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->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.running_avg_sum);
  98         P(se->avg.avg_period);
  99         P(se->avg.load_avg_contrib);
 100         P(se->avg.utilization_avg_contrib);
 101         P(se->avg.decay_count);
 102 #endif
 103 #undef PN
 104 #undef P
 105 }
 106 #endif
 107
 108 #ifdef CONFIG_CGROUP_SCHED
 109 static char group_path[PATH_MAX];
 110
 111 static char *task_group_path(struct task_group *tg)
 112 {
 113         if (autogroup_path(tg, group_path, PATH_MAX))
 114                 return group_path;
 115
 116         return cgroup_path(tg->css.cgroup, group_path, PATH_MAX);
 117 }
 118 #endif
 119
 120 static void
 121 print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
 122 {
 123         if (rq->curr == p)
 124                 SEQ_printf(m, "R");
 125         else
 126                 SEQ_printf(m, " ");
 127
 128         SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ",
 129                 p->comm, task_pid_nr(p),
 130                 SPLIT_NS(p->se.vruntime),
 131                 (long long)(p->nvcsw + p->nivcsw),
 132                 p->prio);
 133 #ifdef CONFIG_SCHEDSTATS
 134         SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
 135                 SPLIT_NS(p->se.statistics.wait_sum),
 136                 SPLIT_NS(p->se.sum_exec_runtime),
 137                 SPLIT_NS(p->se.statistics.sum_sleep_runtime));
 138 #else
 139         SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
 140                 0LL, 0L,
 141                 SPLIT_NS(p->se.sum_exec_runtime),
 142                 0LL, 0L);
 143 #endif
 144 #ifdef CONFIG_NUMA_BALANCING
 145         SEQ_printf(m, " %d %d", task_node(p), task_numa_group_id(p));
 146 #endif
 147 #ifdef CONFIG_CGROUP_SCHED
 148         SEQ_printf(m, " %s", task_group_path(task_group(p)));
 149 #endif
 150
 151         SEQ_printf(m, "\n");
 152 }
 153
 154 static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu)
 155 {
 156         struct task_struct *g, *p;
 157
 158         SEQ_printf(m,
 159         "\nrunnable tasks:\n"
 160         "            task   PID         tree-key  switches  prio"
 161         "     wait-time             sum-exec        sum-sleep\n"
 162         "------------------------------------------------------"
 163         "----------------------------------------------------\n");
 164
 165         rcu_read_lock();
 166         for_each_process_thread(g, p) {
 167                 if (task_cpu(p) != rq_cpu)
 168                         continue;
 169
 170                 print_task(m, rq, p);
 171         }
 172         rcu_read_unlock();
 173 }
 174
 175 void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 176 {
 177         s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
 178                 spread, rq0_min_vruntime, spread0;
 179         struct rq *rq = cpu_rq(cpu);
 180         struct sched_entity *last;
 181         unsigned long flags;
 182
 183 #ifdef CONFIG_FAIR_GROUP_SCHED
 184         SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, task_group_path(cfs_rq->tg));
 185 #else
 186         SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
 187 #endif
 188         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "exec_clock",
 189                         SPLIT_NS(cfs_rq->exec_clock));
 190
 191         raw_spin_lock_irqsave(&rq->lock, flags);
 192         if (cfs_rq->rb_leftmost)
 193                 MIN_vruntime = (__pick_first_entity(cfs_rq))->vruntime;
 194         last = __pick_last_entity(cfs_rq);
 195         if (last)
 196                 max_vruntime = last->vruntime;
 197         min_vruntime = cfs_rq->min_vruntime;
 198         rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime;
 199         raw_spin_unlock_irqrestore(&rq->lock, flags);
 200         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "MIN_vruntime",
 201                         SPLIT_NS(MIN_vruntime));
 202         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "min_vruntime",
