Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 1 | /* |
Peter Zijlstra | 391e43d | 2011-11-15 17:14:39 +0100 | [diff] [blame] | 2 | * kernel/sched/debug.c |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 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 | |
Peter Zijlstra | 029632f | 2011-10-25 10:00:11 +0200 | [diff] [blame] | 19 | #include "sched.h" |
| 20 | |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 21 | static DEFINE_SPINLOCK(sched_debug_lock); |
| 22 | |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 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 | |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 35 | /* |
| 36 | * Ease the printing of nsec fields: |
| 37 | */ |
Ingo Molnar | 90b2628 | 2007-12-30 17:24:35 +0100 | [diff] [blame] | 38 | static long long nsec_high(unsigned long long nsec) |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 39 | { |
Ingo Molnar | 90b2628 | 2007-12-30 17:24:35 +0100 | [diff] [blame] | 40 | if ((long long)nsec < 0) { |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 41 | nsec = -nsec; |
| 42 | do_div(nsec, 1000000); |
| 43 | return -nsec; |
| 44 | } |
| 45 | do_div(nsec, 1000000); |
| 46 | |
| 47 | return nsec; |
| 48 | } |
| 49 | |
Ingo Molnar | 90b2628 | 2007-12-30 17:24:35 +0100 | [diff] [blame] | 50 | static unsigned long nsec_low(unsigned long long nsec) |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 51 | { |
Ingo Molnar | 90b2628 | 2007-12-30 17:24:35 +0100 | [diff] [blame] | 52 | if ((long long)nsec < 0) |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 53 | nsec = -nsec; |
| 54 | |
| 55 | return do_div(nsec, 1000000); |
| 56 | } |
| 57 | |
| 58 | #define SPLIT_NS(x) nsec_high(x), nsec_low(x) |
| 59 | |
Bharata B Rao | ff9b48c | 2008-11-10 21:34:09 +0530 | [diff] [blame] | 60 | #ifdef CONFIG_FAIR_GROUP_SCHED |
Mike Galbraith | 5091faa | 2010-11-30 14:18:03 +0100 | [diff] [blame] | 61 | static void print_cfs_group_stats(struct seq_file *m, int cpu, struct task_group *tg) |
Bharata B Rao | ff9b48c | 2008-11-10 21:34:09 +0530 | [diff] [blame] | 62 | { |
| 63 | struct sched_entity *se = tg->se[cpu]; |
| 64 | if (!se) |
| 65 | return; |
| 66 | |
| 67 | #define P(F) \ |
| 68 | SEQ_printf(m, " .%-30s: %lld\n", #F, (long long)F) |
| 69 | #define PN(F) \ |
| 70 | SEQ_printf(m, " .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)F)) |
| 71 | |
| 72 | PN(se->exec_start); |
| 73 | PN(se->vruntime); |
| 74 | PN(se->sum_exec_runtime); |
| 75 | #ifdef CONFIG_SCHEDSTATS |
Lucas De Marchi | 41acab8 | 2010-03-10 23:37:45 -0300 | [diff] [blame] | 76 | PN(se->statistics.wait_start); |
| 77 | PN(se->statistics.sleep_start); |
| 78 | PN(se->statistics.block_start); |
| 79 | PN(se->statistics.sleep_max); |
| 80 | PN(se->statistics.block_max); |
| 81 | PN(se->statistics.exec_max); |
| 82 | PN(se->statistics.slice_max); |
| 83 | PN(se->statistics.wait_max); |
| 84 | PN(se->statistics.wait_sum); |
| 85 | P(se->statistics.wait_count); |
Bharata B Rao | ff9b48c | 2008-11-10 21:34:09 +0530 | [diff] [blame] | 86 | #endif |
| 87 | P(se->load.weight); |
| 88 | #undef PN |
| 89 | #undef P |
| 90 | } |
| 91 | #endif |
| 92 | |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 93 | #ifdef CONFIG_CGROUP_SCHED |
| 94 | static char group_path[PATH_MAX]; |
| 95 | |
| 96 | static char *task_group_path(struct task_group *tg) |
| 97 | { |
Bharata B Rao | 8ecedd7 | 2011-01-11 15:42:57 +0530 | [diff] [blame] | 98 | if (autogroup_path(tg, group_path, PATH_MAX)) |
| 99 | return group_path; |
| 100 | |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 101 | /* |
