fs/proc/proc_misc.c

   1 /*
   2  *  linux/fs/proc/proc_misc.c
   3  *
   4  *  linux/fs/proc/array.c
   5  *  Copyright (C) 1992  by Linus Torvalds
   6  *  based on ideas by Darren Senn
   7  *
   8  *  This used to be the part of array.c. See the rest of history and credits
   9  *  there. I took this into a separate file and switched the thing to generic
  10  *  proc_file_inode_operations, leaving in array.c only per-process stuff.
  11  *  Inumbers allocation made dynamic (via create_proc_entry()).  AV, May 1999.
  12  *
  13  * Changes:
  14  * Fulton Green      :  Encapsulated position metric calculations.
  15  *                      <kernel@FultonGreen.com>
  16  */
  17
  18 #include <linux/types.h>
  19 #include <linux/errno.h>
  20 #include <linux/time.h>
  21 #include <linux/kernel.h>
  22 #include <linux/kernel_stat.h>
  23 #include <linux/tty.h>
  24 #include <linux/string.h>
  25 #include <linux/mman.h>
  26 #include <linux/proc_fs.h>
  27 #include <linux/ioport.h>
  28 #include <linux/config.h>
  29 #include <linux/mm.h>
  30 #include <linux/mmzone.h>
  31 #include <linux/pagemap.h>
  32 #include <linux/swap.h>
  33 #include <linux/slab.h>
  34 #include <linux/smp.h>
  35 #include <linux/signal.h>
  36 #include <linux/module.h>
  37 #include <linux/init.h>
  38 #include <linux/smp_lock.h>
  39 #include <linux/seq_file.h>
  40 #include <linux/times.h>
  41 #include <linux/profile.h>
  42 #include <linux/blkdev.h>
  43 #include <linux/hugetlb.h>
  44 #include <linux/jiffies.h>
  45 #include <linux/sysrq.h>
  46 #include <linux/vmalloc.h>
  47 #include <linux/vinline.h>
  48 #include <asm/uaccess.h>
  49 #include <asm/pgtable.h>
  50 #include <asm/io.h>
  51 #include <asm/pgalloc.h>
  52 #include <asm/tlb.h>
  53 #include <asm/div64.h>
  54
  55 #define LOAD_INT(x) ((x) >> FSHIFT)
  56 #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
  57 /*
  58  * Warning: stuff below (imported functions) assumes that its output will fit
  59  * into one page. For some of those functions it may be wrong. Moreover, we
  60  * have a way to deal with that gracefully. Right now I used straightforward
  61  * wrappers, but this needs further analysis wrt potential overflows.
  62  */
  63 extern int get_hardware_list(char *);
  64 extern int get_stram_list(char *);
  65 extern int get_chrdev_list(char *);
  66 extern int get_blkdev_list(char *);
  67 extern int get_filesystem_list(char *);
  68 extern int get_exec_domain_list(char *);
  69 extern int get_dma_list(char *);
  70 extern int get_locks_status (char *, char **, off_t, int);
  71 #ifdef CONFIG_SGI_DS1286
  72 extern int get_ds1286_status(char *);
  73 #endif
  74
  75 static int proc_calc_metrics(char *page, char **start, off_t off,
  76                                  int count, int *eof, int len)
  77 {
  78         if (len <= off+count) *eof = 1;
  79         *start = page + off;
  80         len -= off;
  81         if (len>count) len = count;
  82         if (len<0) len = 0;
  83         return len;
  84 }
  85
  86 static int loadavg_read_proc(char *page, char **start, off_t off,
  87                                  int count, int *eof, void *data)
  88 {
  89         int a, b, c;
  90         int len;
  91
  92         a = avenrun[0] + (FIXED_1/200);
  93         b = avenrun[1] + (FIXED_1/200);
  94         c = avenrun[2] + (FIXED_1/200);
  95         len = sprintf(page,"%d.%02d %d.%02d %d.%02d %ld/%d %d\n",
