src/surf/vm_workstation.c

   1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "xbt/ex.h"
   8 #include "xbt/dict.h"
   9 #include "portable.h"
  10 #include "surf_private.h"
  11 #include "surf/surf_resource.h"
  12 #include "simgrid/sg_config.h"
  13 #include "vm_workstation_private.h"
  14 #include "cpu_cas01_private.h"
  15 #include "maxmin_private.h"
  16
  17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm_workstation, surf,
  18                                 "Logging specific to the SURF VM workstation module");
  19
  20
  21 surf_model_t surf_vm_workstation_model = NULL;
  22
  23 /* ind means ''indirect'' that this is a reference on the whole dict_elm
  24  * structure (i.e not on the surf_resource_private infos) */
  25
  26 static void vm_ws_create(const char *name, void *ind_phys_workstation)
  27 {
  28   workstation_CLM03_t sub_ws = surf_workstation_resource_priv(ind_phys_workstation);
  29   const char *sub_ws_name = sub_ws->generic_resource.name;
  30
  31   /* The workstation_VM2013 struct inherits the workstation_CLM03 struct. We
  32    * create a physical workstation resource, but specifying the size of
  33    * s_workstation_VM2013_t and the vm workstation model object. */
  34   workstation_CLM03_t ws = (workstation_CLM03_t) surf_resource_new(sizeof(s_workstation_VM2013_t),
  35       surf_vm_workstation_model, name, NULL, NULL);
  36
  37   /* Currently, we assume a VM has no storage. */
  38   ws->storage = NULL;
  39
  40   /* Currently, a VM uses the network resource of its physical host. In
  41    * host_lib, this network resource object is refered from two different keys.
  42    * When deregistering the reference that points the network resource object
  43    * from the VM name, we have to make sure that the system does not call the
  44    * free callback for the network resource object. The network resource object
  45    * is still used by the physical machine. */
  46   ws->net_elm = xbt_lib_get_or_null(host_lib, sub_ws_name, ROUTING_HOST_LEVEL);
  47   xbt_lib_set(host_lib, name, ROUTING_HOST_LEVEL, ws->net_elm);
  48
  49   /* The SURF_WKS_LEVEL at host_lib saves workstation_CLM03 objects. Please
  50    * note workstation_VM2013 objects, inheriting the workstation_CLM03
  51    * structure, are also saved there.
  52    *
  53    * If you want to get a workstation_VM2013 object from host_lib, see
  54    * ws->generic_resouce.model->type first. If it is
  55    * SURF_MODEL_TYPE_VM_WORKSTATION, you can cast ws to vm_ws. */
  56   XBT_INFO("Create VM(%s)@PM(%s) with %ld mounted disks", name, sub_ws_name, xbt_dynar_length(ws->storage));
  57   xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, ws);
  58
  59
  60   /* We initialize the VM-specific members. */
  61   workstation_VM2013_t vm_ws = (workstation_VM2013_t) ws;
  62   vm_ws->sub_ws = sub_ws;
  63   vm_ws->current_state = SURF_VM_STATE_CREATED;
  64
  65
  66
  67   // //// CPU  RELATED STUFF ////
  68   // Roughly, create a vcpu resource by using the values of the sub_cpu one.
  69   cpu_Cas01_t sub_cpu = surf_cpu_resource_priv(ind_phys_workstation);
  70
  71   /* We can assume one core and cas01 cpu for the first step.
  72    * Do xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu) if you get the resource. */
  73   cpu_cas01_create_resource(name, // name
  74       sub_cpu->power_peak_list,        // host->power_peak,
  75       sub_cpu->pstate,
  76       1,                          // host->power_scale,
  77       NULL,                       // host->power_trace,
  78       1,                          // host->core_amount,
  79       SURF_RESOURCE_ON,           // host->initial_state,
  80       NULL,                       // host->state_trace,
  81       NULL,                       // host->properties,
  82       surf_cpu_model_vm);
  83
  84
  85
  86   /* We create cpu_action corresponding to a VM process on the host operating system. */
  87   /* FIXME: TODO: we have to peridocally input GUESTOS_NOISE to the system? how ? */
  88   // vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, GUESTOS_NOISE);
  89   vm_ws->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_phys_workstation, 0);
  90
  91
  92   /* TODO:
  93    * - check how network requests are scheduled between distinct processes competing for the same card.
