kernel/sched/debug.c

   1 /*
   2  * kernel/sched/debug.c
   3  *
   4  * Print the CFS rbtree
   5  *
   6  * Copyright(C) 2007, Red Hat, Inc., Ingo Molnar
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/proc_fs.h>
  14 #include <linux/sched.h>
  15 #include <linux/seq_file.h>
  16 #include <linux/kallsyms.h>
  17 #include <linux/utsname.h>
  18 #include <linux/mempolicy.h>
  19
  20 #include "sched.h"
  21
  22 static DEFINE_SPINLOCK(sched_debug_lock);
  23
  24 /*
  25  * This allows printing both to /proc/sched_debug and
  26  * to the console
  27  */
  28 #define SEQ_printf(m, x...)                     \
  29  do {                                           \
  30         if (m)                                  \
  31                 seq_printf(m, x);               \
  32         else                                    \
  33                 printk(x);                      \
  34  } while (0)
  35
  36 /*
  37  * Ease the printing of nsec fields:
  38  */
  39 static long long nsec_high(unsigned long long nsec)
  40 {
  41         if ((long long)nsec < 0) {
  42                 nsec = -nsec;
  43                 do_div(nsec, 1000000);
  44                 return -nsec;
  45         }
  46         do_div(nsec, 1000000);
  47
  48         return nsec;
  49 }
  50
  51 static unsigned long nsec_low(unsigned long long nsec)
  52 {
  53         if ((long long)nsec < 0)
  54                 nsec = -nsec;
  55
  56         return do_div(nsec, 1000000);
  57 }
  58
  59 #define SPLIT_NS(x) nsec_high(x), nsec_low(x)
  60
  61 #ifdef CONFIG_FAIR_GROUP_SCHED
  62 static void print_cfs_group_stats(struct seq_file *m, int cpu, struct task_group *tg)
  63 {
  64         struct sched_entity *se = tg->se[cpu];
  65
  66 #define P(F) \
  67         SEQ_printf(m, "  .%-30s: %lld\n", #F, (long long)F)
  68 #define PN(F) \
  69         SEQ_printf(m, "  .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)F))
  70
  71         if (!se) {
  72                 struct sched_avg *avg = &cpu_rq(cpu)->avg;
  73                 P(avg->runnable_avg_sum);
  74                 P(avg->runnable_avg_period);
  75                 return;
  76         }
  77
  78
  79         PN(se->exec_start);
  80         PN(se->vruntime);
  81         PN(se->sum_exec_runtime);
  82 #ifdef CONFIG_SCHEDSTATS
  83         PN(se->statistics.wait_start);
  84         PN(se->statistics.sleep_start);
  85         PN(se->statistics.block_start);
  86         PN(se->statistics.sleep_max);
  87         PN(se->statistics.block_max);
  88         PN(se->statistics.exec_max);
  89         PN(se->statistics.slice_max);
  90         PN(se->statistics.wait_max);
  91         PN(se->statistics.wait_sum);
  92         P(se->statistics.wait_count);
  93 #endif
  94         P(se->load.weight);
  95 #ifdef CONFIG_SMP
  96         P(se->avg.runnable_avg_sum);
  97         P(se->avg.runnable_avg_period);
  98         P(se->avg.load_avg_contrib);
  99         P(se->avg.decay_count);
 100 #endif
 101 #undef PN
 102 #undef P
 103 }
 104 #endif
 105
 106 #ifdef CONFIG_CGROUP_SCHED
 107 static char group_path[PATH_MAX];
 108
 109 static char *task_group_path(struct task_group *tg)
 110 {
 111         if (autogroup_path(tg, group_path, PATH_MAX))
 112                 return group_path;
 113
 114         return cgroup_path(tg->css.cgroup, group_path, PATH_MAX);
 115 }
 116 #endif
 117
 118 static void
 119 print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
 120 {
 121         if (rq->curr == p)
 122                 SEQ_printf(m, "R");
 123         else
 124                 SEQ_printf(m, " ");
 125
 126         SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ",
 127                 p->comm, task_pid_nr(p),
