[Xen-devel] [PATCH v4 7/7] 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>
---
 xen/arch/x86/numa.c |   30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/numa.c b/xen/arch/x86/numa.c
index b141877..2adc462 100644
--- a/xen/arch/x86/numa.c
+++ b/xen/arch/x86/numa.c
@@ -347,9 +347,10 @@ EXPORT_SYMBOL(node_data);
 static void dump_numa(unsigned char key)
 {
        s_time_t now = NOW();
-       int i;
+       int i, j, n;
        struct domain *d;
        struct page_info *page;
+        char tmp[6];
        unsigned int page_num_node[MAX_NUMNODES];
 
        printk("'%c' pressed -> dumping numa info (now-0x%X:%08X)\n", key,
@@ -389,6 +390,33 @@ 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 (i = 0; i < d->vnuma.nr_vnodes; i++) {
+                               n = 0;
+                               snprintf(tmp, 5, "%d", 
d->vnuma.vnode_to_pnode[i]);
+                               printk("        vnode %d - pnode %s", i,
+                                               d->vnuma.vnode_to_pnode[i] >= 
MAX_NUMNODES ? "any" : tmp);
+                               printk(" %"PRIu64" MB, ",
+                                               (d->vnuma.vmemrange[i].end - 
d->vnuma.vmemrange[i].start) >> 20);
+                               printk("vcpus: ");
+                               for (j = 0; j < d->max_vcpus; j++) {
+                                       if (d->vnuma.vcpu_to_vnode[j] == i) {
+                                               if (!((n + 1) % 8))
+                                                       printk("%d\n", j);
+                                               else {
+                                                       if ( !(n % 8) && n != 0 
)
+                                                               printk("%s%d ", 
"             ", j);
+                                                       else
+                                                               printk("%d ", 
j);
+                                               }
+                                               n++;
+                                       }
+                               }
+                               printk("\n");
+                       }
+               }
        }
 
        rcu_read_unlock(&domlist_read_lock);
-- 
1.7.10.4


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