arch/ppc64/kernel/lparcfg.c

   1 /*
   2  * PowerPC64 LPAR Configuration Information Driver
   3  *
   4  * Dave Engebretsen engebret@us.ibm.com
   5  *    Copyright (c) 2003 Dave Engebretsen
   6  * Will Schmidt willschm@us.ibm.com
   7  *    SPLPAR updates, Copyright (c) 2003 Will Schmidt IBM Corporation.
   8  *    seq_file updates, Copyright (c) 2004 Will Schmidt IBM Corporation.
   9  * Nathan Lynch nathanl@austin.ibm.com
  10  *    Added lparcfg_write, Copyright (C) 2004 Nathan Lynch IBM Corporation.
  11  *
  12  *      This program is free software; you can redistribute it and/or
  13  *      modify it under the terms of the GNU General Public License
  14  *      as published by the Free Software Foundation; either version
  15  *      2 of the License, or (at your option) any later version.
  16  *
  17  * This driver creates a proc file at /proc/ppc64/lparcfg which contains
  18  * keyword - value pairs that specify the configuration of the partition.
  19  */
  20
  21 #include <linux/config.h>
  22 #include <linux/module.h>
  23 #include <linux/types.h>
  24 #include <linux/errno.h>
  25 #include <linux/proc_fs.h>
  26 #include <linux/init.h>
  27 #include <linux/seq_file.h>
  28 #include <asm/uaccess.h>
  29 #include <asm/iSeries/HvLpConfig.h>
  30 #include <asm/lppaca.h>
  31 #include <asm/hvcall.h>
  32 #include <asm/firmware.h>
  33 #include <asm/rtas.h>
  34 #include <asm/system.h>
  35 #include <asm/time.h>
  36 #include <asm/iSeries/ItExtVpdPanel.h>
  37 #include <asm/prom.h>
  38
  39 #define MODULE_VERS "1.6"
  40 #define MODULE_NAME "lparcfg"
  41
  42 /* #define LPARCFG_DEBUG */
  43
  44 /* find a better place for this function... */
  45 void log_plpar_hcall_return(unsigned long rc, char *tag)
  46 {
  47         if (rc == 0)            /* success, return */
  48                 return;
  49 /* check for null tag ? */
  50         if (rc == H_Hardware)
  51                 printk(KERN_INFO
  52                        "plpar-hcall (%s) failed with hardware fault\n", tag);
  53         else if (rc == H_Function)
  54                 printk(KERN_INFO
  55                        "plpar-hcall (%s) failed; function not allowed\n", tag);
  56         else if (rc == H_Authority)
  57                 printk(KERN_INFO
  58                        "plpar-hcall (%s) failed; not authorized to this function\n",
  59                        tag);
  60         else if (rc == H_Parameter)
  61                 printk(KERN_INFO "plpar-hcall (%s) failed; Bad parameter(s)\n",
  62                        tag);
  63         else
  64                 printk(KERN_INFO
  65                        "plpar-hcall (%s) failed with unexpected rc(0x%lx)\n",
  66                        tag, rc);
  67
  68 }
  69
  70 static struct proc_dir_entry *proc_ppc64_lparcfg;
  71 #define LPARCFG_BUFF_SIZE 4096
  72
  73 #ifdef CONFIG_PPC_ISERIES
  74
  75 /*
  76  * For iSeries legacy systems, the PPA purr function is available from the
  77  * emulated_time_base field in the paca.
  78  */
  79 static unsigned long get_purr(void)
  80 {
  81         unsigned long sum_purr = 0;
  82         int cpu;
  83         struct paca_struct *lpaca;
  84
  85         for_each_cpu(cpu) {
  86                 lpaca = paca + cpu;
  87                 sum_purr += lpaca->lppaca.emulated_time_base;
  88
  89 #ifdef PURR_DEBUG
  90                 printk(KERN_INFO "get_purr for cpu (%d) has value (%ld) \n",
  91                         cpu, lpaca->lppaca.emulated_time_base);
  92 #endif
  93         }
  94         return sum_purr;
  95 }
  96
  97 #define lparcfg_write NULL
  98
  99 /*
 100  * Methods used to fetch LPAR data when running on an iSeries platform.
