On Mon, Jul 15, 2013 at 11:20 PM, Mel Gorman <mgor...@suse.de> wrote:
> /*
> * Got a PROT_NONE fault for a page on @node.
> */
> -void task_numa_fault(int node, int pages, bool migrated)
> +void task_numa_fault(int last_nid, int node, int pages, bool migrated)
For what is the new parameter?
> {
> struct task_struct *p = current;
> + int priv;
>
> if (!sched_feat_numa(NUMA))
> return;
>
> + /* For now, do not attempt to detect private/shared accesses */
> + priv = 1;
> +
> /* Allocate buffer to track faults on a per-node basis */
> if (unlikely(!p->numa_faults)) {
> - int size = sizeof(*p->numa_faults) * nr_node_ids;
> + int size = sizeof(*p->numa_faults) * 2 * nr_node_ids;
>
> /* numa_faults and numa_faults_buffer share the allocation */
> p->numa_faults = kzalloc(size * 2, GFP_KERNEL);
> @@ -900,7 +915,7 @@ void task_numa_fault(int node, int pages, bool migrated)
> return;
>
> BUG_ON(p->numa_faults_buffer);
> - p->numa_faults_buffer = p->numa_faults + nr_node_ids;
> + p->numa_faults_buffer = p->numa_faults + (2 * nr_node_ids);
> }
>
> /*
> @@ -914,7 +929,7 @@ void task_numa_fault(int node, int pages, bool migrated)
> task_numa_placement(p);
>
> /* Record the fault, double the weight if pages were migrated */
> - p->numa_faults_buffer[node] += pages << migrated;
> + p->numa_faults_buffer[task_faults_idx(node, priv)] += pages <<
> migrated;
> }
>
--
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