slub: register slabinfo to procfs
[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/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
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,
95                 task_active_pid_ns(current)->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 pagetypeinfo_op;
234 static int pagetypeinfo_open(struct inode *inode, struct file *file)
235 {
236         return seq_open(file, &pagetypeinfo_op);
237 }
238
239 static const struct file_operations pagetypeinfo_file_ops = {
240         .open           = pagetypeinfo_open,
241         .read           = seq_read,
242         .llseek         = seq_lseek,
243         .release        = seq_release,
244 };
245
246 extern struct seq_operations zoneinfo_op;
247 static int zoneinfo_open(struct inode *inode, struct file *file)
248 {
249         return seq_open(file, &zoneinfo_op);
250 }
251
252 static const struct file_operations proc_zoneinfo_file_operations = {
253         .open           = zoneinfo_open,
254         .read           = seq_read,
255         .llseek         = seq_lseek,
256         .release        = seq_release,
257 };
258
259 static int version_read_proc(char *page, char **start, off_t off,
260                                  int count, int *eof, void *data)
261 {
262         int len;
263
264         len = snprintf(page, PAGE_SIZE, linux_proc_banner,
265                 utsname()->sysname,
266                 utsname()->release,
267                 utsname()->version);
268         return proc_calc_metrics(page, start, off, count, eof, len);
269 }
270
271 extern struct seq_operations cpuinfo_op;
272 static int cpuinfo_open(struct inode *inode, struct file *file)
273 {
274         return seq_open(file, &cpuinfo_op);
275 }
276
277 static const struct file_operations proc_cpuinfo_operations = {
278         .open           = cpuinfo_open,
279         .read           = seq_read,
280         .llseek         = seq_lseek,
281         .release        = seq_release,
282 };
283
284 static int devinfo_show(struct seq_file *f, void *v)
285 {
286         int i = *(loff_t *) v;
287
288         if (i < CHRDEV_MAJOR_HASH_SIZE) {
289                 if (i == 0)
290                         seq_printf(f, "Character devices:\n");
291                 chrdev_show(f, i);
292         }
293 #ifdef CONFIG_BLOCK
294         else {
295                 i -= CHRDEV_MAJOR_HASH_SIZE;
296                 if (i == 0)
297                         seq_printf(f, "\nBlock devices:\n");
298                 blkdev_show(f, i);
299         }
300 #endif
301         return 0;
302 }
303
304 static void *devinfo_start(struct seq_file *f, loff_t *pos)
305 {
306         if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
307                 return pos;
308         return NULL;
309 }
310
311 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
312 {
313         (*pos)++;
314         if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
315                 return NULL;
316         return pos;
317 }
318
319 static void devinfo_stop(struct seq_file *f, void *v)
320 {
321         /* Nothing to do */
322 }
323
324 static struct seq_operations devinfo_ops = {
325         .start = devinfo_start,
326         .next  = devinfo_next,
327         .stop  = devinfo_stop,
328         .show  = devinfo_show
329 };
330
331 static int devinfo_open(struct inode *inode, struct file *filp)
332 {
333         return seq_open(filp, &devinfo_ops);
334 }
335
336 static const struct file_operations proc_devinfo_operations = {
337         .open           = devinfo_open,
338         .read           = seq_read,
339         .llseek         = seq_lseek,
340         .release        = seq_release,
341 };
342
343 extern struct seq_operations vmstat_op;
344 static int vmstat_open(struct inode *inode, struct file *file)
345 {
346         return seq_open(file, &vmstat_op);
347 }
348 static const struct file_operations proc_vmstat_file_operations = {
349         .open           = vmstat_open,
350         .read           = seq_read,
351         .llseek         = seq_lseek,
352         .release        = seq_release,
353 };
354
355 #ifdef CONFIG_PROC_HARDWARE
356 static int hardware_read_proc(char *page, char **start, off_t off,
357                                  int count, int *eof, void *data)
358 {
359         int len = get_hardware_list(page);
360         return proc_calc_metrics(page, start, off, count, eof, len);
361 }
362 #endif
363
364 #ifdef CONFIG_STRAM_PROC
365 static int stram_read_proc(char *page, char **start, off_t off,
366                                  int count, int *eof, void *data)
367 {
368         int len = get_stram_list(page);
369         return proc_calc_metrics(page, start, off, count, eof, len);
370 }
371 #endif
372
373 #ifdef CONFIG_BLOCK
374 extern struct seq_operations partitions_op;
375 static int partitions_open(struct inode *inode, struct file *file)
376 {
377         return seq_open(file, &partitions_op);
378 }
379 static const struct file_operations proc_partitions_operations = {
380         .open           = partitions_open,
381         .read           = seq_read,