 101  */
 102 static int lparcfg_data(struct seq_file *m, void *v)
 103 {
 104         unsigned long pool_id, lp_index;
 105         int shared, entitled_capacity, max_entitled_capacity;
 106         int processors, max_processors;
 107         struct paca_struct *lpaca = get_paca();
 108         unsigned long purr = get_purr();
 109
 110         seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
 111
 112         shared = (int)(lpaca->lppaca_ptr->shared_proc);
 113         seq_printf(m, "serial_number=%c%c%c%c%c%c%c\n",
 114                    e2a(xItExtVpdPanel.mfgID[2]),
 115                    e2a(xItExtVpdPanel.mfgID[3]),
 116                    e2a(xItExtVpdPanel.systemSerial[1]),
 117                    e2a(xItExtVpdPanel.systemSerial[2]),
 118                    e2a(xItExtVpdPanel.systemSerial[3]),
 119                    e2a(xItExtVpdPanel.systemSerial[4]),
 120                    e2a(xItExtVpdPanel.systemSerial[5]));
 121
 122         seq_printf(m, "system_type=%c%c%c%c\n",
 123                    e2a(xItExtVpdPanel.machineType[0]),
 124                    e2a(xItExtVpdPanel.machineType[1]),
 125                    e2a(xItExtVpdPanel.machineType[2]),
 126                    e2a(xItExtVpdPanel.machineType[3]));
 127
 128         lp_index = HvLpConfig_getLpIndex();
 129         seq_printf(m, "partition_id=%d\n", (int)lp_index);
 130
 131         seq_printf(m, "system_active_processors=%d\n",
 132                    (int)HvLpConfig_getSystemPhysicalProcessors());
 133
 134         seq_printf(m, "system_potential_processors=%d\n",
 135                    (int)HvLpConfig_getSystemPhysicalProcessors());
 136
 137         processors = (int)HvLpConfig_getPhysicalProcessors();
 138         seq_printf(m, "partition_active_processors=%d\n", processors);
 139
 140         max_processors = (int)HvLpConfig_getMaxPhysicalProcessors();
 141         seq_printf(m, "partition_potential_processors=%d\n", max_processors);
 142
 143         if (shared) {
 144                 entitled_capacity = HvLpConfig_getSharedProcUnits();
 145                 max_entitled_capacity = HvLpConfig_getMaxSharedProcUnits();
 146         } else {
 147                 entitled_capacity = processors * 100;
 148                 max_entitled_capacity = max_processors * 100;
 149         }
 150         seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity);
 151
 152         seq_printf(m, "partition_max_entitled_capacity=%d\n",
 153                    max_entitled_capacity);
 154
 155         if (shared) {
 156                 pool_id = HvLpConfig_getSharedPoolIndex();
 157                 seq_printf(m, "pool=%d\n", (int)pool_id);
 158                 seq_printf(m, "pool_capacity=%d\n",
 159                            (int)(HvLpConfig_getNumProcsInSharedPool(pool_id) *
 160                                  100));
 161                 seq_printf(m, "purr=%ld\n", purr);
 162         }
 163
 164         seq_printf(m, "shared_processor_mode=%d\n", shared);
 165
 166         return 0;
 167 }
 168 #endif                          /* CONFIG_PPC_ISERIES */
 169
 170 #ifdef CONFIG_PPC_PSERIES
 171 /*
 172  * Methods used to fetch LPAR data when running on a pSeries platform.
 173  */
 174
 175 /*
 176  * H_GET_PPP hcall returns info in 4 parms.
 177  *  entitled_capacity,unallocated_capacity,
 178  *  aggregation, resource_capability).
 179  *
 180  *  R4 = Entitled Processor Capacity Percentage.
 181  *  R5 = Unallocated Processor Capacity Percentage.
 182  *  R6 (AABBCCDDEEFFGGHH).
 183  *      XXXX - reserved (0)
 184  *          XXXX - reserved (0)
 185  *              XXXX - Group Number
 186  *                  XXXX - Pool Number.
 187  *  R7 (IIJJKKLLMMNNOOPP).
