Commit | Line | Data |
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1da177e4 LT |
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> | |
7170be5f | 23 | #include <linux/fs.h> |
1da177e4 LT |
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> | |
666bfddb | 48 | #include <linux/crash_dump.h> |
1da177e4 LT |
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 *); | |
1da177e4 LT |
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; | |
4c4c402d | 130 | long cached; |
1da177e4 LT |
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 | ||
4c4c402d MH |
145 | cached = get_page_cache_size() - total_swapcache_pages - i.bufferram; |
146 | if (cached < 0) | |
147 | cached = 0; | |
148 | ||
1da177e4 LT |
149 | get_vmalloc_info(&vmi); |
150 | ||
151 | /* | |
152 | * Tagged format, for easy grepping and expansion. | |
153 | */ | |
154 | len = sprintf(page, | |
155 | "MemTotal: %8lu kB\n" | |
156 | "MemFree: %8lu kB\n" | |
157 | "Buffers: %8lu kB\n" | |
158 | "Cached: %8lu kB\n" | |
159 | "SwapCached: %8lu kB\n" | |
160 | "Active: %8lu kB\n" | |
161 | "Inactive: %8lu kB\n" | |
162 | "HighTotal: %8lu kB\n" | |
163 | "HighFree: %8lu kB\n" | |
164 | "LowTotal: %8lu kB\n" | |
165 | "LowFree: %8lu kB\n" | |
166 | "SwapTotal: %8lu kB\n" | |
167 | "SwapFree: %8lu kB\n" | |
168 | "Dirty: %8lu kB\n" | |
169 | "Writeback: %8lu kB\n" | |
170 | "Mapped: %8lu kB\n" | |
171 | "Slab: %8lu kB\n" | |
172 | "CommitLimit: %8lu kB\n" | |
173 | "Committed_AS: %8lu kB\n" | |
174 | "PageTables: %8lu kB\n" | |
175 | "VmallocTotal: %8lu kB\n" | |
176 | "VmallocUsed: %8lu kB\n" | |
177 | "VmallocChunk: %8lu kB\n", | |
178 | K(i.totalram), | |
179 | K(i.freeram), | |
180 | K(i.bufferram), | |
4c4c402d | 181 | K(cached), |
1da177e4 LT |
182 | K(total_swapcache_pages), |
183 | K(active), | |
184 | K(inactive), | |
185 | K(i.totalhigh), | |
186 | K(i.freehigh), | |
187 | K(i.totalram-i.totalhigh), | |
188 | K(i.freeram-i.freehigh), | |
189 | K(i.totalswap), | |
190 | K(i.freeswap), | |
191 | K(ps.nr_dirty), | |
192 | K(ps.nr_writeback), | |
193 | K(ps.nr_mapped), | |
194 | K(ps.nr_slab), | |
195 | K(allowed), | |
196 | K(committed), | |
197 | K(ps.nr_page_table_pages), | |
198 | (unsigned long)VMALLOC_TOTAL >> 10, | |
199 | vmi.used >> 10, | |
200 | vmi.largest_chunk >> 10 | |
201 | ); | |
202 | ||
203 | len += hugetlb_report_meminfo(page + len); | |
204 | ||
205 | return proc_calc_metrics(page, start, off, count, eof, len); | |
206 | #undef K | |
207 | } | |
208 | ||
209 | extern struct seq_operations fragmentation_op; | |
210 | static int fragmentation_open(struct inode *inode, struct file *file) | |
211 | { | |
212 | (void)inode; | |
213 | return seq_open(file, &fragmentation_op); | |
214 | } | |
215 | ||
216 | static struct file_operations fragmentation_file_operations = { | |
217 | .open = fragmentation_open, | |
218 | .read = seq_read, | |
219 | .llseek = seq_lseek, | |
220 | .release = seq_release, | |
221 | }; | |
222 | ||
295ab934 ND |
223 | extern struct seq_operations zoneinfo_op; |
224 | static int zoneinfo_open(struct inode *inode, struct file *file) | |
225 | { | |
226 | return seq_open(file, &zoneinfo_op); | |
227 | } | |
228 | ||
229 | static struct file_operations proc_zoneinfo_file_operations = { | |
230 | .open = zoneinfo_open, | |
231 | .read = seq_read, | |
