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sched: add se->vruntime debugging

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debug se->vruntime fields.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Mike Galbraith <efault@gmx.de>
This commit is contained in:
Ingo Molnar 2007-10-15 17:00:05 +02:00
parent aeb73b0403
commit 67e12eac32
1 changed files with 27 additions and 3 deletions
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30
kernel/sched_debug.c
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@ -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