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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb
[pv_ops_mirror.git] / fs / proc / proc_misc.c
blobe0d064e9764ef55422cf79119b7624b3e6b87373
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/seq_file.h>
39 #include <linux/times.h>
40 #include <linux/profile.h>
41 #include <linux/utsname.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 <linux/pid_namespace.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
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,
95 task_active_pid_ns(current)->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 monotonic_to_bootbased(&uptime);
109 cputime_to_timespec(idletime, &idle);
110 len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
111 (unsigned long) uptime.tv_sec,
112 (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
113 (unsigned long) idle.tv_sec,
114 (idle.tv_nsec / (NSEC_PER_SEC / 100)));
115
116 return proc_calc_metrics(page, start, off, count, eof, len);
117 }
118
119 static int meminfo_read_proc(char *page, char **start, off_t off,
120 int count, int *eof, void *data)
121 {
122 struct sysinfo i;
123 int len;
124 unsigned long committed;
125 unsigned long allowed;
126 struct vmalloc_info vmi;
127 long cached;
128
129 /*
130 * display in kilobytes.
131 */
132 #define K(x) ((x) << (PAGE_SHIFT - 10))
133 si_meminfo(&i);
134 si_swapinfo(&i);
135 committed = atomic_read(&vm_committed_space);
136 allowed = ((totalram_pages - hugetlb_total_pages())
137 * sysctl_overcommit_ratio / 100) + total_swap_pages;
138
139 cached = global_page_state(NR_FILE_PAGES) -
140 total_swapcache_pages - i.bufferram;
141 if (cached < 0)
142 cached = 0;
143
144 get_vmalloc_info(&vmi);
145
146 /*
147 * Tagged format, for easy grepping and expansion.
148 */
149 len = sprintf(page,
150 "MemTotal: %8lu kB\n"
151 "MemFree: %8lu kB\n"
152 "Buffers: %8lu kB\n"
153 "Cached: %8lu kB\n"
154 "SwapCached: %8lu kB\n"
155 "Active: %8lu kB\n"
156 "Inactive: %8lu kB\n"
157 #ifdef CONFIG_HIGHMEM
158 "HighTotal: %8lu kB\n"
159 "HighFree: %8lu kB\n"
160 "LowTotal: %8lu kB\n"
161 "LowFree: %8lu kB\n"
162 #endif
163 "SwapTotal: %8lu kB\n"
164 "SwapFree: %8lu kB\n"
165 "Dirty: %8lu kB\n"
166 "Writeback: %8lu kB\n"
167 "AnonPages: %8lu kB\n"
168 "Mapped: %8lu kB\n"
169 "Slab: %8lu kB\n"
170 "SReclaimable: %8lu kB\n"
171 "SUnreclaim: %8lu kB\n"
172 "PageTables: %8lu kB\n"
173 "NFS_Unstable: %8lu kB\n"
174 "Bounce: %8lu kB\n"
175 "CommitLimit: %8lu kB\n"
176 "Committed_AS: %8lu kB\n"
177 "VmallocTotal: %8lu kB\n"
178 "VmallocUsed: %8lu kB\n"
179 "VmallocChunk: %8lu kB\n",
180 K(i.totalram),
181 K(i.freeram),
182 K(i.bufferram),
183 K(cached),
184 K(total_swapcache_pages),
185 K(global_page_state(NR_ACTIVE)),
186 K(global_page_state(NR_INACTIVE)),
187 #ifdef CONFIG_HIGHMEM
188 K(i.totalhigh),
189 K(i.freehigh),
190 K(i.totalram-i.totalhigh),
191 K(i.freeram-i.freehigh),
192 #endif
193 K(i.totalswap),
194 K(i.freeswap),
195 K(global_page_state(NR_FILE_DIRTY)),
196 K(global_page_state(NR_WRITEBACK)),
197 K(global_page_state(NR_ANON_PAGES)),
198 K(global_page_state(NR_FILE_MAPPED)),
199 K(global_page_state(NR_SLAB_RECLAIMABLE) +
200 global_page_state(NR_SLAB_UNRECLAIMABLE)),
201 K(global_page_state(NR_SLAB_RECLAIMABLE)),
202 K(global_page_state(NR_SLAB_UNRECLAIMABLE)),
203 K(global_page_state(NR_PAGETABLE)),
204 K(global_page_state(NR_UNSTABLE_NFS)),
205 K(global_page_state(NR_BOUNCE)),
206 K(allowed),
207 K(committed),
208 (unsigned long)VMALLOC_TOTAL >> 10,
209 vmi.used >> 10,
210 vmi.largest_chunk >> 10
211 );
212
213 len += hugetlb_report_meminfo(page + len);
214
215 return proc_calc_metrics(page, start, off, count, eof, len);
216 #undef K
217 }
218
219 extern struct seq_operations fragmentation_op;
220 static int fragmentation_open(struct inode *inode, struct file *file)
221 {
222 (void)inode;
223 return seq_open(file, &fragmentation_op);
224 }
225
