diff options
| author | Pavel Tatashin <pasha.tatashin@oracle.com> | 2018-08-21 21:53:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-22 10:52:45 -0700 |
| commit | c1093b746c0576ed81c4d568d1e39cab651d37e6 (patch) | |
| tree | 2ca164c09a94f73e7770f2ca59432cc12d1a6c3e /include/linux/mmzone.h | |
| parent | ace1db39768cdc58f6b157d99ae5958ad34ffff8 (diff) | |
mm: access zone->node via zone_to_nid() and zone_set_nid()
zone->node is configured only when CONFIG_NUMA=y, so it is a good idea to
have inline functions to access this field in order to avoid ifdef's in c
files.
Link: http://lkml.kernel.org/r/20180730101757.28058-3-osalvador@techadventures.net
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Aaron Lu <aaron.lu@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Pasha Tatashin <Pavel.Tatashin@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mmzone.h')
| -rw-r--r-- | include/linux/mmzone.h | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 3d4577a3ae7e..1e22d96734e0 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -834,6 +834,25 @@ static inline bool populated_zone(struct zone *zone) return zone->present_pages; } +#ifdef CONFIG_NUMA +static inline int zone_to_nid(struct zone *zone) +{ + return zone->node; +} + +static inline void zone_set_nid(struct zone *zone, int nid) +{ + zone->node = nid; +} +#else +static inline int zone_to_nid(struct zone *zone) +{ + return 0; +} + +static inline void zone_set_nid(struct zone *zone, int nid) {} +#endif + extern int movable_zone; #ifdef CONFIG_HIGHMEM @@ -949,12 +968,7 @@ static inline int zonelist_zone_idx(struct zoneref *zoneref) static inline int zonelist_node_idx(struct zoneref *zoneref) { -#ifdef CONFIG_NUMA - /* zone_to_nid not available in this context */ - return zoneref->zone->node; -#else - return 0; -#endif /* CONFIG_NUMA */ + return zone_to_nid(zoneref->zone); } struct zoneref *__next_zones_zonelist(struct zoneref *z, |