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   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/config.h>
  30 #include <linux/mm.h>
  31 #include <linux/mmzone.h>
  32 #include <linux/pagemap.h>
  33 #include <linux/swap.h>
  34 #include <linux/slab.h>
  35 #include <linux/smp.h>
  36 #include <linux/signal.h>
  37 #include <linux/module.h>
  38 #include <linux/init.h>
  39 #include <linux/smp_lock.h>
  40 #include <linux/seq_file.h>
  41 #include <linux/times.h>
  42 #include <linux/profile.h>
  43 #include <linux/blkdev.h>
  44 #include <linux/hugetlb.h>
  45 #include <linux/jiffies.h>
  46 #include <linux/sysrq.h>
  47 #include <linux/vmalloc.h>
  48 #include <linux/crash_dump.h>
  49 #include <asm/uaccess.h>
  50 #include <asm/pgtable.h>
  51 #include <asm/io.h>
  52 #include <asm/tlb.h>
  53 #include <asm/div64.h>
  54 #include "internal.h"
  55
  56 #define LOAD_INT(x) ((x) >> FSHIFT)
  57 #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
  58 /*
  59  * Warning: stuff below (imported functions) assumes that its output will fit
  60  * into one page. For some of those functions it may be wrong. Moreover, we
  61  * have a way to deal with that gracefully. Right now I used straightforward
  62  * wrappers, but this needs further analysis wrt potential overflows.
  63  */
  64 extern int get_hardware_list(char *);
  65 extern int get_stram_list(char *);
  66 extern int get_filesystem_list(char *);
  67 extern int get_exec_domain_list(char *);
  68 extern int get_dma_list(char *);
  69 extern int get_locks_status (char *, char **, off_t, int);
  70
  71 static int proc_calc_metrics(char *page, char **start, off_t off,
  72                                  int count, int *eof, int len)
  73 {
  74         if (len <= off+count) *eof = 1;
  75         *start = page + off;
  76         len -= off;
  77         if (len>count) len = count;
  78         if (len<0) len = 0;
  79         return len;
  80 }
  81
  82 static int loadavg_read_proc(char *page, char **start, off_t off,
  83                                  int count, int *eof, void *data)
  84 {
  85         int a, b, c;
  86         int len;
  87
  88         a = avenrun[0] + (FIXED_1/200);
  89         b = avenrun[1] + (FIXED_1/200);
  90         c = avenrun[2] + (FIXED_1/200);
  91         len = sprintf(page,"%d.%02d %d.%02d %d.%02d %ld/%d %d\n",
  92                 LOAD_INT(a), LOAD_FRAC(a),
  93                 LOAD_INT(b), LOAD_FRAC(b),
  94                 LOAD_INT(c), LOAD_FRAC(c),
  95                 nr_running(), nr_threads, last_pid);
  96         return proc_calc_metrics(page, start, off, count, eof, len);
  97 }
  98
  99 static int uptime_read_proc(char *page, char **start, off_t off,
 100                                  int count, int *eof, void *data)
 101 {
 102         struct timespec uptime;
 103         struct timespec idle;
 104         int len;
 105         cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
 106
 107         do_posix_clock_monotonic_gettime(&uptime);
 108         cputime_to_timespec(idletime, &idle);
 109         len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
 110                         (unsigned long) uptime.tv_sec,
 111                         (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
 112                         (unsigned long) idle.tv_sec,
 113                         (idle.tv_nsec / (NSEC_PER_SEC / 100)));
 114
 115         return proc_calc_metrics(page, start, off, count, eof, len);
 116 }
 117
 118 static int meminfo_read_proc(char *page, char **start, off_t off,
 119                                  int count, int *eof, void *data)
 120 {
 121         struct sysinfo i;
 122         int len;
 123         struct page_state ps;
 124         unsigned long inactive;
 125         unsigned long active;
 126         unsigned long free;
 127         unsigned long committed;
 128         unsigned long allowed;
 129         struct vmalloc_info vmi;
 130         long cached;
 131
 132         get_page_state(&ps);
 133         get_zone_counts(&active, &inactive, &free);
 134
 135 /*
 136  * display in kilobytes.
