[linux-2.6-block.git] / kernel / sched_debug.c

/*
 * 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->statistics.wait_start);
	PN(se->statistics.sleep_start);
	PN(se->statistics.block_start);
	PN(se->statistics.sleep_max);
	PN(se->statistics.block_max);
	PN(se->statistics.exec_max);
	PN(se->statistics.slice_max);
	PN(se->statistics.wait_max);
	PN(se->statistics.wait_sum);
	P(se->statistics.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.statistics.sum_sleep_runtime));
#else
	SEQ_printf(m, "%15Ld %15Ld %15Ld.%06ld %15Ld.%06ld %15Ld.%06ld",
		0LL, 0LL, 0LL, 0L, 0LL, 0L, 0LL, 0L);
#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);
}

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;

	SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
	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: %d\n", "nr_spread_over",
			cfs_rq->nr_spread_over);
	SEQ_printf(m, "  .%-30s: %ld\n", "nr_running", cfs_rq->nr_running);
	SEQ_printf(m, "  .%-30s: %ld\n", "load", cfs_rq->load.weight);
#ifdef CONFIG_FAIR_GROUP_SCHED
#ifdef CONFIG_SMP
	SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "load_avg",
			SPLIT_NS(cfs_rq->load_avg));
	SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "load_period",
			SPLIT_NS(cfs_rq->load_period));
	SEQ_printf(m, "  .%-30s: %ld\n", "load_contrib",
			cfs_rq->load_contribution);
	SEQ_printf(m, "  .%-30s: %d\n", "load_tg",
			atomic_read(&cfs_rq->tg->load_weight));
#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)
{
	SEQ_printf(m, "\nrt_rq[%d]:\n", cpu);

#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
}

extern __read_mostly int sched_clock_running;

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 ktime, sched_clk, cpu_clk;
	unsigned long flags;
	int cpu;

	local_irq_save(flags);
	ktime = ktime_to_ns(ktime_get());
	sched_clk = sched_clock();
	cpu_clk = local_clock();
	local_irq_restore(flags);

	SEQ_printf(m, "Sched Debug Version: v0.10, %s %.*s\n",
		init_utsname()->release,
		(int)strcspn(init_utsname()->version, " "),
		init_utsname()->version);

#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))
	PN(ktime);
	PN(sched_clk);
	PN(cpu_clk);
	P(jiffies);
#ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
	P(sched_clock_stable);
#endif
#undef PN
#undef P

	SEQ_printf(m, "\n");
	SEQ_printf(m, "sysctl_sched\n");

#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))
	PN(sysctl_sched_latency);
	PN(sysctl_sched_min_granularity);
	PN(sysctl_sched_wakeup_granularity);
	P(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;

	SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid,
						get_nr_threads(p));
	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);

	nr_switches = p->nvcsw + p->nivcsw;

