[Xen-devel] [PATCH 6/7] xen: adds vNUMA info debug-key u

[Elena Ufimtseva <ufimtseva@xxxxxxxxx>]

Prints basic information about vNUMA topology
for vNUMA enabled domains when issuing debug-key 'u'.

Signed-off-by: Elena Ufimtseva <ufimtseva@xxxxxxxxx>

---
Changes since RFC v2:
- added check for no node mapping and displays it as -1;
- modified the output on per vnode basis;
---
 xen/arch/x86/numa.c |   20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/numa.c b/xen/arch/x86/numa.c
index b141877..c826b1b 100644
--- a/xen/arch/x86/numa.c
+++ b/xen/arch/x86/numa.c
@@ -347,7 +347,7 @@ EXPORT_SYMBOL(node_data);
 static void dump_numa(unsigned char key)
 {
        s_time_t now = NOW();
-       int i;
+       int i, j;
        struct domain *d;
        struct page_info *page;
        unsigned int page_num_node[MAX_NUMNODES];
@@ -389,6 +389,24 @@ static void dump_numa(unsigned char key)
 
                for_each_online_node(i)
                        printk("    Node %u: %u\n", i, page_num_node[i]);
+
+                if (d->vnuma.nr_vnodes > 0) 
+                {
+                    printk("    Domain has %d vnodes\n", d->vnuma.nr_vnodes);
+                    for(j = 0; j < d->vnuma.nr_vnodes; j++) {
+                        printk("        vnode %d - pnode %d:", j,
+                                        d->vnuma.vnode_to_pnode[j] > 
MAX_NUMNODES ?
+                                        -1 : d->vnuma.vnode_to_pnode[j]); 
+                        printk(" %Lu MB, \n", (unsigned long long) 
+                                           (d->vnuma.vnuma_memblks[j].end -
+                                           d->vnuma.vnuma_memblks[j].start) 
+                                           >> 20);
+                        }
+                    printk("    Domain vcpu to vnode: ");
+                    for(j = 0; j < d->max_vcpus; j++) 
+                        printk("%d ", d->vnuma.vcpu_to_vnode[j]);
+                    printk("\n");
+                }
        }
 
        rcu_read_unlock(&domlist_read_lock);
-- 
1.7.10.4


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