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: Jia He <redacted>
---
 arch/arm/Kconfig   | 4 ++++
 arch/arm64/Kconfig | 4 ++++
 mm/Kconfig         | 3 +++
 3 files changed, 11 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 843edfd..7ea2636 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig

@@ -1642,6 +1642,10 @@ config ARCH_SELECT_MEMORY_MODEL
 config HAVE_ARCH_PFN_VALID
        def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM

+config HAVE_MEMBLOCK_PFN_VALID
+       def_bool y
+       depends on HAVE_ARCH_PFN_VALID
+
 config HAVE_GENERIC_GUP
        def_bool y
        depends on ARM_LPAE

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 42c090c..26d75f4 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig

@@ -778,6 +778,10 @@ config ARCH_SELECT_MEMORY_MODEL
 config HAVE_ARCH_PFN_VALID
        def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM

+config HAVE_MEMBLOCK_PFN_VALID
+       def_bool y
+       depends on HAVE_ARCH_PFN_VALID
+
 config HW_PERF_EVENTS
        def_bool y
        depends on ARM_PMU

diff --git a/mm/Kconfig b/mm/Kconfig
index ce95491..2c38080a5 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig

@@ -137,6 +137,9 @@ config HAVE_MEMBLOCK_NODE_MAP
 config HAVE_MEMBLOCK_PHYS_MAP
        bool

+config HAVE_MEMBLOCK_PFN_VALID
+       bool
+
 config HAVE_GENERIC_GUP
        bool

--

1.8.3.1