 203                         SPLIT_NS(min_vruntime));
 204         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "max_vruntime",
 205                         SPLIT_NS(max_vruntime));
 206         spread = max_vruntime - MIN_vruntime;
 207         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "spread",
 208                         SPLIT_NS(spread));
 209         spread0 = min_vruntime - rq0_min_vruntime;
 210         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "spread0",
 211                         SPLIT_NS(spread0));
 212         SEQ_printf(m, "  .%-30s: %d\n", "nr_spread_over",
 213                         cfs_rq->nr_spread_over);
 214         SEQ_printf(m, "  .%-30s: %d\n", "nr_running", cfs_rq->nr_running);
 215         SEQ_printf(m, "  .%-30s: %ld\n", "load", cfs_rq->load.weight);
 216 #ifdef CONFIG_SMP
 217         SEQ_printf(m, "  .%-30s: %ld\n", "runnable_load_avg",
 218                         cfs_rq->runnable_load_avg);
 219         SEQ_printf(m, "  .%-30s: %ld\n", "blocked_load_avg",
 220                         cfs_rq->blocked_load_avg);
 221         SEQ_printf(m, "  .%-30s: %ld\n", "utilization_load_avg",
 222                         cfs_rq->utilization_load_avg);
 223 #ifdef CONFIG_FAIR_GROUP_SCHED
 224         SEQ_printf(m, "  .%-30s: %ld\n", "tg_load_contrib",
 225                         cfs_rq->tg_load_contrib);
 226         SEQ_printf(m, "  .%-30s: %d\n", "tg_runnable_contrib",
 227                         cfs_rq->tg_runnable_contrib);
 228         SEQ_printf(m, "  .%-30s: %ld\n", "tg_load_avg",
 229                         atomic_long_read(&cfs_rq->tg->load_avg));
 230         SEQ_printf(m, "  .%-30s: %d\n", "tg->runnable_avg",
 231                         atomic_read(&cfs_rq->tg->runnable_avg));
 232 #endif
 233 #endif
 234 #ifdef CONFIG_CFS_BANDWIDTH
 235         SEQ_printf(m, "  .%-30s: %d\n", "throttled",
 236                         cfs_rq->throttled);
 237         SEQ_printf(m, "  .%-30s: %d\n", "throttle_count",
 238                         cfs_rq->throttle_count);
 239 #endif
 240
 241 #ifdef CONFIG_FAIR_GROUP_SCHED
 242         print_cfs_group_stats(m, cpu, cfs_rq->tg);
 243 #endif
 244 }
 245
 246 void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
 247 {
 248 #ifdef CONFIG_RT_GROUP_SCHED
 249         SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, task_group_path(rt_rq->tg));
 250 #else
 251         SEQ_printf(m, "\nrt_rq[%d]:\n", cpu);
 252 #endif
 253
 254 #define P(x) \
 255         SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(rt_rq->x))
 256 #define PN(x) \
 257         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x))
 258
 259         P(rt_nr_running);
 260         P(rt_throttled);
 261         PN(rt_time);
 262         PN(rt_runtime);
 263
 264 #undef PN
 265 #undef P
 266 }
 267
 268 void print_dl_rq(struct seq_file *m, int cpu, struct dl_rq *dl_rq)
 269 {
 270         SEQ_printf(m, "\ndl_rq[%d]:\n", cpu);
 271         SEQ_printf(m, "  .%-30s: %ld\n", "dl_nr_running", dl_rq->dl_nr_running);
 272 }
 273
 274 extern __read_mostly int sched_clock_running;
 275
 276 static void print_cpu(struct seq_file *m, int cpu)
 277 {
 278         struct rq *rq = cpu_rq(cpu);
 279         unsigned long flags;
 280
 281 #ifdef CONFIG_X86
 282         {
 283                 unsigned int freq = cpu_khz ? : 1;
 284
 285                 SEQ_printf(m, "cpu#%d, %u.%03u MHz\n",
 286                            cpu, freq / 1000, (freq % 1000));
 287         }
 288 #else
 289         SEQ_printf(m, "cpu#%d\n", cpu);
 290 #endif
 291
 292 #define P(x)                                                            \
 293 do {                                                                    \
 294         if (sizeof(rq->x) == 4)                                         \
 295                 SEQ_printf(m, "  .%-30s: %ld\n", #x, (long)(rq->x));    \
 296         else                                                            \
 297                 SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(rq->x));\