  96                 LOAD_INT(a), LOAD_FRAC(a),
  97                 LOAD_INT(b), LOAD_FRAC(b),
  98                 LOAD_INT(c), LOAD_FRAC(c),
  99                 nr_running(), nr_threads, last_pid);
 100         return proc_calc_metrics(page, start, off, count, eof, len);
 101 }
 102
 103 struct vmalloc_info {
 104         unsigned long used;
 105         unsigned long largest_chunk;
 106 };
 107
 108 static struct vmalloc_info get_vmalloc_info(void)
 109 {
 110         unsigned long prev_end = VMALLOC_START;
 111         struct vm_struct* vma;
 112         struct vmalloc_info vmi;
 113         vmi.used = 0;
 114
 115         read_lock(&vmlist_lock);
 116
 117         if(!vmlist)
 118                 vmi.largest_chunk = (VMALLOC_END-VMALLOC_START);
 119         else
 120                 vmi.largest_chunk = 0;
 121
 122         for (vma = vmlist; vma; vma = vma->next) {
 123                 unsigned long free_area_size =
 124                         (unsigned long)vma->addr - prev_end;
 125                 vmi.used += vma->size;
 126                 if (vmi.largest_chunk < free_area_size )
 127
 128                         vmi.largest_chunk = free_area_size;
 129                 prev_end = vma->size + (unsigned long)vma->addr;
 130         }
 131         if(VMALLOC_END-prev_end > vmi.largest_chunk)
 132                 vmi.largest_chunk = VMALLOC_END-prev_end;
 133
 134         read_unlock(&vmlist_lock);
 135         return vmi;
 136 }
 137
 138 static int uptime_read_proc(char *page, char **start, off_t off,
 139                                  int count, int *eof, void *data)
 140 {
 141         struct timespec uptime;
 142         struct timespec idle;
 143         int len;
 144         u64 idle_jiffies = init_task.utime + init_task.stime;
 145
 146         do_posix_clock_monotonic_gettime(&uptime);
 147         jiffies_to_timespec(idle_jiffies, &idle);
 148         if (vx_flags(VXF_VIRT_UPTIME, 0))
 149                 vx_vsi_uptime(&uptime, &idle);
 150
 151         len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
 152                         (unsigned long) uptime.tv_sec,
 153                         (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
 154                         (unsigned long) idle.tv_sec,
 155                         (idle.tv_nsec / (NSEC_PER_SEC / 100)));
 156
 157         return proc_calc_metrics(page, start, off, count, eof, len);
 158 }
 159
 160 static int meminfo_read_proc(char *page, char **start, off_t off,
 161                                  int count, int *eof, void *data)
 162 {
 163         struct sysinfo i;
 164         int len, committed;
 165         struct page_state ps;
 166         unsigned long inactive;
 167         unsigned long active;
 168         unsigned long free;
 169         unsigned long vmtot;
 170         struct vmalloc_info vmi;
 171
 172         get_page_state(&ps);
 173         get_zone_counts(&active, &inactive, &free);
 174
 175 /*
 176  * display in kilobytes.
 177  */
 178 #define K(x) ((x) << (PAGE_SHIFT - 10))
 179         si_meminfo(&i);
 180         si_swapinfo(&i);
 181         committed = atomic_read(&vm_committed_space);
 182
 183         vmtot = (VMALLOC_END-VMALLOC_START)>>10;
 184         vmi = get_vmalloc_info();
 185         vmi.used >>= 10;
 186         vmi.largest_chunk >>= 10;
 187
 188         /*
 189          * Tagged format, for easy grepping and expansion.