#ifdef CONFIG_SCHEDSTATS
	PN(se.statistics.wait_start);
	PN(se.statistics.sleep_start);
	PN(se.statistics.block_start);
	PN(se.statistics.sleep_max);
	PN(se.statistics.block_max);
	PN(se.statistics.exec_max);
	PN(se.statistics.slice_max);
	PN(se.statistics.wait_max);
	PN(se.statistics.wait_sum);
	P(se.statistics.wait_count);
	PN(se.statistics.iowait_sum);
	P(se.statistics.iowait_count);
	P(sched_info.bkl_count);
	P(se.nr_migrations);
	P(se.statistics.nr_migrations_cold);
	P(se.statistics.nr_failed_migrations_affine);
	P(se.statistics.nr_failed_migrations_running);
	P(se.statistics.nr_failed_migrations_hot);
	P(se.statistics.nr_forced_migrations);
	P(se.statistics.nr_wakeups);
	P(se.statistics.nr_wakeups_sync);
	P(se.statistics.nr_wakeups_migrate);
	P(se.statistics.nr_wakeups_local);
	P(se.statistics.nr_wakeups_remote);
	P(se.statistics.nr_wakeups_affine);
	P(se.statistics.nr_wakeups_affine_attempts);
	P(se.statistics.nr_wakeups_passive);
	P(se.statistics.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
	memset(&p->se.statistics, 0, sizeof(p->se.statistics));
#endif
}
Commit	Line	Data
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	56	#ifdef CONFIG_FAIR_GROUP_SCHED
5091faa4	57	static void print_cfs_group_stats(struct seq_file m, int cpu, struct task_group tg)
ff9b48c3 BR	58	{
	59	struct sched_entity *se = tg->se[cpu];
	60	if (!se)
	61	return;
	62
	63	#define P(F) \
	64	SEQ_printf(m, " .%-30s: %lld\n", #F, (long long)F)
	65	#define PN(F) \
	66	SEQ_printf(m, " .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)F))
	67
	68	PN(se->exec_start);
	69	PN(se->vruntime);
	70	PN(se->sum_exec_runtime);
	71	#ifdef CONFIG_SCHEDSTATS
41acab88 LDM	72	PN(se->statistics.wait_start);
	73	PN(se->statistics.sleep_start);
	74	PN(se->statistics.block_start);
	75	PN(se->statistics.sleep_max);
	76	PN(se->statistics.block_max);
	77	PN(se->statistics.exec_max);
	78	PN(se->statistics.slice_max);
	79	PN(se->statistics.wait_max);
	80	PN(se->statistics.wait_sum);
	81	P(se->statistics.wait_count);
ff9b48c3 BR	82	#endif
	83	P(se->load.weight);
	84	#undef PN
	85	#undef P
	86	}
	87	#endif
	88
43ae34cb	89	static void
a48da48b	90	print_task(struct seq_file m, struct rq rq, struct task_struct *p)
43ae34cb IM	91	{
	92	if (rq->curr == p)
	93	SEQ_printf(m, "R");
	94	else
	95	SEQ_printf(m, " ");
	96
ef83a571	97	SEQ_printf(m, "%15s %5d %9Ld.%06ld %9Ld %5d ",
43ae34cb	98	p->comm, p->pid,
ef83a571	99	SPLIT_NS(p->se.vruntime),
43ae34cb	100	(long long)(p->nvcsw + p->nivcsw),
6f605d83	101	p->prio);
6cfb0d5d	102	#ifdef CONFIG_SCHEDSTATS
d19ca308	103	SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
ef83a571 IM	104	SPLIT_NS(p->se.vruntime),
ef83a571 IM	105	SPLIT_NS(p->se.sum_exec_runtime),
41acab88	106	SPLIT_NS(p->se.statistics.sum_sleep_runtime));
6cfb0d5d	107	#else
d19ca308	108	SEQ_printf(m, "%15Ld %15Ld %15Ld.%06ld %15Ld.%06ld %15Ld.%06ld",
ef83a571	109	0LL, 0LL, 0LL, 0L, 0LL, 0L, 0LL, 0L);
6cfb0d5d	110	#endif
d19ca308	111
d19ca308	112	SEQ_printf(m, "\n");
