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         cgroup_path(tg->css.cgroup, group_path, PATH_MAX);
 115         return group_path;
 116 }
 117 #endif
 118
 119 static void
 120 print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
 121 {
 122         if (rq->curr == p)
 123                 SEQ_printf(m, "R");
 124         else
 125                 SEQ_printf(m, " ");
 126
 127         SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ",
 128                 p->comm, task_pid_nr(p),
 129                 SPLIT_NS(p->se.vruntime),
 130                 (long long)(p->nvcsw + p->nivcsw),
 131                 p->prio);
 132 #ifdef CONFIG_SCHEDSTATS
 133         SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
 134                 SPLIT_NS(p->se.vruntime),
 135                 SPLIT_NS(p->se.sum_exec_runtime),
 136                 SPLIT_NS(p->se.statistics.sum_sleep_runtime));
 137 #else
 138         SEQ_printf(m, "%15Ld %15Ld %15Ld.%06ld %15Ld.%06ld %15Ld.%06ld",
 139                 0LL, 0LL, 0LL, 0L, 0LL, 0L, 0LL, 0L);
 140 #endif
 141 #ifdef CONFIG_NUMA_BALANCING
 142         SEQ_printf(m, " %d", cpu_to_node(task_cpu(p)));
 143 #endif
 144 #ifdef CONFIG_CGROUP_SCHED
 145         SEQ_printf(m, " %s", task_group_path(task_group(p)));
 146 #endif
 147
 148         SEQ_printf(m, "\n");
 149 }
 150
 151 static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu)
 152 {
 153         struct task_struct *g, *p;
 154         unsigned long flags;
 155
 156         SEQ_printf(m,
 157         "\nrunnable tasks:\n"
 158         "            task   PID         tree-key  switches  prio"
 159         "     exec-runtime         sum-exec        sum-sleep\n"
 160         "------------------------------------------------------"
 161         "----------------------------------------------------\n");
 162
 163         read_lock_irqsave(&tasklist_lock, flags);
 164
 165         do_each_thread(g, p) {
 166                 if (task_cpu(p) != rq_cpu)
 167                         continue;
 168
 169                 print_task(m, rq, p);
 170         } while_each_thread(g, p);
 171
 172         read_unlock_irqrestore(&tasklist_lock, flags);
 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 #ifdef CONFIG_FAIR_GROUP_SCHED
 222         SEQ_printf(m, "  .%-30s: %ld\n", "tg_load_contrib",
 223                         cfs_rq->tg_load_contrib);
 224         SEQ_printf(m, "  .%-30s: %d\n", "tg_runnable_contrib",
 225                         cfs_rq->tg_runnable_contrib);
 226         SEQ_printf(m, "  .%-30s: %ld\n", "tg_load_avg",
 227                         atomic_long_read(&cfs_rq->tg->load_avg));
 228         SEQ_printf(m, "  .%-30s: %d\n", "tg->runnable_avg",
 229                         atomic_read(&cfs_rq->tg->runnable_avg));
 230 #endif
 231 #endif
 232
 233 #ifdef CONFIG_FAIR_GROUP_SCHED
 234         print_cfs_group_stats(m, cpu, cfs_rq->tg);
 235 #endif
 236 }
 237
 238 void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
 239 {
 240 #ifdef CONFIG_RT_GROUP_SCHED
 241         SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, task_group_path(rt_rq->tg));
 242 #else
 243         SEQ_printf(m, "\nrt_rq[%d]:\n", cpu);
 244 #endif
 245
 246 #define P(x) \
 247         SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(rt_rq->x))
 248 #define PN(x) \
 249         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x))
 250
 251         P(rt_nr_running);
 252         P(rt_throttled);
 253         PN(rt_time);
 254         PN(rt_runtime);
 255
 256 #undef PN
 257 #undef P
 258 }
 259
 260 extern __read_mostly int sched_clock_running;
 261
 262 static void print_cpu(struct seq_file *m, int cpu)
 263 {
 264         struct rq *rq = cpu_rq(cpu);
 265         unsigned long flags;
 266
 267 #ifdef CONFIG_X86
 268         {
 269                 unsigned int freq = cpu_khz ? : 1;
 270
 271                 SEQ_printf(m, "cpu#%d, %u.%03u MHz\n",
 272                            cpu, freq / 1000, (freq % 1000));
 273         }
 274 #else
 275         SEQ_printf(m, "cpu#%d\n", cpu);
 276 #endif
 277
 278 #define P(x)                                                            \
 279 do {                                                                    \
