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Commit 67e12eac authored by Ingo Molnar's avatar Ingo Molnar
Browse files

sched: add se->vruntime debugging 



debug se->vruntime fields.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarMike Galbraith <efault@gmx.de>
parent aeb73b04

kernel/sched_debug.c

+27 −3
Original line number Diff line number Diff line
@@ -44,7 +44,8 @@ print_task(struct seq_file *m, struct rq *rq, struct task_struct *p) 
		(long long)(p->nvcsw + p->nivcsw),

		p->prio);

#ifdef CONFIG_SCHEDSTATS

	SEQ_printf(m, "%15Ld %15Ld %15Ld %15Ld %15Ld\n",

	SEQ_printf(m, "%15Ld %15Ld %15Ld %15Ld %15Ld %15Ld\n",

		(long long)p->se.vruntime,

		(long long)p->se.sum_exec_runtime,

		(long long)p->se.sum_wait_runtime,

		(long long)p->se.sum_sleep_runtime,
@@ -64,10 +65,10 @@ static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu) 
	"\nrunnable tasks:\n"

	"            task   PID        tree-key         delta       waiting"

	"  switches  prio"

	"        sum-exec        sum-wait       sum-sleep"

	"    exec-runtime        sum-exec        sum-wait       sum-sleep"

	"    wait-overrun   wait-underrun\n"

	"------------------------------------------------------------------"

	"----------------"

	"--------------------------------"

	"------------------------------------------------"

	"--------------------------------\n");
@@ -108,6 +109,11 @@ print_cfs_rq_runtime_sum(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq) 


void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)

{

	s64 MIN_vruntime = -1, max_vruntime = -1, spread;

	struct rq *rq = &per_cpu(runqueues, cpu);

	struct sched_entity *last;

	unsigned long flags;



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



#define P(x) \
@@ -115,6 +121,23 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq) 


	P(fair_clock);

	P(exec_clock);

	P(min_vruntime);



	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;

	spin_unlock_irqrestore(&rq->lock, flags);

	SEQ_printf(m, "  .%-30s: %Ld\n", "MIN_vruntime",

			(long long)MIN_vruntime);

	SEQ_printf(m, "  .%-30s: %Ld\n", "max_vruntime",

			(long long)max_vruntime);

	spread = max_vruntime - MIN_vruntime;

	SEQ_printf(m, "  .%-30s: %Ld\n", "spread",

			(long long)spread);



	P(wait_runtime);

	P(wait_runtime_overruns);

	P(wait_runtime_underruns);
@@ -243,6 +266,7 @@ void proc_sched_show_task(struct task_struct *p, struct seq_file *m) 
	P(se.wait_start_fair);

	P(se.exec_start);

	P(se.sleep_start_fair);

	P(se.vruntime);

	P(se.sum_exec_runtime);



#ifdef CONFIG_SCHEDSTATS