Commit | Line | Data |
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43ae34cb IM |
1 | /* |
2 | * kernel/time/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 | ||
19 | /* | |
20 | * This allows printing both to /proc/sched_debug and | |
21 | * to the console | |
22 | */ | |
23 | #define SEQ_printf(m, x...) \ | |
24 | do { \ | |
25 | if (m) \ | |
26 | seq_printf(m, x); \ | |
27 | else \ | |
28 | printk(x); \ | |
29 | } while (0) | |
30 | ||
ef83a571 IM |
31 | /* |
32 | * Ease the printing of nsec fields: | |
33 | */ | |
90b2628f | 34 | static long long nsec_high(unsigned long long nsec) |
ef83a571 | 35 | { |
90b2628f | 36 | if ((long long)nsec < 0) { |
ef83a571 IM |
37 | nsec = -nsec; |
38 | do_div(nsec, 1000000); | |
39 | return -nsec; | |
40 | } | |
41 | do_div(nsec, 1000000); | |
42 | ||
43 | return nsec; | |
44 | } | |
45 | ||
90b2628f | 46 | static unsigned long nsec_low(unsigned long long nsec) |
ef83a571 | 47 | { |
90b2628f | 48 | if ((long long)nsec < 0) |
ef83a571 IM |
49 | nsec = -nsec; |
50 | ||
51 | return do_div(nsec, 1000000); | |
52 | } | |
53 | ||
54 | #define SPLIT_NS(x) nsec_high(x), nsec_low(x) | |
55 | ||
ff9b48c3 BR |
56 | #ifdef CONFIG_FAIR_GROUP_SCHED |
57 | static void print_cfs_group_stats(struct seq_file *m, int cpu, | |
58 | struct task_group *tg) | |
59 | { | |
60 | struct sched_entity *se = tg->se[cpu]; | |
61 | if (!se) | |
62 | return; | |
63 | ||
64 | #define P(F) \ | |
65 | SEQ_printf(m, " .%-30s: %lld\n", #F, (long long)F) | |
66 | #define PN(F) \ | |
67 | SEQ_printf(m, " .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)F)) | |
68 | ||
69 | PN(se->exec_start); | |
70 | PN(se->vruntime); | |
71 | PN(se->sum_exec_runtime); | |
72 | #ifdef CONFIG_SCHEDSTATS | |
41acab88 LDM |
73 | PN(se->statistics.wait_start); |
74 | PN(se->statistics.sleep_start); | |
75 | PN(se->statistics.block_start); | |
76 | PN(se->statistics.sleep_max); | |
77 | PN(se->statistics.block_max); | |
78 | PN(se->statistics.exec_max); | |
79 | PN(se->statistics.slice_max); | |
80 | PN(se->statistics.wait_max); | |
81 | PN(se->statistics.wait_sum); | |
82 | P(se->statistics.wait_count); | |
ff9b48c3 BR |
83 | #endif |
84 | P(se->load.weight); | |
85 | #undef PN | |
86 | #undef P | |
87 | } | |
88 | #endif | |
89 | ||
43ae34cb | 90 | static void |
a48da48b | 91 | print_task(struct seq_file *m, struct rq *rq, struct task_struct *p) |
43ae34cb IM |
92 | { |
93 | if (rq->curr == p) | |
94 | SEQ_printf(m, "R"); | |
95 | else | |
96 | SEQ_printf(m, " "); | |
97 | ||
ef83a571 | 98 | SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ", |
43ae34cb | 99 | p->comm, p->pid, |
ef83a571 | 100 | SPLIT_NS(p->se.vruntime), |
43ae34cb | 101 | (long long)(p->nvcsw + p->nivcsw), |
6f605d83 | 102 | p->prio); |
6cfb0d5d | 103 | #ifdef CONFIG_SCHEDSTATS |
d19ca308 | 104 | SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld", |
ef83a571 IM |
105 | SPLIT_NS(p->se.vruntime), |
