From: Mathieu Poirier <[email protected]> The comment above function partition_sched_domains() clearly state that the cpu_hotplug_lock should be held but doesn't mandate one to abide to it.
Add an explicit check backing that comment, so to make it impossible for anyone to miss the requirement. Suggested-by: Juri Lelli <[email protected]> Signed-off-by: Mathieu Poirier <[email protected]> [modified changelog] Signed-off-by: Juri Lelli <[email protected]> --- kernel/sched/topology.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 61a1125c1ae4..96eee22fafe8 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1858,6 +1858,7 @@ void partition_sched_domains(int ndoms_new, cpumask_var_t doms_new[], int i, j, n; int new_topology; + lockdep_assert_cpus_held(); mutex_lock(&sched_domains_mutex); /* Always unregister in case we don't destroy any domains: */ -- 2.14.3
