blob: 7a34571203bc46b335b2c03d52e48ef4fde9d4ea [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/proc/array.c
3 *
4 * Copyright (C) 1992 by Linus Torvalds
5 * based on ideas by Darren Senn
6 *
7 * Fixes:
8 * Michael. K. Johnson: stat,statm extensions.
9 * <johnsonm@stolaf.edu>
10 *
11 * Pauline Middelink : Made cmdline,envline only break at '\0's, to
12 * make sure SET_PROCTITLE works. Also removed
13 * bad '!' which forced address recalculation for
14 * EVERY character on the current page.
15 * <middelin@polyware.iaf.nl>
16 *
17 * Danny ter Haar : added cpuinfo
18 * <dth@cistron.nl>
19 *
20 * Alessandro Rubini : profile extension.
21 * <rubini@ipvvis.unipv.it>
22 *
23 * Jeff Tranter : added BogoMips field to cpuinfo
24 * <Jeff_Tranter@Mitel.COM>
25 *
26 * Bruno Haible : remove 4K limit for the maps file
27 * <haible@ma2s2.mathematik.uni-karlsruhe.de>
28 *
29 * Yves Arrouye : remove removal of trailing spaces in get_array.
30 * <Yves.Arrouye@marin.fdn.fr>
31 *
32 * Jerome Forissier : added per-CPU time information to /proc/stat
33 * and /proc/<pid>/cpu extension
34 * <forissier@isia.cma.fr>
35 * - Incorporation and non-SMP safe operation
36 * of forissier patch in 2.1.78 by
37 * Hans Marcus <crowbar@concepts.nl>
38 *
39 * aeb@cwi.nl : /proc/partitions
40 *
41 *
42 * Alan Cox : security fixes.
43 * <Alan.Cox@linux.org>
44 *
45 * Al Viro : safe handling of mm_struct
46 *
47 * Gerhard Wichert : added BIGMEM support
48 * Siemens AG <Gerhard.Wichert@pdb.siemens.de>
49 *
50 * Al Viro & Jeff Garzik : moved most of the thing into base.c and
51 * : proc_misc.c. The rest may eventually go into
52 * : base.c too.
53 */
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055#include <linux/types.h>
56#include <linux/errno.h>
57#include <linux/time.h>
58#include <linux/kernel.h>
59#include <linux/kernel_stat.h>
60#include <linux/tty.h>
61#include <linux/string.h>
62#include <linux/mman.h>
63#include <linux/proc_fs.h>
64#include <linux/ioport.h>
Ingo Molnar8ea02602007-07-16 09:46:31 +020065#include <linux/uaccess.h>
66#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070067#include <linux/mm.h>
68#include <linux/hugetlb.h>
69#include <linux/pagemap.h>
70#include <linux/swap.h>
71#include <linux/slab.h>
72#include <linux/smp.h>
73#include <linux/signal.h>
74#include <linux/highmem.h>
75#include <linux/file.h>
76#include <linux/times.h>
77#include <linux/cpuset.h>
Dipankar Sarma4fb3a532005-09-16 19:28:13 -070078#include <linux/rcupdate.h>
Shailabh Nagar25890452006-07-14 00:24:43 -070079#include <linux/delayacct.h>
Pavel Emelyanovb4888932007-10-18 23:40:14 -070080#include <linux/pid_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
Linus Torvalds1da177e2005-04-16 15:20:36 -070082#include <asm/pgtable.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070083#include <asm/processor.h>
84#include "internal.h"
85
86/* Gcc optimizes away "strlen(x)" for constant x */
87#define ADDBUF(buffer, string) \
88do { memcpy(buffer, string, strlen(string)); \
89 buffer += strlen(string); } while (0)
90
Ingo Molnar8ea02602007-07-16 09:46:31 +020091static inline char *task_name(struct task_struct *p, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070092{
93 int i;
Ingo Molnar8ea02602007-07-16 09:46:31 +020094 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 char tcomm[sizeof(p->comm)];
96
97 get_task_comm(tcomm, p);
98
99 ADDBUF(buf, "Name:\t");
100 name = tcomm;
101 i = sizeof(tcomm);
102 do {
103 unsigned char c = *name;
104 name++;
105 i--;
106 *buf = c;
107 if (!c)
108 break;
109 if (c == '\\') {
110 buf[1] = c;
111 buf += 2;
112 continue;
113 }
114 if (c == '\n') {
115 buf[0] = '\\';
116 buf[1] = 'n';
117 buf += 2;
118 continue;
119 }
120 buf++;
121 } while (i);
122 *buf = '\n';
123 return buf+1;
124}
125
126/*
127 * The task state array is a strange "bitmap" of
128 * reasons to sleep. Thus "running" is zero, and
129 * you can test for combinations of others with
130 * simple bit tests.
