Commit a420b063 authored Apr 14, 2017 by Peter Zijlstra Committed by Ingo Molnar May 15, 2017

sched/topology: Verify the first group matches the child domain



We want sched_groups to be sibling child domains (or individual CPUs
when there are no child domains). Furthermore, since the first group
of a domain should include the CPU of that domain, the first group of
each domain should match the child domain.

Verify this is indeed so.

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>

parent b0151c25

kernel/sched/topology.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -93,6 +93,12 @@ static int sched_domain_debug_one(struct sched_domain *sd, int cpu, int level,
		group->sgc->capacity);
		}

		if (group == sd->groups && sd->child &&
		!cpumask_equal(sched_domain_span(sd->child),
		sched_group_cpus(group))) {
		printk(KERN_ERR "ERROR: domain->groups does not match domain->child\n");
		}

		group = group->next;

		if (group != sd->groups)