8355792: Remove expired flags in JDK 26

Reviewed-by: coleenp, kvn

Author: David Holmes

src/hotspot/share/runtime/arguments.cpp

@@ -528,9 +528,6 @@ static SpecialFlag const special_jvm_flags[] = {
   { "DynamicDumpSharedSpaces",      JDK_Version::jdk(18), JDK_Version::jdk(19), JDK_Version::undefined() },
   { "RequireSharedSpaces",          JDK_Version::jdk(18), JDK_Version::jdk(19), JDK_Version::undefined() },
   { "UseSharedSpaces",              JDK_Version::jdk(18), JDK_Version::jdk(19), JDK_Version::undefined() },
-#ifdef LINUX
-  { "UseLinuxPosixThreadCPUClocks", JDK_Version::jdk(24), JDK_Version::jdk(25), JDK_Version::jdk(26) },
-#endif
   { "LockingMode",                  JDK_Version::jdk(24), JDK_Version::jdk(26), JDK_Version::jdk(27) },
 #ifdef _LP64
   { "UseCompressedClassPointers",   JDK_Version::jdk(25),  JDK_Version::jdk(26), JDK_Version::undefined() },
@@ -540,7 +537,6 @@ static SpecialFlag const special_jvm_flags[] = {
 
   // -------------- Obsolete Flags - sorted by expired_in --------------
 
-  { "PerfDataSamplingInterval",     JDK_Version::undefined(), JDK_Version::jdk(25), JDK_Version::jdk(26) },
 #ifdef LINUX
   { "UseOprofile",                  JDK_Version::jdk(25), JDK_Version::jdk(26), JDK_Version::jdk(27) },
 #endif

src/java.base/share/man/java.md

@@ -2917,71 +2917,12 @@ when they're used.
 
 ## Removed Java Options
 
-These `java` options have been removed in JDK @@VERSION_SPECIFICATION@@ and using them results in an error of:
-
->   `Unrecognized VM option` *option-name*
-
-`-XX:RTMAbortRatio=`*abort\_ratio*
-:   Specifies the RTM abort ratio is specified as a percentage (%) of all
-    executed RTM transactions. If a number of aborted transactions becomes
-    greater than this ratio, then the compiled code is deoptimized. This ratio
-    is used when the `-XX:+UseRTMDeopt` option is enabled. The default value of
-    this option is 50. This means that the compiled code is deoptimized if 50%
-    of all transactions are aborted.
-
-`-XX:RTMRetryCount=`*number\_of\_retries*
-:   Specifies the number of times that the RTM locking code is retried, when it
-    is aborted or busy, before falling back to the normal locking mechanism.
-    The default value for this option is 5. The `-XX:UseRTMLocking` option must
-    be enabled.
-
-`-XX:+UseRTMDeopt`
-:   Autotunes RTM locking depending on the abort ratio. This ratio is specified
-    by the `-XX:RTMAbortRatio` option. If the number of aborted transactions
-    exceeds the abort ratio, then the method containing the lock is deoptimized
-    and recompiled with all locks as normal locks. This option is disabled by
-    default. The `-XX:+UseRTMLocking` option must be enabled.
-
-`-XX:+UseRTMLocking`
-:   Generates Restricted Transactional Memory (RTM) locking code for all
-    inflated locks, with the normal locking mechanism as the fallback handler.
-    This option is disabled by default. Options related to RTM are available
-    only on x86 CPUs that support Transactional Synchronization Extensions (TSX).
-
-    RTM is part of Intel's TSX, which is an x86 instruction set extension and
-    facilitates the creation of multithreaded applications. RTM introduces the
-    new instructions `XBEGIN`, `XABORT`, `XEND`, and `XTEST`. The `XBEGIN` and
-    `XEND` instructions enclose a set of instructions to run as a transaction.
-    If no conflict is found when running the transaction, then the memory and
-    register modifications are committed together at the `XEND` instruction.
-    The `XABORT` instruction can be used to explicitly abort a transaction and
-    the `XTEST` instruction checks if a set of instructions is being run in a
-    transaction.
-
-    A lock on a transaction is inflated when another thread tries to access the
-    same transaction, thereby blocking the thread that didn't originally
-    request access to the transaction. RTM requires that a fallback set of
-    operations be specified in case a transaction aborts or fails. An RTM lock
-    is a lock that has been delegated to the TSX's system.
-
-    RTM improves performance for highly contended locks with low conflict in a
-    critical region (which is code that must not be accessed by more than one
-    thread concurrently). RTM also improves the performance of coarse-grain
-    locking, which typically doesn't perform well in multithreaded
-    applications. (Coarse-grain locking is the strategy of holding locks for
-    long periods to minimize the overhead of taking and releasing locks, while
-    fine-grained locking is the strategy of trying to achieve maximum
-    parallelism by locking only when necessary and unlocking as soon as
-    possible.) Also, for lightly contended locks that are used by different
-    threads, RTM can reduce false cache line sharing, also known as cache line
-    ping-pong. This occurs when multiple threads from different processors are
-    accessing different resources, but the resources share the same cache line.
-    As a result, the processors repeatedly invalidate the cache lines of other
-    processors, which forces them to read from main memory instead of their
-    cache.
+No documented java options have been removed in JDK @@VERSION_SPECIFICATION@@.
 
 For the lists and descriptions of options removed in previous releases see the *Removed Java Options* section in:
 
+-   [The `java` Command, Release 25](https://docs.oracle.com/en/java/javase/25/docs/specs/man/java.html)
+
 -   [The `java` Command, Release 24](https://docs.oracle.com/en/java/javase/24/docs/specs/man/java.html)
 
 -   [The `java` Command, Release 23](https://docs.oracle.com/en/java/javase/23/docs/specs/man/java.html)