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         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         P(yld_count);
 321
 322         P(sched_count);
 323         P(sched_goidle);
 324 #ifdef CONFIG_SMP
 325         P64(avg_idle);
 326         P64(max_idle_balance_cost);
 327 #endif
 328
 329         P(ttwu_count);
 330         P(ttwu_local);
 331
 332 #undef P
 333 #undef P64
 334 #endif
 335         spin_lock_irqsave(&sched_debug_lock, flags);
 336         print_cfs_stats(m, cpu);
 337         print_rt_stats(m, cpu);
 338         print_dl_stats(m, cpu);
 339
 340         print_rq(m, rq, cpu);
 341         spin_unlock_irqrestore(&sched_debug_lock, flags);
 342         SEQ_printf(m, "\n");
 343 }
 344
 345 static const char *sched_tunable_scaling_names[] = {
 346         "none",
 347         "logaritmic",
 348         "linear"
 349 };
 350
 351 static void sched_debug_header(struct seq_file *m)
 352 {
 353         u64 ktime, sched_clk, cpu_clk;
 354         unsigned long flags;
 355
 356         local_irq_save(flags);
 357         ktime = ktime_to_ns(ktime_get());
 358         sched_clk = sched_clock();
 359         cpu_clk = local_clock();
 360         local_irq_restore(flags);
 361
 362         SEQ_printf(m, "Sched Debug Version: v0.11, %s %.*s\n",
 363                 init_utsname()->release,
 364                 (int)strcspn(init_utsname()->version, " "),
 365                 init_utsname()->version);
 366
 367 #define P(x) \
 368         SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x))
 369 #define PN(x) \
 370         SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
 371         PN(ktime);
 372         PN(sched_clk);
 373         PN(cpu_clk);
 374         P(jiffies);
 375 #ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
 376         P(sched_clock_stable());
 377 #endif
 378 #undef PN
 379 #undef P
 380
 381         SEQ_printf(m, "\n");
 382         SEQ_printf(m, "sysctl_sched\n");
 383
 384 #define P(x) \
 385         SEQ_printf(m, "  .%-40s: %Ld\n", #x, (long long)(x))
 386 #define PN(x) \
 387         SEQ_printf(m, "  .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
 388         PN(sysctl_sched_latency);
 389         PN(sysctl_sched_min_granularity);
 390         PN(sysctl_sched_wakeup_granularity);
 391         P(sysctl_sched_child_runs_first);
 392         P(sysctl_sched_features);
 393 #undef PN
 394 #undef P
 395
 396         SEQ_printf(m, "  .%-40s: %d (%s)\n",
 397                 "sysctl_sched_tunable_scaling",
 398                 sysctl_sched_tunable_scaling,
 399                 sched_tunable_scaling_names[sysctl_sched_tunable_scaling]);
 400         SEQ_printf(m, "\n");
 401 }
 402
 403 static int sched_debug_show(struct seq_file *m, void *v)
 404 {
 405         int cpu = (unsigned long)(v - 2);
 406
 407         if (cpu != -1)
 408                 print_cpu(m, cpu);
 409         else
 410                 sched_debug_header(m);
 411
 412         return 0;
 413 }
 414
 415 void sysrq_sched_debug_show(void)
 416 {
 417         int cpu;
 418
 419         sched_debug_header(NULL);
 420         for_each_online_cpu(cpu)
 421                 print_cpu(NULL, cpu);
 422
 423 }
 424
 425 /*
 426  * This itererator needs some explanation.
 427  * It returns 1 for the header position.
 428  * This means 2 is cpu 0.
 429  * In a hotplugged system some cpus, including cpu 0, may be missing so we have
 430  * to use cpumask_* to iterate over the cpus.
 431  */
 432 static void *sched_debug_start(struct seq_file *file, loff_t *offset)
 433 {
 434         unsigned long n = *offset;
 435
 436         if (n == 0)
 437                 return (void *) 1;
 438
 439         n--;
 440
 441         if (n > 0)
 442                 n = cpumask_next(n - 1, cpu_online_mask);
 443         else
 444                 n = cpumask_first(cpu_online_mask);
 445
 446         *offset = n + 1;
 447
 448         if (n < nr_cpu_ids)
 449                 return (void *)(unsigned long)(n + 2);
 450         return NULL;
 451 }
 452
 453 static void *sched_debug_next(struct seq_file *file, void *data, loff_t *offset)
 454 {
 455         (*offset)++;
 456         return sched_debug_start(file, offset);
 457 }
 458
 459 static void sched_debug_stop(struct seq_file *file, void *data)
 460 {
 461 }
 462
 463 static const struct seq_operations sched_debug_sops = {
 464         .start = sched_debug_start,
 465         .next = sched_debug_next,
 466         .stop = sched_debug_stop,
 467         .show = sched_debug_show,
 468 };
 469
 470 static int sched_debug_release(struct inode *inode, struct file *file)
 471 {
 472         seq_release(inode, file);
 473
 474         return 0;
 475 }
 476
 477 static int sched_debug_open(struct inode *inode, struct file *filp)
 478 {
 479         int ret = 0;
 480
 481         ret = seq_open(filp, &sched_debug_sops);
 482
 483         return ret;
 484 }
 485
 486 static const struct file_operations sched_debug_fops = {
 487         .open           = sched_debug_open,
 488         .read           = seq_read,
 489         .llseek         = seq_lseek,
 490         .release        = sched_debug_release,
 491 };
 492
 493 static int __init init_sched_debug_procfs(void)
 494 {
 495         struct proc_dir_entry *pe;
 496
 497         pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops);
 498         if (!pe)
 499                 return -ENOMEM;
