[PATCH] proc_misc warning fix
[linux-2.6.git] / 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/utsname.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 <linux/pid_namespace.h>
50 #include <asm/uaccess.h>
51 #include <asm/pgtable.h>
52 #include <asm/io.h>
53 #include <asm/tlb.h>
54 #include <asm/div64.h>
55 #include "internal.h"
56
57 #define LOAD_INT(x) ((x) >> FSHIFT)
58 #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
59 /*
60  * Warning: stuff below (imported functions) assumes that its output will fit
61  * into one page. For some of those functions it may be wrong. Moreover, we
62  * have a way to deal with that gracefully. Right now I used straightforward
63  * wrappers, but this needs further analysis wrt potential overflows.
64  */
65 extern int get_hardware_list(char *);
66 extern int get_stram_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
72 static int proc_calc_metrics(char *page, char **start, off_t off,
73                                  int count, int *eof, int len)
74 {
75         if (len <= off+count) *eof = 1;
76         *start = page + off;
77         len -= off;
78         if (len>count) len = count;
79         if (len<0) len = 0;
80         return len;
81 }
82
83 static int loadavg_read_proc(char *page, char **start, off_t off,
84                                  int count, int *eof, void *data)
85 {
86         int a, b, c;
87         int len;
88
89         a = avenrun[0] + (FIXED_1/200);
90         b = avenrun[1] + (FIXED_1/200);
91         c = avenrun[2] + (FIXED_1/200);
92         len = sprintf(page,"%d.%02d %d.%02d %d.%02d %ld/%d %d\n",
93                 LOAD_INT(a), LOAD_FRAC(a),
94                 LOAD_INT(b), LOAD_FRAC(b),
95                 LOAD_INT(c), LOAD_FRAC(c),
96                 nr_running(), nr_threads, current->nsproxy->pid_ns->last_pid);
97         return proc_calc_metrics(page, start, off, count, eof, len);
98 }
99
100 static int uptime_read_proc(char *page, char **start, off_t off,
101                                  int count, int *eof, void *data)
102 {
103         struct timespec uptime;
104         struct timespec idle;
105         int len;
106         cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
107
108         do_posix_clock_monotonic_gettime(&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 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 zoneinfo_op;
234 static int zoneinfo_open(struct inode *inode, struct file *file)
235 {
236         return seq_open(file, &zoneinfo_op);
237 }
238
239 static struct file_operations proc_zoneinfo_file_operations = {
240         .open           = zoneinfo_open,
241         .read           = seq_read,
242         .llseek         = seq_lseek,
243         .release        = seq_release,
244 };
245
246 static int version_read_proc(char *page, char **start, off_t off,
247                                  int count, int *eof, void *data)
248 {
249         int len;
250
251         len = snprintf(page, PAGE_SIZE, linux_proc_banner,
252                 utsname()->sysname,
253                 utsname()->release,
254                 utsname()->version);
255         return proc_calc_metrics(page, start, off, count, eof, len);
256 }
257
258 extern struct seq_operations cpuinfo_op;
259 static int cpuinfo_open(struct inode *inode, struct file *file)
260 {
261         return seq_open(file, &cpuinfo_op);
262 }
263
264 static struct file_operations proc_cpuinfo_operations = {
265         .open           = cpuinfo_open,
266         .read           = seq_read,
267         .llseek         = seq_lseek,
268         .release        = seq_release,
269 };
270
271 static int devinfo_show(struct seq_file *f, void *v)
272 {
273         int i = *(loff_t *) v;
274
275         if (i < CHRDEV_MAJOR_HASH_SIZE) {
276                 if (i == 0)
277                         seq_printf(f, "Character devices:\n");
278                 chrdev_show(f, i);
279         }
280 #ifdef CONFIG_BLOCK
281         else {
282                 i -= CHRDEV_MAJOR_HASH_SIZE;
283                 if (i == 0)
284                         seq_printf(f, "\nBlock devices:\n");
285                 blkdev_show(f, i);
286         }
287 #endif
288         return 0;
289 }
290
291 static void *devinfo_start(struct seq_file *f, loff_t *pos)
292 {
293         if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
294                 return pos;
295         return NULL;
296 }
297
298 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
299 {
300         (*pos)++;
301         if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
302                 return NULL;
303         return pos;
304 }
305
306 static void devinfo_stop(struct seq_file *f, void *v)
307 {
308         /* Nothing to do */
309 }
310
311 static struct seq_operations devinfo_ops = {
312         .start = devinfo_start,
313         .next  = devinfo_next,
314         .stop  = devinfo_stop,
315         .show  = devinfo_show
316 };
317
318 static int devinfo_open(struct inode *inode, struct file *filp)
319 {
320         return seq_open(filp, &devinfo_ops);
321 }
322
323 static struct file_operations proc_devinfo_operations = {
324         .open           = devinfo_open,
325         .read           = seq_read,
