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/fs.h>
  24 #include <linux/tty.h>
  25 #include <linux/string.h>
  26 #include <linux/mman.h>
  27 #include <linux/proc_fs.h>
  28 #include <linux/ioport.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/crash_dump.h>
  48 #include <asm/uaccess.h>
  49 #include <asm/pgtable.h>
  50 #include <asm/io.h>
  51 #include <asm/tlb.h>
  52 #include <asm/div64.h>
  53 #include "internal.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_filesystem_list(char *);
  66 extern int get_exec_domain_list(char *);
  67 extern int get_dma_list(char *);
  68 extern int get_locks_status (char *, char **, off_t, int);
  69
  70 static int proc_calc_metrics(char *page, char **start, off_t off,
  71                                  int count, int *eof, int len)
  72 {
  73         if (len <= off+count) *eof = 1;
  74         *start = page + off;
  75         len -= off;
  76         if (len>count) len = count;
  77         if (len<0) len = 0;
  78         return len;
  79 }
  80
  81 static int loadavg_read_proc(char *page, char **start, off_t off,
  82                                  int count, int *eof, void *data)
  83 {
  84         int a, b, c;
  85         int len;
  86
  87         a = avenrun[0] + (FIXED_1/200);
  88         b = avenrun[1] + (FIXED_1/200);
  89         c = avenrun[2] + (FIXED_1/200);
  90         len = sprintf(page,"%d.%02d %d.%02d %d.%02d %ld/%d %d\n",
  91                 LOAD_INT(a), LOAD_FRAC(a),
  92                 LOAD_INT(b), LOAD_FRAC(b),
  93                 LOAD_INT(c), LOAD_FRAC(c),
  94                 nr_running(), nr_threads, last_pid);
  95         return proc_calc_metrics(page, start, off, count, eof, len);
  96 }
  97
  98 static int uptime_read_proc(char *page, char **start, off_t off,
  99                                  int count, int *eof, void *data)
 100 {
 101         struct timespec uptime;
 102         struct timespec idle;
 103         int len;
 104         cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
 105
 106         do_posix_clock_monotonic_gettime(&uptime);
 107         cputime_to_timespec(idletime, &idle);
 108         len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
 109                         (unsigned long) uptime.tv_sec,
 110                         (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
 111                         (unsigned long) idle.tv_sec,
 112                         (idle.tv_nsec / (NSEC_PER_SEC / 100)));
 113
 114         return proc_calc_metrics(page, start, off, count, eof, len);
 115 }
 116
 117 static int meminfo_read_proc(char *page, char **start, off_t off,
 118                                  int count, int *eof, void *data)
 119 {
 120         struct sysinfo i;
 121         int len;
 122         struct page_state ps;
 123         unsigned long inactive;
 124         unsigned long active;
 125         unsigned long free;
 126         unsigned long committed;
 127         unsigned long allowed;
 128         struct vmalloc_info vmi;
 129         long cached;
 130
 131         get_page_state(&ps);
 132         get_zone_counts(&active, &inactive, &free);
 133
 134 /*
 135  * display in kilobytes.
 136  */
 137 #define K(x) ((x) << (PAGE_SHIFT - 10))
 138         si_meminfo(&i);
 139         si_swapinfo(&i);
 140         committed = atomic_read(&vm_committed_space);
 141         allowed = ((totalram_pages - hugetlb_total_pages())
 142                 * sysctl_overcommit_ratio / 100) + total_swap_pages;
 143
 144         cached = get_page_cache_size() - total_swapcache_pages - i.bufferram;
 145         if (cached < 0)
 146                 cached = 0;
 147
 148         get_vmalloc_info(&vmi);
 149
 150         /*
 151          * Tagged format, for easy grepping and expansion.
