sched/debug: Add 'rq_debug' proc entry

1 files changed, 45 insertions, 2 deletions

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 1ca0130ed4f9..0dcf9355941f 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -623,21 +623,37 @@ void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
 void print_dl_rq(struct seq_file *m, int cpu, struct dl_rq *dl_rq)
 {
 	struct dl_bw *dl_bw;
+#ifdef CONFIG_SMP
+	struct rq *rq = container_of(dl_rq, struct rq, dl);
+#endif
 
 	SEQ_printf(m, "\ndl_rq[%d]:\n", cpu);
 
 #define PU(x) \
 	SEQ_printf(m, "  .%-30s: %lu\n", #x, (unsigned long)(dl_rq->x))
 
+#ifdef CONFIG_SMP
+	SEQ_printf(m, "  .%-30s: %s\n", "online", rq->online ? "yes":"no");
+#endif
 	PU(dl_nr_running);
+	PU(running_bw);
+	PU(this_bw);
+
+#ifdef CONFIG_SMP
+	SEQ_printf(m, "  .%-30s: %*pbl (%s)\n",
+		   "rd->span", cpumask_pr_args(rq->rd->span),
+		   rq->rd == &def_root_domain ? "default" : "normal");
+#endif
+
 #ifdef CONFIG_SMP
 	PU(dl_nr_migratory);
 	dl_bw = &cpu_rq(cpu)->rd->dl_bw;
+	SEQ_printf(m, "  .%-30s: %lld\n", "rd->dl_bw->bw",
+				dl_bw->bw * cpumask_weight(rq->rd->span));
 #else
 	dl_bw = &dl_rq->dl_bw;
 #endif
-	SEQ_printf(m, "  .%-30s: %lld\n", "dl_bw->bw", dl_bw->bw);
-	SEQ_printf(m, "  .%-30s: %lld\n", "dl_bw->total_bw", dl_bw->total_bw);
+	SEQ_printf(m, "  .%-30s: %lld\n", "rd->dl_bw->total_bw", dl_bw->total_bw);
 
 #undef PU
 }
@@ -864,6 +880,28 @@ static const struct file_operations sched_debug_fops = {
 	.release	= sched_debug_release,
 };
 
+static int rq_debug_show(struct seq_file *seq, void *v)
+{
+	int cpu;
+
+	for_each_possible_cpu(cpu)
+		print_dl_stats(seq, cpu);
+
+	return 0;
+}
+
+static int rq_debug_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, rq_debug_show, NULL);
+}
+
+static const struct file_operations rq_debug_fops = {
+	.open		= rq_debug_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static int __init init_sched_debug_procfs(void)
 {
 	struct proc_dir_entry *pe;
@@ -871,6 +909,11 @@ static int __init init_sched_debug_procfs(void)
 	pe = proc_create("sched_debug", 0444, NULL, &sched_debug_fops);
 	if (!pe)
 		return -ENOMEM;
+
+	pe = proc_create("rq_debug", 0444, NULL, &rq_debug_fops);
+	if (!pe)
+		return -ENOMEM;
+
 	return 0;
 }