232 | .llseek = seq_lseek, | |
233 | .release = seq_release, | |
234 | }; | |
235 | ||
1da177e4 LT |
236 | static int version_read_proc(char *page, char **start, off_t off, |
237 | int count, int *eof, void *data) | |
238 | { | |
239 | int len; | |
240 | ||
241 | strcpy(page, linux_banner); | |
242 | len = strlen(page); | |
243 | return proc_calc_metrics(page, start, off, count, eof, len); | |
244 | } | |
245 | ||
246 | extern struct seq_operations cpuinfo_op; | |
247 | static int cpuinfo_open(struct inode *inode, struct file *file) | |
248 | { | |
249 | return seq_open(file, &cpuinfo_op); | |
250 | } | |
7170be5f NH |
251 | |
252 | enum devinfo_states { | |
253 | CHR_HDR, | |
254 | CHR_LIST, | |
255 | BLK_HDR, | |
256 | BLK_LIST, | |
257 | DEVINFO_DONE | |
258 | }; | |
259 | ||
260 | struct devinfo_state { | |
261 | void *chrdev; | |
262 | void *blkdev; | |
263 | unsigned int num_records; | |
264 | unsigned int cur_record; | |
265 | enum devinfo_states state; | |
266 | }; | |
267 | ||
268 | static void *devinfo_start(struct seq_file *f, loff_t *pos) | |
269 | { | |
270 | struct devinfo_state *info = f->private; | |
271 | ||
272 | if (*pos) { | |
273 | if ((info) && (*pos <= info->num_records)) | |
274 | return info; | |
275 | return NULL; | |
276 | } | |
277 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
278 | f->private = info; | |
279 | info->chrdev = acquire_chrdev_list(); | |
280 | info->blkdev = acquire_blkdev_list(); | |
281 | info->state = CHR_HDR; | |
282 | info->num_records = count_chrdev_list(); | |
283 | info->num_records += count_blkdev_list(); | |
284 | info->num_records += 2; /* Character and Block headers */ | |
285 | *pos = 1; | |
286 | info->cur_record = *pos; | |
287 | return info; | |
288 | } | |
289 | ||
290 | static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos) | |
291 | { | |
292 | int idummy; | |
293 | char *ndummy; | |
294 | struct devinfo_state *info = f->private; | |
295 | ||
296 | switch (info->state) { | |
297 | case CHR_HDR: | |
298 | info->state = CHR_LIST; | |
299 | (*pos)++; | |
300 | /*fallthrough*/ | |
301 | case CHR_LIST: | |
302 | if (get_chrdev_info(info->chrdev,&idummy,&ndummy)) { | |
303 | /* | |
304 | * The character dev list is complete | |
305 | */ | |
306 | info->state = BLK_HDR; | |
307 | } else { | |
308 | info->chrdev = get_next_chrdev(info->chrdev); | |
309 | } | |
310 | (*pos)++; | |
311 | break; | |
312 | case BLK_HDR: | |
313 | info->state = BLK_LIST; | |
314 | (*pos)++; | |
5be0e951 | 315 | /*fallthrough*/ |
7170be5f NH |
316 | case BLK_LIST: |
317 | if (get_blkdev_info(info->blkdev,&idummy,&ndummy)) { | |
318 | /* | |
319 | * The block dev list is complete | |
320 | */ | |
321 | info->state = DEVINFO_DONE; | |
322 | } else { | |
323 | info->blkdev = get_next_blkdev(info->blkdev); | |
324 | } | |
325 | (*pos)++; | |
326 | break; | |
327 | case DEVINFO_DONE: | |
328 | (*pos)++; | |
329 | info->cur_record = *pos; | |
330 | info = NULL; | |
331 | break; | |
332 | default: | |
333 | break; | |
334 | } | |
335 | if (info) | |
336 | info->cur_record = *pos; | |
337 | return info; | |
338 | } | |
339 | ||
340 | static void devinfo_stop(struct seq_file *f, void *v) | |
341 | { | |
342 | struct devinfo_state *info = f->private; | |
343 | ||
344 | if (info) { | |
345 | release_chrdev_list(info->chrdev); | |
