[1] | 1 | /* |
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| 2 | * cluster.c - Cluster-Manager related operations |
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[19] | 3 | * |
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[1] | 4 | * Author Ghassan Almaless (2008,2009,2010,2011,2012) |
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| 5 | * Mohamed Lamine Karaoui (2015) |
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[23] | 6 | * Alain Greiner (2016,2017) |
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[1] | 7 | * |
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| 8 | * Copyright (c) UPMC Sorbonne Universites |
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| 9 | * |
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| 10 | * This file is part of ALMOS-MKH.. |
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| 11 | * |
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| 12 | * ALMOS-MKH. is free software; you can redistribute it and/or modify it |
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| 13 | * under the terms of the GNU General Public License as published by |
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| 14 | * the Free Software Foundation; version 2.0 of the License. |
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| 15 | * |
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| 16 | * ALMOS-MKH. is distributed in the hope that it will be useful, but |
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| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 19 | * General Public License for more details. |
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| 20 | * |
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| 21 | * You should have received a copy of the GNU General Public License |
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| 22 | * along with ALMOS-MKH.; if not, write to the Free Software Foundation, |
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| 23 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 24 | */ |
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| 25 | |
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[14] | 26 | #include <kernel_config.h> |
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[1] | 27 | #include <hal_types.h> |
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| 28 | #include <hal_atomic.h> |
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| 29 | #include <hal_special.h> |
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[50] | 30 | #include <hal_ppm.h> |
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[407] | 31 | #include <remote_fifo.h> |
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[1] | 32 | #include <printk.h> |
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| 33 | #include <errno.h> |
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| 34 | #include <spinlock.h> |
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| 35 | #include <core.h> |
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| 36 | #include <scheduler.h> |
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| 37 | #include <list.h> |
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| 38 | #include <cluster.h> |
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| 39 | #include <boot_info.h> |
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| 40 | #include <bits.h> |
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| 41 | #include <ppm.h> |
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| 42 | #include <thread.h> |
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| 43 | #include <kmem.h> |
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| 44 | #include <process.h> |
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| 45 | #include <dqdt.h> |
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| 46 | |
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[408] | 47 | ///////////////////////////////////////////////////////////////////////////////////// |
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[1] | 48 | // Extern global variables |
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[408] | 49 | ///////////////////////////////////////////////////////////////////////////////////// |
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[1] | 50 | |
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[23] | 51 | extern process_t process_zero; // allocated in kernel_init.c file |
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[1] | 52 | |
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| 53 | |
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| 54 | ///////////////////////////////////////////////// |
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| 55 | error_t cluster_init( struct boot_info_s * info ) |
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| 56 | { |
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[428] | 57 | error_t error; |
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| 58 | lpid_t lpid; // local process_index |
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| 59 | lid_t lid; // local core index |
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| 60 | uint32_t i; // index in loop on external peripherals |
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| 61 | boot_device_t * dev; // pointer on external peripheral |
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| 62 | uint32_t func; // external peripheral functionnal type |
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[1] | 63 | |
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| 64 | cluster_t * cluster = LOCAL_CLUSTER; |
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| 65 | |
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| 66 | // initialize cluster global parameters |
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[19] | 67 | cluster->paddr_width = info->paddr_width; |
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[1] | 68 | cluster->x_width = info->x_width; |
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| 69 | cluster->y_width = info->y_width; |
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| 70 | cluster->x_size = info->x_size; |
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| 71 | cluster->y_size = info->y_size; |
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| 72 | cluster->io_cxy = info->io_cxy; |
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| 73 | |
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[428] | 74 | // initialize external peripherals channels |
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| 75 | for( i = 0 ; i < info->ext_dev_nr ; i++ ) |
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| 76 | { |
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| 77 | dev = &info->ext_dev[i]; |
