arm: arm64: introduce CONFIG_HAVE_MEMBLOCK_PFN_VALID

hulk inclusion
category: performance
bugzilla: 11028
CVE: NA

-------------------------------------------------

Make CONFIG_HAVE_MEMBLOCK_PFN_VALID a new config option so it can move
memblock_next_valid_pfn to generic code file. All the latter optimizations
are based on this config.

The memblock initialization time on arm/arm64 can benefit from this.
Signed-off-by: NJia He <jia.he@hxt-semitech.com>
Reviewed-by: NPavel Tatashin <pasha.tatashin@oracle.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Nzhong jiang <zhongjiang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

arch/arm/Kconfig

@@ -1636,6 +1636,7 @@ config ARCH_SELECT_MEMORY_MODEL
 
 config HAVE_ARCH_PFN_VALID
 	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
+	select HAVE_MEMBLOCK_PFN_VALID
 
 config HAVE_GENERIC_GUP
 	def_bool y

arch/arm64/Kconfig

@@ -830,6 +830,7 @@ config ARCH_FLATMEM_ENABLE
 
 config HAVE_ARCH_PFN_VALID
 	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
+	select HAVE_MEMBLOCK_PFN_VALID
 
 config HW_PERF_EVENTS
 	def_bool y

mm/Kconfig

@@ -136,6 +136,9 @@ config HAVE_MEMBLOCK_NODE_MAP
 config HAVE_MEMBLOCK_PHYS_MAP
 	bool
 
+config HAVE_MEMBLOCK_PFN_VALID
+	bool
+
 config HAVE_GENERIC_GUP
 	bool