 137  */
 138 #define K(x) ((x) << (PAGE_SHIFT - 10))
 139         si_meminfo(&i);
 140         si_swapinfo(&i);
 141         committed = atomic_read(&vm_committed_space);
 142         allowed = ((totalram_pages - hugetlb_total_pages())
 143                 * sysctl_overcommit_ratio / 100) + total_swap_pages;
 144
 145         cached = global_page_state(NR_FILE_PAGES) -
 146                         total_swapcache_pages - i.bufferram;
 147         if (cached < 0)
 148                 cached = 0;
 149
 150         get_vmalloc_info(&vmi);
 151
 152         /*
 153          * Tagged format, for easy grepping and expansion.
 154          */
 155         len = sprintf(page,
 156                 "MemTotal:     %8lu kB\n"
 157                 "MemFree:      %8lu kB\n"
 158                 "Buffers:      %8lu kB\n"
 159                 "Cached:       %8lu kB\n"
 160                 "SwapCached:   %8lu kB\n"
 161                 "Active:       %8lu kB\n"
 162                 "Inactive:     %8lu kB\n"
 163                 "HighTotal:    %8lu kB\n"
 164                 "HighFree:     %8lu kB\n"
 165                 "LowTotal:     %8lu kB\n"
 166                 "LowFree:      %8lu kB\n"
 167                 "SwapTotal:    %8lu kB\n"
 168                 "SwapFree:     %8lu kB\n"
 169                 "Dirty:        %8lu kB\n"
 170                 "Writeback:    %8lu kB\n"
 171                 "Mapped:       %8lu kB\n"
 172                 "Slab:         %8lu kB\n"
 173                 "CommitLimit:  %8lu kB\n"
 174                 "Committed_AS: %8lu kB\n"
 175                 "PageTables:   %8lu kB\n"
 176                 "VmallocTotal: %8lu kB\n"
 177                 "VmallocUsed:  %8lu kB\n"
 178                 "VmallocChunk: %8lu kB\n",
 179                 K(i.totalram),
 180                 K(i.freeram),
 181                 K(i.bufferram),
 182                 K(cached),
 183                 K(total_swapcache_pages),
 184                 K(active),
 185                 K(inactive),
 186                 K(i.totalhigh),
 187                 K(i.freehigh),
 188                 K(i.totalram-i.totalhigh),
 189                 K(i.freeram-i.freehigh),
 190                 K(i.totalswap),
 191                 K(i.freeswap),
 192                 K(ps.nr_dirty),
 193                 K(ps.nr_writeback),
 194                 K(global_page_state(NR_FILE_MAPPED)),
 195                 K(ps.nr_slab),
 196                 K(allowed),
 197                 K(committed),
 198                 K(ps.nr_page_table_pages),
 199                 (unsigned long)VMALLOC_TOTAL >> 10,
 200                 vmi.used >> 10,
 201                 vmi.largest_chunk >> 10
 202                 );
 203
 204                 len += hugetlb_report_meminfo(page + len);
 205
 206         return proc_calc_metrics(page, start, off, count, eof, len);
 207 #undef K
 208 }
 209
 210 extern struct seq_operations fragmentation_op;
 211 static int fragmentation_open(struct inode *inode, struct file *file)
 212 {
 213         (void)inode;
 214         return seq_open(file, &fragmentation_op);
 215 }
 216
 217 static struct file_operations fragmentation_file_operations = {
 218         .open           = fragmentation_open,
 219         .read           = seq_read,
 220         .llseek         = seq_lseek,
 221         .release        = seq_release,
 222 };
 223
 224 extern struct seq_operations zoneinfo_op;
 225 static int zoneinfo_open(struct inode *inode, struct file *file)
 226 {
 227         return seq_open(file, &zoneinfo_op);
 228 }
 229
 230 static struct file_operations proc_zoneinfo_file_operations = {
 231         .open           = zoneinfo_open,
 232         .read           = seq_read,
 233         .llseek         = seq_lseek,
 234         .release        = seq_release,
 235 };
 236
 237 static int version_read_proc(char *page, char **start, off_t off,
 238                                  int count, int *eof, void *data)
 239 {
 240         int len;
 241
 242         strcpy(page, linux_banner);
 243         len = strlen(page);
 244         return proc_calc_metrics(page, start, off, count, eof, len);
 245 }
 246
 247 extern struct seq_operations cpuinfo_op;
 248 static int cpuinfo_open(struct inode *inode, struct file *file)
 249 {
 250         return seq_open(file, &cpuinfo_op);
 251 }
 252
