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Ingo Molnar43ae34c2007-07-09 18:52:00 +02001/*
Peter Zijlstra391e43d2011-11-15 17:14:39 +01002 * kernel/sched/debug.c
Ingo Molnar43ae34c2007-07-09 18:52:00 +02003 *
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>
Ingo Molnar589ee622017-02-04 00:16:44 +010014#include <linux/sched/mm.h>
Ingo Molnarf719ff92017-02-06 10:57:33 +010015#include <linux/sched/task.h>
Ingo Molnar43ae34c2007-07-09 18:52:00 +020016#include <linux/seq_file.h>
17#include <linux/kallsyms.h>
18#include <linux/utsname.h>
Ingo Molnarb32e86b2013-10-07 11:29:30 +010019#include <linux/mempolicy.h>
Steven Rostedt (Red Hat)d6ca41d2016-02-22 16:26:50 -050020#include <linux/debugfs.h>
Ingo Molnar43ae34c2007-07-09 18:52:00 +020021
Peter Zijlstra029632f2011-10-25 10:00:11 +020022#include "sched.h"
23
Bharata B Raoefe25c22011-01-11 15:41:54 +053024static DEFINE_SPINLOCK(sched_debug_lock);
25
Ingo Molnar43ae34c2007-07-09 18:52:00 +020026/*
27 * This allows printing both to /proc/sched_debug and
28 * to the console
29 */
30#define SEQ_printf(m, x...) \
31 do { \
32 if (m) \
33 seq_printf(m, x); \
34 else \
35 printk(x); \
36 } while (0)
37
Ingo Molnaref83a572007-10-15 17:00:08 +020038/*
39 * Ease the printing of nsec fields:
40 */
Ingo Molnar90b26282007-12-30 17:24:35 +010041static long long nsec_high(unsigned long long nsec)
Ingo Molnaref83a572007-10-15 17:00:08 +020042{
Ingo Molnar90b26282007-12-30 17:24:35 +010043 if ((long long)nsec < 0) {
Ingo Molnaref83a572007-10-15 17:00:08 +020044 nsec = -nsec;
45 do_div(nsec, 1000000);
46 return -nsec;
47 }
48 do_div(nsec, 1000000);
49
50 return nsec;
51}
52
Ingo Molnar90b26282007-12-30 17:24:35 +010053static unsigned long nsec_low(unsigned long long nsec)
Ingo Molnaref83a572007-10-15 17:00:08 +020054{
Ingo Molnar90b26282007-12-30 17:24:35 +010055 if ((long long)nsec < 0)
Ingo Molnaref83a572007-10-15 17:00:08 +020056 nsec = -nsec;
57
58 return do_div(nsec, 1000000);
59}
60
61#define SPLIT_NS(x) nsec_high(x), nsec_low(x)
62
Steven Rostedt (Red Hat)d6ca41d2016-02-22 16:26:50 -050063#define SCHED_FEAT(name, enabled) \
64 #name ,
65
66static const char * const sched_feat_names[] = {
67#include "features.h"
68};
69
70#undef SCHED_FEAT
71
72static int sched_feat_show(struct seq_file *m, void *v)
73{
74 int i;
75
76 for (i = 0; i < __SCHED_FEAT_NR; i++) {
77 if (!(sysctl_sched_features & (1UL << i)))
78 seq_puts(m, "NO_");
79 seq_printf(m, "%s ", sched_feat_names[i]);
80 }
81 seq_puts(m, "\n");
82
83 return 0;
84}
85
86#ifdef HAVE_JUMP_LABEL
87
88#define jump_label_key__true STATIC_KEY_INIT_TRUE
89#define jump_label_key__false STATIC_KEY_INIT_FALSE
90
91#define SCHED_FEAT(name, enabled) \
92 jump_label_key__##enabled ,
93
94struct static_key sched_feat_keys[__SCHED_FEAT_NR] = {
95#include "features.h"
96};
97
98#undef SCHED_FEAT
99
100static void sched_feat_disable(int i)
101{
102 static_key_disable(&sched_feat_keys[i]);
103}
104
105static void sched_feat_enable(int i)
106{
107 static_key_enable(&sched_feat_keys[i]);
108}
109#else
110static void sched_feat_disable(int i) { };
111static void sched_feat_enable(int i) { };
112#endif /* HAVE_JUMP_LABEL */
113
114static int sched_feat_set(char *cmp)
115{
116 int i;
117 int neg = 0;
118
119 if (strncmp(cmp, "NO_", 3) == 0) {
120 neg = 1;
121 cmp += 3;
122 }
123
124 for (i = 0; i < __SCHED_FEAT_NR; i++) {
125 if (strcmp(cmp, sched_feat_names[i]) == 0) {
126 if (neg) {
127 sysctl_sched_features &= ~(1UL << i);
128 sched_feat_disable(i);
129 } else {
130 sysctl_sched_features |= (1UL << i);
131 sched_feat_enable(i);
132 }
133 break;
134 }
135 }
136
137 return i;
138}
139
140static ssize_t
141sched_feat_write(struct file *filp, const char __user *ubuf,
142 size_t cnt, loff_t *ppos)
143{
144 char buf[64];
145 char *cmp;
146 int i;
147 struct inode *inode;
148
149 if (cnt > 63)
150 cnt = 63;
151
152 if (copy_from_user(&buf, ubuf, cnt))
153 return -EFAULT;
154
155 buf[cnt] = 0;
156 cmp = strstrip(buf);
157
158 /* Ensure the static_key remains in a consistent state */
159 inode = file_inode(filp);
160 inode_lock(inode);
161 i = sched_feat_set(cmp);
162 inode_unlock(inode);
163 if (i == __SCHED_FEAT_NR)
164 return -EINVAL;
165
166 *ppos += cnt;
167
168 return cnt;
169}
170
171static int sched_feat_open(struct inode *inode, struct file *filp)
172{
173 return single_open(filp, sched_feat_show, NULL);
174}
175
176static const struct file_operations sched_feat_fops = {
177 .open = sched_feat_open,
178 .write = sched_feat_write,
179 .read = seq_read,
180 .llseek = seq_lseek,
181 .release = single_release,
182};
183
184static __init int sched_init_debug(void)
185{
186 debugfs_create_file("sched_features", 0644, NULL, NULL,
187 &sched_feat_fops);
188
189 return 0;
190}
191late_initcall(sched_init_debug);
192
Steven Rostedt (Red Hat)3866e842016-02-22 16:26:51 -0500193#ifdef CONFIG_SMP
194
195#ifdef CONFIG_SYSCTL
196
197static struct ctl_table sd_ctl_dir[] = {
198 {
199 .procname = "sched_domain",
200 .mode = 0555,
201 },
202 {}
203};
204
205static struct ctl_table sd_ctl_root[] = {
206 {
207 .procname = "kernel",
208 .mode = 0555,
209 .child = sd_ctl_dir,
210 },
211 {}
212};
213
214static struct ctl_table *sd_alloc_ctl_entry(int n)
215{
216 struct ctl_table *entry =
217 kcalloc(n, sizeof(struct ctl_table), GFP_KERNEL);
218
219 return entry;
220}
221
222static void sd_free_ctl_entry(struct ctl_table **tablep)
223{
224 struct ctl_table *entry;
225
226 /*
227 * In the intermediate directories, both the child directory and
228 * procname are dynamically allocated and could fail but the mode
229 * will always be set. In the lowest directory the names are
230 * static strings and all have proc handlers.
