[PATCH v2 07/15] mm/bootmem_info: remove handling for !CONFIG_SPARSEMEM_VMEMMAP

[David Hildenbrand (Arm)]

It is not immediately obvious that CONFIG_HAVE_BOOTMEM_INFO_NODE is
only selected from CONFIG_MEMORY_HOTREMOVE, which itself depends on
CONFIG_MEMORY_HOTPLUG that ... depends on CONFIG_SPARSEMEM_VMEMMAP.

Let's remove the !CONFIG_SPARSEMEM_VMEMMAP leftovers that are dead code.

Reviewed-by: Lorenzo Stoakes (Oracle) <ljs at kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt at kernel.org>
Signed-off-by: David Hildenbrand (Arm) <david at kernel.org>
---
 mm/bootmem_info.c | 37 -------------------------------------
 1 file changed, 37 deletions(-)

diff --git a/mm/bootmem_info.c b/mm/bootmem_info.c
index b0e2a9fa641f..e61e08e24924 100644
--- a/mm/bootmem_info.c
+++ b/mm/bootmem_info.c
@@ -40,42 +40,6 @@ void put_page_bootmem(struct page *page)
 	}
 }
 
-#ifndef CONFIG_SPARSEMEM_VMEMMAP
-static void __init register_page_bootmem_info_section(unsigned long start_pfn)
-{
-	unsigned long mapsize, section_nr, i;
-	struct mem_section *ms;
-	struct page *page, *memmap;
-	struct mem_section_usage *usage;
-
-	section_nr = pfn_to_section_nr(start_pfn);
-	ms = __nr_to_section(section_nr);
-
-	/* Get section's memmap address */
-	memmap = sparse_decode_mem_map(ms->section_mem_map, section_nr);
-
-	/*
-	 * Get page for the memmap's phys address
-	 * XXX: need more consideration for sparse_vmemmap...
-	 */
-	page = virt_to_page(memmap);
-	mapsize = sizeof(struct page) * PAGES_PER_SECTION;
-	mapsize = PAGE_ALIGN(mapsize) >> PAGE_SHIFT;
-
-	/* remember memmap's page */
-	for (i = 0; i < mapsize; i++, page++)
-		get_page_bootmem(section_nr, page, SECTION_INFO);
-
-	usage = ms->usage;
-	page = virt_to_page(usage);
-
-	mapsize = PAGE_ALIGN(mem_section_usage_size()) >> PAGE_SHIFT;
-
-	for (i = 0; i < mapsize; i++, page++)
-		get_page_bootmem(section_nr, page, MIX_SECTION_INFO);
-
-}
-#else /* CONFIG_SPARSEMEM_VMEMMAP */
 static void __init register_page_bootmem_info_section(unsigned long start_pfn)
 {
 	unsigned long mapsize, section_nr, i;
@@ -100,7 +64,6 @@ static void __init register_page_bootmem_info_section(unsigned long start_pfn)
 	for (i = 0; i < mapsize; i++, page++)
 		get_page_bootmem(section_nr, page, MIX_SECTION_INFO);
 }
-#endif /* !CONFIG_SPARSEMEM_VMEMMAP */
 
 void __init register_page_bootmem_info_node(struct pglist_data *pgdat)
 {

-- 
2.43.0