get a block from selected active page |
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310 | block_ptr = kcm_get_block( kcm_ptr , kcm_page ); |
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311 | |
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312 | // release lock |
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313 | remote_busylock_release( lock_xp ); |
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314 | |
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315 | #if DEBUG_KCM |
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316 | thread_t * this = CURRENT_THREAD; |
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317 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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318 | if( DEBUG_KCM < cycle ) |
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319 | printk("\n[%s] thread[%x,%x] allocated block %x / order %d / kcm %x / status[%x,%x] / count %d\n", |
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320 | __FUNCTION__, this->process->pid, this->trdid, block_ptr, order, kcm_ptr, |
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321 | GET_CXY(kcm_page->status), GET_PTR(kcm_page->status), kcm_page->count ); |
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322 | #endif |
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323 | |
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324 | return block_ptr; |
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325 | |
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326 | } // end kcm_alloc() |
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327 | |
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328 | ///////////////////////////////// |
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329 | void kcm_free( void * block_ptr ) |
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330 | { |
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331 | kcm_t * kcm_ptr; |
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332 | kcm_page_t * kcm_page; |
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333 | |
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334 | // check argument |
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335 | assert( (block_ptr != NULL) , "block pointer cannot be NULL" ); |
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336 | |
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337 | // get local pointer on KCM page |
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338 | kcm_page = (kcm_page_t *)((intptr_t)block_ptr & ~CONFIG_PPM_PAGE_MASK); |
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339 | |
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340 | // get local pointer on KCM descriptor |
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341 | kcm_ptr = kcm_page->kcm; |
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342 | |
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343 | #if DEBUG_KCM |
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344 | thread_t * this = CURRENT_THREAD; |
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345 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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346 | if( DEBUG_KCM < cycle ) |
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347 | printk("\n[%s] thread[%x,%x] release block %x / order %d / kcm %x / status [%x,%x] / count %d\n", |
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348 | __FUNCTION__, this->process->pid, this->trdid, block_ptr, kcm_ptr->order, kcm_ptr, |
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349 | GET_CXY(kcm_page->status), GET_PTR(kcm_page->status), kcm_page->count ); |
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350 | #endif |
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351 | |
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352 | // build extended pointer on local KCM lock |
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353 | xptr_t lock_xp = XPTR( local_cxy , &kcm_ptr->lock ); |
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354 | |
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355 | // get lock |
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356 | remote_busylock_acquire( lock_xp ); |
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357 | |
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358 | // release block |
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359 | kcm_put_block( kcm_ptr , kcm_page , block_ptr ); |
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360 | |
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361 | // release lock |
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362 | remote_busylock_release( lock_xp ); |
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363 | } |
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364 | |
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365 | ///////////////////////////////////////////////////////////////////////////////////// |
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366 | // Remote access functions |
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367 | ///////////////////////////////////////////////////////////////////////////////////// |
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368 | |
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369 | ///////////////////////////////////////////////////////////////////////////////////// |
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370 | // This static function can be called by any thread running in any cluster. |
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371 | // It returns a local pointer on a block allocated from an non-full kcm_page. |
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372 | // It makes a panic if no block available in selected page. |
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373 | // It changes the page status as required. |
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374 | ///////////////////////////////////////////////////////////////////////////////////// |
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375 | // @ kcm_cxy : remote KCM cluster identidfier. |
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376 | // @ kcm_ptr : local pointer on remote KCM allocator. |
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377 | // @ kcm_page : pointer on active kcm page to use. |
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378 | // @ return a local pointer on the allocated block. |
