Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
[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/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         unsigned long inactive;
123         unsigned long active;
124         unsigned long free;
125         unsigned long committed;
126         unsigned long allowed;
127         struct vmalloc_info vmi;
128         long cached;
129
130         get_zone_counts(&active, &inactive, &free);
131
132 /*
133  * display in kilobytes.
134  */
135 #define K(x) ((x) << (PAGE_SHIFT - 10))
136         si_meminfo(&i);
137         si_swapinfo(&i);
138         committed = atomic_read(&vm_committed_space);
139         allowed = ((totalram_pages - hugetlb_total_pages())
140                 * sysctl_overcommit_ratio / 100) + total_swap_pages;
141
142         cached = global_page_state(NR_FILE_PAGES) -
143                         total_swapcache_pages - i.bufferram;
144         if (cached < 0)
145                 cached = 0;
146
147         get_vmalloc_info(&vmi);
148
149         /*
150          * Tagged format, for easy grepping and expansion.
151          */
152         len = sprintf(page,
153                 "MemTotal:     %8lu kB\n"
154                 "MemFree:      %8lu kB\n"
155                 "Buffers:      %8lu kB\n"
156                 "Cached:       %8lu kB\n"
157                 "SwapCached:   %8lu kB\n"
158                 "Active:       %8lu kB\n"
159                 "Inactive:     %8lu kB\n"
160                 "HighTotal:    %8lu kB\n"
161                 "HighFree:     %8lu kB\n"
162                 "LowTotal:     %8lu kB\n"
163                 "LowFree:      %8lu kB\n"
164                 "SwapTotal:    %8lu kB\n"
165                 "SwapFree:     %8lu kB\n"
166                 "Dirty:        %8lu kB\n"
167                 "Writeback:    %8lu kB\n"
168                 "AnonPages:    %8lu kB\n"
169                 "Mapped:       %8lu kB\n"
170                 "Slab:         %8lu kB\n"
171                 "PageTables:   %8lu kB\n"
172                 "NFS Unstable: %8lu kB\n"
173                 "Bounce:       %8lu kB\n"
174                 "CommitLimit:  %8lu kB\n"
175                 "Committed_AS: %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(global_page_state(NR_FILE_DIRTY)),
193                 K(global_page_state(NR_WRITEBACK)),
194                 K(global_page_state(NR_ANON_PAGES)),
195                 K(global_page_state(NR_FILE_MAPPED)),
196                 K(global_page_state(NR_SLAB)),
197                 K(global_page_state(NR_PAGETABLE)),
198                 K(global_page_state(NR_UNSTABLE_NFS)),
199                 K(global_page_state(NR_BOUNCE)),
200                 K(allowed),
201                 K(committed),
202                 (unsigned long)VMALLOC_TOTAL >> 10,
203                 vmi.used >> 10,
204                 vmi.largest_chunk >> 10
205                 );
206
207                 len += hugetlb_report_meminfo(page + len);
208
209         return proc_calc_metrics(page, start, off, count, eof, len);
210 #undef K
211 }
212
213 extern struct seq_operations fragmentation_op;
214 static int fragmentation_open(struct inode *inode, struct file *file)
215 {
216         (void)inode;
217         return seq_open(file, &fragmentation_op);
218 }
219
220 static struct file_operations fragmentation_file_operations = {
221         .open           = fragmentation_open,
222         .read           = seq_read,
223         .llseek         = seq_lseek,
224         .release        = seq_release,
225 };
226
227 extern struct seq_operations zoneinfo_op;
228 static int zoneinfo_open(struct inode *inode, struct file *file)
229 {
230         return seq_open(file, &zoneinfo_op);
231 }
232
233 static struct file_operations proc_zoneinfo_file_operations = {
234         .open           = zoneinfo_open,
235         .read           = seq_read,
236         .llseek         = seq_lseek,
237         .release        = seq_release,
238 };
239
240 static int version_read_proc(char *page, char **start, off_t off,
241                                  int count, int *eof, void *data)
242 {
243         int len;
244
245         strcpy(page, linux_banner);
246         len = strlen(page);
247         return proc_calc_metrics(page, start, off, count, eof, len);
248 }
249
250 extern struct seq_operations cpuinfo_op;