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| 78 | func = FUNC_FROM_TYPE( dev->type ); |
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| 79 | if( func == DEV_FUNC_TXT ) cluster->nb_txt_channels = dev->channels; |
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| 80 | if( func == DEV_FUNC_NIC ) cluster->nb_nic_channels = dev->channels; |
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| 81 | if( func == DEV_FUNC_IOC ) cluster->nb_ioc_channels = dev->channels; |
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| 82 | if( func == DEV_FUNC_FBF ) cluster->nb_fbf_channels = dev->channels; |
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| 83 | } |
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| 84 | |
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[1] | 85 | // initialize cluster local parameters |
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| 86 | cluster->cores_nr = info->cores_nr; |
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| 87 | |
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[19] | 88 | // initialize the lock protecting the embedded kcm allocator |
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[1] | 89 | spinlock_init( &cluster->kcm_lock ); |
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| 90 | |
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[407] | 91 | cluster_dmsg("\n[DBG] %s for cluster %x enters\n", |
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| 92 | __FUNCTION__ , local_cxy ); |
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[50] | 93 | |
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[19] | 94 | // initialises DQDT |
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| 95 | cluster->dqdt_root_level = dqdt_init( info->x_size, |
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| 96 | info->y_size, |
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[1] | 97 | info->y_width ); |
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| 98 | cluster->threads_var = 0; |
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| 99 | cluster->pages_var = 0; |
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| 100 | |
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| 101 | // initialises embedded PPM |
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[50] | 102 | error = hal_ppm_init( info ); |
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[1] | 103 | |
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[50] | 104 | if( error ) |
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| 105 | { |
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| 106 | printk("\n[ERROR] in %s : cannot initialize PPM in cluster %x\n", |
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| 107 | __FUNCTION__ , local_cxy ); |
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| 108 | return ENOMEM; |
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| 109 | } |
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| 110 | |
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[407] | 111 | cluster_dmsg("\n[DBG] %s : PPM initialized in cluster %x at cycle %d\n", |
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| 112 | __FUNCTION__ , local_cxy , hal_get_cycles() ); |
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[50] | 113 | |
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[1] | 114 | // initialises embedded KHM |
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| 115 | khm_init( &cluster->khm ); |
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[19] | 116 | |
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[407] | 117 | cluster_dmsg("\n[DBG] %s : KHM initialized in cluster %x at cycle %d\n", |
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[101] | 118 | __FUNCTION__ , local_cxy , hal_get_cycles() ); |
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[50] | 119 | |
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[19] | 120 | // initialises embedded KCM |
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[5] | 121 | kcm_init( &cluster->kcm , KMEM_KCM ); |
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[1] | 122 | |
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[407] | 123 | cluster_dmsg("\n[DBG] %s : KCM initialized in cluster %x at cycle %d\n", |
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[101] | 124 | __FUNCTION__ , local_cxy , hal_get_cycles() ); |
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[50] | 125 | |
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[296] | 126 | // initialises all cores descriptors |
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[1] | 127 | for( lid = 0 ; lid < cluster->cores_nr; lid++ ) |
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| 128 | { |
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| 129 | core_init( &cluster->core_tbl[lid], // target core descriptor |
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| 130 | lid, // local core index |
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| 131 | info->core[lid].gid ); // gid from boot_info_t |
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| 132 | } |
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[19] | 133 | |
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[407] | 134 | cluster_dmsg("\n[DBG] %s : cores initialized in cluster %x at cycle %d\n", |
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| 135 | __FUNCTION__ , local_cxy , hal_get_cycles() ); |
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[50] | 136 | |
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[1] | 137 | // initialises RPC fifo |
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[407] | 138 | local_fifo_init( &cluster->rpc_fifo ); |
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[279] | 139 | cluster->rpc_threads = 0; |
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[1] | 140 | |
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[407] | 141 | cluster_dmsg("\n[DBG] %s : RPC fifo inialized in cluster %x at cycle %d\n", |
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| 142 | __FUNCTION__ , local_cxy , hal_get_cycles() ); |
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[50] | 143 | |
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[1] | 144 | // initialise pref_tbl[] in process manager |
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| 145 | spinlock_init( &cluster->pmgr.pref_lock ); |
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| 146 | cluster->pmgr.pref_nr = 0; |
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[19] | 147 | cluster->pmgr.pref_tbl[0] = XPTR( local_cxy , &process_zero ); |
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[1] | 148 | for( lpid = 1 ; lpid < CONFIG_MAX_PROCESS_PER_CLUSTER ; lpid++ ) |
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| 149 | { |
