Commit | Line | Data |
---|---|---|
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> | |
4b856152 | 27 | #include <linux/quicklist.h> |
1da177e4 LT |
28 | #include <linux/proc_fs.h> |
29 | #include <linux/ioport.h> | |
1da177e4 LT |
30 | #include <linux/mm.h> |
31 | #include <linux/mmzone.h> | |
32 | #include <linux/pagemap.h> | |
f74596d0 | 33 | #include <linux/interrupt.h> |
1da177e4 LT |
34 | #include <linux/swap.h> |
35 | #include <linux/slab.h> | |
a0db701a | 36 | #include <linux/genhd.h> |
1da177e4 LT |
37 | #include <linux/smp.h> |
38 | #include <linux/signal.h> | |
39 | #include <linux/module.h> | |
40 | #include <linux/init.h> | |
1da177e4 LT |
41 | #include <linux/seq_file.h> |
42 | #include <linux/times.h> | |
43 | #include <linux/profile.h> | |
7bf65382 | 44 | #include <linux/utsname.h> |
1da177e4 LT |
45 | #include <linux/blkdev.h> |
46 | #include <linux/hugetlb.h> | |
47 | #include <linux/jiffies.h> | |
48 | #include <linux/sysrq.h> | |
49 | #include <linux/vmalloc.h> | |
666bfddb | 50 | #include <linux/crash_dump.h> |
61a58c6c | 51 | #include <linux/pid_namespace.h> |
161f47bf | 52 | #include <linux/bootmem.h> |
1da177e4 LT |
53 | #include <asm/uaccess.h> |
54 | #include <asm/pgtable.h> | |
55 | #include <asm/io.h> | |
56 | #include <asm/tlb.h> | |
57 | #include <asm/div64.h> | |
58 | #include "internal.h" | |
59 | ||
60 | #define LOAD_INT(x) ((x) >> FSHIFT) | |
61 | #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100) | |
62 | /* | |
63 | * Warning: stuff below (imported functions) assumes that its output will fit | |
64 | * into one page. For some of those functions it may be wrong. Moreover, we | |
65 | * have a way to deal with that gracefully. Right now I used straightforward | |
66 | * wrappers, but this needs further analysis wrt potential overflows. | |
67 | */ | |
68 | extern int get_hardware_list(char *); | |
69 | extern int get_stram_list(char *); | |
1da177e4 LT |
70 | extern int get_exec_domain_list(char *); |
71 | extern int get_dma_list(char *); | |
1da177e4 LT |
72 | |
73 | static int proc_calc_metrics(char *page, char **start, off_t off, | |
74 | int count, int *eof, int len) | |
75 | { | |
76 | if (len <= off+count) *eof = 1; | |
77 | *start = page + off; | |
78 | len -= off; | |
79 | if (len>count) len = count; | |
80 | if (len<0) len = 0; | |
81 | return len; | |
82 | } | |
83 | ||
84 | static int loadavg_read_proc(char *page, char **start, off_t off, | |
85 | int count, int *eof, void *data) | |
86 | { | |
87 | int a, b, c; | |
88 | int len; | |
07a154b2 MS |
89 | unsigned long seq; |
90 | ||
91 | do { | |
92 | seq = read_seqbegin(&xtime_lock); | |
93 | a = avenrun[0] + (FIXED_1/200); | |
94 | b = avenrun[1] + (FIXED_1/200); | |
95 | c = avenrun[2] + (FIXED_1/200); | |
96 | } while (read_seqretry(&xtime_lock, seq)); | |
1da177e4 | 97 | |
1da177e4 LT |
98 | len = sprintf(page,"%d.%02d %d.%02d %d.%02d %ld/%d %d\n", |
99 | LOAD_INT(a), LOAD_FRAC(a), | |
100 | LOAD_INT(b), LOAD_FRAC(b), | |
101 | LOAD_INT(c), LOAD_FRAC(c), | |
2894d650 SB |
102 | nr_running(), nr_threads, |
103 | task_active_pid_ns(current)->last_pid); | |
1da177e4 LT |
104 | return proc_calc_metrics(page, start, off, count, eof, len); |
105 | } | |
106 | ||
107 | static int uptime_read_proc(char *page, char **start, off_t off, | |
108 | int count, int *eof, void *data) | |
109 | { | |
110 | struct timespec uptime; | |
111 | struct timespec idle; | |
112 | int len; | |
113 | cputime_t idletime = cputime_add(init_task.utime, init_task.stime); | |
114 | ||
115 | do_posix_clock_monotonic_gettime(&uptime); | |
d6214141 | 116 | monotonic_to_bootbased(&uptime); |
1da177e4 LT |
117 | cputime_to_timespec(idletime, &idle); |
118 | len = sprintf(page,"%lu.%02lu %lu.%02lu\n", | |
119 | (unsigned long) uptime.tv_sec, | |
120 | (uptime.tv_nsec / (NSEC_PER_SEC / 100)), | |
121 | (unsigned long) idle.tv_sec, | |
122 | (idle.tv_nsec / (NSEC_PER_SEC / 100))); | |
123 | ||
124 | return proc_calc_metrics(page, start, off, count, eof, len); | |
125 | } | |
126 | ||
ce0c0e50 AK |
127 | int __attribute__((weak)) arch_report_meminfo(char *page) |
128 | { | |
129 | return 0; | |
130 | } | |
131 | ||
1da177e4 LT |
132 | static int meminfo_read_proc(char *page, char **start, off_t off, |