251 static int cpuinfo_open(struct inode *inode, struct file *file)
252 {
253         return seq_open(file, &cpuinfo_op);
254 }
255
256 static struct file_operations proc_cpuinfo_operations = {
257         .open           = cpuinfo_open,
258         .read           = seq_read,
259         .llseek         = seq_lseek,
260         .release        = seq_release,
261 };
262
263 static int devinfo_show(struct seq_file *f, void *v)
264 {
265         int i = *(loff_t *) v;
266
267         if (i < CHRDEV_MAJOR_HASH_SIZE) {
268                 if (i == 0)
269                         seq_printf(f, "Character devices:\n");
270                 chrdev_show(f, i);
271         } else {
272                 i -= CHRDEV_MAJOR_HASH_SIZE;
273                 if (i == 0)
274                         seq_printf(f, "\nBlock devices:\n");
275                 blkdev_show(f, i);
276         }
277         return 0;
278 }
279
280 static void *devinfo_start(struct seq_file *f, loff_t *pos)
281 {
282         if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
283                 return pos;
284         return NULL;
285 }
286
287 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
288 {
289         (*pos)++;
290         if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
291                 return NULL;
292         return pos;
293 }
294
295 static void devinfo_stop(struct seq_file *f, void *v)
296 {
297         /* Nothing to do */
298 }
299
300 static struct seq_operations devinfo_ops = {
301         .start = devinfo_start,
302         .next  = devinfo_next,
303         .stop  = devinfo_stop,
304         .show  = devinfo_show
305 };
306
307 static int devinfo_open(struct inode *inode, struct file *filp)
308 {
309         return seq_open(filp, &devinfo_ops);
310 }
311
312 static struct file_operations proc_devinfo_operations = {
313         .open           = devinfo_open,
314         .read           = seq_read,
315         .llseek         = seq_lseek,
316         .release        = seq_release,
317 };
318
319 extern struct seq_operations vmstat_op;
320 static int vmstat_open(struct inode *inode, struct file *file)
321 {
322         return seq_open(file, &vmstat_op);
323 }
324 static struct file_operations proc_vmstat_file_operations = {
325         .open           = vmstat_open,
326         .read           = seq_read,
327         .llseek         = seq_lseek,
328         .release        = seq_release,
329 };
330
331 #ifdef CONFIG_PROC_HARDWARE
332 static int hardware_read_proc(char *page, char **start, off_t off,
333                                  int count, int *eof, void *data)
334 {
335         int len = get_hardware_list(page);
336         return proc_calc_metrics(page, start, off, count, eof, len);
337 }
338 #endif
339
340 #ifdef CONFIG_STRAM_PROC
341 static int stram_read_proc(char *page, char **start, off_t off,
342                                  int count, int *eof, void *data)
343 {
344         int len = get_stram_list(page);
345         return proc_calc_metrics(page, start, off, count, eof, len);
346 }
347 #endif
348
349 extern struct seq_operations partitions_op;
350 static int partitions_open(struct inode *inode, struct file *file)
351 {
352         return seq_open(file, &partitions_op);
353 }
354 static struct file_operations proc_partitions_operations = {
355         .open           = partitions_open,
356         .read           = seq_read,
357         .llseek         = seq_lseek,
358         .release        = seq_release,
359 };
360
361 extern struct seq_operations diskstats_op;
362 static int diskstats_open(struct inode *inode, struct file *file)
363 {
364         return seq_open(file, &diskstats_op);
365 }
366 static struct file_operations proc_diskstats_operations = {
367         .open           = diskstats_open,
368         .read           = seq_read,
369         .llseek         = seq_lseek,
370         .release        = seq_release,
371 };
372
373 #ifdef CONFIG_MODULES
374 extern struct seq_operations modules_op;
375 static int modules_open(struct inode *inode, struct file *file)
376 {
377         return seq_open(file, &modules_op);
378 }
379 static struct file_operations proc_modules_operations = {
380         .open           = modules_open,
381         .read           = seq_read,
382         .llseek         = seq_lseek,
383         .release        = seq_release,
