[PATCH] zoned vm counters: conversion of nr_bounce to per zone counter
[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/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         unsigned long inactive;
124         unsigned long active;
125         unsigned long free;
126         unsigned long committed;
127         unsigned long allowed;
128         struct vmalloc_info vmi;
129         long cached;
130
131         get_zone_counts(&active, &inactive, &free);
132
133 /*
134  * display in kilobytes.
135  */
136 #define K(x) ((x) << (PAGE_SHIFT - 10))
137         si_meminfo(&i);
138         si_swapinfo(&i);
139         committed = atomic_read(&vm_committed_space);
140         allowed = ((totalram_pages - hugetlb_total_pages())
141                 * sysctl_overcommit_ratio / 100) + total_swap_pages;
142
143         cached = global_page_state(NR_FILE_PAGES) -
144                         total_swapcache_pages - i.bufferram;
145         if (cached < 0)
146                 cached = 0;
147
148         get_vmalloc_info(&vmi);
149
150         /*
151          * Tagged format, for easy grepping and expansion.
152          */
153         len = sprintf(page,
154                 "MemTotal:     %8lu kB\n"
155                 "MemFree:      %8lu kB\n"
156                 "Buffers:      %8lu kB\n"
157                 "Cached:       %8lu kB\n"
158                 "SwapCached:   %8lu kB\n"
159                 "Active:       %8lu kB\n"
160                 "Inactive:     %8lu kB\n"
161                 "HighTotal:    %8lu kB\n"
162                 "HighFree:     %8lu kB\n"
163                 "LowTotal:     %8lu kB\n"
164                 "LowFree:      %8lu kB\n"
165                 "SwapTotal:    %8lu kB\n"
166                 "SwapFree:     %8lu kB\n"
167                 "Dirty:        %8lu kB\n"
168                 "Writeback:    %8lu kB\n"
169                 "AnonPages:    %8lu kB\n"
170                 "Mapped:       %8lu kB\n"
171                 "Slab:         %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(active),
186                 K(inactive),
187                 K(i.totalhigh),
188                 K(i.freehigh),
189                 K(i.totalram-i.totalhigh),
190                 K(i.freeram-i.freehigh),
191                 K(i.totalswap),
192                 K(i.freeswap),
193                 K(global_page_state(NR_FILE_DIRTY)),
194                 K(global_page_state(NR_WRITEBACK)),
195                 K(global_page_state(NR_ANON_PAGES)),
196                 K(global_page_state(NR_FILE_MAPPED)),
197                 K(global_page_state(NR_SLAB)),
198                 K(global_page_state(NR_PAGETABLE)),
199                 K(global_page_state(NR_UNSTABLE_NFS)),
200                 K(global_page_state(NR_BOUNCE)),
201                 K(allowed),
202                 K(committed),
203                 (unsigned long)VMALLOC_TOTAL >> 10,
204                 vmi.used >> 10,
205                 vmi.largest_chunk >> 10
206                 );
207
208                 len += hugetlb_report_meminfo(page + len);
209
210         return proc_calc_metrics(page, start, off, count, eof, len);
211 #undef K
212 }
213
214 extern struct seq_operations fragmentation_op;
215 static int fragmentation_open(struct inode *inode, struct file *file)
216 {
217         (void)inode;
218         return seq_open(file, &fragmentation_op);
219 }
220
221 static struct file_operations fragmentation_file_operations = {
222         .open           = fragmentation_open,
223         .read           = seq_read,
224         .llseek         = seq_lseek,
225         .release        = seq_release,
226 };
227
228 extern struct seq_operations zoneinfo_op;
229 static int zoneinfo_open(struct inode *inode, struct file *file)
230 {
231         return seq_open(file, &zoneinfo_op);
232 }
233
234 static struct file_operations proc_zoneinfo_file_operations = {
235         .open           = zoneinfo_open,
236         .read           = seq_read,
237         .llseek         = seq_lseek,
238         .release        = seq_release,
239 };
240
241 static int version_read_proc(char *page, char **start, off_t off,
242                                  int count, int *eof, void *data)
243 {
244         int len;
245
246         strcpy(page, linux_banner);
247         len = strlen(page);
248         return proc_calc_metrics(page, start, off, count, eof, len);
