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Commit | Line | Data |
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43ae34cb | 1 | /* |
391e43da | 2 | * kernel/sched/debug.c |
43ae34cb IM |
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 | ||
029632fb PZ |
19 | #include "sched.h" |
20 | ||
efe25c2c BR |
21 | static DEFINE_SPINLOCK(sched_debug_lock); |
22 | ||
43ae34cb IM |
23 | /* |
24 | * This allows printing both to /proc/sched_debug and | |
25 | * to the console | |
26 | */ | |
27 | #define SEQ_printf(m, x...) \ | |
28 | do { \ | |
29 | if (m) \ | |
30 | seq_printf(m, x); \ | |
31 | else \ | |
32 | printk(x); \ | |
33 | } while (0) | |
34 | ||
ef83a571 IM |
35 | /* |
36 | * Ease the printing of nsec fields: | |
37 | */ | |
90b2628f | 38 | static long long nsec_high(unsigned long long nsec) |
ef83a571 | 39 | { |
90b2628f | 40 | if ((long long)nsec < 0) { |
ef83a571 IM |
41 | nsec = -nsec; |
42 | do_div(nsec, 1000000); | |
43 | return -nsec; | |
44 | } | |
45 | do_div(nsec, 1000000); | |
46 | ||
47 | return nsec; | |
48 | } | |
49 | ||
90b2628f | 50 | static unsigned long nsec_low(unsigned long long nsec) |
ef83a571 | 51 | { |
90b2628f | 52 | if ((long long)nsec < 0) |
ef83a571 IM |
53 | nsec = -nsec; |
54 | ||
55 | return do_div(nsec, 1000000); | |
56 | } | |
57 | ||
58 | #define SPLIT_NS(x) nsec_high(x), nsec_low(x) | |
59 | ||
ff9b48c3 | 60 | #ifdef CONFIG_FAIR_GROUP_SCHED |
5091faa4 | 61 | static void print_cfs_group_stats(struct seq_file *m, int cpu, struct task_group *tg) |
ff9b48c3 BR |
62 | { |
63 | struct sched_entity *se = tg->se[cpu]; | |
ff9b48c3 BR |
64 | |
65 | #define P(F) \ | |
66 | SEQ_printf(m, " .%-30s: %lld\n", #F, (long long)F) | |
67 | #define PN(F) \ | |
68 | SEQ_printf(m, " .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)F)) | |
69 | ||
18bf2805 BS |
70 | if (!se) { |
71 | struct sched_avg *avg = &cpu_rq(cpu)->avg; | |
72 | P(avg->runnable_avg_sum); | |
73 | P(avg->runnable_avg_period); | |
74 | return; | |
75 | } | |
76 | ||
77 | ||
ff9b48c3 BR |
78 | PN(se->exec_start); |
79 | PN(se->vruntime); | |
80 | PN(se->sum_exec_runtime); | |
81 | #ifdef CONFIG_SCHEDSTATS | |
41acab88 LDM |
82 | PN(se->statistics.wait_start); |
83 | PN(se->statistics.sleep_start); | |
84 | PN(se->statistics.block_start); | |
85 | PN(se->statistics.sleep_max); | |
86 | PN(se->statistics.block_max); | |
87 | PN(se->statistics.exec_max); | |
88 | PN(se->statistics.slice_max); | |
89 | PN(se->statistics.wait_max); | |
90 | PN(se->statistics.wait_sum); | |
91 | P(se->statistics.wait_count); | |
ff9b48c3 BR |
92 | #endif |
93 | P(se->load.weight); | |
9d85f21c PT |
94 | #ifdef CONFIG_SMP |
95 | P(se->avg.runnable_avg_sum); | |
96 | P(se->avg.runnable_avg_period); | |
2dac754e | 97 | P(se->avg.load_avg_contrib); |
9ee474f5 | 98 | P(se->avg.decay_count); |
9d85f21c | 99 | #endif |
ff9b48c3 BR |
100 | #undef PN |
101 | #undef P | |
102 | } | |
103 | #endif | |
104 | ||
efe25c2c BR |
105 | #ifdef CONFIG_CGROUP_SCHED |
106 | static char group_path[PATH_MAX]; | |