 128                 SPLIT_NS(p->se.vruntime),
 129                 (long long)(p->nvcsw + p->nivcsw),
 130                 p->prio);
 131 #ifdef CONFIG_SCHEDSTATS
 132         SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
 133                 SPLIT_NS(p->se.vruntime),
 134                 SPLIT_NS(p->se.sum_exec_runtime),
 135                 SPLIT_NS(p->se.statistics.sum_sleep_runtime));
 136 #else
 137         SEQ_printf(m, "%15Ld %15Ld %15Ld.%06ld %15Ld.%06ld %15Ld.%06ld",
 138                 0LL, 0LL, 0LL, 0L, 0LL, 0L, 0LL, 0L);
 139 #endif
 140 #ifdef CONFIG_NUMA_BALANCING
 141         SEQ_printf(m, " %d", task_node(p));
 142 #endif
 143 #ifdef CONFIG_CGROUP_SCHED
 144         SEQ_printf(m, " %s", task_group_path(task_group(p)));
 145 #endif
 146
 147         SEQ_printf(m, "\n");
 148 }
 149
 150 static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu)
 151 {
 152         struct task_struct *g, *p;
 153
 154         SEQ_printf(m,
 155         "\nrunnable tasks:\n"
 156         "            task   PID         tree-key  switches  prio"
 157         "     exec-runtime         sum-exec        sum-sleep\n"
 158         "------------------------------------------------------"
 159         "----------------------------------------------------\n");
 160
 161         rcu_read_lock();
 162         for_each_process_thread(g, p) {
 163                 if (task_cpu(p) != rq_cpu)
 164                         continue;
 165
 166                 print_task(m, rq, p);
 167         }
 168         rcu_read_unlock();
 169 }
 170
 171 void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 172 {
 173         s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
 174                 spread, rq0_min_vruntime, spread0;
 175         struct rq *rq = cpu_rq(cpu);
 176         struct sched_entity *last;
 177         unsigned long flags;
 178
 179 #ifdef CONFIG_FAIR_GROUP_SCHED
 180         SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, task_group_path(cfs_rq->tg));
 181 #else
 182         SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
 183 #endif
 184         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "exec_clock",
 185                         SPLIT_NS(cfs_rq->exec_clock));
 186
 187         raw_spin_lock_irqsave(&rq->lock, flags);
 188         if (cfs_rq->rb_leftmost)
 189                 MIN_vruntime = (__pick_first_entity(cfs_rq))->vruntime;
 190         last = __pick_last_entity(cfs_rq);
 191         if (last)
 192                 max_vruntime = last->vruntime;
 193         min_vruntime = cfs_rq->min_vruntime;
 194         rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime;
 195         raw_spin_unlock_irqrestore(&rq->lock, flags);
 196         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "MIN_vruntime",
 197                         SPLIT_NS(MIN_vruntime));
 198         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "min_vruntime",
 199                         SPLIT_NS(min_vruntime));
 200         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "max_vruntime",
 201                         SPLIT_NS(max_vruntime));
 202         spread = max_vruntime - MIN_vruntime;
 203         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "spread",
 204                         SPLIT_NS(spread));
 205         spread0 = min_vruntime - rq0_min_vruntime;
 206         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "spread0",
 207                         SPLIT_NS(spread0));
 208         SEQ_printf(m, "  .%-30s: %d\n", "nr_spread_over",
 209                         cfs_rq->nr_spread_over);
 210         SEQ_printf(m, "  .%-30s: %d\n", "nr_running", cfs_rq->nr_running);
 211         SEQ_printf(m, "  .%-30s: %ld\n", "load", cfs_rq->load.weight);
