blob: 797d775e0354fca502c8ab439c4e986c8e27d237 [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>
Al Viro9f3acc32008-04-24 07:44:08 -040076#include <linux/fdtable.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070077#include <linux/times.h>
78#include <linux/cpuset.h>
Dipankar Sarma4fb3a532005-09-16 19:28:13 -070079#include <linux/rcupdate.h>
Shailabh Nagar25890452006-07-14 00:24:43 -070080#include <linux/delayacct.h>
Eric W. Biedermanee992742008-02-08 04:18:31 -080081#include <linux/seq_file.h>
Pavel Emelyanovb4888932007-10-18 23:40:14 -070082#include <linux/pid_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
Linus Torvalds1da177e2005-04-16 15:20:36 -070084#include <asm/pgtable.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070085#include <asm/processor.h>
86#include "internal.h"
87
88/* Gcc optimizes away "strlen(x)" for constant x */
89#define ADDBUF(buffer, string) \
90do { memcpy(buffer, string, strlen(string)); \
91 buffer += strlen(string); } while (0)
92
Eric W. Biedermandf5f8312008-02-08 04:18:33 -080093static inline void task_name(struct seq_file *m, struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -070094{
95 int i;
Eric W. Biedermandf5f8312008-02-08 04:18:33 -080096 char *buf, *end;
Ingo Molnar8ea02602007-07-16 09:46:31 +020097 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 char tcomm[sizeof(p->comm)];
99
100 get_task_comm(tcomm, p);
101
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800102 seq_printf(m, "Name:\t");
103 end = m->buf + m->size;
104 buf = m->buf + m->count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 name = tcomm;
106 i = sizeof(tcomm);
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800107 while (i && (buf < end)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 unsigned char c = *name;
109 name++;
110 i--;
111 *buf = c;
112 if (!c)
113 break;
114 if (c == '\\') {
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800115 buf++;
116 if (buf < end)
117 *buf++ = c;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 continue;
119 }
120 if (c == '\n') {
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800121 *buf++ = '\\';
122 if (buf < end)
123 *buf++ = 'n';
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 continue;
125 }
126 buf++;
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800127 }
128 m->count = buf - m->buf;
129 seq_printf(m, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130}
131
132/*
133 * The task state array is a strange "bitmap" of
134 * reasons to sleep. Thus "running" is zero, and
135 * you can test for combinations of others with
136 * simple bit tests.
137 */
138static const char *task_state_array[] = {
139 "R (running)", /* 0 */
140 "S (sleeping)", /* 1 */
141 "D (disk sleep)", /* 2 */
142 "T (stopped)", /* 4 */
143 "T (tracing stop)", /* 8 */
144 "Z (zombie)", /* 16 */
145 "X (dead)" /* 32 */
146};
147
Ingo Molnar8ea02602007-07-16 09:46:31 +0200148static inline const char *get_task_state(struct task_struct *tsk)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149{
Matthew Wilcox1587e2b2007-12-06 11:03:36 -0500150 unsigned int state = (tsk->state & TASK_REPORT) | tsk->exit_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 const char **p = &task_state_array[0];
152
153 while (state) {
154 p++;
155 state >>= 1;
156 }
157 return *p;
158}
159
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800160static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
161 struct pid *pid, struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162{
163 struct group_info *group_info;
164 int g;
Dipankar Sarmabadf1662005-09-09 13:04:10 -0700165 struct fdtable *fdt = NULL;
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700166 pid_t ppid, tpid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167
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 ?