  94    */
  95 }
  96
  97 /*
  98  * Update the physical host of the given VM
  99  */
 100 static void vm_ws_migrate(void *ind_vm, void *ind_dst_pm)
 101 {
 102    /* ind_phys_workstation equals to smx_host_t */
 103    workstation_VM2013_t ws_vm2013 = surf_workstation_resource_priv(ind_vm);
 104    workstation_CLM03_t ws_clm03_dst = surf_workstation_resource_priv(ind_dst_pm);
 105    const char *vm_name = ws_vm2013->ws.generic_resource.name;
 106    const char *pm_name_src = ws_vm2013->sub_ws->generic_resource.name;
 107    const char *pm_name_dst = ws_clm03_dst->generic_resource.name;
 108
 109    xbt_assert(ws_vm2013);
 110    xbt_assert(ws_clm03_dst);
 111
 112    /* do something */
 113
 114    /* update net_elm with that of the destination physical host */
 115    void *old_net_elm = ws_vm2013->ws.net_elm;
 116    void *new_net_elm = xbt_lib_get_or_null(host_lib, pm_name_dst, ROUTING_HOST_LEVEL);
 117    xbt_assert(new_net_elm);
 118
 119    /* Unregister the current net_elm from host_lib. Do not call the free callback. */
 120    xbt_lib_unset(host_lib, vm_name, ROUTING_HOST_LEVEL, 0);
 121
 122    /* Then, resister the new one. */
 123    ws_vm2013->ws.net_elm = new_net_elm;
 124    xbt_lib_set(host_lib, vm_name, ROUTING_HOST_LEVEL, ws_vm2013->ws.net_elm);
 125
 126    ws_vm2013->sub_ws = ws_clm03_dst;
 127
 128    /* Update vcpu's action for the new pm */
 129    {
 130 #if 0
 131      XBT_INFO("cpu_action->remains %g", ws_vm2013->cpu_action->remains);
 132      XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
 133          ws_vm2013->cpu_action->remains,
 134          ws_vm2013->cpu_action->start,
 135          ws_vm2013->cpu_action->finish
 136          );
 137      XBT_INFO("cpu_action state %d", surf_action_state_get(ws_vm2013->cpu_action));
 138 #endif
 139
 140      /* create a cpu action bound to the pm model at the destination. */
 141      surf_action_t new_cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_dst_pm, 0);
 142
 143      e_surf_action_state_t state = surf_action_state_get(ws_vm2013->cpu_action);
 144      if (state != SURF_ACTION_DONE)
 145        XBT_CRITICAL("FIXME: may need a proper handling, %d", state);
 146      if (ws_vm2013->cpu_action->remains > 0)
 147        XBT_CRITICAL("FIXME: need copy the state(?), %f", ws_vm2013->cpu_action->remains);
 148
 149      int ret = surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
 150      xbt_assert(ret == 1, "Bug: some resource still remains");
 151
 152      ws_vm2013->cpu_action = new_cpu_action;
 153    }
 154
 155    XBT_DEBUG("migrate VM(%s): change net_elm (%p to %p)", vm_name, old_net_elm, new_net_elm);
 156    XBT_DEBUG("migrate VM(%s): change PM (%s to %s)", vm_name, pm_name_src, pm_name_dst);
 157 }
 158
 159 /*
 160  * A physical host does not disapper in the current SimGrid code, but a VM may
 161  * disapper during a simulation.
 162  */
 163 static void vm_ws_destroy(void *ind_vm_workstation)
 164 {
 165         /* ind_phys_workstation equals to smx_host_t */
 166
 167   /* Before clearing the entries in host_lib, we have to pick up resources. */
 168         workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
 169   cpu_Cas01_t cpu = surf_cpu_resource_priv(ind_vm_workstation);
 170         const char *name = vm_ws->ws.generic_resource.name;
 171
 172         xbt_assert(vm_ws);
 173         xbt_assert(vm_ws->ws.generic_resource.model == surf_vm_workstation_model);
 174
 175
 176   /* We deregister objects from host_lib, without invoking the freeing callback
 177    * of each level.