133 | int count, int *eof, void *data) | |
134 | { | |
135 | struct sysinfo i; | |
136 | int len; | |
1da177e4 LT |
137 | unsigned long committed; |
138 | unsigned long allowed; | |
139 | struct vmalloc_info vmi; | |
4c4c402d | 140 | long cached; |
1da177e4 | 141 | |
1da177e4 LT |
142 | /* |
143 | * display in kilobytes. | |
144 | */ | |
145 | #define K(x) ((x) << (PAGE_SHIFT - 10)) | |
146 | si_meminfo(&i); | |
147 | si_swapinfo(&i); | |
80119ef5 | 148 | committed = atomic_long_read(&vm_committed_space); |
1da177e4 LT |
149 | allowed = ((totalram_pages - hugetlb_total_pages()) |
150 | * sysctl_overcommit_ratio / 100) + total_swap_pages; | |
151 | ||
347ce434 CL |
152 | cached = global_page_state(NR_FILE_PAGES) - |
153 | total_swapcache_pages - i.bufferram; | |
4c4c402d MH |
154 | if (cached < 0) |
155 | cached = 0; | |
156 | ||
1da177e4 LT |
157 | get_vmalloc_info(&vmi); |
158 | ||
159 | /* | |
160 | * Tagged format, for easy grepping and expansion. | |
161 | */ | |
162 | len = sprintf(page, | |
163 | "MemTotal: %8lu kB\n" | |
164 | "MemFree: %8lu kB\n" | |
165 | "Buffers: %8lu kB\n" | |
166 | "Cached: %8lu kB\n" | |
167 | "SwapCached: %8lu kB\n" | |
168 | "Active: %8lu kB\n" | |
169 | "Inactive: %8lu kB\n" | |
182e8e23 | 170 | #ifdef CONFIG_HIGHMEM |
1da177e4 LT |
171 | "HighTotal: %8lu kB\n" |
172 | "HighFree: %8lu kB\n" | |
173 | "LowTotal: %8lu kB\n" | |
174 | "LowFree: %8lu kB\n" | |
182e8e23 | 175 | #endif |
1da177e4 LT |
176 | "SwapTotal: %8lu kB\n" |
177 | "SwapFree: %8lu kB\n" | |
178 | "Dirty: %8lu kB\n" | |
179 | "Writeback: %8lu kB\n" | |
f3dbd344 | 180 | "AnonPages: %8lu kB\n" |
1da177e4 LT |
181 | "Mapped: %8lu kB\n" |
182 | "Slab: %8lu kB\n" | |
972d1a7b CL |
183 | "SReclaimable: %8lu kB\n" |
184 | "SUnreclaim: %8lu kB\n" | |
df849a15 | 185 | "PageTables: %8lu kB\n" |
f5ef68da | 186 | "NFS_Unstable: %8lu kB\n" |
d2c5e30c | 187 | "Bounce: %8lu kB\n" |
fc3ba692 | 188 | "WritebackTmp: %8lu kB\n" |
1da177e4 LT |
189 | "CommitLimit: %8lu kB\n" |
190 | "Committed_AS: %8lu kB\n" | |
1da177e4 LT |
191 | "VmallocTotal: %8lu kB\n" |
192 | "VmallocUsed: %8lu kB\n" | |
4b856152 KM |
193 | "VmallocChunk: %8lu kB\n" |
194 | "Quicklists: %8lu kB\n", | |
1da177e4 LT |
195 | K(i.totalram), |
196 | K(i.freeram), | |
197 | K(i.bufferram), | |
4c4c402d | 198 | K(cached), |
1da177e4 | 199 | K(total_swapcache_pages), |
65e458d4 CL |
200 | K(global_page_state(NR_ACTIVE)), |
201 | K(global_page_state(NR_INACTIVE)), | |
182e8e23 | 202 | #ifdef CONFIG_HIGHMEM |
1da177e4 LT |
203 | K(i.totalhigh), |
204 | K(i.freehigh), | |
205 | K(i.totalram-i.totalhigh), | |
206 | K(i.freeram-i.freehigh), | |
182e8e23 | 207 | #endif |
1da177e4 LT |
208 | K(i.totalswap), |
209 | K(i.freeswap), | |
b1e7a8fd | 210 | K(global_page_state(NR_FILE_DIRTY)), |
ce866b34 | 211 | K(global_page_state(NR_WRITEBACK)), |
f3dbd344 | 212 | K(global_page_state(NR_ANON_PAGES)), |
65ba55f5 | 213 | K(global_page_state(NR_FILE_MAPPED)), |
972d1a7b CL |
214 | K(global_page_state(NR_SLAB_RECLAIMABLE) + |
215 | global_page_state(NR_SLAB_UNRECLAIMABLE)), | |
216 | K(global_page_state(NR_SLAB_RECLAIMABLE)), | |
217 | K(global_page_state(NR_SLAB_UNRECLAIMABLE)), | |
df849a15 | 218 | K(global_page_state(NR_PAGETABLE)), |
fd39fc85 | 219 | K(global_page_state(NR_UNSTABLE_NFS)), |
d2c5e30c | 220 | K(global_page_state(NR_BOUNCE)), |
fc3ba692 | 221 | K(global_page_state(NR_WRITEBACK_TEMP)), |
1da177e4 LT |
222 | K(allowed), |
223 | K(committed), | |
1da177e4 LT |
224 | (unsigned long)VMALLOC_TOTAL >> 10, |
225 | vmi.used >> 10, | |
4b856152 KM |
226 | vmi.largest_chunk >> 10, |
227 | K(quicklist_total_size()) | |
1da177e4 LT |
228 | ); |
229 | ||
230 | len += hugetlb_report_meminfo(page + len); | |
231 | ||
ce0c0e50 AK |
232 | len += arch_report_meminfo(page + len); |
233 | ||
1da177e4 LT |
234 | return proc_calc_metrics(page, start, off, count, eof, len); |
235 | #undef K | |
236 | } | |
237 | ||
1da177e4 LT |
238 | static int fragmentation_open(struct inode *inode, struct file *file) |
239 | { | |
240 | (void)inode; | |
241 | return seq_open(file, &fragmentation_op); | |
242 | } | |
243 | ||
00977a59 | 244 | static const struct file_operations fragmentation_file_operations = { |