 188  *      XX - reserved. (0)
 189  *        XX - bit 0-6 reserved (0).   bit 7 is Capped indicator.
 190  *          XX - variable processor Capacity Weight
 191  *            XX - Unallocated Variable Processor Capacity Weight.
 192  *              XXXX - Active processors in Physical Processor Pool.
 193  *                  XXXX  - Processors active on platform.
 194  */
 195 static unsigned int h_get_ppp(unsigned long *entitled,
 196                               unsigned long *unallocated,
 197                               unsigned long *aggregation,
 198                               unsigned long *resource)
 199 {
 200         unsigned long rc;
 201         rc = plpar_hcall_4out(H_GET_PPP, 0, 0, 0, 0, entitled, unallocated,
 202                               aggregation, resource);
 203
 204         log_plpar_hcall_return(rc, "H_GET_PPP");
 205
 206         return rc;
 207 }
 208
 209 static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs)
 210 {
 211         unsigned long rc;
 212         unsigned long dummy;
 213         rc = plpar_hcall(H_PIC, 0, 0, 0, 0, pool_idle_time, num_procs, &dummy);
 214
 215         log_plpar_hcall_return(rc, "H_PIC");
 216 }
 217
 218 static unsigned long get_purr(void);
 219
 220 /* Track sum of all purrs across all processors. This is used to further */
 221 /* calculate usage values by different applications                       */
 222
 223 static unsigned long get_purr(void)
 224 {
 225         unsigned long sum_purr = 0;
 226         int cpu;
 227         struct cpu_usage *cu;
 228
 229         for_each_cpu(cpu) {
 230                 cu = &per_cpu(cpu_usage_array, cpu);
 231                 sum_purr += cu->current_tb;
 232         }
 233         return sum_purr;
 234 }
 235
 236 #define SPLPAR_CHARACTERISTICS_TOKEN 20
 237 #define SPLPAR_MAXLENGTH 1026*(sizeof(char))
 238
 239 /*
 240  * parse_system_parameter_string()
 241  * Retrieve the potential_processors, max_entitled_capacity and friends
 242  * through the get-system-parameter rtas call.  Replace keyword strings as
 243  * necessary.
 244  */
 245 static void parse_system_parameter_string(struct seq_file *m)
 246 {
 247         int call_status;
 248
 249         char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
 250         if (!local_buffer) {
 251                 printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
 252                        __FILE__, __FUNCTION__, __LINE__);
 253                 return;
 254         }
 255
 256         spin_lock(&rtas_data_buf_lock);
 257         memset(rtas_data_buf, 0, SPLPAR_MAXLENGTH);
 258         call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
 259                                 NULL,
 260                                 SPLPAR_CHARACTERISTICS_TOKEN,
 261                                 __pa(rtas_data_buf));
 262         memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH);
 263         spin_unlock(&rtas_data_buf_lock);
 264
 265         if (call_status != 0) {
 266                 printk(KERN_INFO
 267                        "%s %s Error calling get-system-parameter (0x%x)\n",
 268                        __FILE__, __FUNCTION__, call_status);
 269         } else {
 270                 int splpar_strlen;
 271                 int idx, w_idx;
 272                 char *workbuffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
 273                 if (!workbuffer) {
 274                         printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
 275                                __FILE__, __FUNCTION__, __LINE__);
 276                         kfree(local_buffer);
 277                         return;
 278                 }
 279 #ifdef LPARCFG_DEBUG
 280                 printk(KERN_INFO "success calling get-system-parameter \n");
 281 #endif
 282                 splpar_strlen = local_buffer[0] * 16 + local_buffer[1];
 283                 local_buffer += 2;      /* step over strlen value */
 284
 285                 memset(workbuffer, 0, SPLPAR_MAXLENGTH);
 286                 w_idx = 0;
 287                 idx = 0;
 288                 while ((*local_buffer) && (idx < splpar_strlen)) {
 289                         workbuffer[w_idx++] = local_buffer[idx++];
 290                         if ((local_buffer[idx] == ',')
 291                             || (local_buffer[idx] == '\0')) {
 292                                 workbuffer[w_idx] = '\0';
 293                                 if (w_idx) {
 294                                         /* avoid the empty string */
 295                                         seq_printf(m, "%s\n", workbuffer);
 296                                 }
 297                                 memset(workbuffer, 0, SPLPAR_MAXLENGTH);
 298                                 idx++;  /* skip the comma */
 299                                 w_idx = 0;
 300                         } else if (local_buffer[idx] == '=') {
 301                                 /* code here to replace workbuffer contents
 302                                    with different keyword strings */
 303                                 if (0 == strcmp(workbuffer, "MaxEntCap")) {
 304                                         strcpy(workbuffer,
 305                                                "partition_max_entitled_capacity");
 306                                         w_idx = strlen(workbuffer);
 307                                 }
 308                                 if (0 == strcmp(workbuffer, "MaxPlatProcs")) {
 309                                         strcpy(workbuffer,
 310                                                "system_potential_processors");
 311                                         w_idx = strlen(workbuffer);
 312                                 }
 313                         }
 314                 }
 315                 kfree(workbuffer);
 316                 local_buffer -= 2;      /* back up over strlen value */
 317         }
 318         kfree(local_buffer);
 319 }
 320
 321 static int lparcfg_count_active_processors(void);
 322
 323 /* Return the number of processors in the system.