346 | release_blkdev_list(info->blkdev); | |
347 | f->private = NULL; | |
348 | kfree(info); | |
349 | } | |
350 | } | |
351 | ||
352 | static int devinfo_show(struct seq_file *f, void *arg) | |
353 | { | |
354 | int major; | |
355 | char *name; | |
356 | struct devinfo_state *info = f->private; | |
357 | ||
358 | switch(info->state) { | |
359 | case CHR_HDR: | |
360 | seq_printf(f,"Character devices:\n"); | |
361 | /* fallthrough */ | |
362 | case CHR_LIST: | |
363 | if (!get_chrdev_info(info->chrdev,&major,&name)) | |
364 | seq_printf(f,"%3d %s\n",major,name); | |
365 | break; | |
366 | case BLK_HDR: | |
367 | seq_printf(f,"\nBlock devices:\n"); | |
368 | /* fallthrough */ | |
369 | case BLK_LIST: | |
370 | if (!get_blkdev_info(info->blkdev,&major,&name)) | |
371 | seq_printf(f,"%3d %s\n",major,name); | |
372 | break; | |
373 | default: | |
374 | break; | |
375 | } | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | static struct seq_operations devinfo_op = { | |
381 | .start = devinfo_start, | |
382 | .next = devinfo_next, | |
383 | .stop = devinfo_stop, | |
384 | .show = devinfo_show, | |
385 | }; | |
386 | ||
387 | static int devinfo_open(struct inode *inode, struct file *file) | |
388 | { | |
389 | return seq_open(file, &devinfo_op); | |
390 | } | |
391 | ||
392 | static struct file_operations proc_devinfo_operations = { | |
393 | .open = devinfo_open, | |
394 | .read = seq_read, | |
395 | .llseek = seq_lseek, | |
396 | .release = seq_release, | |
397 | }; | |
398 | ||
1da177e4 LT |
399 | static struct file_operations proc_cpuinfo_operations = { |
400 | .open = cpuinfo_open, | |
401 | .read = seq_read, | |
402 | .llseek = seq_lseek, | |
403 | .release = seq_release, | |
404 | }; | |
405 | ||
406 | extern struct seq_operations vmstat_op; | |
407 | static int vmstat_open(struct inode *inode, struct file *file) | |
408 | { | |
409 | return seq_open(file, &vmstat_op); | |
410 | } | |
411 | static struct file_operations proc_vmstat_file_operations = { | |
412 | .open = vmstat_open, | |
413 | .read = seq_read, | |
414 | .llseek = seq_lseek, | |
415 | .release = seq_release, | |
416 | }; | |
417 | ||
418 | #ifdef CONFIG_PROC_HARDWARE | |
419 | static int hardware_read_proc(char *page, char **start, off_t off, | |
420 | int count, int *eof, void *data) | |
421 | { | |
422 | int len = get_hardware_list(page); | |
423 | return proc_calc_metrics(page, start, off, count, eof, len); | |
424 | } | |
425 | #endif | |
426 | ||
427 | #ifdef CONFIG_STRAM_PROC | |
428 | static int stram_read_proc(char *page, char **start, off_t off, | |
429 | int count, int *eof, void *data) | |
430 | { | |
431 | int len = get_stram_list(page); | |
432 | return proc_calc_metrics(page, start, off, count, eof, len); | |
433 | } | |
434 | #endif | |
435 | ||
436 | extern struct seq_operations partitions_op; | |
437 | static int partitions_open(struct inode *inode, struct file *file) | |
438 | { | |
439 | return seq_open(file, &partitions_op); | |
440 | } | |
441 | static struct file_operations proc_partitions_operations = { | |
442 | .open = partitions_open, | |
443 | .read = seq_read, | |
444 | .llseek = seq_lseek, | |
445 | .release = seq_release, | |
446 | }; | |
447 | ||
448 | extern struct seq_operations diskstats_op; | |
449 | static int diskstats_open(struct inode *inode, struct file *file) | |
450 | { | |