43ae34cb IM	113	}
43ae34cb IM	114
a48da48b	115	static void print_rq(struct seq_file m, struct rq rq, int rq_cpu)
43ae34cb IM	116	{
43ae34cb IM	117	struct task_struct g, p;
ab63a633	118	unsigned long flags;
43ae34cb IM	119
	120	SEQ_printf(m,
	121	"\nrunnable tasks:\n"
c86da3a3 MG	122	" task PID tree-key switches prio"
c86da3a3 MG	123	" exec-runtime sum-exec sum-sleep\n"
1a75b94f	124	"------------------------------------------------------"
c86da3a3	125	"----------------------------------------------------\n");
43ae34cb	126
ab63a633	127	read_lock_irqsave(&tasklist_lock, flags);
43ae34cb IM	128
	129	do_each_thread(g, p) {
	130	if (!p->se.on_rq \|\| task_cpu(p) != rq_cpu)
	131	continue;
	132
a48da48b	133	print_task(m, rq, p);
43ae34cb IM	134	} while_each_thread(g, p);
43ae34cb IM	135
ab63a633	136	read_unlock_irqrestore(&tasklist_lock, flags);
43ae34cb IM	137	}
43ae34cb IM	138
5cef9eca	139	void print_cfs_rq(struct seq_file m, int cpu, struct cfs_rq cfs_rq)
43ae34cb	140	{
86d9560c IM	141	s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
86d9560c IM	142	spread, rq0_min_vruntime, spread0;
348ec61e	143	struct rq *rq = cpu_rq(cpu);
67e12eac IM	144	struct sched_entity *last;
	145	unsigned long flags;
	146
ada18de2	147	SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
ef83a571 IM	148	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock",
ef83a571 IM	149	SPLIT_NS(cfs_rq->exec_clock));
67e12eac	150
05fa785c	151	raw_spin_lock_irqsave(&rq->lock, flags);
67e12eac IM	152	if (cfs_rq->rb_leftmost)
	153	MIN_vruntime = (__pick_next_entity(cfs_rq))->vruntime;
	154	last = __pick_last_entity(cfs_rq);
	155	if (last)
	156	max_vruntime = last->vruntime;
5ac5c4d6	157	min_vruntime = cfs_rq->min_vruntime;
348ec61e	158	rq0_min_vruntime = cpu_rq(0)->cfs.min_vruntime;
05fa785c	159	raw_spin_unlock_irqrestore(&rq->lock, flags);
ef83a571 IM	160	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "MIN_vruntime",
	161	SPLIT_NS(MIN_vruntime));
	162	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "min_vruntime",
	163	SPLIT_NS(min_vruntime));
	164	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "max_vruntime",
	165	SPLIT_NS(max_vruntime));
67e12eac	166	spread = max_vruntime - MIN_vruntime;
ef83a571 IM	167	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread",
ef83a571 IM	168	SPLIT_NS(spread));
86d9560c	169	spread0 = min_vruntime - rq0_min_vruntime;
ef83a571 IM	170	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread0",
ef83a571 IM	171	SPLIT_NS(spread0));
5ac5c4d6	172	SEQ_printf(m, " .%-30s: %d\n", "nr_spread_over",
ddc97297	173	cfs_rq->nr_spread_over);
2069dd75 PZ	174	SEQ_printf(m, " .%-30s: %ld\n", "nr_running", cfs_rq->nr_running);
2069dd75 PZ	175	SEQ_printf(m, " .%-30s: %ld\n", "load", cfs_rq->load.weight);
c09595f6 PZ	176	#ifdef CONFIG_FAIR_GROUP_SCHED
c09595f6 PZ	177	#ifdef CONFIG_SMP
2069dd75 PZ	178	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "load_avg",
	179	SPLIT_NS(cfs_rq->load_avg));