 324  * This function reads through the device tree and counts
 325  * the virtual processors, this does not include threads.
 326  */
 327 static int lparcfg_count_active_processors(void)
 328 {
 329         struct device_node *cpus_dn = NULL;
 330         int count = 0;
 331
 332         while ((cpus_dn = of_find_node_by_type(cpus_dn, "cpu"))) {
 333 #ifdef LPARCFG_DEBUG
 334                 printk(KERN_ERR "cpus_dn %p \n", cpus_dn);
 335 #endif
 336                 count++;
 337         }
 338         return count;
 339 }
 340
 341 static int lparcfg_data(struct seq_file *m, void *v)
 342 {
 343         int partition_potential_processors;
 344         int partition_active_processors;
 345         struct device_node *rootdn;
 346         const char *model = "";
 347         const char *system_id = "";
 348         unsigned int *lp_index_ptr, lp_index = 0;
 349         struct device_node *rtas_node;
 350         int *lrdrp;
 351
 352         rootdn = find_path_device("/");
 353         if (rootdn) {
 354                 model = get_property(rootdn, "model", NULL);
 355                 system_id = get_property(rootdn, "system-id", NULL);
 356                 lp_index_ptr = (unsigned int *)
 357                     get_property(rootdn, "ibm,partition-no", NULL);
 358                 if (lp_index_ptr)
 359                         lp_index = *lp_index_ptr;
 360         }
 361
 362         seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);
 363
 364         seq_printf(m, "serial_number=%s\n", system_id);
 365
 366         seq_printf(m, "system_type=%s\n", model);
 367
 368         seq_printf(m, "partition_id=%d\n", (int)lp_index);
 369
 370         rtas_node = find_path_device("/rtas");
 371         lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity", NULL);
 372
 373         if (lrdrp == NULL) {
 374                 partition_potential_processors = systemcfg->processorCount;
 375         } else {
 376                 partition_potential_processors = *(lrdrp + 4);
 377         }
 378
 379         partition_active_processors = lparcfg_count_active_processors();
 380
 381         if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
 382                 unsigned long h_entitled, h_unallocated;
 383                 unsigned long h_aggregation, h_resource;
 384                 unsigned long pool_idle_time, pool_procs;
 385                 unsigned long purr;
 386
 387                 h_get_ppp(&h_entitled, &h_unallocated, &h_aggregation,
 388                           &h_resource);
 389
 390                 seq_printf(m, "R4=0x%lx\n", h_entitled);
 391                 seq_printf(m, "R5=0x%lx\n", h_unallocated);
 392                 seq_printf(m, "R6=0x%lx\n", h_aggregation);
 393                 seq_printf(m, "R7=0x%lx\n", h_resource);
 394
 395                 purr = get_purr();
 396
 397                 /* this call handles the ibm,get-system-parameter contents */
 398                 parse_system_parameter_string(m);
 399
 400                 seq_printf(m, "partition_entitled_capacity=%ld\n", h_entitled);
 401
 402                 seq_printf(m, "group=%ld\n", (h_aggregation >> 2 * 8) & 0xffff);
 403
 404                 seq_printf(m, "system_active_processors=%ld\n",
 405                            (h_resource >> 0 * 8) & 0xffff);
 406
 407                 /* pool related entries are apropriate for shared configs */
 408                 if (paca[0].lppaca.shared_proc) {
 409
 410                         h_pic(&pool_idle_time, &pool_procs);
 411
 412                         seq_printf(m, "pool=%ld\n",
 413                                    (h_aggregation >> 0 * 8) & 0xffff);
 414
 415                         /* report pool_capacity in percentage */
