Rework /proc/locks via seq_files and seq_list helpers
[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, current->nsproxy->pid_ns->last_pid);
95         return proc_calc_metrics(page, start, off, count, eof, len);
96 }
97
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);
105
106         do_posix_clock_monotonic_gettime(&uptime);
107         monotonic_to_bootbased(&uptime);
108         cputime_to_timespec(idletime, &idle);
109         len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
110                         (unsigned long) uptime.tv_sec,
111                         (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
112                         (unsigned long) idle.tv_sec,
113                         (idle.tv_nsec / (NSEC_PER_SEC / 100)));
114
115         return proc_calc_metrics(page, start, off, count, eof, len);
116 }
117
118 static int meminfo_read_proc(char *page, char **start, off_t off,
119                                  int count, int *eof, void *data)
120 {
121         struct sysinfo i;
122         int len;
123         unsigned long committed;
124         unsigned long allowed;
125         struct vmalloc_info vmi;
126         long cached;
127
128 /*
129  * display in kilobytes.
130  */
131 #define K(x) ((x) << (PAGE_SHIFT - 10))
132         si_meminfo(&i);
133         si_swapinfo(&i);
134         committed = atomic_read(&vm_committed_space);
135         allowed = ((totalram_pages - hugetlb_total_pages())
136                 * sysctl_overcommit_ratio / 100) + total_swap_pages;
137
138         cached = global_page_state(NR_FILE_PAGES) -
139                         total_swapcache_pages - i.bufferram;
140         if (cached < 0)
141                 cached = 0;
142
143         get_vmalloc_info(&vmi);
144
145         /*
146          * Tagged format, for easy grepping and expansion.
147          */
148         len = sprintf(page,
149                 "MemTotal:     %8lu kB\n"
150                 "MemFree:      %8lu kB\n"
151                 "Buffers:      %8lu kB\n"
152                 "Cached:       %8lu kB\n"
153                 "SwapCached:   %8lu kB\n"
154                 "Active:       %8lu kB\n"
155                 "Inactive:     %8lu kB\n"
156 #ifdef CONFIG_HIGHMEM
157                 "HighTotal:    %8lu kB\n"
158                 "HighFree:     %8lu kB\n"
159                 "LowTotal:     %8lu kB\n"
160                 "LowFree:      %8lu kB\n"
161 #endif
162                 "SwapTotal:    %8lu kB\n"
163                 "SwapFree:     %8lu kB\n"
164                 "Dirty:        %8lu kB\n"
165                 "Writeback:    %8lu kB\n"
166                 "AnonPages:    %8lu kB\n"
167                 "Mapped:       %8lu kB\n"
168                 "Slab:         %8lu kB\n"
169                 "SReclaimable: %8lu kB\n"
170                 "SUnreclaim:   %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(global_page_state(NR_ACTIVE)),
185                 K(global_page_state(NR_INACTIVE)),
186 #ifdef CONFIG_HIGHMEM
187                 K(i.totalhigh),
188                 K(i.freehigh),
189                 K(i.totalram-i.totalhigh),
190                 K(i.freeram-i.freehigh),
191 #endif
192                 K(i.totalswap),
193                 K(i.freeswap),
194                 K(global_page_state(NR_FILE_DIRTY)),
195                 K(global_page_state(NR_WRITEBACK)),
196                 K(global_page_state(NR_ANON_PAGES)),
197                 K(global_page_state(NR_FILE_MAPPED)),
198                 K(global_page_state(NR_SLAB_RECLAIMABLE) +
199                                 global_page_state(NR_SLAB_UNRECLAIMABLE)),
200                 K(global_page_state(NR_SLAB_RECLAIMABLE)),
201                 K(global_page_state(NR_SLAB_UNRECLAIMABLE)),
202                 K(global_page_state(NR_PAGETABLE)),
203                 K(global_page_state(NR_UNSTABLE_NFS)),
204                 K(global_page_state(NR_BOUNCE)),
205                 K(allowed),
206                 K(committed),
207                 (unsigned long)VMALLOC_TOTAL >> 10,
208                 vmi.used >> 10,
209                 vmi.largest_chunk >> 10
210                 );
211
212                 len += hugetlb_report_meminfo(page + len);
213
214         return proc_calc_metrics(page, start, off, count, eof, len);
215 #undef K
216 }
217
218 extern struct seq_operations fragmentation_op;
219 static int fragmentation_open(struct inode *inode, struct file *file)
220 {
221         (void)inode;
222         return seq_open(file, &fragmentation_op);
223 }
224
225 static const struct file_operations fragmentation_file_operations = {
226         .open           = fragmentation_open,
227         .read           = seq_read,
228         .llseek         = seq_lseek,
229         .release        = seq_release,
230 };
231
232 extern struct seq_operations zoneinfo_op;
233 static int zoneinfo_open(struct inode *inode, struct file *file)
234 {
235         return seq_open(file, &zoneinfo_op);
236 }
237
238 static const struct file_operations proc_zoneinfo_file_operations = {
239         .open           = zoneinfo_open,