| 102 | * May be NULL if the underlying cgroup isn't fully-created yet |
| 103 | */ |
| 104 | if (!tg->css.cgroup) { |
| 105 | group_path[0] = '\0'; |
| 106 | return group_path; |
| 107 | } |
| 108 | cgroup_path(tg->css.cgroup, group_path, PATH_MAX); |
| 109 | return group_path; |
| 110 | } |
| 111 | #endif |
| 112 | |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 113 | static void |
Ingo Molnar | a48da48 | 2007-08-09 11:16:51 +0200 | [diff] [blame] | 114 | print_task(struct seq_file *m, struct rq *rq, struct task_struct *p) |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 115 | { |
| 116 | if (rq->curr == p) |
| 117 | SEQ_printf(m, "R"); |
| 118 | else |
| 119 | SEQ_printf(m, " "); |
| 120 | |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 121 | SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ", |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 122 | p->comm, p->pid, |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 123 | SPLIT_NS(p->se.vruntime), |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 124 | (long long)(p->nvcsw + p->nivcsw), |
Al Viro | 6f605d8 | 2007-08-06 04:26:59 +0100 | [diff] [blame] | 125 | p->prio); |
Ingo Molnar | 6cfb0d5 | 2007-08-02 17:41:40 +0200 | [diff] [blame] | 126 | #ifdef CONFIG_SCHEDSTATS |
Peter Zijlstra | d19ca30 | 2008-04-19 19:45:00 +0200 | [diff] [blame] | 127 | SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld", |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 128 | SPLIT_NS(p->se.vruntime), |
| 129 | SPLIT_NS(p->se.sum_exec_runtime), |
Lucas De Marchi | 41acab8 | 2010-03-10 23:37:45 -0300 | [diff] [blame] | 130 | SPLIT_NS(p->se.statistics.sum_sleep_runtime)); |
Ingo Molnar | 6cfb0d5 | 2007-08-02 17:41:40 +0200 | [diff] [blame] | 131 | #else |
Peter Zijlstra | d19ca30 | 2008-04-19 19:45:00 +0200 | [diff] [blame] | 132 | SEQ_printf(m, "%15Ld %15Ld %15Ld.%06ld %15Ld.%06ld %15Ld.%06ld", |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 133 | 0LL, 0LL, 0LL, 0L, 0LL, 0L, 0LL, 0L); |
Ingo Molnar | 6cfb0d5 | 2007-08-02 17:41:40 +0200 | [diff] [blame] | 134 | #endif |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 135 | #ifdef CONFIG_CGROUP_SCHED |
| 136 | SEQ_printf(m, " %s", task_group_path(task_group(p))); |
| 137 | #endif |
Peter Zijlstra | d19ca30 | 2008-04-19 19:45:00 +0200 | [diff] [blame] | 138 | |
Peter Zijlstra | d19ca30 | 2008-04-19 19:45:00 +0200 | [diff] [blame] | 139 | SEQ_printf(m, "\n"); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 140 | } |
| 141 | |
Ingo Molnar | a48da48 | 2007-08-09 11:16:51 +0200 | [diff] [blame] | 142 | static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu) |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 143 | { |
| 144 | struct task_struct *g, *p; |
Peter Zijlstra | ab63a63 | 2007-10-25 14:02:45 +0200 | [diff] [blame] | 145 | unsigned long flags; |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 146 | |
| 147 | SEQ_printf(m, |
| 148 | "\nrunnable tasks:\n" |
Mike Galbraith | c86da3a | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 149 | " task PID tree-key switches prio" |
| 150 | " exec-runtime sum-exec sum-sleep\n" |
Ingo Molnar | 1a75b94 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 151 | "------------------------------------------------------" |
Mike Galbraith | c86da3a | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 152 | "----------------------------------------------------\n"); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 153 | |