 298 } while (0)
 299
 300 #define PN(x) \
 301         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x))
 302
 303         P(nr_running);
 304         SEQ_printf(m, "  .%-30s: %lu\n", "load",
 305                    rq->load.weight);
 306         P(nr_switches);
 307         P(nr_load_updates);
 308         P(nr_uninterruptible);
 309         PN(next_balance);
 310         SEQ_printf(m, "  .%-30s: %ld\n", "curr->pid", (long)(task_pid_nr(rq->curr)));
 311         PN(clock);
 312         PN(clock_task);
 313         P(cpu_load[0]);
 314         P(cpu_load[1]);
 315         P(cpu_load[2]);
 316         P(cpu_load[3]);
 317         P(cpu_load[4]);
 318 #undef P
 319 #undef PN
 320
 321 #ifdef CONFIG_SCHEDSTATS
 322 #define P(n) SEQ_printf(m, "  .%-30s: %d\n", #n, rq->n);
 323 #define P64(n) SEQ_printf(m, "  .%-30s: %Ld\n", #n, rq->n);
 324
 325         P(yld_count);
 326
 327         P(sched_count);
 328         P(sched_goidle);
 329 #ifdef CONFIG_SMP
 330         P64(avg_idle);
 331         P64(max_idle_balance_cost);
 332 #endif
 333
 334         P(ttwu_count);
 335         P(ttwu_local);
 336
 337 #undef P
 338 #undef P64
 339 #endif
 340         spin_lock_irqsave(&sched_debug_lock, flags);
 341         print_cfs_stats(m, cpu);
 342         print_rt_stats(m, cpu);
 343         print_dl_stats(m, cpu);
 344
 345         print_rq(m, rq, cpu);
 346         spin_unlock_irqrestore(&sched_debug_lock, flags);
 347         SEQ_printf(m, "\n");
 348 }
 349
 350 static const char *sched_tunable_scaling_names[] = {
 351         "none",
 352         "logaritmic",
 353         "linear"
 354 };
 355
 356 static void sched_debug_header(struct seq_file *m)
 357 {
 358         u64 ktime, sched_clk, cpu_clk;
 359         unsigned long flags;
 360
 361         local_irq_save(flags);
 362         ktime = ktime_to_ns(ktime_get());
 363         sched_clk = sched_clock();
 364         cpu_clk = local_clock();
 365         local_irq_restore(flags);
 366
 367         SEQ_printf(m, "Sched Debug Version: v0.11, %s %.*s\n",
 368                 init_utsname()->release,
 369                 (int)strcspn(init_utsname()->version, " "),
 370                 init_utsname()->version);
 371
 372 #define P(x) \
 373         SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x))
 374 #define PN(x) \
 375         SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
 376         PN(ktime);
 377         PN(sched_clk);
 378         PN(cpu_clk);
 379         P(jiffies);
 380 #ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
 381         P(sched_clock_stable());
 382 #endif
 383 #undef PN
 384 #undef P
 385
 386         SEQ_printf(m, "\n");
 387         SEQ_printf(m, "sysctl_sched\n");
 388
 389 #define P(x) \
 390         SEQ_printf(m, "  .%-40s: %Ld\n", #x, (long long)(x))
 391 #define PN(x) \
 392         SEQ_printf(m, "  .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
 393         PN(sysctl_sched_latency);
 394         PN(sysctl_sched_min_granularity);
 395         PN(sysctl_sched_wakeup_granularity);
 396         P(sysctl_sched_child_runs_first);
 397         P(sysctl_sched_features);
 398 #undef PN
 399 #undef P
 400
 401         SEQ_printf(m, "  .%-40s: %d (%s)\n",
 402                 "sysctl_sched_tunable_scaling",
 403                 sysctl_sched_tunable_scaling,
 404                 sched_tunable_scaling_names[sysctl_sched_tunable_scaling]);
 405         SEQ_printf(m, "\n");
 406 }
 407
 408 static int sched_debug_show(struct seq_file *m, void *v)
 409 {
 410         int cpu = (unsigned long)(v - 2);
 411
 412         if (cpu != -1)
 413                 print_cpu(m, cpu);
 414         else
 415                 sched_debug_header(m);
 416
 417         return 0;
 418 }
 419
 420 void sysrq_sched_debug_show(void)
 421 {
 422         int cpu;
 423
 424         sched_debug_header(NULL);
 425         for_each_online_cpu(cpu)
 426                 print_cpu(NULL, cpu);
 427
 428 }
 429
 430 /*
 431  * This itererator needs some explanation.
