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                 return;
  73
  74         PN(se->exec_start);
  75         PN(se->vruntime);
  76         PN(se->sum_exec_runtime);
  77 #ifdef CONFIG_SCHEDSTATS
  78         if (schedstat_enabled()) {
  79                 PN(se->statistics.wait_start);
  80                 PN(se->statistics.sleep_start);
  81                 PN(se->statistics.block_start);
  82                 PN(se->statistics.sleep_max);
  83                 PN(se->statistics.block_max);
  84                 PN(se->statistics.exec_max);
  85                 PN(se->statistics.slice_max);
  86                 PN(se->statistics.wait_max);
  87                 PN(se->statistics.wait_sum);
  88                 P(se->statistics.wait_count);
  89         }
  90 #endif
  91         P(se->load.weight);
  92 #ifdef CONFIG_SMP
  93         P(se->avg.load_avg);
  94         P(se->avg.util_avg);
  95 #endif
  96 #undef PN
  97 #undef P
  98 }
  99 #endif
 100
 101 #ifdef CONFIG_CGROUP_SCHED
 102 static char group_path[PATH_MAX];
 103
 104 static char *task_group_path(struct task_group *tg)
 105 {
 106         if (autogroup_path(tg, group_path, PATH_MAX))
 107                 return group_path;
 108
 109         return cgroup_path(tg->css.cgroup, group_path, PATH_MAX);
 110 }
 111 #endif
 112
 113 static void
 114 print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
 115 {
 116         if (rq->curr == p)
 117                 SEQ_printf(m, "R");
 118         else
 119                 SEQ_printf(m, " ");
 120
 121         SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ",
 122                 p->comm, task_pid_nr(p),
 123                 SPLIT_NS(p->se.vruntime),
 124                 (long long)(p->nvcsw + p->nivcsw),
 125                 p->prio);
 126 #ifdef CONFIG_SCHEDSTATS
 127         if (schedstat_enabled()) {
 128                 SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
 129                         SPLIT_NS(p->se.statistics.wait_sum),
 130                         SPLIT_NS(p->se.sum_exec_runtime),
 131                         SPLIT_NS(p->se.statistics.sum_sleep_runtime));
 132         }
 133 #else
 134         SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
 135                 0LL, 0L,
 136                 SPLIT_NS(p->se.sum_exec_runtime),
 137                 0LL, 0L);
 138 #endif
 139 #ifdef CONFIG_NUMA_BALANCING
 140         SEQ_printf(m, " %d %d", task_node(p), task_numa_group_id(p));
 141 #endif
 142 #ifdef CONFIG_CGROUP_SCHED
 143         SEQ_printf(m, " %s", task_group_path(task_group(p)));
 144 #endif
 145
 146         SEQ_printf(m, "\n");
 147 }
 148
 149 static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu)
 150 {
 151         struct task_struct *g, *p;
 152
 153         SEQ_printf(m,
 154         "\nrunnable tasks:\n"
 155         "            task   PID         tree-key  switches  prio"
 156         "     wait-time             sum-exec        sum-sleep\n"
 157         "------------------------------------------------------"
 158         "----------------------------------------------------\n");
 159
 160         rcu_read_lock();
 161         for_each_process_thread(g, p) {
 162                 if (task_cpu(p) != rq_cpu)
 163                         continue;
 164
 165                 print_task(m, rq, p);
 166         }
 167         rcu_read_unlock();
 168 }
 169
 170 void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 171 {
 172         s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
 173                 spread, rq0_min_vruntime, spread0;
 174         struct rq *rq = cpu_rq(cpu);
 175         struct sched_entity *last;
 176         unsigned long flags;
 177
 178 #ifdef CONFIG_FAIR_GROUP_SCHED