107 | ||
108 | static char *task_group_path(struct task_group *tg) | |
109 | { | |
8ecedd7a BR |
110 | if (autogroup_path(tg, group_path, PATH_MAX)) |
111 | return group_path; | |
112 | ||
efe25c2c BR |
113 | cgroup_path(tg->css.cgroup, group_path, PATH_MAX); |
114 | return group_path; | |
115 | } | |
116 | #endif | |
117 | ||
43ae34cb | 118 | static void |
a48da48b | 119 | print_task(struct seq_file *m, struct rq *rq, struct task_struct *p) |
43ae34cb IM |
120 | { |
121 | if (rq->curr == p) | |
122 | SEQ_printf(m, "R"); | |
123 | else | |
124 | SEQ_printf(m, " "); | |
125 | ||
ef83a571 | 126 | SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ", |
43ae34cb | 127 | p->comm, p->pid, |
ef83a571 | 128 | SPLIT_NS(p->se.vruntime), |
43ae34cb | 129 | (long long)(p->nvcsw + p->nivcsw), |
6f605d83 | 130 | p->prio); |
6cfb0d5d | 131 | #ifdef CONFIG_SCHEDSTATS |
d19ca308 | 132 | SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld", |
ef83a571 IM |
133 | SPLIT_NS(p->se.vruntime), |
134 | SPLIT_NS(p->se.sum_exec_runtime), | |
41acab88 | 135 | SPLIT_NS(p->se.statistics.sum_sleep_runtime)); |
6cfb0d5d | 136 | #else |
d19ca308 | 137 | SEQ_printf(m, "%15Ld %15Ld %15Ld.%06ld %15Ld.%06ld %15Ld.%06ld", |
ef83a571 | 138 | 0LL, 0LL, 0LL, 0L, 0LL, 0L, 0LL, 0L); |
6cfb0d5d | 139 | #endif |
efe25c2c BR |
140 | #ifdef CONFIG_CGROUP_SCHED |
141 | SEQ_printf(m, " %s", task_group_path(task_group(p))); | |
142 | #endif | |
d19ca308 | 143 | |
d19ca308 | 144 | SEQ_printf(m, "\n"); |
43ae34cb IM |
145 | } |
146 | ||
a48da48b | 147 | static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu) |
43ae34cb IM |
148 | { |
149 | struct task_struct *g, *p; | |
ab63a633 | 150 | unsigned long flags; |
43ae34cb IM |
151 | |
152 | SEQ_printf(m, | |
153 | "\nrunnable tasks:\n" | |
c86da3a3 MG |
154 | " task PID tree-key switches prio" |
155 | " exec-runtime sum-exec sum-sleep\n" | |
1a75b94f | 156 | "------------------------------------------------------" |
c86da3a3 | 157 | "----------------------------------------------------\n"); |
43ae34cb | 158 | |
ab63a633 | 159 | read_lock_irqsave(&tasklist_lock, flags); |
43ae34cb IM |
160 | |
161 | do_each_thread(g, p) { | |
fd2f4419 | 162 | if (!p->on_rq || task_cpu(p) != rq_cpu) |
43ae34cb IM |
163 | continue; |
164 | ||
a48da48b | 165 | print_task(m, rq, p); |
43ae34cb IM |
166 | } while_each_thread(g, p); |
167 | ||
ab63a633 | 168 | read_unlock_irqrestore(&tasklist_lock, flags); |
43ae34cb IM |
169 | } |
170 | ||
5cef9eca | 171 | void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq) |
43ae34cb | 172 | { |
86d9560c IM |
173 | s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1, |
174 | spread, rq0_min_vruntime, spread0; | |
348ec61e | 175 | struct rq *rq = cpu_rq(cpu); |
67e12eac IM |
176 | struct sched_entity *last; |
177 | unsigned long flags; | |
178 | ||
efe25c2c BR |
179 | #ifdef CONFIG_FAIR_GROUP_SCHED |
180 | SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, task_group_path(cfs_rq->tg)); | |
181 | #else | |