1da177e4 LT |
245 | .open = fragmentation_open, |
246 | .read = seq_read, | |
247 | .llseek = seq_lseek, | |
248 | .release = seq_release, | |
249 | }; | |
250 | ||
467c996c MG |
251 | static int pagetypeinfo_open(struct inode *inode, struct file *file) |
252 | { | |
253 | return seq_open(file, &pagetypeinfo_op); | |
254 | } | |
255 | ||
256 | static const struct file_operations pagetypeinfo_file_ops = { | |
257 | .open = pagetypeinfo_open, | |
258 | .read = seq_read, | |
259 | .llseek = seq_lseek, | |
260 | .release = seq_release, | |
261 | }; | |
262 | ||
295ab934 ND |
263 | static int zoneinfo_open(struct inode *inode, struct file *file) |
264 | { | |
265 | return seq_open(file, &zoneinfo_op); | |
266 | } | |
267 | ||
00977a59 | 268 | static const struct file_operations proc_zoneinfo_file_operations = { |
295ab934 ND |
269 | .open = zoneinfo_open, |
270 | .read = seq_read, | |
271 | .llseek = seq_lseek, | |
272 | .release = seq_release, | |
273 | }; | |
274 | ||
1da177e4 LT |
275 | static int version_read_proc(char *page, char **start, off_t off, |
276 | int count, int *eof, void *data) | |
277 | { | |
278 | int len; | |
279 | ||
3eb3c740 | 280 | len = snprintf(page, PAGE_SIZE, linux_proc_banner, |
8993780a LT |
281 | utsname()->sysname, |
282 | utsname()->release, | |
283 | utsname()->version); | |
1da177e4 LT |
284 | return proc_calc_metrics(page, start, off, count, eof, len); |
285 | } | |
286 | ||
03a44825 | 287 | extern const struct seq_operations cpuinfo_op; |
1da177e4 LT |
288 | static int cpuinfo_open(struct inode *inode, struct file *file) |
289 | { | |
290 | return seq_open(file, &cpuinfo_op); | |
291 | } | |
7170be5f | 292 | |
00977a59 | 293 | static const struct file_operations proc_cpuinfo_operations = { |
68eef3b4 JK |
294 | .open = cpuinfo_open, |
295 | .read = seq_read, | |
296 | .llseek = seq_lseek, | |
297 | .release = seq_release, | |
7170be5f NH |
298 | }; |
299 | ||
68eef3b4 | 300 | static int devinfo_show(struct seq_file *f, void *v) |
7170be5f | 301 | { |
68eef3b4 JK |
302 | int i = *(loff_t *) v; |
303 | ||
304 | if (i < CHRDEV_MAJOR_HASH_SIZE) { | |
305 | if (i == 0) | |
306 | seq_printf(f, "Character devices:\n"); | |
307 | chrdev_show(f, i); | |
9361401e DH |
308 | } |
309 | #ifdef CONFIG_BLOCK | |
310 | else { | |
68eef3b4 JK |
311 | i -= CHRDEV_MAJOR_HASH_SIZE; |
312 | if (i == 0) | |
313 | seq_printf(f, "\nBlock devices:\n"); | |
314 | blkdev_show(f, i); | |
7170be5f | 315 | } |
9361401e | 316 | #endif |
68eef3b4 | 317 | return 0; |
7170be5f NH |
318 | } |
319 | ||
68eef3b4 | 320 | static void *devinfo_start(struct seq_file *f, loff_t *pos) |
7170be5f | 321 | { |
68eef3b4 JK |
322 | if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE)) |
323 | return pos; | |
324 | return NULL; | |
7170be5f NH |
325 | } |
326 | ||
68eef3b4 | 327 | static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos) |
7170be5f | 328 | { |
68eef3b4 JK |
329 | (*pos)++; |
330 | if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE)) | |
331 | return NULL; | |
332 | return pos; | |
7170be5f NH |
333 | } |
334 | ||
68eef3b4 | 335 | static void devinfo_stop(struct seq_file *f, void *v) |
7170be5f | 336 | { |
68eef3b4 | 337 | /* Nothing to do */ |
7170be5f NH |
338 | } |
339 | ||
03a44825 | 340 | static const struct seq_operations devinfo_ops = { |
68eef3b4 JK |
341 | .start = devinfo_start, |
342 | .next = devinfo_next, | |
343 | .stop = devinfo_stop, | |
344 | .show = devinfo_show | |
7170be5f NH |
345 | }; |
346 | ||
68eef3b4 | 347 | static int devinfo_open(struct inode *inode, struct file *filp) |
7170be5f | 348 | { |
68eef3b4 | 349 | return seq_open(filp, &devinfo_ops); |
7170be5f NH |
350 | } |
351 | ||
00977a59 | 352 | static const struct file_operations proc_devinfo_operations = { |
7170be5f NH |
353 | .open = devinfo_open, |
354 | .read = seq_read, | |
355 | .llseek = seq_lseek, | |
356 | .release = seq_release, | |
357 | }; | |
358 | ||
1da177e4 LT |
359 | static int vmstat_open(struct inode *inode, struct file *file) |
360 | { | |
361 | return seq_open(file, &vmstat_op); | |
362 | } | |
00977a59 | 363 | static const struct file_operations proc_vmstat_file_operations = { |
1da177e4 LT |
364 | .open = vmstat_open, |