 178    *
 179    * Do not call xbt_lib_remove() here. It deletes all levels of the key,
 180    * including MSG_HOST_LEVEL and others. We should unregister only what we know.
 181    */
 182   xbt_lib_unset(host_lib, name, SURF_CPU_LEVEL, 0);
 183   xbt_lib_unset(host_lib, name, ROUTING_HOST_LEVEL, 0);
 184   xbt_lib_unset(host_lib, name, SURF_WKS_LEVEL, 0);
 185
 186   /* TODO: comment out when VM stroage is implemented. */
 187   // xbt_lib_unset(host_lib, name, SURF_STORAGE_LEVEL, 0);
 188
 189
 190   /* Free the cpu_action of the VM. */
 191   int ret = surf_cpu_model_pm->action_unref(vm_ws->cpu_action);
 192   xbt_assert(ret == 1, "Bug: some resource still remains");
 193
 194   /* Free the cpu resource of the VM. If using power_trace, we will have to
 195    * free other objects than lmm_constraint. */
 196   surf_model_t cpu_model = cpu->generic_resource.model;
 197   lmm_constraint_free(cpu_model->model_private->maxmin_system, cpu->constraint);
 198   {
 199     unsigned long i;
 200     for (i = 0; i < cpu->core; i++) {
 201       void *cnst_id = cpu->constraint_core[i]->id;
 202       lmm_constraint_free(cpu_model->model_private->maxmin_system, cpu->constraint_core[i]);
 203       xbt_free(cnst_id);
 204     }
 205
 206     xbt_free(cpu->constraint_core);
 207   }
 208
 209   surf_resource_free(cpu);
 210
 211   /* Free the network resource of the VM. */
 212         // Nothing has to be done, because net_elmts is just a pointer on the physical one
 213
 214   /* Free the storage resource of the VM. */
 215   // Not relevant yet
 216
 217         /* Free the workstation resource of the VM. */
 218   surf_resource_free(vm_ws);
 219 }
 220
 221 static int vm_ws_get_state(void *ind_vm_ws)
 222 {
 223         return ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state;
 224 }
 225
 226 static void vm_ws_set_state(void *ind_vm_ws, int state)
 227 {
 228          ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state = state;
 229 }
 230
 231 static void vm_ws_suspend(void *ind_vm_ws)
 232 {
 233   workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
 234
 235   surf_action_suspend(vm_ws->cpu_action);
 236
 237   vm_ws->current_state = SURF_VM_STATE_SUSPENDED;
 238 }
 239
 240 static void vm_ws_resume(void *ind_vm_ws)
 241 {
 242   workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
 243
 244   surf_action_resume(vm_ws->cpu_action);
 245
 246   vm_ws->current_state = SURF_VM_STATE_RUNNING;
 247 }
 248
 249 static void vm_ws_save(void *ind_vm_ws)
 250 {
 251   workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
 252
 253   vm_ws->current_state = SURF_VM_STATE_SAVING;
 254
 255   /* FIXME: do something here */
 256   surf_action_suspend(vm_ws->cpu_action);
 257
 258   vm_ws->current_state = SURF_VM_STATE_SAVED;
 259 }
 260
 261 static void vm_ws_restore(void *ind_vm_ws)
 262 {
 263   workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
 264
 265   vm_ws->current_state = SURF_VM_STATE_RESTORING;
 266
 267   /* FIXME: do something here */
 268   surf_action_resume(vm_ws->cpu_action);
 269
 270   vm_ws->current_state = SURF_VM_STATE_RUNNING;
 271 }
 272
 273 static double get_solved_value(surf_action_t cpu_action)
 274 {
 275   lmm_variable_t var = ((surf_action_lmm_t) cpu_action)->variable;
 276
 277   return var->value;
 278 }
 279
 280 /* In the real world, processes on the guest operating system will be somewhat
 281  * degraded due to virtualization overhead. The total CPU share that these
 282  * processes get is smaller than that of the VM process gets on a host
 283  * operating system. */
 284 // const double virt_overhead = 0.95;
 285 const double virt_overhead = 1;
 286
 287 static double vm_ws_share_resources(surf_model_t workstation_model, double now)
 288 {
 289   /* TODO: udpate action's cost with the total cost of processes on the VM. */
 290
 291
 292   /* 0. Make sure that we already calculated the resource share at the physical
 293    * machine layer. */
 294   {
 295     unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, &surf_workstation_model);
 296     unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, &surf_vm_workstation_model);
 297     xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_workstation_model comes before");
 298
 299     /* Another option is that we call sub_ws->share_resource() here. The
 300      * share_resource() function has no side-effect. We can call it here to
 301      * ensure that. */
 302   }
 303
 304
 305   /* 1. Now we know how many resource should be assigned to each virtual
 306    * machine. We update constraints of the virtual machine layer.
