memblock tests: add new pageblock related macro

Add new pageblock_start_pfn() and pageblock_align() macro which are needed
by memblock tests.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Kefeng Wang <[e-mail]>
Cc: David Hildenbrand <[e-mail]>
Cc: Mike Rapoport <[e-mail]>
Cc: Oscar Salvador <[e-mail]>
Cc: Vlastimil Babka <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

tools/testing/memblock/linux/mmzone.h

···
 
 #define pageblock_order		(MAX_ORDER - 1)
 #define pageblock_nr_pages	BIT(pageblock_order)
+#define pageblock_align(pfn)	ALIGN((pfn), pageblock_nr_pages)
+#define pageblock_start_pfn(pfn)	ALIGN_DOWN((pfn), pageblock_nr_pages)
 
 struct zone {
 	atomic_long_t		managed_pages;