Roland McGrath84427ea2008-01-10 12:52:04 -0800172 task_pid_nr_ns(rcu_dereference(p->parent), ns) : 0;
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800173 seq_printf(m,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 "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),
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800183 pid_nr_ns(pid, ns),
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700184 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);
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800191 seq_printf(m,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 "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++)
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800202 seq_printf(m, "%d ", GROUP_AT(group_info, g));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 put_group_info(group_info);
204
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800205 seq_printf(m, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206}
207
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800208static void render_sigset_t(struct seq_file *m, const char *header,
209 sigset_t *set)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210{
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800211 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800213 seq_printf(m, "%s", header);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
215 i = _NSIG;
216 do {
217 int x = 0;
218
219 i -= 4;
220 if (sigismember(set, i+1)) x |= 1;
221 if (sigismember(set, i+2)) x |= 2;
222 if (sigismember(set, i+3)) x |= 4;
223 if (sigismember(set, i+4)) x |= 8;
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800224 seq_printf(m, "%x", x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 } while (i >= 4);
226
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800227 seq_printf(m, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228}
229
230static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
231 sigset_t *catch)
232{
233 struct k_sigaction *k;
234 int i;
235
236 k = p->sighand->action;
237 for (i = 1; i <= _NSIG; ++i, ++k) {
238 if (k->sa.sa_handler == SIG_IGN)
239 sigaddset(ign, i);
240 else if (k->sa.sa_handler != SIG_DFL)
241 sigaddset(catch, i);
242 }
243}
244
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800245static inline void task_sig(struct seq_file *m, struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246{
Oleg Nesterov5e6b3f42006-10-02 02:18:52 -0700247 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 sigset_t pending, shpending, blocked, ignored, caught;
249 int num_threads = 0;
250 unsigned long qsize = 0;
251 unsigned long qlim = 0;
252
253 sigemptyset(&pending);
254 sigemptyset(&shpending);
255 sigemptyset(&blocked);
256 sigemptyset(&ignored);
257 sigemptyset(&caught);
258
Oleg Nesterov5e6b3f42006-10-02 02:18:52 -0700259 rcu_read_lock();
260 if (lock_task_sighand(p, &flags)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 pending = p->pending.signal;
262 shpending = p->signal->shared_pending.signal;
263 blocked = p->blocked;
264 collect_sigign_sigcatch(p, &ignored, &caught);
265 num_threads = atomic_read(&p->signal->count);
266 qsize = atomic_read(&p->user->sigpending);
267 qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
Oleg Nesterov5e6b3f42006-10-02 02:18:52 -0700268 unlock_task_sighand(p, &flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 }
Oleg Nesterov5e6b3f42006-10-02 02:18:52 -0700270 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800272 seq_printf(m, "Threads:\t%d\n", num_threads);
273 seq_printf(m, "SigQ:\t%lu/%lu\n", qsize, qlim);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
275 /* render them all */
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800276 render_sigset_t(m, "SigPnd:\t", &pending);
277 render_sigset_t(m, "ShdPnd:\t", &shpending);
278 render_sigset_t(m, "SigBlk:\t", &blocked);
279 render_sigset_t(m, "SigIgn:\t", &ignored);
280 render_sigset_t(m, "SigCgt:\t", &caught);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281}
282
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800283static void render_cap_t(struct seq_file *m, const char *header,
284 kernel_cap_t *a)
Andrew Morgane338d262008-02-04 22:29:42 -0800285{
286 unsigned __capi;
287
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800288 seq_printf(m, "%s", header);
Andrew Morgane338d262008-02-04 22:29:42 -0800289 CAP_FOR_EACH_U32(__capi) {
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800290 seq_printf(m, "%08x",
