ia64/linux-2.6.18-xen.hg

view fs/proc/proc_misc.c @ 524:7f8b544237bf

netfront: Allow netfront in domain 0.

This is useful if your physical network device is in a utility domain.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Apr 15 15:18:58 2008 +0100 (2008-04-15)
parents f58a34be59d6
children
line source
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 */
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"
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);
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 }
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;
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 }
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);
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)));
114 return proc_calc_metrics(page, start, off, count, eof, len);
115 }
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;
130 get_zone_counts(&active, &inactive, &free);
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;
142 cached = global_page_state(NR_FILE_PAGES) -
143 total_swapcache_pages - i.bufferram;
144 if (cached < 0)
145 cached = 0;
147 get_vmalloc_info(&vmi);
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 );
207 len += hugetlb_report_meminfo(page + len);
209 return proc_calc_metrics(page, start, off, count, eof, len);
210 #undef K
211 }
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 }
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 };
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 }
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 };
240 static int version_read_proc(char *page, char **start, off_t off,
241 int count, int *eof, void *data)
242 {
243 int len;
245 strcpy(page, linux_banner);
246 len = strlen(page);
247 return proc_calc_metrics(page, start, off, count, eof, len);
248 }
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 }
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 };
263 static int devinfo_show(struct seq_file *f, void *v)
264 {
265 int i = *(loff_t *) v;
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 }
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 }
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 }
295 static void devinfo_stop(struct seq_file *f, void *v)
296 {
297 /* Nothing to do */
298 }
300 static struct seq_operations devinfo_ops = {
301 .start = devinfo_start,
302 .next = devinfo_next,
303 .stop = devinfo_stop,
304 .show = devinfo_show
305 };
307 static int devinfo_open(struct inode *inode, struct file *filp)
308 {
309 return seq_open(filp, &devinfo_ops);
310 }
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 };
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 };
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
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
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 };
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 };
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
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 };
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 }
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 }
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
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;
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;
450 for_each_possible_cpu(i) {
451 int j;
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 }
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_possible_cpu(i) {
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);
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
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());
515 return 0;
516 }
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;
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;
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 };
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 }
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 }
564 static void int_seq_stop(struct seq_file *f, void *v)
565 {
566 /* Nothing to do */
567 }
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 };
578 static int interrupts_open(struct inode *inode, struct file *filp)
579 {
580 return seq_open(filp, &int_seq_ops);
581 }
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 };
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 }
597 static int cmdline_read_proc(char *page, char **start, off_t off,
598 int count, int *eof, void *data)
599 {
600 int len;
602 len = sprintf(page, "%s\n", saved_command_line);
603 return proc_calc_metrics(page, start, off, count, eof, len);
604 }
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);
611 if (len < count)
612 *eof = 1;
613 return len;
614 }
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 }
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;
633 if (get_user(c, buf))
634 return -EFAULT;
635 __handle_sysrq(c, NULL, NULL, 0);
636 }
637 return count;
638 }
640 static struct file_operations proc_sysrq_trigger_operations = {
641 .write = write_sysrq_trigger,
642 };
643 #endif
645 struct proc_dir_entry *proc_root_kcore;
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 }
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);
681 proc_symlink("mounts", NULL, "self/mounts");
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 }