226 static const struct file_operations fragmentation_file_operations = {
227 .open = fragmentation_open,
228 .read = seq_read,
229 .llseek = seq_lseek,
230 .release = seq_release,
231 };
232
233 extern struct seq_operations pagetypeinfo_op;
234 static int pagetypeinfo_open(struct inode *inode, struct file *file)
235 {
236 return seq_open(file, &pagetypeinfo_op);
237 }
238
239 static const struct file_operations pagetypeinfo_file_ops = {
240 .open = pagetypeinfo_open,
241 .read = seq_read,
242 .llseek = seq_lseek,
243 .release = seq_release,
244 };
245
246 extern struct seq_operations zoneinfo_op;
247 static int zoneinfo_open(struct inode *inode, struct file *file)
248 {
249 return seq_open(file, &zoneinfo_op);
250 }
251
252 static const struct file_operations proc_zoneinfo_file_operations = {
253 .open = zoneinfo_open,
254 .read = seq_read,
255 .llseek = seq_lseek,
256 .release = seq_release,
257 };
258
259 static int version_read_proc(char *page, char **start, off_t off,
260 int count, int *eof, void *data)
261 {
262 int len;
263
264 len = snprintf(page, PAGE_SIZE, linux_proc_banner,
265 utsname()->sysname,
266 utsname()->release,
267 utsname()->version);
268 return proc_calc_metrics(page, start, off, count, eof, len);
269 }
270
271 extern struct seq_operations cpuinfo_op;
272 static int cpuinfo_open(struct inode *inode, struct file *file)
273 {
274 return seq_open(file, &cpuinfo_op);
275 }
276
277 static const struct file_operations proc_cpuinfo_operations = {
278 .open = cpuinfo_open,
279 .read = seq_read,
280 .llseek = seq_lseek,
281 .release = seq_release,
282 };
283
284 static int devinfo_show(struct seq_file *f, void *v)
285 {
286 int i = *(loff_t *) v;
287
288 if (i < CHRDEV_MAJOR_HASH_SIZE) {
289 if (i == 0)
290 seq_printf(f, "Character devices:\n");
291 chrdev_show(f, i);
292 }
293 #ifdef CONFIG_BLOCK
294 else {
295 i -= CHRDEV_MAJOR_HASH_SIZE;
296 if (i == 0)
297 seq_printf(f, "\nBlock devices:\n");
298 blkdev_show(f, i);
299 }
300 #endif
301 return 0;
302 }
303
304 static void *devinfo_start(struct seq_file *f, loff_t *pos)
305 {
306 if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
307 return pos;
308 return NULL;
309 }
310
311 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
312 {
313 (*pos)++;
314 if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
315 return NULL;
316 return pos;
317 }
318
319 static void devinfo_stop(struct seq_file *f, void *v)
320 {
321 /* Nothing to do */
322 }
323
324 static struct seq_operations devinfo_ops = {
325 .start = devinfo_start,
326 .next = devinfo_next,
327 .stop = devinfo_stop,
328 .show = devinfo_show
329 };
330
331 static int devinfo_open(struct inode *inode, struct file *filp)
332 {
333 return seq_open(filp, &devinfo_ops);
334 }
335
336 static const struct file_operations proc_devinfo_operations = {
337 .open = devinfo_open,
338 .read = seq_read,
339 .llseek = seq_lseek,
340 .release = seq_release,
341 };
342
343 extern struct seq_operations vmstat_op;
344 static int vmstat_open(struct inode *inode, struct file *file)
345 {
346 return seq_open(file, &vmstat_op);
347 }
348 static const struct file_operations proc_vmstat_file_operations = {
349 .open = vmstat_open,
350 .read = seq_read,
351 .llseek = seq_lseek,
352 .release = seq_release,
353 };
354
355 #ifdef CONFIG_PROC_HARDWARE
356 static int hardware_read_proc(char *page, char **start, off_t off,
357 int count, int *eof, void *data)
358 {
359 int len = get_hardware_list(page);
360 return proc_calc_metrics(page, start, off, count, eof, len);
361 }
362 #endif
363
364 #ifdef CONFIG_STRAM_PROC
365 static int stram_read_proc(char *page, char **start, off_t off,
366 int count, int *eof, void *data)
367 {
368 int len = get_stram_list(page);
369 return proc_calc_metrics(page, start, off, count, eof, len);
370 }
371 #endif
372
373 #ifdef CONFIG_BLOCK
374 extern struct seq_operations partitions_op;
