[PATCH v2 01/28] alpha: introduce arch_zone_limits_init()
From: Mike Rapoport <rppt@kernel.org>
Date: 2026-01-02 07:00:38
Also in:
linux-alpha, linux-cxl, linux-doc, linux-m68k, linux-mips, linux-mm, linux-riscv, linux-s390, linux-sh, linux-um, lkml, loongarch, sparclinux
Subsystem:
alpha port, memory management - core, the rest · Maintainers:
Richard Henderson, Matt Turner, Magnus Lindholm, Andrew Morton, David Hildenbrand, Linus Torvalds
From: "Mike Rapoport (Microsoft)" <rppt@kernel.org> Move calculations of zone limits to a dedicated arch_zone_limits_init() function. Later MM core will use this function as an architecture specific callback during nodes and zones initialization and thus there won't be a need to call free_area_init() from every architecture. Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: Magnus Lindholm <linmag7@gmail.com> --- arch/alpha/mm/init.c | 15 ++++++++++----- include/linux/mm.h | 1 + 2 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c
index 4c5ab9cd8a0a..cd0cb1abde5f 100644
--- a/arch/alpha/mm/init.c
+++ b/arch/alpha/mm/init.c@@ -208,12 +208,8 @@ callback_init(void * kernel_end) return kernel_end; } -/* - * paging_init() sets up the memory map. - */ -void __init paging_init(void) +void __init arch_zone_limits_init(unsigned long *max_zone_pfn) { - unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; unsigned long dma_pfn; dma_pfn = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
@@ -221,8 +217,17 @@ void __init paging_init(void) max_zone_pfn[ZONE_DMA] = dma_pfn; max_zone_pfn[ZONE_NORMAL] = max_pfn; +} + +/* + * paging_init() sets up the memory map. + */ +void __init paging_init(void) +{ + unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; /* Initialize mem_map[]. */ + arch_zone_limits_init(max_zone_pfn); free_area_init(max_zone_pfn); /* Initialize the kernel's ZERO_PGE. */
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 15076261d0c2..628c0e0ac313 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -3552,6 +3552,7 @@ static inline unsigned long get_num_physpages(void) * free_area_init(max_zone_pfns); */ void free_area_init(unsigned long *max_zone_pfn); +void arch_zone_limits_init(unsigned long *max_zone_pfn); unsigned long node_map_pfn_alignment(void); extern unsigned long absent_pages_in_range(unsigned long start_pfn, unsigned long end_pfn);
--
2.51.0