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| 150 | cluster->pmgr.pref_tbl[lpid] = XPTR_NULL; |
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| 151 | } |
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| 152 | |
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| 153 | // initialise local_list in process manager |
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[23] | 154 | remote_spinlock_init( XPTR( local_cxy , &cluster->pmgr.local_lock ) ); |
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| 155 | xlist_root_init( XPTR( local_cxy , &cluster->pmgr.local_root ) ); |
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[1] | 156 | cluster->pmgr.local_nr = 0; |
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| 157 | |
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| 158 | // initialise copies_lists in process manager |
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[101] | 159 | for( lpid = 0 ; lpid < CONFIG_MAX_PROCESS_PER_CLUSTER ; lpid++ ) |
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[1] | 160 | { |
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| 161 | remote_spinlock_init( XPTR( local_cxy , &cluster->pmgr.copies_lock[lpid] ) ); |
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| 162 | cluster->pmgr.copies_nr[lpid] = 0; |
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| 163 | xlist_root_init( XPTR( local_cxy , &cluster->pmgr.copies_root[lpid] ) ); |
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[19] | 164 | } |
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[1] | 165 | |
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[407] | 166 | cluster_dmsg("\n[DBG] %s Process Manager initialized in cluster %x at cycle %d\n", |
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| 167 | __FUNCTION__ , local_cxy , hal_get_cycles() ); |
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[50] | 168 | |
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[124] | 169 | hal_fence(); |
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[1] | 170 | |
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| 171 | return 0; |
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| 172 | } // end cluster_init() |
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| 173 | |
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| 174 | //////////////////////////////////////// |
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| 175 | bool_t cluster_is_undefined( cxy_t cxy ) |
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| 176 | { |
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| 177 | cluster_t * cluster = LOCAL_CLUSTER; |
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| 178 | |
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| 179 | uint32_t y_width = cluster->y_width; |
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| 180 | |
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| 181 | uint32_t x = cxy >> y_width; |
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| 182 | uint32_t y = cxy & ((1<<y_width)-1); |
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| 183 | |
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[19] | 184 | if( x >= cluster->x_size ) return true; |
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| 185 | if( y >= cluster->y_size ) return true; |
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[1] | 186 | |
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| 187 | return false; |
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| 188 | } |
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| 189 | |
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| 190 | //////////////////////////////////////////////////////////////////////////////////// |
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| 191 | // Cores related functions |
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| 192 | //////////////////////////////////////////////////////////////////////////////////// |
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| 193 | |
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| 194 | ///////////////////////////////// |
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| 195 | lid_t cluster_select_local_core() |
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| 196 | { |
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| 197 | uint32_t min = 100; |
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| 198 | lid_t sel = 0; |
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| 199 | lid_t lid; |
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| 200 | |
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| 201 | cluster_t * cluster = LOCAL_CLUSTER; |
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| 202 | |
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| 203 | for( lid = 0 ; lid < cluster->cores_nr ; lid++ ) |
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| 204 | { |
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| 205 | if( cluster->core_tbl[lid].usage < min ) |
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| 206 | { |
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| 207 | min = cluster->core_tbl[lid].usage; |
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| 208 | sel = lid; |
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| 209 | } |
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[19] | 210 | } |
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[1] | 211 | return sel; |
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| 212 | } |
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| 213 | |
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| 214 | //////////////////////////////////////////////////////////////////////////////////// |
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[428] | 215 | // Process related functions |
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[1] | 216 | //////////////////////////////////////////////////////////////////////////////////// |
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| 217 | |
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| 218 | ////////////////////////////////////////////////////////// |
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| 219 | xptr_t cluster_get_reference_process_from_pid( pid_t pid ) |
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[19] | 220 | { |
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[23] | 221 | xptr_t ref_xp; // extended pointer on reference process descriptor |
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[1] | 222 | |
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| 223 | cluster_t * cluster = LOCAL_CLUSTER; |
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| 224 | |
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| 225 | // get owner cluster and lpid |
