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Avoid too many remote cpu references due to /proc/stat
[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/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/seq_file.h>
39 #include <linux/times.h>
40 #include <linux/profile.h>
41 #include <linux/utsname.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 <linux/pid_namespace.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, current->nsproxy->pid_ns->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 monotonic_to_bootbased(&uptime);
109 cputime_to_timespec(idletime, &idle);
110 len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
111 (unsigned long) uptime.tv_sec,
112 (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
113 (unsigned long) idle.tv_sec,
114 (idle.tv_nsec / (NSEC_PER_SEC / 100)));
115
116 return proc_calc_metrics(page, start, off, count, eof, len);
117 }
118
119 static int meminfo_read_proc(char *page, char **start, off_t off,
120 int count, int *eof, void *data)
121 {
122 struct sysinfo i;
123 int len;
124 unsigned long committed;
125 unsigned long allowed;
126 struct vmalloc_info vmi;
127 long cached;
128
129 /*
130 * display in kilobytes.
131 */
132 #define K(x) ((x) << (PAGE_SHIFT - 10))
133 si_meminfo(&i);
134 si_swapinfo(&i);
135 committed = atomic_read(&vm_committed_space);
136 allowed = ((totalram_pages - hugetlb_total_pages())
137 * sysctl_overcommit_ratio / 100) + total_swap_pages;
138
139 cached = global_page_state(NR_FILE_PAGES) -
140 total_swapcache_pages - i.bufferram;
141 if (cached < 0)
142 cached = 0;
143
144 get_vmalloc_info(&vmi);
145
146 /*
147 * Tagged format, for easy grepping and expansion.
148 */
149 len = sprintf(page,
150 "MemTotal: %8lu kB\n"
151 "MemFree: %8lu kB\n"
152 "Buffers: %8lu kB\n"
153 "Cached: %8lu kB\n"
154 "SwapCached: %8lu kB\n"
155 "Active: %8lu kB\n"
156 "Inactive: %8lu kB\n"
157 #ifdef CONFIG_HIGHMEM
158 "HighTotal: %8lu kB\n"
159 "HighFree: %8lu kB\n"
160 "LowTotal: %8lu kB\n"
161 "LowFree: %8lu kB\n"
162 #endif
163 "SwapTotal: %8lu kB\n"
164 "SwapFree: %8lu kB\n"
165 "Dirty: %8lu kB\n"
166 "Writeback: %8lu kB\n"
167 "AnonPages: %8lu kB\n"
168 "Mapped: %8lu kB\n"
169 "Slab: %8lu kB\n"
170 "SReclaimable: %8lu kB\n"
171 "SUnreclaim: %8lu kB\n"
172 "PageTables: %8lu kB\n"
173 "NFS_Unstable: %8lu kB\n"
174 "Bounce: %8lu kB\n"
175 "CommitLimit: %8lu kB\n"
176 "Committed_AS: %8lu kB\n"
177 "VmallocTotal: %8lu kB\n"
178 "VmallocUsed: %8lu kB\n"
179 "VmallocChunk: %8lu kB\n",
180 K(i.totalram),
181 K(i.freeram),
182 K(i.bufferram),
183 K(cached),
184 K(total_swapcache_pages),
185 K(global_page_state(NR_ACTIVE)),
186 K(global_page_state(NR_INACTIVE)),
187 #ifdef CONFIG_HIGHMEM
188 K(i.totalhigh),
189 K(i.freehigh),
190 K(i.totalram-i.totalhigh),
191 K(i.freeram-i.freehigh),
192 #endif
193 K(i.totalswap),
194 K(i.freeswap),
195 K(global_page_state(NR_FILE_DIRTY)),
196 K(global_page_state(NR_WRITEBACK)),
197 K(global_page_state(NR_ANON_PAGES)),
198 K(global_page_state(NR_FILE_MAPPED)),
199 K(global_page_state(NR_SLAB_RECLAIMABLE) +
200 global_page_state(NR_SLAB_UNRECLAIMABLE)),
201 K(global_page_state(NR_SLAB_RECLAIMABLE)),
202 K(global_page_state(NR_SLAB_UNRECLAIMABLE)),
203 K(global_page_state(NR_PAGETABLE)),
204 K(global_page_state(NR_UNSTABLE_NFS)),
205 K(global_page_state(NR_BOUNCE)),
206 K(allowed),
207 K(committed),
208 (unsigned long)VMALLOC_TOTAL >> 10,
209 vmi.used >> 10,
210 vmi.largest_chunk >> 10
211 );
212
213 len += hugetlb_report_meminfo(page + len);
214
215 return proc_calc_metrics(page, start, off, count, eof, len);
216 #undef K
217 }
218
219 extern struct seq_operations fragmentation_op;
220 static int fragmentation_open(struct inode *inode, struct file *file)
221 {
222 (void)inode;
