commit b0151c25548cacc50771a7930475727c6c8ee869
author Peter Zijlstra <peterz@infradead.org> Fri Apr 14 17:29:16 2017 +0200
committer Ingo Molnar <mingo@kernel.org> Mon May 15 10:15:25 2017 +0200
tree 588eb063d33eb13dd325fea2dfe33a6a579bb041
parent 91eaed0d61319f58a9f8e43d41a8cbb069b4f73d

sched/debug: Print the scheduler topology group mask

In order to determine the balance_cpu (for should_we_balance()) we need
the sched_group_mask() for overlapping domains.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

kernel/sched/topology.c

diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index 6b10e0a..3d50ee3 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -82,12 +82,22 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
 
 		printk(KERN_CONT " %*pbl",
 		       cpumask_pr_args(sched_group_cpus(group)));
+
+		if ((sd->flags & SD_OVERLAP) && !cpumask_full(sched_group_mask(group))) {
+			printk(KERN_CONT " (mask: %*pbl)",
+				cpumask_pr_args(sched_group_mask(group)));
+		}
+
 		if (group->sgc->capacity != SCHED_CAPACITY_SCALE) {
-			printk(KERN_CONT " (cpu_capacity = %lu)",
+			printk(KERN_CONT " (cpu_capacity: %lu)",
 				group->sgc->capacity);
 		}
 
 		group = group->next;
+
+		if (group != sd->groups)
+			printk(KERN_CONT ",");
+
 	} while (group != sd->groups);
 	printk(KERN_CONT "\n");