[PATCH v6 04/13] mm/vmemmap: Allow architectures to override how vmemmap optimization works
From: Aneesh Kumar K.V <hidden>
Date: 2023-07-24 19:10:10
Also in:
linux-mm
Subsystem:
memory management, memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Architectures like powerpc will like to use different page table allocators and mapping mechanisms to implement vmemmap optimization. Similar to vmemmap_populate allow architectures to implement vmemap_populate_compound_pages Signed-off-by: Aneesh Kumar K.V <redacted> --- mm/sparse-vmemmap.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index a044a130405b..a2cbe44c48e1 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c@@ -358,6 +358,7 @@ int __meminit vmemmap_populate_hugepages(unsigned long start, unsigned long end, return 0; } +#ifndef vmemmap_populate_compound_pages /* * For compound pages bigger than section size (e.g. x86 1G compound * pages with 2M subsection size) fill the rest of sections as tail
@@ -446,6 +447,8 @@ static int __meminit vmemmap_populate_compound_pages(unsigned long start_pfn, return 0; } +#endif + struct page * __meminit __populate_section_memmap(unsigned long pfn, unsigned long nr_pages, int nid, struct vmem_altmap *altmap, struct dev_pagemap *pgmap)
--
2.41.0