365 | .read = seq_read, | |
366 | .llseek = seq_lseek, | |
367 | .release = seq_release, | |
368 | }; | |
369 | ||
370 | #ifdef CONFIG_PROC_HARDWARE | |
371 | static int hardware_read_proc(char *page, char **start, off_t off, | |
372 | int count, int *eof, void *data) | |
373 | { | |
374 | int len = get_hardware_list(page); | |
375 | return proc_calc_metrics(page, start, off, count, eof, len); | |
376 | } | |
377 | #endif | |
378 | ||
379 | #ifdef CONFIG_STRAM_PROC | |
380 | static int stram_read_proc(char *page, char **start, off_t off, | |
381 | int count, int *eof, void *data) | |
382 | { | |
383 | int len = get_stram_list(page); | |
384 | return proc_calc_metrics(page, start, off, count, eof, len); | |
385 | } | |
386 | #endif | |
387 | ||
9361401e | 388 | #ifdef CONFIG_BLOCK |
1da177e4 LT |
389 | static int partitions_open(struct inode *inode, struct file *file) |
390 | { | |
391 | return seq_open(file, &partitions_op); | |
392 | } | |
00977a59 | 393 | static const struct file_operations proc_partitions_operations = { |
1da177e4 LT |
394 | .open = partitions_open, |
395 | .read = seq_read, | |
396 | .llseek = seq_lseek, | |
397 | .release = seq_release, | |
398 | }; | |
399 | ||
1da177e4 LT |
400 | static int diskstats_open(struct inode *inode, struct file *file) |
401 | { | |
402 | return seq_open(file, &diskstats_op); | |
403 | } | |
00977a59 | 404 | static const struct file_operations proc_diskstats_operations = { |
1da177e4 LT |
405 | .open = diskstats_open, |
406 | .read = seq_read, | |
407 | .llseek = seq_lseek, | |
408 | .release = seq_release, | |
409 | }; | |
9361401e | 410 | #endif |
1da177e4 LT |
411 | |
412 | #ifdef CONFIG_MODULES | |
03a44825 | 413 | extern const struct seq_operations modules_op; |
1da177e4 LT |
414 | static int modules_open(struct inode *inode, struct file *file) |
415 | { | |
416 | return seq_open(file, &modules_op); | |
417 | } | |
00977a59 | 418 | static const struct file_operations proc_modules_operations = { |
1da177e4 LT |
419 | .open = modules_open, |
420 | .read = seq_read, | |
421 | .llseek = seq_lseek, | |
422 | .release = seq_release, | |
423 | }; | |
424 | #endif | |
425 | ||
158a9624 | 426 | #ifdef CONFIG_SLABINFO |
1da177e4 LT |
427 | static int slabinfo_open(struct inode *inode, struct file *file) |
428 | { | |
429 | return seq_open(file, &slabinfo_op); | |
430 | } | |
00977a59 | 431 | static const struct file_operations proc_slabinfo_operations = { |
1da177e4 LT |
432 | .open = slabinfo_open, |
433 | .read = seq_read, | |
434 | .write = slabinfo_write, | |
435 | .llseek = seq_lseek, | |
436 | .release = seq_release, | |
437 | }; | |
871751e2 AV |
438 | |
439 | #ifdef CONFIG_DEBUG_SLAB_LEAK | |
03a44825 | 440 | extern const struct seq_operations slabstats_op; |
871751e2 AV |
441 | static int slabstats_open(struct inode *inode, struct file *file) |
442 | { | |
443 | unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL); | |
444 | int ret = -ENOMEM; | |
445 | if (n) { | |
446 | ret = seq_open(file, &slabstats_op); | |
447 | if (!ret) { | |
448 | struct seq_file *m = file->private_data; | |
449 | *n = PAGE_SIZE / (2 * sizeof(unsigned long)); | |
450 | m->private = n; | |
451 | n = NULL; | |
452 | } | |
453 | kfree(n); | |
454 | } | |
455 | return ret; | |
456 | } | |
457 | ||
00977a59 | 458 | static const struct file_operations proc_slabstats_operations = { |
871751e2 AV |
459 | .open = slabstats_open, |
460 | .read = seq_read, | |
461 | .llseek = seq_lseek, | |
09f0892e | 462 | .release = seq_release_private, |
871751e2 AV |
463 | }; |
464 | #endif | |
10cef602 | 465 | #endif |
1da177e4 | 466 | |
a10aa579 CL |
467 | #ifdef CONFIG_MMU |
468 | static int vmalloc_open(struct inode *inode, struct file *file) | |
469 | { | |
a47a126a ED |
470 | unsigned int *ptr = NULL; |
471 | int ret; | |
472 | ||
473 | if (NUMA_BUILD) | |
474 | ptr = kmalloc(nr_node_ids * sizeof(unsigned int), GFP_KERNEL); | |
475 | ret = seq_open(file, &vmalloc_op); | |
476 | if (!ret) { | |
477 | struct seq_file *m = file->private_data; | |
478 | m->private = ptr; | |
479 | } else | |
480 | kfree(ptr); | |
481 | return ret; | |
a10aa579 CL |
482 | } |
483 | ||
484 | static const struct file_operations proc_vmalloc_operations = { | |
