Summary

Obsolete the unused product option GCLockerEdenExpansionPercent.

Problem

The JVM option GCLockerEdenExpansionPercent is unused since removal of the GC Locker in JDK 22.

Solution

Obsolete the option.

Specification

diff --git a/src/hotspot/share/gc/shared/gc_globals.hpp b/src/hotspot/share/gc/shared/gc_globals.hpp
index 25e581cae67..b41bff01e29 100644
--- a/src/hotspot/share/gc/shared/gc_globals.hpp
+++ b/src/hotspot/share/gc/shared/gc_globals.hpp
@@ -168,11 +168,6 @@
           "A System.gc() request invokes a concurrent collection; "         \
           "(effective only when using concurrent collectors)")              \
                                                                             \
-  product(uint, GCLockerEdenExpansionPercent, 5,                            \
-          "How much the GC can expand the eden by while the GC locker "     \
-          "is active (as a percentage)")                                    \
-          range(0, 100)                                                     \
-                                                                            \
   product(uintx, GCLockerRetryAllocationCount, 2, DIAGNOSTIC,               \
           "Number of times to retry allocations when "                      \
           "blocked by the GC locker")                                       \
diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
index 7b593b8c093..8f3b9aa11c7 100644
--- a/src/hotspot/share/runtime/arguments.cpp
+++ b/src/hotspot/share/runtime/arguments.cpp
@@ -527,6 +527,7 @@ static SpecialFlag const special_jvm_flags[] = {
   { "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) },
+  { "GCLockerEdenExpansionPercent", JDK_Version::undefined(), JDK_Version::jdk(23), JDK_Version::jdk(24) },
 #ifdef ASSERT
   { "DummyObsoleteTestFlag",        JDK_Version::undefined(), JDK_Version::jdk(18), JDK_Version::undefined() },
 #endif