 212 #ifdef CONFIG_SMP
 213         SEQ_printf(m, "  .%-30s: %ld\n", "runnable_load_avg",
 214                         cfs_rq->runnable_load_avg);
 215         SEQ_printf(m, "  .%-30s: %ld\n", "blocked_load_avg",
 216                         cfs_rq->blocked_load_avg);
 217 #ifdef CONFIG_FAIR_GROUP_SCHED
 218         SEQ_printf(m, "  .%-30s: %ld\n", "tg_load_contrib",
 219                         cfs_rq->tg_load_contrib);
 220         SEQ_printf(m, "  .%-30s: %d\n", "tg_runnable_contrib",
 221                         cfs_rq->tg_runnable_contrib);
 222         SEQ_printf(m, "  .%-30s: %ld\n", "tg_load_avg",
 223                         atomic_long_read(&cfs_rq->tg->load_avg));
 224         SEQ_printf(m, "  .%-30s: %d\n", "tg->runnable_avg",
 225                         atomic_read(&cfs_rq->tg->runnable_avg));
 226 #endif
 227 #endif
 228 #ifdef CONFIG_CFS_BANDWIDTH
 229         SEQ_printf(m, "  .%-30s: %d\n", "tg->cfs_bandwidth.timer_active",
 230                         cfs_rq->tg->cfs_bandwidth.timer_active);
 231         SEQ_printf(m, "  .%-30s: %d\n", "throttled",
 232                         cfs_rq->throttled);
 233         SEQ_printf(m, "  .%-30s: %d\n", "throttle_count",
 234                         cfs_rq->throttle_count);
 235 #endif
 236
 237 #ifdef CONFIG_FAIR_GROUP_SCHED
 238         print_cfs_group_stats(m, cpu, cfs_rq->tg);
 239 #endif
 240 }
 241
 242 void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
 243 {
 244 #ifdef CONFIG_RT_GROUP_SCHED
 245         SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, task_group_path(rt_rq->tg));
 246 #else
 247         SEQ_printf(m, "\nrt_rq[%d]:\n", cpu);
 248 #endif
 249
 250 #define P(x) \
 251         SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(rt_rq->x))
 252 #define PN(x) \
 253         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x))
 254
 255         P(rt_nr_running);
 256         P(rt_throttled);
 257         PN(rt_time);
 258         PN(rt_runtime);
 259
 260 #undef PN
 261 #undef P
 262 }
 263
 264 void print_dl_rq(struct seq_file *m, int cpu, struct dl_rq *dl_rq)
 265 {
 266         SEQ_printf(m, "\ndl_rq[%d]:\n", cpu);
 267         SEQ_printf(m, "  .%-30s: %ld\n", "dl_nr_running", dl_rq->dl_nr_running);
 268 }
 269
 270 extern __read_mostly int sched_clock_running;
 271
 272 static void print_cpu(struct seq_file *m, int cpu)
 273 {
 274         struct rq *rq = cpu_rq(cpu);
 275         unsigned long flags;
 276
 277 #ifdef CONFIG_X86
 278         {
 279                 unsigned int freq = cpu_khz ? : 1;
 280
 281                 SEQ_printf(m, "cpu#%d, %u.%03u MHz\n",
 282                            cpu, freq / 1000, (freq % 1000));
 283         }
 284 #else
 285         SEQ_printf(m, "cpu#%d\n", cpu);
 286 #endif
 287
 288 #define P(x)                                                            \
 289 do {                                                                    \
 290         if (sizeof(rq->x) == 4)                                         \
 291                 SEQ_printf(m, "  .%-30s: %ld\n", #x, (long)(rq->x));    \
 292         else                                                            \
 293                 SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(rq->x));\
 294 } while (0)
 295
 296 #define PN(x) \
 297         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x))
 298
 299         P(nr_running);
 300         SEQ_printf(m, "  .%-30s: %lu\n", "load",
 301                    rq->load.weight);
 302         P(nr_switches);
 303         P(nr_load_updates);
 304         P(nr_uninterruptible);
 305         PN(next_balance);
 306         SEQ_printf(m, "  .%-30s: %ld\n", "curr->pid", (long)(task_pid_nr(rq->curr)));
 307         PN(clock);