249 }
250
251 extern struct seq_operations cpuinfo_op;
252 static int cpuinfo_open(struct inode *inode, struct file *file)
253 {
254         return seq_open(file, &cpuinfo_op);
255 }
256
257 static struct file_operations proc_cpuinfo_operations = {
258         .open           = cpuinfo_open,
259         .read           = seq_read,
260         .llseek         = seq_lseek,
261         .release        = seq_release,
262 };
263
264 static int devinfo_show(struct seq_file *f, void *v)
265 {
266         int i = *(loff_t *) v;
267
268         if (i < CHRDEV_MAJOR_HASH_SIZE) {
269                 if (i == 0)
270                         seq_printf(f, "Character devices:\n");
271                 chrdev_show(f, i);
272         } else {
273                 i -= CHRDEV_MAJOR_HASH_SIZE;
274                 if (i == 0)
275                         seq_printf(f, "\nBlock devices:\n");
276                 blkdev_show(f, i);
277         }
278         return 0;
279 }
280
281 static void *devinfo_start(struct seq_file *f, loff_t *pos)
282 {
283         if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
284                 return pos;
285         return NULL;
286 }
287
288 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
289 {
290         (*pos)++;
291         if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
292                 return NULL;
293         return pos;
294 }
295
296 static void devinfo_stop(struct seq_file *f, void *v)
297 {
298         /* Nothing to do */
299 }
300
301 static struct seq_operations devinfo_ops = {
302         .start = devinfo_start,
303         .next  = devinfo_next,
304         .stop  = devinfo_stop,
305         .show  = devinfo_show
306 };
307
308 static int devinfo_open(struct inode *inode, struct file *filp)
309 {
310         return seq_open(filp, &devinfo_ops);
311 }
312
313 static struct file_operations proc_devinfo_operations = {
314         .open           = devinfo_open,
315         .read           = seq_read,
316         .llseek         = seq_lseek,
317         .release        = seq_release,
318 };
319
320 extern struct seq_operations vmstat_op;
321 static int vmstat_open(struct inode *inode, struct file *file)
322 {
323         return seq_open(file, &vmstat_op);
324 }
325 static struct file_operations proc_vmstat_file_operations = {
326         .open           = vmstat_open,
327         .read           = seq_read,
328         .llseek         = seq_lseek,
329         .release        = seq_release,
330 };
331
332 #ifdef CONFIG_PROC_HARDWARE
333 static int hardware_read_proc(char *page, char **start, off_t off,
334                                  int count, int *eof, void *data)
335 {
336         int len = get_hardware_list(page);
337         return proc_calc_metrics(page, start, off, count, eof, len);
338 }
339 #endif
340
341 #ifdef CONFIG_STRAM_PROC
342 static int stram_read_proc(char *page, char **start, off_t off,
343                                  int count, int *eof, void *data)
344 {
345         int len = get_stram_list(page);
346         return proc_calc_metrics(page, start, off, count, eof, len);
347 }
348 #endif
349
350 extern struct seq_operations partitions_op;
351 static int partitions_open(struct inode *inode, struct file *file)
352 {
353         return seq_open(file, &partitions_op);
354 }
355 static struct file_operations proc_partitions_operations = {
356         .open           = partitions_open,
357         .read           = seq_read,
358         .llseek         = seq_lseek,
359         .release        = seq_release,
360 };
361
362 extern struct seq_operations diskstats_op;
363 static int diskstats_open(struct inode *inode, struct file *file)
364 {
365         return seq_open(file, &diskstats_op);
366 }
367 static struct file_operations proc_diskstats_operations = {
368         .open           = diskstats_open,
369         .read           = seq_read,
370         .llseek         = seq_lseek,
371         .release        = seq_release,
372 };
373
374 #ifdef CONFIG_MODULES
375 extern struct seq_operations modules_op;
376 static int modules_open(struct inode *inode, struct file *file)
377 {
378         return seq_open(file, &modules_op);
379 }
380 static struct file_operations proc_modules_operations = {
381         .open           = modules_open,
382         .read           = seq_read,
383         .llseek         = seq_lseek,