 190          */
 191         len = sprintf(page,
 192                 "MemTotal:     %8lu kB\n"
 193                 "MemFree:      %8lu kB\n"
 194                 "Buffers:      %8lu kB\n"
 195                 "Cached:       %8lu kB\n"
 196                 "SwapCached:   %8lu kB\n"
 197                 "Active:       %8lu kB\n"
 198                 "Inactive:     %8lu kB\n"
 199                 "HighTotal:    %8lu kB\n"
 200                 "HighFree:     %8lu kB\n"
 201                 "LowTotal:     %8lu kB\n"
 202                 "LowFree:      %8lu kB\n"
 203                 "SwapTotal:    %8lu kB\n"
 204                 "SwapFree:     %8lu kB\n"
 205                 "Dirty:        %8lu kB\n"
 206                 "Writeback:    %8lu kB\n"
 207                 "Mapped:       %8lu kB\n"
 208                 "Slab:         %8lu kB\n"
 209                 "Committed_AS: %8u kB\n"
 210                 "PageTables:   %8lu kB\n"
 211                 "VmallocTotal: %8lu kB\n"
 212                 "VmallocUsed:  %8lu kB\n"
 213                 "VmallocChunk: %8lu kB\n",
 214                 K(i.totalram),
 215                 K(i.freeram),
 216                 K(i.bufferram),
 217                 K(get_page_cache_size()-total_swapcache_pages-i.bufferram),
 218                 K(total_swapcache_pages),
 219                 K(active),
 220                 K(inactive),
 221                 K(i.totalhigh),
 222                 K(i.freehigh),
 223                 K(i.totalram-i.totalhigh),
 224                 K(i.freeram-i.freehigh),
 225                 K(i.totalswap),
 226                 K(i.freeswap),
 227                 K(ps.nr_dirty),
 228                 K(ps.nr_writeback),
 229                 K(ps.nr_mapped),
 230                 K(ps.nr_slab),
 231                 K(committed),
 232                 K(ps.nr_page_table_pages),
 233                 vmtot,
 234                 vmi.used,
 235                 vmi.largest_chunk
 236                 );
 237
 238                 len += hugetlb_report_meminfo(page + len);
 239
 240         return proc_calc_metrics(page, start, off, count, eof, len);
 241 #undef K
 242 }
 243
 244 extern struct seq_operations fragmentation_op;
 245 static int fragmentation_open(struct inode *inode, struct file *file)
 246 {
 247         (void)inode;
 248         return seq_open(file, &fragmentation_op);
 249 }
 250
 251 static struct file_operations fragmentation_file_operations = {
 252         .open           = fragmentation_open,
 253         .read           = seq_read,
 254         .llseek         = seq_lseek,
 255         .release        = seq_release,
 256 };
 257
 258 static int version_read_proc(char *page, char **start, off_t off,
 259                                  int count, int *eof, void *data)
 260 {
 261         extern char *linux_banner;
 262         int len;
 263
 264         strcpy(page, linux_banner);
 265         len = strlen(page);
 266         return proc_calc_metrics(page, start, off, count, eof, len);
 267 }
 268
 269 extern struct seq_operations cpuinfo_op;
 270 static int cpuinfo_open(struct inode *inode, struct file *file)
 271 {
 272         return seq_open(file, &cpuinfo_op);
 273 }
 274 static struct file_operations proc_cpuinfo_operations = {
 275         .open           = cpuinfo_open,
 276         .read           = seq_read,
 277         .llseek         = seq_lseek,
 278         .release        = seq_release,
 279 };
 280
 281 extern struct seq_operations vmstat_op;
 282 static int vmstat_open(struct inode *inode, struct file *file)
 283 {
 284         return seq_open(file, &vmstat_op);
 285 }
 286 static struct file_operations proc_vmstat_file_operations = {
 287         .open           = vmstat_open,
 288         .read           = seq_read,
 289         .llseek         = seq_lseek,
 290         .release        = seq_release,
