--- a/src/hotspot/os/linux/os_linux.cpp Wed Nov 13 13:43:06 2019 -0500
+++ b/src/hotspot/os/linux/os_linux.cpp Wed Nov 13 10:49:12 2019 -0800
@@ -3007,6 +3007,23 @@
return 0;
}
+int os::numa_get_group_id_for_address(const void* address) {
+#ifndef MPOL_F_NODE
+#define MPOL_F_NODE (1<<0) // Return next IL mode instead of node mask
+#endif
+
+#ifndef MPOL_F_ADDR
+#define MPOL_F_ADDR (1<<1) // Look up VMA using address
+#endif
+
+ int id = 0;
+
+ if (syscall(SYS_get_mempolicy, &id, NULL, 0, const_cast<void*>(address), MPOL_F_NODE | MPOL_F_ADDR) == -1) {
+ return -1;
+ }
+ return id;
+}
+
int os::Linux::get_existing_num_nodes() {
int node;
int highest_node_number = Linux::numa_max_node();