223 return seq_open(file, &fragmentation_op);
224 }
225
226 static const struct file_operations fragmentation_file_operations = {
227 .open = fragmentation_open,
228 .read = seq_read,
229 .llseek = seq_lseek,
230 .release = seq_release,
231 };
232
233 extern struct seq_operations zoneinfo_op;
234 static int zoneinfo_open(struct inode *inode, struct file *file)
235 {
236 return seq_open(file, &zoneinfo_op);
237 }
238
239 static const struct file_operations proc_zoneinfo_file_operations = {
240 .open = zoneinfo_open,
241 .read = seq_read,
242 .llseek = seq_lseek,
243 .release = seq_release,
244 };
245
246 static int version_read_proc(char *page, char **start, off_t off,
247 int count, int *eof, void *data)
248 {
249 int len;
250
251 len = snprintf(page, PAGE_SIZE, linux_proc_banner,
252 utsname()->sysname,
253 utsname()->release,
254 utsname()->version);
255 return proc_calc_metrics(page, start, off, count, eof, len);
256 }
257
258 extern struct seq_operations cpuinfo_op;
259 static int cpuinfo_open(struct inode *inode, struct file *file)
260 {
261 return seq_open(file, &cpuinfo_op);
262 }
263
264 static const struct file_operations proc_cpuinfo_operations = {
265 .open = cpuinfo_open,
266 .read = seq_read,
267 .llseek = seq_lseek,
268 .release = seq_release,
269 };
270
271 static int devinfo_show(struct seq_file *f, void *v)
272 {
273 int i = *(loff_t *) v;
274
275 if (i < CHRDEV_MAJOR_HASH_SIZE) {
276 if (i == 0)
277 seq_printf(f, "Character devices:\n");
278 chrdev_show(f, i);
279 }
280 #ifdef CONFIG_BLOCK
281 else {
282 i -= CHRDEV_MAJOR_HASH_SIZE;
283 if (i == 0)
284 seq_printf(f, "\nBlock devices:\n");
285 blkdev_show(f, i);
286 }
287 #endif
288 return 0;
289 }
290
291 static void *devinfo_start(struct seq_file *f, loff_t *pos)
292 {
293 if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
294 return pos;
295 return NULL;
296 }
297
298 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
299 {
300 (*pos)++;
301 if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
302 return NULL;
303 return pos;
304 }
305
306 static void devinfo_stop(struct seq_file *f, void *v)
307 {
308 /* Nothing to do */
309 }
310
311 static struct seq_operations devinfo_ops = {
312 .start = devinfo_start,
313 .next = devinfo_next,
314 .stop = devinfo_stop,
315 .show = devinfo_show
316 };
317
318 static int devinfo_open(struct inode *inode, struct file *filp)
319 {
320 return seq_open(filp, &devinfo_ops);
321 }
322
323 static const struct file_operations proc_devinfo_operations = {
324 .open = devinfo_open,
325 .read = seq_read,
326 .llseek = seq_lseek,
327 .release = seq_release,
328 };
329
330 extern struct seq_operations vmstat_op;
331 static int vmstat_open(struct inode *inode, struct file *file)
332 {
333 return seq_open(file, &vmstat_op);
334 }
335 static const struct file_operations proc_vmstat_file_operations = {
336 .open = vmstat_open,
337 .read = seq_read,
338 .llseek = seq_lseek,
339 .release = seq_release,
340 };
341
342 #ifdef CONFIG_PROC_HARDWARE
343 static int hardware_read_proc(char *page, char **start, off_t off,
344 int count, int *eof, void *data)
345 {
346 int len = get_hardware_list(page);
347 return proc_calc_metrics(page, start, off, count, eof, len);
348 }
349 #endif
350
351 #ifdef CONFIG_STRAM_PROC
352 static int stram_read_proc(char *page, char **start, off_t off,
353 int count, int *eof, void *data)
354 {
355 int len = get_stram_list(page);
356 return proc_calc_metrics(page, start, off, count, eof, len);
357 }
358 #endif
359
360 #ifdef CONFIG_BLOCK
361 extern struct seq_operations partitions_op;
362 static int partitions_open(struct inode *inode, struct file *file)
363 {
364 return seq_open(file, &partitions_op);
365 }
366 static const struct file_operations proc_partitions_operations = {