 280         if (sizeof(rq->x) == 4)                                         \
 281                 SEQ_printf(m, "  .%-30s: %ld\n", #x, (long)(rq->x));    \
 282         else                                                            \
 283                 SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(rq->x));\
 284 } while (0)
 285
 286 #define PN(x) \
 287         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x))
 288
 289         P(nr_running);
 290         SEQ_printf(m, "  .%-30s: %lu\n", "load",
 291                    rq->load.weight);
 292         P(nr_switches);
 293         P(nr_load_updates);
 294         P(nr_uninterruptible);
 295         PN(next_balance);
 296         SEQ_printf(m, "  .%-30s: %ld\n", "curr->pid", (long)(task_pid_nr(rq->curr)));
 297         PN(clock);
 298         P(cpu_load[0]);
 299         P(cpu_load[1]);
 300         P(cpu_load[2]);
 301         P(cpu_load[3]);
 302         P(cpu_load[4]);
 303 #undef P
 304 #undef PN
 305
 306 #ifdef CONFIG_SCHEDSTATS
 307 #define P(n) SEQ_printf(m, "  .%-30s: %d\n", #n, rq->n);
 308 #define P64(n) SEQ_printf(m, "  .%-30s: %Ld\n", #n, rq->n);
 309
 310         P(yld_count);
 311
 312         P(sched_count);
 313         P(sched_goidle);
 314 #ifdef CONFIG_SMP
 315         P64(avg_idle);
 316 #endif
 317
 318         P(ttwu_count);
 319         P(ttwu_local);
 320
 321 #undef P
 322 #undef P64
 323 #endif
 324         spin_lock_irqsave(&sched_debug_lock, flags);
 325         print_cfs_stats(m, cpu);
 326         print_rt_stats(m, cpu);
 327
 328         rcu_read_lock();
 329         print_rq(m, rq, cpu);
 330         rcu_read_unlock();
 331         spin_unlock_irqrestore(&sched_debug_lock, flags);
 332         SEQ_printf(m, "\n");
 333 }
 334
 335 static const char *sched_tunable_scaling_names[] = {
 336         "none",
 337         "logaritmic",
 338         "linear"
 339 };
 340
 341 static void sched_debug_header(struct seq_file *m)
 342 {
 343         u64 ktime, sched_clk, cpu_clk;
 344         unsigned long flags;
 345
 346         local_irq_save(flags);
 347         ktime = ktime_to_ns(ktime_get());
 348         sched_clk = sched_clock();
 349         cpu_clk = local_clock();
 350         local_irq_restore(flags);
 351
 352         SEQ_printf(m, "Sched Debug Version: v0.11, %s %.*s\n",
 353                 init_utsname()->release,
 354                 (int)strcspn(init_utsname()->version, " "),
 355                 init_utsname()->version);
 356
 357 #define P(x) \
 358         SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x))
 359 #define PN(x) \
 360         SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
 361         PN(ktime);
 362         PN(sched_clk);
 363         PN(cpu_clk);
 364         P(jiffies);
 365 #ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
 366         P(sched_clock_stable);
 367 #endif
 368 #undef PN
 369 #undef P
 370
 371         SEQ_printf(m, "\n");
 372         SEQ_printf(m, "sysctl_sched\n");
 373
 374 #define P(x) \
 375         SEQ_printf(m, "  .%-40s: %Ld\n", #x, (long long)(x))
 376 #define PN(x) \
 377         SEQ_printf(m, "  .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
 378         PN(sysctl_sched_latency);
 379         PN(sysctl_sched_min_granularity);
 380         PN(sysctl_sched_wakeup_granularity);
 381         P(sysctl_sched_child_runs_first);
 382         P(sysctl_sched_features);
 383 #undef PN
 384 #undef P
 385
 386         SEQ_printf(m, "  .%-40s: %d (%s)\n",
 387                 "sysctl_sched_tunable_scaling",
 388                 sysctl_sched_tunable_scaling,
 389                 sched_tunable_scaling_names[sysctl_sched_tunable_scaling]);
 390         SEQ_printf(m, "\n");
 391 }
 392
 393 static int sched_debug_show(struct seq_file *m, void *v)
 394 {
 395         int cpu = (unsigned long)(v - 2);
 396
 397         if (cpu != -1)
 398                 print_cpu(m, cpu);
 399         else
 400                 sched_debug_header(m);
 401
 402         return 0;
 403 }
 404
 405 void sysrq_sched_debug_show(void)
 406 {
 407         int cpu;
 408
 409         sched_debug_header(NULL);
 410         for_each_online_cpu(cpu)
 411                 print_cpu(NULL, cpu);
 412
 413 }
 414
 415 /*
 416  * This itererator needs some explanation.