384 };
385 #endif
386
387 #ifdef CONFIG_SLAB
388 extern struct seq_operations slabinfo_op;
389 extern ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
390 static int slabinfo_open(struct inode *inode, struct file *file)
391 {
392         return seq_open(file, &slabinfo_op);
393 }
394 static struct file_operations proc_slabinfo_operations = {
395         .open           = slabinfo_open,
396         .read           = seq_read,
397         .write          = slabinfo_write,
398         .llseek         = seq_lseek,
399         .release        = seq_release,
400 };
401
402 #ifdef CONFIG_DEBUG_SLAB_LEAK
403 extern struct seq_operations slabstats_op;
404 static int slabstats_open(struct inode *inode, struct file *file)
405 {
406         unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
407         int ret = -ENOMEM;
408         if (n) {
409                 ret = seq_open(file, &slabstats_op);
410                 if (!ret) {
411                         struct seq_file *m = file->private_data;
412                         *n = PAGE_SIZE / (2 * sizeof(unsigned long));
413                         m->private = n;
414                         n = NULL;
415                 }
416                 kfree(n);
417         }
418         return ret;
419 }
420
421 static int slabstats_release(struct inode *inode, struct file *file)
422 {
423         struct seq_file *m = file->private_data;
424         kfree(m->private);
425         return seq_release(inode, file);
426 }
427
428 static struct file_operations proc_slabstats_operations = {
429         .open           = slabstats_open,
430         .read           = seq_read,
431         .llseek         = seq_lseek,
432         .release        = slabstats_release,
433 };
434 #endif
435 #endif
436
437 static int show_stat(struct seq_file *p, void *v)
438 {
439         int i;
440         unsigned long jif;
441         cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
442         u64 sum = 0;
443
444         user = nice = system = idle = iowait =
445                 irq = softirq = steal = cputime64_zero;
446         jif = - wall_to_monotonic.tv_sec;
447         if (wall_to_monotonic.tv_nsec)
448                 --jif;
449
450         for_each_possible_cpu(i) {
451                 int j;
452
453                 user = cputime64_add(user, kstat_cpu(i).cpustat.user);
454                 nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
455                 system = cputime64_add(system, kstat_cpu(i).cpustat.system);
456                 idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
457                 iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
458                 irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
459                 softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
460                 steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
461                 for (j = 0 ; j < NR_IRQS ; j++)
462                         sum += kstat_cpu(i).irqs[j];
463         }
464
465         seq_printf(p, "cpu  %llu %llu %llu %llu %llu %llu %llu %llu\n",
466                 (unsigned long long)cputime64_to_clock_t(user),
467                 (unsigned long long)cputime64_to_clock_t(nice),
468                 (unsigned long long)cputime64_to_clock_t(system),
469                 (unsigned long long)cputime64_to_clock_t(idle),
470                 (unsigned long long)cputime64_to_clock_t(iowait),
471                 (unsigned long long)cputime64_to_clock_t(irq),
472                 (unsigned long long)cputime64_to_clock_t(softirq),
473                 (unsigned long long)cputime64_to_clock_t(steal));
474         for_each_online_cpu(i) {
475
476                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
477                 user = kstat_cpu(i).cpustat.user;
478                 nice = kstat_cpu(i).cpustat.nice;
479                 system = kstat_cpu(i).cpustat.system;
480                 idle = kstat_cpu(i).cpustat.idle;
481                 iowait = kstat_cpu(i).cpustat.iowait;
482                 irq = kstat_cpu(i).cpustat.irq;
483                 softirq = kstat_cpu(i).cpustat.softirq;
484                 steal = kstat_cpu(i).cpustat.steal;
485                 seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
486                         i,