 307    *
 308    *
 309    * If we have two virtual machine (VM1 and VM2) on a physical machine (PM1).
 310    *     X1 + X2 = C       (Equation 1)
 311    * where
 312    *    the resource share of VM1: X1
 313    *    the resource share of VM2: X2
 314    *    the capacity of PM1: C
 315    *
 316    * Then, if we have two process (P1 and P2) on VM1.
 317    *     X1_1 + X1_2 = X1  (Equation 2)
 318    * where
 319    *    the resource share of P1: X1_1
 320    *    the resource share of P2: X1_2
 321    *    the capacity of VM1: X1
 322    *
 323    * Equation 1 was solved in the physical machine layer.
 324    * Equation 2 is solved in the virtual machine layer (here).
 325    * X1 must be passed to the virtual machine laye as a constraint value.
 326    *
 327    **/
 328
 329   /* iterate for all hosts including virtual machines */
 330   xbt_lib_cursor_t cursor;
 331   char *key;
 332   void **ind_host;
 333   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 334     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 335     cpu_Cas01_t cpu_cas01 = ind_host[SURF_CPU_LEVEL];
 336
 337     if (!ws_clm03)
 338       continue;
 339     /* skip if it is not a virtual machine */
 340     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 341       continue;
 342     xbt_assert(cpu_cas01, "cpu-less workstation");
 343
 344     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 345     workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 346
 347     double solved_value = get_solved_value(ws_vm2013->cpu_action);
 348     XBT_DEBUG("assign %f to vm %s @ pm %s", solved_value,
 349         ws_clm03->generic_resource.name, ws_vm2013->sub_ws->generic_resource.name);
 350
 351     // TODO: check lmm_update_constraint_bound() works fine instead of the below manual substitution.
 352     // cpu_cas01->constraint->bound = solved_value;
 353     surf_model_t cpu_model = cpu_cas01->generic_resource.model;
 354     xbt_assert(cpu_model == surf_cpu_model_vm);
 355     lmm_system_t vcpu_system = cpu_model->model_private->maxmin_system;
 356     lmm_update_constraint_bound(vcpu_system, cpu_cas01->constraint, virt_overhead * solved_value);
 357   }
 358
 359
 360   /* 2. Calculate resource share at the virtual machine layer. */
 361   double ret = ws_share_resources(workstation_model, now);
 362
 363
 364   /* FIXME: 3. do we have to re-initialize our cpu_action object? */
 365 #if 0
 366   /* iterate for all hosts including virtual machines */
 367   xbt_lib_foreach(host_lib, cursor, key, ind_host) {
 368     workstation_CLM03_t ws_clm03 = ind_host[SURF_WKS_LEVEL];
 369
 370     /* skip if it is not a virtual machine */
 371     if (!ws_clm03)
 372       continue;
 373     if (ws_clm03->generic_resource.model != surf_vm_workstation_model)
 374       continue;
 375
 376     /* It is a virtual machine, so we can cast it to workstation_VM2013_t */
 377     {
 378 #if 0
 379       workstation_VM2013_t ws_vm2013 = (workstation_VM2013_t) ws_clm03;
 380       XBT_INFO("cost %f remains %f start %f finish %f", ws_vm2013->cpu_action->cost,
 381           ws_vm2013->cpu_action->remains,
 382           ws_vm2013->cpu_action->start,
 383           ws_vm2013->cpu_action->finish
 384           );
 385 #endif
 386 #if 0
 387       void *ind_sub_host = xbt_lib_get_elm_or_null(host_lib, ws_vm2013->sub_ws->generic_resource.name);
 388       surf_cpu_model_pm->action_unref(ws_vm2013->cpu_action);
 389       /* FIXME: this means busy loop? */
 390       // ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, GUESTOS_NOISE);
 391       ws_vm2013->cpu_action = surf_cpu_model_pm->extension.cpu.execute(ind_sub_host, 0);
 392 #endif
 393
 394     }
 395   }
 396 #endif
 397
 398
 399   return ret;
 400 }
 401
 402
 403 /*
 404  * A surf level object will be useless in the upper layer. Returing the
 405  * dict_elm of the host.
