1 files changed, 0 insertions, 68 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index fbd452e12397..69d4251ee079 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -444,71 +444,6 @@ void __init bootmem_init(void)
 	memblock_dump_all();
 }
 
-#ifndef CONFIG_SPARSEMEM_VMEMMAP
-static inline void free_memmap(unsigned long start_pfn, unsigned long end_pfn)
-{
-	struct page *start_pg, *end_pg;
-	unsigned long pg, pgend;
-
-	/*
-	 * Convert start_pfn/end_pfn to a struct page pointer.
-	 */
-	start_pg = pfn_to_page(start_pfn - 1) + 1;
-	end_pg = pfn_to_page(end_pfn - 1) + 1;
-
-	/*
-	 * Convert to physical addresses, and round start upwards and end
-	 * downwards.
-	 */
-	pg = (unsigned long)PAGE_ALIGN(__pa(start_pg));
-	pgend = (unsigned long)__pa(end_pg) & PAGE_MASK;
-
-	/*
-	 * If there are free pages between these, free the section of the
-	 * memmap array.
-	 */
-	if (pg < pgend)
-		memblock_free(pg, pgend - pg);
-}
-
-/*
- * The mem_map array can get very big. Free the unused area of the memory map.
- */
-static void __init free_unused_memmap(void)
-{
-	unsigned long start, end, prev_end = 0;
-	int i;
-
-	for_each_mem_pfn_range(i, MAX_NUMNODES, &start, &end, NULL) {
-#ifdef CONFIG_SPARSEMEM
-		/*
-		 * Take care not to free memmap entries that don't exist due
-		 * to SPARSEMEM sections which aren't present.
-		 */
-		start = min(start, ALIGN(prev_end, PAGES_PER_SECTION));
-#endif
-		/*
-		 * If we had a previous bank, and there is a space between the
-		 * current bank and the previous, free it.
-		 */
-		if (prev_end && prev_end < start)
-			free_memmap(prev_end, start);
-
-		/*
-		 * Align up here since the VM subsystem insists that the
-		 * memmap entries are valid from the bank end aligned to
-		 * MAX_ORDER_NR_PAGES.
-		 */
-		prev_end = ALIGN(end, MAX_ORDER_NR_PAGES);
-	}
-
-#ifdef CONFIG_SPARSEMEM
-	if (!IS_ALIGNED(prev_end, PAGES_PER_SECTION))
-		free_memmap(prev_end, ALIGN(prev_end, PAGES_PER_SECTION));
-#endif
-}
-#endif	/* !CONFIG_SPARSEMEM_VMEMMAP */
-
 /*
  * mem_init() marks the free areas in the mem_map and tells us how much memory
  * is free.  This is done after various parts of the system have claimed their
@@ -524,9 +459,6 @@ void __init mem_init(void)
 
 	set_max_mapnr(max_pfn - PHYS_PFN_OFFSET);
 
-#ifndef CONFIG_SPARSEMEM_VMEMMAP
-	free_unused_memmap();
-#endif
 	/* this will put all unused low memory onto the freelists */
 	memblock_free_all();