8224666: Parallel GC: Use WorkGang (8: obsolete and remove flags)

Reviewed-by: stefank, kbarrett, tschatzl
openjdk · Aug 16, 2019 · f075a32 · f075a32
1 parent 1447c5c
commit f075a32
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Showing 2 changed files with 2 additions and 13 deletions.
diff --git a/src/hotspot/share/gc/shared/gc_globals.hpp b/src/hotspot/share/gc/shared/gc_globals.hpp
@@ -680,12 +680,6 @@
   product(bool, DisableExplicitGC, false,                                   \
           "Ignore calls to System.gc()")                                    \
                                                                             \
-  product(bool, BindGCTaskThreadsToCPUs, false,                             \
-          "Bind GCTaskThreads to CPUs if possible")                         \
-                                                                            \
-  product(bool, UseGCTaskAffinity, false,                                   \
-          "Use worker affinity when asking for GCTasks")                    \
-                                                                            \
   product(bool, PrintGC, false,                                             \
           "Print message at garbage collection. "                           \
           "Deprecated, use -Xlog:gc instead.")                              \

diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
@@ -553,6 +553,8 @@ static SpecialFlag const special_jvm_flags[] = {
   { "SharedMiscDataSize",            JDK_Version::undefined(), JDK_Version::jdk(10), JDK_Version::undefined() },
   { "SharedMiscCodeSize",            JDK_Version::undefined(), JDK_Version::jdk(10), JDK_Version::undefined() },
   { "FailOverToOldVerifier",         JDK_Version::undefined(), JDK_Version::jdk(14), JDK_Version::jdk(15) },
+  { "BindGCTaskThreadsToCPUs",       JDK_Version::undefined(), JDK_Version::jdk(14), JDK_Version::jdk(16) },
+  { "UseGCTaskAffinity",             JDK_Version::undefined(), JDK_Version::jdk(14), JDK_Version::jdk(16) },
 
 #ifdef TEST_VERIFY_SPECIAL_JVM_FLAGS
   // These entries will generate build errors.  Their purpose is to test the macros.
@@ -1968,13 +1970,6 @@ jint Arguments::set_aggressive_heap_flags() {
     return JNI_EINVAL;
   }
 
-  // Get around early Solaris scheduling bug
-  // (affinity vs other jobs on system)
-  // but disallow DR and offlining (5008695).
-  if (FLAG_SET_CMDLINE(BindGCTaskThreadsToCPUs, true) != JVMFlag::SUCCESS) {
-    return JNI_EINVAL;
-  }
-
   return JNI_OK;
 }