375 static int partitions_open(struct inode *inode, struct file *file)
376 {
377 return seq_open(file, &partitions_op);
378 }
379 static const struct file_operations proc_partitions_operations = {
380 .open = partitions_open,
381 .read = seq_read,
382 .llseek = seq_lseek,
383 .release = seq_release,
384 };
385
386 extern struct seq_operations diskstats_op;
387 static int diskstats_open(struct inode *inode, struct file *file)
388 {
389 return seq_open(file, &diskstats_op);
390 }
391 static const struct file_operations proc_diskstats_operations = {
392 .open = diskstats_open,
393 .read = seq_read,
394 .llseek = seq_lseek,
395 .release = seq_release,
396 };
397 #endif
398
399 #ifdef CONFIG_MODULES
400 extern struct seq_operations modules_op;
401 static int modules_open(struct inode *inode, struct file *file)
402 {
403 return seq_open(file, &modules_op);
404 }
405 static const struct file_operations proc_modules_operations = {
406 .open = modules_open,
407 .read = seq_read,
408 .llseek = seq_lseek,
409 .release = seq_release,
410 };
411 #endif
412
413 #ifdef CONFIG_SLAB
414 static int slabinfo_open(struct inode *inode, struct file *file)
415 {
416 return seq_open(file, &slabinfo_op);
417 }
418 static const struct file_operations proc_slabinfo_operations = {
419 .open = slabinfo_open,
420 .read = seq_read,
421 .write = slabinfo_write,
422 .llseek = seq_lseek,
423 .release = seq_release,
424 };
425
426 #ifdef CONFIG_DEBUG_SLAB_LEAK
427 extern struct seq_operations slabstats_op;
428 static int slabstats_open(struct inode *inode, struct file *file)
429 {
430 unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
431 int ret = -ENOMEM;
432 if (n) {
433 ret = seq_open(file, &slabstats_op);
434 if (!ret) {
435 struct seq_file *m = file->private_data;
436 *n = PAGE_SIZE / (2 * sizeof(unsigned long));
437 m->private = n;
438 n = NULL;
439 }
440 kfree(n);
441 }
442 return ret;
443 }
444
445 static const struct file_operations proc_slabstats_operations = {
446 .open = slabstats_open,
447 .read = seq_read,
448 .llseek = seq_lseek,
449 .release = seq_release_private,
450 };
451 #endif
452 #endif
453
454 static int show_stat(struct seq_file *p, void *v)
455 {
456 int i;
457 unsigned long jif;
458 cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
459 cputime64_t guest;
460 u64 sum = 0;
461 struct timespec boottime;
462 unsigned int *per_irq_sum;
463
464 per_irq_sum = kzalloc(sizeof(unsigned int)*NR_IRQS, GFP_KERNEL);
465 if (!per_irq_sum)
466 return -ENOMEM;
467
468 user = nice = system = idle = iowait =
469 irq = softirq = steal = cputime64_zero;
470 guest = cputime64_zero;
471 getboottime(&boottime);
472 jif = boottime.tv_sec;
473
474 for_each_possible_cpu(i) {
475 int j;
476
477 user = cputime64_add(user, kstat_cpu(i).cpustat.user);
478 nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
479 system = cputime64_add(system, kstat_cpu(i).cpustat.system);
480 idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
481 iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
482 irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
483 softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
484 steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
485 guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
486 for (j = 0; j < NR_IRQS; j++) {
487 unsigned int temp = kstat_cpu(i).irqs[j];
488 sum += temp;
489 per_irq_sum[j] += temp;
490 }
491 }
492
493 seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
494 (unsigned long long)cputime64_to_clock_t(user),
495 (unsigned long long)cputime64_to_clock_t(nice),
496 (unsigned long long)cputime64_to_clock_t(system),
497 (unsigned long long)cputime64_to_clock_t(idle),
498 (unsigned long long)cputime64_to_clock_t(iowait),
499 (unsigned long long)cputime64_to_clock_t(irq),
500 (unsigned long long)cputime64_to_clock_t(softirq),
501 (unsigned long long)cputime64_to_clock_t(steal),
502 (unsigned long long)cputime64_to_clock_t(guest));