367 .open = partitions_open,
368 .read = seq_read,
369 .llseek = seq_lseek,
370 .release = seq_release,
371 };
372
373 extern struct seq_operations diskstats_op;
374 static int diskstats_open(struct inode *inode, struct file *file)
375 {
376 return seq_open(file, &diskstats_op);
377 }
378 static const struct file_operations proc_diskstats_operations = {
379 .open = diskstats_open,
380 .read = seq_read,
381 .llseek = seq_lseek,
382 .release = seq_release,
383 };
384 #endif
385
386 #ifdef CONFIG_MODULES
387 extern struct seq_operations modules_op;
388 static int modules_open(struct inode *inode, struct file *file)
389 {
390 return seq_open(file, &modules_op);
391 }
392 static const struct file_operations proc_modules_operations = {
393 .open = modules_open,
394 .read = seq_read,
395 .llseek = seq_lseek,
396 .release = seq_release,
397 };
398 #endif
399
400 #ifdef CONFIG_SLAB
401 static int slabinfo_open(struct inode *inode, struct file *file)
402 {
403 return seq_open(file, &slabinfo_op);
404 }
405 static const struct file_operations proc_slabinfo_operations = {
406 .open = slabinfo_open,
407 .read = seq_read,
408 .write = slabinfo_write,
409 .llseek = seq_lseek,
410 .release = seq_release,
411 };
412
413 #ifdef CONFIG_DEBUG_SLAB_LEAK
414 extern struct seq_operations slabstats_op;
415 static int slabstats_open(struct inode *inode, struct file *file)
416 {
417 unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
418 int ret = -ENOMEM;
419 if (n) {
420 ret = seq_open(file, &slabstats_op);
421 if (!ret) {
422 struct seq_file *m = file->private_data;
423 *n = PAGE_SIZE / (2 * sizeof(unsigned long));
424 m->private = n;
425 n = NULL;
426 }
427 kfree(n);
428 }
429 return ret;
430 }
431
432 static const struct file_operations proc_slabstats_operations = {
433 .open = slabstats_open,
434 .read = seq_read,
435 .llseek = seq_lseek,
436 .release = seq_release_private,
437 };
438 #endif
439 #endif
440
441 static int show_stat(struct seq_file *p, void *v)
442 {
443 int i;
444 unsigned long jif;
445 cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
446 u64 sum = 0;
447 struct timespec boottime;
448 unsigned int *per_irq_sum;
449
450 per_irq_sum = kzalloc(sizeof(unsigned int)*NR_IRQS, GFP_KERNEL);
451 if (!per_irq_sum)
452 return -ENOMEM;
453
454 user = nice = system = idle = iowait =
455 irq = softirq = steal = cputime64_zero;
456 getboottime(&boottime);
457 jif = boottime.tv_sec;
458
459 for_each_possible_cpu(i) {
460 int j;
461
462 user = cputime64_add(user, kstat_cpu(i).cpustat.user);
463 nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
464 system = cputime64_add(system, kstat_cpu(i).cpustat.system);
465 idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
466 iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
467 irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
468 softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
469 steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
470 for (j = 0; j < NR_IRQS; j++) {
471 unsigned int temp = kstat_cpu(i).irqs[j];
472 sum += temp;
473 per_irq_sum[j] += temp;
474 }
475 }
476
477 seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu\n",
478 (unsigned long long)cputime64_to_clock_t(user),
479 (unsigned long long)cputime64_to_clock_t(nice),
480 (unsigned long long)cputime64_to_clock_t(system),
481 (unsigned long long)cputime64_to_clock_t(idle),
482 (unsigned long long)cputime64_to_clock_t(iowait),
483 (unsigned long long)cputime64_to_clock_t(irq),
484 (unsigned long long)cputime64_to_clock_t(softirq),
485 (unsigned long long)cputime64_to_clock_t(steal));
486 for_each_online_cpu(i) {
487
488 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
489 user = kstat_cpu(i).cpustat.user;