Peter Zijlstra | ab63a63 | 2007-10-25 14:02:45 +0200 | [diff] [blame] | 154 | read_lock_irqsave(&tasklist_lock, flags); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 155 | |
| 156 | do_each_thread(g, p) { |
Peter Zijlstra | fd2f441 | 2011-04-05 17:23:44 +0200 | [diff] [blame] | 157 | if (!p->on_rq || task_cpu(p) != rq_cpu) |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 158 | continue; |
| 159 | |
Ingo Molnar | a48da48 | 2007-08-09 11:16:51 +0200 | [diff] [blame] | 160 | print_task(m, rq, p); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 161 | } while_each_thread(g, p); |
| 162 | |
Peter Zijlstra | ab63a63 | 2007-10-25 14:02:45 +0200 | [diff] [blame] | 163 | read_unlock_irqrestore(&tasklist_lock, flags); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 164 | } |
| 165 | |
Ingo Molnar | 5cef9ec | 2007-08-09 11:16:47 +0200 | [diff] [blame] | 166 | void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq) |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 167 | { |
Ingo Molnar | 86d9560 | 2007-10-15 17:00:06 +0200 | [diff] [blame] | 168 | s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1, |
| 169 | spread, rq0_min_vruntime, spread0; |
Hitoshi Mitake | 348ec61 | 2009-06-17 22:20:55 +0900 | [diff] [blame] | 170 | struct rq *rq = cpu_rq(cpu); |
Ingo Molnar | 67e12ea | 2007-10-15 17:00:05 +0200 | [diff] [blame] | 171 | struct sched_entity *last; |
| 172 | unsigned long flags; |
| 173 | |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 174 | #ifdef CONFIG_FAIR_GROUP_SCHED |
| 175 | SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, task_group_path(cfs_rq->tg)); |
| 176 | #else |
Peter Zijlstra | ada18de2 | 2008-06-19 14:22:24 +0200 | [diff] [blame] | 177 | SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu); |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 178 | #endif |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 179 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock", |
| 180 | SPLIT_NS(cfs_rq->exec_clock)); |
Ingo Molnar | 67e12ea | 2007-10-15 17:00:05 +0200 | [diff] [blame] | 181 | |
Thomas Gleixner | 05fa785 | 2009-11-17 14:28:38 +0100 | [diff] [blame] | 182 | raw_spin_lock_irqsave(&rq->lock, flags); |
Ingo Molnar | 67e12ea | 2007-10-15 17:00:05 +0200 | [diff] [blame] | 183 | if (cfs_rq->rb_leftmost) |
Rik van Riel | ac53db5 | 2011-02-01 09:51:03 -0500 | [diff] [blame] | 184 | MIN_vruntime = (__pick_first_entity(cfs_rq))->vruntime; |
Ingo Molnar | 67e12ea | 2007-10-15 17:00:05 +0200 | [diff] [blame] | 185 | last = __pick_last_entity(cfs_rq); |
| 186 | if (last) |
| 187 | max_vruntime = last->vruntime; |
Peter Zijlstra | 5ac5c4d | 2008-11-10 10:46:32 +0100 | [diff] [blame] | 188 | min_vruntime = cfs_rq->min_vruntime; |
Hitoshi Mitake | 348ec61 | 2009-06-17 22:20:55 +0900 | [diff] [blame] | 189 | rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime; |
Thomas Gleixner | 05fa785 | 2009-11-17 14:28:38 +0100 | [diff] [blame] | 190 | raw_spin_unlock_irqrestore(&rq->lock, flags); |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 191 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "MIN_vruntime", |
| 192 | SPLIT_NS(MIN_vruntime)); |
| 193 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "min_vruntime", |
| 194 | SPLIT_NS(min_vruntime)); |
| 195 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "max_vruntime", |
| 196 | SPLIT_NS(max_vruntime)); |
Ingo Molnar | 67e12ea | 2007-10-15 17:00:05 +0200 | [diff] [blame] | 197 | spread = max_vruntime - MIN_vruntime; |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 198 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread", |
| 199 | SPLIT_NS(spread)); |
