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-rw-r--r--kernel/sched_debug.c525
1 files changed, 0 insertions, 525 deletions
diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
deleted file mode 100644
index 67f95aada4b9..000000000000
--- a/kernel/sched_debug.c
+++ /dev/null
@@ -1,525 +0,0 @@
-/*
- * kernel/time/sched_debug.c
- *
- * Print the CFS rbtree
- *
- * Copyright(C) 2007, Red Hat, Inc., Ingo Molnar
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/proc_fs.h>
-#include <linux/sched.h>
-#include <linux/seq_file.h>
-#include <linux/kallsyms.h>
-#include <linux/utsname.h>
-
-/*
- * This allows printing both to /proc/sched_debug and
- * to the console
- */
-#define SEQ_printf(m, x...) \
- do { \
- if (m) \
- seq_printf(m, x); \
- else \
- printk(x); \
- } while (0)
-
-/*
- * Ease the printing of nsec fields:
- */
-static long long nsec_high(unsigned long long nsec)
-{
- if ((long long)nsec < 0) {
- nsec = -nsec;
- do_div(nsec, 1000000);
- return -nsec;
- }
- do_div(nsec, 1000000);
-
- return nsec;
-}
-
-static unsigned long nsec_low(unsigned long long nsec)
-{
- if ((long long)nsec < 0)
- nsec = -nsec;
-
- return do_div(nsec, 1000000);
-}
-
-#define SPLIT_NS(x) nsec_high(x), nsec_low(x)
-
-#ifdef CONFIG_FAIR_GROUP_SCHED
-static void print_cfs_group_stats(struct seq_file *m, int cpu,
- struct task_group *tg)
-{
- struct sched_entity *se = tg->se[cpu];
- if (!se)
- return;
-
-#define P(F) \
- SEQ_printf(m, " .%-30s: %lld\n", #F, (long long)F)
-#define PN(F) \
- SEQ_printf(m, " .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)F))
-
- PN(se->exec_start);
- PN(se->vruntime);
- PN(se->sum_exec_runtime);
-#ifdef CONFIG_SCHEDSTATS
- PN(se->wait_start);
- PN(se->sleep_start);
- PN(se->block_start);
- PN(se->sleep_max);
- PN(se->block_max);
- PN(se->exec_max);
- PN(se->slice_max);
- PN(se->wait_max);
- PN(se->wait_sum);
- P(se->wait_count);
-#endif
- P(se->load.weight);
-#undef PN
-#undef P
-}
-#endif
-
-static void
-print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
-{
- if (rq->curr == p)
- SEQ_printf(m, "R");
- else
- SEQ_printf(m, " ");
-
- SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ",
- p->comm, p->pid,
- SPLIT_NS(p->se.vruntime),
- (long long)(p->nvcsw + p->nivcsw),
- p->prio);
-#ifdef CONFIG_SCHEDSTATS
- SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
- SPLIT_NS(p->se.vruntime),
- SPLIT_NS(p->se.sum_exec_runtime),
- SPLIT_NS(p->se.sum_sleep_runtime));
-#else
- SEQ_printf(m, "%15Ld %15Ld %15Ld.%06ld %15Ld.%06ld %15Ld.%06ld",
- 0LL, 0LL, 0LL, 0L, 0LL, 0L, 0LL, 0L);
-#endif
-
-#ifdef CONFIG_CGROUP_SCHED
- {
- char path[64];
-
- cgroup_path(task_group(p)->css.cgroup, path, sizeof(path));
- SEQ_printf(m, " %s", path);
- }
-#endif
- SEQ_printf(m, "\n");
-}
-
-static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu)
-{
- struct task_struct *g, *p;
- unsigned long flags;
-
- SEQ_printf(m,
- "\nrunnable tasks:\n"
- " task PID tree-key switches prio"
- " exec-runtime sum-exec sum-sleep\n"
- "------------------------------------------------------"
- "----------------------------------------------------\n");
-
- read_lock_irqsave(&tasklist_lock, flags);
-
- do_each_thread(g, p) {