ada18de2 | 182 | SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu); |
efe25c2c | 183 | #endif |
ef83a571 IM |
184 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock", |
185 | SPLIT_NS(cfs_rq->exec_clock)); | |
67e12eac | 186 | |
05fa785c | 187 | raw_spin_lock_irqsave(&rq->lock, flags); |
67e12eac | 188 | if (cfs_rq->rb_leftmost) |
ac53db59 | 189 | MIN_vruntime = (__pick_first_entity(cfs_rq))->vruntime; |
67e12eac IM |
190 | last = __pick_last_entity(cfs_rq); |
191 | if (last) | |
192 | max_vruntime = last->vruntime; | |
5ac5c4d6 | 193 | min_vruntime = cfs_rq->min_vruntime; |
348ec61e | 194 | rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime; |
05fa785c | 195 | raw_spin_unlock_irqrestore(&rq->lock, flags); |
ef83a571 IM |
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)); | |
67e12eac | 202 | spread = max_vruntime - MIN_vruntime; |
ef83a571 IM |
203 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread", |
204 | SPLIT_NS(spread)); | |
86d9560c | 205 | spread0 = min_vruntime - rq0_min_vruntime; |
ef83a571 IM |
206 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread0", |
207 | SPLIT_NS(spread0)); | |
5ac5c4d6 | 208 | SEQ_printf(m, " .%-30s: %d\n", "nr_spread_over", |
ddc97297 | 209 | cfs_rq->nr_spread_over); |
c82513e5 | 210 | SEQ_printf(m, " .%-30s: %d\n", "nr_running", cfs_rq->nr_running); |
2069dd75 | 211 | SEQ_printf(m, " .%-30s: %ld\n", "load", cfs_rq->load.weight); |
c09595f6 PZ |
212 | #ifdef CONFIG_FAIR_GROUP_SCHED |
213 | #ifdef CONFIG_SMP | |
72a4cf20 | 214 | SEQ_printf(m, " .%-30s: %ld\n", "runnable_load_avg", |
2dac754e | 215 | cfs_rq->runnable_load_avg); |
72a4cf20 | 216 | SEQ_printf(m, " .%-30s: %ld\n", "blocked_load_avg", |
9ee474f5 | 217 | cfs_rq->blocked_load_avg); |
bf5b986e AS |
218 | SEQ_printf(m, " .%-30s: %ld\n", "tg_load_avg", |
219 | atomic_long_read(&cfs_rq->tg->load_avg)); | |
220 | SEQ_printf(m, " .%-30s: %ld\n", "tg_load_contrib", | |
c566e8e9 | 221 | cfs_rq->tg_load_contrib); |
bb17f655 PT |
222 | SEQ_printf(m, " .%-30s: %d\n", "tg_runnable_contrib", |
223 | cfs_rq->tg_runnable_contrib); | |
224 | SEQ_printf(m, " .%-30s: %d\n", "tg->runnable_avg", | |
225 | atomic_read(&cfs_rq->tg->runnable_avg)); | |
c09595f6 | 226 | #endif |
2069dd75 | 227 | |
ff9b48c3 | 228 | print_cfs_group_stats(m, cpu, cfs_rq->tg); |
c09595f6 | 229 | #endif |
43ae34cb IM |
230 | } |
231 | ||
ada18de2 PZ |
232 | void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq) |
233 | { | |
efe25c2c BR |
234 | #ifdef CONFIG_RT_GROUP_SCHED |
235 | SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, task_group_path(rt_rq->tg)); | |
236 | #else | |
ada18de2 | 237 | SEQ_printf(m, "\nrt_rq[%d]:\n", cpu); |
efe25c2c | 238 | #endif |
ada18de2 PZ |
239 | |
240 | #define P(x) \ | |
241 | SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rt_rq->x)) | |
242 | #define PN(x) \ | |
243 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x)) | |
244 | ||
245 | P(rt_nr_running); | |
246 | P(rt_throttled); | |
247 | PN(rt_time); | |