 417  * It returns 1 for the header position.
 418  * This means 2 is cpu 0.
 419  * In a hotplugged system some cpus, including cpu 0, may be missing so we have
 420  * to use cpumask_* to iterate over the cpus.
 421  */
 422 static void *sched_debug_start(struct seq_file *file, loff_t *offset)
 423 {
 424         unsigned long n = *offset;
 425
 426         if (n == 0)
 427                 return (void *) 1;
 428
 429         n--;
 430
 431         if (n > 0)
 432                 n = cpumask_next(n - 1, cpu_online_mask);
 433         else
 434                 n = cpumask_first(cpu_online_mask);
 435
 436         *offset = n + 1;
 437
 438         if (n < nr_cpu_ids)
 439                 return (void *)(unsigned long)(n + 2);
 440         return NULL;
 441 }
 442
 443 static void *sched_debug_next(struct seq_file *file, void *data, loff_t *offset)
 444 {
 445         (*offset)++;
 446         return sched_debug_start(file, offset);
 447 }
 448
 449 static void sched_debug_stop(struct seq_file *file, void *data)
 450 {
 451 }
 452
 453 static const struct seq_operations sched_debug_sops = {
 454         .start = sched_debug_start,
 455         .next = sched_debug_next,
 456         .stop = sched_debug_stop,
 457         .show = sched_debug_show,
 458 };
 459
 460 static int sched_debug_release(struct inode *inode, struct file *file)
 461 {
 462         seq_release(inode, file);
 463
 464         return 0;
 465 }
 466
 467 static int sched_debug_open(struct inode *inode, struct file *filp)
 468 {
 469         int ret = 0;
 470
 471         ret = seq_open(filp, &sched_debug_sops);
 472
 473         return ret;
 474 }
 475
 476 static const struct file_operations sched_debug_fops = {
 477         .open           = sched_debug_open,
 478         .read           = seq_read,
 479         .llseek         = seq_lseek,
 480         .release        = sched_debug_release,
 481 };
 482
 483 static int __init init_sched_debug_procfs(void)
 484 {
 485         struct proc_dir_entry *pe;
 486
 487         pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops);
 488         if (!pe)
 489                 return -ENOMEM;
 490         return 0;
 491 }
 492
 493 __initcall(init_sched_debug_procfs);
 494
 495 #define __P(F) \
 496         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
 497 #define P(F) \
 498         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
 499 #define __PN(F) \
 500         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
 501 #define PN(F) \
 502         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
 503
 504
 505 static void sched_show_numa(struct task_struct *p, struct seq_file *m)
 506 {
 507 #ifdef CONFIG_NUMA_BALANCING
 508         struct mempolicy *pol;
 509         int node, i;
 510
 511         if (p->mm)
 512                 P(mm->numa_scan_seq);
 513
 514         task_lock(p);
 515         pol = p->mempolicy;
 516         if (pol && !(pol->flags & MPOL_F_MORON))
 517                 pol = NULL;
 518         mpol_get(pol);
 519         task_unlock(p);
 520
 521         SEQ_printf(m, "numa_migrations, %ld\n", xchg(&p->numa_pages_migrated, 0));
 522
 523         for_each_online_node(node) {
 524                 for (i = 0; i < 2; i++) {
 525                         unsigned long nr_faults = -1;
 526                         int cpu_current, home_node;
 527
 528                         if (p->numa_faults)
 529                                 nr_faults = p->numa_faults[2*node + i];
 530
 531                         cpu_current = !i ? (task_node(p) == node) :
 532                                 (pol && node_isset(node, pol->v.nodes));
 533
 534                         home_node = (p->numa_preferred_nid == node);
 535
 536                         SEQ_printf(m, "numa_faults, %d, %d, %d, %d, %ld\n",
 537                                 i, node, cpu_current, home_node, nr_faults);
 538                 }
 539         }
 540
 541         mpol_put(pol);
 542 #endif
 543 }
 544
 545 void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
 546 {
 547         unsigned long nr_switches;