	180	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "load_period",
	181	SPLIT_NS(cfs_rq->load_period));
	182	SEQ_printf(m, " .%-30s: %ld\n", "load_contrib",
	183	cfs_rq->load_contribution);
	184	SEQ_printf(m, " .%-30s: %d\n", "load_tg",
5091faa4	185	atomic_read(&cfs_rq->tg->load_weight));
c09595f6	186	#endif
2069dd75	187
ff9b48c3	188	print_cfs_group_stats(m, cpu, cfs_rq->tg);
c09595f6	189	#endif
43ae34cb IM	190	}
43ae34cb IM	191
ada18de2 PZ	192	void print_rt_rq(struct seq_file m, int cpu, struct rt_rq rt_rq)
ada18de2 PZ	193	{
ada18de2	194	SEQ_printf(m, "\nrt_rq[%d]:\n", cpu);
ada18de2 PZ	195
	196	#define P(x) \
	197	SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rt_rq->x))
	198	#define PN(x) \
	199	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x))
	200
	201	P(rt_nr_running);
	202	P(rt_throttled);
	203	PN(rt_time);
	204	PN(rt_runtime);
	205
	206	#undef PN
	207	#undef P
	208	}
	209
5bb6b1ea PZ	210	extern __read_mostly int sched_clock_running;
5bb6b1ea PZ	211
a48da48b	212	static void print_cpu(struct seq_file *m, int cpu)
43ae34cb	213	{
348ec61e	214	struct rq *rq = cpu_rq(cpu);
43ae34cb IM	215
	216	#ifdef CONFIG_X86
	217	{
	218	unsigned int freq = cpu_khz ? : 1;
	219
	220	SEQ_printf(m, "\ncpu#%d, %u.%03u MHz\n",
	221	cpu, freq / 1000, (freq % 1000));
	222	}
	223	#else
	224	SEQ_printf(m, "\ncpu#%d\n", cpu);
	225	#endif
	226
	227	#define P(x) \
	228	SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rq->x))
ef83a571 IM	229	#define PN(x) \
ef83a571 IM	230	SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rq->x))
43ae34cb IM	231
	232	P(nr_running);
	233	SEQ_printf(m, " .%-30s: %lu\n", "load",
495eca49	234	rq->load.weight);
43ae34cb IM	235	P(nr_switches);
	236	P(nr_load_updates);
	237	P(nr_uninterruptible);
ef83a571	238	PN(next_balance);
43ae34cb	239	P(curr->pid);
ef83a571	240	PN(clock);
43ae34cb IM	241	P(cpu_load[0]);
	242	P(cpu_load[1]);
	243	P(cpu_load[2]);
	244	P(cpu_load[3]);
	245	P(cpu_load[4]);
	246	#undef P
ef83a571	247	#undef PN
43ae34cb	248
5ac5c4d6 PZ	249	#ifdef CONFIG_SCHEDSTATS
5ac5c4d6 PZ	250	#define P(n) SEQ_printf(m, " .%-30s: %d\n", #n, rq->n);
1b9508f6	251	#define P64(n) SEQ_printf(m, " .%-30s: %Ld\n", #n, rq->n);
5ac5c4d6	252
5ac5c4d6 PZ	253	P(yld_count);
	254
	255	P(sched_switch);
	256	P(sched_count);
	257	P(sched_goidle);
1b9508f6 MG	258	#ifdef CONFIG_SMP
	259	P64(avg_idle);
	260	#endif
5ac5c4d6 PZ	261
	262	P(ttwu_count);
	263	P(ttwu_local);
	264
	265	P(bkl_count);
	266
	267	#undef P
	268	#endif
5cef9eca	269	print_cfs_stats(m, cpu);
ada18de2	270	print_rt_stats(m, cpu);
43ae34cb	271
a48da48b	272	print_rq(m, rq, cpu);
43ae34cb IM	273	}
43ae34cb IM	274
1983a922 CE	275	static const char *sched_tunable_scaling_names[] = {
	276	"none",
	277	"logaritmic",
	278	"linear"
	279	};
	280
43ae34cb IM	281	static int sched_debug_show(struct seq_file m, void v)
43ae34cb IM	282	{
5bb6b1ea PZ	283	u64 ktime, sched_clk, cpu_clk;
5bb6b1ea PZ	284	unsigned long flags;
43ae34cb IM	285	int cpu;
43ae34cb IM	286
5bb6b1ea PZ	287	local_irq_save(flags);
