The patch titled
Subject: memory tier: make memory_tier_subsys const
has been added to the -mm mm-unstable branch. Its filename is
memory-tier-make-memory_tier_subsys-const.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/memory-tier-make-memory_tier_subsys-const.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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From: "Ricardo B. Marliere" <ricardo@xxxxxxxxxxxx>
Subject: memory tier: make memory_tier_subsys const
Date: Sun, 04 Feb 2024 10:56:44 -0300
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@xxxxxxxxxxxx
Signed-off-by: Ricardo B. Marliere <ricardo@xxxxxxxxxxxx>
Suggested-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-tiers.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memory-tiers.c~memory-tier-make-memory_tier_subsys-const
+++ a/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",
};
_
Patches currently in -mm which might be from ricardo@xxxxxxxxxxxx are
memory-tier-make-memory_tier_subsys-const.patch
const_structscheckpatch-add-bus_type.patch