Ingo Molnar | 86d9560 | 2007-10-15 17:00:06 +0200 | [diff] [blame] | 200 | spread0 = min_vruntime - rq0_min_vruntime; |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 201 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread0", |
| 202 | SPLIT_NS(spread0)); |
Peter Zijlstra | 5ac5c4d | 2008-11-10 10:46:32 +0100 | [diff] [blame] | 203 | SEQ_printf(m, " .%-30s: %d\n", "nr_spread_over", |
Peter Zijlstra | ddc9729 | 2007-10-15 17:00:10 +0200 | [diff] [blame] | 204 | cfs_rq->nr_spread_over); |
Peter Zijlstra | c82513e | 2012-04-26 13:12:27 +0200 | [diff] [blame] | 205 | SEQ_printf(m, " .%-30s: %d\n", "nr_running", cfs_rq->nr_running); |
Peter Zijlstra | 2069dd7 | 2010-11-15 15:47:00 -0800 | [diff] [blame] | 206 | SEQ_printf(m, " .%-30s: %ld\n", "load", cfs_rq->load.weight); |
Peter Zijlstra | c09595f | 2008-06-27 13:41:14 +0200 | [diff] [blame] | 207 | #ifdef CONFIG_FAIR_GROUP_SCHED |
| 208 | #ifdef CONFIG_SMP |
Peter Zijlstra | 2069dd7 | 2010-11-15 15:47:00 -0800 | [diff] [blame] | 209 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "load_avg", |
| 210 | SPLIT_NS(cfs_rq->load_avg)); |
| 211 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "load_period", |
| 212 | SPLIT_NS(cfs_rq->load_period)); |
| 213 | SEQ_printf(m, " .%-30s: %ld\n", "load_contrib", |
| 214 | cfs_rq->load_contribution); |
| 215 | SEQ_printf(m, " .%-30s: %d\n", "load_tg", |
Mike Galbraith | 5091faa | 2010-11-30 14:18:03 +0100 | [diff] [blame] | 216 | atomic_read(&cfs_rq->tg->load_weight)); |
Peter Zijlstra | c09595f | 2008-06-27 13:41:14 +0200 | [diff] [blame] | 217 | #endif |
Peter Zijlstra | 2069dd7 | 2010-11-15 15:47:00 -0800 | [diff] [blame] | 218 | |
Bharata B Rao | ff9b48c | 2008-11-10 21:34:09 +0530 | [diff] [blame] | 219 | print_cfs_group_stats(m, cpu, cfs_rq->tg); |
Peter Zijlstra | c09595f | 2008-06-27 13:41:14 +0200 | [diff] [blame] | 220 | #endif |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 221 | } |
| 222 | |
Peter Zijlstra | ada18de2 | 2008-06-19 14:22:24 +0200 | [diff] [blame] | 223 | void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq) |
| 224 | { |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 225 | #ifdef CONFIG_RT_GROUP_SCHED |
| 226 | SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, task_group_path(rt_rq->tg)); |
| 227 | #else |
Peter Zijlstra | ada18de2 | 2008-06-19 14:22:24 +0200 | [diff] [blame] | 228 | SEQ_printf(m, "\nrt_rq[%d]:\n", cpu); |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 229 | #endif |
Peter Zijlstra | ada18de2 | 2008-06-19 14:22:24 +0200 | [diff] [blame] | 230 | |
| 231 | #define P(x) \ |
| 232 | SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rt_rq->x)) |
| 233 | #define PN(x) \ |
| 234 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x)) |
| 235 | |
| 236 | P(rt_nr_running); |
| 237 | P(rt_throttled); |
| 238 | PN(rt_time); |
| 239 | PN(rt_runtime); |
| 240 | |
| 241 | #undef PN |
| 242 | #undef P |
| 243 | } |
| 244 | |
Peter Zijlstra | 5bb6b1e | 2010-11-19 21:11:09 +0100 | [diff] [blame] | 245 | extern __read_mostly int sched_clock_running; |
| 246 | |
Ingo Molnar | a48da48 | 2007-08-09 11:16:51 +0200 | [diff] [blame] | 247 | static void print_cpu(struct seq_file *m, int cpu) |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 248 | { |
Hitoshi Mitake | 348ec61 | 2009-06-17 22:20:55 +0900 | [diff] [blame] | 249 | struct rq *rq = cpu_rq(cpu); |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 250 | unsigned long flags; |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 251 | |
| 252 | #ifdef CONFIG_X86 |
| 253 | { |
| 254 | unsigned int freq = cpu_khz ? : 1; |