 179         SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, task_group_path(cfs_rq->tg));
 180 #else
 181         SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
 182 #endif
 183         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "exec_clock",
 184                         SPLIT_NS(cfs_rq->exec_clock));
 185
 186         raw_spin_lock_irqsave(&rq->lock, flags);
 187         if (cfs_rq->rb_leftmost)
 188                 MIN_vruntime = (__pick_first_entity(cfs_rq))->vruntime;
 189         last = __pick_last_entity(cfs_rq);
 190         if (last)
 191                 max_vruntime = last->vruntime;
 192         min_vruntime = cfs_rq->min_vruntime;
 193         rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime;
 194         raw_spin_unlock_irqrestore(&rq->lock, flags);
 195         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "MIN_vruntime",
 196                         SPLIT_NS(MIN_vruntime));
 197         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "min_vruntime",
 198                         SPLIT_NS(min_vruntime));
 199         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "max_vruntime",
 200                         SPLIT_NS(max_vruntime));
 201         spread = max_vruntime - MIN_vruntime;
 202         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "spread",
 203                         SPLIT_NS(spread));
 204         spread0 = min_vruntime - rq0_min_vruntime;
 205         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "spread0",
 206                         SPLIT_NS(spread0));
 207         SEQ_printf(m, "  .%-30s: %d\n", "nr_spread_over",
 208                         cfs_rq->nr_spread_over);
 209         SEQ_printf(m, "  .%-30s: %d\n", "nr_running", cfs_rq->nr_running);
 210         SEQ_printf(m, "  .%-30s: %ld\n", "load", cfs_rq->load.weight);
 211 #ifdef CONFIG_SMP
 212         SEQ_printf(m, "  .%-30s: %lu\n", "load_avg",
 213                         cfs_rq->avg.load_avg);
 214         SEQ_printf(m, "  .%-30s: %lu\n", "runnable_load_avg",
 215                         cfs_rq->runnable_load_avg);
 216         SEQ_printf(m, "  .%-30s: %lu\n", "util_avg",
 217                         cfs_rq->avg.util_avg);
 218         SEQ_printf(m, "  .%-30s: %ld\n", "removed_load_avg",
 219                         atomic_long_read(&cfs_rq->removed_load_avg));
 220         SEQ_printf(m, "  .%-30s: %ld\n", "removed_util_avg",
 221                         atomic_long_read(&cfs_rq->removed_util_avg));
 222 #ifdef CONFIG_FAIR_GROUP_SCHED
 223         SEQ_printf(m, "  .%-30s: %lu\n", "tg_load_avg_contrib",
 224                         cfs_rq->tg_load_avg_contrib);
 225         SEQ_printf(m, "  .%-30s: %ld\n", "tg_load_avg",
 226                         atomic_long_read(&cfs_rq->tg->load_avg));
 227 #endif
 228 #endif
 229 #ifdef CONFIG_CFS_BANDWIDTH
 230         SEQ_printf(m, "  .%-30s: %d\n", "throttled",
 231                         cfs_rq->throttled);
 232         SEQ_printf(m, "  .%-30s: %d\n", "throttle_count",
 233                         cfs_rq->throttle_count);
 234 #endif
 235
 236 #ifdef CONFIG_FAIR_GROUP_SCHED
 237         print_cfs_group_stats(m, cpu, cfs_rq->tg);
 238 #endif
 239 }
 240
 241 void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
 242 {
 243 #ifdef CONFIG_RT_GROUP_SCHED
 244         SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, task_group_path(rt_rq->tg));
 245 #else
 246         SEQ_printf(m, "\nrt_rq[%d]:\n", cpu);
 247 #endif
 248
 249 #define P(x) \
 250         SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(rt_rq->x))
 251 #define PN(x) \
 252         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x))
 253
 254         P(rt_nr_running);
 255         P(rt_throttled);