 500         return 0;
 501 }
 502
 503 __initcall(init_sched_debug_procfs);
 504
 505 #define __P(F) \
 506         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
 507 #define P(F) \
 508         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
 509 #define __PN(F) \
 510         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
 511 #define PN(F) \
 512         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
 513
 514
 515 static void sched_show_numa(struct task_struct *p, struct seq_file *m)
 516 {
 517 #ifdef CONFIG_NUMA_BALANCING
 518         struct mempolicy *pol;
 519         int node, i;
 520
 521         if (p->mm)
 522                 P(mm->numa_scan_seq);
 523
 524         task_lock(p);
 525         pol = p->mempolicy;
 526         if (pol && !(pol->flags & MPOL_F_MORON))
 527                 pol = NULL;
 528         mpol_get(pol);
 529         task_unlock(p);
 530
 531         SEQ_printf(m, "numa_migrations, %ld\n", xchg(&p->numa_pages_migrated, 0));
 532
 533         for_each_online_node(node) {
 534                 for (i = 0; i < 2; i++) {
 535                         unsigned long nr_faults = -1;
 536                         int cpu_current, home_node;
 537
 538                         if (p->numa_faults)
 539                                 nr_faults = p->numa_faults[2*node + i];
 540
 541                         cpu_current = !i ? (task_node(p) == node) :
 542                                 (pol && node_isset(node, pol->v.nodes));
 543
 544                         home_node = (p->numa_preferred_nid == node);
 545
 546                         SEQ_printf(m, "numa_faults_memory, %d, %d, %d, %d, %ld\n",
 547                                 i, node, cpu_current, home_node, nr_faults);
 548                 }
 549         }
 550
 551         mpol_put(pol);
 552 #endif
 553 }
 554
 555 void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
 556 {
 557         unsigned long nr_switches;
 558
 559         SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, task_pid_nr(p),
 560                                                 get_nr_threads(p));
 561         SEQ_printf(m,
 562                 "---------------------------------------------------------"
 563                 "----------\n");
 564 #define __P(F) \
 565         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
 566 #define P(F) \
 567         SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
 568 #define __PN(F) \
 569         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
 570 #define PN(F) \
 571         SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
 572
 573         PN(se.exec_start);
 574         PN(se.vruntime);
 575         PN(se.sum_exec_runtime);
 576
 577         nr_switches = p->nvcsw + p->nivcsw;
 578
 579 #ifdef CONFIG_SCHEDSTATS
 580         PN(se.statistics.wait_start);
 581         PN(se.statistics.sleep_start);
 582         PN(se.statistics.block_start);
 583         PN(se.statistics.sleep_max);
 584         PN(se.statistics.block_max);
 585         PN(se.statistics.exec_max);
 586         PN(se.statistics.slice_max);
 587         PN(se.statistics.wait_max);
 588         PN(se.statistics.wait_sum);
 589         P(se.statistics.wait_count);
 590         PN(se.statistics.iowait_sum);
 591         P(se.statistics.iowait_count);
 592         P(se.nr_migrations);
 593         P(se.statistics.nr_migrations_cold);
 594         P(se.statistics.nr_failed_migrations_affine);
 595         P(se.statistics.nr_failed_migrations_running);
 596         P(se.statistics.nr_failed_migrations_hot);
 597         P(se.statistics.nr_forced_migrations);
 598         P(se.statistics.nr_wakeups);
 599         P(se.statistics.nr_wakeups_sync);
 600         P(se.statistics.nr_wakeups_migrate);
 601         P(se.statistics.nr_wakeups_local);
 602         P(se.statistics.nr_wakeups_remote);
 603         P(se.statistics.nr_wakeups_affine);
 604         P(se.statistics.nr_wakeups_affine_attempts);
 605         P(se.statistics.nr_wakeups_passive);
 606         P(se.statistics.nr_wakeups_idle);
 607
 608         {
 609                 u64 avg_atom, avg_per_cpu;
 610
 611                 avg_atom = p->se.sum_exec_runtime;
 612                 if (nr_switches)
 613                         avg_atom = div64_ul(avg_atom, nr_switches);
 614                 else
 615                         avg_atom = -1LL;
 616
 617                 avg_per_cpu = p->se.sum_exec_runtime;
 618                 if (p->se.nr_migrations) {
 619                         avg_per_cpu = div64_u64(avg_per_cpu,
 620                                                 p->se.nr_migrations);
 621                 } else {
 622                         avg_per_cpu = -1LL;
 623                 }
 624
 625                 __PN(avg_atom);
 626                 __PN(avg_per_cpu);
 627         }
 628 #endif
 629         __P(nr_switches);
 630         SEQ_printf(m, "%-45s:%21Ld\n",
 631                    "nr_voluntary_switches", (long long)p->nvcsw);
 632         SEQ_printf(m, "%-45s:%21Ld\n",
 633                    "nr_involuntary_switches", (long long)p->nivcsw);
 634
 635         P(se.load.weight);
 636 #ifdef CONFIG_SMP
 637         P(se.avg.runnable_avg_sum);
 638         P(se.avg.runnable_avg_period);
 639         P(se.avg.load_avg_contrib);
 640         P(se.avg.decay_count);
 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 }