231 */
232 for (entry = *tablep; entry->mode; entry++) {
233 if (entry->child)
234 sd_free_ctl_entry(&entry->child);
235 if (entry->proc_handler == NULL)
236 kfree(entry->procname);
237 }
238
239 kfree(*tablep);
240 *tablep = NULL;
241}
242
243static int min_load_idx = 0;
244static int max_load_idx = CPU_LOAD_IDX_MAX-1;
245
246static void
247set_table_entry(struct ctl_table *entry,
248 const char *procname, void *data, int maxlen,
249 umode_t mode, proc_handler *proc_handler,
250 bool load_idx)
251{
252 entry->procname = procname;
253 entry->data = data;
254 entry->maxlen = maxlen;
255 entry->mode = mode;
256 entry->proc_handler = proc_handler;
257
258 if (load_idx) {
259 entry->extra1 = &min_load_idx;
260 entry->extra2 = &max_load_idx;
261 }
262}
263
264static struct ctl_table *
265sd_alloc_ctl_domain_table(struct sched_domain *sd)
266{
267 struct ctl_table *table = sd_alloc_ctl_entry(14);
268
269 if (table == NULL)
270 return NULL;
271
272 set_table_entry(&table[0], "min_interval", &sd->min_interval,
273 sizeof(long), 0644, proc_doulongvec_minmax, false);
274 set_table_entry(&table[1], "max_interval", &sd->max_interval,
275 sizeof(long), 0644, proc_doulongvec_minmax, false);
276 set_table_entry(&table[2], "busy_idx", &sd->busy_idx,
277 sizeof(int), 0644, proc_dointvec_minmax, true);
278 set_table_entry(&table[3], "idle_idx", &sd->idle_idx,
279 sizeof(int), 0644, proc_dointvec_minmax, true);
280 set_table_entry(&table[4], "newidle_idx", &sd->newidle_idx,
281 sizeof(int), 0644, proc_dointvec_minmax, true);
282 set_table_entry(&table[5], "wake_idx", &sd->wake_idx,
283 sizeof(int), 0644, proc_dointvec_minmax, true);
284 set_table_entry(&table[6], "forkexec_idx", &sd->forkexec_idx,
285 sizeof(int), 0644, proc_dointvec_minmax, true);
286 set_table_entry(&table[7], "busy_factor", &sd->busy_factor,
287 sizeof(int), 0644, proc_dointvec_minmax, false);
288 set_table_entry(&table[8], "imbalance_pct", &sd->imbalance_pct,
289 sizeof(int), 0644, proc_dointvec_minmax, false);
290 set_table_entry(&table[9], "cache_nice_tries",
291 &sd->cache_nice_tries,
292 sizeof(int), 0644, proc_dointvec_minmax, false);
293 set_table_entry(&table[10], "flags", &sd->flags,
294 sizeof(int), 0644, proc_dointvec_minmax, false);
295 set_table_entry(&table[11], "max_newidle_lb_cost",
296 &sd->max_newidle_lb_cost,
297 sizeof(long), 0644, proc_doulongvec_minmax, false);
298 set_table_entry(&table[12], "name", sd->name,
299 CORENAME_MAX_SIZE, 0444, proc_dostring, false);
300 /* &table[13] is terminator */
301
302 return table;
303}
304
305static struct ctl_table *sd_alloc_ctl_cpu_table(int cpu)
306{
307 struct ctl_table *entry, *table;
308 struct sched_domain *sd;
309 int domain_num = 0, i;
310 char buf[32];
311
312 for_each_domain(cpu, sd)
313 domain_num++;
314 entry = table = sd_alloc_ctl_entry(domain_num + 1);
315 if (table == NULL)
316 return NULL;
317
318 i = 0;
319 for_each_domain(cpu, sd) {
320 snprintf(buf, 32, "domain%d", i);
321 entry->procname = kstrdup(buf, GFP_KERNEL);
322 entry->mode = 0555;
323 entry->child = sd_alloc_ctl_domain_table(sd);
324 entry++;
325 i++;
326 }
327 return table;
328}
329
330static struct ctl_table_header *sd_sysctl_header;
331void register_sched_domain_sysctl(void)
332{
333 int i, cpu_num = num_possible_cpus();
334 struct ctl_table *entry = sd_alloc_ctl_entry(cpu_num + 1);
335 char buf[32];
336
337 WARN_ON(sd_ctl_dir[0].child);
338 sd_ctl_dir[0].child = entry;
339
340 if (entry == NULL)
341 return;
342
343 for_each_possible_cpu(i) {
344 snprintf(buf, 32, "cpu%d", i);
345 entry->procname = kstrdup(buf, GFP_KERNEL);
346 entry->mode = 0555;
347 entry->child = sd_alloc_ctl_cpu_table(i);
348 entry++;
349 }
350
351 WARN_ON(sd_sysctl_header);
352 sd_sysctl_header = register_sysctl_table(sd_ctl_root);
353}
354
355/* may be called multiple times per register */
356void unregister_sched_domain_sysctl(void)
357{
358 unregister_sysctl_table(sd_sysctl_header);
359 sd_sysctl_header = NULL;
360 if (sd_ctl_dir[0].child)
361 sd_free_ctl_entry(&sd_ctl_dir[0].child);
362}
363#endif /* CONFIG_SYSCTL */
364#endif /* CONFIG_SMP */
365
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530366#ifdef CONFIG_FAIR_GROUP_SCHED
Mike Galbraith5091faa2010-11-30 14:18:03 +0100367static void print_cfs_group_stats(struct seq_file *m, int cpu, struct task_group *tg)
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530368{
369 struct sched_entity *se = tg->se[cpu];
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530370
371#define P(F) \
372 SEQ_printf(m, " .%-30s: %lld\n", #F, (long long)F)
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500373#define P_SCHEDSTAT(F) \
374 SEQ_printf(m, " .%-30s: %lld\n", #F, (long long)schedstat_val(F))
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530375#define PN(F) \
376 SEQ_printf(m, " .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)F))