 152          */
 153         len = sprintf(page,
 154                 "MemTotal:     %8lu kB\n"
 155                 "MemFree:      %8lu kB\n"
 156                 "Buffers:      %8lu kB\n"
 157                 "Cached:       %8lu kB\n"
 158                 "SwapCached:   %8lu kB\n"
 159                 "Active:       %8lu kB\n"
 160                 "Inactive:     %8lu kB\n"
 161                 "HighTotal:    %8lu kB\n"
 162                 "HighFree:     %8lu kB\n"
 163                 "LowTotal:     %8lu kB\n"
 164                 "LowFree:      %8lu kB\n"
 165                 "SwapTotal:    %8lu kB\n"
 166                 "SwapFree:     %8lu kB\n"
 167                 "Dirty:        %8lu kB\n"
 168                 "Writeback:    %8lu kB\n"
 169                 "Mapped:       %8lu kB\n"
 170                 "Slab:         %8lu kB\n"
 171                 "CommitLimit:  %8lu kB\n"
 172                 "Committed_AS: %8lu kB\n"
 173                 "PageTables:   %8lu kB\n"
 174                 "VmallocTotal: %8lu kB\n"
 175                 "VmallocUsed:  %8lu kB\n"
 176                 "VmallocChunk: %8lu kB\n",
 177                 K(i.totalram),
 178                 K(i.freeram),
 179                 K(i.bufferram),
 180                 K(cached),
 181                 K(total_swapcache_pages),
 182                 K(active),
 183                 K(inactive),
 184                 K(i.totalhigh),
 185                 K(i.freehigh),
 186                 K(i.totalram-i.totalhigh),
 187                 K(i.freeram-i.freehigh),
 188                 K(i.totalswap),
 189                 K(i.freeswap),
 190                 K(ps.nr_dirty),
 191                 K(ps.nr_writeback),
 192                 K(ps.nr_mapped),
 193                 K(ps.nr_slab),
 194                 K(allowed),
 195                 K(committed),
 196                 K(ps.nr_page_table_pages),
 197                 (unsigned long)VMALLOC_TOTAL >> 10,
 198                 vmi.used >> 10,
 199                 vmi.largest_chunk >> 10
 200                 );
 201
 202                 len += hugetlb_report_meminfo(page + len);
 203
 204         return proc_calc_metrics(page, start, off, count, eof, len);
 205 #undef K
 206 }
 207
 208 extern struct seq_operations fragmentation_op;
 209 static int fragmentation_open(struct inode *inode, struct file *file)
 210 {
 211         (void)inode;
 212         return seq_open(file, &fragmentation_op);
 213 }
 214
 215 static struct file_operations fragmentation_file_operations = {
 216         .open           = fragmentation_open,
 217         .read           = seq_read,
 218         .llseek         = seq_lseek,
 219         .release        = seq_release,
 220 };
 221
 222 extern struct seq_operations zoneinfo_op;
 223 static int zoneinfo_open(struct inode *inode, struct file *file)
 224 {
 225         return seq_open(file, &zoneinfo_op);
 226 }
 227
 228 static struct file_operations proc_zoneinfo_file_operations = {
 229         .open           = zoneinfo_open,
 230         .read           = seq_read,
 231         .llseek         = seq_lseek,
 232         .release        = seq_release,
 233 };
 234
 235 static int version_read_proc(char *page, char **start, off_t off,
 236                                  int count, int *eof, void *data)
 237 {
 238         int len;
 239
 240         strcpy(page, linux_banner);
 241         len = strlen(page);
 242         return proc_calc_metrics(page, start, off, count, eof, len);
 243 }
 244
 245 extern struct seq_operations cpuinfo_op;
 246 static int cpuinfo_open(struct inode *inode, struct file *file)
 247 {
 248         return seq_open(file, &cpuinfo_op);
 249 }
 250
 251 static struct file_operations proc_cpuinfo_operations = {
 252         .open           = cpuinfo_open,
 253         .read           = seq_read,
 254         .llseek         = seq_lseek,
 255         .release        = seq_release,
 256 };
 257
 258 static int devinfo_show(struct seq_file *f, void *v)
 259 {
 260         int i = *(loff_t *) v;
 261
 262         if (i < CHRDEV_MAJOR_HASH_SIZE) {
 263                 if (i == 0)
 264                         seq_printf(f, "Character devices:\n");
 265                 chrdev_show(f, i);
 266         } else {
 267                 i -= CHRDEV_MAJOR_HASH_SIZE;