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379 | ///////////////////////////////////////////////////////////////////////////////////// |
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380 | static void * __attribute__((noinline)) kcm_remote_get_block( cxy_t kcm_cxy, |
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381 | kcm_t * kcm_ptr, |
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382 | kcm_page_t * kcm_page ) |
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383 | { |
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384 | uint32_t order = hal_remote_l32( XPTR( kcm_cxy , &kcm_ptr->order ) ); |
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385 | uint32_t max = hal_remote_l32( XPTR( kcm_cxy , &kcm_ptr->max_blocks ) ); |
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386 | uint32_t count = hal_remote_l32( XPTR( kcm_cxy , &kcm_page->count ) ); |
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387 | uint64_t status = hal_remote_l64( XPTR( kcm_cxy , &kcm_page->status ) ); |
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388 | uint32_t size = 1 << order; |
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389 | |
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390 | assert( (count < max) , "kcm_page should not be full" ); |
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391 | |
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392 | uint32_t index = 1; |
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393 | uint64_t mask = (uint64_t)0x2; |
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394 | uint32_t found = 0; |
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395 | |
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396 | // allocate first free block in kcm_page, update status, |
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397 | // and count , compute index of allocated block in kcm_page |
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398 | while( index <= max ) |
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399 | { |
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400 | if( (status & mask) == 0 ) // block non allocated |
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401 | { |
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402 | hal_remote_s64( XPTR( kcm_cxy , &kcm_page->status ) , status | mask ); |
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403 | hal_remote_s64( XPTR( kcm_cxy , &kcm_page->count ) , count + 1 ); |
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404 | found = 1; |
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405 | break; |
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406 | } |
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407 | |
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408 | index++; |
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409 | mask <<= 1; |
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410 | } |
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411 | |
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412 | // change the page list if almost full |
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413 | if( count == max-1 ) |
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414 | { |
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415 | list_remote_unlink( kcm_cxy , &kcm_page->list ); |
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416 | hal_remote_atomic_add( XPTR( kcm_cxy , &kcm_ptr->active_pages_nr ) , -1 ); |
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417 | |
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418 | list_remote_add_first( kcm_cxy , &kcm_ptr->full_root , &kcm_page->list ); |
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419 | hal_remote_atomic_add( XPTR( kcm_cxy , &kcm_ptr->full_pages_nr ) , 1 ); |
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420 | } |
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421 | |
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422 | // compute return pointer |
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423 | void * ptr = (void *)((intptr_t)kcm_page + (index * size) ); |
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424 | |
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425 | #if DEBUG_KCM_REMOTE |
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426 | thread_t * this = CURRENT_THREAD; |
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427 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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428 | if( DEBUG_KCM_REMOTE < cycle ) |
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429 | printk("\n[%s] thread[%x,%x] get block %x in page %x / cluster %x / size %x / count %d\n", |
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430 | __FUNCTION__, this->process->pid, this->trdid, |
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431 | ptr, kcm_page, kcm_cxy, size, count + 1 ); |
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432 | #endif |
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433 | |
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434 | return ptr; |
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435 | |
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436 | } // end kcm_remote_get_block() |
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437 | |
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438 | ///////////////////////////////////////////////////////////////////////////////////// |
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439 | // This private static function can be called by any thread running in any cluster. |
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440 | // It releases a previously allocated block to the relevant kcm_page. |
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441 | // It changes the kcm_page status as required. |
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442 | ///////////////////////////////////////////////////////////////////////////////////// |
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443 | // @ kcm_cxy : remote KCM cluster identifier |
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444 | // @ kcm_ptr : local pointer on remote KCM. |
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445 | // @ kcm_page : local pointer on kcm_page. |
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446 | // @ block_ptr : pointer on block to be released. |
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447 | ///////////////////////////////////////////////////////////////////////////////////// |