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500377#define PN_SCHEDSTAT(F) \
378 SEQ_printf(m, " .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)schedstat_val(F)))
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530379
Yuyang Ducd126af2015-07-15 08:04:36 +0800380 if (!se)
Ben Segall18bf2802012-10-04 12:51:20 +0200381 return;
Ben Segall18bf2802012-10-04 12:51:20 +0200382
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530383 PN(se->exec_start);
384 PN(se->vruntime);
385 PN(se->sum_exec_runtime);
Mel Gormancb251762016-02-05 09:08:36 +0000386 if (schedstat_enabled()) {
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500387 PN_SCHEDSTAT(se->statistics.wait_start);
388 PN_SCHEDSTAT(se->statistics.sleep_start);
389 PN_SCHEDSTAT(se->statistics.block_start);
390 PN_SCHEDSTAT(se->statistics.sleep_max);
391 PN_SCHEDSTAT(se->statistics.block_max);
392 PN_SCHEDSTAT(se->statistics.exec_max);
393 PN_SCHEDSTAT(se->statistics.slice_max);
394 PN_SCHEDSTAT(se->statistics.wait_max);
395 PN_SCHEDSTAT(se->statistics.wait_sum);
396 P_SCHEDSTAT(se->statistics.wait_count);
Mel Gormancb251762016-02-05 09:08:36 +0000397 }
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530398 P(se->load.weight);
Paul Turner9d85f212012-10-04 13:18:29 +0200399#ifdef CONFIG_SMP
Yuyang Du9d89c252015-07-15 08:04:37 +0800400 P(se->avg.load_avg);
401 P(se->avg.util_avg);
Paul Turner9d85f212012-10-04 13:18:29 +0200402#endif
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500403
404#undef PN_SCHEDSTAT
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530405#undef PN
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500406#undef P_SCHEDSTAT
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530407#undef P
408}
409#endif
410
Bharata B Raoefe25c22011-01-11 15:41:54 +0530411#ifdef CONFIG_CGROUP_SCHED
412static char group_path[PATH_MAX];
413
414static char *task_group_path(struct task_group *tg)
415{
Bharata B Rao8ecedd72011-01-11 15:42:57 +0530416 if (autogroup_path(tg, group_path, PATH_MAX))
417 return group_path;
418
Tejun Heo4c737b42016-08-10 11:23:44 -0400419 cgroup_path(tg->css.cgroup, group_path, PATH_MAX);
420 return group_path;
Bharata B Raoefe25c22011-01-11 15:41:54 +0530421}
422#endif
423
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200424static void
Ingo Molnara48da482007-08-09 11:16:51 +0200425print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200426{
427 if (rq->curr == p)
428 SEQ_printf(m, "R");
429 else
430 SEQ_printf(m, " ");
431
Ingo Molnaref83a572007-10-15 17:00:08 +0200432 SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ",
Peter Zijlstrafc840912013-09-09 13:01:41 +0200433 p->comm, task_pid_nr(p),
Ingo Molnaref83a572007-10-15 17:00:08 +0200434 SPLIT_NS(p->se.vruntime),
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200435 (long long)(p->nvcsw + p->nivcsw),
Al Viro6f605d82007-08-06 04:26:59 +0100436 p->prio);
Josh Poimboeuf9c572592016-06-03 17:58:40 -0500437
Srikar Dronamraju33d61762015-06-08 13:40:39 +0530438 SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
Josh Poimboeuf20e1d482016-06-17 12:43:25 -0500439 SPLIT_NS(schedstat_val_or_zero(p->se.statistics.wait_sum)),
Srikar Dronamraju33d61762015-06-08 13:40:39 +0530440 SPLIT_NS(p->se.sum_exec_runtime),
Josh Poimboeuf20e1d482016-06-17 12:43:25 -0500441 SPLIT_NS(schedstat_val_or_zero(p->se.statistics.sum_sleep_runtime)));
Josh Poimboeuf9c572592016-06-03 17:58:40 -0500442
Ingo Molnarb32e86b2013-10-07 11:29:30 +0100443#ifdef CONFIG_NUMA_BALANCING
Srikar Dronamrajue3d24d02015-06-25 22:51:42 +0530444 SEQ_printf(m, " %d %d", task_node(p), task_numa_group_id(p));
Ingo Molnarb32e86b2013-10-07 11:29:30 +0100445#endif
Bharata B Raoefe25c22011-01-11 15:41:54 +0530446#ifdef CONFIG_CGROUP_SCHED
447 SEQ_printf(m, " %s", task_group_path(task_group(p)));
448#endif
Peter Zijlstrad19ca302008-04-19 19:45:00 +0200449
Peter Zijlstrad19ca302008-04-19 19:45:00 +0200450 SEQ_printf(m, "\n");
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200451}
452
Ingo Molnara48da482007-08-09 11:16:51 +0200453static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu)
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200454{
455 struct task_struct *g, *p;
456
457 SEQ_printf(m,
458 "\nrunnable tasks:\n"
Mike Galbraithc86da3a2007-10-15 17:00:08 +0200459 " task PID tree-key switches prio"
Srikar Dronamrajuc5f3ab12015-06-08 13:40:40 +0530460 " wait-time sum-exec sum-sleep\n"
Ingo Molnar1a75b942007-10-15 17:00:08 +0200461 "------------------------------------------------------"
Mike Galbraithc86da3a2007-10-15 17:00:08 +0200462 "----------------------------------------------------\n");
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200463
Oleg Nesterov5bd96ab2014-09-21 21:33:41 +0200464 rcu_read_lock();
Oleg Nesterovd38e83c2014-08-13 21:19:56 +0200465 for_each_process_thread(g, p) {