490 nice = kstat_cpu(i).cpustat.nice;
491 system = kstat_cpu(i).cpustat.system;
492 idle = kstat_cpu(i).cpustat.idle;
493 iowait = kstat_cpu(i).cpustat.iowait;
494 irq = kstat_cpu(i).cpustat.irq;
495 softirq = kstat_cpu(i).cpustat.softirq;
496 steal = kstat_cpu(i).cpustat.steal;
497 seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
498 i,
499 (unsigned long long)cputime64_to_clock_t(user),
500 (unsigned long long)cputime64_to_clock_t(nice),
501 (unsigned long long)cputime64_to_clock_t(system),
502 (unsigned long long)cputime64_to_clock_t(idle),
503 (unsigned long long)cputime64_to_clock_t(iowait),
504 (unsigned long long)cputime64_to_clock_t(irq),
505 (unsigned long long)cputime64_to_clock_t(softirq),
506 (unsigned long long)cputime64_to_clock_t(steal));
507 }
508 seq_printf(p, "intr %llu", (unsigned long long)sum);
509
510 #if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64)
511 for (i = 0; i < NR_IRQS; i++)
512 seq_printf(p, " %u", per_irq_sum[i]);
513 #endif
514
515 seq_printf(p,
516 "\nctxt %llu\n"
517 "btime %lu\n"
518 "processes %lu\n"
519 "procs_running %lu\n"
520 "procs_blocked %lu\n",
521 nr_context_switches(),
522 (unsigned long)jif,
523 total_forks,
524 nr_running(),
525 nr_iowait());
526
527 kfree(per_irq_sum);
528 return 0;
529 }
530
531 static int stat_open(struct inode *inode, struct file *file)
532 {
533 unsigned size = 4096 * (1 + num_possible_cpus() / 32);
534 char *buf;
535 struct seq_file *m;
536 int res;
537
538 /* don't ask for more than the kmalloc() max size, currently 128 KB */
539 if (size > 128 * 1024)
540 size = 128 * 1024;
541 buf = kmalloc(size, GFP_KERNEL);
542 if (!buf)
543 return -ENOMEM;
544
545 res = single_open(file, show_stat, NULL);
546 if (!res) {
547 m = file->private_data;
548 m->buf = buf;
549 m->size = size;
550 } else
551 kfree(buf);
552 return res;
553 }
554 static const struct file_operations proc_stat_operations = {
555 .open = stat_open,
556 .read = seq_read,
557 .llseek = seq_lseek,
558 .release = single_release,
559 };
560
561 /*
562 * /proc/interrupts
563 */
564 static void *int_seq_start(struct seq_file *f, loff_t *pos)
565 {
566 return (*pos <= NR_IRQS) ? pos : NULL;
567 }
568
569 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
570 {
571 (*pos)++;
572 if (*pos > NR_IRQS)
573 return NULL;
574 return pos;
575 }
576
577 static void int_seq_stop(struct seq_file *f, void *v)
578 {
579 /* Nothing to do */
580 }
581
582
583 extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
584 static struct seq_operations int_seq_ops = {
585 .start = int_seq_start,
586 .next = int_seq_next,
587 .stop = int_seq_stop,
588 .show = show_interrupts
589 };
590
591 static int interrupts_open(struct inode *inode, struct file *filp)
592 {
593 return seq_open(filp, &int_seq_ops);
594 }
595
596 static const struct file_operations proc_interrupts_operations = {
597 .open = interrupts_open,
598 .read = seq_read,
599 .llseek = seq_lseek,
600 .release = seq_release,
601 };
602
603 static int filesystems_read_proc(char *page, char **start, off_t off,
604 int count, int *eof, void *data)
605 {
606 int len = get_filesystem_list(page);
607 return proc_calc_metrics(page, start, off, count, eof, len);
608 }
609
610 static int cmdline_read_proc(char *page, char **start, off_t off,
611 int count, int *eof, void *data)
612 {
613 int len;
614
615 len = sprintf(page, "%s\n", saved_command_line);
616 return proc_calc_metrics(page, start, off, count, eof, len);
617 }
618
619 static int locks_read_proc(char *page, char **start, off_t off,
620 int count, int *eof, void *data)
621 {
622 int len = get_locks_status(page, start, off, count);
623
624 if (len < count)
625 *eof = 1;
626 return len;
627 }
628
629 static int execdomains_read_proc(char *page, char **start, off_t off,
