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authorRicardo B. Marliere <ricardo@marliere.net>2024-02-04 10:56:44 -0300
committerAndrew Morton <akpm@linux-foundation.org>2024-02-22 10:24:54 -0800
commite374ae2be2f7cb4aad46e17e3fa5da7bbb0d2a09 (patch)
treea528ae0b7c7e36ecd60632c78e19c86de1f1626b /mm
parent98141718528526ef080a9bb78a40f79aca0774a7 (diff)
memory tier: make memory_tier_subsys const
Now that the driver core can properly handle constant struct bus_type, move the memory_tier_subsys variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Link: https://lkml.kernel.org/r/20240204-bus_cleanup-mm-v1-1-00f49286f164@marliere.net Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory-tiers.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c
index 5462d9e3c84c..ed20f96bf89d 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",
};