451 | return seq_open(file, &diskstats_op); | |
452 | } | |
453 | static struct file_operations proc_diskstats_operations = { | |
454 | .open = diskstats_open, | |
455 | .read = seq_read, | |
456 | .llseek = seq_lseek, | |
457 | .release = seq_release, | |
458 | }; | |
459 | ||
460 | #ifdef CONFIG_MODULES | |
461 | extern struct seq_operations modules_op; | |
462 | static int modules_open(struct inode *inode, struct file *file) | |
463 | { | |
464 | return seq_open(file, &modules_op); | |
465 | } | |
466 | static struct file_operations proc_modules_operations = { | |
467 | .open = modules_open, | |
468 | .read = seq_read, | |
469 | .llseek = seq_lseek, | |
470 | .release = seq_release, | |
471 | }; | |
472 | #endif | |
473 | ||
10cef602 | 474 | #ifdef CONFIG_SLAB |
1da177e4 LT |
475 | extern struct seq_operations slabinfo_op; |
476 | extern ssize_t slabinfo_write(struct file *, const char __user *, size_t, loff_t *); | |
477 | static int slabinfo_open(struct inode *inode, struct file *file) | |
478 | { | |
479 | return seq_open(file, &slabinfo_op); | |
480 | } | |
481 | static struct file_operations proc_slabinfo_operations = { | |
482 | .open = slabinfo_open, | |
483 | .read = seq_read, | |
484 | .write = slabinfo_write, | |
485 | .llseek = seq_lseek, | |
486 | .release = seq_release, | |
487 | }; | |
871751e2 AV |
488 | |
489 | #ifdef CONFIG_DEBUG_SLAB_LEAK | |
490 | extern struct seq_operations slabstats_op; | |
491 | static int slabstats_open(struct inode *inode, struct file *file) | |
492 | { | |
493 | unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL); | |
494 | int ret = -ENOMEM; | |
495 | if (n) { | |
496 | ret = seq_open(file, &slabstats_op); | |
497 | if (!ret) { | |
498 | struct seq_file *m = file->private_data; | |
499 | *n = PAGE_SIZE / (2 * sizeof(unsigned long)); | |
500 | m->private = n; | |
501 | n = NULL; | |
502 | } | |
503 | kfree(n); | |
504 | } | |
505 | return ret; | |
506 | } | |
507 | ||
508 | static int slabstats_release(struct inode *inode, struct file *file) | |
509 | { | |
510 | struct seq_file *m = file->private_data; | |
511 | kfree(m->private); | |
512 | return seq_release(inode, file); | |
513 | } | |
514 | ||
515 | static struct file_operations proc_slabstats_operations = { | |
516 | .open = slabstats_open, | |
517 | .read = seq_read, | |
518 | .llseek = seq_lseek, | |
519 | .release = slabstats_release, | |
520 | }; | |
521 | #endif | |
10cef602 | 522 | #endif |
1da177e4 LT |
523 | |
524 | static int show_stat(struct seq_file *p, void *v) | |
525 | { | |
526 | int i; | |
527 | unsigned long jif; | |
528 | cputime64_t user, nice, system, idle, iowait, irq, softirq, steal; | |
529 | u64 sum = 0; | |
530 | ||
531 | user = nice = system = idle = iowait = | |
532 | irq = softirq = steal = cputime64_zero; | |
533 | jif = - wall_to_monotonic.tv_sec; | |
534 | if (wall_to_monotonic.tv_nsec) | |
535 | --jif; | |
536 | ||
0a945022 | 537 | for_each_possible_cpu(i) { |
1da177e4 LT |
538 | int j; |
539 | ||
540 | user = cputime64_add(user, kstat_cpu(i).cpustat.user); | |
541 | nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice); | |
542 | system = cputime64_add(system, kstat_cpu(i).cpustat.system); | |
543 | idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle); | |
544 | iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait); | |
