From afda57bc13410459fc957e93341ade7bebca36e2 Mon Sep 17 00:00:00 2001 From: Pavel Tatashin Date: Fri, 17 Aug 2018 15:49:30 -0700 Subject: [PATCH] mm/sparse: move buffer init/fini to the common place MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Now that both variants of sparse memory use the same buffers to populate memory map, we can move sparse_buffer_init()/sparse_buffer_fini() to the common place. Link: http://lkml.kernel.org/r/20180712203730.8703-4-pasha.tatashin@oracle.com Signed-off-by: Pavel Tatashin Tested-by: Michael Ellerman [powerpc] Tested-by: Oscar Salvador Reviewed-by: Andrew Morton Cc: Pasha Tatashin Cc: Abdul Haleem Cc: Baoquan He Cc: Daniel Jordan Cc: Dan Williams Cc: Dave Hansen Cc: David Rientjes Cc: Greg Kroah-Hartman Cc: Ingo Molnar Cc: Jan Kara Cc: Jérôme Glisse Cc: "Kirill A. Shutemov" Cc: Michal Hocko Cc: Souptick Joarder Cc: Steven Sistare Cc: Vlastimil Babka Cc: Wei Yang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 3 --- mm/sparse-vmemmap.c | 2 -- mm/sparse.c | 14 +++++++------- 3 files changed, 7 insertions(+), 12 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 4ace5d50a892..48040510df05 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2671,9 +2671,6 @@ void sparse_mem_maps_populate_node(struct page **map_map, unsigned long map_count, int nodeid); -unsigned long __init section_map_size(void); -void sparse_buffer_init(unsigned long size, int nid); -void sparse_buffer_fini(void); void *sparse_buffer_alloc(unsigned long size); struct page *sparse_mem_map_populate(unsigned long pnum, int nid, struct vmem_altmap *altmap); diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c index b05c7663c640..cd15f3d252c3 100644 --- a/mm/sparse-vmemmap.c +++ b/mm/sparse-vmemmap.c @@ -270,7 +270,6 @@ void __init sparse_mem_maps_populate_node(struct page **map_map, unsigned long pnum; int nr_consumed_maps = 0; - sparse_buffer_init(section_map_size() * map_count, nodeid); for (pnum = pnum_begin; pnum < pnum_end; pnum++) { if (!present_section_nr(pnum)) continue; @@ -282,5 +281,4 @@ void __init sparse_mem_maps_populate_node(struct page **map_map, pr_err("%s: sparsemem memory map backing failed some memory will not be available\n", __func__); } - sparse_buffer_fini(); } diff --git a/mm/sparse.c b/mm/sparse.c index db4867b62fff..20ca292d8f11 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -401,14 +401,14 @@ static void __init sparse_early_usemaps_alloc_node(void *data, } #ifdef CONFIG_SPARSEMEM_VMEMMAP -unsigned long __init section_map_size(void) +static unsigned long __init section_map_size(void) { return ALIGN(sizeof(struct page) * PAGES_PER_SECTION, PMD_SIZE); } #else -unsigned long __init section_map_size(void) +static unsigned long __init section_map_size(void) { return PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION); } @@ -433,10 +433,8 @@ void __init sparse_mem_maps_populate_node(struct page **map_map, unsigned long map_count, int nodeid) { unsigned long pnum; - unsigned long size = section_map_size(); int nr_consumed_maps = 0; - sparse_buffer_init(size * map_count, nodeid); for (pnum = pnum_begin; pnum < pnum_end; pnum++) { if (!present_section_nr(pnum)) continue; @@ -447,14 +445,13 @@ void __init sparse_mem_maps_populate_node(struct page **map_map, pr_err("%s: sparsemem memory map backing failed some memory will not be available\n", __func__); } - sparse_buffer_fini(); } #endif /* !CONFIG_SPARSEMEM_VMEMMAP */ static void *sparsemap_buf __meminitdata; static void *sparsemap_buf_end __meminitdata; -void __init sparse_buffer_init(unsigned long size, int nid) +static void __init sparse_buffer_init(unsigned long size, int nid) { WARN_ON(sparsemap_buf); /* forgot to call sparse_buffer_fini()? */ sparsemap_buf = @@ -464,7 +461,7 @@ void __init sparse_buffer_init(unsigned long size, int nid) sparsemap_buf_end = sparsemap_buf + size; } -void __init sparse_buffer_fini(void) +static void __init sparse_buffer_fini(void) { unsigned long size = sparsemap_buf_end - sparsemap_buf; @@ -494,8 +491,11 @@ static void __init sparse_early_mem_maps_alloc_node(void *data, unsigned long map_count, int nodeid) { struct page **map_map = (struct page **)data; + + sparse_buffer_init(section_map_size() * map_count, nodeid); sparse_mem_maps_populate_node(map_map, pnum_begin, pnum_end, map_count, nodeid); + sparse_buffer_fini(); } #else static struct page __init *sparse_early_mem_map_alloc(unsigned long pnum) -- 2.30.2