382         .llseek         = seq_lseek,
383         .release        = seq_release,
384 };
385
386 extern struct seq_operations diskstats_op;
387 static int diskstats_open(struct inode *inode, struct file *file)
388 {
389         return seq_open(file, &diskstats_op);
390 }
391 static const struct file_operations proc_diskstats_operations = {
392         .open           = diskstats_open,
393         .read           = seq_read,
394         .llseek         = seq_lseek,
395         .release        = seq_release,
396 };
397 #endif
398
399 #ifdef CONFIG_MODULES
400 extern struct seq_operations modules_op;
401 static int modules_open(struct inode *inode, struct file *file)
402 {
403         return seq_open(file, &modules_op);
404 }
405 static const struct file_operations proc_modules_operations = {
406         .open           = modules_open,
407         .read           = seq_read,
408         .llseek         = seq_lseek,
409         .release        = seq_release,
410 };
411 #endif
412
413 #ifdef CONFIG_SLAB
414 static int slabinfo_open(struct inode *inode, struct file *file)
415 {
416         return seq_open(file, &slabinfo_op);
417 }
418 static const struct file_operations proc_slabinfo_operations = {
419         .open           = slabinfo_open,
420         .read           = seq_read,
421         .write          = slabinfo_write,
422         .llseek         = seq_lseek,
423         .release        = seq_release,
424 };
425
426 #ifdef CONFIG_DEBUG_SLAB_LEAK
427 extern struct seq_operations slabstats_op;
428 static int slabstats_open(struct inode *inode, struct file *file)
429 {
430         unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
431         int ret = -ENOMEM;
432         if (n) {
433                 ret = seq_open(file, &slabstats_op);
434                 if (!ret) {
435                         struct seq_file *m = file->private_data;
436                         *n = PAGE_SIZE / (2 * sizeof(unsigned long));
437                         m->private = n;
438                         n = NULL;
439                 }
440                 kfree(n);
441         }
442         return ret;
443 }
444
445 static const struct file_operations proc_slabstats_operations = {
446         .open           = slabstats_open,
447         .read           = seq_read,
448         .llseek         = seq_lseek,
449         .release        = seq_release_private,
450 };
451 #endif
452 #endif
453
454 #ifdef CONFIG_SLUB
455 static int slabinfo_open(struct inode *inode, struct file *file)
456 {
457         return seq_open(file, &slabinfo_op);
458 }
459
460 static const struct file_operations proc_slabinfo_operations = {
461         .open           = slabinfo_open,
462         .read           = seq_read,
463         .llseek         = seq_lseek,
464         .release        = seq_release,
465 };
466 #endif
467
468 static int show_stat(struct seq_file *p, void *v)
469 {
470         int i;
471         unsigned long jif;
472         cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
473         cputime64_t guest;
474         u64 sum = 0;
475         struct timespec boottime;
476         unsigned int *per_irq_sum;
477
478         per_irq_sum = kzalloc(sizeof(unsigned int)*NR_IRQS, GFP_KERNEL);
479         if (!per_irq_sum)
480                 return -ENOMEM;
481
482         user = nice = system = idle = iowait =
483                 irq = softirq = steal = cputime64_zero;
484         guest = cputime64_zero;
485         getboottime(&boottime);
486         jif = boottime.tv_sec;
487
488         for_each_possible_cpu(i) {
489                 int j;
490
491                 user = cputime64_add(user, kstat_cpu(i).cpustat.user);
492                 nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
493                 system = cputime64_add(system, kstat_cpu(i).cpustat.system);
494                 idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
495                 iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
496                 irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
497                 softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
498                 steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
499                 guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
500                 for (j = 0; j < NR_IRQS; j++) {
501                         unsigned int temp = kstat_cpu(i).irqs[j];
502                         sum += temp;
503                         per_irq_sum[j] += temp;
504                 }
505         }
506
507         seq_printf(p, "cpu  %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
508                 (unsigned long long)cputime64_to_clock_t(user),
509                 (unsigned long long)cputime64_to_clock_t(nice),
510                 (unsigned long long)cputime64_to_clock_t(system),
511                 (unsigned long long)cputime64_to_clock_t(idle),
512                 (unsigned long long)cputime64_to_clock_t(iowait),
513                 (unsigned long long)cputime64_to_clock_t(irq),
514                 (unsigned long long)cputime64_to_clock_t(softirq),