 291 };
 292
 293 #ifdef CONFIG_PROC_HARDWARE
 294 static int hardware_read_proc(char *page, char **start, off_t off,
 295                                  int count, int *eof, void *data)
 296 {
 297         int len = get_hardware_list(page);
 298         return proc_calc_metrics(page, start, off, count, eof, len);
 299 }
 300 #endif
 301
 302 #ifdef CONFIG_STRAM_PROC
 303 static int stram_read_proc(char *page, char **start, off_t off,
 304                                  int count, int *eof, void *data)
 305 {
 306         int len = get_stram_list(page);
 307         return proc_calc_metrics(page, start, off, count, eof, len);
 308 }
 309 #endif
 310
 311 extern struct seq_operations partitions_op;
 312 static int partitions_open(struct inode *inode, struct file *file)
 313 {
 314         return seq_open(file, &partitions_op);
 315 }
 316 static struct file_operations proc_partitions_operations = {
 317         .open           = partitions_open,
 318         .read           = seq_read,
 319         .llseek         = seq_lseek,
 320         .release        = seq_release,
 321 };
 322
 323 extern struct seq_operations diskstats_op;
 324 static int diskstats_open(struct inode *inode, struct file *file)
 325 {
 326         return seq_open(file, &diskstats_op);
 327 }
 328 static struct file_operations proc_diskstats_operations = {
 329         .open           = diskstats_open,
 330         .read           = seq_read,
 331         .llseek         = seq_lseek,
 332         .release        = seq_release,
 333 };
 334
 335 #ifdef CONFIG_MODULES
 336 extern struct seq_operations modules_op;
 337 static int modules_open(struct inode *inode, struct file *file)
 338 {
 339         return seq_open(file, &modules_op);
 340 }
 341 static struct file_operations proc_modules_operations = {
 342         .open           = modules_open,
 343         .read           = seq_read,
 344         .llseek         = seq_lseek,
 345         .release        = seq_release,
 346 };
 347 #endif
 348
 349 extern struct seq_operations slabinfo_op;
 350 extern ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
 351 static int slabinfo_open(struct inode *inode, struct file *file)
 352 {
 353         return seq_open(file, &slabinfo_op);
 354 }
 355 static struct file_operations proc_slabinfo_operations = {
 356         .open           = slabinfo_open,
 357         .read           = seq_read,
 358         .write          = slabinfo_write,
 359         .llseek         = seq_lseek,
 360         .release        = seq_release,
 361 };
 362
 363 int show_stat(struct seq_file *p, void *v)
 364 {
 365         int i;
 366         extern unsigned long total_forks;
 367         unsigned long jif;
 368         u64     sum = 0, user = 0, nice = 0, system = 0,
 369                 idle = 0, iowait = 0, irq = 0, softirq = 0;
 370
 371         jif = - wall_to_monotonic.tv_sec;
 372         if (wall_to_monotonic.tv_nsec)
 373                 --jif;
 374
 375         for_each_cpu(i) {
 376                 int j;
 377
 378                 user += kstat_cpu(i).cpustat.user;
 379                 nice += kstat_cpu(i).cpustat.nice;
 380                 system += kstat_cpu(i).cpustat.system;
 381                 idle += kstat_cpu(i).cpustat.idle;
 382                 iowait += kstat_cpu(i).cpustat.iowait;
 383                 irq += kstat_cpu(i).cpustat.irq;
 384                 softirq += kstat_cpu(i).cpustat.softirq;
 385                 for (j = 0 ; j < NR_IRQS ; j++)
 386                         sum += kstat_cpu(i).irqs[j];
 387         }
 388
 389         seq_printf(p, "cpu  %llu %llu %llu %llu %llu %llu %llu\n",
 390                 (unsigned long long)jiffies_64_to_clock_t(user),
 391                 (unsigned long long)jiffies_64_to_clock_t(nice),
 392                 (unsigned long long)jiffies_64_to_clock_t(system),