| 255 | |
| 256 | SEQ_printf(m, "\ncpu#%d, %u.%03u MHz\n", |
| 257 | cpu, freq / 1000, (freq % 1000)); |
| 258 | } |
| 259 | #else |
| 260 | SEQ_printf(m, "\ncpu#%d\n", cpu); |
| 261 | #endif |
| 262 | |
Peter Zijlstra | 13e099d | 2012-05-14 14:34:00 +0200 | [diff] [blame] | 263 | #define P(x) \ |
| 264 | do { \ |
| 265 | if (sizeof(rq->x) == 4) \ |
| 266 | SEQ_printf(m, " .%-30s: %ld\n", #x, (long)(rq->x)); \ |
| 267 | else \ |
| 268 | SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rq->x));\ |
| 269 | } while (0) |
| 270 | |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 271 | #define PN(x) \ |
| 272 | SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x)) |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 273 | |
| 274 | P(nr_running); |
| 275 | SEQ_printf(m, " .%-30s: %lu\n", "load", |
Dmitry Adamushko | 495eca4 | 2007-10-15 17:00:06 +0200 | [diff] [blame] | 276 | rq->load.weight); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 277 | P(nr_switches); |
| 278 | P(nr_load_updates); |
| 279 | P(nr_uninterruptible); |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 280 | PN(next_balance); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 281 | P(curr->pid); |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 282 | PN(clock); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 283 | P(cpu_load[0]); |
| 284 | P(cpu_load[1]); |
| 285 | P(cpu_load[2]); |
| 286 | P(cpu_load[3]); |
| 287 | P(cpu_load[4]); |
| 288 | #undef P |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 289 | #undef PN |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 290 | |
Peter Zijlstra | 5ac5c4d | 2008-11-10 10:46:32 +0100 | [diff] [blame] | 291 | #ifdef CONFIG_SCHEDSTATS |
| 292 | #define P(n) SEQ_printf(m, " .%-30s: %d\n", #n, rq->n); |
Mike Galbraith | 1b9508f | 2009-11-04 17:53:50 +0100 | [diff] [blame] | 293 | #define P64(n) SEQ_printf(m, " .%-30s: %Ld\n", #n, rq->n); |
Peter Zijlstra | 5ac5c4d | 2008-11-10 10:46:32 +0100 | [diff] [blame] | 294 | |
Peter Zijlstra | 5ac5c4d | 2008-11-10 10:46:32 +0100 | [diff] [blame] | 295 | P(yld_count); |
| 296 | |
Peter Zijlstra | 5ac5c4d | 2008-11-10 10:46:32 +0100 | [diff] [blame] | 297 | P(sched_count); |
| 298 | P(sched_goidle); |
Mike Galbraith | 1b9508f | 2009-11-04 17:53:50 +0100 | [diff] [blame] | 299 | #ifdef CONFIG_SMP |
| 300 | P64(avg_idle); |
| 301 | #endif |
Peter Zijlstra | 5ac5c4d | 2008-11-10 10:46:32 +0100 | [diff] [blame] | 302 | |
| 303 | P(ttwu_count); |
| 304 | P(ttwu_local); |
| 305 | |
Peter Zijlstra | 5ac5c4d | 2008-11-10 10:46:32 +0100 | [diff] [blame] | 306 | #undef P |
Yong Zhang | fce2097 | 2011-01-14 15:57:39 +0800 | [diff] [blame] | 307 | #undef P64 |
Peter Zijlstra | 5ac5c4d | 2008-11-10 10:46:32 +0100 | [diff] [blame] | 308 | #endif |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 309 | spin_lock_irqsave(&sched_debug_lock, flags); |
Ingo Molnar | 5cef9ec | 2007-08-09 11:16:47 +0200 | [diff] [blame] | 310 | print_cfs_stats(m, cpu); |
Peter Zijlstra | ada18de2 | 2008-06-19 14:22:24 +0200 | [diff] [blame] | 311 | print_rt_stats(m, cpu); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 312 | |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 313 | rcu_read_lock(); |
Ingo Molnar | a48da48 | 2007-08-09 11:16:51 +0200 | [diff] [blame] | 314 | print_rq(m, rq, cpu); |
Bharata B Rao | efe25c2 | 2011-01-11 15:41:54 +0530 | [diff] [blame] | 315 | rcu_read_unlock(); |
| 316 | spin_unlock_irqrestore(&sched_debug_lock, flags); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 317 | } |
| 318 | |