106 | SPLIT_NS(p->se.sum_exec_runtime), | |
41acab88 | 107 | SPLIT_NS(p->se.statistics.sum_sleep_runtime)); |
6cfb0d5d | 108 | #else |
d19ca308 | 109 | SEQ_printf(m, "%15Ld %15Ld %15Ld.%06ld %15Ld.%06ld %15Ld.%06ld", |
ef83a571 | 110 | 0LL, 0LL, 0LL, 0L, 0LL, 0L, 0LL, 0L); |
6cfb0d5d | 111 | #endif |
d19ca308 PZ |
112 | |
113 | #ifdef CONFIG_CGROUP_SCHED | |
114 | { | |
115 | char path[64]; | |
116 | ||
b629317e | 117 | rcu_read_lock(); |
d19ca308 | 118 | cgroup_path(task_group(p)->css.cgroup, path, sizeof(path)); |
b629317e | 119 | rcu_read_unlock(); |
d19ca308 PZ |
120 | SEQ_printf(m, " %s", path); |
121 | } | |
122 | #endif | |
123 | SEQ_printf(m, "\n"); | |
43ae34cb IM |
124 | } |
125 | ||
a48da48b | 126 | static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu) |
43ae34cb IM |
127 | { |
128 | struct task_struct *g, *p; | |
ab63a633 | 129 | unsigned long flags; |
43ae34cb IM |
130 | |
131 | SEQ_printf(m, | |
132 | "\nrunnable tasks:\n" | |
c86da3a3 MG |
133 | " task PID tree-key switches prio" |
134 | " exec-runtime sum-exec sum-sleep\n" | |
1a75b94f | 135 | "------------------------------------------------------" |
c86da3a3 | 136 | "----------------------------------------------------\n"); |
43ae34cb | 137 | |
ab63a633 | 138 | read_lock_irqsave(&tasklist_lock, flags); |
43ae34cb IM |
139 | |
140 | do_each_thread(g, p) { | |
141 | if (!p->se.on_rq || task_cpu(p) != rq_cpu) | |
142 | continue; | |
143 | ||
a48da48b | 144 | print_task(m, rq, p); |
43ae34cb IM |
145 | } while_each_thread(g, p); |
146 | ||
ab63a633 | 147 | read_unlock_irqrestore(&tasklist_lock, flags); |
43ae34cb IM |
148 | } |
149 | ||
805194c3 LZ |
150 | #if defined(CONFIG_CGROUP_SCHED) && \ |
151 | (defined(CONFIG_FAIR_GROUP_SCHED) || defined(CONFIG_RT_GROUP_SCHED)) | |
152 | static void task_group_path(struct task_group *tg, char *buf, int buflen) | |
153 | { | |
154 | /* may be NULL if the underlying cgroup isn't fully-created yet */ | |
155 | if (!tg->css.cgroup) { | |
156 | buf[0] = '\0'; | |
157 | return; | |
158 | } | |
159 | cgroup_path(tg->css.cgroup, buf, buflen); | |
160 | } | |
161 | #endif | |
162 | ||
5cef9eca | 163 | void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq) |
43ae34cb | 164 | { |
86d9560c IM |
165 | s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1, |
166 | spread, rq0_min_vruntime, spread0; | |
348ec61e | 167 | struct rq *rq = cpu_rq(cpu); |
67e12eac IM |
168 | struct sched_entity *last; |
169 | unsigned long flags; | |
170 | ||
ada18de2 | 171 | #if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED) |
805194c3 | 172 | char path[128]; |
d19ca308 PZ |
173 | struct task_group *tg = cfs_rq->tg; |
174 | ||
805194c3 | 175 | task_group_path(tg, path, sizeof(path)); |
d19ca308 PZ |
176 | |
177 | SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, path); | |
ada18de2 PZ |
178 | #else |
179 | SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu); | |