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| 226 | cxy_t owner_cxy = CXY_FROM_PID( pid ); |
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| 227 | lpid_t lpid = LPID_FROM_PID( pid ); |
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| 228 | |
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[19] | 229 | // Check valid PID |
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[23] | 230 | if( lpid >= CONFIG_MAX_PROCESS_PER_CLUSTER ) return XPTR_NULL; |
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[1] | 231 | |
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| 232 | if( local_cxy == owner_cxy ) // local cluster is owner cluster |
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[19] | 233 | { |
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[23] | 234 | ref_xp = cluster->pmgr.pref_tbl[lpid]; |
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[1] | 235 | } |
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| 236 | else // use a remote_lwd to access owner cluster |
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| 237 | { |
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[23] | 238 | ref_xp = (xptr_t)hal_remote_lwd( XPTR( owner_cxy , &cluster->pmgr.pref_tbl[lpid] ) ); |
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[1] | 239 | } |
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| 240 | |
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[23] | 241 | return ref_xp; |
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[1] | 242 | } |
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| 243 | |
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[416] | 244 | /////////////////////////////////////////////// |
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| 245 | error_t cluster_pid_alloc( process_t * process, |
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| 246 | pid_t * pid ) |
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[1] | 247 | { |
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| 248 | lpid_t lpid; |
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| 249 | bool_t found; |
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| 250 | |
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| 251 | pmgr_t * pm = &LOCAL_CLUSTER->pmgr; |
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| 252 | |
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| 253 | // get the process manager lock |
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| 254 | spinlock_lock( &pm->pref_lock ); |
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| 255 | |
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| 256 | // search an empty slot |
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| 257 | found = false; |
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| 258 | for( lpid = 0 ; lpid < CONFIG_MAX_PROCESS_PER_CLUSTER ; lpid++ ) |
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| 259 | { |
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| 260 | if( pm->pref_tbl[lpid] == XPTR_NULL ) |
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| 261 | { |
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| 262 | found = true; |
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| 263 | break; |
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| 264 | } |
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| 265 | } |
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| 266 | |
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| 267 | if( found ) |
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| 268 | { |
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| 269 | // register process in pref_tbl[] |
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[416] | 270 | pm->pref_tbl[lpid] = XPTR( local_cxy , process ); |
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[1] | 271 | pm->pref_nr++; |
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| 272 | |
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| 273 | // returns pid |
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| 274 | *pid = PID( local_cxy , lpid ); |
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| 275 | |
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[416] | 276 | // release the processs_manager lock |
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| 277 | spinlock_unlock( &pm->pref_lock ); |
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| 278 | |
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| 279 | return 0; |
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[1] | 280 | } |
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| 281 | else |
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| 282 | { |
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[416] | 283 | // release the processs_manager lock |
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| 284 | spinlock_unlock( &pm->pref_lock ); |
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| 285 | |
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| 286 | return -1; |
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[19] | 287 | } |
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[1] | 288 | |
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| 289 | } // end cluster_pid_alloc() |
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| 290 | |
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| 291 | ///////////////////////////////////// |
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| 292 | void cluster_pid_release( pid_t pid ) |
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| 293 | { |
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| 294 | cxy_t owner_cxy = CXY_FROM_PID( pid ); |
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| 295 | lpid_t lpid = LPID_FROM_PID( pid ); |
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| 296 | |
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[409] | 297 | pmgr_t * pm = &LOCAL_CLUSTER->pmgr; |
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| 298 | |
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[1] | 299 | // check pid argument |
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[409] | 300 | assert( (lpid < CONFIG_MAX_PROCESS_PER_CLUSTER) && (owner_cxy == local_cxy) , |
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| 301 | __FUNCTION__ , "illegal PID" ); |
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[1] | 302 | |
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| 303 | // get the process manager lock |
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| 304 | spinlock_lock( &pm->pref_lock ); |
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| 305 | |
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| 306 | // remove process from pref_tbl[] |
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| 307 | pm->pref_tbl[lpid] = XPTR_NULL; |