 416                         seq_printf(m, "pool_capacity=%ld\n",
 417                                    ((h_resource >> 2 * 8) & 0xffff) * 100);
 418
 419                         seq_printf(m, "pool_idle_time=%ld\n", pool_idle_time);
 420
 421                         seq_printf(m, "pool_num_procs=%ld\n", pool_procs);
 422                 }
 423
 424                 seq_printf(m, "unallocated_capacity_weight=%ld\n",
 425                            (h_resource >> 4 * 8) & 0xFF);
 426
 427                 seq_printf(m, "capacity_weight=%ld\n",
 428                            (h_resource >> 5 * 8) & 0xFF);
 429
 430                 seq_printf(m, "capped=%ld\n", (h_resource >> 6 * 8) & 0x01);
 431
 432                 seq_printf(m, "unallocated_capacity=%ld\n", h_unallocated);
 433
 434                 seq_printf(m, "purr=%ld\n", purr);
 435
 436         } else {                /* non SPLPAR case */
 437
 438                 seq_printf(m, "system_active_processors=%d\n",
 439                            partition_potential_processors);
 440
 441                 seq_printf(m, "system_potential_processors=%d\n",
 442                            partition_potential_processors);
 443
 444                 seq_printf(m, "partition_max_entitled_capacity=%d\n",
 445                            partition_potential_processors * 100);
 446
 447                 seq_printf(m, "partition_entitled_capacity=%d\n",
 448                            partition_active_processors * 100);
 449         }
 450
 451         seq_printf(m, "partition_active_processors=%d\n",
 452                    partition_active_processors);
 453
 454         seq_printf(m, "partition_potential_processors=%d\n",
 455                    partition_potential_processors);
 456
 457         seq_printf(m, "shared_processor_mode=%d\n", paca[0].lppaca.shared_proc);
 458
 459         return 0;
 460 }
 461
 462 /*
 463  * Interface for changing system parameters (variable capacity weight
 464  * and entitled capacity).  Format of input is "param_name=value";
 465  * anything after value is ignored.  Valid parameters at this time are
 466  * "partition_entitled_capacity" and "capacity_weight".  We use
 467  * H_SET_PPP to alter parameters.
 468  *
 469  * This function should be invoked only on systems with
 470  * FW_FEATURE_SPLPAR.
 471  */
 472 static ssize_t lparcfg_write(struct file *file, const char __user * buf,
 473                              size_t count, loff_t * off)
 474 {
 475         char *kbuf;
 476         char *tmp;
 477         u64 new_entitled, *new_entitled_ptr = &new_entitled;
 478         u8 new_weight, *new_weight_ptr = &new_weight;
 479
 480         unsigned long current_entitled; /* parameters for h_get_ppp */
 481         unsigned long dummy;
 482         unsigned long resource;
 483         u8 current_weight;
 484
 485         ssize_t retval = -ENOMEM;
 486
 487         kbuf = kmalloc(count, GFP_KERNEL);
 488         if (!kbuf)
 489                 goto out;
 490
 491         retval = -EFAULT;
 492         if (copy_from_user(kbuf, buf, count))
 493                 goto out;
 494
 495         retval = -EINVAL;
 496         kbuf[count - 1] = '\0';
 497         tmp = strchr(kbuf, '=');
 498         if (!tmp)
 499                 goto out;
 500
 501         *tmp++ = '\0';
 502
 503         if (!strcmp(kbuf, "partition_entitled_capacity")) {
 504                 char *endp;
 505                 *new_entitled_ptr = (u64) simple_strtoul(tmp, &endp, 10);
 506                 if (endp == tmp)
 507                         goto out;
 508                 new_weight_ptr = &current_weight;
 509         } else if (!strcmp(kbuf, "capacity_weight")) {
 510                 char *endp;