Ingo Molnarb32e86b2013-10-07 11:29:30 +0100466 if (task_cpu(p) != rq_cpu)
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200467 continue;
468
Ingo Molnara48da482007-08-09 11:16:51 +0200469 print_task(m, rq, p);
Oleg Nesterovd38e83c2014-08-13 21:19:56 +0200470 }
Oleg Nesterov5bd96ab2014-09-21 21:33:41 +0200471 rcu_read_unlock();
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200472}
473
Ingo Molnar5cef9ec2007-08-09 11:16:47 +0200474void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200475{
Ingo Molnar86d95602007-10-15 17:00:06 +0200476 s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
477 spread, rq0_min_vruntime, spread0;
Hitoshi Mitake348ec612009-06-17 22:20:55 +0900478 struct rq *rq = cpu_rq(cpu);
Ingo Molnar67e12ea2007-10-15 17:00:05 +0200479 struct sched_entity *last;
480 unsigned long flags;
481
Bharata B Raoefe25c22011-01-11 15:41:54 +0530482#ifdef CONFIG_FAIR_GROUP_SCHED
483 SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, task_group_path(cfs_rq->tg));
484#else
Peter Zijlstraada18de2008-06-19 14:22:24 +0200485 SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
Bharata B Raoefe25c22011-01-11 15:41:54 +0530486#endif
Ingo Molnaref83a572007-10-15 17:00:08 +0200487 SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock",
488 SPLIT_NS(cfs_rq->exec_clock));
Ingo Molnar67e12ea2007-10-15 17:00:05 +0200489
Thomas Gleixner05fa7852009-11-17 14:28:38 +0100490 raw_spin_lock_irqsave(&rq->lock, flags);
Ingo Molnar67e12ea2007-10-15 17:00:05 +0200491 if (cfs_rq->rb_leftmost)
Rik van Rielac53db52011-02-01 09:51:03 -0500492 MIN_vruntime = (__pick_first_entity(cfs_rq))->vruntime;
Ingo Molnar67e12ea2007-10-15 17:00:05 +0200493 last = __pick_last_entity(cfs_rq);
494 if (last)
495 max_vruntime = last->vruntime;
Peter Zijlstra5ac5c4d2008-11-10 10:46:32 +0100496 min_vruntime = cfs_rq->min_vruntime;
Hitoshi Mitake348ec612009-06-17 22:20:55 +0900497 rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime;
Thomas Gleixner05fa7852009-11-17 14:28:38 +0100498 raw_spin_unlock_irqrestore(&rq->lock, flags);
Ingo Molnaref83a572007-10-15 17:00:08 +0200499 SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "MIN_vruntime",
500 SPLIT_NS(MIN_vruntime));
501 SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "min_vruntime",
502 SPLIT_NS(min_vruntime));
503 SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "max_vruntime",
504 SPLIT_NS(max_vruntime));
Ingo Molnar67e12ea2007-10-15 17:00:05 +0200505 spread = max_vruntime - MIN_vruntime;
Ingo Molnaref83a572007-10-15 17:00:08 +0200506 SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread",
507 SPLIT_NS(spread));
Ingo Molnar86d95602007-10-15 17:00:06 +0200508 spread0 = min_vruntime - rq0_min_vruntime;
Ingo Molnaref83a572007-10-15 17:00:08 +0200509 SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread0",
510 SPLIT_NS(spread0));
Peter Zijlstra5ac5c4d2008-11-10 10:46:32 +0100511 SEQ_printf(m, " .%-30s: %d\n", "nr_spread_over",
Peter Zijlstraddc97292007-10-15 17:00:10 +0200512 cfs_rq->nr_spread_over);
Peter Zijlstrac82513e2012-04-26 13:12:27 +0200513 SEQ_printf(m, " .%-30s: %d\n", "nr_running", cfs_rq->nr_running);
Peter Zijlstra2069dd72010-11-15 15:47:00 -0800514 SEQ_printf(m, " .%-30s: %ld\n", "load", cfs_rq->load.weight);
Peter Zijlstrac09595f2008-06-27 13:41:14 +0200515#ifdef CONFIG_SMP
Yuyang Du9d89c252015-07-15 08:04:37 +0800516 SEQ_printf(m, " .%-30s: %lu\n", "load_avg",
517 cfs_rq->avg.load_avg);
Yuyang Du13962232015-07-15 08:04:41 +0800518 SEQ_printf(m, " .%-30s: %lu\n", "runnable_load_avg",
519 cfs_rq->runnable_load_avg);
Yuyang Du9d89c252015-07-15 08:04:37 +0800520 SEQ_printf(m, " .%-30s: %lu\n", "util_avg",
521 cfs_rq->avg.util_avg);
522 SEQ_printf(m, " .%-30s: %ld\n", "removed_load_avg",
523 atomic_long_read(&cfs_rq->removed_load_avg));
524 SEQ_printf(m, " .%-30s: %ld\n", "removed_util_avg",
525 atomic_long_read(&cfs_rq->removed_util_avg));
Alex Shi333bb862013-06-28 19:10:35 +0800526#ifdef CONFIG_FAIR_GROUP_SCHED
Yuyang Du9d89c252015-07-15 08:04:37 +0800527 SEQ_printf(m, " .%-30s: %lu\n", "tg_load_avg_contrib",
528 cfs_rq->tg_load_avg_contrib);
Alex Shi333bb862013-06-28 19:10:35 +0800529 SEQ_printf(m, " .%-30s: %ld\n", "tg_load_avg",
530 atomic_long_read(&cfs_rq->tg->load_avg));
Peter Zijlstrac09595f2008-06-27 13:41:14 +0200531#endif
Alex Shi333bb862013-06-28 19:10:35 +0800532#endif
Ben Segallf9f9ffc2013-10-16 11:16:32 -0700533#ifdef CONFIG_CFS_BANDWIDTH
Ben Segallf9f9ffc2013-10-16 11:16:32 -0700534 SEQ_printf(m, " .%-30s: %d\n", "throttled",
535 cfs_rq->throttled);
536 SEQ_printf(m, " .%-30s: %d\n", "throttle_count",
537 cfs_rq->throttle_count);
538#endif
Peter Zijlstra2069dd72010-11-15 15:47:00 -0800539
Alex Shi333bb862013-06-28 19:10:35 +0800540#ifdef CONFIG_FAIR_GROUP_SCHED
Bharata B Raoff9b48c2008-11-10 21:34:09 +0530541 print_cfs_group_stats(m, cpu, cfs_rq->tg);