487                         (unsigned long long)cputime64_to_clock_t(user),
488                         (unsigned long long)cputime64_to_clock_t(nice),
489                         (unsigned long long)cputime64_to_clock_t(system),
490                         (unsigned long long)cputime64_to_clock_t(idle),
491                         (unsigned long long)cputime64_to_clock_t(iowait),
492                         (unsigned long long)cputime64_to_clock_t(irq),
493                         (unsigned long long)cputime64_to_clock_t(softirq),
494                         (unsigned long long)cputime64_to_clock_t(steal));
495         }
496         seq_printf(p, "intr %llu", (unsigned long long)sum);
497
498 #if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64)
499         for (i = 0; i < NR_IRQS; i++)
500                 seq_printf(p, " %u", kstat_irqs(i));
501 #endif
502
503         seq_printf(p,
504                 "\nctxt %llu\n"
505                 "btime %lu\n"
506                 "processes %lu\n"
507                 "procs_running %lu\n"
508                 "procs_blocked %lu\n",
509                 nr_context_switches(),
510                 (unsigned long)jif,
511                 total_forks,
512                 nr_running(),
513                 nr_iowait());
514
515         return 0;
516 }
517
518 static int stat_open(struct inode *inode, struct file *file)
519 {
520         unsigned size = 4096 * (1 + num_possible_cpus() / 32);
521         char *buf;
522         struct seq_file *m;
523         int res;
524
525         /* don't ask for more than the kmalloc() max size, currently 128 KB */
526         if (size > 128 * 1024)
527                 size = 128 * 1024;
528         buf = kmalloc(size, GFP_KERNEL);
529         if (!buf)
530                 return -ENOMEM;
531
532         res = single_open(file, show_stat, NULL);
533         if (!res) {
534                 m = file->private_data;
535                 m->buf = buf;
536                 m->size = size;
537         } else
538                 kfree(buf);
539         return res;
540 }
541 static struct file_operations proc_stat_operations = {
542         .open           = stat_open,
543         .read           = seq_read,
544         .llseek         = seq_lseek,
545         .release        = single_release,
546 };
547
548 /*
549  * /proc/interrupts
550  */
551 static void *int_seq_start(struct seq_file *f, loff_t *pos)
552 {
553         return (*pos <= NR_IRQS) ? pos : NULL;
554 }
555
556 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
557 {
558         (*pos)++;
559         if (*pos > NR_IRQS)
560                 return NULL;
561         return pos;
562 }
563
564 static void int_seq_stop(struct seq_file *f, void *v)
565 {
566         /* Nothing to do */
567 }
568
569
570 extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
571 static struct seq_operations int_seq_ops = {
572         .start = int_seq_start,
573         .next  = int_seq_next,
574         .stop  = int_seq_stop,
575         .show  = show_interrupts
576 };
577
578 static int interrupts_open(struct inode *inode, struct file *filp)
579 {
580         return seq_open(filp, &int_seq_ops);
581 }
582
583 static struct file_operations proc_interrupts_operations = {
584         .open           = interrupts_open,
585         .read           = seq_read,
586         .llseek         = seq_lseek,
587         .release        = seq_release,
588 };
589
590 static int filesystems_read_proc(char *page, char **start, off_t off,
591                                  int count, int *eof, void *data)
592 {
593         int len = get_filesystem_list(page);
594         return proc_calc_metrics(page, start, off, count, eof, len);
595 }
596
597 static int cmdline_read_proc(char *page, char **start, off_t off,
598                                  int count, int *eof, void *data)
599 {
600         int len;
601
602         len = sprintf(page, "%s\n", saved_command_line);
603         return proc_calc_metrics(page, start, off, count, eof, len);
604 }
605
606 static int locks_read_proc(char *page, char **start, off_t off,
607                                  int count, int *eof, void *data)
608 {
609         int len = get_locks_status(page, start, off, count);
610
611         if (len < count)
612                 *eof = 1;
613         return len;
614 }
615
616 static int execdomains_read_proc(char *page, char **start, off_t off,