d19ca308 | 180 | #endif |
ef83a571 IM |
181 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock", |
182 | SPLIT_NS(cfs_rq->exec_clock)); | |
67e12eac | 183 | |
05fa785c | 184 | raw_spin_lock_irqsave(&rq->lock, flags); |
67e12eac IM |
185 | if (cfs_rq->rb_leftmost) |
186 | MIN_vruntime = (__pick_next_entity(cfs_rq))->vruntime; | |
187 | last = __pick_last_entity(cfs_rq); | |
188 | if (last) | |
189 | max_vruntime = last->vruntime; | |
5ac5c4d6 | 190 | min_vruntime = cfs_rq->min_vruntime; |
348ec61e | 191 | rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime; |
05fa785c | 192 | raw_spin_unlock_irqrestore(&rq->lock, flags); |
ef83a571 IM |
193 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "MIN_vruntime", |
194 | SPLIT_NS(MIN_vruntime)); | |
195 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "min_vruntime", | |
196 | SPLIT_NS(min_vruntime)); | |
197 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "max_vruntime", | |
198 | SPLIT_NS(max_vruntime)); | |
67e12eac | 199 | spread = max_vruntime - MIN_vruntime; |
ef83a571 IM |
200 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread", |
201 | SPLIT_NS(spread)); | |
86d9560c | 202 | spread0 = min_vruntime - rq0_min_vruntime; |
ef83a571 IM |
203 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread0", |
204 | SPLIT_NS(spread0)); | |
5ac5c4d6 | 205 | SEQ_printf(m, " .%-30s: %d\n", "nr_spread_over", |
ddc97297 | 206 | cfs_rq->nr_spread_over); |
2069dd75 PZ |
207 | SEQ_printf(m, " .%-30s: %ld\n", "nr_running", cfs_rq->nr_running); |
208 | SEQ_printf(m, " .%-30s: %ld\n", "load", cfs_rq->load.weight); | |
c09595f6 PZ |
209 | #ifdef CONFIG_FAIR_GROUP_SCHED |
210 | #ifdef CONFIG_SMP | |
2069dd75 PZ |
211 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "load_avg", |
212 | SPLIT_NS(cfs_rq->load_avg)); | |
213 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "load_period", | |
214 | SPLIT_NS(cfs_rq->load_period)); | |
215 | SEQ_printf(m, " .%-30s: %ld\n", "load_contrib", | |
216 | cfs_rq->load_contribution); | |
217 | SEQ_printf(m, " .%-30s: %d\n", "load_tg", | |
218 | atomic_read(&tg->load_weight)); | |
c09595f6 | 219 | #endif |
2069dd75 | 220 | |
ff9b48c3 | 221 | print_cfs_group_stats(m, cpu, cfs_rq->tg); |
c09595f6 | 222 | #endif |
43ae34cb IM |
223 | } |
224 | ||
ada18de2 PZ |
225 | void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq) |
226 | { | |
227 | #if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_RT_GROUP_SCHED) | |
805194c3 | 228 | char path[128]; |
ada18de2 PZ |
229 | struct task_group *tg = rt_rq->tg; |
230 | ||
805194c3 | 231 | task_group_path(tg, path, sizeof(path)); |
ada18de2 PZ |
232 | |
233 | SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, path); | |
234 | #else | |
235 | SEQ_printf(m, "\nrt_rq[%d]:\n", cpu); | |
236 | #endif | |
237 | ||
238 | ||
239 | #define P(x) \ | |
240 | SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rt_rq->x)) | |