 256         PN(rt_time);
 257         PN(rt_runtime);
 258
 259 #undef PN
 260 #undef P
 261 }
 262
 263 void print_dl_rq(struct seq_file *m, int cpu, struct dl_rq *dl_rq)
 264 {
 265         SEQ_printf(m, "\ndl_rq[%d]:\n", cpu);
 266         SEQ_printf(m, "  .%-30s: %ld\n", "dl_nr_running", dl_rq->dl_nr_running);
 267 }
 268
 269 extern __read_mostly int sched_clock_running;
 270
 271 static void print_cpu(struct seq_file *m, int cpu)
 272 {
 273         struct rq *rq = cpu_rq(cpu);
 274         unsigned long flags;
 275
 276 #ifdef CONFIG_X86
 277         {
 278                 unsigned int freq = cpu_khz ? : 1;
 279
 280                 SEQ_printf(m, "cpu#%d, %u.%03u MHz\n",
 281                            cpu, freq / 1000, (freq % 1000));
 282         }
 283 #else
 284         SEQ_printf(m, "cpu#%d\n", cpu);
 285 #endif
 286
 287 #define P(x)                                                            \
 288 do {                                                                    \
 289         if (sizeof(rq->x) == 4)                                         \
 290                 SEQ_printf(m, "  .%-30s: %ld\n", #x, (long)(rq->x));    \
 291         else                                                            \
 292                 SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(rq->x));\
 293 } while (0)
 294
 295 #define PN(x) \
 296         SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x))
 297
 298         P(nr_running);
 299         SEQ_printf(m, "  .%-30s: %lu\n", "load",
 300                    rq->load.weight);
 301         P(nr_switches);
 302         P(nr_load_updates);
 303         P(nr_uninterruptible);
 304         PN(next_balance);
 305         SEQ_printf(m, "  .%-30s: %ld\n", "curr->pid", (long)(task_pid_nr(rq->curr)));
 306         PN(clock);
 307         PN(clock_task);
 308         P(cpu_load[0]);
 309         P(cpu_load[1]);
 310         P(cpu_load[2]);
 311         P(cpu_load[3]);
 312         P(cpu_load[4]);
 313 #undef P
 314 #undef PN
 315
 316 #ifdef CONFIG_SCHEDSTATS
 317 #define P(n) SEQ_printf(m, "  .%-30s: %d\n", #n, rq->n);
 318 #define P64(n) SEQ_printf(m, "  .%-30s: %Ld\n", #n, rq->n);
 319
 320 #ifdef CONFIG_SMP
 321         P64(avg_idle);
 322         P64(max_idle_balance_cost);
 323 #endif
 324
 325         if (schedstat_enabled()) {
 326                 P(yld_count);
 327                 P(sched_count);
 328                 P(sched_goidle);
 329                 P(ttwu_count);
 330                 P(ttwu_local);
 331         }
 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 #ifdef CONFIG_NUMA_BALANCING
 517 void print_numa_stats(struct seq_file *m, int node, unsigned long tsf,
 518                 unsigned long tpf, unsigned long gsf, unsigned long gpf)
 519 {
 520         SEQ_printf(m, "numa_faults node=%d ", node);
 521         SEQ_printf(m, "task_private=%lu task_shared=%lu ", tsf, tpf);
 522         SEQ_printf(m, "group_private=%lu group_shared=%lu\n", gsf, gpf);
 523 }
 524 #endif
 525
 526
 527 static void sched_show_numa(struct task_struct *p, struct seq_file *m)
 528 {
 529 #ifdef CONFIG_NUMA_BALANCING
 530         struct mempolicy *pol;
 531
 532         if (p->mm)
 533                 P(mm->numa_scan_seq);
 534
 535         task_lock(p);
 536         pol = p->mempolicy;
 537         if (pol && !(pol->flags & MPOL_F_MORON))
 538                 pol = NULL;
 539         mpol_get(pol);
 540         task_unlock(p);
 541
 542         P(numa_pages_migrated);
 543         P(numa_preferred_nid);
 544         P(total_numa_faults);
 545         SEQ_printf(m, "current_node=%d, numa_group_id=%d\n",
 546                         task_node(p), task_numa_group_id(p));
 547         show_numa_stats(p, m);
 548         mpol_put(pol);
