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mm: access zone->node via zone_to_nid() and zone_set_nid()

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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/[email protected]
Signed-off-by: Pavel Tatashin <[email protected]>
Signed-off-by: Oscar Salvador <[email protected]>
Reviewed-by: Oscar Salvador <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: Aaron Lu <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Pasha Tatashin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Pavel Tatashin 2018-08-21 21:53:32 -07:00 • committed by Linus Torvalds
commit c1093b746c
5 changed files with 28 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

4
mm/mempolicy.c
View file

@ -1784,7 +1784,7 @@ unsigned int mempolicy_slab_node(void)
zonelist = &NODE_DATA(node)->node_zonelists[ZONELIST_FALLBACK];
z = first_zones_zonelist(zonelist, highest_zoneidx,
&policy->v.nodes);
return z->zone ? z->zone->node : node;
return z->zone ? zone_to_nid(z->zone) : node;
}
default:
@ -2326,7 +2326,7 @@ int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long
node_zonelist(numa_node_id(), GFP_HIGHUSER),
gfp_zone(GFP_HIGHUSER),
&pol->v.nodes);
polnid = z->zone->node;
polnid = zone_to_nid(z->zone);
break;
default:

9
mm/mm_init.c
View file

@ -53,13 +53,8 @@ void __init mminit_verify_zonelist(void)
zone->name);
/* Iterate the zonelist */
for_each_zone_zonelist(zone, z, zonelist, zoneid) {
#ifdef CONFIG_NUMA
pr_cont("%d:%s ", zone->node, zone->name);
#else
pr_cont("0:%s ", zone->name);
#endif /* CONFIG_NUMA */
}
for_each_zone_zonelist(zone, z, zonelist, zoneid)
pr_cont("%d:%s ", zone_to_nid(zone), zone->name);
pr_cont("\n");
}
}

10
mm/page_alloc.c
View file

@ -2909,10 +2909,10 @@ static inline void zone_statistics(struct zone *preferred_zone, struct zone *z)
if (!static_branch_likely(&vm_numa_stat_key))
return;
if (z->node != numa_node_id())
if (zone_to_nid(z) != numa_node_id())
local_stat = NUMA_OTHER;
if (z->node == preferred_zone->node)
if (zone_to_nid(z) == zone_to_nid(preferred_zone))
__inc_numa_state(z, NUMA_HIT);
else {
__inc_numa_state(z, NUMA_MISS);
@ -5278,7 +5278,7 @@ int local_memory_node(int node)
z = first_zones_zonelist(node_zonelist(node, GFP_KERNEL),
gfp_zone(GFP_KERNEL),
NULL);
return z->zone->node;
return zone_to_nid(z->zone);
}
#endif
@ -6299,9 +6299,7 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat)
* And all highmem pages will be managed by the buddy system.
*/
zone->managed_pages = freesize;
#ifdef CONFIG_NUMA
zone->node = nid;
#endif
zone_set_nid(zone, nid);
zone->name = zone_names[j];
zone->zone_pgdat = pgdat;
spin_lock_init(&zone->lock);