131 */
132static const char *task_state_array[] = {
133 "R (running)", /* 0 */
134 "S (sleeping)", /* 1 */
135 "D (disk sleep)", /* 2 */
136 "T (stopped)", /* 4 */
137 "T (tracing stop)", /* 8 */
138 "Z (zombie)", /* 16 */
139 "X (dead)" /* 32 */
140};
141
Ingo Molnar8ea02602007-07-16 09:46:31 +0200142static inline const char *get_task_state(struct task_struct *tsk)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143{
144 unsigned int state = (tsk->state & (TASK_RUNNING |
145 TASK_INTERRUPTIBLE |
146 TASK_UNINTERRUPTIBLE |
147 TASK_STOPPED |
148 TASK_TRACED)) |
Eugene Teo270f7222007-10-18 23:40:38 -0700149 tsk->exit_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 const char **p = &task_state_array[0];
151
152 while (state) {
153 p++;
154 state >>= 1;
155 }
156 return *p;
157}
158
Ingo Molnar8ea02602007-07-16 09:46:31 +0200159static inline char *task_state(struct task_struct *p, char *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160{
161 struct group_info *group_info;
162 int g;
Dipankar Sarmabadf1662005-09-09 13:04:10 -0700163 struct fdtable *fdt = NULL;
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700164 struct pid_namespace *ns;
165 pid_t ppid, tpid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700167 ns = current->nsproxy->pid_ns;
Oleg Nesterovb0fa9db2006-10-02 02:18:54 -0700168 rcu_read_lock();
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700169 ppid = pid_alive(p) ?
170 task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
171 tpid = pid_alive(p) && p->ptrace ?
172 task_ppid_nr_ns(rcu_dereference(p->parent), ns) : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 buffer += sprintf(buffer,
174 "State:\t%s\n"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 "Tgid:\t%d\n"
176 "Pid:\t%d\n"
177 "PPid:\t%d\n"
178 "TracerPid:\t%d\n"
179 "Uid:\t%d\t%d\t%d\t%d\n"
180 "Gid:\t%d\t%d\t%d\t%d\n",
181 get_task_state(p),
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700182 task_tgid_nr_ns(p, ns),
183 task_pid_nr_ns(p, ns),
184 ppid, tpid,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 p->uid, p->euid, p->suid, p->fsuid,
186 p->gid, p->egid, p->sgid, p->fsgid);
Oleg Nesterovb0fa9db2006-10-02 02:18:54 -0700187
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 task_lock(p);
Dipankar Sarmabadf1662005-09-09 13:04:10 -0700189 if (p->files)
190 fdt = files_fdtable(p->files);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 buffer += sprintf(buffer,
192 "FDSize:\t%d\n"
193 "Groups:\t",
Dipankar Sarmabadf1662005-09-09 13:04:10 -0700194 fdt ? fdt->max_fds : 0);
Dipankar Sarma4fb3a532005-09-16 19:28:13 -0700195 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
197 group_info = p->group_info;
198 get_group_info(group_info);
199 task_unlock(p);
200
Ingo Molnar8ea02602007-07-16 09:46:31 +0200201 for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++)
202 buffer += sprintf(buffer, "%d ", GROUP_AT(group_info, g));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 put_group_info(group_info);
204
205 buffer += sprintf(buffer, "\n");
206 return buffer;
207}
208
Ingo Molnar8ea02602007-07-16 09:46:31 +0200209static char *render_sigset_t(const char *header, sigset_t *set, char *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210{
211 int i, len;
212
213 len = strlen(header);
214 memcpy(buffer, header, len);
215 buffer += len;
216
217 i = _NSIG;
218 do {
219 int x = 0;
220
221 i -= 4;
222 if (sigismember(set, i+1)) x |= 1;
223 if (sigismember(set, i+2)) x |= 2;
224 if (sigismember(set, i+3)) x |= 4;
225 if (sigismember(set, i+4)) x |= 8;
226 *buffer++ = (x < 10 ? '0' : 'a' - 10) + x;
227 } while (i >= 4);
228
229 *buffer++ = '\n';
230 *buffer = 0;
231 return buffer;
232}
233
234static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
235 sigset_t *catch)
236{
237 struct k_sigaction *k;
238 int i;
239
240 k = p->sighand->action;
241 for (i = 1; i <= _NSIG; ++i, ++k) {
242 if (k->sa.sa_handler == SIG_IGN)
243 sigaddset(ign, i);
244 else if (k->sa.sa_handler != SIG_DFL)
245 sigaddset(catch, i);
246 }
247}
248
Ingo Molnar8ea02602007-07-16 09:46:31 +0200249static inline char *task_sig(struct task_struct *p, char *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250{
Oleg Nesterov5e6b3f42006-10-02 02:18:52 -0700251 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 sigset_t pending, shpending, blocked, ignored, caught;
253 int num_threads = 0;
254 unsigned long qsize = 0;
255 unsigned long qlim = 0;
256