326         .llseek         = seq_lseek,
327         .release        = seq_release,
328 };
329
330 extern struct seq_operations vmstat_op;
331 static int vmstat_open(struct inode *inode, struct file *file)
332 {
333         return seq_open(file, &vmstat_op);
334 }
335 static struct file_operations proc_vmstat_file_operations = {
336         .open           = vmstat_open,
337         .read           = seq_read,
338         .llseek         = seq_lseek,
339         .release        = seq_release,
340 };
341
342 #ifdef CONFIG_PROC_HARDWARE
343 static int hardware_read_proc(char *page, char **start, off_t off,
344                                  int count, int *eof, void *data)
345 {
346         int len = get_hardware_list(page);
347         return proc_calc_metrics(page, start, off, count, eof, len);
348 }
349 #endif
350
351 #ifdef CONFIG_STRAM_PROC
352 static int stram_read_proc(char *page, char **start, off_t off,
353                                  int count, int *eof, void *data)
354 {
355         int len = get_stram_list(page);
356         return proc_calc_metrics(page, start, off, count, eof, len);
357 }
358 #endif
359
360 #ifdef CONFIG_BLOCK
361 extern struct seq_operations partitions_op;
362 static int partitions_open(struct inode *inode, struct file *file)
363 {
364         return seq_open(file, &partitions_op);
365 }
366 static struct file_operations proc_partitions_operations = {
367         .open           = partitions_open,
368         .read           = seq_read,
369         .llseek         = seq_lseek,
370         .release        = seq_release,
371 };
372
373 extern struct seq_operations diskstats_op;
374 static int diskstats_open(struct inode *inode, struct file *file)
375 {
376         return seq_open(file, &diskstats_op);
377 }
378 static struct file_operations proc_diskstats_operations = {
379         .open           = diskstats_open,
380         .read           = seq_read,
381         .llseek         = seq_lseek,
382         .release        = seq_release,
383 };
384 #endif
385
386 #ifdef CONFIG_MODULES
387 extern struct seq_operations modules_op;
388 static int modules_open(struct inode *inode, struct file *file)
389 {
390         return seq_open(file, &modules_op);
391 }
392 static struct file_operations proc_modules_operations = {
393         .open           = modules_open,
394         .read           = seq_read,
395         .llseek         = seq_lseek,
396         .release        = seq_release,
397 };
398 #endif
399
400 #ifdef CONFIG_SLAB
401 extern struct seq_operations slabinfo_op;
402 extern ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
403 static int slabinfo_open(struct inode *inode, struct file *file)
404 {
405         return seq_open(file, &slabinfo_op);
406 }
407 static struct file_operations proc_slabinfo_operations = {
408         .open           = slabinfo_open,
409         .read           = seq_read,
410         .write          = slabinfo_write,
411         .llseek         = seq_lseek,
412         .release        = seq_release,
413 };
414
415 #ifdef CONFIG_DEBUG_SLAB_LEAK
416 extern struct seq_operations slabstats_op;
417 static int slabstats_open(struct inode *inode, struct file *file)
418 {
419         unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
420         int ret = -ENOMEM;
421         if (n) {
422                 ret = seq_open(file, &slabstats_op);
423                 if (!ret) {
424                         struct seq_file *m = file->private_data;
425                         *n = PAGE_SIZE / (2 * sizeof(unsigned long));
426                         m->private = n;
427                         n = NULL;
428                 }
429                 kfree(n);
430         }
431         return ret;
432 }
433
434 static int slabstats_release(struct inode *inode, struct file *file)
435 {
436         struct seq_file *m = file->private_data;
437         kfree(m->private);
438         return seq_release(inode, file);
439 }
440
441 static struct file_operations proc_slabstats_operations = {
442         .open           = slabstats_open,
443         .read           = seq_read,
444         .llseek         = seq_lseek,
445         .release        = slabstats_release,
446 };
447 #endif
448 #endif
449
450 static int show_stat(struct seq_file *p, void *v)
451 {
452         int i;
453         unsigned long jif;
454         cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
455         u64 sum = 0;
456
457         user = nice = system = idle = iowait =
458                 irq = softirq = steal = cputime64_zero;
459         jif = - wall_to_monotonic.tv_sec;
460         if (wall_to_monotonic.tv_nsec)
461                 --jif;
462
463         for_each_possible_cpu(i) {
464                 int j;
465
466                 user = cputime64_add(user, kstat_cpu(i).cpustat.user);
467                 nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
468                 system = cputime64_add(system, kstat_cpu(i).cpustat.system);
469                 idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
470                 iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
471                 irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
472                 softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