 432  * It returns 1 for the header position.
 433  * This means 2 is cpu 0.
 434  * In a hotplugged system some cpus, including cpu 0, may be missing so we have
 435  * to use cpumask_* to iterate over the cpus.
 436  */
 437 static void *sched_debug_start(struct seq_file *file, loff_t *offset)
 438 {
 439         unsigned long n = *offset;
 440
 441         if (n == 0)
 442                 return (void *) 1;
 443
 444         n--;
 445
 446         if (n > 0)
 447                 n = cpumask_next(n - 1, cpu_online_mask);
 448         else
 449                 n = cpumask_first(cpu_online_mask);
 450
 451         *offset = n + 1;
 452
 453         if (n < nr_cpu_ids)
 454                 return (void *)(unsigned long)(n + 2);
 455         return NULL;
 456 }
 457
 458 static void *sched_debug_next(struct seq_file *file, void *data, loff_t *offset)
 459 {
 460         (*offset)++;
 461         return sched_debug_start(file, offset);
 462 }
 463
 464 static void sched_debug_stop(struct seq_file *file, void *data)
 465 {
 466 }
 467
 468 static const struct seq_operations sched_debug_sops = {
 469         .start = sched_debug_start,
 470         .next = sched_debug_next,
 471         .stop = sched_debug_stop,
 472         .show = sched_debug_show,
 473 };
 474
 475 static int sched_debug_release(struct inode *inode, struct file *file)
 476 {
 477         seq_release(inode, file);
 478
 479         return 0;
 480 }
 481
 482 static int sched_debug_open(struct inode *inode, struct file *filp)
 483 {
 484         int ret = 0;
 485
 486         ret = seq_open(filp, &sched_debug_sops);
 487
 488         return ret;
 489 }
 490
 491 static const struct file_operations sched_debug_fops = {
 492         .open           = sched_debug_open,
 493         .read           = seq_read,
 494         .llseek         = seq_lseek,
 495         .release        = sched_debug_release,
 496 };
 497
 498 static int __init init_sched_debug_procfs(void)
 499 {
 500         struct proc_dir_entry *pe;
 501
 502         pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops);
 503         if (!pe)
 504                 return -ENOMEM;
 505         return 0;
 506 }
 507
 508 __initcall(init_sched_debug_procfs);
 509
 510 #define __P(F) \
 511         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
 512 #define P(F) \
 513         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
 514 #define __PN(F) \
 515         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
 516 #define PN(F) \
 517         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
 518
 519
 520 #ifdef CONFIG_NUMA_BALANCING
 521 void print_numa_stats(struct seq_file *m, int node, unsigned long tsf,
 522                 unsigned long tpf, unsigned long gsf, unsigned long gpf)
 523 {
 524         SEQ_printf(m, "numa_faults node=%d ", node);
 525         SEQ_printf(m, "task_private=%lu task_shared=%lu ", tsf, tpf);
 526         SEQ_printf(m, "group_private=%lu group_shared=%lu\n", gsf, gpf);
 527 }
 528 #endif
 529
 530
 531 static void sched_show_numa(struct task_struct *p, struct seq_file *m)
 532 {
 533 #ifdef CONFIG_NUMA_BALANCING
 534         struct mempolicy *pol;
 535
 536         if (p->mm)
 537                 P(mm->numa_scan_seq);
 538
 539         task_lock(p);
 540         pol = p->mempolicy;
 541         if (pol && !(pol->flags & MPOL_F_MORON))
 542                 pol = NULL;
 543         mpol_get(pol);
 544         task_unlock(p);
 545
 546         P(numa_pages_migrated);
 547         P(numa_preferred_nid);
 548         P(total_numa_faults);