485 | .open = vmalloc_open, | |
486 | .read = seq_read, | |
487 | .llseek = seq_lseek, | |
a47a126a | 488 | .release = seq_release_private, |
a10aa579 CL |
489 | }; |
490 | #endif | |
491 | ||
a2eddfa9 JB |
492 | #ifndef arch_irq_stat_cpu |
493 | #define arch_irq_stat_cpu(cpu) 0 | |
494 | #endif | |
495 | #ifndef arch_irq_stat | |
496 | #define arch_irq_stat() 0 | |
497 | #endif | |
498 | ||
1da177e4 LT |
499 | static int show_stat(struct seq_file *p, void *v) |
500 | { | |
501 | int i; | |
502 | unsigned long jif; | |
503 | cputime64_t user, nice, system, idle, iowait, irq, softirq, steal; | |
5e84cfde | 504 | cputime64_t guest; |
1da177e4 | 505 | u64 sum = 0; |
924b42d5 | 506 | struct timespec boottime; |
4004c69a RT |
507 | unsigned int *per_irq_sum; |
508 | ||
509 | per_irq_sum = kzalloc(sizeof(unsigned int)*NR_IRQS, GFP_KERNEL); | |
510 | if (!per_irq_sum) | |
511 | return -ENOMEM; | |
1da177e4 LT |
512 | |
513 | user = nice = system = idle = iowait = | |
514 | irq = softirq = steal = cputime64_zero; | |
5e84cfde | 515 | guest = cputime64_zero; |
924b42d5 TJ |
516 | getboottime(&boottime); |
517 | jif = boottime.tv_sec; | |
1da177e4 | 518 | |
0a945022 | 519 | for_each_possible_cpu(i) { |
1da177e4 LT |
520 | int j; |
521 | ||
522 | user = cputime64_add(user, kstat_cpu(i).cpustat.user); | |
523 | nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice); | |
524 | system = cputime64_add(system, kstat_cpu(i).cpustat.system); | |
525 | idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle); | |
526 | iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait); | |
527 | irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq); | |
528 | softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq); | |
529 | steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal); | |
5e84cfde | 530 | guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest); |
4004c69a RT |
531 | for (j = 0; j < NR_IRQS; j++) { |
532 | unsigned int temp = kstat_cpu(i).irqs[j]; | |
533 | sum += temp; | |
534 | per_irq_sum[j] += temp; | |
535 | } | |
a2eddfa9 | 536 | sum += arch_irq_stat_cpu(i); |
1da177e4 | 537 | } |
a2eddfa9 | 538 | sum += arch_irq_stat(); |
1da177e4 | 539 | |
5e84cfde | 540 | seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu %llu\n", |
1da177e4 LT |
541 | (unsigned long long)cputime64_to_clock_t(user), |
542 | (unsigned long long)cputime64_to_clock_t(nice), | |
543 | (unsigned long long)cputime64_to_clock_t(system), | |
544 | (unsigned long long)cputime64_to_clock_t(idle), | |
545 | (unsigned long long)cputime64_to_clock_t(iowait), | |
546 | (unsigned long long)cputime64_to_clock_t(irq), | |
547 | (unsigned long long)cputime64_to_clock_t(softirq), | |
5e84cfde LV |
548 | (unsigned long long)cputime64_to_clock_t(steal), |
549 | (unsigned long long)cputime64_to_clock_t(guest)); | |
1da177e4 LT |
550 | for_each_online_cpu(i) { |
551 | ||
552 | /* Copy values here to work around gcc-2.95.3, gcc-2.96 */ | |
553 | user = kstat_cpu(i).cpustat.user; | |
554 | nice = kstat_cpu(i).cpustat.nice; | |
555 | system = kstat_cpu(i).cpustat.system; | |
556 | idle = kstat_cpu(i).cpustat.idle; | |
557 | iowait = kstat_cpu(i).cpustat.iowait; | |
558 | irq = kstat_cpu(i).cpustat.irq; | |
559 | softirq = kstat_cpu(i).cpustat.softirq; | |
560 | steal = kstat_cpu(i).cpustat.steal; | |
5e84cfde LV |
561 | guest = kstat_cpu(i).cpustat.guest; |
562 | seq_printf(p, | |
563 | "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu\n", | |
1da177e4 LT |
564 | i, |
565 | (unsigned long long)cputime64_to_clock_t(user), | |
566 | (unsigned long long)cputime64_to_clock_t(nice), | |
567 | (unsigned long long)cputime64_to_clock_t(system), | |
568 | (unsigned long long)cputime64_to_clock_t(idle), | |
569 | (unsigned long long)cputime64_to_clock_t(iowait), | |
570 | (unsigned long long)cputime64_to_clock_t(irq), | |
571 | (unsigned long long)cputime64_to_clock_t(softirq), | |
5e84cfde LV |
572 | (unsigned long long)cputime64_to_clock_t(steal), |
573 | (unsigned long long)cputime64_to_clock_t(guest)); | |
1da177e4 LT |
574 | } |
575 | seq_printf(p, "intr %llu", (unsigned long long)sum); | |
576 | ||
1da177e4 | 577 | for (i = 0; i < NR_IRQS; i++) |
4004c69a | 578 | seq_printf(p, " %u", per_irq_sum[i]); |