257 sigemptyset(&pending);
258 sigemptyset(&shpending);
259 sigemptyset(&blocked);
260 sigemptyset(&ignored);
261 sigemptyset(&caught);
262
Oleg Nesterov5e6b3f42006-10-02 02:18:52 -0700263 rcu_read_lock();
264 if (lock_task_sighand(p, &flags)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 pending = p->pending.signal;
266 shpending = p->signal->shared_pending.signal;
267 blocked = p->blocked;
268 collect_sigign_sigcatch(p, &ignored, &caught);
269 num_threads = atomic_read(&p->signal->count);
270 qsize = atomic_read(&p->user->sigpending);
271 qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
Oleg Nesterov5e6b3f42006-10-02 02:18:52 -0700272 unlock_task_sighand(p, &flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 }
Oleg Nesterov5e6b3f42006-10-02 02:18:52 -0700274 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
276 buffer += sprintf(buffer, "Threads:\t%d\n", num_threads);
277 buffer += sprintf(buffer, "SigQ:\t%lu/%lu\n", qsize, qlim);
278
279 /* render them all */
280 buffer = render_sigset_t("SigPnd:\t", &pending, buffer);
281 buffer = render_sigset_t("ShdPnd:\t", &shpending, buffer);
282 buffer = render_sigset_t("SigBlk:\t", &blocked, buffer);
283 buffer = render_sigset_t("SigIgn:\t", &ignored, buffer);
284 buffer = render_sigset_t("SigCgt:\t", &caught, buffer);
285
286 return buffer;
287}
288
289static inline char *task_cap(struct task_struct *p, char *buffer)
290{
291 return buffer + sprintf(buffer, "CapInh:\t%016x\n"
292 "CapPrm:\t%016x\n"
293 "CapEff:\t%016x\n",
294 cap_t(p->cap_inheritable),
295 cap_t(p->cap_permitted),
296 cap_t(p->cap_effective));
297}
298
Maxim Uvarovb663a792007-07-15 23:40:48 -0700299static inline char *task_context_switch_counts(struct task_struct *p,
300 char *buffer)
301{
302 return buffer + sprintf(buffer, "voluntary_ctxt_switches:\t%lu\n"
303 "nonvoluntary_ctxt_switches:\t%lu\n",
304 p->nvcsw,
305 p->nivcsw);
306}
307
Ingo Molnar8ea02602007-07-16 09:46:31 +0200308int proc_pid_status(struct task_struct *task, char *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309{
Ingo Molnar8ea02602007-07-16 09:46:31 +0200310 char *orig = buffer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 struct mm_struct *mm = get_task_mm(task);
312
313 buffer = task_name(task, buffer);
314 buffer = task_state(task, buffer);
Ingo Molnar8ea02602007-07-16 09:46:31 +0200315
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 if (mm) {
317 buffer = task_mem(mm, buffer);
318 mmput(mm);
319 }
320 buffer = task_sig(task, buffer);
321 buffer = task_cap(task, buffer);
322 buffer = cpuset_task_status_allowed(task, buffer);
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800323#if defined(CONFIG_S390)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 buffer = task_show_regs(task, buffer);
325#endif
Maxim Uvarovb663a792007-07-15 23:40:48 -0700326 buffer = task_context_switch_counts(task, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 return buffer - orig;
328}
329
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200330/*
331 * Use precise platform statistics if available:
332 */
333#ifdef CONFIG_VIRT_CPU_ACCOUNTING
334static cputime_t task_utime(struct task_struct *p)
335{
336 return p->utime;
337}
338
339static cputime_t task_stime(struct task_struct *p)
340{
341 return p->stime;
342}
343#else
344static cputime_t task_utime(struct task_struct *p)
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200345{
346 clock_t utime = cputime_to_clock_t(p->utime),
347 total = utime + cputime_to_clock_t(p->stime);
348 u64 temp;
349
350 /*
351 * Use CFS's precise accounting:
352 */
353 temp = (u64)nsec_to_clock_t(p->se.sum_exec_runtime);
354
355 if (total) {
356 temp *= utime;
357 do_div(temp, total);
358 }
359 utime = (clock_t)temp;
360
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200361 return clock_t_to_cputime(utime);
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200362}
363
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200364static cputime_t task_stime(struct task_struct *p)
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200365{
Ingo Molnar5926c502007-07-16 09:46:30 +0200366 clock_t stime;
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200367
368 /*
369 * Use CFS's precise accounting. (we subtract utime from
370 * the total, to make sure the total observed by userspace
371 * grows monotonically - apps rely on that):
372 */
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200373 stime = nsec_to_clock_t(p->se.sum_exec_runtime) -