 393                 (unsigned long long)jiffies_64_to_clock_t(idle),
 394                 (unsigned long long)jiffies_64_to_clock_t(iowait),
 395                 (unsigned long long)jiffies_64_to_clock_t(irq),
 396                 (unsigned long long)jiffies_64_to_clock_t(softirq));
 397         for_each_cpu(i) {
 398
 399                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
 400                 user = kstat_cpu(i).cpustat.user;
 401                 nice = kstat_cpu(i).cpustat.nice;
 402                 system = kstat_cpu(i).cpustat.system;
 403                 idle = kstat_cpu(i).cpustat.idle;
 404                 iowait = kstat_cpu(i).cpustat.iowait;
 405                 irq = kstat_cpu(i).cpustat.irq;
 406                 softirq = kstat_cpu(i).cpustat.softirq;
 407                 seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu\n",
 408                         i,
 409                         (unsigned long long)jiffies_64_to_clock_t(user),
 410                         (unsigned long long)jiffies_64_to_clock_t(nice),
 411                         (unsigned long long)jiffies_64_to_clock_t(system),
 412                         (unsigned long long)jiffies_64_to_clock_t(idle),
 413                         (unsigned long long)jiffies_64_to_clock_t(iowait),
 414                         (unsigned long long)jiffies_64_to_clock_t(irq),
 415                         (unsigned long long)jiffies_64_to_clock_t(softirq));
 416         }
 417         seq_printf(p, "intr %llu", (unsigned long long)sum);
 418
 419 #if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA)
 420         for (i = 0; i < NR_IRQS; i++)
 421                 seq_printf(p, " %u", kstat_irqs(i));
 422 #endif
 423
 424         seq_printf(p,
 425                 "\nctxt %llu\n"
 426                 "btime %lu\n"
 427                 "processes %lu\n"
 428                 "procs_running %lu\n"
 429                 "procs_blocked %lu\n",
 430                 nr_context_switches(),
 431                 (unsigned long)jif,
 432                 total_forks,
 433                 nr_running(),
 434                 nr_iowait());
 435
 436         return 0;
 437 }
 438
 439 static int stat_open(struct inode *inode, struct file *file)
 440 {
 441         unsigned size = 4096 * (1 + num_possible_cpus() / 32);
 442         char *buf;
 443         struct seq_file *m;
 444         int res;
 445
 446         /* don't ask for more than the kmalloc() max size, currently 128 KB */
 447         if (size > 128 * 1024)
 448                 size = 128 * 1024;
 449         buf = kmalloc(size, GFP_KERNEL);
 450         if (!buf)
 451                 return -ENOMEM;
 452
 453         res = single_open(file, show_stat, NULL);
 454         if (!res) {
 455                 m = file->private_data;
 456                 m->buf = buf;
 457                 m->size = size;
 458         } else
 459                 kfree(buf);
 460         return res;
 461 }
 462 static struct file_operations proc_stat_operations = {
 463         .open           = stat_open,
 464         .read           = seq_read,
 465         .llseek         = seq_lseek,
 466         .release        = single_release,
 467 };
 468
 469 static int devices_read_proc(char *page, char **start, off_t off,
 470                                  int count, int *eof, void *data)
 471 {
 472         int len = get_chrdev_list(page);
 473         len += get_blkdev_list(page+len);
 474         return proc_calc_metrics(page, start, off, count, eof, len);
 475 }
 476
 477 /*
 478  * /proc/interrupts
 479  */
 480 static void *int_seq_start(struct seq_file *f, loff_t *pos)
 481 {
 482         return (*pos <= NR_IRQS) ? pos : NULL;
 483 }
 484
 485 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
 486 {
 487         (*pos)++;
 488         if (*pos > NR_IRQS)
 489                 return NULL;
