2529       return true;
2530     }
2531     // Fall through and try to use small pages
2532   }
2533 
2534   if (commit_memory(addr, size, exec)) {
2535     realign_memory(addr, size, alignment_hint);
2536     return true;
2537   }
2538   return false;
2539 }
2540 
2541 void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
2542   if (UseHugeTLBFS && alignment_hint > (size_t)vm_page_size()) {
2543     // We don't check the return value: madvise(MADV_HUGEPAGE) may not
2544     // be supported or the memory may already be backed by huge pages.
2545     ::madvise(addr, bytes, MADV_HUGEPAGE);
2546   }
2547 }
2548 
2549 void os::free_memory(char *addr, size_t bytes) {
2550   commit_memory(addr, bytes, false);
2551 }
2552 
2553 void os::numa_make_global(char *addr, size_t bytes) {
2554   Linux::numa_interleave_memory(addr, bytes);
2555 }
2556 
2557 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) {
2558   Linux::numa_tonode_memory(addr, bytes, lgrp_hint);
2559 }
2560 
2561 bool os::numa_topology_changed()   { return false; }
2562 
2563 size_t os::numa_get_groups_num() {
2564   int max_node = Linux::numa_max_node();
2565   return max_node > 0 ? max_node + 1 : 1;
2566 }
2567 
2568 int os::numa_get_group_id() {
2569   int cpu_id = Linux::sched_getcpu();
2570   if (cpu_id != -1) {

2529       return true;
2530     }
2531     // Fall through and try to use small pages
2532   }
2533 
2534   if (commit_memory(addr, size, exec)) {
2535     realign_memory(addr, size, alignment_hint);
2536     return true;
2537   }
2538   return false;
2539 }
2540 
2541 void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
2542   if (UseHugeTLBFS && alignment_hint > (size_t)vm_page_size()) {
2543     // We don't check the return value: madvise(MADV_HUGEPAGE) may not
2544     // be supported or the memory may already be backed by huge pages.
2545     ::madvise(addr, bytes, MADV_HUGEPAGE);
2546   }
2547 }
2548 
2549 void os::free_memory(char *addr, size_t bytes, size_t alignment_hint) {
2550   commit_memory(addr, bytes, alignment_hint, false);
2551 }
2552 
2553 void os::numa_make_global(char *addr, size_t bytes) {
2554   Linux::numa_interleave_memory(addr, bytes);
2555 }
2556 
2557 void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) {
2558   Linux::numa_tonode_memory(addr, bytes, lgrp_hint);
2559 }
2560 
2561 bool os::numa_topology_changed()   { return false; }
2562 
2563 size_t os::numa_get_groups_num() {
2564   int max_node = Linux::numa_max_node();
2565   return max_node > 0 ? max_node + 1 : 1;
2566 }
2567 
2568 int os::numa_get_group_id() {
2569   int cpu_id = Linux::sched_getcpu();
2570   if (cpu_id != -1) {