From: Chen Yu <yu.c.chen@intel.com>
Currently, only the domain with SD_SHARE_PKG_RESOURCES flag
would share 1 sd_share for every CPU in this domain. Remove this
restriction and extend it for other sched domains under NUMA
domain.
This shared field will be used by a later patch which optimizes
newidle balancing.
Suggested-by: "Gautham R. Shenoy" <gautham.shenoy@amd.com>
Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
---
kernel/sched/topology.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index c49aea8c1025..815474823b3f 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -1680,10 +1680,10 @@ sd_init(struct sched_domain_topology_level *tl,
}
/*
- * For all levels sharing cache; connect a sched_domain_shared
+ * For all levels except for NUMA; connect a sched_domain_shared
* instance.
*/
- if (sd->flags & SD_SHARE_LLC) {
+ if (!(sd->flags & SD_NUMA)) {
sd->shared = *per_cpu_ptr(sdd->sds, sd_id);
atomic_inc(&sd->shared->ref);
atomic_set(&sd->shared->nr_busy_cpus, sd_weight);
--
2.43.0