241 | #define PN(x) \ | |
242 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x)) | |
243 | ||
244 | P(rt_nr_running); | |
245 | P(rt_throttled); | |
246 | PN(rt_time); | |
247 | PN(rt_runtime); | |
248 | ||
249 | #undef PN | |
250 | #undef P | |
251 | } | |
252 | ||
a48da48b | 253 | static void print_cpu(struct seq_file *m, int cpu) |
43ae34cb | 254 | { |
348ec61e | 255 | struct rq *rq = cpu_rq(cpu); |
43ae34cb IM |
256 | |
257 | #ifdef CONFIG_X86 | |
258 | { | |
259 | unsigned int freq = cpu_khz ? : 1; | |
260 | ||
261 | SEQ_printf(m, "\ncpu#%d, %u.%03u MHz\n", | |
262 | cpu, freq / 1000, (freq % 1000)); | |
263 | } | |
264 | #else | |
265 | SEQ_printf(m, "\ncpu#%d\n", cpu); | |
266 | #endif | |
267 | ||
268 | #define P(x) \ | |
269 | SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rq->x)) | |
ef83a571 IM |
270 | #define PN(x) \ |
271 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x)) | |
43ae34cb IM |
272 | |
273 | P(nr_running); | |
274 | SEQ_printf(m, " .%-30s: %lu\n", "load", | |
495eca49 | 275 | rq->load.weight); |
43ae34cb IM |
276 | P(nr_switches); |
277 | P(nr_load_updates); | |
278 | P(nr_uninterruptible); | |
ef83a571 | 279 | PN(next_balance); |
43ae34cb | 280 | P(curr->pid); |
ef83a571 | 281 | PN(clock); |
43ae34cb IM |
282 | P(cpu_load[0]); |
283 | P(cpu_load[1]); | |
284 | P(cpu_load[2]); | |
285 | P(cpu_load[3]); | |
286 | P(cpu_load[4]); | |
287 | #undef P | |
ef83a571 | 288 | #undef PN |
43ae34cb | 289 | |
5ac5c4d6 PZ |
290 | #ifdef CONFIG_SCHEDSTATS |
291 | #define P(n) SEQ_printf(m, " .%-30s: %d\n", #n, rq->n); | |
1b9508f6 | 292 | #define P64(n) SEQ_printf(m, " .%-30s: %Ld\n", #n, rq->n); |
5ac5c4d6 | 293 | |
5ac5c4d6 PZ |
294 | P(yld_count); |
295 | ||
296 | P(sched_switch); | |
297 | P(sched_count); | |
298 | P(sched_goidle); | |
1b9508f6 MG |
299 | #ifdef CONFIG_SMP |
300 | P64(avg_idle); | |
301 | #endif | |
5ac5c4d6 PZ |
302 | |
303 | P(ttwu_count); | |
304 | P(ttwu_local); | |
305 | ||
306 | P(bkl_count); | |
307 | ||
308 | #undef P | |
309 | #endif | |
5cef9eca | 310 | print_cfs_stats(m, cpu); |
ada18de2 | 311 | print_rt_stats(m, cpu); |
43ae34cb | 312 | |
a48da48b | 313 | print_rq(m, rq, cpu); |
43ae34cb IM |
314 | } |
315 | ||
1983a922 CE |
316 | static const char *sched_tunable_scaling_names[] = { |
317 | "none", | |
318 | "logaritmic", | |
319 | "linear" | |
320 | }; | |
321 | ||
43ae34cb IM |
322 | static int sched_debug_show(struct seq_file *m, void *v) |
323 | { | |
324 | u64 now = ktime_to_ns(ktime_get()); | |
325 | int cpu; | |
326 | ||
67aa0f76 | 327 | SEQ_printf(m, "Sched Debug Version: v0.09, %s %.*s\n", |
43ae34cb IM |
328 | init_utsname()->release, |
329 | (int)strcspn(init_utsname()->version, " "), | |
330 | init_utsname()->version); | |
331 | ||
ef83a571 | 332 | SEQ_printf(m, "now at %Lu.%06ld msecs\n", SPLIT_NS(now)); |
43ae34cb | 333 | |
1aa4731e | 334 | #define P(x) \ |
d822cece | 335 | SEQ_printf(m, " .%-40s: %Ld\n", #x, (long long)(x)) |
