[1/2] arch/sh: Remove code that handles memory-hotplug and memory-hotremove

Commit Message

Oscar Salvador May 18, 2024, 11:58 a.m. UTC

Since commit 7ec58a2b941ed889("mm/memory_hotplug: restrict
CONFIG_MEMORY_HOTPLUG to 64 bit"), we only support memory-hotplug on
64bits platforms, but currently superH can only run on 32bit, so
remove the code that handles memory-hotplug and memory-hotremove as
that cannot work.

Signed-off-by: Oscar Salvador <[e-mail]>
---
 arch/sh/mm/init.c | 28 ----------------------------
 1 file changed, 28 deletions(-)

Patch

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index bf1b54055316..d1fe90b2f5ff 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -395,31 +395,3 @@  void __init mem_init(void)
 
 	mem_init_done = 1;
 }
-
-#ifdef CONFIG_MEMORY_HOTPLUG
-int arch_add_memory(int nid, u64 start, u64 size,
-		    struct mhp_params *params)
-{
-	unsigned long start_pfn = PFN_DOWN(start);
-	unsigned long nr_pages = size >> PAGE_SHIFT;
-	int ret;
-
-	if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot))
-		return -EINVAL;
-
-	/* We only have ZONE_NORMAL, so this is easy.. */
-	ret = __add_pages(nid, start_pfn, nr_pages, params);
-	if (unlikely(ret))
-		printk("%s: Failed, __add_pages() == %d\n", __func__, ret);
-
-	return ret;
-}
-
-void arch_remove_memory(u64 start, u64 size, struct vmem_altmap *altmap)
-{
-	unsigned long start_pfn = PFN_DOWN(start);
-	unsigned long nr_pages = size >> PAGE_SHIFT;
-
-	__remove_pages(start_pfn, nr_pages, altmap);
-}
-#endif /* CONFIG_MEMORY_HOTPLUG */