From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 21 Aug 2017 13:42:52 +0000 (+0200)
Subject: sched/topology: Improve comments
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a090c4f2cd2cfeb54eaf8ad1e726a6c485f3abc3;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

sched/topology: Improve comments

Mike provided a better comment for destroy_sched_domain() ...

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>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index 4197f1346153..179b90b60ec6 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -344,8 +344,9 @@ static void free_sched_groups(struct sched_group *sg, int free_sgc)
 static void destroy_sched_domain(struct sched_domain *sd)
 {
 	/*
-	 * A sched domain has many groups' reference, and an overlapping
-	 * domain has private groups, iterate and nuke them all.
+	 * A normal sched domain may have multiple group references, an
+	 * overlapping domain, having private groups, only one.  Iterate,
+	 * dropping group/capacity references, freeing where none remain.
 	 */
 	free_sched_groups(sd->groups, 1);