473                 steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
474                 for (j = 0 ; j < NR_IRQS ; j++)
475                         sum += kstat_cpu(i).irqs[j];
476         }
477
478         seq_printf(p, "cpu  %llu %llu %llu %llu %llu %llu %llu %llu\n",
479                 (unsigned long long)cputime64_to_clock_t(user),
480                 (unsigned long long)cputime64_to_clock_t(nice),
481                 (unsigned long long)cputime64_to_clock_t(system),
482                 (unsigned long long)cputime64_to_clock_t(idle),
483                 (unsigned long long)cputime64_to_clock_t(iowait),
484                 (unsigned long long)cputime64_to_clock_t(irq),
485                 (unsigned long long)cputime64_to_clock_t(softirq),
486                 (unsigned long long)cputime64_to_clock_t(steal));
487         for_each_online_cpu(i) {
488
489                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
490                 user = kstat_cpu(i).cpustat.user;
491                 nice = kstat_cpu(i).cpustat.nice;
492                 system = kstat_cpu(i).cpustat.system;
493                 idle = kstat_cpu(i).cpustat.idle;
494                 iowait = kstat_cpu(i).cpustat.iowait;
495                 irq = kstat_cpu(i).cpustat.irq;
496                 softirq = kstat_cpu(i).cpustat.softirq;
497                 steal = kstat_cpu(i).cpustat.steal;
498                 seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
499                         i,
500                         (unsigned long long)cputime64_to_clock_t(user),
501                         (unsigned long long)cputime64_to_clock_t(nice),
502                         (unsigned long long)cputime64_to_clock_t(system),
503                         (unsigned long long)cputime64_to_clock_t(idle),
504                         (unsigned long long)cputime64_to_clock_t(iowait),
505                         (unsigned long long)cputime64_to_clock_t(irq),
506                         (unsigned long long)cputime64_to_clock_t(softirq),
507                         (unsigned long long)cputime64_to_clock_t(steal));
508         }
509         seq_printf(p, "intr %llu", (unsigned long long)sum);
510
511 #if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64)
512         for (i = 0; i < NR_IRQS; i++)
513                 seq_printf(p, " %u", kstat_irqs(i));
514 #endif
515
516         seq_printf(p,
517                 "\nctxt %llu\n"
518                 "btime %lu\n"
519                 "processes %lu\n"
520                 "procs_running %lu\n"
521                 "procs_blocked %lu\n",
522                 nr_context_switches(),
523                 (unsigned long)jif,
524                 total_forks,
525                 nr_running(),
526                 nr_iowait());
527
528         return 0;
529 }
530
531 static int stat_open(struct inode *inode, struct file *file)
532 {
533         unsigned size = 4096 * (1 + num_possible_cpus() / 32);
534         char *buf;
535         struct seq_file *m;
536         int res;
537
538         /* don't ask for more than the kmalloc() max size, currently 128 KB */
539         if (size > 128 * 1024)
540                 size = 128 * 1024;
541         buf = kmalloc(size, GFP_KERNEL);
542         if (!buf)
543                 return -ENOMEM;
544
545         res = single_open(file, show_stat, NULL);
546         if (!res) {
547                 m = file->private_data;
548                 m->buf = buf;
549                 m->size = size;
550         } else
551                 kfree(buf);
552         return res;
553 }
554 static struct file_operations proc_stat_operations = {
555         .open           = stat_open,
556         .read           = seq_read,
557         .llseek         = seq_lseek,
558         .release        = single_release,
559 };
560
561 /*
562  * /proc/interrupts
563  */
564 static void *int_seq_start(struct seq_file *f, loff_t *pos)
565 {
566         return (*pos <= NR_IRQS) ? pos : NULL;
567 }
568
569 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
570 {
571         (*pos)++;
572         if (*pos > NR_IRQS)
573                 return NULL;
574         return pos;
575 }
576
577 static void int_seq_stop(struct seq_file *f, void *v)
578 {
579         /* Nothing to do */
580 }
581
582
583 extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
584 static struct seq_operations int_seq_ops = {
585         .start = int_seq_start,
586         .next  = int_seq_next,
587         .stop  = int_seq_stop,
588         .show  = show_interrupts
589 };
590
591 static int interrupts_open(struct inode *inode, struct file *filp)
592 {
593         return seq_open(filp, &int_seq_ops);
594 }
595
596 static struct file_operations proc_interrupts_operations = {
597         .open           = interrupts_open,
598         .read           = seq_read,
599         .llseek         = seq_lseek,
600         .release        = seq_release,
601 };
602
603 static int filesystems_read_proc(char *page, char **start, off_t off,
604                                  int count, int *eof, void *data)
605 {
606         int len = get_filesystem_list(page);
607         return proc_calc_metrics(page, start, off, count, eof, len);
608 }
609