 490         return pos;
 491 }
 492
 493 static void int_seq_stop(struct seq_file *f, void *v)
 494 {
 495         /* Nothing to do */
 496 }
 497
 498
 499 extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
 500 static struct seq_operations int_seq_ops = {
 501         .start = int_seq_start,
 502         .next  = int_seq_next,
 503         .stop  = int_seq_stop,
 504         .show  = show_interrupts
 505 };
 506
 507 int interrupts_open(struct inode *inode, struct file *filp)
 508 {
 509         return seq_open(filp, &int_seq_ops);
 510 }
 511
 512 static struct file_operations proc_interrupts_operations = {
 513         .open           = interrupts_open,
 514         .read           = seq_read,
 515         .llseek         = seq_lseek,
 516         .release        = seq_release,
 517 };
 518
 519 static int filesystems_read_proc(char *page, char **start, off_t off,
 520                                  int count, int *eof, void *data)
 521 {
 522         int len = get_filesystem_list(page);
 523         return proc_calc_metrics(page, start, off, count, eof, len);
 524 }
 525
 526 static int cmdline_read_proc(char *page, char **start, off_t off,
 527                                  int count, int *eof, void *data)
 528 {
 529         extern char saved_command_line[];
 530         int len;
 531
 532         len = sprintf(page, "%s\n", saved_command_line);
 533         return proc_calc_metrics(page, start, off, count, eof, len);
 534 }
 535
 536 #ifdef CONFIG_SGI_DS1286
 537 static int ds1286_read_proc(char *page, char **start, off_t off,
 538                                  int count, int *eof, void *data)
 539 {
 540         int len = get_ds1286_status(page);
 541         return proc_calc_metrics(page, start, off, count, eof, len);
 542 }
 543 #endif
 544
 545 static int locks_read_proc(char *page, char **start, off_t off,
 546                                  int count, int *eof, void *data)
 547 {
 548         int len = get_locks_status(page, start, off, count);
 549
 550         if (len < count)
 551                 *eof = 1;
 552         return len;
 553 }
 554
 555 static int execdomains_read_proc(char *page, char **start, off_t off,
 556                                  int count, int *eof, void *data)
 557 {
 558         int len = get_exec_domain_list(page);
 559         return proc_calc_metrics(page, start, off, count, eof, len);
 560 }
 561
 562 /*
 563  * This function accesses profiling information. The returned data is
 564  * binary: the sampling step and the actual contents of the profile
 565  * buffer. Use of the program readprofile is recommended in order to
 566  * get meaningful info out of these data.
 567  */
 568 static ssize_t
 569 read_profile(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 570 {
 571         unsigned long p = *ppos;
 572         ssize_t read;
 573         char * pnt;
 574         unsigned int sample_step = 1 << prof_shift;
 575
 576         if (p >= (prof_len+1)*sizeof(unsigned int))
 577                 return 0;
 578         if (count > (prof_len+1)*sizeof(unsigned int) - p)
 579                 count = (prof_len+1)*sizeof(unsigned int) - p;
 580         read = 0;
 581
 582         while (p < sizeof(unsigned int) && count > 0) {
 583                 put_user(*((char *)(&sample_step)+p),buf);
 584                 buf++; p++; count--; read++;
 585         }
 586         pnt = (char *)prof_buffer + p - sizeof(unsigned int);
 587         if (copy_to_user(buf,(void *)pnt,count))
 588                 return -EFAULT;
 589         read += count;
 590         *ppos += read;
 591         return read;
 592 }
 593
 594 /*
 595  * Writing to /proc/profile resets the counters
 596  *
 597  * Writing a 'profiling multiplier' value into it also re-sets the profiling
 598  * interrupt frequency, on architectures that support this.
