Adding upstream version 6.9.7.upstream/6.9.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 24 insertions, 2 deletions

diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c
index 5462d9e3c8..0537664620 100644
--- a/mm/memory-tiers.c
+++ b/mm/memory-tiers.c
@@ -39,7 +39,7 @@ static LIST_HEAD(memory_tiers);
 static struct node_memory_type_map node_memory_types[MAX_NUMNODES];
 struct memory_dev_type *default_dram_type;
 
-static struct bus_type memory_tier_subsys = {
+static const struct bus_type memory_tier_subsys = {
 	.name = "memory_tiering",
 	.dev_name = "memory_tier",
 };
@@ -359,6 +359,26 @@ static void disable_all_demotion_targets(void)
 	synchronize_rcu();
 }
 
+static void dump_demotion_targets(void)
+{
+	int node;
+
+	for_each_node_state(node, N_MEMORY) {
+		struct memory_tier *memtier = __node_get_memory_tier(node);
+		nodemask_t preferred = node_demotion[node].preferred;
+
+		if (!memtier)
+			continue;
+
+		if (nodes_empty(preferred))
+			pr_info("Demotion targets for Node %d: null\n", node);
+		else
+			pr_info("Demotion targets for Node %d: preferred: %*pbl, fallback: %*pbl\n",
+				node, nodemask_pr_args(&preferred),
+				nodemask_pr_args(&memtier->lower_tier_mask));
+	}
+}
+
 /*
  * Find an automatic demotion target for all memory
  * nodes. Failing here is OK.  It might just indicate
@@ -443,7 +463,7 @@ static void establish_demotion_targets(void)
 	 * Now build the lower_tier mask for each node collecting node mask from
 	 * all memory tier below it. This allows us to fallback demotion page
 	 * allocation to a set of nodes that is closer the above selected
-	 * perferred node.
+	 * preferred node.
 	 */
 	lower_tier = node_states[N_MEMORY];
 	list_for_each_entry(memtier, &memory_tiers, list) {
@@ -456,6 +476,8 @@ static void establish_demotion_targets(void)
 		nodes_andnot(lower_tier, lower_tier, tier_nodes);
 		memtier->lower_tier_mask = lower_tier;
 	}
+
+	dump_demotion_targets();
 }
 
 #else