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| 308 | pm->pref_nr--; |
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| 309 | |
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| 310 | // release the processs_manager lock |
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| 311 | spinlock_unlock( &pm->pref_lock ); |
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| 312 | |
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| 313 | } // end cluster_pid_release() |
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| 314 | |
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| 315 | /////////////////////////////////////////////////////////// |
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| 316 | process_t * cluster_get_local_process_from_pid( pid_t pid ) |
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| 317 | { |
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[23] | 318 | xptr_t process_xp; |
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| 319 | process_t * process_ptr; |
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| 320 | xptr_t root_xp; |
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| 321 | xptr_t iter_xp; |
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| 322 | bool_t found; |
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[19] | 323 | |
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[23] | 324 | found = false; |
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| 325 | root_xp = XPTR( local_cxy , &LOCAL_CLUSTER->pmgr.local_root ); |
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| 326 | |
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| 327 | XLIST_FOREACH( root_xp , iter_xp ) |
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[1] | 328 | { |
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[23] | 329 | process_xp = XLIST_ELEMENT( iter_xp , process_t , local_list ); |
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| 330 | process_ptr = (process_t *)GET_PTR( process_xp ); |
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| 331 | if( process_ptr->pid == pid ) |
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[1] | 332 | { |
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[23] | 333 | found = true; |
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[1] | 334 | break; |
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| 335 | } |
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| 336 | } |
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| 337 | |
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[23] | 338 | if (found ) return process_ptr; |
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| 339 | else return NULL; |
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| 340 | |
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[1] | 341 | } // end cluster_get_local_process_from_pid() |
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| 342 | |
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| 343 | ////////////////////////////////////////////////////// |
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| 344 | void cluster_process_local_link( process_t * process ) |
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| 345 | { |
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[407] | 346 | uint32_t irq_state; |
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[1] | 347 | pmgr_t * pm = &LOCAL_CLUSTER->pmgr; |
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| 348 | |
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| 349 | // get lock protecting the process manager local list |
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[407] | 350 | remote_spinlock_lock_busy( XPTR( local_cxy , &pm->local_lock ) , & irq_state ); |
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[1] | 351 | |
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[428] | 352 | xlist_add_last( XPTR( local_cxy , &pm->local_root ), |
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| 353 | XPTR( local_cxy , &process->local_list ) ); |
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[1] | 354 | pm->local_nr++; |
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| 355 | |
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| 356 | // release lock protecting the process manager local list |
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[407] | 357 | remote_spinlock_unlock_busy( XPTR( local_cxy , &pm->local_lock ) , irq_state ); |
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[1] | 358 | } |
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| 359 | |
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| 360 | //////////////////////////////////////////////////////// |
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| 361 | void cluster_process_local_unlink( process_t * process ) |
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| 362 | { |
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[407] | 363 | uint32_t irq_state; |
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[1] | 364 | pmgr_t * pm = &LOCAL_CLUSTER->pmgr; |
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| 365 | |
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| 366 | // get lock protecting the process manager local list |
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[407] | 367 | remote_spinlock_lock_busy( XPTR( local_cxy , &pm->local_lock ) , &irq_state ); |
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[1] | 368 | |
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[23] | 369 | xlist_unlink( XPTR( local_cxy , &process->local_list ) ); |
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[1] | 370 | pm->local_nr--; |
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| 371 | |
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| 372 | // release lock protecting the process manager local list |
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[407] | 373 | remote_spinlock_unlock_busy( XPTR( local_cxy , &pm->local_lock ) , irq_state ); |
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[1] | 374 | } |
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| 375 | |
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| 376 | /////////////////////////////////////////////////////// |
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| 377 | void cluster_process_copies_link( process_t * process ) |
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| 378 | { |
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[407] | 379 | uint32_t irq_state; |
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[1] | 380 | pmgr_t * pm = &LOCAL_CLUSTER->pmgr; |
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| 381 | |
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| 382 | // get owner cluster identifier CXY and process LPID |