Christian Ehrhardt | 1983a92 | 2009-11-30 12:16:47 +0100 | [diff] [blame] | 319 | static const char *sched_tunable_scaling_names[] = { |
| 320 | "none", |
| 321 | "logaritmic", |
| 322 | "linear" |
| 323 | }; |
| 324 | |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 325 | static int sched_debug_show(struct seq_file *m, void *v) |
| 326 | { |
Peter Zijlstra | 5bb6b1e | 2010-11-19 21:11:09 +0100 | [diff] [blame] | 327 | u64 ktime, sched_clk, cpu_clk; |
| 328 | unsigned long flags; |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 329 | int cpu; |
| 330 | |
Peter Zijlstra | 5bb6b1e | 2010-11-19 21:11:09 +0100 | [diff] [blame] | 331 | local_irq_save(flags); |
| 332 | ktime = ktime_to_ns(ktime_get()); |
| 333 | sched_clk = sched_clock(); |
| 334 | cpu_clk = local_clock(); |
| 335 | local_irq_restore(flags); |
| 336 | |
| 337 | SEQ_printf(m, "Sched Debug Version: v0.10, %s %.*s\n", |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 338 | init_utsname()->release, |
| 339 | (int)strcspn(init_utsname()->version, " "), |
| 340 | init_utsname()->version); |
| 341 | |
Peter Zijlstra | 5bb6b1e | 2010-11-19 21:11:09 +0100 | [diff] [blame] | 342 | #define P(x) \ |
| 343 | SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x)) |
| 344 | #define PN(x) \ |
| 345 | SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x)) |
| 346 | PN(ktime); |
| 347 | PN(sched_clk); |
| 348 | PN(cpu_clk); |
| 349 | P(jiffies); |
| 350 | #ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK |
| 351 | P(sched_clock_stable); |
| 352 | #endif |
| 353 | #undef PN |
| 354 | #undef P |
| 355 | |
| 356 | SEQ_printf(m, "\n"); |
| 357 | SEQ_printf(m, "sysctl_sched\n"); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 358 | |
Ingo Molnar | 1aa4731 | 2007-10-15 17:00:10 +0200 | [diff] [blame] | 359 | #define P(x) \ |
Ingo Molnar | d822cec | 2007-10-15 17:00:10 +0200 | [diff] [blame] | 360 | SEQ_printf(m, " .%-40s: %Ld\n", #x, (long long)(x)) |
Ingo Molnar | 1aa4731 | 2007-10-15 17:00:10 +0200 | [diff] [blame] | 361 | #define PN(x) \ |
Ingo Molnar | d822cec | 2007-10-15 17:00:10 +0200 | [diff] [blame] | 362 | SEQ_printf(m, " .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x)) |
Ingo Molnar | 1aa4731 | 2007-10-15 17:00:10 +0200 | [diff] [blame] | 363 | PN(sysctl_sched_latency); |
Peter Zijlstra | b2be5e9 | 2007-11-09 22:39:37 +0100 | [diff] [blame] | 364 | PN(sysctl_sched_min_granularity); |
Ingo Molnar | 1aa4731 | 2007-10-15 17:00:10 +0200 | [diff] [blame] | 365 | PN(sysctl_sched_wakeup_granularity); |
Josh Hunt | eebef74 | 2010-07-19 12:31:16 -0700 | [diff] [blame] | 366 | P(sysctl_sched_child_runs_first); |
Ingo Molnar | 1aa4731 | 2007-10-15 17:00:10 +0200 | [diff] [blame] | 367 | P(sysctl_sched_features); |
| 368 | #undef PN |
| 369 | #undef P |
| 370 | |
Christian Ehrhardt | 1983a92 | 2009-11-30 12:16:47 +0100 | [diff] [blame] | 371 | SEQ_printf(m, " .%-40s: %d (%s)\n", "sysctl_sched_tunable_scaling", |
| 372 | sysctl_sched_tunable_scaling, |
| 373 | sched_tunable_scaling_names[sysctl_sched_tunable_scaling]); |
| 374 | |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 375 | for_each_online_cpu(cpu) |
Ingo Molnar | a48da48 | 2007-08-09 11:16:51 +0200 | [diff] [blame] | 376 | print_cpu(m, cpu); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 377 | |
| 378 | SEQ_printf(m, "\n"); |
| 379 | |
| 380 | return 0; |
| 381 | } |
| 382 | |
Peter Zijlstra | 029632f | 2011-10-25 10:00:11 +0200 | [diff] [blame] | 383 | void sysrq_sched_debug_show(void) |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 384 | { |
| 385 | sched_debug_show(NULL, NULL); |
| 386 | } |