515                 (unsigned long long)cputime64_to_clock_t(steal),
516                 (unsigned long long)cputime64_to_clock_t(guest));
517         for_each_online_cpu(i) {
518
519                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
520                 user = kstat_cpu(i).cpustat.user;
521                 nice = kstat_cpu(i).cpustat.nice;
522                 system = kstat_cpu(i).cpustat.system;
523                 idle = kstat_cpu(i).cpustat.idle;
524                 iowait = kstat_cpu(i).cpustat.iowait;
525                 irq = kstat_cpu(i).cpustat.irq;
526                 softirq = kstat_cpu(i).cpustat.softirq;
527                 steal = kstat_cpu(i).cpustat.steal;
528                 guest = kstat_cpu(i).cpustat.guest;
529                 seq_printf(p,
530                         "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
531                         i,
532                         (unsigned long long)cputime64_to_clock_t(user),
533                         (unsigned long long)cputime64_to_clock_t(nice),
534                         (unsigned long long)cputime64_to_clock_t(system),
535                         (unsigned long long)cputime64_to_clock_t(idle),
536                         (unsigned long long)cputime64_to_clock_t(iowait),
537                         (unsigned long long)cputime64_to_clock_t(irq),
538                         (unsigned long long)cputime64_to_clock_t(softirq),
539                         (unsigned long long)cputime64_to_clock_t(steal),
540                         (unsigned long long)cputime64_to_clock_t(guest));
541         }
542         seq_printf(p, "intr %llu", (unsigned long long)sum);
543
544         for (i = 0; i < NR_IRQS; i++)
545                 seq_printf(p, " %u", per_irq_sum[i]);
546
547         seq_printf(p,
548                 "\nctxt %llu\n"
549                 "btime %lu\n"
550                 "processes %lu\n"
551                 "procs_running %lu\n"
552                 "procs_blocked %lu\n",
553                 nr_context_switches(),
554                 (unsigned long)jif,
555                 total_forks,
556                 nr_running(),
557                 nr_iowait());
558
559         kfree(per_irq_sum);
560         return 0;
561 }
562
563 static int stat_open(struct inode *inode, struct file *file)
564 {
565         unsigned size = 4096 * (1 + num_possible_cpus() / 32);
566         char *buf;
567         struct seq_file *m;
568         int res;
569
570         /* don't ask for more than the kmalloc() max size, currently 128 KB */
571         if (size > 128 * 1024)
572                 size = 128 * 1024;
573         buf = kmalloc(size, GFP_KERNEL);
574         if (!buf)
575                 return -ENOMEM;
576
577         res = single_open(file, show_stat, NULL);
578         if (!res) {
579                 m = file->private_data;
580                 m->buf = buf;
581                 m->size = size;
582         } else
583                 kfree(buf);
584         return res;
585 }
586 static const struct file_operations proc_stat_operations = {
587         .open           = stat_open,
588         .read           = seq_read,
589         .llseek         = seq_lseek,
590         .release        = single_release,
591 };
592
593 /*
594  * /proc/interrupts
595  */
596 static void *int_seq_start(struct seq_file *f, loff_t *pos)
597 {
598         return (*pos <= NR_IRQS) ? pos : NULL;
599 }
600
601 static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
602 {
603         (*pos)++;
604         if (*pos > NR_IRQS)
605                 return NULL;
606         return pos;
607 }
608
609 static void int_seq_stop(struct seq_file *f, void *v)
610 {
611         /* Nothing to do */
612 }
613
614
615 extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
616 static struct seq_operations int_seq_ops = {
617         .start = int_seq_start,
618         .next  = int_seq_next,
619         .stop  = int_seq_stop,
620         .show  = show_interrupts
621 };
622
623 static int interrupts_open(struct inode *inode, struct file *filp)
624 {
625         return seq_open(filp, &int_seq_ops);
626 }
627
628 static const struct file_operations proc_interrupts_operations = {
629         .open           = interrupts_open,
630         .read           = seq_read,
631         .llseek         = seq_lseek,
632         .release        = seq_release,
633 };
634
635 static int filesystems_read_proc(char *page, char **start, off_t off,
636                                  int count, int *eof, void *data)
637 {
638         int len = get_filesystem_list(page);
639         return proc_calc_metrics(page, start, off, count, eof, len);
640 }
641
642 static int cmdline_read_proc(char *page, char **start, off_t off,
643                                  int count, int *eof, void *data)
644 {
645         int len;
646
647         len = sprintf(page, "%s\n", saved_command_line);
648         return proc_calc_metrics(page, start, off, count, eof, len);
649 }
650
651 static int locks_open(struct inode *inode, struct file *filp)
652 {
653         return seq_open(filp, &locks_seq_operations);
654 }