	288	ktime = ktime_to_ns(ktime_get());
	289	sched_clk = sched_clock();
	290	cpu_clk = local_clock();
	291	local_irq_restore(flags);
	292
	293	SEQ_printf(m, "Sched Debug Version: v0.10, %s %.*s\n",
43ae34cb IM	294	init_utsname()->release,
	295	(int)strcspn(init_utsname()->version, " "),
	296	init_utsname()->version);
	297
5bb6b1ea PZ	298	#define P(x) \
	299	SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x))
	300	#define PN(x) \
	301	SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
	302	PN(ktime);
	303	PN(sched_clk);
	304	PN(cpu_clk);
	305	P(jiffies);
	306	#ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
	307	P(sched_clock_stable);
	308	#endif
	309	#undef PN
	310	#undef P
	311
	312	SEQ_printf(m, "\n");
	313	SEQ_printf(m, "sysctl_sched\n");
43ae34cb	314
1aa4731e	315	#define P(x) \
d822cece	316	SEQ_printf(m, " .%-40s: %Ld\n", #x, (long long)(x))
1aa4731e	317	#define PN(x) \
d822cece	318	SEQ_printf(m, " .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
1aa4731e	319	PN(sysctl_sched_latency);
b2be5e96	320	PN(sysctl_sched_min_granularity);
1aa4731e	321	PN(sysctl_sched_wakeup_granularity);
eebef746	322	P(sysctl_sched_child_runs_first);
1aa4731e IM	323	P(sysctl_sched_features);
	324	#undef PN
	325	#undef P
	326
1983a922 CE	327	SEQ_printf(m, " .%-40s: %d (%s)\n", "sysctl_sched_tunable_scaling",
	328	sysctl_sched_tunable_scaling,
	329	sched_tunable_scaling_names[sysctl_sched_tunable_scaling]);
	330
43ae34cb	331	for_each_online_cpu(cpu)
a48da48b	332	print_cpu(m, cpu);
43ae34cb IM	333
	334	SEQ_printf(m, "\n");
	335
	336	return 0;
	337	}
	338
f3373461	339	static void sysrq_sched_debug_show(void)
43ae34cb IM	340	{
	341	sched_debug_show(NULL, NULL);
	342	}
	343
	344	static int sched_debug_open(struct inode inode, struct file filp)
	345	{
	346	return single_open(filp, sched_debug_show, NULL);
	347	}
	348
0dbee3a6	349	static const struct file_operations sched_debug_fops = {
43ae34cb IM	350	.open = sched_debug_open,
	351	.read = seq_read,
	352	.llseek = seq_lseek,
5ea473a1	353	.release = single_release,
43ae34cb IM	354	};
	355
	356	static int __init init_sched_debug_procfs(void)
	357	{
	358	struct proc_dir_entry *pe;
	359
a9cf4ddb	360	pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops);
43ae34cb IM	361	if (!pe)
43ae34cb IM	362	return -ENOMEM;
43ae34cb IM	363	return 0;
	364	}
	365
	366	__initcall(init_sched_debug_procfs);
	367
	368	void proc_sched_show_task(struct task_struct p, struct seq_file m)
	369	{
cc367732	370	unsigned long nr_switches;
43ae34cb	371
5089a976 ON	372	SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid,
5089a976 ON	373	get_nr_threads(p));
2d92f227 IM	374	SEQ_printf(m,
2d92f227 IM	375	"---------------------------------------------------------\n");
cc367732 IM	376	#define __P(F) \
cc367732 IM	377	SEQ_printf(m, "%-35s:%21Ld\n", #F, (long long)F)
43ae34cb	378	#define P(F) \
2d92f227	379	SEQ_printf(m, "%-35s:%21Ld\n", #F, (long long)p->F)
cc367732 IM	380	#define __PN(F) \