248 | PN(rt_runtime); | |
249 | ||
250 | #undef PN | |
251 | #undef P | |
252 | } | |
253 | ||
5bb6b1ea PZ |
254 | extern __read_mostly int sched_clock_running; |
255 | ||
a48da48b | 256 | static void print_cpu(struct seq_file *m, int cpu) |
43ae34cb | 257 | { |
348ec61e | 258 | struct rq *rq = cpu_rq(cpu); |
efe25c2c | 259 | unsigned long flags; |
43ae34cb IM |
260 | |
261 | #ifdef CONFIG_X86 | |
262 | { | |
263 | unsigned int freq = cpu_khz ? : 1; | |
264 | ||
bbbfeac9 | 265 | SEQ_printf(m, "cpu#%d, %u.%03u MHz\n", |
43ae34cb IM |
266 | cpu, freq / 1000, (freq % 1000)); |
267 | } | |
268 | #else | |
bbbfeac9 | 269 | SEQ_printf(m, "cpu#%d\n", cpu); |
43ae34cb IM |
270 | #endif |
271 | ||
13e099d2 PZ |
272 | #define P(x) \ |
273 | do { \ | |
274 | if (sizeof(rq->x) == 4) \ | |
275 | SEQ_printf(m, " .%-30s: %ld\n", #x, (long)(rq->x)); \ | |
276 | else \ | |
277 | SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rq->x));\ | |
278 | } while (0) | |
279 | ||
ef83a571 IM |
280 | #define PN(x) \ |
281 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x)) | |
43ae34cb IM |
282 | |
283 | P(nr_running); | |
284 | SEQ_printf(m, " .%-30s: %lu\n", "load", | |
495eca49 | 285 | rq->load.weight); |
43ae34cb IM |
286 | P(nr_switches); |
287 | P(nr_load_updates); | |
288 | P(nr_uninterruptible); | |
ef83a571 | 289 | PN(next_balance); |
43ae34cb | 290 | P(curr->pid); |
ef83a571 | 291 | PN(clock); |
43ae34cb IM |
292 | P(cpu_load[0]); |
293 | P(cpu_load[1]); | |
294 | P(cpu_load[2]); | |
295 | P(cpu_load[3]); | |
296 | P(cpu_load[4]); | |
297 | #undef P | |
ef83a571 | 298 | #undef PN |
43ae34cb | 299 | |
5ac5c4d6 PZ |
300 | #ifdef CONFIG_SCHEDSTATS |
301 | #define P(n) SEQ_printf(m, " .%-30s: %d\n", #n, rq->n); | |
1b9508f6 | 302 | #define P64(n) SEQ_printf(m, " .%-30s: %Ld\n", #n, rq->n); |
5ac5c4d6 | 303 | |
5ac5c4d6 PZ |
304 | P(yld_count); |
305 | ||
5ac5c4d6 PZ |
306 | P(sched_count); |
307 | P(sched_goidle); | |
1b9508f6 MG |
308 | #ifdef CONFIG_SMP |
309 | P64(avg_idle); | |
310 | #endif | |
5ac5c4d6 PZ |
311 | |
312 | P(ttwu_count); | |
313 | P(ttwu_local); | |
314 | ||
5ac5c4d6 | 315 | #undef P |
fce20979 | 316 | #undef P64 |
5ac5c4d6 | 317 | #endif |
efe25c2c | 318 | spin_lock_irqsave(&sched_debug_lock, flags); |
5cef9eca | 319 | print_cfs_stats(m, cpu); |
ada18de2 | 320 | print_rt_stats(m, cpu); |
43ae34cb | 321 | |
efe25c2c | 322 | rcu_read_lock(); |
a48da48b | 323 | print_rq(m, rq, cpu); |
efe25c2c BR |
324 | rcu_read_unlock(); |
325 | spin_unlock_irqrestore(&sched_debug_lock, flags); | |
bbbfeac9 | 326 | SEQ_printf(m, "\n"); |
43ae34cb IM |
327 | } |
328 | ||
1983a922 CE |
329 | static const char *sched_tunable_scaling_names[] = { |
330 | "none", | |
331 | "logaritmic", | |
332 | "linear" | |
333 | }; | |
334 | ||
bbbfeac9 | 335 | static void sched_debug_header(struct seq_file *m) |
43ae34cb | 336 | { |
5bb6b1ea PZ |
337 | u64 ktime, sched_clk, cpu_clk; |
338 | unsigned long flags; | |
43ae34cb | 339 | |
5bb6b1ea PZ |
340 | local_irq_save(flags); |