1da177e4 LT |
579 | |
580 | seq_printf(p, | |
581 | "\nctxt %llu\n" | |
582 | "btime %lu\n" | |
583 | "processes %lu\n" | |
584 | "procs_running %lu\n" | |
585 | "procs_blocked %lu\n", | |
586 | nr_context_switches(), | |
587 | (unsigned long)jif, | |
588 | total_forks, | |
589 | nr_running(), | |
590 | nr_iowait()); | |
591 | ||
4004c69a | 592 | kfree(per_irq_sum); |
1da177e4 LT |
593 | return 0; |
594 | } | |
595 | ||
596 | static int stat_open(struct inode *inode, struct file *file) | |
597 | { | |
598 | unsigned size = 4096 * (1 + num_possible_cpus() / 32); | |
599 | char *buf; | |
600 | struct seq_file *m; | |
601 | int res; | |
602 | ||
603 | /* don't ask for more than the kmalloc() max size, currently 128 KB */ | |
604 | if (size > 128 * 1024) | |
605 | size = 128 * 1024; | |
606 | buf = kmalloc(size, GFP_KERNEL); | |
607 | if (!buf) | |
608 | return -ENOMEM; | |
609 | ||
610 | res = single_open(file, show_stat, NULL); | |
611 | if (!res) { | |
612 | m = file->private_data; | |
613 | m->buf = buf; | |
614 | m->size = size; | |
615 | } else | |
616 | kfree(buf); | |
617 | return res; | |
618 | } | |
00977a59 | 619 | static const struct file_operations proc_stat_operations = { |
1da177e4 LT |
620 | .open = stat_open, |
621 | .read = seq_read, | |
622 | .llseek = seq_lseek, | |
623 | .release = single_release, | |
624 | }; | |
625 | ||
1da177e4 LT |
626 | /* |
627 | * /proc/interrupts | |
628 | */ | |
629 | static void *int_seq_start(struct seq_file *f, loff_t *pos) | |
630 | { | |
631 | return (*pos <= NR_IRQS) ? pos : NULL; | |
632 | } | |
633 | ||
634 | static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos) | |
635 | { | |
636 | (*pos)++; | |
637 | if (*pos > NR_IRQS) | |
638 | return NULL; | |
639 | return pos; | |
640 | } | |
641 | ||
642 | static void int_seq_stop(struct seq_file *f, void *v) | |
643 | { | |
644 | /* Nothing to do */ | |
645 | } | |
646 | ||
647 | ||
03a44825 | 648 | static const struct seq_operations int_seq_ops = { |
1da177e4 LT |
649 | .start = int_seq_start, |
650 | .next = int_seq_next, | |
651 | .stop = int_seq_stop, | |
652 | .show = show_interrupts | |
653 | }; | |
654 | ||
655 | static int interrupts_open(struct inode *inode, struct file *filp) | |
656 | { | |
657 | return seq_open(filp, &int_seq_ops); | |
658 | } | |
659 | ||
00977a59 | 660 | static const struct file_operations proc_interrupts_operations = { |
1da177e4 LT |
661 | .open = interrupts_open, |
662 | .read = seq_read, | |
663 | .llseek = seq_lseek, | |
664 | .release = seq_release, | |
665 | }; | |
666 | ||
667 | static int filesystems_read_proc(char *page, char **start, off_t off, | |
668 | int count, int *eof, void *data) | |
669 | { | |
670 | int len = get_filesystem_list(page); | |
671 | return proc_calc_metrics(page, start, off, count, eof, len); | |
672 | } | |
673 | ||
674 | static int cmdline_read_proc(char *page, char **start, off_t off, | |
675 | int count, int *eof, void *data) | |
676 | { | |
677 | int len; | |
678 | ||
679 | len = sprintf(page, "%s\n", saved_command_line); | |
680 | return proc_calc_metrics(page, start, off, count, eof, len); | |
681 | } | |
682 | ||
7f8ada98 | 683 | static int locks_open(struct inode *inode, struct file *filp) |
1da177e4 | 684 | { |
7f8ada98 | 685 | return seq_open(filp, &locks_seq_operations); |
1da177e4 LT |
686 | } |
687 | ||
7f8ada98 PE |
688 | static const struct file_operations proc_locks_operations = { |
689 | .open = locks_open, | |
690 | .read = seq_read, | |
691 | .llseek = seq_lseek, | |
692 | .release = seq_release, | |
693 | }; | |
694 | ||
1da177e4 LT |
695 | static int execdomains_read_proc(char *page, char **start, off_t off, |
696 | int count, int *eof, void *data) | |
697 | { | |
698 | int len = get_exec_domain_list(page); | |
699 | return proc_calc_metrics(page, start, off, count, eof, len); | |
700 | } | |
701 | ||
702 | #ifdef CONFIG_MAGIC_SYSRQ | |
703 | /* | |
704 | * writing 'C' to /proc/sysrq-trigger is like sysrq-C | |
705 | */ | |
706 | static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf, | |
707 | size_t count, loff_t *ppos) | |
708 | { | |
709 | if (count) { | |
710 | char c; | |
711 | ||
712 | if (get_user(c, buf)) | |
713 | return -EFAULT; | |