545 | irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq); | |
546 | softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq); | |
547 | steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal); | |
548 | for (j = 0 ; j < NR_IRQS ; j++) | |
549 | sum += kstat_cpu(i).irqs[j]; | |
550 | } | |
551 | ||
552 | seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu\n", | |
553 | (unsigned long long)cputime64_to_clock_t(user), | |
554 | (unsigned long long)cputime64_to_clock_t(nice), | |
555 | (unsigned long long)cputime64_to_clock_t(system), | |
556 | (unsigned long long)cputime64_to_clock_t(idle), | |
557 | (unsigned long long)cputime64_to_clock_t(iowait), | |
558 | (unsigned long long)cputime64_to_clock_t(irq), | |
559 | (unsigned long long)cputime64_to_clock_t(softirq), | |
560 | (unsigned long long)cputime64_to_clock_t(steal)); | |
561 | for_each_online_cpu(i) { | |
562 | ||
563 | /* Copy values here to work around gcc-2.95.3, gcc-2.96 */ | |
564 | user = kstat_cpu(i).cpustat.user; | |
565 | nice = kstat_cpu(i).cpustat.nice; | |
566 | system = kstat_cpu(i).cpustat.system; | |
567 | idle = kstat_cpu(i).cpustat.idle; | |
568 | iowait = kstat_cpu(i).cpustat.iowait; | |
569 | irq = kstat_cpu(i).cpustat.irq; | |
570 | softirq = kstat_cpu(i).cpustat.softirq; | |
571 | steal = kstat_cpu(i).cpustat.steal; | |
572 | seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n", | |
573 | i, | |
574 | (unsigned long long)cputime64_to_clock_t(user), | |
575 | (unsigned long long)cputime64_to_clock_t(nice), | |
576 | (unsigned long long)cputime64_to_clock_t(system), | |
577 | (unsigned long long)cputime64_to_clock_t(idle), | |
578 | (unsigned long long)cputime64_to_clock_t(iowait), | |
579 | (unsigned long long)cputime64_to_clock_t(irq), | |
580 | (unsigned long long)cputime64_to_clock_t(softirq), | |
581 | (unsigned long long)cputime64_to_clock_t(steal)); | |
582 | } | |
583 | seq_printf(p, "intr %llu", (unsigned long long)sum); | |
584 | ||
a1854611 | 585 | #if !defined(CONFIG_PPC64) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64) |
1da177e4 LT |
586 | for (i = 0; i < NR_IRQS; i++) |
587 | seq_printf(p, " %u", kstat_irqs(i)); | |
588 | #endif | |
589 | ||
590 | seq_printf(p, | |
591 | "\nctxt %llu\n" | |
592 | "btime %lu\n" | |
593 | "processes %lu\n" | |
594 | "procs_running %lu\n" | |
595 | "procs_blocked %lu\n", | |
596 | nr_context_switches(), | |
597 | (unsigned long)jif, | |
598 | total_forks, | |
599 | nr_running(), | |
600 | nr_iowait()); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
605 | static int stat_open(struct inode *inode, struct file *file) | |
606 | { | |
607 | unsigned size = 4096 * (1 + num_possible_cpus() / 32); | |
608 | char *buf; | |
609 | struct seq_file *m; | |
610 | int res; | |
611 | ||
612 | /* don't ask for more than the kmalloc() max size, currently 128 KB */ | |
613 | if (size > 128 * 1024) | |
614 | size = 128 * 1024; | |
615 | buf = kmalloc(size, GFP_KERNEL); | |
616 | if (!buf) | |
617 | return -ENOMEM; | |
618 | ||
619 | res = single_open(file, show_stat, NULL); | |
620 | if (!res) { | |
621 | m = file->private_data; | |
622 | m->buf = buf; | |
623 | m->size = size; | |
624 | } else | |
625 | kfree(buf); | |
626 | return res; | |
627 | } | |
628 | static struct file_operations proc_stat_operations = { | |
629 | .open = stat_open, | |