384         .release        = seq_release,
385 };
386 #endif
387
388 #ifdef CONFIG_SLAB
389 extern struct seq_operations slabinfo_op;
390 extern ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *);
391 static int slabinfo_open(struct inode *inode, struct file *file)
392 {
393         return seq_open(file, &slabinfo_op);
394 }
395 static struct file_operations proc_slabinfo_operations = {
396         .open           = slabinfo_open,
397         .read           = seq_read,
398         .write          = slabinfo_write,
399         .llseek         = seq_lseek,
400         .release        = seq_release,
401 };
402
403 #ifdef CONFIG_DEBUG_SLAB_LEAK
404 extern struct seq_operations slabstats_op;
405 static int slabstats_open(struct inode *inode, struct file *file)
406 {
407         unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
408         int ret = -ENOMEM;
409         if (n) {
410                 ret = seq_open(file, &slabstats_op);
411                 if (!ret) {
412                         struct seq_file *m = file->private_data;
413                         *n = PAGE_SIZE / (2 * sizeof(unsigned long));
414                         m->private = n;
415                         n = NULL;
416                 }
417                 kfree(n);
418         }
419         return ret;
420 }
421
422 static int slabstats_release(struct inode *inode, struct file *file)
423 {
424         struct seq_file *m = file->private_data;
425         kfree(m->private);
426         return seq_release(inode, file);
427 }
428
429 static struct file_operations proc_slabstats_operations = {
430         .open           = slabstats_open,
431         .read           = seq_read,
432         .llseek         = seq_lseek,
433         .release        = slabstats_release,
434 };
435 #endif
436 #endif
437
438 static int show_stat(struct seq_file *p, void *v)
439 {
440         int i;
441         unsigned long jif;
442         cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
443         u64 sum = 0;
444
445         user = nice = system = idle = iowait =
446                 irq = softirq = steal = cputime64_zero;
447         jif = - wall_to_monotonic.tv_sec;
448         if (wall_to_monotonic.tv_nsec)
449                 --jif;
450
451         for_each_possible_cpu(i) {
452                 int j;
453
454                 user = cputime64_add(user, kstat_cpu(i).cpustat.user);
455                 nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
456                 system = cputime64_add(system, kstat_cpu(i).cpustat.system);
457                 idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
458                 iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
459                 irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
460                 softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
461                 steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
462                 for (j = 0 ; j < NR_IRQS ; j++)
463                         sum += kstat_cpu(i).irqs[j];
464         }
465
466         seq_printf(p, "cpu  %llu %llu %llu %llu %llu %llu %llu %llu\n",
467                 (unsigned long long)cputime64_to_clock_t(user),
468                 (unsigned long long)cputime64_to_clock_t(nice),
469                 (unsigned long long)cputime64_to_clock_t(system),
470                 (unsigned long long)cputime64_to_clock_t(idle),
471                 (unsigned long long)cputime64_to_clock_t(iowait),
472                 (unsigned long long)cputime64_to_clock_t(irq),
473                 (unsigned long long)cputime64_to_clock_t(softirq),
474                 (unsigned long long)cputime64_to_clock_t(steal));
475         for_each_online_cpu(i) {
476
477                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
478                 user = kstat_cpu(i).cpustat.user;
479                 nice = kstat_cpu(i).cpustat.nice;
480                 system = kstat_cpu(i).cpustat.system;
481                 idle = kstat_cpu(i).cpustat.idle;
482                 iowait = kstat_cpu(i).cpustat.iowait;
483                 irq = kstat_cpu(i).cpustat.irq;
484                 softirq = kstat_cpu(i).cpustat.softirq;
485                 steal = kstat_cpu(i).cpustat.steal;
486                 seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
487                         i,