610 static int cmdline_read_proc(char *page, char **start, off_t off,
611                                  int count, int *eof, void *data)
612 {
613         int len;
614
615         len = sprintf(page, "%s\n", saved_command_line);
616         return proc_calc_metrics(page, start, off, count, eof, len);
617 }
618
619 static int locks_read_proc(char *page, char **start, off_t off,
620                                  int count, int *eof, void *data)
621 {
622         int len = get_locks_status(page, start, off, count);
623
624         if (len < count)
625                 *eof = 1;
626         return len;
627 }
628
629 static int execdomains_read_proc(char *page, char **start, off_t off,
630                                  int count, int *eof, void *data)
631 {
632         int len = get_exec_domain_list(page);
633         return proc_calc_metrics(page, start, off, count, eof, len);
634 }
635
636 #ifdef CONFIG_MAGIC_SYSRQ
637 /*
638  * writing 'C' to /proc/sysrq-trigger is like sysrq-C
639  */
640 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
641                                    size_t count, loff_t *ppos)
642 {
643         if (count) {
644                 char c;
645
646                 if (get_user(c, buf))
647                         return -EFAULT;
648                 __handle_sysrq(c, NULL, 0);
649         }
650         return count;
651 }
652
653 static struct file_operations proc_sysrq_trigger_operations = {
654         .write          = write_sysrq_trigger,
655 };
656 #endif
657
658 struct proc_dir_entry *proc_root_kcore;
659
660 void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
661 {
662         struct proc_dir_entry *entry;
663         entry = create_proc_entry(name, mode, NULL);
664         if (entry)
665                 entry->proc_fops = f;
666 }
667
668 void __init proc_misc_init(void)
669 {
670         static struct {
671                 char *name;
672                 int (*read_proc)(char*,char**,off_t,int,int*,void*);
673         } *p, simple_ones[] = {
674                 {"loadavg",     loadavg_read_proc},
675                 {"uptime",      uptime_read_proc},
676                 {"meminfo",     meminfo_read_proc},
677                 {"version",     version_read_proc},
678 #ifdef CONFIG_PROC_HARDWARE
679                 {"hardware",    hardware_read_proc},
680 #endif
681 #ifdef CONFIG_STRAM_PROC
682                 {"stram",       stram_read_proc},
683 #endif
684                 {"filesystems", filesystems_read_proc},
685                 {"cmdline",     cmdline_read_proc},
686                 {"locks",       locks_read_proc},
687                 {"execdomains", execdomains_read_proc},
688                 {NULL,}
689         };
690         for (p = simple_ones; p->name; p++)
691                 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
692
693         proc_symlink("mounts", NULL, "self/mounts");
694
695         /* And now for trickier ones */
696 #ifdef CONFIG_PRINTK
697         {
698                 struct proc_dir_entry *entry;
699                 entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
700                 if (entry)
701                         entry->proc_fops = &proc_kmsg_operations;
702         }
703 #endif
704         create_seq_entry("devices", 0, &proc_devinfo_operations);
705         create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
706 #ifdef CONFIG_BLOCK
707         create_seq_entry("partitions", 0, &proc_partitions_operations);
708 #endif
709         create_seq_entry("stat", 0, &proc_stat_operations);
710         create_seq_entry("interrupts", 0, &proc_interrupts_operations);
711 #ifdef CONFIG_SLAB
712         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
713 #ifdef CONFIG_DEBUG_SLAB_LEAK
714         create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
715 #endif
716 #endif
717         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
718         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
719         create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
720 #ifdef CONFIG_BLOCK
721         create_seq_entry("diskstats", 0, &proc_diskstats_operations);
722 #endif
723 #ifdef CONFIG_MODULES
724         create_seq_entry("modules", 0, &proc_modules_operations);
725 #endif
726 #ifdef CONFIG_SCHEDSTATS
727         create_seq_entry("schedstat", 0, &proc_schedstat_operations);
728 #endif
729 #ifdef CONFIG_PROC_KCORE
730         proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
731         if (proc_root_kcore) {
732                 proc_root_kcore->proc_fops = &proc_kcore_operations;
733                 proc_root_kcore->size =
734                                 (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
735         }
736 #endif
737 #ifdef CONFIG_PROC_VMCORE
738         proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
739         if (proc_vmcore)
740                 proc_vmcore->proc_fops = &proc_vmcore_operations;
741 #endif
742 #ifdef CONFIG_MAGIC_SYSRQ
743         {
744                 struct proc_dir_entry *entry;
745                 entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
746                 if (entry)
747                         entry->proc_fops = &proc_sysrq_trigger_operations;
748         }
749 #endif
750 }