 268                 if (i == 0)
 269                         seq_printf(f, "\nBlock devices:\n");
 270                 blkdev_show(f, i);
 271         }
 272         return 0;
 273 }
 274
 275 static void *devinfo_start(struct seq_file *f, loff_t *pos)
 276 {
 277         if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
 278                 return pos;
 279         return NULL;
 280 }
 281
 282 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
 283 {
 284         (*pos)++;
 285         if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
 286                 return NULL;
 287         return pos;
 288 }
 289
 290 static void devinfo_stop(struct seq_file *f, void *v)
 291 {
 292         /* Nothing to do */
 293 }
 294
 295 static struct seq_operations devinfo_ops = {
 296         .start = devinfo_start,
 297         .next  = devinfo_next,
 298         .stop  = devinfo_stop,
 299         .show  = devinfo_show
 300 };
 301
 302 static int devinfo_open(struct inode *inode, struct file *filp)
 303 {
 304         return seq_open(filp, &devinfo_ops);
 305 }
 306
 307 static struct file_operations proc_devinfo_operations = {
 308         .open           = devinfo_open,
 309         .read           = seq_read,
 310         .llseek         = seq_lseek,
 311         .release        = seq_release,
 312 };
 313
 314 extern struct seq_operations vmstat_op;
 315 static int vmstat_open(struct inode *inode, struct file *file)
 316 {
 317         return seq_open(file, &vmstat_op);
 318 }
 319 static struct file_operations proc_vmstat_file_operations = {
 320         .open           = vmstat_open,
 321         .read           = seq_read,
 322         .llseek         = seq_lseek,
 323         .release        = seq_release,
 324 };
 325
 326 #ifdef CONFIG_PROC_HARDWARE
 327 static int hardware_read_proc(char *page, char **start, off_t off,
 328                                  int count, int *eof, void *data)
 329 {
 330         int len = get_hardware_list(page);
 331         return proc_calc_metrics(page, start, off, count, eof, len);
 332 }
 333 #endif
 334
 335 #ifdef CONFIG_STRAM_PROC
 336 static int stram_read_proc(char *page, char **start, off_t off,
 337                                  int count, int *eof, void *data)
 338 {
 339         int len = get_stram_list(page);
 340         return proc_calc_metrics(page, start, off, count, eof, len);
 341 }
 342 #endif
 343
 344 extern struct seq_operations partitions_op;
 345 static int partitions_open(struct inode *inode, struct file *file)
 346 {
 347         return seq_open(file, &partitions_op);
 348 }
 349 static struct file_operations proc_partitions_operations = {
 350         .open           = partitions_open,
 351         .read           = seq_read,
 352         .llseek         = seq_lseek,
 353         .release        = seq_release,
 354 };
 355
 356 extern struct seq_operations diskstats_op;
 357 static int diskstats_open(struct inode *inode, struct file *file)
 358 {
 359         return seq_open(file, &diskstats_op);
 360 }
 361 static struct file_operations proc_diskstats_operations = {
 362         .open           = diskstats_open,
 363         .read           = seq_read,
 364         .llseek         = seq_lseek,
 365         .release        = seq_release,
 366 };
 367
 368 #ifdef CONFIG_MODULES
 369 extern struct seq_operations modules_op;
 370 static int modules_open(struct inode *inode, struct file *file)
 371 {
 372         return seq_open(file, &modules_op);
 373 }
 374 static struct file_operations proc_modules_operations = {
 375         .open           = modules_open,
 376         .read           = seq_read,
 377         .llseek         = seq_lseek,
 378         .release        = seq_release,
 379 };
 380 #endif
 381
 382 #ifdef CONFIG_SLAB
 383 extern struct seq_operations slabinfo_op;
 384 extern ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
 385 static int slabinfo_open(struct inode *inode, struct file *file)
 386 {
 387         return seq_open(file, &slabinfo_op);
 388 }
 389 static struct file_operations proc_slabinfo_operations = {
 390         .open           = slabinfo_open,
 391         .read           = seq_read,
 392         .write          = slabinfo_write,
 393         .llseek         = seq_lseek,