488                         (unsigned long long)cputime64_to_clock_t(user),
489                         (unsigned long long)cputime64_to_clock_t(nice),
490                         (unsigned long long)cputime64_to_clock_t(system),
491                         (unsigned long long)cputime64_to_clock_t(idle),
492                         (unsigned long long)cputime64_to_clock_t(iowait),
493                         (unsigned long long)cputime64_to_clock_t(irq),
494                         (unsigned long long)cputime64_to_clock_t(softirq),
495                         (unsigned long long)cputime64_to_clock_t(steal));
496         }
497         seq_printf(p, "intr %llu", (unsigned long long)sum);
498
499 #if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64)
500         for (i = 0; i < NR_IRQS; i++)
501                 seq_printf(p, " %u", kstat_irqs(i));
502 #endif
503
504         seq_printf(p,
505                 "\nctxt %llu\n"
506                 "btime %lu\n"
507                 "processes %lu\n"
508                 "procs_running %lu\n"
509                 "procs_blocked %lu\n",
510                 nr_context_switches(),
511                 (unsigned long)jif,
512                 total_forks,
513                 nr_running(),
514                 nr_iowait());
515
516         return 0;
517 }
518
519 static int stat_open(struct inode *inode, struct file *file)
520 {
521         unsigned size = 4096 * (1 + num_possible_cpus() / 32);
522         char *buf;
523         struct seq_file *m;
524         int res;
525
526         /* don't ask for more than the kmalloc() max size, currently 128 KB */
527         if (size > 128 * 1024)
528                 size = 128 * 1024;
529         buf = kmalloc(size, GFP_KERNEL);
530         if (!buf)
531                 return -ENOMEM;
532
533         res = single_open(file, show_stat, NULL);
534         if (!res) {
535                 m = file->private_data;
536                 m->buf = buf;
537                 m->size = size;
538         } else
539                 kfree(buf);
540         return res;
541 }
542 static struct file_operations proc_stat_operations = {
543         .open           = stat_open,
544         .read           = seq_read,
545         .llseek         = seq_lseek,
546         .release        = single_release,
547 };
548
549 /*
550  * /proc/interrupts
551  */
552 static void *int_seq_start(struct seq_file *f, loff_t *pos)
553 {
554         return (*pos <= NR_IRQS) ? pos : NULL;
555 }
556
557 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
558 {
559         (*pos)++;
560         if (*pos > NR_IRQS)
561                 return NULL;
562         return pos;
563 }
564
565 static void int_seq_stop(struct seq_file *f, void *v)
566 {
567         /* Nothing to do */
568 }
569
570
571 extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
572 static struct seq_operations int_seq_ops = {
573         .start = int_seq_start,
574         .next  = int_seq_next,
575         .stop  = int_seq_stop,
576         .show  = show_interrupts
577 };
578
579 static int interrupts_open(struct inode *inode, struct file *filp)
580 {
581         return seq_open(filp, &int_seq_ops);
582 }
583
584 static struct file_operations proc_interrupts_operations = {
585         .open           = interrupts_open,
586         .read           = seq_read,
587         .llseek         = seq_lseek,
588         .release        = seq_release,
589 };
590
591 static int filesystems_read_proc(char *page, char **start, off_t off,
592                                  int count, int *eof, void *data)
593 {
594         int len = get_filesystem_list(page);
595         return proc_calc_metrics(page, start, off, count, eof, len);
596 }
597
598 static int cmdline_read_proc(char *page, char **start, off_t off,
599                                  int count, int *eof, void *data)
600 {
601         int len;
602
603         len = sprintf(page, "%s\n", saved_command_line);
604         return proc_calc_metrics(page, start, off, count, eof, len);
605 }
606
607 static int locks_read_proc(char *page, char **start, off_t off,
608                                  int count, int *eof, void *data)
609 {
610         int len = get_locks_status(page, start, off, count);
611
612         if (len < count)
613                 *eof = 1;
614         return len;
615 }
616
