sched: add more vruntime statistics

add more vruntime statistics.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index 75ccf7a..7a61706 100644 (file)
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -109,7 +109,8 @@ 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;
+       s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
+               spread, rq0_min_vruntime, spread0;
        struct rq *rq = &per_cpu(runqueues, cpu);
        struct sched_entity *last;
        unsigned long flags;
@@ -121,7 +122,6 @@ 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)
@@ -129,14 +129,21 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
        last = __pick_last_entity(cfs_rq);
        if (last)
                max_vruntime = last->vruntime;
+       min_vruntime = rq->cfs.min_vruntime;
+       rq0_min_vruntime = per_cpu(runqueues, 0).cfs.min_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", "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);
+       spread0 = min_vruntime - rq0_min_vruntime;
+       SEQ_printf(m, "  .%-30s: %Ld\n", "spread0",
+                       (long long)spread0);
 
        P(wait_runtime);
        P(wait_runtime_overruns);