 394         .release        = seq_release,
 395 };
 396
 397 #ifdef CONFIG_DEBUG_SLAB_LEAK
 398 extern struct seq_operations slabstats_op;
 399 static int slabstats_open(struct inode *inode, struct file *file)
 400 {
 401         unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
 402         int ret = -ENOMEM;
 403         if (n) {
 404                 ret = seq_open(file, &slabstats_op);
 405                 if (!ret) {
 406                         struct seq_file *m = file->private_data;
 407                         *n = PAGE_SIZE / (2 * sizeof(unsigned long));
 408                         m->private = n;
 409                         n = NULL;
 410                 }
 411                 kfree(n);
 412         }
 413         return ret;
 414 }
 415
 416 static int slabstats_release(struct inode *inode, struct file *file)
 417 {
 418         struct seq_file *m = file->private_data;
 419         kfree(m->private);
 420         return seq_release(inode, file);
 421 }
 422
 423 static struct file_operations proc_slabstats_operations = {
 424         .open           = slabstats_open,
 425         .read           = seq_read,
 426         .llseek         = seq_lseek,
 427         .release        = slabstats_release,
 428 };
 429 #endif
 430 #endif
 431
 432 static int show_stat(struct seq_file *p, void *v)
 433 {
 434         int i;
 435         unsigned long jif;
 436         cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
 437         u64 sum = 0;
 438
 439         user = nice = system = idle = iowait =
 440                 irq = softirq = steal = cputime64_zero;
 441         jif = - wall_to_monotonic.tv_sec;
 442         if (wall_to_monotonic.tv_nsec)
 443                 --jif;
 444
 445         for_each_possible_cpu(i) {
 446                 int j;
 447
 448                 user = cputime64_add(user, kstat_cpu(i).cpustat.user);
 449                 nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
 450                 system = cputime64_add(system, kstat_cpu(i).cpustat.system);
 451                 idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
 452                 iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
 453                 irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
 454                 softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
 455                 steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
 456                 for (j = 0 ; j < NR_IRQS ; j++)
 457                         sum += kstat_cpu(i).irqs[j];
 458         }
 459
 460         seq_printf(p, "cpu  %llu %llu %llu %llu %llu %llu %llu %llu\n",
 461                 (unsigned long long)cputime64_to_clock_t(user),
 462                 (unsigned long long)cputime64_to_clock_t(nice),
 463                 (unsigned long long)cputime64_to_clock_t(system),
 464                 (unsigned long long)cputime64_to_clock_t(idle),
 465                 (unsigned long long)cputime64_to_clock_t(iowait),
 466                 (unsigned long long)cputime64_to_clock_t(irq),
 467                 (unsigned long long)cputime64_to_clock_t(softirq),
 468                 (unsigned long long)cputime64_to_clock_t(steal));
 469         for_each_online_cpu(i) {
 470
 471                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
 472                 user = kstat_cpu(i).cpustat.user;
 473                 nice = kstat_cpu(i).cpustat.nice;
 474                 system = kstat_cpu(i).cpustat.system;
 475                 idle = kstat_cpu(i).cpustat.idle;
 476                 iowait = kstat_cpu(i).cpustat.iowait;
 477                 irq = kstat_cpu(i).cpustat.irq;
 478                 softirq = kstat_cpu(i).cpustat.softirq;
 479                 steal = kstat_cpu(i).cpustat.steal;
 480                 seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
 481                         i,
 482                         (unsigned long long)cputime64_to_clock_t(user),
 483                         (unsigned long long)cputime64_to_clock_t(nice),
 484                         (unsigned long long)cputime64_to_clock_t(system),
 485                         (unsigned long long)cputime64_to_clock_t(idle),
 486                         (unsigned long long)cputime64_to_clock_t(iowait),
