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authorPeter Zijlstra <peterz@infradead.org>2017-08-21 15:42:52 +0200
committerIngo Molnar <mingo@kernel.org>2017-08-25 11:12:19 +0200
commita090c4f2cd2cfeb54eaf8ad1e726a6c485f3abc3 (patch)
treebf53680ac0601a1abc107a9591989c1ee634038a /kernel/sched
parent213c5a459ae0a7ef0a092f576aae2d5db6819360 (diff)
downloadlinux-a090c4f2cd2cfeb54eaf8ad1e726a6c485f3abc3.tar.bz2
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>
Diffstat (limited to 'kernel/sched')
-rw-r--r--kernel/sched/topology.c5
1 files changed, 3 insertions, 2 deletions
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);