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author | Pavel Tatashin <pasha.tatashin@oracle.com> | 2018-08-18 00:49:26 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-18 01:20:32 +0200 |
commit | e131c06b14b8601e2b1dbc7ec9cc6418c293a067 (patch) | |
tree | e396cccbb1fdb005f54f89b40e4c3f06e5f4aa9f /mm/sparse.c | |
parent | mm/sparse: abstract sparse buffer allocations (diff) | |
download | linux-e131c06b14b8601e2b1dbc7ec9cc6418c293a067.tar.xz linux-e131c06b14b8601e2b1dbc7ec9cc6418c293a067.zip |
mm/sparse: use the new sparse buffer functions in non-vmemmap
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>
Diffstat (limited to '')
-rw-r--r-- | mm/sparse.c | 41 |
1 files changed, 14 insertions, 27 deletions
diff --git a/mm/sparse.c b/mm/sparse.c index 9a0a5f598469..db4867b62fff 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -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; - - 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; - } + unsigned long size = section_map_size(); + int nr_consumed_maps = 0; - /* 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 */ |