655
656 static const struct file_operations proc_locks_operations = {
657         .open           = locks_open,
658         .read           = seq_read,
659         .llseek         = seq_lseek,
660         .release        = seq_release,
661 };
662
663 static int execdomains_read_proc(char *page, char **start, off_t off,
664                                  int count, int *eof, void *data)
665 {
666         int len = get_exec_domain_list(page);
667         return proc_calc_metrics(page, start, off, count, eof, len);
668 }
669
670 #ifdef CONFIG_MAGIC_SYSRQ
671 /*
672  * writing 'C' to /proc/sysrq-trigger is like sysrq-C
673  */
674 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
675                                    size_t count, loff_t *ppos)
676 {
677         if (count) {
678                 char c;
679
680                 if (get_user(c, buf))
681                         return -EFAULT;
682                 __handle_sysrq(c, NULL, 0);
683         }
684         return count;
685 }
686
687 static const struct file_operations proc_sysrq_trigger_operations = {
688         .write          = write_sysrq_trigger,
689 };
690 #endif
691
692 struct proc_dir_entry *proc_root_kcore;
693
694 void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
695 {
696         struct proc_dir_entry *entry;
697         entry = create_proc_entry(name, mode, NULL);
698         if (entry)
699                 entry->proc_fops = f;
700 }
701
702 void __init proc_misc_init(void)
703 {
704         static struct {
705                 char *name;
706                 int (*read_proc)(char*,char**,off_t,int,int*,void*);
707         } *p, simple_ones[] = {
708                 {"loadavg",     loadavg_read_proc},
709                 {"uptime",      uptime_read_proc},
710                 {"meminfo",     meminfo_read_proc},
711                 {"version",     version_read_proc},
712 #ifdef CONFIG_PROC_HARDWARE
713                 {"hardware",    hardware_read_proc},
714 #endif
715 #ifdef CONFIG_STRAM_PROC
716                 {"stram",       stram_read_proc},
717 #endif
718                 {"filesystems", filesystems_read_proc},
719                 {"cmdline",     cmdline_read_proc},
720                 {"execdomains", execdomains_read_proc},
721                 {NULL,}
722         };
723         for (p = simple_ones; p->name; p++)
724                 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
725
726         proc_symlink("mounts", NULL, "self/mounts");
727
728         /* And now for trickier ones */
729 #ifdef CONFIG_PRINTK
730         {
731                 struct proc_dir_entry *entry;
732                 entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
733                 if (entry)
734                         entry->proc_fops = &proc_kmsg_operations;
735         }
736 #endif
737         create_seq_entry("locks", 0, &proc_locks_operations);
738         create_seq_entry("devices", 0, &proc_devinfo_operations);
739         create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
740 #ifdef CONFIG_BLOCK
741         create_seq_entry("partitions", 0, &proc_partitions_operations);
742 #endif
743         create_seq_entry("stat", 0, &proc_stat_operations);
744         create_seq_entry("interrupts", 0, &proc_interrupts_operations);
745 #ifdef CONFIG_SLAB
746         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
747 #ifdef CONFIG_DEBUG_SLAB_LEAK
748         create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
749 #endif
750 #endif
751 #ifdef CONFIG_SLUB
752         create_seq_entry("slabinfo", S_IWUSR|S_IRUGO, &proc_slabinfo_operations);
753 #endif
754         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
755         create_seq_entry("pagetypeinfo", S_IRUGO, &pagetypeinfo_file_ops);
756         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
757         create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
758 #ifdef CONFIG_BLOCK
759         create_seq_entry("diskstats", 0, &proc_diskstats_operations);
760 #endif
761 #ifdef CONFIG_MODULES
762         create_seq_entry("modules", 0, &proc_modules_operations);
763 #endif
764 #ifdef CONFIG_SCHEDSTATS
765         create_seq_entry("schedstat", 0, &proc_schedstat_operations);
766 #endif
767 #ifdef CONFIG_PROC_KCORE
768         proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
769         if (proc_root_kcore) {
770                 proc_root_kcore->proc_fops = &proc_kcore_operations;
771                 proc_root_kcore->size =
772                                 (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
773         }
774 #endif
775 #ifdef CONFIG_PROC_VMCORE
776         proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
777         if (proc_vmcore)
778                 proc_vmcore->proc_fops = &proc_vmcore_operations;
779 #endif
780 #ifdef CONFIG_MAGIC_SYSRQ
781         {
782                 struct proc_dir_entry *entry;
783                 entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
784                 if (entry)
785                         entry->proc_fops = &proc_sysrq_trigger_operations;
786         }
787 #endif
788 }