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