341 | ktime = ktime_to_ns(ktime_get()); | |
342 | sched_clk = sched_clock(); | |
343 | cpu_clk = local_clock(); | |
344 | local_irq_restore(flags); | |
345 | ||
346 | SEQ_printf(m, "Sched Debug Version: v0.10, %s %.*s\n", | |
43ae34cb IM |
347 | init_utsname()->release, |
348 | (int)strcspn(init_utsname()->version, " "), | |
349 | init_utsname()->version); | |
350 | ||
5bb6b1ea PZ |
351 | #define P(x) \ |
352 | SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x)) | |
353 | #define PN(x) \ | |
354 | SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x)) | |
355 | PN(ktime); | |
356 | PN(sched_clk); | |
357 | PN(cpu_clk); | |
358 | P(jiffies); | |
359 | #ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK | |
360 | P(sched_clock_stable); | |
361 | #endif | |
362 | #undef PN | |
363 | #undef P | |
364 | ||
365 | SEQ_printf(m, "\n"); | |
366 | SEQ_printf(m, "sysctl_sched\n"); | |
43ae34cb | 367 | |
1aa4731e | 368 | #define P(x) \ |
d822cece | 369 | SEQ_printf(m, " .%-40s: %Ld\n", #x, (long long)(x)) |
1aa4731e | 370 | #define PN(x) \ |
d822cece | 371 | SEQ_printf(m, " .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x)) |
1aa4731e | 372 | PN(sysctl_sched_latency); |
b2be5e96 | 373 | PN(sysctl_sched_min_granularity); |
1aa4731e | 374 | PN(sysctl_sched_wakeup_granularity); |
eebef746 | 375 | P(sysctl_sched_child_runs_first); |
1aa4731e IM |
376 | P(sysctl_sched_features); |
377 | #undef PN | |
378 | #undef P | |
379 | ||
bbbfeac9 NZ |
380 | SEQ_printf(m, " .%-40s: %d (%s)\n", |
381 | "sysctl_sched_tunable_scaling", | |
1983a922 CE |
382 | sysctl_sched_tunable_scaling, |
383 | sched_tunable_scaling_names[sysctl_sched_tunable_scaling]); | |
bbbfeac9 NZ |
384 | SEQ_printf(m, "\n"); |
385 | } | |
1983a922 | 386 | |
bbbfeac9 NZ |
387 | static int sched_debug_show(struct seq_file *m, void *v) |
388 | { | |
389 | int cpu = (unsigned long)(v - 2); | |
43ae34cb | 390 | |
bbbfeac9 NZ |
391 | if (cpu != -1) |
392 | print_cpu(m, cpu); | |
393 | else | |
394 | sched_debug_header(m); | |
43ae34cb IM |
395 | |
396 | return 0; | |
397 | } | |
398 | ||
029632fb | 399 | void sysrq_sched_debug_show(void) |
43ae34cb | 400 | { |
bbbfeac9 NZ |
401 | int cpu; |
402 | ||
403 | sched_debug_header(NULL); | |
404 | for_each_online_cpu(cpu) | |
405 | print_cpu(NULL, cpu); | |
406 | ||
407 | } | |
408 | ||
409 | /* | |
410 | * This itererator needs some explanation. | |
411 | * It returns 1 for the header position. | |
412 | * This means 2 is cpu 0. | |
413 | * In a hotplugged system some cpus, including cpu 0, may be missing so we have | |
414 | * to use cpumask_* to iterate over the cpus. | |
415 | */ | |
416 | static void *sched_debug_start(struct seq_file *file, loff_t *offset) | |
417 | { | |
418 | unsigned long n = *offset; | |
419 | ||
420 | if (n == 0) | |
421 | return (void *) 1; | |
422 | ||
423 | n--; | |
424 | ||
425 | if (n > 0) | |
426 | n = cpumask_next(n - 1, cpu_online_mask); | |
427 | else | |
428 | n = cpumask_first(cpu_online_mask); | |
429 | ||
430 | *offset = n + 1; | |
431 | ||