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448 | static void __attribute__((noinline)) kcm_remote_put_block ( cxy_t kcm_cxy, |
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449 | kcm_t * kcm_ptr, |
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450 | kcm_page_t * kcm_page, |
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451 | void * block_ptr ) |
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452 | { |
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453 | uint32_t max = hal_remote_l32( XPTR( kcm_cxy , &kcm_ptr->max_blocks ) ); |
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454 | uint32_t order = hal_remote_l32( XPTR( kcm_cxy , &kcm_ptr->order ) ); |
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455 | uint32_t count = hal_remote_l32( XPTR( kcm_cxy , &kcm_page->count ) ); |
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456 | uint64_t status = hal_remote_l64( XPTR( kcm_cxy , &kcm_page->status ) ); |
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457 | uint32_t size = 1 << order; |
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458 | |
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459 | // compute block index from block pointer |
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460 | uint32_t index = ((intptr_t)block_ptr - (intptr_t)kcm_page) / size; |
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461 | |
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462 | // compute mask in bit vector |
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463 | uint64_t mask = 1 << index; |
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464 | |
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465 | assert( (status & mask) , "released page not allocated" ); |
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466 | |
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467 | // update status & count in kcm_page |
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468 | hal_remote_s64( XPTR( kcm_cxy , &kcm_page->status ) , status & ~mask ); |
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469 | hal_remote_s32( XPTR( kcm_cxy , &kcm_page->count ) , count - 1 ); |
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470 | |
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471 | // change the page list if page was full |
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472 | if( count == max ) |
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473 | { |
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474 | list_remote_unlink( kcm_cxy , &kcm_page->list ); |
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475 | hal_remote_atomic_add( XPTR( kcm_cxy , &kcm_ptr->full_pages_nr ) , -1 ); |
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476 | |
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477 | list_remote_add_last( kcm_cxy , &kcm_ptr->active_root, &kcm_page->list ); |
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478 | hal_remote_atomic_add( XPTR( kcm_cxy , &kcm_ptr->active_pages_nr ) , 1 ); |
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479 | } |
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480 | |
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481 | #if (DEBUG_KCM_REMOTE & 1) |
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482 | thread_t * this = CURRENT_THREAD; |
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483 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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484 | if( DEBUG_KCM_REMOTE < cycle ) |
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485 | printk("\n[%s] thread[%x,%x] released block %x in page %x / cluster %x / size %x / count %d\n", |
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486 | __FUNCTION__, this->process->pid, this->trdid, block_ptr, kcm_page, size, count - 1 ) |
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487 | #endif |
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488 | |
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489 | } // end kcm_remote_put_block() |
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490 | |
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491 | ///////////////////////////////////////////////////////////////////////////////////// |
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492 | // This private static function can be called by any thread running in any cluster. |
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493 | // It gets one non-full KCM page from the remote KCM. |
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494 | // It allocates a page from remote PPM to populate the freelist, and initialises |
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495 | // the kcm_page descriptor when required. |
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496 | ///////////////////////////////////////////////////////////////////////////////////// |
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497 | static kcm_page_t * __attribute__((noinline)) kcm_remote_get_page( cxy_t kcm_cxy, |
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498 | kcm_t * kcm_ptr ) |
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499 | { |
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500 | kcm_page_t * kcm_page; // local pointer on remote KCM page |
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501 | |
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502 | uint32_t active_pages_nr = hal_remote_l32( XPTR( kcm_cxy , &kcm_ptr->active_pages_nr ) ); |
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503 | |
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504 | if( active_pages_nr > 0 ) // return first active page |
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505 | { |
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506 | kcm_page = LIST_REMOTE_FIRST( kcm_cxy , &kcm_ptr->active_root , kcm_page_t , list ); |
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507 | } |
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508 | else // allocate a new page from PPM |
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509 | { |
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510 | // get one 4 Kbytes page from remote PPM |
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511 | xptr_t page_xp = ppm_remote_alloc_pages( kcm_cxy , 0 ); |
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512 | |
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513 | if( page_xp == XPTR_NULL ) |