Peter Zijlstrac09595f2008-06-27 13:41:14 +0200542#endif
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200543}
544
Peter Zijlstraada18de2008-06-19 14:22:24 +0200545void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
546{
Bharata B Raoefe25c22011-01-11 15:41:54 +0530547#ifdef CONFIG_RT_GROUP_SCHED
548 SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, task_group_path(rt_rq->tg));
549#else
Peter Zijlstraada18de2008-06-19 14:22:24 +0200550 SEQ_printf(m, "\nrt_rq[%d]:\n", cpu);
Bharata B Raoefe25c22011-01-11 15:41:54 +0530551#endif
Peter Zijlstraada18de2008-06-19 14:22:24 +0200552
553#define P(x) \
554 SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rt_rq->x))
Daniel Bristot de Oliveira48365b32017-06-26 17:07:14 +0200555#define PU(x) \
556 SEQ_printf(m, " .%-30s: %lu\n", #x, (unsigned long)(rt_rq->x))
Peter Zijlstraada18de2008-06-19 14:22:24 +0200557#define PN(x) \
558 SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x))
559
Daniel Bristot de Oliveira48365b32017-06-26 17:07:14 +0200560 PU(rt_nr_running);
561#ifdef CONFIG_SMP
562 PU(rt_nr_migratory);
563#endif
Peter Zijlstraada18de2008-06-19 14:22:24 +0200564 P(rt_throttled);
565 PN(rt_time);
566 PN(rt_runtime);
567
568#undef PN
Daniel Bristot de Oliveira48365b32017-06-26 17:07:14 +0200569#undef PU
Peter Zijlstraada18de2008-06-19 14:22:24 +0200570#undef P
571}
572
Wanpeng Liacb32132014-10-31 06:39:33 +0800573void print_dl_rq(struct seq_file *m, int cpu, struct dl_rq *dl_rq)
574{
Steven Rostedt (Red Hat)ef477182016-02-22 16:26:52 -0500575 struct dl_bw *dl_bw;
576
Wanpeng Liacb32132014-10-31 06:39:33 +0800577 SEQ_printf(m, "\ndl_rq[%d]:\n", cpu);
Daniel Bristot de Oliveira48365b32017-06-26 17:07:14 +0200578
579#define PU(x) \
580 SEQ_printf(m, " .%-30s: %lu\n", #x, (unsigned long)(dl_rq->x))
581
582 PU(dl_nr_running);
Steven Rostedt (Red Hat)ef477182016-02-22 16:26:52 -0500583#ifdef CONFIG_SMP
Daniel Bristot de Oliveira48365b32017-06-26 17:07:14 +0200584 PU(dl_nr_migratory);
Steven Rostedt (Red Hat)ef477182016-02-22 16:26:52 -0500585 dl_bw = &cpu_rq(cpu)->rd->dl_bw;
586#else
587 dl_bw = &dl_rq->dl_bw;
588#endif
589 SEQ_printf(m, " .%-30s: %lld\n", "dl_bw->bw", dl_bw->bw);
590 SEQ_printf(m, " .%-30s: %lld\n", "dl_bw->total_bw", dl_bw->total_bw);
Daniel Bristot de Oliveira48365b32017-06-26 17:07:14 +0200591
592#undef PU
Wanpeng Liacb32132014-10-31 06:39:33 +0800593}
594
Peter Zijlstra5bb6b1e2010-11-19 21:11:09 +0100595extern __read_mostly int sched_clock_running;
596
Ingo Molnara48da482007-08-09 11:16:51 +0200597static void print_cpu(struct seq_file *m, int cpu)
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200598{
Hitoshi Mitake348ec612009-06-17 22:20:55 +0900599 struct rq *rq = cpu_rq(cpu);
Bharata B Raoefe25c22011-01-11 15:41:54 +0530600 unsigned long flags;
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200601
602#ifdef CONFIG_X86
603 {
604 unsigned int freq = cpu_khz ? : 1;
605
Nathan Zimmerbbbfeac2013-02-21 15:15:09 -0800606 SEQ_printf(m, "cpu#%d, %u.%03u MHz\n",
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200607 cpu, freq / 1000, (freq % 1000));
608 }
609#else
Nathan Zimmerbbbfeac2013-02-21 15:15:09 -0800610 SEQ_printf(m, "cpu#%d\n", cpu);
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200611#endif
612
Peter Zijlstra13e099d2012-05-14 14:34:00 +0200613#define P(x) \
614do { \
615 if (sizeof(rq->x) == 4) \
616 SEQ_printf(m, " .%-30s: %ld\n", #x, (long)(rq->x)); \
617 else \
618 SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rq->x));\
619} while (0)
620
Ingo Molnaref83a572007-10-15 17:00:08 +0200621#define PN(x) \
622 SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x))
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200623
624 P(nr_running);
625 SEQ_printf(m, " .%-30s: %lu\n", "load",
Dmitry Adamushko495eca42007-10-15 17:00:06 +0200626 rq->load.weight);
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200627 P(nr_switches);
628 P(nr_load_updates);
629 P(nr_uninterruptible);
Ingo Molnaref83a572007-10-15 17:00:08 +0200630 PN(next_balance);
Peter Zijlstrafc840912013-09-09 13:01:41 +0200631 SEQ_printf(m, " .%-30s: %ld\n", "curr->pid", (long)(task_pid_nr(rq->curr)));
Ingo Molnaref83a572007-10-15 17:00:08 +0200632 PN(clock);
Peter Zijlstra5a537592015-01-05 11:18:12 +0100633 PN(clock_task);
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200634 P(cpu_load[0]);
635 P(cpu_load[1]);
636 P(cpu_load[2]);
637 P(cpu_load[3]);
638 P(cpu_load[4]);
639#undef P
Ingo Molnaref83a572007-10-15 17:00:08 +0200640#undef PN
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200641
Mike Galbraith1b9508f2009-11-04 17:53:50 +0100642#ifdef CONFIG_SMP
Wanpeng Lidb6ea2f2016-05-03 12:38:25 +0800643#define P64(n) SEQ_printf(m, " .%-30s: %Ld\n", #n, rq->n);
Mike Galbraith1b9508f2009-11-04 17:53:50 +0100644 P64(avg_idle);
Alex Shi37e6bae2014-01-23 18:39:54 +0800645 P64(max_idle_balance_cost);