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| 383 | pid_t pid = process->pid; |
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| 384 | cxy_t owner_cxy = CXY_FROM_PID( pid ); |
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| 385 | lpid_t lpid = LPID_FROM_PID( pid ); |
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| 386 | |
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| 387 | // get extended pointer on lock protecting copies_list[lpid] |
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[120] | 388 | xptr_t copies_lock = XPTR( owner_cxy , &pm->copies_lock[lpid] ); |
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[1] | 389 | |
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| 390 | // get extended pointer on the copies_list[lpid] root |
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[120] | 391 | xptr_t copies_root = XPTR( owner_cxy , &pm->copies_root[lpid] ); |
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[1] | 392 | |
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| 393 | // get extended pointer on the local copies_list entry |
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| 394 | xptr_t copies_entry = XPTR( local_cxy , &process->copies_list ); |
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| 395 | |
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[19] | 396 | // get lock protecting copies_list[lpid] |
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[407] | 397 | remote_spinlock_lock_busy( copies_lock , &irq_state ); |
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[1] | 398 | |
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| 399 | xlist_add_first( copies_root , copies_entry ); |
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| 400 | hal_remote_atomic_add( XPTR( owner_cxy , &pm->copies_nr[lpid] ) , 1 ); |
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| 401 | |
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[19] | 402 | // release lock protecting copies_list[lpid] |
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[407] | 403 | remote_spinlock_unlock_busy( copies_lock , irq_state ); |
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[1] | 404 | } |
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| 405 | |
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| 406 | ///////////////////////////////////////////////////////// |
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| 407 | void cluster_process_copies_unlink( process_t * process ) |
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| 408 | { |
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[407] | 409 | uint32_t irq_state; |
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[1] | 410 | pmgr_t * pm = &LOCAL_CLUSTER->pmgr; |
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| 411 | |
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| 412 | // get owner cluster identifier CXY and process LPID |
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| 413 | pid_t pid = process->pid; |
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| 414 | cxy_t owner_cxy = CXY_FROM_PID( pid ); |
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| 415 | lpid_t lpid = LPID_FROM_PID( pid ); |
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| 416 | |
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| 417 | // get extended pointer on lock protecting copies_list[lpid] |
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| 418 | xptr_t copies_lock = hal_remote_lwd( XPTR( owner_cxy , &pm->copies_lock[lpid] ) ); |
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| 419 | |
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| 420 | // get extended pointer on the local copies_list entry |
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| 421 | xptr_t copies_entry = XPTR( local_cxy , &process->copies_list ); |
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| 422 | |
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[19] | 423 | // get lock protecting copies_list[lpid] |
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[407] | 424 | remote_spinlock_lock_busy( copies_lock , &irq_state ); |
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[1] | 425 | |
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| 426 | xlist_unlink( copies_entry ); |
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| 427 | hal_remote_atomic_add( XPTR( owner_cxy , &pm->copies_nr[lpid] ) , -1 ); |
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| 428 | |
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[19] | 429 | // release lock protecting copies_list[lpid] |
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[407] | 430 | remote_spinlock_unlock_busy( copies_lock , irq_state ); |
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[1] | 431 | } |
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| 432 | |
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[428] | 433 | /////////////////////////////////////////// |
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| 434 | void cluster_processes_display( cxy_t cxy ) |
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[1] | 435 | { |
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[428] | 436 | xptr_t root_xp; |
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| 437 | xptr_t iter_xp; |
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| 438 | xptr_t process_xp; |
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[1] | 439 | |
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[428] | 440 | // get extended pointer on root of process in cluster cxy |
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| 441 | root_xp = XPTR( cxy , &LOCAL_CLUSTER->pmgr.local_root ); |
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[1] | 442 | |
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[428] | 443 | // skip one line |
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| 444 | printk("\n"); |
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[1] | 445 | |
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[428] | 446 | // loop on all reference processes in cluster cxy |
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| 447 | XLIST_FOREACH( root_xp , iter_xp ) |
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| 448 | { |
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| 449 | process_xp = XLIST_ELEMENT( iter_xp , process_t , local_list ); |
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| 450 | process_display( process_xp ); |
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| 451 | } |
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| 452 | } // end cluster_processes_display() |
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[1] | 453 | |
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[19] | 454 | |
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