 253 static struct file_operations proc_cpuinfo_operations = {
 254         .open           = cpuinfo_open,
 255         .read           = seq_read,
 256         .llseek         = seq_lseek,
 257         .release        = seq_release,
 258 };
 259
 260 static int devinfo_show(struct seq_file *f, void *v)
 261 {
 262         int i = *(loff_t *) v;
 263
 264         if (i < CHRDEV_MAJOR_HASH_SIZE) {
 265                 if (i == 0)
 266                         seq_printf(f, "Character devices:\n");
 267                 chrdev_show(f, i);
 268         } else {
 269                 i -= CHRDEV_MAJOR_HASH_SIZE;
 270                 if (i == 0)
 271                         seq_printf(f, "\nBlock devices:\n");
 272                 blkdev_show(f, i);
 273         }
 274         return 0;
 275 }
 276
 277 static void *devinfo_start(struct seq_file *f, loff_t *pos)
 278 {
 279         if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
 280                 return pos;
 281         return NULL;
 282 }
 283
 284 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
 285 {
 286         (*pos)++;
 287         if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
 288                 return NULL;
 289         return pos;
 290 }
 291
 292 static void devinfo_stop(struct seq_file *f, void *v)
 293 {
 294         /* Nothing to do */
 295 }
 296
 297 static struct seq_operations devinfo_ops = {
 298         .start = devinfo_start,
 299         .next  = devinfo_next,
 300         .stop  = devinfo_stop,
 301         .show  = devinfo_show
 302 };
 303
 304 static int devinfo_open(struct inode *inode, struct file *filp)
 305 {
 306         return seq_open(filp, &devinfo_ops);
 307 }
 308
 309 static struct file_operations proc_devinfo_operations = {
 310         .open           = devinfo_open,
 311         .read           = seq_read,
 312         .llseek         = seq_lseek,
 313         .release        = seq_release,
 314 };
 315
 316 extern struct seq_operations vmstat_op;
 317 static int vmstat_open(struct inode *inode, struct file *file)
 318 {
 319         return seq_open(file, &vmstat_op);
 320 }
 321 static struct file_operations proc_vmstat_file_operations = {
 322         .open           = vmstat_open,
 323         .read           = seq_read,
 324         .llseek         = seq_lseek,
 325         .release        = seq_release,
 326 };
 327
 328 #ifdef CONFIG_PROC_HARDWARE
 329 static int hardware_read_proc(char *page, char **start, off_t off,
 330                                  int count, int *eof, void *data)
 331 {
 332         int len = get_hardware_list(page);
 333         return proc_calc_metrics(page, start, off, count, eof, len);
 334 }
 335 #endif
 336
 337 #ifdef CONFIG_STRAM_PROC
 338 static int stram_read_proc(char *page, char **start, off_t off,
 339                                  int count, int *eof, void *data)
 340 {
 341         int len = get_stram_list(page);
 342         return proc_calc_metrics(page, start, off, count, eof, len);
 343 }
 344 #endif
 345
 346 extern struct seq_operations partitions_op;
 347 static int partitions_open(struct inode *inode, struct file *file)
 348 {
 349         return seq_open(file, &partitions_op);
 350 }
 351 static struct file_operations proc_partitions_operations = {
 352         .open           = partitions_open,
 353         .read           = seq_read,
 354         .llseek         = seq_lseek,
 355         .release        = seq_release,
 356 };
 357
 358 extern struct seq_operations diskstats_op;
 359 static int diskstats_open(struct inode *inode, struct file *file)
 360 {
 361         return seq_open(file, &diskstats_op);
 362 }
 363 static struct file_operations proc_diskstats_operations = {
 364         .open           = diskstats_open,
 365         .read           = seq_read,
 366         .llseek         = seq_lseek,
 367         .release        = seq_release,
 368 };
 369
 370 #ifdef CONFIG_MODULES
 371 extern struct seq_operations modules_op;
 372 static int modules_open(struct inode *inode, struct file *file)
 373 {
 374         return seq_open(file, &modules_op);
 375 }
 376 static struct file_operations proc_modules_operations = {
 377         .open           = modules_open,
 378         .read           = seq_read,
 379         .llseek         = seq_lseek,
 380         .release        = seq_release,