Andrew G. Morganca05a992008-05-27 22:05:17 -0700291 a->cap[(_KERNEL_CAPABILITY_U32S-1) - __capi]);
Andrew Morgane338d262008-02-04 22:29:42 -0800292 }
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800293 seq_printf(m, "\n");
Andrew Morgane338d262008-02-04 22:29:42 -0800294}
295
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800296static inline void task_cap(struct seq_file *m, struct task_struct *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297{
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800298 render_cap_t(m, "CapInh:\t", &p->cap_inheritable);
299 render_cap_t(m, "CapPrm:\t", &p->cap_permitted);
300 render_cap_t(m, "CapEff:\t", &p->cap_effective);
Serge E. Hallyn289f8e22008-05-12 14:02:13 -0700301 render_cap_t(m, "CapBnd:\t", &p->cap_bset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302}
303
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800304static inline void task_context_switch_counts(struct seq_file *m,
305 struct task_struct *p)
Maxim Uvarovb663a792007-07-15 23:40:48 -0700306{
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800307 seq_printf(m, "voluntary_ctxt_switches:\t%lu\n"
308 "nonvoluntary_ctxt_switches:\t%lu\n",
309 p->nvcsw,
310 p->nivcsw);
Maxim Uvarovb663a792007-07-15 23:40:48 -0700311}
312
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800313int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
314 struct pid *pid, struct task_struct *task)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 struct mm_struct *mm = get_task_mm(task);
317
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800318 task_name(m, task);
319 task_state(m, ns, pid, task);
Ingo Molnar8ea02602007-07-16 09:46:31 +0200320
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 if (mm) {
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800322 task_mem(m, mm);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 mmput(mm);
324 }
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800325 task_sig(m, task);
326 task_cap(m, task);
327 cpuset_task_status_allowed(m, task);
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800328#if defined(CONFIG_S390)
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800329 task_show_regs(m, task);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330#endif
Eric W. Biedermandf5f8312008-02-08 04:18:33 -0800331 task_context_switch_counts(m, task);
332 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333}
334
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200335/*
336 * Use precise platform statistics if available:
337 */
338#ifdef CONFIG_VIRT_CPU_ACCOUNTING
339static cputime_t task_utime(struct task_struct *p)
340{
341 return p->utime;
342}
343
344static cputime_t task_stime(struct task_struct *p)
345{
346 return p->stime;
347}
348#else
349static cputime_t task_utime(struct task_struct *p)
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200350{
351 clock_t utime = cputime_to_clock_t(p->utime),
352 total = utime + cputime_to_clock_t(p->stime);
353 u64 temp;
354
355 /*
356 * Use CFS's precise accounting:
357 */
358 temp = (u64)nsec_to_clock_t(p->se.sum_exec_runtime);
359
360 if (total) {
361 temp *= utime;
362 do_div(temp, total);
363 }
364 utime = (clock_t)temp;
365
Peter Zijlstra73a2bcb2007-10-29 21:18:11 +0100366 p->prev_utime = max(p->prev_utime, clock_t_to_cputime(utime));
367 return p->prev_utime;
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200368}
369
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200370static cputime_t task_stime(struct task_struct *p)
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200371{
Ingo Molnar5926c502007-07-16 09:46:30 +0200372 clock_t stime;
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200373
374 /*
375 * Use CFS's precise accounting. (we subtract utime from
376 * the total, to make sure the total observed by userspace
377 * grows monotonically - apps rely on that):
378 */
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200379 stime = nsec_to_clock_t(p->se.sum_exec_runtime) -
380 cputime_to_clock_t(task_utime(p));
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200381
Ingo Molnar08e45702007-11-26 21:21:49 +0100382 if (stime >= 0)
383 p->prev_stime = max(p->prev_stime, clock_t_to_cputime(stime));
384
Balbir Singh93018992007-10-30 00:26:32 +0100385 return p->prev_stime;
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200386}
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200387#endif
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200388