1aa4731e | 336 | #define PN(x) \ |
d822cece | 337 | SEQ_printf(m, " .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x)) |
af66df5e | 338 | P(jiffies); |
1aa4731e | 339 | PN(sysctl_sched_latency); |
b2be5e96 | 340 | PN(sysctl_sched_min_granularity); |
1aa4731e | 341 | PN(sysctl_sched_wakeup_granularity); |
eebef746 | 342 | P(sysctl_sched_child_runs_first); |
1aa4731e IM |
343 | P(sysctl_sched_features); |
344 | #undef PN | |
345 | #undef P | |
346 | ||
1983a922 CE |
347 | SEQ_printf(m, " .%-40s: %d (%s)\n", "sysctl_sched_tunable_scaling", |
348 | sysctl_sched_tunable_scaling, | |
349 | sched_tunable_scaling_names[sysctl_sched_tunable_scaling]); | |
350 | ||
43ae34cb | 351 | for_each_online_cpu(cpu) |
a48da48b | 352 | print_cpu(m, cpu); |
43ae34cb IM |
353 | |
354 | SEQ_printf(m, "\n"); | |
355 | ||
356 | return 0; | |
357 | } | |
358 | ||
f3373461 | 359 | static void sysrq_sched_debug_show(void) |
43ae34cb IM |
360 | { |
361 | sched_debug_show(NULL, NULL); | |
362 | } | |
363 | ||
364 | static int sched_debug_open(struct inode *inode, struct file *filp) | |
365 | { | |
366 | return single_open(filp, sched_debug_show, NULL); | |
367 | } | |
368 | ||
0dbee3a6 | 369 | static const struct file_operations sched_debug_fops = { |
43ae34cb IM |
370 | .open = sched_debug_open, |
371 | .read = seq_read, | |
372 | .llseek = seq_lseek, | |
5ea473a1 | 373 | .release = single_release, |
43ae34cb IM |
374 | }; |
375 | ||
376 | static int __init init_sched_debug_procfs(void) | |
377 | { | |
378 | struct proc_dir_entry *pe; | |
379 | ||
a9cf4ddb | 380 | pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops); |
43ae34cb IM |
381 | if (!pe) |
382 | return -ENOMEM; | |
43ae34cb IM |
383 | return 0; |
384 | } | |
385 | ||
386 | __initcall(init_sched_debug_procfs); | |
387 | ||
388 | void proc_sched_show_task(struct task_struct *p, struct seq_file *m) | |
389 | { | |
cc367732 | 390 | unsigned long nr_switches; |
43ae34cb | 391 | |
5089a976 ON |
392 | SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid, |
393 | get_nr_threads(p)); | |
2d92f227 IM |
394 | SEQ_printf(m, |
395 | "---------------------------------------------------------\n"); | |
cc367732 IM |
396 | #define __P(F) \ |
397 | SEQ_printf(m, "%-35s:%21Ld\n", #F, (long long)F) | |
43ae34cb | 398 | #define P(F) \ |
2d92f227 | 399 | SEQ_printf(m, "%-35s:%21Ld\n", #F, (long long)p->F) |
cc367732 IM |
400 | #define __PN(F) \ |
401 | SEQ_printf(m, "%-35s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F)) | |
ef83a571 | 402 | #define PN(F) \ |
2d92f227 | 403 | SEQ_printf(m, "%-35s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F)) |
43ae34cb | 404 | |
ef83a571 IM |
405 | PN(se.exec_start); |
406 | PN(se.vruntime); | |
407 | PN(se.sum_exec_runtime); | |
6cfb0d5d | 408 | |
cc367732 IM |
409 | nr_switches = p->nvcsw + p->nivcsw; |
410 | ||
6cfb0d5d | 411 | #ifdef CONFIG_SCHEDSTATS |
41acab88 LDM |
