diff options
| author | Vlastimil Babka <vbabka@suse.cz> | 2017-07-06 15:40:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-06 16:24:34 -0700 |
| commit | 04ec6264f28793e56114d0a367bb4d3af667ab6a (patch) | |
| tree | b20688e500f325ad1aab00398a56da78bcc8b911 /mm/page_alloc.c | |
| parent | 45816682b2cd6771cf63cb7dc7dbebdd827a0132 (diff) | |
mm, page_alloc: pass preferred nid instead of zonelist to allocator
The main allocator function __alloc_pages_nodemask() takes a zonelist
pointer as one of its parameters. All of its callers directly or
indirectly obtain the zonelist via node_zonelist() using a preferred
node id and gfp_mask. We can make the code a bit simpler by doing the
zonelist lookup in __alloc_pages_nodemask(), passing it a preferred node
id instead (gfp_mask is already another parameter).
There are some code size benefits thanks to removal of inlined
node_zonelist():
bloat-o-meter add/remove: 2/2 grow/shrink: 4/36 up/down: 399/-1351 (-952)
This will also make things simpler if we proceed with converting cpusets
to zonelists.
Link: http://lkml.kernel.org/r/20170517081140.30654-4-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Christoph Lameter <cl@linux.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 019af778ec55..8aa860017d66 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3980,12 +3980,12 @@ got_pg: } static inline bool prepare_alloc_pages(gfp_t gfp_mask, unsigned int order, - struct zonelist *zonelist, nodemask_t *nodemask, + int preferred_nid, nodemask_t *nodemask, struct alloc_context *ac, gfp_t *alloc_mask, unsigned int *alloc_flags) { ac->high_zoneidx = gfp_zone(gfp_mask); - ac->zonelist = zonelist; + ac->zonelist = node_zonelist(preferred_nid, gfp_mask); ac->nodemask = nodemask; ac->migratetype = gfpflags_to_migratetype(gfp_mask); @@ -4030,8 +4030,8 @@ static inline void finalise_ac(gfp_t gfp_mask, * This is the 'heart' of the zoned buddy allocator. */ struct page * -__alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order, - struct zonelist *zonelist, nodemask_t *nodemask) +__alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order, int preferred_nid, + nodemask_t *nodemask) { struct page *page; unsigned int alloc_flags = ALLOC_WMARK_LOW; @@ -4039,7 +4039,7 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order, struct alloc_context ac = { }; gfp_mask &= gfp_allowed_mask; - if (!prepare_alloc_pages(gfp_mask, order, zonelist, nodemask, &ac, &alloc_mask, &alloc_flags)) + if (!prepare_alloc_pages(gfp_mask, order, preferred_nid, nodemask, &ac, &alloc_mask, &alloc_flags)) return NULL; finalise_ac(gfp_mask, order, &ac); |