 549         SEQ_printf(m, "current_node=%d, numa_group_id=%d\n",
 550                         task_node(p), task_numa_group_id(p));
 551         show_numa_stats(p, m);
 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.sum_sleep_runtime);
 582         PN(se.statistics.wait_start);
 583         PN(se.statistics.sleep_start);
 584         PN(se.statistics.block_start);
 585         PN(se.statistics.sleep_max);
 586         PN(se.statistics.block_max);
 587         PN(se.statistics.exec_max);
 588         PN(se.statistics.slice_max);
 589         PN(se.statistics.wait_max);
 590         PN(se.statistics.wait_sum);
 591         P(se.statistics.wait_count);
 592         PN(se.statistics.iowait_sum);
 593         P(se.statistics.iowait_count);
 594         P(se.nr_migrations);
 595         P(se.statistics.nr_migrations_cold);
 596         P(se.statistics.nr_failed_migrations_affine);
 597         P(se.statistics.nr_failed_migrations_running);
 598         P(se.statistics.nr_failed_migrations_hot);
 599         P(se.statistics.nr_forced_migrations);
 600         P(se.statistics.nr_wakeups);
 601         P(se.statistics.nr_wakeups_sync);
 602         P(se.statistics.nr_wakeups_migrate);
 603         P(se.statistics.nr_wakeups_local);
 604         P(se.statistics.nr_wakeups_remote);
 605         P(se.statistics.nr_wakeups_affine);
 606         P(se.statistics.nr_wakeups_affine_attempts);
 607         P(se.statistics.nr_wakeups_passive);
 608         P(se.statistics.nr_wakeups_idle);
 609
 610         {
 611                 u64 avg_atom, avg_per_cpu;
 612
 613                 avg_atom = p->se.sum_exec_runtime;
 614                 if (nr_switches)
 615                         avg_atom = div64_ul(avg_atom, nr_switches);
 616                 else
 617                         avg_atom = -1LL;
 618
 619                 avg_per_cpu = p->se.sum_exec_runtime;
 620                 if (p->se.nr_migrations) {
 621                         avg_per_cpu = div64_u64(avg_per_cpu,
 622                                                 p->se.nr_migrations);
 623                 } else {
 624                         avg_per_cpu = -1LL;
 625                 }
 626
 627                 __PN(avg_atom);
 628                 __PN(avg_per_cpu);
 629         }
 630 #endif
 631         __P(nr_switches);
 632         SEQ_printf(m, "%-45s:%21Ld\n",
 633                    "nr_voluntary_switches", (long long)p->nvcsw);
 634         SEQ_printf(m, "%-45s:%21Ld\n",
 635                    "nr_involuntary_switches", (long long)p->nivcsw);
 636
 637         P(se.load.weight);
 638 #ifdef CONFIG_SMP
 639         P(se.avg.runnable_avg_sum);
 640         P(se.avg.running_avg_sum);
 641         P(se.avg.avg_period);
 642         P(se.avg.load_avg_contrib);
 643         P(se.avg.utilization_avg_contrib);
 644         P(se.avg.decay_count);
 645 #endif
 646         P(policy);
 647         P(prio);
 648 #undef PN
 649 #undef __PN
 650 #undef P
 651 #undef __P
 652
 653         {
 654                 unsigned int this_cpu = raw_smp_processor_id();
 655                 u64 t0, t1;
 656
 657                 t0 = cpu_clock(this_cpu);
 658                 t1 = cpu_clock(this_cpu);
 659                 SEQ_printf(m, "%-45s:%21Ld\n",
 660                            "clock-delta", (long long)(t1-t0));
 661         }
 662
 663         sched_show_numa(p, m);
 664 }
 665
 666 void proc_sched_set_task(struct task_struct *p)
 667 {
 668 #ifdef CONFIG_SCHEDSTATS
 669         memset(&p->se.statistics, 0, sizeof(p->se.statistics));
 670 #endif
 671 }