240         .read           = seq_read,
241         .llseek         = seq_lseek,
242         .release        = seq_release,
243 };
244
245 static int version_read_proc(char *page, char **start, off_t off,
246                                  int count, int *eof, void *data)
247 {
248         int len;
249
250         len = snprintf(page, PAGE_SIZE, linux_proc_banner,
251                 utsname()->sysname,
252                 utsname()->release,
253                 utsname()->version);
254         return proc_calc_metrics(page, start, off, count, eof, len);
255 }
256
257 extern struct seq_operations cpuinfo_op;
258 static int cpuinfo_open(struct inode *inode, struct file *file)
259 {
260         return seq_open(file, &cpuinfo_op);
261 }
262
263 static const struct file_operations proc_cpuinfo_operations = {
264         .open           = cpuinfo_open,
265         .read           = seq_read,
266         .llseek         = seq_lseek,
267         .release        = seq_release,
268 };
269
270 static int devinfo_show(struct seq_file *f, void *v)
271 {
272         int i = *(loff_t *) v;
273
274         if (i < CHRDEV_MAJOR_HASH_SIZE) {
275                 if (i == 0)
276                         seq_printf(f, "Character devices:\n");
277                 chrdev_show(f, i);
278         }
279 #ifdef CONFIG_BLOCK
280         else {
281                 i -= CHRDEV_MAJOR_HASH_SIZE;
282                 if (i == 0)
283                         seq_printf(f, "\nBlock devices:\n");
284                 blkdev_show(f, i);
285         }
286 #endif
287         return 0;
288 }
289
290 static void *devinfo_start(struct seq_file *f, loff_t *pos)
291 {
292         if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
293                 return pos;
294         return NULL;
295 }
296
297 static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
298 {
299         (*pos)++;
300         if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
301                 return NULL;
302         return pos;
303 }
304
305 static void devinfo_stop(struct seq_file *f, void *v)
306 {
307         /* Nothing to do */
308 }
309
310 static struct seq_operations devinfo_ops = {
311         .start = devinfo_start,
312         .next  = devinfo_next,
313         .stop  = devinfo_stop,
314         .show  = devinfo_show
315 };
316
317 static int devinfo_open(struct inode *inode, struct file *filp)
318 {
319         return seq_open(filp, &devinfo_ops);
320 }
321
322 static const struct file_operations proc_devinfo_operations = {
323         .open           = devinfo_open,
324         .read           = seq_read,
325         .llseek         = seq_lseek,
326         .release        = seq_release,
327 };
328
329 extern struct seq_operations vmstat_op;
330 static int vmstat_open(struct inode *inode, struct file *file)
331 {
332         return seq_open(file, &vmstat_op);
333 }
334 static const struct file_operations proc_vmstat_file_operations = {
335         .open           = vmstat_open,
336         .read           = seq_read,
337         .llseek         = seq_lseek,
338         .release        = seq_release,
339 };
340
341 #ifdef CONFIG_PROC_HARDWARE
342 static int hardware_read_proc(char *page, char **start, off_t off,
343                                  int count, int *eof, void *data)
344 {
345         int len = get_hardware_list(page);
346         return proc_calc_metrics(page, start, off, count, eof, len);
347 }
348 #endif
349
350 #ifdef CONFIG_STRAM_PROC
351 static int stram_read_proc(char *page, char **start, off_t off,
352                                  int count, int *eof, void *data)
353 {
354         int len = get_stram_list(page);
355         return proc_calc_metrics(page, start, off, count, eof, len);
356 }
357 #endif
358
359 #ifdef CONFIG_BLOCK
360 extern struct seq_operations partitions_op;
361 static int partitions_open(struct inode *inode, struct file *file)
362 {
363         return seq_open(file, &partitions_op);
364 }
365 static const struct file_operations proc_partitions_operations = {
366         .open           = partitions_open,
367         .read           = seq_read,
368         .llseek         = seq_lseek,
369         .release        = seq_release,
370 };
371
372 extern struct seq_operations diskstats_op;
373 static int diskstats_open(struct inode *inode, struct file *file)
374 {
375         return seq_open(file, &diskstats_op);
376 }
377 static const struct file_operations proc_diskstats_operations = {
378         .open           = diskstats_open,
379         .read           = seq_read,
380         .llseek         = seq_lseek,
381         .release        = seq_release,
382 };
383 #endif
384
385 #ifdef CONFIG_MODULES
386 extern struct seq_operations modules_op;
387 static int modules_open(struct inode *inode, struct file *file)
388 {
389         return seq_open(file, &modules_op);
390 }
391 static const struct file_operations proc_modules_operations = {
392         .open           = modules_open,
393         .read           = seq_read,
394         .llseek         = seq_lseek,
395         .release        = seq_release,
396 };
397 #endif
398