432 | if (n < nr_cpu_ids) | |
433 | return (void *)(unsigned long)(n + 2); | |
434 | return NULL; | |
435 | } | |
436 | ||
437 | static void *sched_debug_next(struct seq_file *file, void *data, loff_t *offset) | |
438 | { | |
439 | (*offset)++; | |
440 | return sched_debug_start(file, offset); | |
441 | } | |
442 | ||
443 | static void sched_debug_stop(struct seq_file *file, void *data) | |
444 | { | |
445 | } | |
446 | ||
447 | static const struct seq_operations sched_debug_sops = { | |
448 | .start = sched_debug_start, | |
449 | .next = sched_debug_next, | |
450 | .stop = sched_debug_stop, | |
451 | .show = sched_debug_show, | |
452 | }; | |
453 | ||
454 | static int sched_debug_release(struct inode *inode, struct file *file) | |
455 | { | |
456 | seq_release(inode, file); | |
457 | ||
458 | return 0; | |
43ae34cb IM |
459 | } |
460 | ||
461 | static int sched_debug_open(struct inode *inode, struct file *filp) | |
462 | { | |
bbbfeac9 NZ |
463 | int ret = 0; |
464 | ||
465 | ret = seq_open(filp, &sched_debug_sops); | |
466 | ||
467 | return ret; | |
43ae34cb IM |
468 | } |
469 | ||
0dbee3a6 | 470 | static const struct file_operations sched_debug_fops = { |
43ae34cb IM |
471 | .open = sched_debug_open, |
472 | .read = seq_read, | |
473 | .llseek = seq_lseek, | |
bbbfeac9 | 474 | .release = sched_debug_release, |
43ae34cb IM |
475 | }; |
476 | ||
477 | static int __init init_sched_debug_procfs(void) | |
478 | { | |
479 | struct proc_dir_entry *pe; | |
480 | ||
a9cf4ddb | 481 | pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops); |
43ae34cb IM |
482 | if (!pe) |
483 | return -ENOMEM; | |
43ae34cb IM |
484 | return 0; |
485 | } | |
486 | ||
487 | __initcall(init_sched_debug_procfs); | |
488 | ||
489 | void proc_sched_show_task(struct task_struct *p, struct seq_file *m) | |
490 | { | |
cc367732 | 491 | unsigned long nr_switches; |
43ae34cb | 492 | |
5089a976 ON |
493 | SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid, |
494 | get_nr_threads(p)); | |
2d92f227 | 495 | SEQ_printf(m, |
add332a1 KB |
496 | "---------------------------------------------------------" |
497 | "----------\n"); | |
cc367732 | 498 | #define __P(F) \ |
add332a1 | 499 | SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)F) |
43ae34cb | 500 | #define P(F) \ |
add332a1 | 501 | SEQ_printf(m, "%-45s:%21Ld\n", #F, (long long)p->F) |
cc367732 | 502 | #define __PN(F) \ |
add332a1 | 503 | SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F)) |
ef83a571 | 504 | #define PN(F) \ |
add332a1 | 505 | SEQ_printf(m, "%-45s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F)) |
43ae34cb | 506 | |
ef83a571 IM |
507 | PN(se.exec_start); |
508 | PN(se.vruntime); | |
509 | PN(se.sum_exec_runtime); | |
6cfb0d5d | 510 | |
cc367732 IM |
511 | nr_switches = p->nvcsw + p->nivcsw; |
512 | ||
6cfb0d5d | 513 | #ifdef CONFIG_SCHEDSTATS |
41acab88 LDM |
514 | PN(se.statistics.wait_start); |
515 | PN(se.statistics.sleep_start); | |
516 | PN(se.statistics.block_start); | |
517 | PN(se.statistics.sleep_max); | |