617                                  int count, int *eof, void *data)
618 {
619         int len = get_exec_domain_list(page);
620         return proc_calc_metrics(page, start, off, count, eof, len);
621 }
622
623 #ifdef CONFIG_MAGIC_SYSRQ
624 /*
625  * writing 'C' to /proc/sysrq-trigger is like sysrq-C
626  */
627 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
628                                    size_t count, loff_t *ppos)
629 {
630         if (count) {
631                 char c;
632
633                 if (get_user(c, buf))
634                         return -EFAULT;
635                 __handle_sysrq(c, NULL, NULL, 0);
636         }
637         return count;
638 }
639
640 static struct file_operations proc_sysrq_trigger_operations = {
641         .write          = write_sysrq_trigger,
642 };
643 #endif
644
645 struct proc_dir_entry *proc_root_kcore;
646
647 void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
648 {
649         struct proc_dir_entry *entry;
650         entry = create_proc_entry(name, mode, NULL);
651         if (entry)
652                 entry->proc_fops = f;
653 }
654
655 void __init proc_misc_init(void)
656 {
657         struct proc_dir_entry *entry;
658         static struct {
659                 char *name;
660                 int (*read_proc)(char*,char**,off_t,int,int*,void*);
661         } *p, simple_ones[] = {
662                 {"loadavg",     loadavg_read_proc},
663                 {"uptime",      uptime_read_proc},
664                 {"meminfo",     meminfo_read_proc},
665                 {"version",     version_read_proc},
666 #ifdef CONFIG_PROC_HARDWARE
667                 {"hardware",    hardware_read_proc},
668 #endif
669 #ifdef CONFIG_STRAM_PROC
670                 {"stram",       stram_read_proc},
671 #endif
672                 {"filesystems", filesystems_read_proc},
673                 {"cmdline",     cmdline_read_proc},
674                 {"locks",       locks_read_proc},
675                 {"execdomains", execdomains_read_proc},
676                 {NULL,}
677         };
678         for (p = simple_ones; p->name; p++)
679                 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
680
681         proc_symlink("mounts", NULL, "self/mounts");
682
683         /* And now for trickier ones */
684         entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
685         if (entry)
686                 entry->proc_fops = &proc_kmsg_operations;
687         create_seq_entry("devices", 0, &proc_devinfo_operations);
688         create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
689         create_seq_entry("partitions", 0, &proc_partitions_operations);
690         create_seq_entry("stat", 0, &proc_stat_operations);
691         create_seq_entry("interrupts", 0, &proc_interrupts_operations);
692 #ifdef CONFIG_SLAB
693         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
694 #ifdef CONFIG_DEBUG_SLAB_LEAK
695         create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
696 #endif
697 #endif
698         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
699         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
700         create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
701         create_seq_entry("diskstats", 0, &proc_diskstats_operations);
702 #ifdef CONFIG_MODULES
703         create_seq_entry("modules", 0, &proc_modules_operations);
704 #endif
705 #ifdef CONFIG_SCHEDSTATS
706         create_seq_entry("schedstat", 0, &proc_schedstat_operations);
707 #endif
708 #ifdef CONFIG_PROC_KCORE
709         proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
710         if (proc_root_kcore) {
711                 proc_root_kcore->proc_fops = &proc_kcore_operations;
712                 proc_root_kcore->size =
713                                 (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
714         }
715 #endif
716 #ifdef CONFIG_PROC_VMCORE
717         proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
718         if (proc_vmcore)
719                 proc_vmcore->proc_fops = &proc_vmcore_operations;
720 #endif
721 #ifdef CONFIG_MAGIC_SYSRQ
722         entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
723         if (entry)
724                 entry->proc_fops = &proc_sysrq_trigger_operations;
725 #endif
726 }