630 | .read = seq_read, | |
631 | .llseek = seq_lseek, | |
632 | .release = single_release, | |
633 | }; | |
634 | ||
1da177e4 LT |
635 | /* |
636 | * /proc/interrupts | |
637 | */ | |
638 | static void *int_seq_start(struct seq_file *f, loff_t *pos) | |
639 | { | |
640 | return (*pos <= NR_IRQS) ? pos : NULL; | |
641 | } | |
642 | ||
643 | static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos) | |
644 | { | |
645 | (*pos)++; | |
646 | if (*pos > NR_IRQS) | |
647 | return NULL; | |
648 | return pos; | |
649 | } | |
650 | ||
651 | static void int_seq_stop(struct seq_file *f, void *v) | |
652 | { | |
653 | /* Nothing to do */ | |
654 | } | |
655 | ||
656 | ||
657 | extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */ | |
658 | static struct seq_operations int_seq_ops = { | |
659 | .start = int_seq_start, | |
660 | .next = int_seq_next, | |
661 | .stop = int_seq_stop, | |
662 | .show = show_interrupts | |
663 | }; | |
664 | ||
665 | static int interrupts_open(struct inode *inode, struct file *filp) | |
666 | { | |
667 | return seq_open(filp, &int_seq_ops); | |
668 | } | |
669 | ||
670 | static struct file_operations proc_interrupts_operations = { | |
671 | .open = interrupts_open, | |
672 | .read = seq_read, | |
673 | .llseek = seq_lseek, | |
674 | .release = seq_release, | |
675 | }; | |
676 | ||
677 | static int filesystems_read_proc(char *page, char **start, off_t off, | |
678 | int count, int *eof, void *data) | |
679 | { | |
680 | int len = get_filesystem_list(page); | |
681 | return proc_calc_metrics(page, start, off, count, eof, len); | |
682 | } | |
683 | ||
684 | static int cmdline_read_proc(char *page, char **start, off_t off, | |
685 | int count, int *eof, void *data) | |
686 | { | |
687 | int len; | |
688 | ||
689 | len = sprintf(page, "%s\n", saved_command_line); | |
690 | return proc_calc_metrics(page, start, off, count, eof, len); | |
691 | } | |
692 | ||
693 | static int locks_read_proc(char *page, char **start, off_t off, | |
694 | int count, int *eof, void *data) | |
695 | { | |
696 | int len = get_locks_status(page, start, off, count); | |
697 | ||
698 | if (len < count) | |
699 | *eof = 1; | |
700 | return len; | |
701 | } | |
702 | ||
703 | static int execdomains_read_proc(char *page, char **start, off_t off, | |
704 | int count, int *eof, void *data) | |
705 | { | |
706 | int len = get_exec_domain_list(page); | |
707 | return proc_calc_metrics(page, start, off, count, eof, len); | |
708 | } | |
709 | ||
710 | #ifdef CONFIG_MAGIC_SYSRQ | |
711 | /* | |
712 | * writing 'C' to /proc/sysrq-trigger is like sysrq-C | |
713 | */ | |
714 | static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf, | |
715 | size_t count, loff_t *ppos) | |
716 | { | |
717 | if (count) { | |
718 | char c; | |
719 | ||
720 | if (get_user(c, buf)) | |
721 | return -EFAULT; | |
722 | __handle_sysrq(c, NULL, NULL, 0); | |
723 | } | |
724 | return count; | |
725 | } | |
726 | ||
727 | static struct file_operations proc_sysrq_trigger_operations = { | |
728 | .write = write_sysrq_trigger, | |
729 | }; | |
730 | #endif | |
731 | ||
732 | struct proc_dir_entry *proc_root_kcore; | |
733 | ||
99ac48f5 | 734 | void create_seq_entry(char *name, mode_t mode, const struct file_operations *f) |
1da177e4 LT |
735 | { |
736 | struct proc_dir_entry *entry; | |