 308         PN(clock_task);
 309         P(cpu_load[0]);
 310         P(cpu_load[1]);
 311         P(cpu_load[2]);
 312         P(cpu_load[3]);
 313         P(cpu_load[4]);
 314 #undef P
 315 #undef PN
 316
 317 #ifdef CONFIG_SCHEDSTATS
 318 #define P(n) SEQ_printf(m, "  .%-30s: %d\n", #n, rq->n);
 319 #define P64(n) SEQ_printf(m, "  .%-30s: %Ld\n", #n, rq->n);
 320
 321         P(yld_count);
 322
 323         P(sched_count);
 324         P(sched_goidle);
 325 #ifdef CONFIG_SMP
 326         P64(avg_idle);
 327         P64(max_idle_balance_cost);
 328 #endif
 329
 330         P(ttwu_count);
 331         P(ttwu_local);
 332
 333 #undef P
 334 #undef P64
 335 #endif
 336         spin_lock_irqsave(&sched_debug_lock, flags);
 337         print_cfs_stats(m, cpu);
 338         print_rt_stats(m, cpu);
 339         print_dl_stats(m, cpu);
 340
 341         print_rq(m, rq, cpu);
 342         spin_unlock_irqrestore(&sched_debug_lock, flags);
 343         SEQ_printf(m, "\n");
 344 }
 345
 346 static const char *sched_tunable_scaling_names[] = {
 347         "none",
 348         "logaritmic",
 349         "linear"
 350 };
 351
 352 static void sched_debug_header(struct seq_file *m)
 353 {
 354         u64 ktime, sched_clk, cpu_clk;
 355         unsigned long flags;
 356
 357         local_irq_save(flags);
 358         ktime = ktime_to_ns(ktime_get());
 359         sched_clk = sched_clock();
 360         cpu_clk = local_clock();
 361         local_irq_restore(flags);
 362
 363         SEQ_printf(m, "Sched Debug Version: v0.11, %s %.*s\n",
 364                 init_utsname()->release,
 365                 (int)strcspn(init_utsname()->version, " "),
 366                 init_utsname()->version);
 367
 368 #define P(x) \
 369         SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x))
 370 #define PN(x) \
 371         SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
 372         PN(ktime);
 373         PN(sched_clk);
 374         PN(cpu_clk);
 375         P(jiffies);
 376 #ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
 377         P(sched_clock_stable());
 378 #endif
 379 #undef PN
 380 #undef P
 381
 382         SEQ_printf(m, "\n");
 383         SEQ_printf(m, "sysctl_sched\n");
 384
 385 #define P(x) \
 386         SEQ_printf(m, "  .%-40s: %Ld\n", #x, (long long)(x))
 387 #define PN(x) \
 388         SEQ_printf(m, "  .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
 389         PN(sysctl_sched_latency);
 390         PN(sysctl_sched_min_granularity);
 391         PN(sysctl_sched_wakeup_granularity);
 392         P(sysctl_sched_child_runs_first);
 393         P(sysctl_sched_features);
 394 #undef PN
 395 #undef P
 396
 397         SEQ_printf(m, "  .%-40s: %d (%s)\n",
 398                 "sysctl_sched_tunable_scaling",
 399                 sysctl_sched_tunable_scaling,
 400                 sched_tunable_scaling_names[sysctl_sched_tunable_scaling]);
 401         SEQ_printf(m, "\n");
 402 }
 403
 404 static int sched_debug_show(struct seq_file *m, void *v)
 405 {
 406         int cpu = (unsigned long)(v - 2);
 407
 408         if (cpu != -1)
 409                 print_cpu(m, cpu);
 410         else
 411                 sched_debug_header(m);
 412
 413         return 0;
 414 }
 415
 416 void sysrq_sched_debug_show(void)
 417 {
 418         int cpu;
 419
 420         sched_debug_header(NULL);
 421         for_each_online_cpu(cpu)
 422                 print_cpu(NULL, cpu);
 423
 424 }
 425
 426 /*
 427  * This itererator needs some explanation.
 428  * It returns 1 for the header position.
 429  * This means 2 is cpu 0.
 430  * In a hotplugged system some cpus, including cpu 0, may be missing so we have
 431  * to use cpumask_* to iterate over the cpus.