374 cputime_to_clock_t(task_utime(p));
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200375
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200376 return clock_t_to_cputime(stime);
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200377}
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200378#endif
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200379
Laurent Vivier9ac52312007-10-15 17:00:19 +0200380static cputime_t task_gtime(struct task_struct *p)
381{
382 return p->gtime;
383}
384
Ingo Molnar8ea02602007-07-16 09:46:31 +0200385static int do_task_stat(struct task_struct *task, char *buffer, int whole)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386{
387 unsigned long vsize, eip, esp, wchan = ~0UL;
388 long priority, nice;
389 int tty_pgrp = -1, tty_nr = 0;
390 sigset_t sigign, sigcatch;
391 char state;
392 int res;
Ingo Molnar8ea02602007-07-16 09:46:31 +0200393 pid_t ppid = 0, pgid = -1, sid = -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 int num_threads = 0;
395 struct mm_struct *mm;
396 unsigned long long start_time;
397 unsigned long cmin_flt = 0, cmaj_flt = 0;
398 unsigned long min_flt = 0, maj_flt = 0;
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200399 cputime_t cutime, cstime, utime, stime;
Laurent Vivier9ac52312007-10-15 17:00:19 +0200400 cputime_t cgtime, gtime;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 unsigned long rsslim = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 char tcomm[sizeof(task->comm)];
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700403 unsigned long flags;
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700404 struct pid_namespace *ns;
405
406 ns = current->nsproxy->pid_ns;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407
408 state = *get_task_state(task);
409 vsize = eip = esp = 0;
410 mm = get_task_mm(task);
411 if (mm) {
412 vsize = task_vsize(mm);
413 eip = KSTK_EIP(task);
414 esp = KSTK_ESP(task);
415 }
416
417 get_task_comm(tcomm, task);
418
419 sigemptyset(&sigign);
420 sigemptyset(&sigcatch);
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200421 cutime = cstime = utime = stime = cputime_zero;
Laurent Vivier9ac52312007-10-15 17:00:19 +0200422 cgtime = gtime = cputime_zero;
Alan Cox3cfd0882006-09-29 02:00:41 -0700423
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700424 rcu_read_lock();
425 if (lock_task_sighand(task, &flags)) {
426 struct signal_struct *sig = task->signal;
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700427
Oleg Nesterov91593502006-12-08 02:36:07 -0800428 if (sig->tty) {
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700429 tty_pgrp = pid_nr_ns(sig->tty->pgrp, ns);
Oleg Nesterov91593502006-12-08 02:36:07 -0800430 tty_nr = new_encode_dev(tty_devnum(sig->tty));
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700431 }
432
433 num_threads = atomic_read(&sig->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 collect_sigign_sigcatch(task, &sigign, &sigcatch);
435
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700436 cmin_flt = sig->cmin_flt;
437 cmaj_flt = sig->cmaj_flt;
438 cutime = sig->cutime;
439 cstime = sig->cstime;
Laurent Vivier9ac52312007-10-15 17:00:19 +0200440 cgtime = sig->cgtime;
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700441 rsslim = sig->rlim[RLIMIT_RSS].rlim_cur;
442
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 /* add up live thread stats at the group level */
444 if (whole) {
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700445 struct task_struct *t = task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 do {
447 min_flt += t->min_flt;
448 maj_flt += t->maj_flt;
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200449 utime = cputime_add(utime, task_utime(t));
450 stime = cputime_add(stime, task_stime(t));
Laurent Vivier9ac52312007-10-15 17:00:19 +0200451 gtime = cputime_add(gtime, task_gtime(t));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 t = next_thread(t);
453 } while (t != task);
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700454
455 min_flt += sig->min_flt;
456 maj_flt += sig->maj_flt;
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200457 utime = cputime_add(utime, sig->utime);
458 stime = cputime_add(stime, sig->stime);
Laurent Vivier9ac52312007-10-15 17:00:19 +0200459 gtime += cputime_add(gtime, sig->gtime);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 }
461
