[PATCH 2/2] mm/sparse: add common helper to mark all memblocks present
From: logang@deltatee.com (Logan Gunthorpe)
Date: 2018-11-07 17:39:08
Also in:
linux-arch, linux-mm, linux-riscv, linux-sh, lkml
Subsystem:
memory management, memory management - core, memory management - mglru (multi-gen lru), the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Presently the arches arm64, arm and sh have a function which loops through each memblock and calls memory present. riscv will require a similar function. Introduce a common memblocks_present() function that can be used by all the arches. Subsequent patches will cleanup the arches that make use of this. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Vlastimil Babka <redacted> Cc: Oscar Salvador <osalvador@suse.de> --- include/linux/mmzone.h | 6 ++++++ mm/sparse.c | 11 +++++++++++ 2 files changed, 17 insertions(+)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 847705a6d0ec..db023a92f3a4 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h@@ -783,6 +783,12 @@ void memory_present(int nid, unsigned long start, unsigned long end); static inline void memory_present(int nid, unsigned long start, unsigned long end) {} #endif +#if defined(CONFIG_SPARSEMEM) +void memblocks_present(void); +#else +static inline void memblocks_present(void) {} +#endif + #ifdef CONFIG_HAVE_MEMORYLESS_NODES int local_memory_node(int node_id); #else
diff --git a/mm/sparse.c b/mm/sparse.c
index 33307fc05c4d..5841e4ad6d93 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c@@ -239,6 +239,17 @@ void __init memory_present(int nid, unsigned long start, unsigned long end) } } +void __init memblocks_present(void) +{ + struct memblock_region *reg; + + for_each_memblock(memory, reg) { + memory_present(memblock_get_region_node(reg), + memblock_region_memory_base_pfn(reg), + memblock_region_memory_end_pfn(reg)); + } +} + /* * Subtle, we encode the real pfn into the mem_map such that * the identity pfn - section_mem_map will return the actual
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2.19.0