503 for_each_online_cpu(i) {
504
505 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
506 user = kstat_cpu(i).cpustat.user;
507 nice = kstat_cpu(i).cpustat.nice;
508 system = kstat_cpu(i).cpustat.system;
509 idle = kstat_cpu(i).cpustat.idle;
510 iowait = kstat_cpu(i).cpustat.iowait;
511 irq = kstat_cpu(i).cpustat.irq;
512 softirq = kstat_cpu(i).cpustat.softirq;
513 steal = kstat_cpu(i).cpustat.steal;
514 guest = kstat_cpu(i).cpustat.guest;
515 seq_printf(p,
516 "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
517 i,
518 (unsigned long long)cputime64_to_clock_t(user),
519 (unsigned long long)cputime64_to_clock_t(nice),
520 (unsigned long long)cputime64_to_clock_t(system),
521 (unsigned long long)cputime64_to_clock_t(idle),
522 (unsigned long long)cputime64_to_clock_t(iowait),
523 (unsigned long long)cputime64_to_clock_t(irq),
524 (unsigned long long)cputime64_to_clock_t(softirq),
525 (unsigned long long)cputime64_to_clock_t(steal),
526 (unsigned long long)cputime64_to_clock_t(guest));
527 }
528 seq_printf(p, "intr %llu", (unsigned long long)sum);
529
530 for (i = 0; i < NR_IRQS; i++)
531 seq_printf(p, " %u", per_irq_sum[i]);
532
533 seq_printf(p,
534 "\nctxt %llu\n"
535 "btime %lu\n"
536 "processes %lu\n"
537 "procs_running %lu\n"
538 "procs_blocked %lu\n",
539 nr_context_switches(),
540 (unsigned long)jif,
541 total_forks,
542 nr_running(),
543 nr_iowait());
544
545 kfree(per_irq_sum);
546 return 0;
547 }
548
549 static int stat_open(struct inode *inode, struct file *file)
550 {
551 unsigned size = 4096 * (1 + num_possible_cpus() / 32);
552 char *buf;
553 struct seq_file *m;
554 int res;
555
556 /* don't ask for more than the kmalloc() max size, currently 128 KB */
557 if (size > 128 * 1024)
558 size = 128 * 1024;
559 buf = kmalloc(size, GFP_KERNEL);
560 if (!buf)
561 return -ENOMEM;
562
563 res = single_open(file, show_stat, NULL);
564 if (!res) {
565 m = file->private_data;
566 m->buf = buf;
567 m->size = size;
568 } else
569 kfree(buf);
570 return res;
571 }
572 static const struct file_operations proc_stat_operations = {
573 .open = stat_open,
574 .read = seq_read,
575 .llseek = seq_lseek,
576 .release = single_release,
577 };
578
579 /*
580 * /proc/interrupts
581 */
582 static void *int_seq_start(struct seq_file *f, loff_t *pos)
583 {
584 return (*pos <= NR_IRQS) ? pos : NULL;
585 }
586
587 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
588 {
589 (*pos)++;
590 if (*pos > NR_IRQS)
591 return NULL;
592 return pos;
593 }
594
595 static void int_seq_stop(struct seq_file *f, void *v)
596 {
597 /* Nothing to do */
598 }
599
600
601 extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
602 static struct seq_operations int_seq_ops = {
603 .start = int_seq_start,
604 .next = int_seq_next,
605 .stop = int_seq_stop,
606 .show = show_interrupts
607 };
608
609 static int interrupts_open(struct inode *inode, struct file *filp)
610 {
611 return seq_open(filp, &int_seq_ops);
612 }
613
614 static const struct file_operations proc_interrupts_operations = {
615 .open = interrupts_open,
616 .read = seq_read,
617 .llseek = seq_lseek,
618 .release = seq_release,
619 };
620
621 static int filesystems_read_proc(char *page, char **start, off_t off,
622 int count, int *eof, void *data)
623 {
624 int len = get_filesystem_list(page);
625 return proc_calc_metrics(page, start, off, count, eof, len);
626 }
627
628 static int cmdline_read_proc(char *page, char **start, off_t off,
629 int count, int *eof, void *data)
630 {
631 int len;
632
633 len = sprintf(page, "%s\n", saved_command_line);
634 return proc_calc_metrics(page, start, off, count, eof, len);
635 }
636
637 static int locks_open(struct inode *inode, struct file *filp)
638 {
639 return seq_open(filp, &locks_seq_operations);
640 }
641
642 static const struct file_operations proc_locks_operations = {
643 .open = locks_open,
644 .read = seq_read,
645 .llseek = seq_lseek,