 549 #endif
 550 }
 551
 552 void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
 553 {
 554         unsigned long nr_switches;
 555
 556         SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, task_pid_nr(p),
 557                                                 get_nr_threads(p));
 558         SEQ_printf(m,
 559                 "---------------------------------------------------------"
 560                 "----------\n");
 561 #define __P(F) \
 562         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
 563 #define P(F) \
 564         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
 565 #define __PN(F) \
 566         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
 567 #define PN(F) \
 568         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
 569
 570         PN(se.exec_start);
 571         PN(se.vruntime);
 572         PN(se.sum_exec_runtime);
 573
 574         nr_switches = p->nvcsw + p->nivcsw;
 575
 576 #ifdef CONFIG_SCHEDSTATS
 577         P(se.nr_migrations);
 578
 579         if (schedstat_enabled()) {
 580                 u64 avg_atom, avg_per_cpu;
 581
 582                 PN(se.statistics.sum_sleep_runtime);
 583                 PN(se.statistics.wait_start);
 584                 PN(se.statistics.sleep_start);
 585                 PN(se.statistics.block_start);
 586                 PN(se.statistics.sleep_max);
 587                 PN(se.statistics.block_max);
 588                 PN(se.statistics.exec_max);
 589                 PN(se.statistics.slice_max);
 590                 PN(se.statistics.wait_max);
 591                 PN(se.statistics.wait_sum);
 592                 P(se.statistics.wait_count);
 593                 PN(se.statistics.iowait_sum);
 594                 P(se.statistics.iowait_count);
 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                 avg_atom = p->se.sum_exec_runtime;
 611                 if (nr_switches)
 612                         avg_atom = div64_ul(avg_atom, nr_switches);
 613                 else
 614                         avg_atom = -1LL;
 615
 616                 avg_per_cpu = p->se.sum_exec_runtime;
 617                 if (p->se.nr_migrations) {
 618                         avg_per_cpu = div64_u64(avg_per_cpu,
 619                                                 p->se.nr_migrations);
 620                 } else {
 621                         avg_per_cpu = -1LL;
 622                 }
 623
 624                 __PN(avg_atom);
 625                 __PN(avg_per_cpu);
 626         }
 627 #endif
 628         __P(nr_switches);
 629         SEQ_printf(m, "%-45s:%21Ld\n",
 630                    "nr_voluntary_switches", (long long)p->nvcsw);
 631         SEQ_printf(m, "%-45s:%21Ld\n",
 632                    "nr_involuntary_switches", (long long)p->nivcsw);
 633
 634         P(se.load.weight);
 635 #ifdef CONFIG_SMP
 636         P(se.avg.load_sum);
 637         P(se.avg.util_sum);
 638         P(se.avg.load_avg);
 639         P(se.avg.util_avg);
 640         P(se.avg.last_update_time);
 641 #endif
 642         P(policy);
 643         P(prio);
 644 #undef PN
 645 #undef __PN
 646 #undef P
 647 #undef __P
 648
 649         {
 650                 unsigned int this_cpu = raw_smp_processor_id();
 651                 u64 t0, t1;
 652
 653                 t0 = cpu_clock(this_cpu);
 654                 t1 = cpu_clock(this_cpu);
 655                 SEQ_printf(m, "%-45s:%21Ld\n",
 656                            "clock-delta", (long long)(t1-t0));
 657         }
 658
 659         sched_show_numa(p, m);
 660 }
 661
 662 void proc_sched_set_task(struct task_struct *p)
 663 {
 664 #ifdef CONFIG_SCHEDSTATS
 665         memset(&p->se.statistics, 0, sizeof(p->se.statistics));
 666 #endif
 667 }