 381 };
 382 #endif
 383
 384 #ifdef CONFIG_SLAB
 385 extern struct seq_operations slabinfo_op;
 386 extern ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
 387 static int slabinfo_open(struct inode *inode, struct file *file)
 388 {
 389         return seq_open(file, &slabinfo_op);
 390 }
 391 static struct file_operations proc_slabinfo_operations = {
 392         .open           = slabinfo_open,
 393         .read           = seq_read,
 394         .write          = slabinfo_write,
 395         .llseek         = seq_lseek,
 396         .release        = seq_release,
 397 };
 398
 399 #ifdef CONFIG_DEBUG_SLAB_LEAK
 400 extern struct seq_operations slabstats_op;
 401 static int slabstats_open(struct inode *inode, struct file *file)
 402 {
 403         unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
 404         int ret = -ENOMEM;
 405         if (n) {
 406                 ret = seq_open(file, &slabstats_op);
 407                 if (!ret) {
 408                         struct seq_file *m = file->private_data;
 409                         *n = PAGE_SIZE / (2 * sizeof(unsigned long));
 410                         m->private = n;
 411                         n = NULL;
 412                 }
 413                 kfree(n);
 414         }
 415         return ret;
 416 }
 417
 418 static int slabstats_release(struct inode *inode, struct file *file)
 419 {
 420         struct seq_file *m = file->private_data;
 421         kfree(m->private);
 422         return seq_release(inode, file);
 423 }
 424
 425 static struct file_operations proc_slabstats_operations = {
 426         .open           = slabstats_open,
 427         .read           = seq_read,
 428         .llseek         = seq_lseek,
 429         .release        = slabstats_release,
 430 };
 431 #endif
 432 #endif
 433
 434 static int show_stat(struct seq_file *p, void *v)
 435 {
 436         int i;
 437         unsigned long jif;
 438         cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
 439         u64 sum = 0;
 440
 441         user = nice = system = idle = iowait =
 442                 irq = softirq = steal = cputime64_zero;
 443         jif = - wall_to_monotonic.tv_sec;
 444         if (wall_to_monotonic.tv_nsec)
 445                 --jif;
 446
 447         for_each_possible_cpu(i) {
 448                 int j;
 449
 450                 user = cputime64_add(user, kstat_cpu(i).cpustat.user);
 451                 nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
 452                 system = cputime64_add(system, kstat_cpu(i).cpustat.system);
 453                 idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
 454                 iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
 455                 irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
 456                 softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
 457                 steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
 458                 for (j = 0 ; j < NR_IRQS ; j++)
 459                         sum += kstat_cpu(i).irqs[j];
 460         }
 461
 462         seq_printf(p, "cpu  %llu %llu %llu %llu %llu %llu %llu %llu\n",
 463                 (unsigned long long)cputime64_to_clock_t(user),
 464                 (unsigned long long)cputime64_to_clock_t(nice),
 465                 (unsigned long long)cputime64_to_clock_t(system),
 466                 (unsigned long long)cputime64_to_clock_t(idle),
 467                 (unsigned long long)cputime64_to_clock_t(iowait),
 468                 (unsigned long long)cputime64_to_clock_t(irq),
 469                 (unsigned long long)cputime64_to_clock_t(softirq),
 470                 (unsigned long long)cputime64_to_clock_t(steal));
 471         for_each_online_cpu(i) {
 472
 473                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
 474                 user = kstat_cpu(i).cpustat.user;
 475                 nice = kstat_cpu(i).cpustat.nice;
 476                 system = kstat_cpu(i).cpustat.system;
 477                 idle = kstat_cpu(i).cpustat.idle;
 478                 iowait = kstat_cpu(i).cpustat.iowait;
 479                 irq = kstat_cpu(i).cpustat.irq;
 480                 softirq = kstat_cpu(i).cpustat.softirq;
 481                 steal = kstat_cpu(i).cpustat.steal;
 482                 seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
