[PATCH 05/14] sched/topology,debug: Print the group mask

From: Peter Zijlstra
Date: Fri Apr 28 2017 - 09:35:05 EST


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@xxxxxxxxxxxxx>
---
kernel/sched/topology.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)

--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -82,12 +82,22 @@ static int sched_domain_debug_one(struct

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");