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>
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@ -39,7 +39,7 @@ static LIST_HEAD(memory_tiers);
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static struct node_memory_type_map node_memory_types[MAX_NUMNODES];
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struct memory_dev_type *default_dram_type;
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static struct bus_type memory_tier_subsys = {
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static const struct bus_type memory_tier_subsys = {
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.name = "memory_tiering",
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.dev_name = "memory_tier",
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};
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