8325221: Obsolete TLABStats

Reviewed-by: tschatzl, kbarrett

Author: albertnetymk

src/hotspot/share/gc/shared/tlab_globals.hpp

@@ -46,9 +46,6 @@
   product(bool, ZeroTLAB, false,                                            \
           "Zero out the newly created TLAB")                                \
                                                                             \
-  product(bool, TLABStats, true,                                            \
-          "Provide more detailed and expensive TLAB statistics.")           \
-                                                                            \
   product(size_t, MinTLABSize, 2*K,                                         \
           "Minimum allowed TLAB size (in bytes)")                           \
           range(1, max_uintx/2)                                             \

src/hotspot/share/jvmci/jvmciCompilerToVMInit.cpp

@@ -310,7 +310,6 @@ JVMCIObjectArray CompilerToVM::initialize_intrinsics(JVMCI_TRAPS) {
   do_bool_flag(RestrictContended)                                          \
   do_intx_flag(StackReservedPages)                                         \
   do_intx_flag(StackShadowPages)                                           \
-  do_bool_flag(TLABStats)                                                  \
   do_uintx_flag(TLABWasteIncrement)                                        \
   do_intx_flag(TypeProfileWidth)                                           \
   do_bool_flag(UseAESIntrinsics)                                           \

src/hotspot/share/runtime/arguments.cpp

@@ -504,7 +504,6 @@ static SpecialFlag const special_jvm_flags[] = {
 
   // --- Deprecated alias flags (see also aliased_jvm_flags) - sorted by obsolete_in then expired_in:
   { "CreateMinidumpOnCrash",        JDK_Version::jdk(9),  JDK_Version::undefined(), JDK_Version::undefined() },
-  { "TLABStats",                    JDK_Version::jdk(12), JDK_Version::undefined(), JDK_Version::undefined() },
 
   // -------------- Obsolete Flags - sorted by expired_in --------------
 
@@ -526,6 +525,7 @@ static SpecialFlag const special_jvm_flags[] = {
   { "MinRAMFraction",               JDK_Version::jdk(10),  JDK_Version::jdk(23), JDK_Version::jdk(24) },
   { "InitialRAMFraction",           JDK_Version::jdk(10),  JDK_Version::jdk(23), JDK_Version::jdk(24) },
   { "DefaultMaxRAMFraction",        JDK_Version::jdk(8),  JDK_Version::jdk(23), JDK_Version::jdk(24) },
+  { "TLABStats",                    JDK_Version::jdk(12), JDK_Version::jdk(23), JDK_Version::jdk(24) },
 #ifdef ASSERT
   { "DummyObsoleteTestFlag",        JDK_Version::undefined(), JDK_Version::jdk(18), JDK_Version::undefined() },
 #endif

test/hotspot/jtreg/runtime/CommandLine/VMDeprecatedOptions.java

@@ -56,7 +56,6 @@ public class VMDeprecatedOptions {
         ArrayList<String[]> deprecated = new ArrayList(
           Arrays.asList(new String[][] {
             // deprecated non-alias flags:
-            {"TLABStats",                 "false"},
             {"AllowRedefinitionToAddDeleteMethods", "true"},
 
             // deprecated alias flags (see also aliased_jvm_flags):