7d12e780 | 714 | __handle_sysrq(c, NULL, 0); |
1da177e4 LT |
715 | } |
716 | return count; | |
717 | } | |
718 | ||
00977a59 | 719 | static const struct file_operations proc_sysrq_trigger_operations = { |
1da177e4 LT |
720 | .write = write_sysrq_trigger, |
721 | }; | |
722 | #endif | |
723 | ||
1e883281 | 724 | #ifdef CONFIG_PROC_PAGE_MONITOR |
161f47bf MM |
725 | #define KPMSIZE sizeof(u64) |
726 | #define KPMMASK (KPMSIZE - 1) | |
727 | /* /proc/kpagecount - an array exposing page counts | |
728 | * | |
729 | * Each entry is a u64 representing the corresponding | |
730 | * physical page count. | |
731 | */ | |
732 | static ssize_t kpagecount_read(struct file *file, char __user *buf, | |
733 | size_t count, loff_t *ppos) | |
734 | { | |
735 | u64 __user *out = (u64 __user *)buf; | |
736 | struct page *ppage; | |
737 | unsigned long src = *ppos; | |
738 | unsigned long pfn; | |
739 | ssize_t ret = 0; | |
740 | u64 pcount; | |
741 | ||
742 | pfn = src / KPMSIZE; | |
743 | count = min_t(size_t, count, (max_pfn * KPMSIZE) - src); | |
744 | if (src & KPMMASK || count & KPMMASK) | |
4710d1ac | 745 | return -EINVAL; |
161f47bf MM |
746 | |
747 | while (count > 0) { | |
304daa81 MM |
748 | ppage = NULL; |
749 | if (pfn_valid(pfn)) | |
750 | ppage = pfn_to_page(pfn); | |
751 | pfn++; | |
161f47bf MM |
752 | if (!ppage) |
753 | pcount = 0; | |
754 | else | |
bbcdac0c | 755 | pcount = page_mapcount(ppage); |
161f47bf MM |
756 | |
757 | if (put_user(pcount, out++)) { | |
758 | ret = -EFAULT; | |
759 | break; | |
760 | } | |
761 | ||
762 | count -= KPMSIZE; | |
763 | } | |
764 | ||
765 | *ppos += (char __user *)out - buf; | |
766 | if (!ret) | |
767 | ret = (char __user *)out - buf; | |
768 | return ret; | |
769 | } | |
770 | ||
771 | static struct file_operations proc_kpagecount_operations = { | |
772 | .llseek = mem_lseek, | |
773 | .read = kpagecount_read, | |
774 | }; | |
775 | ||
304daa81 MM |
776 | /* /proc/kpageflags - an array exposing page flags |
777 | * | |
778 | * Each entry is a u64 representing the corresponding | |
779 | * physical page flags. | |
780 | */ | |
781 | ||
782 | /* These macros are used to decouple internal flags from exported ones */ | |
783 | ||
784 | #define KPF_LOCKED 0 | |
785 | #define KPF_ERROR 1 | |
786 | #define KPF_REFERENCED 2 | |
787 | #define KPF_UPTODATE 3 | |
788 | #define KPF_DIRTY 4 | |
789 | #define KPF_LRU 5 | |
790 | #define KPF_ACTIVE 6 | |
791 | #define KPF_SLAB 7 | |
792 | #define KPF_WRITEBACK 8 | |
793 | #define KPF_RECLAIM 9 | |
794 | #define KPF_BUDDY 10 | |
795 | ||
796 | #define kpf_copy_bit(flags, srcpos, dstpos) (((flags >> srcpos) & 1) << dstpos) | |
797 | ||
798 | static ssize_t kpageflags_read(struct file *file, char __user *buf, | |
799 | size_t count, loff_t *ppos) | |
800 | { | |
801 | u64 __user *out = (u64 __user *)buf; | |
802 | struct page *ppage; | |
803 | unsigned long src = *ppos; | |
804 | unsigned long pfn; | |
805 | ssize_t ret = 0; | |
806 | u64 kflags, uflags; | |
807 | ||
808 | pfn = src / KPMSIZE; | |
809 | count = min_t(unsigned long, count, (max_pfn * KPMSIZE) - src); | |
810 | if (src & KPMMASK || count & KPMMASK) | |
4710d1ac | 811 | return -EINVAL; |
304daa81 MM |
812 | |
813 | while (count > 0) { | |
814 | ppage = NULL; | |
815 | if (pfn_valid(pfn)) | |
816 | ppage = pfn_to_page(pfn); | |
817 | pfn++; | |
818 | if (!ppage) | |
819 | kflags = 0; | |
820 | else | |
821 | kflags = ppage->flags; | |
822 | ||
823 | uflags = kpf_copy_bit(KPF_LOCKED, PG_locked, kflags) | | |
824 | kpf_copy_bit(kflags, KPF_ERROR, PG_error) | | |
825 | kpf_copy_bit(kflags, KPF_REFERENCED, PG_referenced) | | |
826 | kpf_copy_bit(kflags, KPF_UPTODATE, PG_uptodate) | | |
827 | kpf_copy_bit(kflags, KPF_DIRTY, PG_dirty) | | |
828 | kpf_copy_bit(kflags, KPF_LRU, PG_lru) | | |
829 | kpf_copy_bit(kflags, KPF_ACTIVE, PG_active) | | |
830 | kpf_copy_bit(kflags, KPF_SLAB, PG_slab) | | |
831 | kpf_copy_bit(kflags, KPF_WRITEBACK, PG_writeback) | | |
832 | kpf_copy_bit(kflags, KPF_RECLAIM, PG_reclaim) | | |
833 | kpf_copy_bit(kflags, KPF_BUDDY, PG_buddy); | |
834 | ||
835 | if (put_user(uflags, out++)) { | |
836 | ret = -EFAULT; | |
837 | break; | |
838 | } | |
839 | ||
840 | count -= KPMSIZE; | |
841 | } | |