646 .release = seq_release,
647 };
648
649 static int execdomains_read_proc(char *page, char **start, off_t off,
650 int count, int *eof, void *data)
651 {
652 int len = get_exec_domain_list(page);
653 return proc_calc_metrics(page, start, off, count, eof, len);
654 }
655
656 #ifdef CONFIG_MAGIC_SYSRQ
657 /*
658 * writing 'C' to /proc/sysrq-trigger is like sysrq-C
659 */
660 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
661 size_t count, loff_t *ppos)
662 {
663 if (count) {
664 char c;
665
666 if (get_user(c, buf))
667 return -EFAULT;
668 __handle_sysrq(c, NULL, 0);
669 }
670 return count;
671 }
672
673 static const struct file_operations proc_sysrq_trigger_operations = {
674 .write = write_sysrq_trigger,
675 };
676 #endif
677
678 struct proc_dir_entry *proc_root_kcore;
679
680 void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
681 {
682 struct proc_dir_entry *entry;
683 entry = create_proc_entry(name, mode, NULL);
684 if (entry)
685 entry->proc_fops = f;
686 }
687
688 void __init proc_misc_init(void)
689 {
690 static struct {
691 char *name;
692 int (*read_proc)(char*,char**,off_t,int,int*,void*);
693 } *p, simple_ones[] = {
694 {"loadavg", loadavg_read_proc},
695 {"uptime", uptime_read_proc},
696 {"meminfo", meminfo_read_proc},
697 {"version", version_read_proc},
698 #ifdef CONFIG_PROC_HARDWARE
699 {"hardware", hardware_read_proc},
700 #endif
701 #ifdef CONFIG_STRAM_PROC
702 {"stram", stram_read_proc},
703 #endif
704 {"filesystems", filesystems_read_proc},
705 {"cmdline", cmdline_read_proc},
706 {"execdomains", execdomains_read_proc},
707 {NULL,}
708 };
709 for (p = simple_ones; p->name; p++)
710 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
711
712 proc_symlink("mounts", NULL, "self/mounts");
713
714 /* And now for trickier ones */
715 #ifdef CONFIG_PRINTK
716 {
717 struct proc_dir_entry *entry;
718 entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
719 if (entry)
720 entry->proc_fops = &proc_kmsg_operations;
721 }
722 #endif
723 create_seq_entry("locks", 0, &proc_locks_operations);
724 create_seq_entry("devices", 0, &proc_devinfo_operations);
725 create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
726 #ifdef CONFIG_BLOCK
727 create_seq_entry("partitions", 0, &proc_partitions_operations);
728 #endif
729 create_seq_entry("stat", 0, &proc_stat_operations);
730 create_seq_entry("interrupts", 0, &proc_interrupts_operations);
731 #ifdef CONFIG_SLAB
732 create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
733 #ifdef CONFIG_DEBUG_SLAB_LEAK
734 create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
735 #endif
736 #endif
737 create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
738 create_seq_entry("pagetypeinfo", S_IRUGO, &pagetypeinfo_file_ops);
739 create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
740 create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
741 #ifdef CONFIG_BLOCK
742 create_seq_entry("diskstats", 0, &proc_diskstats_operations);
743 #endif
744 #ifdef CONFIG_MODULES
745 create_seq_entry("modules", 0, &proc_modules_operations);
746 #endif
747 #ifdef CONFIG_SCHEDSTATS
748 create_seq_entry("schedstat", 0, &proc_schedstat_operations);
749 #endif
750 #ifdef CONFIG_PROC_KCORE
751 proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
752 if (proc_root_kcore) {
753 proc_root_kcore->proc_fops = &proc_kcore_operations;
754 proc_root_kcore->size =
755 (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
756 }
757 #endif
758 #ifdef CONFIG_PROC_VMCORE
759 proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
760 if (proc_vmcore)
761 proc_vmcore->proc_fops = &proc_vmcore_operations;
762 #endif
763 #ifdef CONFIG_MAGIC_SYSRQ
764 {
765 struct proc_dir_entry *entry;
766 entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
767 if (entry)
768 entry->proc_fops = &proc_sysrq_trigger_operations;
769 }
770 #endif
771 }
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