Wanpeng Lidb6ea2f2016-05-03 12:38:25 +0800646#undef P64
Mike Galbraith1b9508f2009-11-04 17:53:50 +0100647#endif
Peter Zijlstra5ac5c4d2008-11-10 10:46:32 +0100648
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500649#define P(n) SEQ_printf(m, " .%-30s: %d\n", #n, schedstat_val(rq->n));
Mel Gormancb251762016-02-05 09:08:36 +0000650 if (schedstat_enabled()) {
651 P(yld_count);
652 P(sched_count);
653 P(sched_goidle);
654 P(ttwu_count);
655 P(ttwu_local);
656 }
Peter Zijlstra5ac5c4d2008-11-10 10:46:32 +0100657#undef P
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500658
Bharata B Raoefe25c22011-01-11 15:41:54 +0530659 spin_lock_irqsave(&sched_debug_lock, flags);
Ingo Molnar5cef9ec2007-08-09 11:16:47 +0200660 print_cfs_stats(m, cpu);
Peter Zijlstraada18de2008-06-19 14:22:24 +0200661 print_rt_stats(m, cpu);
Wanpeng Liacb32132014-10-31 06:39:33 +0800662 print_dl_stats(m, cpu);
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200663
Ingo Molnara48da482007-08-09 11:16:51 +0200664 print_rq(m, rq, cpu);
Bharata B Raoefe25c22011-01-11 15:41:54 +0530665 spin_unlock_irqrestore(&sched_debug_lock, flags);
Nathan Zimmerbbbfeac2013-02-21 15:15:09 -0800666 SEQ_printf(m, "\n");
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200667}
668
Christian Ehrhardt1983a922009-11-30 12:16:47 +0100669static const char *sched_tunable_scaling_names[] = {
670 "none",
671 "logaritmic",
672 "linear"
673};
674
Nathan Zimmerbbbfeac2013-02-21 15:15:09 -0800675static void sched_debug_header(struct seq_file *m)
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200676{
Peter Zijlstra5bb6b1e2010-11-19 21:11:09 +0100677 u64 ktime, sched_clk, cpu_clk;
678 unsigned long flags;
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200679
Peter Zijlstra5bb6b1e2010-11-19 21:11:09 +0100680 local_irq_save(flags);
681 ktime = ktime_to_ns(ktime_get());
682 sched_clk = sched_clock();
683 cpu_clk = local_clock();
684 local_irq_restore(flags);
685
Ingo Molnarb32e86b2013-10-07 11:29:30 +0100686 SEQ_printf(m, "Sched Debug Version: v0.11, %s %.*s\n",
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200687 init_utsname()->release,
688 (int)strcspn(init_utsname()->version, " "),
689 init_utsname()->version);
690
Peter Zijlstra5bb6b1e2010-11-19 21:11:09 +0100691#define P(x) \
692 SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x))
693#define PN(x) \
694 SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
695 PN(ktime);
696 PN(sched_clk);
697 PN(cpu_clk);
698 P(jiffies);
699#ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
Peter Zijlstra35af99e2013-11-28 19:38:42 +0100700 P(sched_clock_stable());
Peter Zijlstra5bb6b1e2010-11-19 21:11:09 +0100701#endif
702#undef PN
703#undef P
704
705 SEQ_printf(m, "\n");
706 SEQ_printf(m, "sysctl_sched\n");
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200707
Ingo Molnar1aa47312007-10-15 17:00:10 +0200708#define P(x) \
Ingo Molnard822cec2007-10-15 17:00:10 +0200709 SEQ_printf(m, " .%-40s: %Ld\n", #x, (long long)(x))
Ingo Molnar1aa47312007-10-15 17:00:10 +0200710#define PN(x) \
Ingo Molnard822cec2007-10-15 17:00:10 +0200711 SEQ_printf(m, " .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
Ingo Molnar1aa47312007-10-15 17:00:10 +0200712 PN(sysctl_sched_latency);
Peter Zijlstrab2be5e92007-11-09 22:39:37 +0100713 PN(sysctl_sched_min_granularity);
Ingo Molnar1aa47312007-10-15 17:00:10 +0200714 PN(sysctl_sched_wakeup_granularity);
Josh Hunteebef742010-07-19 12:31:16 -0700715 P(sysctl_sched_child_runs_first);
Ingo Molnar1aa47312007-10-15 17:00:10 +0200716 P(sysctl_sched_features);
717#undef PN
718#undef P
719
Nathan Zimmerbbbfeac2013-02-21 15:15:09 -0800720 SEQ_printf(m, " .%-40s: %d (%s)\n",
721 "sysctl_sched_tunable_scaling",
Christian Ehrhardt1983a922009-11-30 12:16:47 +0100722 sysctl_sched_tunable_scaling,
723 sched_tunable_scaling_names[sysctl_sched_tunable_scaling]);
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200724 SEQ_printf(m, "\n");
Nathan Zimmerbbbfeac2013-02-21 15:15:09 -0800725}
726
727static int sched_debug_show(struct seq_file *m, void *v)
728{
729 int cpu = (unsigned long)(v - 2);
730
731 if (cpu != -1)
732 print_cpu(m, cpu);
733 else
734 sched_debug_header(m);
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200735
736 return 0;
737}
738
Peter Zijlstra029632f2011-10-25 10:00:11 +0200739void sysrq_sched_debug_show(void)
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200740{
Nathan Zimmerbbbfeac2013-02-21 15:15:09 -0800741 int cpu;
742
743 sched_debug_header(NULL);
744 for_each_online_cpu(cpu)
745 print_cpu(NULL, cpu);
746
747}
748
749/*
750 * This itererator needs some explanation.
751 * It returns 1 for the header position.
752 * This means 2 is cpu 0.
753 * In a hotplugged system some cpus, including cpu 0, may be missing so we have
754 * to use cpumask_* to iterate over the cpus.