 483                         i,
 484                         (unsigned long long)cputime64_to_clock_t(user),
 485                         (unsigned long long)cputime64_to_clock_t(nice),
 486                         (unsigned long long)cputime64_to_clock_t(system),
 487                         (unsigned long long)cputime64_to_clock_t(idle),
 488                         (unsigned long long)cputime64_to_clock_t(iowait),
 489                         (unsigned long long)cputime64_to_clock_t(irq),
 490                         (unsigned long long)cputime64_to_clock_t(softirq),
 491                         (unsigned long long)cputime64_to_clock_t(steal));
 492         }
 493         seq_printf(p, "intr %llu", (unsigned long long)sum);
 494
 495 #if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64)
 496         for (i = 0; i < NR_IRQS; i++)
 497                 seq_printf(p, " %u", kstat_irqs(i));
 498 #endif
 499
 500         seq_printf(p,
 501                 "\nctxt %llu\n"
 502                 "btime %lu\n"
 503                 "processes %lu\n"
 504                 "procs_running %lu\n"
 505                 "procs_blocked %lu\n",
 506                 nr_context_switches(),
 507                 (unsigned long)jif,
 508                 total_forks,
 509                 nr_running(),
 510                 nr_iowait());
 511
 512         return 0;
 513 }
 514
 515 static int stat_open(struct inode *inode, struct file *file)
 516 {
 517         unsigned size = 4096 * (1 + num_possible_cpus() / 32);
 518         char *buf;
 519         struct seq_file *m;
 520         int res;
 521
 522         /* don't ask for more than the kmalloc() max size, currently 128 KB */
 523         if (size > 128 * 1024)
 524                 size = 128 * 1024;
 525         buf = kmalloc(size, GFP_KERNEL);
 526         if (!buf)
 527                 return -ENOMEM;
 528
 529         res = single_open(file, show_stat, NULL);
 530         if (!res) {
 531                 m = file->private_data;
 532                 m->buf = buf;
 533                 m->size = size;
 534         } else
 535                 kfree(buf);
 536         return res;
 537 }
 538 static struct file_operations proc_stat_operations = {
 539         .open           = stat_open,
 540         .read           = seq_read,
 541         .llseek         = seq_lseek,
 542         .release        = single_release,
 543 };
 544
 545 /*
 546  * /proc/interrupts
 547  */
 548 static void *int_seq_start(struct seq_file *f, loff_t *pos)
 549 {
 550         return (*pos <= NR_IRQS) ? pos : NULL;
 551 }
 552
 553 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
 554 {
 555         (*pos)++;
 556         if (*pos > NR_IRQS)
 557                 return NULL;
 558         return pos;
 559 }
 560
 561 static void int_seq_stop(struct seq_file *f, void *v)
 562 {
 563         /* Nothing to do */
 564 }
 565
 566
 567 extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
 568 static struct seq_operations int_seq_ops = {
 569         .start = int_seq_start,
 570         .next  = int_seq_next,
 571         .stop  = int_seq_stop,
 572         .show  = show_interrupts
 573 };
 574
 575 static int interrupts_open(struct inode *inode, struct file *filp)
 576 {
 577         return seq_open(filp, &int_seq_ops);
 578 }
 579
 580 static struct file_operations proc_interrupts_operations = {
 581         .open           = interrupts_open,
 582         .read           = seq_read,
 583         .llseek         = seq_lseek,
 584         .release        = seq_release,
 585 };
 586
 587 static int filesystems_read_proc(char *page, char **start, off_t off,
 588                                  int count, int *eof, void *data)
 589 {
 590         int len = get_filesystem_list(page);
 591         return proc_calc_metrics(page, start, off, count, eof, len);
 592 }
 593
 594 static int cmdline_read_proc(char *page, char **start, off_t off,
 595                                  int count, int *eof, void *data)
 596 {
 597         int len;
 598
 599         len = sprintf(page, "%s\n", saved_command_line);
 600         return proc_calc_metrics(page, start, off, count, eof, len);
 601 }
 602
 603 static int locks_read_proc(char *page, char **start, off_t off,
 604                                  int count, int *eof, void *data)