630 int count, int *eof, void *data)
631 {
632 int len = get_exec_domain_list(page);
633 return proc_calc_metrics(page, start, off, count, eof, len);
634 }
635
636 #ifdef CONFIG_MAGIC_SYSRQ
637 /*
638 * writing 'C' to /proc/sysrq-trigger is like sysrq-C
639 */
640 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
641 size_t count, loff_t *ppos)
642 {
643 if (count) {
644 char c;
645
646 if (get_user(c, buf))
647 return -EFAULT;
648 __handle_sysrq(c, NULL, 0);
649 }
650 return count;
651 }
652
653 static const struct file_operations proc_sysrq_trigger_operations = {
654 .write = write_sysrq_trigger,
655 };
656 #endif
657
658 struct proc_dir_entry *proc_root_kcore;
659
660 void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
661 {
662 struct proc_dir_entry *entry;
663 entry = create_proc_entry(name, mode, NULL);
664 if (entry)
665 entry->proc_fops = f;
666 }
667
668 void __init proc_misc_init(void)
669 {
670 static struct {
671 char *name;
672 int (*read_proc)(char*,char**,off_t,int,int*,void*);
673 } *p, simple_ones[] = {
674 {"loadavg", loadavg_read_proc},
675 {"uptime", uptime_read_proc},
676 {"meminfo", meminfo_read_proc},
677 {"version", version_read_proc},
678 #ifdef CONFIG_PROC_HARDWARE
679 {"hardware", hardware_read_proc},
680 #endif
681 #ifdef CONFIG_STRAM_PROC
682 {"stram", stram_read_proc},
683 #endif
684 {"filesystems", filesystems_read_proc},
685 {"cmdline", cmdline_read_proc},
686 {"locks", locks_read_proc},
687 {"execdomains", execdomains_read_proc},
688 {NULL,}
689 };
690 for (p = simple_ones; p->name; p++)
691 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
692
693 proc_symlink("mounts", NULL, "self/mounts");
694
695 /* And now for trickier ones */
696 #ifdef CONFIG_PRINTK
697 {
698 struct proc_dir_entry *entry;
699 entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
700 if (entry)
701 entry->proc_fops = &proc_kmsg_operations;
702 }
703 #endif
704 create_seq_entry("devices", 0, &proc_devinfo_operations);
705 create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
706 #ifdef CONFIG_BLOCK
707 create_seq_entry("partitions", 0, &proc_partitions_operations);
708 #endif
709 create_seq_entry("stat", 0, &proc_stat_operations);
710 create_seq_entry("interrupts", 0, &proc_interrupts_operations);
711 #ifdef CONFIG_SLAB
712 create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
713 #ifdef CONFIG_DEBUG_SLAB_LEAK
714 create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
715 #endif
716 #endif
717 create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
718 create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
719 create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
720 #ifdef CONFIG_BLOCK
721 create_seq_entry("diskstats", 0, &proc_diskstats_operations);
722 #endif
723 #ifdef CONFIG_MODULES
724 create_seq_entry("modules", 0, &proc_modules_operations);
725 #endif
726 #ifdef CONFIG_SCHEDSTATS
727 create_seq_entry("schedstat", 0, &proc_schedstat_operations);
728 #endif
729 #ifdef CONFIG_PROC_KCORE
730 proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
731 if (proc_root_kcore) {
732 proc_root_kcore->proc_fops = &proc_kcore_operations;
733 proc_root_kcore->size =
734 (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
735 }
736 #endif
737 #ifdef CONFIG_PROC_VMCORE
738 proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
739 if (proc_vmcore)
740 proc_vmcore->proc_fops = &proc_vmcore_operations;
741 #endif
742 #ifdef CONFIG_MAGIC_SYSRQ
743 {
744 struct proc_dir_entry *entry;
745 entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
746 if (entry)
747 entry->proc_fops = &proc_sysrq_trigger_operations;
748 }
749 #endif
750 }
Linux kernel - Deliverables
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