617 static int execdomains_read_proc(char *page, char **start, off_t off,
618                                  int count, int *eof, void *data)
619 {
620         int len = get_exec_domain_list(page);
621         return proc_calc_metrics(page, start, off, count, eof, len);
622 }
623
624 #ifdef CONFIG_MAGIC_SYSRQ
625 /*
626  * writing 'C' to /proc/sysrq-trigger is like sysrq-C
627  */
628 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
629                                    size_t count, loff_t *ppos)
630 {
631         if (count) {
632                 char c;
633
634                 if (get_user(c, buf))
635                         return -EFAULT;
636                 __handle_sysrq(c, NULL, NULL, 0);
637         }
638         return count;
639 }
640
641 static struct file_operations proc_sysrq_trigger_operations = {
642         .write          = write_sysrq_trigger,
643 };
644 #endif
645
646 struct proc_dir_entry *proc_root_kcore;
647
648 void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
649 {
650         struct proc_dir_entry *entry;
651         entry = create_proc_entry(name, mode, NULL);
652         if (entry)
653                 entry->proc_fops = f;
654 }
655
656 void __init proc_misc_init(void)
657 {
658         struct proc_dir_entry *entry;
659         static struct {
660                 char *name;
661                 int (*read_proc)(char*,char**,off_t,int,int*,void*);
662         } *p, simple_ones[] = {
663                 {"loadavg",     loadavg_read_proc},
664                 {"uptime",      uptime_read_proc},
665                 {"meminfo",     meminfo_read_proc},
666                 {"version",     version_read_proc},
667 #ifdef CONFIG_PROC_HARDWARE
668                 {"hardware",    hardware_read_proc},
669 #endif
670 #ifdef CONFIG_STRAM_PROC
671                 {"stram",       stram_read_proc},
672 #endif
673                 {"filesystems", filesystems_read_proc},
674                 {"cmdline",     cmdline_read_proc},
675                 {"locks",       locks_read_proc},
676                 {"execdomains", execdomains_read_proc},
677                 {NULL,}
678         };
679         for (p = simple_ones; p->name; p++)
680                 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
681
682         proc_symlink("mounts", NULL, "self/mounts");
683
684         /* And now for trickier ones */
685         entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
686         if (entry)
687                 entry->proc_fops = &proc_kmsg_operations;
688         create_seq_entry("devices", 0, &proc_devinfo_operations);
689         create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
690         create_seq_entry("partitions", 0, &proc_partitions_operations);
691         create_seq_entry("stat", 0, &proc_stat_operations);
692         create_seq_entry("interrupts", 0, &proc_interrupts_operations);
693 #ifdef CONFIG_SLAB
694         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
695 #ifdef CONFIG_DEBUG_SLAB_LEAK
696         create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
697 #endif
698 #endif
699         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
700         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
701         create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
702         create_seq_entry("diskstats", 0, &proc_diskstats_operations);
703 #ifdef CONFIG_MODULES
704         create_seq_entry("modules", 0, &proc_modules_operations);
705 #endif
706 #ifdef CONFIG_SCHEDSTATS
707         create_seq_entry("schedstat", 0, &proc_schedstat_operations);
708 #endif
709 #ifdef CONFIG_PROC_KCORE
710         proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
711         if (proc_root_kcore) {
712                 proc_root_kcore->proc_fops = &proc_kcore_operations;
713                 proc_root_kcore->size =
714                                 (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
715         }
716 #endif
717 #ifdef CONFIG_PROC_VMCORE
718         proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
719         if (proc_vmcore)
720                 proc_vmcore->proc_fops = &proc_vmcore_operations;
721 #endif
722 #ifdef CONFIG_MAGIC_SYSRQ
723         entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
724         if (entry)
725                 entry->proc_fops = &proc_sysrq_trigger_operations;
726 #endif
727 }