 548
 549         SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, task_pid_nr(p),
 550                                                 get_nr_threads(p));
 551         SEQ_printf(m,
 552                 "---------------------------------------------------------"
 553                 "----------\n");
 554 #define __P(F) \
 555         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
 556 #define P(F) \
 557         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
 558 #define __PN(F) \
 559         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
 560 #define PN(F) \
 561         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
 562
 563         PN(se.exec_start);
 564         PN(se.vruntime);
 565         PN(se.sum_exec_runtime);
 566
 567         nr_switches = p->nvcsw + p->nivcsw;
 568
 569 #ifdef CONFIG_SCHEDSTATS
 570         PN(se.statistics.wait_start);
 571         PN(se.statistics.sleep_start);
 572         PN(se.statistics.block_start);
 573         PN(se.statistics.sleep_max);
 574         PN(se.statistics.block_max);
 575         PN(se.statistics.exec_max);
 576         PN(se.statistics.slice_max);
 577         PN(se.statistics.wait_max);
 578         PN(se.statistics.wait_sum);
 579         P(se.statistics.wait_count);
 580         PN(se.statistics.iowait_sum);
 581         P(se.statistics.iowait_count);
 582         P(se.nr_migrations);
 583         P(se.statistics.nr_migrations_cold);
 584         P(se.statistics.nr_failed_migrations_affine);
 585         P(se.statistics.nr_failed_migrations_running);
 586         P(se.statistics.nr_failed_migrations_hot);
 587         P(se.statistics.nr_forced_migrations);
 588         P(se.statistics.nr_wakeups);
 589         P(se.statistics.nr_wakeups_sync);
 590         P(se.statistics.nr_wakeups_migrate);
 591         P(se.statistics.nr_wakeups_local);
 592         P(se.statistics.nr_wakeups_remote);
 593         P(se.statistics.nr_wakeups_affine);
 594         P(se.statistics.nr_wakeups_affine_attempts);
 595         P(se.statistics.nr_wakeups_passive);
 596         P(se.statistics.nr_wakeups_idle);
 597
 598         {
 599                 u64 avg_atom, avg_per_cpu;
 600
 601                 avg_atom = p->se.sum_exec_runtime;
 602                 if (nr_switches)
 603                         do_div(avg_atom, nr_switches);
 604                 else
 605                         avg_atom = -1LL;
 606
 607                 avg_per_cpu = p->se.sum_exec_runtime;
 608                 if (p->se.nr_migrations) {
 609                         avg_per_cpu = div64_u64(avg_per_cpu,
 610                                                 p->se.nr_migrations);
 611                 } else {
 612                         avg_per_cpu = -1LL;
 613                 }
 614
 615                 __PN(avg_atom);
 616                 __PN(avg_per_cpu);
 617         }
 618 #endif
 619         __P(nr_switches);
 620         SEQ_printf(m, "%-45s:%21Ld\n",
 621                    "nr_voluntary_switches", (long long)p->nvcsw);
 622         SEQ_printf(m, "%-45s:%21Ld\n",
 623                    "nr_involuntary_switches", (long long)p->nivcsw);
 624
 625         P(se.load.weight);
 626 #ifdef CONFIG_SMP
 627         P(se.avg.runnable_avg_sum);
 628         P(se.avg.runnable_avg_period);
 629         P(se.avg.load_avg_contrib);
 630         P(se.avg.decay_count);
 631 #endif
 632         P(policy);
 633         P(prio);
 634 #undef PN
 635 #undef __PN
 636 #undef P
 637 #undef __P
 638
 639         {
 640                 unsigned int this_cpu = raw_smp_processor_id();
 641                 u64 t0, t1;
 642
 643                 t0 = cpu_clock(this_cpu);
 644                 t1 = cpu_clock(this_cpu);
 645                 SEQ_printf(m, "%-45s:%21Ld\n",
 646                            "clock-delta", (long long)(t1-t0));
 647         }
 648
 649         sched_show_numa(p, m);
 650 }
 651
 652 void proc_sched_set_task(struct task_struct *p)
 653 {
 654 #ifdef CONFIG_SCHEDSTATS
 655         memset(&p->se.statistics, 0, sizeof(p->se.statistics));
 656 #endif
 657 }