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700462 sid = task_session_nr_ns(task, ns);
463 pgid = task_pgrp_nr_ns(task, ns);
464 ppid = task_ppid_nr_ns(task, ns);
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700465
466 unlock_task_sighand(task, &flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 }
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700468 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469
Ingo Molnar8ea02602007-07-16 09:46:31 +0200470 if (!whole || num_threads < 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 wchan = get_wchan(task);
472 if (!whole) {
473 min_flt = task->min_flt;
474 maj_flt = task->maj_flt;
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200475 utime = task_utime(task);
476 stime = task_stime(task);
Laurent Vivier9ac52312007-10-15 17:00:19 +0200477 gtime = task_gtime(task);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 }
479
480 /* scale priority and nice values from timeslices to -20..20 */
481 /* to make it look like a "normal" Unix priority/nice value */
482 priority = task_prio(task);
483 nice = task_nice(task);
484
485 /* Temporary variable needed for gcc-2.96 */
486 /* convert timespec -> nsec*/
Tomas Janousek924b42d2007-07-15 23:39:42 -0700487 start_time =
488 (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC
489 + task->real_start_time.tv_nsec;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 /* convert nsec -> ticks */
491 start_time = nsec_to_clock_t(start_time);
492
Ingo Molnar8ea02602007-07-16 09:46:31 +0200493 res = sprintf(buffer, "%d (%s) %c %d %d %d %d %d %u %lu \
Roman Zippel4dee26b2006-03-26 01:38:10 -0800494%lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \
Laurent Vivier9ac52312007-10-15 17:00:19 +0200495%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld\n",
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700496 task_pid_nr_ns(task, ns),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 tcomm,
498 state,
499 ppid,
500 pgid,
501 sid,
502 tty_nr,
503 tty_pgrp,
504 task->flags,
505 min_flt,
506 cmin_flt,
507 maj_flt,
508 cmaj_flt,
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200509 cputime_to_clock_t(utime),
510 cputime_to_clock_t(stime),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 cputime_to_clock_t(cutime),
512 cputime_to_clock_t(cstime),
513 priority,
514 nice,
515 num_threads,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 start_time,
517 vsize,
Hugh Dickins42946212005-10-29 18:16:05 -0700518 mm ? get_mm_rss(mm) : 0,
Ingo Molnar8ea02602007-07-16 09:46:31 +0200519 rsslim,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 mm ? mm->start_code : 0,
521 mm ? mm->end_code : 0,
522 mm ? mm->start_stack : 0,
523 esp,
524 eip,
525 /* The signal information here is obsolete.
526 * It must be decimal for Linux 2.0 compatibility.
527 * Use /proc/#/status for real-time signals.
528 */
529 task->pending.signal.sig[0] & 0x7fffffffUL,
530 task->blocked.sig[0] & 0x7fffffffUL,
531 sigign .sig[0] & 0x7fffffffUL,
532 sigcatch .sig[0] & 0x7fffffffUL,
533 wchan,
534 0UL,
535 0UL,
536 task->exit_signal,
537 task_cpu(task),
538 task->rt_priority,
Shailabh Nagar25890452006-07-14 00:24:43 -0700539 task->policy,
Laurent Vivier9ac52312007-10-15 17:00:19 +0200540 (unsigned long long)delayacct_blkio_ticks(task),
541 cputime_to_clock_t(gtime),
542 cputime_to_clock_t(cgtime));
Ingo Molnar8ea02602007-07-16 09:46:31 +0200543 if (mm)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544 mmput(mm);
545 return res;
546}
547
Ingo Molnar8ea02602007-07-16 09:46:31 +0200548int proc_tid_stat(struct task_struct *task, char *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549{
550 return do_task_stat(task, buffer, 0);
551}
552
Ingo Molnar8ea02602007-07-16 09:46:31 +0200553int proc_tgid_stat(struct task_struct *task, char *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554{
555 return do_task_stat(task, buffer, 1);
556}
557
558int proc_pid_statm(struct task_struct *task, char *buffer)
559{
560 int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0;
561 struct mm_struct *mm = get_task_mm(task);
Ingo Molnar8ea02602007-07-16 09:46:31 +0200562
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 if (mm) {
564 size = task_statm(mm, &shared, &text, &data, &resident);
565 mmput(mm);
566 }
567
Ingo Molnar8ea02602007-07-16 09:46:31 +0200568 return sprintf(buffer, "%d %d %d %d %d %d %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 size, resident, shared, text, lib, data, 0);
570}