| 387 | |
| 388 | static int sched_debug_open(struct inode *inode, struct file *filp) |
| 389 | { |
| 390 | return single_open(filp, sched_debug_show, NULL); |
| 391 | } |
| 392 | |
Arjan van de Ven | 0dbee3a | 2007-10-15 17:00:19 +0200 | [diff] [blame] | 393 | static const struct file_operations sched_debug_fops = { |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 394 | .open = sched_debug_open, |
| 395 | .read = seq_read, |
| 396 | .llseek = seq_lseek, |
Alexey Dobriyan | 5ea473a | 2007-07-31 00:38:50 -0700 | [diff] [blame] | 397 | .release = single_release, |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 398 | }; |
| 399 | |
| 400 | static int __init init_sched_debug_procfs(void) |
| 401 | { |
| 402 | struct proc_dir_entry *pe; |
| 403 | |
Li Zefan | a9cf4dd | 2008-10-30 15:23:34 +0800 | [diff] [blame] | 404 | pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 405 | if (!pe) |
| 406 | return -ENOMEM; |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | __initcall(init_sched_debug_procfs); |
| 411 | |
| 412 | void proc_sched_show_task(struct task_struct *p, struct seq_file *m) |
| 413 | { |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 414 | unsigned long nr_switches; |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 415 | |
Oleg Nesterov | 5089a97 | 2010-05-26 14:43:22 -0700 | [diff] [blame] | 416 | SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid, |
| 417 | get_nr_threads(p)); |
Ingo Molnar | 2d92f22 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 418 | SEQ_printf(m, |
| 419 | "---------------------------------------------------------\n"); |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 420 | #define __P(F) \ |
| 421 | SEQ_printf(m, "%-35s:%21Ld\n", #F, (long long)F) |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 422 | #define P(F) \ |
Ingo Molnar | 2d92f22 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 423 | SEQ_printf(m, "%-35s:%21Ld\n", #F, (long long)p->F) |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 424 | #define __PN(F) \ |
| 425 | SEQ_printf(m, "%-35s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F)) |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 426 | #define PN(F) \ |
Ingo Molnar | 2d92f22 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 427 | SEQ_printf(m, "%-35s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F)) |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 428 | |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 429 | PN(se.exec_start); |
| 430 | PN(se.vruntime); |
| 431 | PN(se.sum_exec_runtime); |
Ingo Molnar | 6cfb0d5 | 2007-08-02 17:41:40 +0200 | [diff] [blame] | 432 | |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 433 | nr_switches = p->nvcsw + p->nivcsw; |
| 434 | |
Ingo Molnar | 6cfb0d5 | 2007-08-02 17:41:40 +0200 | [diff] [blame] | 435 | #ifdef CONFIG_SCHEDSTATS |
Lucas De Marchi | 41acab8 | 2010-03-10 23:37:45 -0300 | [diff] [blame] | 436 | PN(se.statistics.wait_start); |
| 437 | PN(se.statistics.sleep_start); |
| 438 | PN(se.statistics.block_start); |
| 439 | PN(se.statistics.sleep_max); |
| 440 | PN(se.statistics.block_max); |
| 441 | PN(se.statistics.exec_max); |
| 442 | PN(se.statistics.slice_max); |
| 443 | PN(se.statistics.wait_max); |
| 444 | PN(se.statistics.wait_sum); |
| 445 | P(se.statistics.wait_count); |
| 446 | PN(se.statistics.iowait_sum); |
| 447 | P(se.statistics.iowait_count); |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 448 | P(se.nr_migrations); |
Lucas De Marchi | 41acab8 | 2010-03-10 23:37:45 -0300 | [diff] [blame] | 449 | P(se.statistics.nr_migrations_cold); |