 432  */
 433 static void *sched_debug_start(struct seq_file *file, loff_t *offset)
 434 {
 435         unsigned long n = *offset;
 436
 437         if (n == 0)
 438                 return (void *) 1;
 439
 440         n--;
 441
 442         if (n > 0)
 443                 n = cpumask_next(n - 1, cpu_online_mask);
 444         else
 445                 n = cpumask_first(cpu_online_mask);
 446
 447         *offset = n + 1;
 448
 449         if (n < nr_cpu_ids)
 450                 return (void *)(unsigned long)(n + 2);
 451         return NULL;
 452 }
 453
 454 static void *sched_debug_next(struct seq_file *file, void *data, loff_t *offset)
 455 {
 456         (*offset)++;
 457         return sched_debug_start(file, offset);
 458 }
 459
 460 static void sched_debug_stop(struct seq_file *file, void *data)
 461 {
 462 }
 463
 464 static const struct seq_operations sched_debug_sops = {
 465         .start = sched_debug_start,
 466         .next = sched_debug_next,
 467         .stop = sched_debug_stop,
 468         .show = sched_debug_show,
 469 };
 470
 471 static int sched_debug_release(struct inode *inode, struct file *file)
 472 {
 473         seq_release(inode, file);
 474
 475         return 0;
 476 }
 477
 478 static int sched_debug_open(struct inode *inode, struct file *filp)
 479 {
 480         int ret = 0;
 481
 482         ret = seq_open(filp, &sched_debug_sops);
 483
 484         return ret;
 485 }
 486
 487 static const struct file_operations sched_debug_fops = {
 488         .open           = sched_debug_open,
 489         .read           = seq_read,
 490         .llseek         = seq_lseek,
 491         .release        = sched_debug_release,
 492 };
 493
 494 static int __init init_sched_debug_procfs(void)
 495 {
 496         struct proc_dir_entry *pe;
 497
 498         pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops);
 499         if (!pe)
 500                 return -ENOMEM;
 501         return 0;
 502 }
 503
 504 __initcall(init_sched_debug_procfs);
 505
 506 #define __P(F) \
 507         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
 508 #define P(F) \
 509         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
 510 #define __PN(F) \
 511         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
 512 #define PN(F) \
 513         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
 514
 515
 516 static void sched_show_numa(struct task_struct *p, struct seq_file *m)
 517 {
 518 #ifdef CONFIG_NUMA_BALANCING
 519         struct mempolicy *pol;
 520         int node, i;
 521
 522         if (p->mm)
 523                 P(mm->numa_scan_seq);
 524
 525         task_lock(p);
 526         pol = p->mempolicy;
 527         if (pol && !(pol->flags & MPOL_F_MORON))
 528                 pol = NULL;
 529         mpol_get(pol);
 530         task_unlock(p);
 531
 532         SEQ_printf(m, "numa_migrations, %ld\n", xchg(&p->numa_pages_migrated, 0));
 533
 534         for_each_online_node(node) {
 535                 for (i = 0; i < 2; i++) {
 536                         unsigned long nr_faults = -1;
 537                         int cpu_current, home_node;
 538
 539                         if (p->numa_faults)
 540                                 nr_faults = p->numa_faults[2*node + i];
 541
 542                         cpu_current = !i ? (task_node(p) == node) :
 543                                 (pol && node_isset(node, pol->v.nodes));
 544
 545                         home_node = (p->numa_preferred_nid == node);
 546
 547                         SEQ_printf(m, "numa_faults_memory, %d, %d, %d, %d, %ld\n",
 548                                 i, node, cpu_current, home_node, nr_faults);
 549                 }
 550         }
 551
 552         mpol_put(pol);
 553 #endif
 554 }
 555
 556 void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
 557 {
 558         unsigned long nr_switches;
 559
 560         SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, task_pid_nr(p),