- if (!p->se.on_rq || task_cpu(p) != rq_cpu)
- continue;
-
- print_task(m, rq, p);
- } while_each_thread(g, p);
-
- read_unlock_irqrestore(&tasklist_lock, flags);
-}
-
-#if defined(CONFIG_CGROUP_SCHED) && \
- (defined(CONFIG_FAIR_GROUP_SCHED) || defined(CONFIG_RT_GROUP_SCHED))
-static void task_group_path(struct task_group *tg, char *buf, int buflen)
-{
- /* may be NULL if the underlying cgroup isn't fully-created yet */
- if (!tg->css.cgroup) {
- buf[0] = '\0';
- return;
- }
- cgroup_path(tg->css.cgroup, buf, buflen);
-}
-#endif
-
-void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
-{
- s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
- spread, rq0_min_vruntime, spread0;
- struct rq *rq = cpu_rq(cpu);
- struct sched_entity *last;
- unsigned long flags;
-
-#if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED)
- char path[128];
- struct task_group *tg = cfs_rq->tg;
-
- task_group_path(tg, path, sizeof(path));
-
- SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, path);
-#elif defined(CONFIG_USER_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED)
- {
- uid_t uid = cfs_rq->tg->uid;
- SEQ_printf(m, "\ncfs_rq[%d] for UID: %u\n", cpu, uid);
- }
-#else
- SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
-#endif
- SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock",
- SPLIT_NS(cfs_rq->exec_clock));
-
- raw_spin_lock_irqsave(&rq->lock, flags);
- if (cfs_rq->rb_leftmost)
- MIN_vruntime = (__pick_next_entity(cfs_rq))->vruntime;
- last = __pick_last_entity(cfs_rq);
- if (last)
- max_vruntime = last->vruntime;
- min_vruntime = cfs_rq->min_vruntime;
- rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime;
- raw_spin_unlock_irqrestore(&rq->lock, flags);
- SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "MIN_vruntime",
- SPLIT_NS(MIN_vruntime));
- SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "min_vruntime",
- SPLIT_NS(min_vruntime));
- SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "max_vruntime",
- SPLIT_NS(max_vruntime));
- spread = max_vruntime - MIN_vruntime;
- SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread",
- SPLIT_NS(spread));
- spread0 = min_vruntime - rq0_min_vruntime;
- SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread0",
- SPLIT_NS(spread0));
- SEQ_printf(m, " .%-30s: %ld\n", "nr_running", cfs_rq->nr_running);
- SEQ_printf(m, " .%-30s: %ld\n", "load", cfs_rq->load.weight);
-
- SEQ_printf(m, " .%-30s: %d\n", "nr_spread_over",
- cfs_rq->nr_spread_over);
-#ifdef CONFIG_FAIR_GROUP_SCHED
-#ifdef CONFIG_SMP
- SEQ_printf(m, " .%-30s: %lu\n", "shares", cfs_rq->shares);
-#endif
- print_cfs_group_stats(m, cpu, cfs_rq->tg);
-#endif
-}
-
-void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
-{
-#if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_RT_GROUP_SCHED)
- char path[128];
- struct task_group *tg = rt_rq->tg;
-
- task_group_path(tg, path, sizeof(path));
-
- SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, path);
-#else
- SEQ_printf(m, "\nrt_rq[%d]:\n", cpu);
-#endif
-
-
-#define P(x) \
- SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rt_rq->x))
-#define PN(x) \
- SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x))
-
- P(rt_nr_running);