 599  */
 600 static ssize_t write_profile(struct file *file, const char __user *buf,
 601                              size_t count, loff_t *ppos)
 602 {
 603 #ifdef CONFIG_SMP
 604         extern int setup_profiling_timer (unsigned int multiplier);
 605
 606         if (count == sizeof(int)) {
 607                 unsigned int multiplier;
 608
 609                 if (copy_from_user(&multiplier, buf, sizeof(int)))
 610                         return -EFAULT;
 611
 612                 if (setup_profiling_timer(multiplier))
 613                         return -EINVAL;
 614         }
 615 #endif
 616
 617         memset(prof_buffer, 0, prof_len * sizeof(*prof_buffer));
 618         return count;
 619 }
 620
 621 static struct file_operations proc_profile_operations = {
 622         .read           = read_profile,
 623         .write          = write_profile,
 624 };
 625
 626 #ifdef CONFIG_MAGIC_SYSRQ
 627 /*
 628  * writing 'C' to /proc/sysrq-trigger is like sysrq-C
 629  */
 630 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
 631                                    size_t count, loff_t *ppos)
 632 {
 633         if (count) {
 634                 char c;
 635
 636                 if (get_user(c, buf))
 637                         return -EFAULT;
 638                 handle_sysrq(c, NULL, NULL);
 639         }
 640         return count;
 641 }
 642
 643 static struct file_operations proc_sysrq_trigger_operations = {
 644         .write          = write_sysrq_trigger,
 645 };
 646 #endif
 647
 648 struct proc_dir_entry *proc_root_kcore;
 649
 650 static void create_seq_entry(char *name, mode_t mode, struct file_operations *f)
 651 {
 652         struct proc_dir_entry *entry;
 653         entry = create_proc_entry(name, mode, NULL);
 654         if (entry)
 655                 entry->proc_fops = f;
 656 }
 657
 658 void __init proc_misc_init(void)
 659 {
 660         struct proc_dir_entry *entry;
 661         static struct {
 662                 char *name;
 663                 int (*read_proc)(char*,char**,off_t,int,int*,void*);
 664         } *p, simple_ones[] = {
 665                 {"loadavg",     loadavg_read_proc},
 666                 {"uptime",      uptime_read_proc},
 667                 {"meminfo",     meminfo_read_proc},
 668                 {"version",     version_read_proc},
 669 #ifdef CONFIG_PROC_HARDWARE
 670                 {"hardware",    hardware_read_proc},
 671 #endif
 672 #ifdef CONFIG_STRAM_PROC
 673                 {"stram",       stram_read_proc},
 674 #endif
 675                 {"devices",     devices_read_proc},
 676                 {"filesystems", filesystems_read_proc},
 677                 {"cmdline",     cmdline_read_proc},
 678 #ifdef CONFIG_SGI_DS1286
 679                 {"rtc",         ds1286_read_proc},
 680 #endif
 681                 {"locks",       locks_read_proc},
 682                 {"execdomains", execdomains_read_proc},
 683                 {NULL,}
 684         };
 685         for (p = simple_ones; p->name; p++)
 686                 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
 687
 688         proc_symlink("mounts", NULL, "self/mounts");
 689
 690         /* And now for trickier ones */
 691         entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
 692         if (entry)
 693                 entry->proc_fops = &proc_kmsg_operations;
 694         create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
 695         create_seq_entry("partitions", 0, &proc_partitions_operations);
 696         create_seq_entry("stat", 0, &proc_stat_operations);
 697         create_seq_entry("interrupts", 0, &proc_interrupts_operations);
 698         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
 699         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
 700         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
 701         create_seq_entry("diskstats", 0, &proc_diskstats_operations);
 702 #ifdef CONFIG_MODULES
 703         create_seq_entry("modules", 0, &proc_modules_operations);
 704 #endif
 705 #ifdef CONFIG_PROC_KCORE
 706         proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
 707         if (proc_root_kcore) {
 708                 proc_root_kcore->proc_fops = &proc_kcore_operations;
 709                 proc_root_kcore->size =
 710                                 (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
 711         }
 712 #endif
 713         if (prof_on) {
 714                 entry = create_proc_entry("profile", S_IWUSR | S_IRUGO, NULL);
 715                 if (entry) {
 716                         entry->proc_fops = &proc_profile_operations;
 717                         entry->size = (1+prof_len) * sizeof(unsigned int);
 718                 }
 719         }
 720 #ifdef CONFIG_MAGIC_SYSRQ
 721         entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
 722         if (entry)
 723                 entry->proc_fops = &proc_sysrq_trigger_operations;
 724 #endif
 725 #ifdef CONFIG_PPC32
 726         {
 727                 extern struct file_operations ppc_htab_operations;
 728                 entry = create_proc_entry("ppc_htab", S_IRUGO|S_IWUSR, NULL);
 729                 if (entry)
 730                         entry->proc_fops = &ppc_htab_operations;
 731         }
 732 #endif
 733 }