842 | ||
843 | *ppos += (char __user *)out - buf; | |
844 | if (!ret) | |
845 | ret = (char __user *)out - buf; | |
846 | return ret; | |
847 | } | |
848 | ||
849 | static struct file_operations proc_kpageflags_operations = { | |
850 | .llseek = mem_lseek, | |
851 | .read = kpageflags_read, | |
852 | }; | |
1e883281 | 853 | #endif /* CONFIG_PROC_PAGE_MONITOR */ |
304daa81 | 854 | |
1da177e4 LT |
855 | struct proc_dir_entry *proc_root_kcore; |
856 | ||
1da177e4 LT |
857 | void __init proc_misc_init(void) |
858 | { | |
1da177e4 LT |
859 | static struct { |
860 | char *name; | |
861 | int (*read_proc)(char*,char**,off_t,int,int*,void*); | |
862 | } *p, simple_ones[] = { | |
863 | {"loadavg", loadavg_read_proc}, | |
864 | {"uptime", uptime_read_proc}, | |
865 | {"meminfo", meminfo_read_proc}, | |
866 | {"version", version_read_proc}, | |
867 | #ifdef CONFIG_PROC_HARDWARE | |
868 | {"hardware", hardware_read_proc}, | |
869 | #endif | |
870 | #ifdef CONFIG_STRAM_PROC | |
871 | {"stram", stram_read_proc}, | |
872 | #endif | |
1da177e4 LT |
873 | {"filesystems", filesystems_read_proc}, |
874 | {"cmdline", cmdline_read_proc}, | |
1da177e4 LT |
875 | {"execdomains", execdomains_read_proc}, |
876 | {NULL,} | |
877 | }; | |
878 | for (p = simple_ones; p->name; p++) | |
879 | create_proc_read_entry(p->name, 0, NULL, p->read_proc, NULL); | |
880 | ||
881 | proc_symlink("mounts", NULL, "self/mounts"); | |
882 | ||
883 | /* And now for trickier ones */ | |
c36264df | 884 | #ifdef CONFIG_PRINTK |
c74c120a | 885 | proc_create("kmsg", S_IRUSR, NULL, &proc_kmsg_operations); |
c36264df | 886 | #endif |
0d5c9f5f AD |
887 | proc_create("locks", 0, NULL, &proc_locks_operations); |
888 | proc_create("devices", 0, NULL, &proc_devinfo_operations); | |
889 | proc_create("cpuinfo", 0, NULL, &proc_cpuinfo_operations); | |
9361401e | 890 | #ifdef CONFIG_BLOCK |
0d5c9f5f | 891 | proc_create("partitions", 0, NULL, &proc_partitions_operations); |
9361401e | 892 | #endif |
0d5c9f5f AD |
893 | proc_create("stat", 0, NULL, &proc_stat_operations); |
894 | proc_create("interrupts", 0, NULL, &proc_interrupts_operations); | |
158a9624 | 895 | #ifdef CONFIG_SLABINFO |
0d5c9f5f | 896 | proc_create("slabinfo",S_IWUSR|S_IRUGO,NULL,&proc_slabinfo_operations); |
871751e2 | 897 | #ifdef CONFIG_DEBUG_SLAB_LEAK |
0d5c9f5f | 898 | proc_create("slab_allocators", 0, NULL, &proc_slabstats_operations); |
871751e2 | 899 | #endif |
a10aa579 CL |
900 | #endif |
901 | #ifdef CONFIG_MMU | |
902 | proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations); | |
10cef602 | 903 | #endif |
0d5c9f5f AD |
904 | proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations); |
905 | proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops); | |
906 | proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations); | |
907 | proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations); | |
9361401e | 908 | #ifdef CONFIG_BLOCK |
0d5c9f5f | 909 | proc_create("diskstats", 0, NULL, &proc_diskstats_operations); |
9361401e | 910 | #endif |
1da177e4 | 911 | #ifdef CONFIG_MODULES |
0d5c9f5f | 912 | proc_create("modules", 0, NULL, &proc_modules_operations); |
1da177e4 LT |
913 | #endif |
914 | #ifdef CONFIG_SCHEDSTATS | |
0d5c9f5f | 915 | proc_create("schedstat", 0, NULL, &proc_schedstat_operations); |
1da177e4 LT |
916 | #endif |
917 | #ifdef CONFIG_PROC_KCORE | |
0d5c9f5f AD |
918 | proc_root_kcore = proc_create("kcore", S_IRUSR, NULL, &proc_kcore_operations); |
919 | if (proc_root_kcore) | |
1da177e4 LT |
920 | proc_root_kcore->size = |
921 | (size_t)high_memory - PAGE_OFFSET + PAGE_SIZE; | |
1da177e4 | 922 | #endif |
1e883281 | 923 | #ifdef CONFIG_PROC_PAGE_MONITOR |
0d5c9f5f AD |
924 | proc_create("kpagecount", S_IRUSR, NULL, &proc_kpagecount_operations); |
925 | proc_create("kpageflags", S_IRUSR, NULL, &proc_kpageflags_operations); | |
1e883281 | 926 | #endif |
666bfddb | 927 | #ifdef CONFIG_PROC_VMCORE |
0d5c9f5f | 928 | proc_vmcore = proc_create("vmcore", S_IRUSR, NULL, &proc_vmcore_operations); |
666bfddb | 929 | #endif |
1da177e4 | 930 | #ifdef CONFIG_MAGIC_SYSRQ |
0d5c9f5f | 931 | proc_create("sysrq-trigger", S_IWUSR, NULL, &proc_sysrq_trigger_operations); |
1da177e4 | 932 | #endif |
1da177e4 | 933 | } |