399 #ifdef CONFIG_SLAB
400 static int slabinfo_open(struct inode *inode, struct file *file)
401 {
402         return seq_open(file, &slabinfo_op);
403 }
404 static const struct file_operations proc_slabinfo_operations = {
405         .open           = slabinfo_open,
406         .read           = seq_read,
407         .write          = slabinfo_write,
408         .llseek         = seq_lseek,
409         .release        = seq_release,
410 };
411
412 #ifdef CONFIG_DEBUG_SLAB_LEAK
413 extern struct seq_operations slabstats_op;
414 static int slabstats_open(struct inode *inode, struct file *file)
415 {
416         unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
417         int ret = -ENOMEM;
418         if (n) {
419                 ret = seq_open(file, &slabstats_op);
420                 if (!ret) {
421                         struct seq_file *m = file->private_data;
422                         *n = PAGE_SIZE / (2 * sizeof(unsigned long));
423                         m->private = n;
424                         n = NULL;
425                 }
426                 kfree(n);
427         }
428         return ret;
429 }
430
431 static const struct file_operations proc_slabstats_operations = {
432         .open           = slabstats_open,
433         .read           = seq_read,
434         .llseek         = seq_lseek,
435         .release        = seq_release_private,
436 };
437 #endif
438 #endif
439
440 static int show_stat(struct seq_file *p, void *v)
441 {
442         int i;
443         unsigned long jif;
444         cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
445         u64 sum = 0;
446         struct timespec boottime;
447         unsigned int *per_irq_sum;
448
449         per_irq_sum = kzalloc(sizeof(unsigned int)*NR_IRQS, GFP_KERNEL);
450         if (!per_irq_sum)
451                 return -ENOMEM;
452
453         user = nice = system = idle = iowait =
454                 irq = softirq = steal = cputime64_zero;
455         getboottime(&boottime);
456         jif = boottime.tv_sec;
457
458         for_each_possible_cpu(i) {
459                 int j;
460
461                 user = cputime64_add(user, kstat_cpu(i).cpustat.user);
462                 nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice);
463                 system = cputime64_add(system, kstat_cpu(i).cpustat.system);
464                 idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle);
465                 iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait);
466                 irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
467                 softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
468                 steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
469                 for (j = 0; j < NR_IRQS; j++) {
470                         unsigned int temp = kstat_cpu(i).irqs[j];
471                         sum += temp;
472                         per_irq_sum[j] += temp;
473                 }
474         }
475
476         seq_printf(p, "cpu  %llu %llu %llu %llu %llu %llu %llu %llu\n",
477                 (unsigned long long)cputime64_to_clock_t(user),
478                 (unsigned long long)cputime64_to_clock_t(nice),
479                 (unsigned long long)cputime64_to_clock_t(system),
480                 (unsigned long long)cputime64_to_clock_t(idle),
481                 (unsigned long long)cputime64_to_clock_t(iowait),
482                 (unsigned long long)cputime64_to_clock_t(irq),
483                 (unsigned long long)cputime64_to_clock_t(softirq),
484                 (unsigned long long)cputime64_to_clock_t(steal));
485         for_each_online_cpu(i) {
486
487                 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
488                 user = kstat_cpu(i).cpustat.user;
489                 nice = kstat_cpu(i).cpustat.nice;
490                 system = kstat_cpu(i).cpustat.system;
491                 idle = kstat_cpu(i).cpustat.idle;
492                 iowait = kstat_cpu(i).cpustat.iowait;
493                 irq = kstat_cpu(i).cpustat.irq;
494                 softirq = kstat_cpu(i).cpustat.softirq;
495                 steal = kstat_cpu(i).cpustat.steal;
496                 seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
497                         i,
498                         (unsigned long long)cputime64_to_clock_t(user),
499                         (unsigned long long)cputime64_to_clock_t(nice),
500                         (unsigned long long)cputime64_to_clock_t(system),
501                         (unsigned long long)cputime64_to_clock_t(idle),
502                         (unsigned long long)cputime64_to_clock_t(iowait),
503                         (unsigned long long)cputime64_to_clock_t(irq),
504                         (unsigned long long)cputime64_to_clock_t(softirq),
505                         (unsigned long long)cputime64_to_clock_t(steal));
506         }
507         seq_printf(p, "intr %llu", (unsigned long long)sum);
508
509 #ifndef CONFIG_SMP
510         /* Touches too many cache lines on SMP setups */