 511                 *new_weight_ptr = (u8) simple_strtoul(tmp, &endp, 10);
 512                 if (endp == tmp)
 513                         goto out;
 514                 new_entitled_ptr = &current_entitled;
 515         } else
 516                 goto out;
 517
 518         /* Get our current parameters */
 519         retval = h_get_ppp(&current_entitled, &dummy, &dummy, &resource);
 520         if (retval) {
 521                 retval = -EIO;
 522                 goto out;
 523         }
 524
 525         current_weight = (resource >> 5 * 8) & 0xFF;
 526
 527         pr_debug("%s: current_entitled = %lu, current_weight = %lu\n",
 528                  __FUNCTION__, current_entitled, current_weight);
 529
 530         pr_debug("%s: new_entitled = %lu, new_weight = %lu\n",
 531                  __FUNCTION__, *new_entitled_ptr, *new_weight_ptr);
 532
 533         retval = plpar_hcall_norets(H_SET_PPP, *new_entitled_ptr,
 534                                     *new_weight_ptr);
 535
 536         if (retval == H_Success || retval == H_Constrained) {
 537                 retval = count;
 538         } else if (retval == H_Busy) {
 539                 retval = -EBUSY;
 540         } else if (retval == H_Hardware) {
 541                 retval = -EIO;
 542         } else if (retval == H_Parameter) {
 543                 retval = -EINVAL;
 544         } else {
 545                 printk(KERN_WARNING "%s: received unknown hv return code %ld",
 546                        __FUNCTION__, retval);
 547                 retval = -EIO;
 548         }
 549
 550       out:
 551         kfree(kbuf);
 552         return retval;
 553 }
 554
 555 #endif                          /* CONFIG_PPC_PSERIES */
 556
 557 static int lparcfg_open(struct inode *inode, struct file *file)
 558 {
 559         return single_open(file, lparcfg_data, NULL);
 560 }
 561
 562 struct file_operations lparcfg_fops = {
 563       .owner    = THIS_MODULE,
 564       .read     = seq_read,
 565       .open     = lparcfg_open,
 566       .release  = single_release,
 567 };
 568
 569 int __init lparcfg_init(void)
 570 {
 571         struct proc_dir_entry *ent;
 572         mode_t mode = S_IRUSR | S_IRGRP | S_IROTH;
 573
 574         /* Allow writing if we have FW_FEATURE_SPLPAR */
 575         if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
 576                 lparcfg_fops.write = lparcfg_write;
 577                 mode |= S_IWUSR;
 578         }
 579
 580         ent = create_proc_entry("ppc64/lparcfg", mode, NULL);
 581         if (ent) {
 582                 ent->proc_fops = &lparcfg_fops;
 583                 ent->data = kmalloc(LPARCFG_BUFF_SIZE, GFP_KERNEL);
 584                 if (!ent->data) {
 585                         printk(KERN_ERR
 586                                "Failed to allocate buffer for lparcfg\n");
 587                         remove_proc_entry("lparcfg", ent->parent);
 588                         return -ENOMEM;
 589                 }
 590         } else {
 591                 printk(KERN_ERR "Failed to create ppc64/lparcfg\n");
 592                 return -EIO;
 593         }
 594
 595         proc_ppc64_lparcfg = ent;
 596         return 0;
 597 }
 598
 599 void __exit lparcfg_cleanup(void)
 600 {
 601         if (proc_ppc64_lparcfg) {
 602                 if (proc_ppc64_lparcfg->data) {
 603                         kfree(proc_ppc64_lparcfg->data);
 604                 }
 605                 remove_proc_entry("lparcfg", proc_ppc64_lparcfg->parent);
 606         }
 607 }
 608
 609 module_init(lparcfg_init);
 610 module_exit(lparcfg_cleanup);
 611 MODULE_DESCRIPTION("Interface for LPAR configuration data");
 612 MODULE_AUTHOR("Dave Engebretsen");
 613 MODULE_LICENSE("GPL");