755 */
756static void *sched_debug_start(struct seq_file *file, loff_t *offset)
757{
758 unsigned long n = *offset;
759
760 if (n == 0)
761 return (void *) 1;
762
763 n--;
764
765 if (n > 0)
766 n = cpumask_next(n - 1, cpu_online_mask);
767 else
768 n = cpumask_first(cpu_online_mask);
769
770 *offset = n + 1;
771
772 if (n < nr_cpu_ids)
773 return (void *)(unsigned long)(n + 2);
774 return NULL;
775}
776
777static void *sched_debug_next(struct seq_file *file, void *data, loff_t *offset)
778{
779 (*offset)++;
780 return sched_debug_start(file, offset);
781}
782
783static void sched_debug_stop(struct seq_file *file, void *data)
784{
785}
786
787static const struct seq_operations sched_debug_sops = {
788 .start = sched_debug_start,
789 .next = sched_debug_next,
790 .stop = sched_debug_stop,
791 .show = sched_debug_show,
792};
793
794static int sched_debug_release(struct inode *inode, struct file *file)
795{
796 seq_release(inode, file);
797
798 return 0;
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200799}
800
801static int sched_debug_open(struct inode *inode, struct file *filp)
802{
Nathan Zimmerbbbfeac2013-02-21 15:15:09 -0800803 int ret = 0;
804
805 ret = seq_open(filp, &sched_debug_sops);
806
807 return ret;
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200808}
809
Arjan van de Ven0dbee3a2007-10-15 17:00:19 +0200810static const struct file_operations sched_debug_fops = {
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200811 .open = sched_debug_open,
812 .read = seq_read,
813 .llseek = seq_lseek,
Nathan Zimmerbbbfeac2013-02-21 15:15:09 -0800814 .release = sched_debug_release,
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200815};
816
817static int __init init_sched_debug_procfs(void)
818{
819 struct proc_dir_entry *pe;
820
Li Zefana9cf4dd2008-10-30 15:23:34 +0800821 pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops);
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200822 if (!pe)
823 return -ENOMEM;
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200824 return 0;
825}
826
827__initcall(init_sched_debug_procfs);
828
Ingo Molnarb32e86b2013-10-07 11:29:30 +0100829#define __P(F) \
830 SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
831#define P(F) \
832 SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
833#define __PN(F) \
834 SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
835#define PN(F) \
836 SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
837
838
Srikar Dronamraju397f2372015-06-25 22:51:43 +0530839#ifdef CONFIG_NUMA_BALANCING
840void print_numa_stats(struct seq_file *m, int node, unsigned long tsf,
841 unsigned long tpf, unsigned long gsf, unsigned long gpf)
842{
843 SEQ_printf(m, "numa_faults node=%d ", node);
844 SEQ_printf(m, "task_private=%lu task_shared=%lu ", tsf, tpf);
845 SEQ_printf(m, "group_private=%lu group_shared=%lu\n", gsf, gpf);
846}
847#endif
848
849
Ingo Molnarb32e86b2013-10-07 11:29:30 +0100850static void sched_show_numa(struct task_struct *p, struct seq_file *m)
851{
852#ifdef CONFIG_NUMA_BALANCING
853 struct mempolicy *pol;
Ingo Molnarb32e86b2013-10-07 11:29:30 +0100854
855 if (p->mm)
856 P(mm->numa_scan_seq);
857
858 task_lock(p);
859 pol = p->mempolicy;
860 if (pol && !(pol->flags & MPOL_F_MORON))
861 pol = NULL;
862 mpol_get(pol);
863 task_unlock(p);
864
Srikar Dronamraju397f2372015-06-25 22:51:43 +0530865 P(numa_pages_migrated);
866 P(numa_preferred_nid);
867 P(total_numa_faults);
868 SEQ_printf(m, "current_node=%d, numa_group_id=%d\n",
869 task_node(p), task_numa_group_id(p));
870 show_numa_stats(p, m);
Ingo Molnarb32e86b2013-10-07 11:29:30 +0100871 mpol_put(pol);
872#endif
873}
874
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200875void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
876{
Ingo Molnarcc367732007-10-15 17:00:18 +0200877 unsigned long nr_switches;
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200878
Peter Zijlstrafc840912013-09-09 13:01:41 +0200879 SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, task_pid_nr(p),
Oleg Nesterov5089a972010-05-26 14:43:22 -0700880 get_nr_threads(p));
Ingo Molnar2d92f222007-10-15 17:00:18 +0200881 SEQ_printf(m,
Kamalesh Babulaladd332a2013-06-27 22:20:05 +0530882 "---------------------------------------------------------"
883 "----------\n");
Ingo Molnarcc367732007-10-15 17:00:18 +0200884#define __P(F) \
Kamalesh Babulaladd332a2013-06-27 22:20:05 +0530885 SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F)
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200886#define P(F) \
Kamalesh Babulaladd332a2013-06-27 22:20:05 +0530887 SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F)
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500888#define P_SCHEDSTAT(F) \
889 SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)schedstat_val(p->F))
Ingo Molnarcc367732007-10-15 17:00:18 +0200890#define __PN(F) \
Kamalesh Babulaladd332a2013-06-27 22:20:05 +0530891 SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
Ingo Molnaref83a572007-10-15 17:00:08 +0200892#define PN(F) \
Kamalesh Babulaladd332a2013-06-27 22:20:05 +0530893 SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500894#define PN_SCHEDSTAT(F) \