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514 | { |
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515 | printk("\n[ERROR] in %s : failed to allocate page in cluster %x\n", |
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516 | __FUNCTION__ , kcm_cxy ); |
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517 | |
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518 | return NULL; |
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519 | } |
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520 | |
---|
521 | // get extended pointer on allocated buffer |
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522 | xptr_t base_xp = ppm_page2base( page_xp ); |
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523 | |
---|
524 | // get local pointer on kcm_page |
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525 | kcm_page = GET_PTR( base_xp ); |
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526 | |
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527 | // initialize kcm_page descriptor |
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528 | hal_remote_s32( XPTR( kcm_cxy , &kcm_page->count ) , 0 ); |
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529 | hal_remote_s64( XPTR( kcm_cxy , &kcm_page->status ) , 0 ); |
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530 | hal_remote_spt( XPTR( kcm_cxy , &kcm_page->kcm ) , kcm_ptr ); |
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531 | hal_remote_spt( XPTR( kcm_cxy , &kcm_page->page ) , GET_PTR( page_xp ) ); |
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532 | |
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533 | // introduce new page in remote KCM active_list |
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534 | list_remote_add_first( kcm_cxy , &kcm_ptr->active_root , &kcm_page->list ); |
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535 | hal_remote_atomic_add( XPTR( kcm_cxy , &kcm_ptr->active_pages_nr ) , 1 ); |
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536 | } |
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537 | |
---|
538 | return kcm_page; |
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539 | |
---|
540 | } // end kcm_remote_get_page() |
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541 | |
---|
542 | ///////////////////////////////////////// |
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543 | void * kcm_remote_alloc( cxy_t kcm_cxy, |
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544 | uint32_t order ) |
---|
545 | { |
---|
546 | kcm_t * kcm_ptr; |
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547 | kcm_page_t * kcm_page; |
---|
548 | void * block_ptr; |
---|
549 | |
---|
550 | if( order < 6 ) order = 6; |
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551 | |
---|
552 | assert( (order < 12) , "order = %d / must be less than 12" , order ); |
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553 | |
---|
554 | // get local pointer on relevant KCM allocator |
---|
555 | kcm_ptr = &LOCAL_CLUSTER->kcm[order - 6]; |
---|
556 | |
---|
557 | // build extended pointer on remote KCM lock |
---|
558 | xptr_t lock_xp = XPTR( kcm_cxy , &kcm_ptr->lock ); |
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559 | |
---|
560 | // get lock |
---|
561 | remote_busylock_acquire( lock_xp ); |
---|
562 | |
---|
563 | // get a non-full kcm_page |
---|
564 | kcm_page = kcm_remote_get_page( kcm_cxy , kcm_ptr ); |
---|
565 | |
---|
566 | if( kcm_page == NULL ) |
---|
567 | { |
---|
568 | remote_busylock_release( lock_xp ); |
---|
569 | return NULL; |
---|
570 | } |
---|
571 | |
---|
572 | // get a block from selected active page |
---|
573 | block_ptr = kcm_remote_get_block( kcm_cxy , kcm_ptr , kcm_page ); |
---|
574 | |
---|
575 | // release lock |
---|
576 | remote_busylock_release( lock_xp ); |
---|
577 | |
---|
578 | #if DEBUG_KCM_REMOTE |
---|
579 | thread_t * this = CURRENT_THREAD; |
---|
580 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
581 | if( DEBUG_KCM_REMOTE < cycle ) |
---|
582 | printk("\n[%s] thread[%x,%x] allocated block %x / order %d / kcm[%x,%x]\n", |
---|
583 | __FUNCTION__, this->process->pid, this->trdid, block_ptr, order, kcm_cxy, kcm_ptr ); |
---|
584 | #endif |
---|
585 | |
---|
586 | return block_ptr; |
---|
587 | |
---|
588 | } // end kcm_remote_alloc() |
---|
589 | |
---|
590 | ///////////////////////////////////// |
---|
591 | void kcm_remote_free( cxy_t kcm_cxy, |
---|
592 | void * block_ptr ) |
---|
593 | { |
---|
594 | kcm_t * kcm_ptr; |
---|
595 | kcm_page_t * kcm_page; |
---|
596 | |
---|
597 | // check argument |
---|
598 | assert( (block_ptr != NULL) , "block pointer cannot be NULL" ); |
---|
599 | |
---|
600 | // get local pointer on remote KCM page |
---|
601 | kcm_page = (kcm_page_t *)((intptr_t)block_ptr & ~CONFIG_PPM_PAGE_MASK); |
---|
602 | |
---|
603 | // get local pointer on remote KCM |
---|
604 | kcm_ptr = hal_remote_lpt( XPTR( kcm_cxy , &kcm_page->kcm ) ); |
---|
605 | |
---|
606 | // build extended pointer on remote KCM lock |
---|
607 | xptr_t lock_xp = XPTR( kcm_cxy , &kcm_ptr->lock ); |
---|
608 | |
---|
609 | // get lock |
---|
610 | remote_busylock_acquire( lock_xp ); |
---|
611 | |
---|
612 | // release block |
---|
613 | kcm_remote_put_block( kcm_cxy , kcm_ptr , kcm_page , block_ptr ); |
---|
614 | |
---|
615 | // release lock |
---|
616 | remote_busylock_release( lock_xp ); |
---|
617 | |
---|
618 | #if DEBUG_KCM_REMOTE |
---|
619 | thread_t * this = CURRENT_THREAD; |
---|
620 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
621 | uint32_t order = hal_remote_l32( XPTR( kcm_cxy , &kcm_ptr->order ) ); |
---|
622 | if( DEBUG_KCM_REMOTE < cycle ) |
---|
623 | printk("\n[%s] thread[%x,%x] released block %x / order %d / kcm[%x,%x]\n", |
---|
624 | __FUNCTION__, this->process->pid, this->trdid, block_ptr, order, kcm_cxy, kcm_ptr ); |
---|
625 | #endif |
---|
626 | |
---|
627 | } // end kcm_remote_free |
---|
628 | |
---|
629 | ///////////////////////////////////////// |
---|
630 | void kcm_remote_display( cxy_t kcm_cxy, |
---|
631 | kcm_t * kcm_ptr ) |
---|
632 | { |
---|
633 | uint32_t order = hal_remote_l32( XPTR( kcm_cxy , &kcm_ptr->order) ); |
---|
634 | uint32_t full_pages_nr = hal_remote_l32( XPTR( kcm_cxy , &kcm_ptr->full_pages_nr ) ); |
---|
635 | uint32_t active_pages_nr = hal_remote_l32( XPTR( kcm_cxy , &kcm_ptr->active_pages_nr ) ); |
---|
636 | |
---|
637 | printk("*** KCM / cxy %x / order %d / full_pages %d / empty_pages %d / active_pages %d\n", |
---|
638 | kcm_cxy, order, full_pages_nr, active_pages_nr ); |
---|
639 | } |
---|