412 | PN(se.statistics.wait_start); |
413 | PN(se.statistics.sleep_start); | |
414 | PN(se.statistics.block_start); | |
415 | PN(se.statistics.sleep_max); | |
416 | PN(se.statistics.block_max); | |
417 | PN(se.statistics.exec_max); | |
418 | PN(se.statistics.slice_max); | |
419 | PN(se.statistics.wait_max); | |
420 | PN(se.statistics.wait_sum); | |
421 | P(se.statistics.wait_count); | |
422 | PN(se.statistics.iowait_sum); | |
423 | P(se.statistics.iowait_count); | |
2d72376b | 424 | P(sched_info.bkl_count); |
cc367732 | 425 | P(se.nr_migrations); |
41acab88 LDM |
426 | P(se.statistics.nr_migrations_cold); |
427 | P(se.statistics.nr_failed_migrations_affine); | |
428 | P(se.statistics.nr_failed_migrations_running); | |
429 | P(se.statistics.nr_failed_migrations_hot); | |
430 | P(se.statistics.nr_forced_migrations); | |
431 | P(se.statistics.nr_wakeups); | |
432 | P(se.statistics.nr_wakeups_sync); | |
433 | P(se.statistics.nr_wakeups_migrate); | |
434 | P(se.statistics.nr_wakeups_local); | |
435 | P(se.statistics.nr_wakeups_remote); | |
436 | P(se.statistics.nr_wakeups_affine); | |
437 | P(se.statistics.nr_wakeups_affine_attempts); | |
438 | P(se.statistics.nr_wakeups_passive); | |
439 | P(se.statistics.nr_wakeups_idle); | |
cc367732 IM |
440 | |
441 | { | |
442 | u64 avg_atom, avg_per_cpu; | |
443 | ||
444 | avg_atom = p->se.sum_exec_runtime; | |
445 | if (nr_switches) | |
446 | do_div(avg_atom, nr_switches); | |
447 | else | |
448 | avg_atom = -1LL; | |
449 | ||
450 | avg_per_cpu = p->se.sum_exec_runtime; | |
c1a89740 | 451 | if (p->se.nr_migrations) { |
6f6d6a1a RZ |
452 | avg_per_cpu = div64_u64(avg_per_cpu, |
453 | p->se.nr_migrations); | |
c1a89740 | 454 | } else { |
cc367732 | 455 | avg_per_cpu = -1LL; |
c1a89740 | 456 | } |
cc367732 IM |
457 | |
458 | __PN(avg_atom); | |
459 | __PN(avg_per_cpu); | |
460 | } | |
6cfb0d5d | 461 | #endif |
cc367732 | 462 | __P(nr_switches); |
2d92f227 | 463 | SEQ_printf(m, "%-35s:%21Ld\n", |
cc367732 IM |
464 | "nr_voluntary_switches", (long long)p->nvcsw); |
465 | SEQ_printf(m, "%-35s:%21Ld\n", | |
466 | "nr_involuntary_switches", (long long)p->nivcsw); | |
467 | ||
43ae34cb IM |
468 | P(se.load.weight); |
469 | P(policy); | |
470 | P(prio); | |
ef83a571 | 471 | #undef PN |
cc367732 IM |
472 | #undef __PN |
473 | #undef P | |
474 | #undef __P | |
43ae34cb IM |
475 | |
476 | { | |
29d7b90c | 477 | unsigned int this_cpu = raw_smp_processor_id(); |
43ae34cb IM |
478 | u64 t0, t1; |
479 | ||
29d7b90c IM |
480 | t0 = cpu_clock(this_cpu); |
481 | t1 = cpu_clock(this_cpu); | |
2d92f227 | 482 | SEQ_printf(m, "%-35s:%21Ld\n", |
43ae34cb IM |
483 | "clock-delta", (long long)(t1-t0)); |
484 | } | |
485 | } | |
486 | ||
487 | void proc_sched_set_task(struct task_struct *p) | |
488 | { | |
6cfb0d5d | 489 | #ifdef CONFIG_SCHEDSTATS |
41acab88 | 490 | memset(&p->se.statistics, 0, sizeof(p->se.statistics)); |
6cfb0d5d | 491 | #endif |
43ae34cb | 492 | } |