737 | entry = create_proc_entry(name, mode, NULL); | |
738 | if (entry) | |
739 | entry->proc_fops = f; | |
740 | } | |
741 | ||
742 | void __init proc_misc_init(void) | |
743 | { | |
744 | struct proc_dir_entry *entry; | |
745 | static struct { | |
746 | char *name; | |
747 | int (*read_proc)(char*,char**,off_t,int,int*,void*); | |
748 | } *p, simple_ones[] = { | |
749 | {"loadavg", loadavg_read_proc}, | |
750 | {"uptime", uptime_read_proc}, | |
751 | {"meminfo", meminfo_read_proc}, | |
752 | {"version", version_read_proc}, | |
753 | #ifdef CONFIG_PROC_HARDWARE | |
754 | {"hardware", hardware_read_proc}, | |
755 | #endif | |
756 | #ifdef CONFIG_STRAM_PROC | |
757 | {"stram", stram_read_proc}, | |
758 | #endif | |
1da177e4 LT |
759 | {"filesystems", filesystems_read_proc}, |
760 | {"cmdline", cmdline_read_proc}, | |
761 | {"locks", locks_read_proc}, | |
762 | {"execdomains", execdomains_read_proc}, | |
763 | {NULL,} | |
764 | }; | |
765 | for (p = simple_ones; p->name; p++) | |
766 | create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL); | |
767 | ||
768 | proc_symlink("mounts", NULL, "self/mounts"); | |
769 | ||
770 | /* And now for trickier ones */ | |
771 | entry = create_proc_entry("kmsg", S_IRUSR, &proc_root); | |
772 | if (entry) | |
773 | entry->proc_fops = &proc_kmsg_operations; | |
7170be5f | 774 | create_seq_entry("devices", 0, &proc_devinfo_operations); |
1da177e4 LT |
775 | create_seq_entry("cpuinfo", 0, &proc_cpuinfo_operations); |
776 | create_seq_entry("partitions", 0, &proc_partitions_operations); | |
777 | create_seq_entry("stat", 0, &proc_stat_operations); | |
778 | create_seq_entry("interrupts", 0, &proc_interrupts_operations); | |
10cef602 | 779 | #ifdef CONFIG_SLAB |
1da177e4 | 780 | create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations); |
871751e2 AV |
781 | #ifdef CONFIG_DEBUG_SLAB_LEAK |
782 | create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations); | |
783 | #endif | |
10cef602 | 784 | #endif |
1da177e4 LT |
785 | create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations); |
786 | create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations); | |
295ab934 | 787 | create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations); |
1da177e4 LT |
788 | create_seq_entry("diskstats", 0, &proc_diskstats_operations); |
789 | #ifdef CONFIG_MODULES | |
790 | create_seq_entry("modules", 0, &proc_modules_operations); | |
791 | #endif | |
792 | #ifdef CONFIG_SCHEDSTATS | |
793 | create_seq_entry("schedstat", 0, &proc_schedstat_operations); | |
794 | #endif | |
795 | #ifdef CONFIG_PROC_KCORE | |
796 | proc_root_kcore = create_proc_entry("kcore", S_IRUSR, NULL); | |
797 | if (proc_root_kcore) { | |
798 | proc_root_kcore->proc_fops = &proc_kcore_operations; | |
799 | proc_root_kcore->size = | |
800 | (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE; | |
801 | } | |
802 | #endif | |
666bfddb VG |
803 | #ifdef CONFIG_PROC_VMCORE |
804 | proc_vmcore = create_proc_entry("vmcore", S_IRUSR, NULL); | |
805 | if (proc_vmcore) | |
806 | proc_vmcore->proc_fops = &proc_vmcore_operations; | |
807 | #endif | |
1da177e4 LT |
808 | #ifdef CONFIG_MAGIC_SYSRQ |
809 | entry = create_proc_entry("sysrq-trigger", S_IWUSR, NULL); | |
810 | if (entry) | |
811 | entry->proc_fops = &proc_sysrq_trigger_operations; | |
812 | #endif | |
1da177e4 | 813 | } |