518 | PN(se.statistics.block_max); | |
519 | PN(se.statistics.exec_max); | |
520 | PN(se.statistics.slice_max); | |
521 | PN(se.statistics.wait_max); | |
522 | PN(se.statistics.wait_sum); | |
523 | P(se.statistics.wait_count); | |
524 | PN(se.statistics.iowait_sum); | |
525 | P(se.statistics.iowait_count); | |
cc367732 | 526 | P(se.nr_migrations); |
41acab88 LDM |
527 | P(se.statistics.nr_migrations_cold); |
528 | P(se.statistics.nr_failed_migrations_affine); | |
529 | P(se.statistics.nr_failed_migrations_running); | |
530 | P(se.statistics.nr_failed_migrations_hot); | |
531 | P(se.statistics.nr_forced_migrations); | |
532 | P(se.statistics.nr_wakeups); | |
533 | P(se.statistics.nr_wakeups_sync); | |
534 | P(se.statistics.nr_wakeups_migrate); | |
535 | P(se.statistics.nr_wakeups_local); | |
536 | P(se.statistics.nr_wakeups_remote); | |
537 | P(se.statistics.nr_wakeups_affine); | |
538 | P(se.statistics.nr_wakeups_affine_attempts); | |
539 | P(se.statistics.nr_wakeups_passive); | |
540 | P(se.statistics.nr_wakeups_idle); | |
cc367732 IM |
541 | |
542 | { | |
543 | u64 avg_atom, avg_per_cpu; | |
544 | ||
545 | avg_atom = p->se.sum_exec_runtime; | |
546 | if (nr_switches) | |
547 | do_div(avg_atom, nr_switches); | |
548 | else | |
549 | avg_atom = -1LL; | |
550 | ||
551 | avg_per_cpu = p->se.sum_exec_runtime; | |
c1a89740 | 552 | if (p->se.nr_migrations) { |
6f6d6a1a RZ |
553 | avg_per_cpu = div64_u64(avg_per_cpu, |
554 | p->se.nr_migrations); | |
c1a89740 | 555 | } else { |
cc367732 | 556 | avg_per_cpu = -1LL; |
c1a89740 | 557 | } |
cc367732 IM |
558 | |
559 | __PN(avg_atom); | |
560 | __PN(avg_per_cpu); | |
561 | } | |
6cfb0d5d | 562 | #endif |
cc367732 | 563 | __P(nr_switches); |
add332a1 | 564 | SEQ_printf(m, "%-45s:%21Ld\n", |
cc367732 | 565 | "nr_voluntary_switches", (long long)p->nvcsw); |
add332a1 | 566 | SEQ_printf(m, "%-45s:%21Ld\n", |
cc367732 IM |
567 | "nr_involuntary_switches", (long long)p->nivcsw); |
568 | ||
43ae34cb | 569 | P(se.load.weight); |
939fd731 KB |
570 | #if defined(CONFIG_SMP) && defined(CONFIG_FAIR_GROUP_SCHED) |
571 | P(se.avg.runnable_avg_sum); | |
572 | P(se.avg.runnable_avg_period); | |
573 | P(se.avg.load_avg_contrib); | |
574 | P(se.avg.decay_count); | |
575 | #endif | |
43ae34cb IM |
576 | P(policy); |
577 | P(prio); | |
ef83a571 | 578 | #undef PN |
cc367732 IM |
579 | #undef __PN |
580 | #undef P | |
581 | #undef __P | |
43ae34cb IM |
582 | |
583 | { | |
29d7b90c | 584 | unsigned int this_cpu = raw_smp_processor_id(); |
43ae34cb IM |
585 | u64 t0, t1; |
586 | ||
29d7b90c IM |
587 | t0 = cpu_clock(this_cpu); |
588 | t1 = cpu_clock(this_cpu); | |
add332a1 | 589 | SEQ_printf(m, "%-45s:%21Ld\n", |
43ae34cb IM |
590 | "clock-delta", (long long)(t1-t0)); |
591 | } | |
592 | } | |
593 | ||
594 | void proc_sched_set_task(struct task_struct *p) | |
595 | { | |
6cfb0d5d | 596 | #ifdef CONFIG_SCHEDSTATS |
41acab88 | 597 | memset(&p->se.statistics, 0, sizeof(p->se.statistics)); |
6cfb0d5d | 598 | #endif |
43ae34cb | 599 | } |