895 SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)schedstat_val(p->F)))
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200896
Ingo Molnaref83a572007-10-15 17:00:08 +0200897 PN(se.exec_start);
898 PN(se.vruntime);
899 PN(se.sum_exec_runtime);
Ingo Molnar6cfb0d52007-08-02 17:41:40 +0200900
Ingo Molnarcc367732007-10-15 17:00:18 +0200901 nr_switches = p->nvcsw + p->nivcsw;
902
Ingo Molnarcc367732007-10-15 17:00:18 +0200903 P(se.nr_migrations);
Ingo Molnarcc367732007-10-15 17:00:18 +0200904
Mel Gormancb251762016-02-05 09:08:36 +0000905 if (schedstat_enabled()) {
Ingo Molnarcc367732007-10-15 17:00:18 +0200906 u64 avg_atom, avg_per_cpu;
907
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500908 PN_SCHEDSTAT(se.statistics.sum_sleep_runtime);
909 PN_SCHEDSTAT(se.statistics.wait_start);
910 PN_SCHEDSTAT(se.statistics.sleep_start);
911 PN_SCHEDSTAT(se.statistics.block_start);
912 PN_SCHEDSTAT(se.statistics.sleep_max);
913 PN_SCHEDSTAT(se.statistics.block_max);
914 PN_SCHEDSTAT(se.statistics.exec_max);
915 PN_SCHEDSTAT(se.statistics.slice_max);
916 PN_SCHEDSTAT(se.statistics.wait_max);
917 PN_SCHEDSTAT(se.statistics.wait_sum);
918 P_SCHEDSTAT(se.statistics.wait_count);
919 PN_SCHEDSTAT(se.statistics.iowait_sum);
920 P_SCHEDSTAT(se.statistics.iowait_count);
921 P_SCHEDSTAT(se.statistics.nr_migrations_cold);
922 P_SCHEDSTAT(se.statistics.nr_failed_migrations_affine);
923 P_SCHEDSTAT(se.statistics.nr_failed_migrations_running);
924 P_SCHEDSTAT(se.statistics.nr_failed_migrations_hot);
925 P_SCHEDSTAT(se.statistics.nr_forced_migrations);
926 P_SCHEDSTAT(se.statistics.nr_wakeups);
927 P_SCHEDSTAT(se.statistics.nr_wakeups_sync);
928 P_SCHEDSTAT(se.statistics.nr_wakeups_migrate);
929 P_SCHEDSTAT(se.statistics.nr_wakeups_local);
930 P_SCHEDSTAT(se.statistics.nr_wakeups_remote);
931 P_SCHEDSTAT(se.statistics.nr_wakeups_affine);
932 P_SCHEDSTAT(se.statistics.nr_wakeups_affine_attempts);
933 P_SCHEDSTAT(se.statistics.nr_wakeups_passive);
934 P_SCHEDSTAT(se.statistics.nr_wakeups_idle);
Mel Gormancb251762016-02-05 09:08:36 +0000935
Ingo Molnarcc367732007-10-15 17:00:18 +0200936 avg_atom = p->se.sum_exec_runtime;
937 if (nr_switches)
Mateusz Guzikb0ab99e2014-06-14 15:00:09 +0200938 avg_atom = div64_ul(avg_atom, nr_switches);
Ingo Molnarcc367732007-10-15 17:00:18 +0200939 else
940 avg_atom = -1LL;
941
942 avg_per_cpu = p->se.sum_exec_runtime;
Ingo Molnarc1a89742007-11-28 15:52:56 +0100943 if (p->se.nr_migrations) {
Roman Zippel6f6d6a12008-05-01 04:34:28 -0700944 avg_per_cpu = div64_u64(avg_per_cpu,
945 p->se.nr_migrations);
Ingo Molnarc1a89742007-11-28 15:52:56 +0100946 } else {
Ingo Molnarcc367732007-10-15 17:00:18 +0200947 avg_per_cpu = -1LL;
Ingo Molnarc1a89742007-11-28 15:52:56 +0100948 }
Ingo Molnarcc367732007-10-15 17:00:18 +0200949
950 __PN(avg_atom);
951 __PN(avg_per_cpu);
952 }
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500953
Ingo Molnarcc367732007-10-15 17:00:18 +0200954 __P(nr_switches);
Kamalesh Babulaladd332a2013-06-27 22:20:05 +0530955 SEQ_printf(m, "%-45s:%21Ld\n",
Ingo Molnarcc367732007-10-15 17:00:18 +0200956 "nr_voluntary_switches", (long long)p->nvcsw);
Kamalesh Babulaladd332a2013-06-27 22:20:05 +0530957 SEQ_printf(m, "%-45s:%21Ld\n",
Ingo Molnarcc367732007-10-15 17:00:18 +0200958 "nr_involuntary_switches", (long long)p->nivcsw);
959
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200960 P(se.load.weight);
Alex Shi333bb862013-06-28 19:10:35 +0800961#ifdef CONFIG_SMP
Yuyang Du9d89c252015-07-15 08:04:37 +0800962 P(se.avg.load_sum);
963 P(se.avg.util_sum);
964 P(se.avg.load_avg);
965 P(se.avg.util_avg);
966 P(se.avg.last_update_time);
Kamalesh Babulal939fd732013-06-25 13:33:36 +0530967#endif
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200968 P(policy);
969 P(prio);
Tommaso Cucinotta59f8c292016-10-26 11:17:17 +0200970 if (p->policy == SCHED_DEADLINE) {
971 P(dl.runtime);
972 P(dl.deadline);
973 }
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500974#undef PN_SCHEDSTAT
Ingo Molnaref83a572007-10-15 17:00:08 +0200975#undef PN
Ingo Molnarcc367732007-10-15 17:00:18 +0200976#undef __PN
Josh Poimboeuf4fa8d292016-06-17 12:43:26 -0500977#undef P_SCHEDSTAT
Ingo Molnarcc367732007-10-15 17:00:18 +0200978#undef P
979#undef __P
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200980
981 {
Ingo Molnar29d7b902008-11-16 08:07:15 +0100982 unsigned int this_cpu = raw_smp_processor_id();
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200983 u64 t0, t1;
984
Ingo Molnar29d7b902008-11-16 08:07:15 +0100985 t0 = cpu_clock(this_cpu);
986 t1 = cpu_clock(this_cpu);
Kamalesh Babulaladd332a2013-06-27 22:20:05 +0530987 SEQ_printf(m, "%-45s:%21Ld\n",
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200988 "clock-delta", (long long)(t1-t0));
989 }
Ingo Molnarb32e86b2013-10-07 11:29:30 +0100990
991 sched_show_numa(p, m);
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200992}
993
994void proc_sched_set_task(struct task_struct *p)
995{
Ingo Molnar6cfb0d52007-08-02 17:41:40 +0200996#ifdef CONFIG_SCHEDSTATS
Lucas De Marchi41acab82010-03-10 23:37:45 -0300997 memset(&p->se.statistics, 0, sizeof(p->se.statistics));
Ingo Molnar6cfb0d52007-08-02 17:41:40 +0200998#endif
Ingo Molnar43ae34c2007-07-09 18:52:00 +0200999}