 487                         (unsigned long long)cputime64_to_clock_t(irq),
 488                         (unsigned long long)cputime64_to_clock_t(softirq),
 489                         (unsigned long long)cputime64_to_clock_t(steal));
 490         }
 491         seq_printf(p, "intr %llu", (unsigned long long)sum);
 492
 493 #if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64)
 494         for (i = 0; i < NR_IRQS; i++)
 495                 seq_printf(p, " %u", kstat_irqs(i));
 496 #endif
 497
 498         seq_printf(p,
 499                 "\nctxt %llu\n"
 500                 "btime %lu\n"
 501                 "processes %lu\n"
 502                 "procs_running %lu\n"
 503                 "procs_blocked %lu\n",
 504                 nr_context_switches(),
 505                 (unsigned long)jif,
 506                 total_forks,
 507                 nr_running(),
 508                 nr_iowait());
 509
 510         return 0;
 511 }
 512
 513 static int stat_open(struct inode *inode, struct file *file)
 514 {
 515         unsigned size = 4096 * (1 + num_possible_cpus() / 32);
 516         char *buf;
 517         struct seq_file *m;
 518         int res;
 519
 520         /* don't ask for more than the kmalloc() max size, currently 128 KB */
 521         if (size > 128 * 1024)
 522                 size = 128 * 1024;
 523         buf = kmalloc(size, GFP_KERNEL);
 524         if (!buf)
 525                 return -ENOMEM;
 526
 527         res = single_open(file, show_stat, NULL);
 528         if (!res) {
 529                 m = file->private_data;
 530                 m->buf = buf;
 531                 m->size = size;
 532         } else
 533                 kfree(buf);
 534         return res;
 535 }
 536 static struct file_operations proc_stat_operations = {
 537         .open           = stat_open,
 538         .read           = seq_read,
 539         .llseek         = seq_lseek,
 540         .release        = single_release,
 541 };
 542
 543 /*
 544  * /proc/interrupts
 545  */
 546 static void *int_seq_start(struct seq_file *f, loff_t *pos)
 547 {
 548         return (*pos <= NR_IRQS) ? pos : NULL;
 549 }
 550
 551 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
 552 {
 553         (*pos)++;
 554         if (*pos > NR_IRQS)
 555                 return NULL;
 556         return pos;
 557 }
 558
 559 static void int_seq_stop(struct seq_file *f, void *v)
 560 {
 561         /* Nothing to do */
 562 }
 563
 564
 565 extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
 566 static struct seq_operations int_seq_ops = {
 567         .start = int_seq_start,
 568         .next  = int_seq_next,
 569         .stop  = int_seq_stop,
 570         .show  = show_interrupts
 571 };
 572
 573 static int interrupts_open(struct inode *inode, struct file *filp)
 574 {
 575         return seq_open(filp, &int_seq_ops);
 576 }
 577
 578 static struct file_operations proc_interrupts_operations = {
 579         .open           = interrupts_open,
 580         .read           = seq_read,
 581         .llseek         = seq_lseek,
 582         .release        = seq_release,
 583 };
 584
 585 static int filesystems_read_proc(char *page, char **start, off_t off,
 586                                  int count, int *eof, void *data)
 587 {
 588         int len = get_filesystem_list(page);
 589         return proc_calc_metrics(page, start, off, count, eof, len);
 590 }
 591
 592 static int cmdline_read_proc(char *page, char **start, off_t off,
 593                                  int count, int *eof, void *data)
 594 {
 595         int len;
 596
 597         len = sprintf(page, "%s\n", saved_command_line);
 598         return proc_calc_metrics(page, start, off, count, eof, len);
 599 }
 600
 601 static int locks_read_proc(char *page, char **start, off_t off,
 602                                  int count, int *eof, void *data)
 603 {
 604         int len = get_locks_status(page, start, off, count);
 605
 606         if (len < count)
 607                 *eof = 1;
 608         return len;
 609 }
 610
 611 static int execdomains_read_proc(char *page, char **start, off_t off,
 612                                  int count, int *eof, void *data)
 613 {
 614         int len = get_exec_domain_list(page);