 561                                                 get_nr_threads(p));
 562         SEQ_printf(m,
 563                 "---------------------------------------------------------"
 564                 "----------\n");
 565 #define __P(F) \
 566         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
 567 #define P(F) \
 568         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
 569 #define __PN(F) \
 570         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
 571 #define PN(F) \
 572         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
 573
 574         PN(se.exec_start);
 575         PN(se.vruntime);
 576         PN(se.sum_exec_runtime);
 577
 578         nr_switches = p->nvcsw + p->nivcsw;
 579
 580 #ifdef CONFIG_SCHEDSTATS
 581         PN(se.statistics.wait_start);
 582         PN(se.statistics.sleep_start);
 583         PN(se.statistics.block_start);
 584         PN(se.statistics.sleep_max);
 585         PN(se.statistics.block_max);
 586         PN(se.statistics.exec_max);
 587         PN(se.statistics.slice_max);
 588         PN(se.statistics.wait_max);
 589         PN(se.statistics.wait_sum);
 590         P(se.statistics.wait_count);
 591         PN(se.statistics.iowait_sum);
 592         P(se.statistics.iowait_count);
 593         P(se.nr_migrations);
 594         P(se.statistics.nr_migrations_cold);
 595         P(se.statistics.nr_failed_migrations_affine);
 596         P(se.statistics.nr_failed_migrations_running);
 597         P(se.statistics.nr_failed_migrations_hot);
 598         P(se.statistics.nr_forced_migrations);
 599         P(se.statistics.nr_wakeups);
 600         P(se.statistics.nr_wakeups_sync);
 601         P(se.statistics.nr_wakeups_migrate);
 602         P(se.statistics.nr_wakeups_local);
 603         P(se.statistics.nr_wakeups_remote);
 604         P(se.statistics.nr_wakeups_affine);
 605         P(se.statistics.nr_wakeups_affine_attempts);
 606         P(se.statistics.nr_wakeups_passive);
 607         P(se.statistics.nr_wakeups_idle);
 608
 609         {
 610                 u64 avg_atom, avg_per_cpu;
 611
 612                 avg_atom = p->se.sum_exec_runtime;
 613                 if (nr_switches)
 614                         avg_atom = div64_ul(avg_atom, nr_switches);
 615                 else
 616                         avg_atom = -1LL;
 617
 618                 avg_per_cpu = p->se.sum_exec_runtime;
 619                 if (p->se.nr_migrations) {
 620                         avg_per_cpu = div64_u64(avg_per_cpu,
 621                                                 p->se.nr_migrations);
 622                 } else {
 623                         avg_per_cpu = -1LL;
 624                 }
 625
 626                 __PN(avg_atom);
 627                 __PN(avg_per_cpu);
 628         }
 629 #endif
 630         __P(nr_switches);
 631         SEQ_printf(m, "%-45s:%21Ld\n",
 632                    "nr_voluntary_switches", (long long)p->nvcsw);
 633         SEQ_printf(m, "%-45s:%21Ld\n",
 634                    "nr_involuntary_switches", (long long)p->nivcsw);
 635
 636         P(se.load.weight);
 637 #ifdef CONFIG_SMP
 638         P(se.avg.runnable_avg_sum);
 639         P(se.avg.runnable_avg_period);
 640         P(se.avg.load_avg_contrib);
 641         P(se.avg.decay_count);
 642 #endif
 643         P(policy);
 644         P(prio);
 645 #undef PN
 646 #undef __PN
 647 #undef P
 648 #undef __P
 649
 650         {
 651                 unsigned int this_cpu = raw_smp_processor_id();
 652                 u64 t0, t1;
 653
 654                 t0 = cpu_clock(this_cpu);
 655                 t1 = cpu_clock(this_cpu);
 656                 SEQ_printf(m, "%-45s:%21Ld\n",
 657                            "clock-delta", (long long)(t1-t0));
 658         }
 659
 660         sched_show_numa(p, m);
 661 }
 662
 663 void proc_sched_set_task(struct task_struct *p)
 664 {
 665 #ifdef CONFIG_SCHEDSTATS
 666         memset(&p->se.statistics, 0, sizeof(p->se.statistics));
 667 #endif
 668 }