Laurent Vivier9ac52312007-10-15 17:00:19 +0200389static cputime_t task_gtime(struct task_struct *p)
390{
391 return p->gtime;
392}
393
Eric W. Biedermanee992742008-02-08 04:18:31 -0800394static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
395 struct pid *pid, struct task_struct *task, int whole)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396{
397 unsigned long vsize, eip, esp, wchan = ~0UL;
398 long priority, nice;
399 int tty_pgrp = -1, tty_nr = 0;
400 sigset_t sigign, sigcatch;
401 char state;
Ingo Molnar8ea02602007-07-16 09:46:31 +0200402 pid_t ppid = 0, pgid = -1, sid = -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 int num_threads = 0;
404 struct mm_struct *mm;
405 unsigned long long start_time;
406 unsigned long cmin_flt = 0, cmaj_flt = 0;
407 unsigned long min_flt = 0, maj_flt = 0;
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200408 cputime_t cutime, cstime, utime, stime;
Laurent Vivier9ac52312007-10-15 17:00:19 +0200409 cputime_t cgtime, gtime;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 unsigned long rsslim = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 char tcomm[sizeof(task->comm)];
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700412 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413
414 state = *get_task_state(task);
415 vsize = eip = esp = 0;
416 mm = get_task_mm(task);
417 if (mm) {
418 vsize = task_vsize(mm);
419 eip = KSTK_EIP(task);
420 esp = KSTK_ESP(task);
421 }
422
423 get_task_comm(tcomm, task);
424
425 sigemptyset(&sigign);
426 sigemptyset(&sigcatch);
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200427 cutime = cstime = utime = stime = cputime_zero;
Laurent Vivier9ac52312007-10-15 17:00:19 +0200428 cgtime = gtime = cputime_zero;
Alan Cox3cfd0882006-09-29 02:00:41 -0700429
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700430 if (lock_task_sighand(task, &flags)) {
431 struct signal_struct *sig = task->signal;
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700432
Oleg Nesterov91593502006-12-08 02:36:07 -0800433 if (sig->tty) {
Alan Cox5d0fdf12008-04-30 00:53:31 -0700434 struct pid *pgrp = tty_get_pgrp(sig->tty);
435 tty_pgrp = pid_nr_ns(pgrp, ns);
436 put_pid(pgrp);
Oleg Nesterov91593502006-12-08 02:36:07 -0800437 tty_nr = new_encode_dev(tty_devnum(sig->tty));
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700438 }
439
440 num_threads = atomic_read(&sig->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 collect_sigign_sigcatch(task, &sigign, &sigcatch);
442
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700443 cmin_flt = sig->cmin_flt;
444 cmaj_flt = sig->cmaj_flt;
445 cutime = sig->cutime;
446 cstime = sig->cstime;
Laurent Vivier9ac52312007-10-15 17:00:19 +0200447 cgtime = sig->cgtime;
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700448 rsslim = sig->rlim[RLIMIT_RSS].rlim_cur;
449
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 /* add up live thread stats at the group level */
451 if (whole) {
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700452 struct task_struct *t = task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 do {
454 min_flt += t->min_flt;
455 maj_flt += t->maj_flt;
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200456 utime = cputime_add(utime, task_utime(t));
457 stime = cputime_add(stime, task_stime(t));
Laurent Vivier9ac52312007-10-15 17:00:19 +0200458 gtime = cputime_add(gtime, task_gtime(t));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 t = next_thread(t);
460 } while (t != task);
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700461
462 min_flt += sig->min_flt;
463 maj_flt += sig->maj_flt;
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200464 utime = cputime_add(utime, sig->utime);
465 stime = cputime_add(stime, sig->stime);
Christian Borntraegerf9e26292007-10-19 20:52:40 +0200466 gtime = cputime_add(gtime, sig->gtime);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 }
468
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700469 sid = task_session_nr_ns(task, ns);
Oleg Nesterova98fdce2008-01-15 00:02:37 +0300470 ppid = task_tgid_nr_ns(task->real_parent, ns);
Pavel Emelyanovb4888932007-10-18 23:40:14 -0700471 pgid = task_pgrp_nr_ns(task, ns);
Oleg Nesterova593d6e2006-10-02 02:18:53 -0700472
473 unlock_task_sighand(task, &flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
Ingo Molnar8ea02602007-07-16 09:46:31 +0200476 if (!whole || num_threads < 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 wchan = get_wchan(task);