- P(rt_throttled);
- PN(rt_time);
- PN(rt_runtime);
-
-#undef PN
-#undef P
-}
-
-static void print_cpu(struct seq_file *m, int cpu)
-{
- struct rq *rq = cpu_rq(cpu);
-
-#ifdef CONFIG_X86
- {
- unsigned int freq = cpu_khz ? : 1;
-
- SEQ_printf(m, "\ncpu#%d, %u.%03u MHz\n",
- cpu, freq / 1000, (freq % 1000));
- }
-#else
- SEQ_printf(m, "\ncpu#%d\n", cpu);
-#endif
-
-#define P(x) \
- SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rq->x))
-#define PN(x) \
- SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x))
-
- P(nr_running);
- SEQ_printf(m, " .%-30s: %lu\n", "load",
- rq->load.weight);
- P(nr_switches);
- P(nr_load_updates);
- P(nr_uninterruptible);
- PN(next_balance);
- P(curr->pid);
- PN(clock);
- P(cpu_load[0]);
- P(cpu_load[1]);
- P(cpu_load[2]);
- P(cpu_load[3]);
- P(cpu_load[4]);
-#undef P
-#undef PN
-
-#ifdef CONFIG_SCHEDSTATS
-#define P(n) SEQ_printf(m, " .%-30s: %d\n", #n, rq->n);
-#define P64(n) SEQ_printf(m, " .%-30s: %Ld\n", #n, rq->n);
-
- P(yld_count);
-
- P(sched_switch);
- P(sched_count);
- P(sched_goidle);
-#ifdef CONFIG_SMP
- P64(avg_idle);
-#endif
-
- P(ttwu_count);
- P(ttwu_local);
-
- P(bkl_count);
-
-#undef P
-#endif
- print_cfs_stats(m, cpu);
- print_rt_stats(m, cpu);
-
- print_rq(m, rq, cpu);
-}
-
-static const char *sched_tunable_scaling_names[] = {
- "none",
- "logaritmic",
- "linear"
-};
-
-static int sched_debug_show(struct seq_file *m, void *v)
-{
- u64 now = ktime_to_ns(ktime_get());
- int cpu;
-
- SEQ_printf(m, "Sched Debug Version: v0.09, %s %.*s\n",
- init_utsname()->release,
- (int)strcspn(init_utsname()->version, " "),
- init_utsname()->version);
-
- SEQ_printf(m, "now at %Lu.%06ld msecs\n", SPLIT_NS(now));
-
-#define P(x) \
- SEQ_printf(m, " .%-40s: %Ld\n", #x, (long long)(x))
-#define PN(x) \
- SEQ_printf(m, " .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
- P(jiffies);
- PN(sysctl_sched_latency);
- PN(sysctl_sched_min_granularity);
- PN(sysctl_sched_wakeup_granularity);
- PN(sysctl_sched_child_runs_first);
- P(sysctl_sched_features);
-#undef PN
-#undef P
-
- SEQ_printf(m, " .%-40s: %d (%s)\n", "sysctl_sched_tunable_scaling",
- sysctl_sched_tunable_scaling,
- sched_tunable_scaling_names[sysctl_sched_tunable_scaling]);
-
- for_each_online_cpu(cpu)
- print_cpu(m, cpu);
-
- SEQ_printf(m, "\n");
-
- return 0;
-}
-
-static void sysrq_sched_debug_show(void)
-{
- sched_debug_show(NULL, NULL);
-}
-
-static int sched_debug_open(struct inode *inode, struct file *filp)
-{
- return single_open(filp, sched_debug_show, NULL);
-}
-
-static const struct file_operations sched_debug_fops = {
- .open = sched_debug_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int __init init_sched_debug_procfs(void)
-{
- struct proc_dir_entry *pe;
-
- pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops);
- if (!pe)
- return -ENOMEM;
- return 0;
-}
-
-__initcall(init_sched_debug_procfs);
-
-void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
-{
- unsigned long nr_switches;
- unsigned long flags;
- int num_threads = 1;
-
- if (lock_task_sighand(p, &flags)) {
- num_threads = atomic_read(&p->signal->count);
- unlock_task_sighand(p, &flags);
- }
-
- SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid, num_threads);
