Need a sponsor for push 8147906 into jdk9/hs-rt

[Alexander Harlap]

I need a sponsor to push attached 8147906 -  G1 use of os::processor_count()

Attached change has copyright modification (2015 -> 2016), requested in 
David review.
I re-tested JPRT after copyright modification.

Alex
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# HG changeset patch
# User aharlap
# Date 1454015141 18000
# Node ID b282803294592b640e87fd15508d862c3ceac91d
# Parent  42e1ea096597f7fce184340171de4545bde9e896
8147906: G1 use of os::processor_count()
Summary: Use os::active_processor_count() instead of os::processor_count() in G1
Reviewed-by: dholmes, jmasa

diff -r 42e1ea096597 -r b28280329459 src/share/vm/gc/g1/concurrentMark.cpp
--- a/src/share/vm/gc/g1/concurrentMark.cpp	Thu Jan 28 15:03:33 2016 +0100
+++ b/src/share/vm/gc/g1/concurrentMark.cpp	Thu Jan 28 16:05:41 2016 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -489,11 +489,11 @@
     double overall_cm_overhead =
       (double) MaxGCPauseMillis * marking_overhead /
       (double) GCPauseIntervalMillis;
-    double cpu_ratio = 1.0 / (double) os::processor_count();
+    double cpu_ratio = 1.0 / (double) os::active_processor_count();
     double marking_thread_num = ceil(overall_cm_overhead / cpu_ratio);
     double marking_task_overhead =
       overall_cm_overhead / marking_thread_num *
-                                              (double) os::processor_count();
+                                              (double) os::active_processor_count();
     double sleep_factor =
                        (1.0 - marking_task_overhead) / marking_task_overhead;
 
diff -r 42e1ea096597 -r b28280329459 src/share/vm/gc/g1/dirtyCardQueue.cpp
--- a/src/share/vm/gc/g1/dirtyCardQueue.cpp	Thu Jan 28 15:03:33 2016 +0100
+++ b/src/share/vm/gc/g1/dirtyCardQueue.cpp	Thu Jan 28 16:05:41 2016 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -160,7 +160,7 @@
 
 // Determines how many mutator threads can process the buffers in parallel.
 uint DirtyCardQueueSet::num_par_ids() {
-  return (uint)os::processor_count();
+  return (uint)os::active_processor_count();
 }
 
 void DirtyCardQueueSet::initialize(CardTableEntryClosure* cl,