 605 {
 606         int len = get_locks_status(page, start, off, count);
 607
 608         if (len < count)
 609                 *eof = 1;
 610         return len;
 611 }
 612
 613 static int execdomains_read_proc(char *page, char **start, off_t off,
 614                                  int count, int *eof, void *data)
 615 {
 616         int len = get_exec_domain_list(page);
 617         return proc_calc_metrics(page, start, off, count, eof, len);
 618 }
 619
 620 #ifdef CONFIG_MAGIC_SYSRQ
 621 /*
 622  * writing 'C' to /proc/sysrq-trigger is like sysrq-C
 623  */
 624 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
 625                                    size_t count, loff_t *ppos)
 626 {
 627         if (count) {
 628                 char c;
 629
 630                 if (get_user(c, buf))
 631                         return -EFAULT;
 632                 __handle_sysrq(c, NULL, NULL, 0);
 633         }
 634         return count;
 635 }
 636
 637 static struct file_operations proc_sysrq_trigger_operations = {
 638         .write          = write_sysrq_trigger,
 639 };
 640 #endif
 641
 642 struct proc_dir_entry *proc_root_kcore;
 643
 644 void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
 645 {
 646         struct proc_dir_entry *entry;
 647         entry = create_proc_entry(name, mode, NULL);
 648         if (entry)
 649                 entry->proc_fops = f;
 650 }
 651
 652 void __init proc_misc_init(void)
 653 {
 654         struct proc_dir_entry *entry;
 655         static struct {
 656                 char *name;
 657                 int (*read_proc)(char*,char**,off_t,int,int*,void*);
 658         } *p, simple_ones[] = {
 659                 {"loadavg",     loadavg_read_proc},
 660                 {"uptime",      uptime_read_proc},
 661                 {"meminfo",     meminfo_read_proc},
 662                 {"version",     version_read_proc},
 663 #ifdef CONFIG_PROC_HARDWARE
 664                 {"hardware",    hardware_read_proc},
 665 #endif
 666 #ifdef CONFIG_STRAM_PROC
 667                 {"stram",       stram_read_proc},
 668 #endif
 669                 {"filesystems", filesystems_read_proc},
 670                 {"cmdline",     cmdline_read_proc},
 671                 {"locks",       locks_read_proc},
 672                 {"execdomains", execdomains_read_proc},
 673                 {NULL,}
 674         };
 675         for (p = simple_ones; p->name; p++)
 676                 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
 677
 678         proc_symlink("mounts", NULL, "self/mounts");
 679
 680         /* And now for trickier ones */
 681         entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
 682         if (entry)
 683                 entry->proc_fops = &proc_kmsg_operations;
 684         create_seq_entry("devices", 0, &proc_devinfo_operations);
 685         create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
 686         create_seq_entry("partitions", 0, &proc_partitions_operations);
 687         create_seq_entry("stat", 0, &proc_stat_operations);
 688         create_seq_entry("interrupts", 0, &proc_interrupts_operations);
 689 #ifdef CONFIG_SLAB
 690         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
 691 #ifdef CONFIG_DEBUG_SLAB_LEAK
 692         create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
 693 #endif
 694 #endif
 695         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
 696         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
 697         create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
 698         create_seq_entry("diskstats", 0, &proc_diskstats_operations);
 699 #ifdef CONFIG_MODULES
 700         create_seq_entry("modules", 0, &proc_modules_operations);
 701 #endif
 702 #ifdef CONFIG_SCHEDSTATS
 703         create_seq_entry("schedstat", 0, &proc_schedstat_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 #ifdef CONFIG_PROC_VMCORE
 714         proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
 715         if (proc_vmcore)
 716                 proc_vmcore->proc_fops = &proc_vmcore_operations;
 717 #endif
 718 #ifdef CONFIG_MAGIC_SYSRQ
 719         entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
 720         if (entry)
 721                 entry->proc_fops = &proc_sysrq_trigger_operations;
 722 #endif
 723 }