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_open(struct inode *inode, struct file *filp)
620 {
621         return seq_open(filp, &locks_seq_operations);
622 }
623
624 static const struct file_operations proc_locks_operations = {
625         .open           = locks_open,
626         .read           = seq_read,
627         .llseek         = seq_lseek,
628         .release        = seq_release,
629 };
630
631 static int execdomains_read_proc(char *page, char **start, off_t off,
632                                  int count, int *eof, void *data)
633 {
634         int len = get_exec_domain_list(page);
635         return proc_calc_metrics(page, start, off, count, eof, len);
636 }
637
638 #ifdef CONFIG_MAGIC_SYSRQ
639 /*
640  * writing 'C' to /proc/sysrq-trigger is like sysrq-C
641  */
642 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
643                                    size_t count, loff_t *ppos)
644 {
645         if (count) {
646                 char c;
647
648                 if (get_user(c, buf))
649                         return -EFAULT;
650                 __handle_sysrq(c, NULL, 0);
651         }
652         return count;
653 }
654
655 static const struct file_operations proc_sysrq_trigger_operations = {
656         .write          = write_sysrq_trigger,
657 };
658 #endif
659
660 struct proc_dir_entry *proc_root_kcore;
661
662 void create_seq_entry(char *name, mode_t mode, const struct file_operations *f)
663 {
664         struct proc_dir_entry *entry;
665         entry = create_proc_entry(name, mode, NULL);
666         if (entry)
667                 entry->proc_fops = f;
668 }
669
670 void __init proc_misc_init(void)
671 {
672         static struct {
673                 char *name;
674                 int (*read_proc)(char*,char**,off_t,int,int*,void*);
675         } *p, simple_ones[] = {
676                 {"loadavg",     loadavg_read_proc},
677                 {"uptime",      uptime_read_proc},
678                 {"meminfo",     meminfo_read_proc},
679                 {"version",     version_read_proc},
680 #ifdef CONFIG_PROC_HARDWARE
681                 {"hardware",    hardware_read_proc},
682 #endif
683 #ifdef CONFIG_STRAM_PROC
684                 {"stram",       stram_read_proc},
685 #endif
686                 {"filesystems", filesystems_read_proc},
687                 {"cmdline",     cmdline_read_proc},
688                 {"execdomains", execdomains_read_proc},
689                 {NULL,}
690         };
691         for (p = simple_ones; p->name; p++)
692                 create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL);
693
694         proc_symlink("mounts", NULL, "self/mounts");
695
696         /* And now for trickier ones */
697 #ifdef CONFIG_PRINTK
698         {
699                 struct proc_dir_entry *entry;
700                 entry = create_proc_entry("kmsg", S_IRUSR, &proc_root);
701                 if (entry)
702                         entry->proc_fops = &proc_kmsg_operations;
703         }
704 #endif
705         create_seq_entry("locks", 0, &proc_locks_operations);
706         create_seq_entry("devices", 0, &proc_devinfo_operations);
707         create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations);
708 #ifdef CONFIG_BLOCK
709         create_seq_entry("partitions", 0, &proc_partitions_operations);
710 #endif
711         create_seq_entry("stat", 0, &proc_stat_operations);
712         create_seq_entry("interrupts", 0, &proc_interrupts_operations);
713 #ifdef CONFIG_SLAB
714         create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
715 #ifdef CONFIG_DEBUG_SLAB_LEAK
716         create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
717 #endif
718 #endif
719         create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
720         create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
721         create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
722 #ifdef CONFIG_BLOCK
723         create_seq_entry("diskstats", 0, &proc_diskstats_operations);
724 #endif
725 #ifdef CONFIG_MODULES
726         create_seq_entry("modules", 0, &proc_modules_operations);
727 #endif
728 #ifdef CONFIG_SCHEDSTATS
729         create_seq_entry("schedstat", 0, &proc_schedstat_operations);
730 #endif
731 #ifdef CONFIG_PROC_KCORE
732         proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL);
733         if (proc_root_kcore) {
734                 proc_root_kcore->proc_fops = &proc_kcore_operations;
735                 proc_root_kcore->size =
736                                 (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
737         }
738 #endif
739 #ifdef CONFIG_PROC_VMCORE
740         proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL);
741         if (proc_vmcore)
742                 proc_vmcore->proc_fops = &proc_vmcore_operations;
743 #endif
744 #ifdef CONFIG_MAGIC_SYSRQ
745         {
746                 struct proc_dir_entry *entry;
747                 entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL);
748                 if (entry)
749                         entry->proc_fops = &proc_sysrq_trigger_operations;
750         }
751 #endif
752 }