 406  **/
 407 static void *vm_ws_get_pm(void *ind_vm_ws)
 408 {
 409         workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
 410   const char *sub_ws_name = vm_ws->sub_ws->generic_resource.name;
 411
 412   return xbt_lib_get_elm_or_null(host_lib, sub_ws_name);
 413 }
 414
 415
 416 /* Adding a task to a VM updates the VCPU task on its physical machine. */
 417 static surf_action_t vm_ws_execute(void *workstation, double size)
 418 {
 419   surf_resource_t ws = ((surf_resource_t) surf_workstation_resource_priv(workstation));
 420
 421   xbt_assert(ws->model->type == SURF_MODEL_TYPE_VM_WORKSTATION);
 422   workstation_VM2013_t vm_ws = (workstation_VM2013_t) ws;
 423
 424   double old_cost = vm_ws->cpu_action->cost;
 425   double new_cost = old_cost + size;
 426
 427   XBT_DEBUG("VM(%s)@PM(%s): update dummy action's cost (%f -> %f)",
 428       ws->name, vm_ws->sub_ws->generic_resource.name,
 429       old_cost, new_cost);
 430
 431   vm_ws->cpu_action->cost = new_cost;
 432
 433   return ws_execute(workstation, size);
 434 }
 435
 436 static void vm_ws_action_cancel(surf_action_t action)
 437 {
 438   XBT_CRITICAL("FIXME: Not yet implemented. Reduce dummy action's cost by %f", action->cost);
 439
 440   ws_action_cancel(action);
 441 }
 442
 443
 444 /* Now we can set bound for each task by using MSG_task_set_bound. But, it does
 445  * not work for the dummy CPU action of a VM. Here, we add the set_bound
 446  * function for the dummy CPU action. */
 447 static void vm_ws_set_vm_bound(void *vm, double bound)
 448 {
 449   surf_resource_t ws = ((surf_resource_t) surf_workstation_resource_priv(vm));
 450   xbt_assert(ws->model->type == SURF_MODEL_TYPE_VM_WORKSTATION);
 451   workstation_VM2013_t vm_ws = (workstation_VM2013_t) ws;
 452
 453   surf_action_set_bound(vm_ws->cpu_action, bound);
 454 }
 455
 456
 457 /* set the affinity of a VM to the CPU cores of a PM */
 458 static void vm_ws_set_vm_affinity(void *vm, void *pm, unsigned long mask)
 459 {
 460   surf_resource_t ws = ((surf_resource_t) surf_workstation_resource_priv(vm));
 461   xbt_assert(ws->model->type == SURF_MODEL_TYPE_VM_WORKSTATION);
 462   workstation_VM2013_t vm_ws = (workstation_VM2013_t) ws;
 463
 464   surf_cpu_model_pm->set_affinity(vm_ws->cpu_action, pm, mask);
 465 }
 466
 467
 468 static void surf_vm_workstation_model_init_internal(void)
 469 {
 470   surf_model_t model = surf_model_init();
 471
 472   model->name = "Virtual Workstation";
 473   model->type = SURF_MODEL_TYPE_VM_WORKSTATION;
 474
 475   model->action_unref     = ws_action_unref;
 476   model->action_cancel    = vm_ws_action_cancel;
 477   // model->action_state_set = ws_action_state_set;
 478
 479
 480   model->model_private->share_resources       = vm_ws_share_resources;
 481   model->model_private->resource_used         = ws_resource_used;
 482   model->model_private->update_actions_state  = ws_update_actions_state;
 483   model->model_private->update_resource_state = ws_update_resource_state;
 484   model->model_private->finalize              = ws_finalize;
 485
 486
 487   /* operation for an action, not for VM it self */
 488   model->suspend          = ws_action_suspend;
 489   model->resume           = ws_action_resume;
 490 //   model->is_suspended     = ws_action_is_suspended;
