Hi Christoph,
> Changelog
> * Simple NUMA compatible allocation of hugepages in the nearest node
>
> Index: linux-2.6.9/mm/hugetlb.c
> ===================================================================
> --- linux-2.6.9.orig/mm/hugetlb.c 2004-10-22 13:28:27.000000000 -0700
> +++ linux-2.6.9/mm/hugetlb.c 2004-10-25 16:56:22.000000000 -0700
> @@ -32,14 +32,17 @@
> {
> int nid = numa_node_id();
> struct page *page = NULL;
> -
> - if (list_empty(&hugepage_freelists[nid])) {
> - for (nid = 0; nid < MAX_NUMNODES; ++nid)
> - if (!list_empty(&hugepage_freelists[nid]))
> - break;
> + struct zonelist *zonelist = NODE_DATA(nid)->node_zonelists;
I think the previous line should be replaced with
struct zonelist *zonelist = NODE_DATA(nid)->node_zonelists + __GFP_HIGHMEM;
because NODE_DATA(nid)->node_zonelists means a zonelist for __GFP_DMA zones.
__GFP_HIGHMEM would be suitable for hugetlbpages.
> + struct zone **zones = zonelist->zones;
> + struct zone *z;
> + int i;
> +
> + for(i=0; (z = zones[i])!= NULL; i++) {
> + nid = z->zone_pgdat->node_id;
> + if (!list_empty(&hugepage_freelists[nid]))
> + break;
> }
> - if (nid >= 0 && nid < MAX_NUMNODES &&
> - !list_empty(&hugepage_freelists[nid])) {
> + if (z) {
> page = list_entry(hugepage_freelists[nid].next,
> struct page, lru);
> list_del(&page->lru);
>
> -
Thanks,
Hirokazu Takahashi.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
