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mm/sparse: use the new sparse buffer functions in non-vmemmap

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non-vmemmap sparse also allocated large contiguous chunk of memory, and if
fails falls back to smaller allocations.  Use the same functions to
allocate buffer as the vmemmap-sparse

Link: http://lkml.kernel.org/r/20180712203730.8703-3-pasha.tatashin@oracle.com
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>	[powerpc]
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Tested-by: Oscar Salvador <osalvador@suse.de>
Cc: Pasha Tatashin <Pavel.Tatashin@microsoft.com>
Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Steven Sistare <steven.sistare@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Pavel Tatashin 2018-08-17 15:49:26 -07:00 committed by Linus Torvalds
parent 35fd1eb1e8
commit e131c06b14
1 changed files with 14 additions and 27 deletions
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41
mm/sparse.c
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@ -408,13 +408,20 @@ unsigned long __init section_map_size(void)
}
#else
unsigned long __init section_map_size(void)
{
return PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION);
}
struct page __init *sparse_mem_map_populate(unsigned long pnum, int nid,
struct vmem_altmap *altmap)
{
struct page *map;
unsigned long size;
unsigned long size = section_map_size();
struct page *map = sparse_buffer_alloc(size);
if (map)
return map;
size = PAGE_ALIGN(sizeof(struct page) * PAGES_PER_SECTION);
map = memblock_virt_alloc_try_nid(size,
PAGE_SIZE, __pa(MAX_DMA_ADDRESS),
BOOTMEM_ALLOC_ACCESSIBLE, nid);
@ -425,42 +432,22 @@ void __init sparse_mem_maps_populate_node(struct page **map_map,
unsigned long pnum_end,
unsigned long map_count, int nodeid)
{
void *map;
unsigned long pnum;
unsigned long size = sizeof(struct page) * PAGES_PER_SECTION;
int nr_consumed_maps;
unsigned long size = section_map_size();
int nr_consumed_maps = 0;
size = PAGE_ALIGN(size);
map = memblock_virt_alloc_try_nid_raw(size * map_count,
PAGE_SIZE, __pa(MAX_DMA_ADDRESS),
BOOTMEM_ALLOC_ACCESSIBLE, nodeid);
if (map) {
nr_consumed_maps = 0;
for (pnum = pnum_begin; pnum < pnum_end; pnum++) {
if (!present_section_nr(pnum))
continue;
map_map[nr_consumed_maps] = map;
map += size;
nr_consumed_maps++;
}
return;
}
/* fallback */
nr_consumed_maps = 0;
sparse_buffer_init(size * map_count, nodeid);
for (pnum = pnum_begin; pnum < pnum_end; pnum++) {
struct mem_section *ms;
if (!present_section_nr(pnum))
continue;
map_map[nr_consumed_maps] =
sparse_mem_map_populate(pnum, nodeid, NULL);
if (map_map[nr_consumed_maps++])
continue;
ms = __nr_to_section(pnum);
pr_err("%s: sparsemem memory map backing failed some memory will not be available\n",
__func__);
}
sparse_buffer_fini();
}
#endif /* !CONFIG_SPARSEMEM_VMEMMAP */