- SEQ_printf(m,
- "---------------------------------------------------------\n");
-#define __P(F) \
- SEQ_printf(m, "%-35s:%21Ld\n", #F, (long long)F)
-#define P(F) \
- SEQ_printf(m, "%-35s:%21Ld\n", #F, (long long)p->F)
-#define __PN(F) \
- SEQ_printf(m, "%-35s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
-#define PN(F) \
- SEQ_printf(m, "%-35s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
-
- PN(se.exec_start);
- PN(se.vruntime);
- PN(se.sum_exec_runtime);
- PN(se.avg_overlap);
- PN(se.avg_wakeup);
-
- nr_switches = p->nvcsw + p->nivcsw;
-
-#ifdef CONFIG_SCHEDSTATS
- PN(se.wait_start);
- PN(se.sleep_start);
- PN(se.block_start);
- PN(se.sleep_max);
- PN(se.block_max);
- PN(se.exec_max);
- PN(se.slice_max);
- PN(se.wait_max);
- PN(se.wait_sum);
- P(se.wait_count);
- PN(se.iowait_sum);
- P(se.iowait_count);
- P(sched_info.bkl_count);
- P(se.nr_migrations);
- P(se.nr_migrations_cold);
- P(se.nr_failed_migrations_affine);
- P(se.nr_failed_migrations_running);
- P(se.nr_failed_migrations_hot);
- P(se.nr_forced_migrations);
- P(se.nr_wakeups);
- P(se.nr_wakeups_sync);
- P(se.nr_wakeups_migrate);
- P(se.nr_wakeups_local);
- P(se.nr_wakeups_remote);
- P(se.nr_wakeups_affine);
- P(se.nr_wakeups_affine_attempts);
- P(se.nr_wakeups_passive);
- P(se.nr_wakeups_idle);
-
- {
- u64 avg_atom, avg_per_cpu;
-
- avg_atom = p->se.sum_exec_runtime;
- if (nr_switches)
- do_div(avg_atom, nr_switches);
- else
- avg_atom = -1LL;
-
- avg_per_cpu = p->se.sum_exec_runtime;
- if (p->se.nr_migrations) {
- avg_per_cpu = div64_u64(avg_per_cpu,
- p->se.nr_migrations);
- } else {
- avg_per_cpu = -1LL;
- }
-
- __PN(avg_atom);
- __PN(avg_per_cpu);
- }
-#endif
- __P(nr_switches);
- SEQ_printf(m, "%-35s:%21Ld\n",
- "nr_voluntary_switches", (long long)p->nvcsw);
- SEQ_printf(m, "%-35s:%21Ld\n",
- "nr_involuntary_switches", (long long)p->nivcsw);
-
- P(se.load.weight);
- P(policy);
- P(prio);
-#undef PN
-#undef __PN
-#undef P
-#undef __P
-
- {
- unsigned int this_cpu = raw_smp_processor_id();
- u64 t0, t1;
-
- t0 = cpu_clock(this_cpu);
- t1 = cpu_clock(this_cpu);
- SEQ_printf(m, "%-35s:%21Ld\n",
- "clock-delta", (long long)(t1-t0));
- }
-}
-
-void proc_sched_set_task(struct task_struct *p)
-{
-#ifdef CONFIG_SCHEDSTATS
- p->se.wait_max = 0;
- p->se.wait_sum = 0;
- p->se.wait_count = 0;
- p->se.iowait_sum = 0;
- p->se.iowait_count = 0;
- p->se.sleep_max = 0;
- p->se.sum_sleep_runtime = 0;
- p->se.block_max = 0;
- p->se.exec_max = 0;
- p->se.slice_max = 0;
- p->se.nr_migrations = 0;
- p->se.nr_migrations_cold = 0;
- p->se.nr_failed_migrations_affine = 0;
- p->se.nr_failed_migrations_running = 0;
- p->se.nr_failed_migrations_hot = 0;
- p->se.nr_forced_migrations = 0;
- p->se.nr_wakeups = 0;
- p->se.nr_wakeups_sync = 0;
- p->se.nr_wakeups_migrate = 0;
- p->se.nr_wakeups_local = 0;
- p->se.nr_wakeups_remote = 0;
- p->se.nr_wakeups_affine = 0;
- p->se.nr_wakeups_affine_attempts = 0;
- p->se.nr_wakeups_passive = 0;
- p->se.nr_wakeups_idle = 0;
- p->sched_info.bkl_count = 0;
-#endif
- p->se.sum_exec_runtime = 0;
- p->se.prev_sum_exec_runtime = 0;
- p->nvcsw = 0;
- p->nivcsw = 0;
-}
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