| 450 | P(se.statistics.nr_failed_migrations_affine); |
| 451 | P(se.statistics.nr_failed_migrations_running); |
| 452 | P(se.statistics.nr_failed_migrations_hot); |
| 453 | P(se.statistics.nr_forced_migrations); |
| 454 | P(se.statistics.nr_wakeups); |
| 455 | P(se.statistics.nr_wakeups_sync); |
| 456 | P(se.statistics.nr_wakeups_migrate); |
| 457 | P(se.statistics.nr_wakeups_local); |
| 458 | P(se.statistics.nr_wakeups_remote); |
| 459 | P(se.statistics.nr_wakeups_affine); |
| 460 | P(se.statistics.nr_wakeups_affine_attempts); |
| 461 | P(se.statistics.nr_wakeups_passive); |
| 462 | P(se.statistics.nr_wakeups_idle); |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 463 | |
| 464 | { |
| 465 | u64 avg_atom, avg_per_cpu; |
| 466 | |
| 467 | avg_atom = p->se.sum_exec_runtime; |
| 468 | if (nr_switches) |
| 469 | do_div(avg_atom, nr_switches); |
| 470 | else |
| 471 | avg_atom = -1LL; |
| 472 | |
| 473 | avg_per_cpu = p->se.sum_exec_runtime; |
Ingo Molnar | c1a8974 | 2007-11-28 15:52:56 +0100 | [diff] [blame] | 474 | if (p->se.nr_migrations) { |
Roman Zippel | 6f6d6a1 | 2008-05-01 04:34:28 -0700 | [diff] [blame] | 475 | avg_per_cpu = div64_u64(avg_per_cpu, |
| 476 | p->se.nr_migrations); |
Ingo Molnar | c1a8974 | 2007-11-28 15:52:56 +0100 | [diff] [blame] | 477 | } else { |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 478 | avg_per_cpu = -1LL; |
Ingo Molnar | c1a8974 | 2007-11-28 15:52:56 +0100 | [diff] [blame] | 479 | } |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 480 | |
| 481 | __PN(avg_atom); |
| 482 | __PN(avg_per_cpu); |
| 483 | } |
Ingo Molnar | 6cfb0d5 | 2007-08-02 17:41:40 +0200 | [diff] [blame] | 484 | #endif |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 485 | __P(nr_switches); |
Ingo Molnar | 2d92f22 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 486 | SEQ_printf(m, "%-35s:%21Ld\n", |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 487 | "nr_voluntary_switches", (long long)p->nvcsw); |
| 488 | SEQ_printf(m, "%-35s:%21Ld\n", |
| 489 | "nr_involuntary_switches", (long long)p->nivcsw); |
| 490 | |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 491 | P(se.load.weight); |
| 492 | P(policy); |
| 493 | P(prio); |
Ingo Molnar | ef83a57 | 2007-10-15 17:00:08 +0200 | [diff] [blame] | 494 | #undef PN |
Ingo Molnar | cc36773 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 495 | #undef __PN |
| 496 | #undef P |
| 497 | #undef __P |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 498 | |
| 499 | { |
Ingo Molnar | 29d7b90 | 2008-11-16 08:07:15 +0100 | [diff] [blame] | 500 | unsigned int this_cpu = raw_smp_processor_id(); |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 501 | u64 t0, t1; |
| 502 | |
Ingo Molnar | 29d7b90 | 2008-11-16 08:07:15 +0100 | [diff] [blame] | 503 | t0 = cpu_clock(this_cpu); |
| 504 | t1 = cpu_clock(this_cpu); |
Ingo Molnar | 2d92f22 | 2007-10-15 17:00:18 +0200 | [diff] [blame] | 505 | SEQ_printf(m, "%-35s:%21Ld\n", |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 506 | "clock-delta", (long long)(t1-t0)); |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | void proc_sched_set_task(struct task_struct *p) |
| 511 | { |
Ingo Molnar | 6cfb0d5 | 2007-08-02 17:41:40 +0200 | [diff] [blame] | 512 | #ifdef CONFIG_SCHEDSTATS |
Lucas De Marchi | 41acab8 | 2010-03-10 23:37:45 -0300 | [diff] [blame] | 513 | memset(&p->se.statistics, 0, sizeof(p->se.statistics)); |
Ingo Molnar | 6cfb0d5 | 2007-08-02 17:41:40 +0200 | [diff] [blame] | 514 | #endif |
Ingo Molnar | 43ae34c | 2007-07-09 18:52:00 +0200 | [diff] [blame] | 515 | } |