 491 //   model->set_max_duration = ws_action_set_max_duration;
 492   model->set_priority     = ws_action_set_priority;
 493   model->set_bound        = ws_action_set_bound;
 494   model->set_affinity     = ws_action_set_affinity;
 495 // #ifdef HAVE_TRACING
 496 //   model->set_category     = ws_action_set_category;
 497 // #endif
 498   model->get_remains      = ws_action_get_remains;
 499 // #ifdef HAVE_LATENCY_BOUND_TRACKING
 500 //   model->get_latency_limited = ws_get_latency_limited;
 501 // #endif
 502
 503
 504
 505
 506
 507
 508
 509   xbt_assert(surf_cpu_model_vm);
 510   model->extension.workstation.cpu_model = surf_cpu_model_vm;
 511
 512   model->extension.workstation.execute   = vm_ws_execute;
 513   model->extension.workstation.sleep     = ws_action_sleep;
 514   model->extension.workstation.get_state = ws_get_state;
 515   model->extension.workstation.get_speed = ws_get_speed;
 516   // model->extension.workstation.get_available_speed = ws_get_available_speed;
 517
 518   // model->extension.workstation.communicate           = ws_communicate;
 519   // model->extension.workstation.get_route             = ws_get_route;
 520   // model->extension.workstation.execute_parallel_task = ws_execute_parallel_task;
 521   // model->extension.workstation.get_link_bandwidth    = ws_get_link_bandwidth;
 522   // model->extension.workstation.get_link_latency      = ws_get_link_latency;
 523   // model->extension.workstation.link_shared           = ws_link_shared;
 524   // model->extension.workstation.get_properties        = ws_get_properties;
 525
 526   // model->extension.workstation.open   = ws_action_open;
 527   // model->extension.workstation.close  = ws_action_close;
 528   // model->extension.workstation.read   = ws_action_read;
 529   // model->extension.workstation.write  = ws_action_write;
 530   // model->extension.workstation.stat   = ws_action_stat;
 531   // model->extension.workstation.unlink = ws_action_unlink;
 532   // model->extension.workstation.ls     = ws_action_ls;
 533
 534
 535   model->extension.vm_workstation.create        = vm_ws_create;
 536   model->extension.vm_workstation.set_state     = vm_ws_set_state;
 537   model->extension.vm_workstation.get_state     = vm_ws_get_state;
 538   model->extension.vm_workstation.migrate       = vm_ws_migrate;
 539   model->extension.vm_workstation.destroy       = vm_ws_destroy;
 540   model->extension.vm_workstation.suspend       = vm_ws_suspend;
 541   model->extension.vm_workstation.resume        = vm_ws_resume;
 542   model->extension.vm_workstation.save          = vm_ws_save;
 543   model->extension.vm_workstation.restore       = vm_ws_restore;
 544   model->extension.vm_workstation.get_pm        = vm_ws_get_pm;
 545   model->extension.vm_workstation.set_vm_bound  = vm_ws_set_vm_bound;
 546   model->extension.vm_workstation.set_vm_affinity  = vm_ws_set_vm_affinity;
 547
 548   model->extension.workstation.set_params    = ws_set_params;
 549   model->extension.workstation.get_params    = ws_get_params;
 550
 551   surf_vm_workstation_model = model;
 552 }
 553
 554 void surf_vm_workstation_model_init(void)
 555 {
 556   surf_vm_workstation_model_init_internal();
 557   xbt_dynar_push(model_list, &surf_vm_workstation_model);
 558   xbt_dynar_push(model_list_invoke, &surf_vm_workstation_model);
 559 }