cc367732 IM	381	SEQ_printf(m, "%-35s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)F))
ef83a571	382	#define PN(F) \
2d92f227	383	SEQ_printf(m, "%-35s:%14Ld.%06ld\n", #F, SPLIT_NS((long long)p->F))
43ae34cb	384
ef83a571 IM	385	PN(se.exec_start);
	386	PN(se.vruntime);
	387	PN(se.sum_exec_runtime);
6cfb0d5d	388
cc367732 IM	389	nr_switches = p->nvcsw + p->nivcsw;
cc367732 IM	390
6cfb0d5d	391	#ifdef CONFIG_SCHEDSTATS
41acab88 LDM	392	PN(se.statistics.wait_start);
	393	PN(se.statistics.sleep_start);
	394	PN(se.statistics.block_start);
	395	PN(se.statistics.sleep_max);
	396	PN(se.statistics.block_max);
	397	PN(se.statistics.exec_max);
	398	PN(se.statistics.slice_max);
	399	PN(se.statistics.wait_max);
	400	PN(se.statistics.wait_sum);
	401	P(se.statistics.wait_count);
	402	PN(se.statistics.iowait_sum);
	403	P(se.statistics.iowait_count);
2d72376b	404	P(sched_info.bkl_count);
cc367732	405	P(se.nr_migrations);
41acab88 LDM	406	P(se.statistics.nr_migrations_cold);
	407	P(se.statistics.nr_failed_migrations_affine);
	408	P(se.statistics.nr_failed_migrations_running);
	409	P(se.statistics.nr_failed_migrations_hot);
	410	P(se.statistics.nr_forced_migrations);
	411	P(se.statistics.nr_wakeups);
	412	P(se.statistics.nr_wakeups_sync);
	413	P(se.statistics.nr_wakeups_migrate);
	414	P(se.statistics.nr_wakeups_local);
	415	P(se.statistics.nr_wakeups_remote);
	416	P(se.statistics.nr_wakeups_affine);
	417	P(se.statistics.nr_wakeups_affine_attempts);
	418	P(se.statistics.nr_wakeups_passive);
	419	P(se.statistics.nr_wakeups_idle);
cc367732 IM	420
	421	{
	422	u64 avg_atom, avg_per_cpu;
	423
	424	avg_atom = p->se.sum_exec_runtime;
	425	if (nr_switches)
	426	do_div(avg_atom, nr_switches);
	427	else
	428	avg_atom = -1LL;
	429
	430	avg_per_cpu = p->se.sum_exec_runtime;
c1a89740	431	if (p->se.nr_migrations) {
6f6d6a1a RZ	432	avg_per_cpu = div64_u64(avg_per_cpu,
6f6d6a1a RZ	433	p->se.nr_migrations);
c1a89740	434	} else {
cc367732	435	avg_per_cpu = -1LL;
c1a89740	436	}
cc367732 IM	437
	438	__PN(avg_atom);
	439	__PN(avg_per_cpu);
	440	}
6cfb0d5d	441	#endif
cc367732	442	__P(nr_switches);
2d92f227	443	SEQ_printf(m, "%-35s:%21Ld\n",
cc367732 IM	444	"nr_voluntary_switches", (long long)p->nvcsw);
	445	SEQ_printf(m, "%-35s:%21Ld\n",
	446	"nr_involuntary_switches", (long long)p->nivcsw);
	447
43ae34cb IM	448	P(se.load.weight);
	449	P(policy);
	450	P(prio);
ef83a571	451	#undef PN
cc367732 IM	452	#undef __PN
	453	#undef P
	454	#undef __P
43ae34cb IM	455
43ae34cb IM	456	{
29d7b90c	457	unsigned int this_cpu = raw_smp_processor_id();
43ae34cb IM	458	u64 t0, t1;
43ae34cb IM	459
29d7b90c IM	460	t0 = cpu_clock(this_cpu);
29d7b90c IM	461	t1 = cpu_clock(this_cpu);
2d92f227	462	SEQ_printf(m, "%-35s:%21Ld\n",
43ae34cb IM	463	"clock-delta", (long long)(t1-t0));
	464	}
	465	}
	466
	467	void proc_sched_set_task(struct task_struct *p)
	468	{
6cfb0d5d	469	#ifdef CONFIG_SCHEDSTATS
41acab88	470	memset(&p->se.statistics, 0, sizeof(p->se.statistics));
6cfb0d5d	471	#endif
43ae34cb	472	}