 615         return proc_calc_metrics(page, start, off, count, eof, len);
 616 }
 617
 618 #ifdef CONFIG_MAGIC_SYSRQ
 619 /*
 620  * writing 'C' to /proc/sysrq-trigger is like sysrq-C
 621  */
 622 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
 623                                    size_t count, loff_t *ppos)
 624 {
 625         if (count) {
 626                 char c;
 627
 628                 if (get_user(c, buf))
 629                         return -EFAULT;
 630                 __handle_sysrq(c, NULL, NULL, 0);
 631         }
 632         return count;
 633 }
 634
 635 static struct file_operations proc_sysrq_trigger_operations = {
 636         .write          = write_sysrq_trigger,
 637 };
 638 #endif
 639
 640 struct proc_dir_entry *proc_root_kcore;
 641
 642 void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
 643 {
 644         struct proc_dir_entry *entry;
 645         entry = create_proc_entry(name, mode, NULL);
 646         if (entry)
 647                 entry->proc_fops = f;
 648 }
 649
 650 void __init proc_misc_init(void)
 651 {
 652         struct proc_dir_entry *entry;
 653         static struct {
 654                 char *name;
 655                 int (*read_proc)(char*,char**,off_t,int,int*,void*);
 656         } *p, simple_ones[] = {
 657                 {"loadavg",     loadavg_read_proc},
 658                 {"uptime",      uptime_read_proc},
 659                 {"meminfo",     meminfo_read_proc},
 660                 {"version",     version_read_proc},
 661 #ifdef CONFIG_PROC_HARDWARE
 662                 {"hardware",    hardware_read_proc},
 663 #endif
 664 #ifdef CONFIG_STRAM_PROC
 665                 {"stram",       stram_read_proc},
 666 #endif
 667                 {"filesystems", filesystems_read_proc},
 668                 {"cmdline",     cmdline_read_proc},
 669                 {"locks",       locks_read_proc},
 670                 {"execdomains", execdomains_read_proc},
 671                 {NULL,}
 672         };
 673         for (p = simple_ones; p->name; p++)
 674                 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
 675
 676         proc_symlink("mounts", NULL, "self/mounts");
 677
 678         /* And now for trickier ones */
 679         entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
 680         if (entry)
 681                 entry->proc_fops = &proc_kmsg_operations;
 682         create_seq_entry("devices", 0, &proc_devinfo_operations);
 683         create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
 684         create_seq_entry("partitions", 0, &proc_partitions_operations);
 685         create_seq_entry("stat", 0, &proc_stat_operations);
 686         create_seq_entry("interrupts", 0, &proc_interrupts_operations);
 687 #ifdef CONFIG_SLAB
 688         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
 689 #ifdef CONFIG_DEBUG_SLAB_LEAK
 690         create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
 691 #endif
 692 #endif
 693         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
 694         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
 695         create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
 696         create_seq_entry("diskstats", 0, &proc_diskstats_operations);
 697 #ifdef CONFIG_MODULES
 698         create_seq_entry("modules", 0, &proc_modules_operations);
 699 #endif
 700 #ifdef CONFIG_SCHEDSTATS
 701         create_seq_entry("schedstat", 0, &proc_schedstat_operations);
 702 #endif
 703 #ifdef CONFIG_PROC_KCORE
 704         proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
 705         if (proc_root_kcore) {
 706                 proc_root_kcore->proc_fops = &proc_kcore_operations;
 707                 proc_root_kcore->size =
 708                                 (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
 709         }
 710 #endif
 711 #ifdef CONFIG_PROC_VMCORE
 712         proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
 713         if (proc_vmcore)
 714                 proc_vmcore->proc_fops = &proc_vmcore_operations;
 715 #endif
 716 #ifdef CONFIG_MAGIC_SYSRQ
 717         entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
 718         if (entry)
 719                 entry->proc_fops = &proc_sysrq_trigger_operations;
 720 #endif
 721 }