478 if (!whole) {
479 min_flt = task->min_flt;
480 maj_flt = task->maj_flt;
Ingo Molnarb27f03d2007-07-09 18:51:59 +0200481 utime = task_utime(task);
482 stime = task_stime(task);
Laurent Vivier9ac52312007-10-15 17:00:19 +0200483 gtime = task_gtime(task);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 }
485
486 /* scale priority and nice values from timeslices to -20..20 */
487 /* to make it look like a "normal" Unix priority/nice value */
488 priority = task_prio(task);
489 nice = task_nice(task);
490
491 /* Temporary variable needed for gcc-2.96 */
492 /* convert timespec -> nsec*/
Tomas Janousek924b42d2007-07-15 23:39:42 -0700493 start_time =
494 (unsigned long long)task->real_start_time.tv_sec * NSEC_PER_SEC
495 + task->real_start_time.tv_nsec;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 /* convert nsec -> ticks */
497 start_time = nsec_to_clock_t(start_time);
498
Eric W. Biedermanee992742008-02-08 04:18:31 -0800499 seq_printf(m, "%d (%s) %c %d %d %d %d %d %u %lu \
Roman Zippel4dee26b2006-03-26 01:38:10 -0800500%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 +0200501%lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld\n",
Eric W. Biedermanee992742008-02-08 04:18:31 -0800502 pid_nr_ns(pid, ns),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 tcomm,
504 state,
505 ppid,
506 pgid,
507 sid,
508 tty_nr,
509 tty_pgrp,
510 task->flags,
511 min_flt,
512 cmin_flt,
513 maj_flt,
514 cmaj_flt,
Christian Borntraegerefe567f2007-08-23 15:18:02 +0200515 cputime_to_clock_t(utime),
516 cputime_to_clock_t(stime),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517 cputime_to_clock_t(cutime),
518 cputime_to_clock_t(cstime),
519 priority,
520 nice,
521 num_threads,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 start_time,
523 vsize,
Hugh Dickins42946212005-10-29 18:16:05 -0700524 mm ? get_mm_rss(mm) : 0,
Ingo Molnar8ea02602007-07-16 09:46:31 +0200525 rsslim,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 mm ? mm->start_code : 0,
527 mm ? mm->end_code : 0,
528 mm ? mm->start_stack : 0,
529 esp,
530 eip,
531 /* The signal information here is obsolete.
532 * It must be decimal for Linux 2.0 compatibility.
533 * Use /proc/#/status for real-time signals.
534 */
535 task->pending.signal.sig[0] & 0x7fffffffUL,
536 task->blocked.sig[0] & 0x7fffffffUL,
537 sigign .sig[0] & 0x7fffffffUL,
538 sigcatch .sig[0] & 0x7fffffffUL,
539 wchan,
540 0UL,
541 0UL,
542 task->exit_signal,
543 task_cpu(task),
544 task->rt_priority,
Shailabh Nagar25890452006-07-14 00:24:43 -0700545 task->policy,
Laurent Vivier9ac52312007-10-15 17:00:19 +0200546 (unsigned long long)delayacct_blkio_ticks(task),
547 cputime_to_clock_t(gtime),
548 cputime_to_clock_t(cgtime));
Ingo Molnar8ea02602007-07-16 09:46:31 +0200549 if (mm)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 mmput(mm);
Eric W. Biedermanee992742008-02-08 04:18:31 -0800551 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552}
553
Eric W. Biedermanee992742008-02-08 04:18:31 -0800554int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
555 struct pid *pid, struct task_struct *task)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556{
Eric W. Biedermanee992742008-02-08 04:18:31 -0800557 return do_task_stat(m, ns, pid, task, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558}
559
Eric W. Biedermanee992742008-02-08 04:18:31 -0800560int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
561 struct pid *pid, struct task_struct *task)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562{
Eric W. Biedermanee992742008-02-08 04:18:31 -0800563 return do_task_stat(m, ns, pid, task, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564}
565
Eric W. Biedermana56d3fc2008-02-08 04:18:32 -0800566int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
567 struct pid *pid, struct task_struct *task)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568{
569 int size = 0, resident = 0, shared = 0, text = 0, lib = 0, data = 0;
570 struct mm_struct *mm = get_task_mm(task);
Ingo Molnar8ea02602007-07-16 09:46:31 +0200571
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 if (mm) {
573 size = task_statm(mm, &shared, &text, &data, &resident);
574 mmput(mm);
575 }
Eric W. Biedermana56d3fc2008-02-08 04:18:32 -0800576 seq_printf(m, "%d %d %d %d %d %d %d\n",
577 size, resident, shared, text, lib, data, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578
Eric W. Biedermana56d3fc2008-02-08 04:18:32 -0800579 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580}