Summary: Update the HS21 build number to 11
Reviewed-by: jcoomes

Reviewed-by: kvn

Reviewed-by: iveresov, kvn

Summary: Avoid blocking in CompileBroker::compile_method_base() if the current thread holds the pending list lock.
Reviewed-by: never, brutisso, ysr

Summary: In G1 heap verification, we no longer scan perm to G1-collected heap refs as part of process_strong_roots() but rather in a separate explicit oop iteration over the perm gen. This preserves the original perm card-marks. Added a new assertion in younger_refs_iterate() to catch a simple subcase where the user may have forgotten a prior save_marks() call, as happened in the case of G1's attempt to iterate perm to G1 refs when verifying the heap before exit. The assert was deliberately weakened for ParNew+CMS and will be fixed for that combination in a future CR. Also made some (non-G1) cleanups related to code and comments obsoleted by the migration of Symbols to the native heap.
Reviewed-by: iveresov, jmasa, tonyp

Reviewed-by: mduigou

Summary: A predicate should not be moved in partial peel optimization since it will invalidate jvm state of its uncommon trap.
Reviewed-by: never

Summary: Make the NUMA allocator behave properly with SHM and ISM large pages.
Reviewed-by: ysr

Summary: Handle stack overflow before the first frame is called, by printing out the called method and not walking the stack.
Reviewed-by: dholmes, phh, dsamersoff

Reviewed-by: twisti

Reviewed-by: stefank

Summary: Update the HS21 build number to 10
Reviewed-by: jcoomes

Summary: Added counters for jstat
Reviewed-by: tonyp, jwilhelm, stefank, ysr, johnc

Reviewed-by: kvn, never

Summary: Short-circuited an unnecessary double traversal of dirty card windows when iterating younger refs. Also renamed some cardtable methods for more clarity.
Reviewed-by: jmasa, stefank, poonam

Summary: memory slices should be always created for non-static fields after allocation
Reviewed-by: never

Summary: Support transparent huge pages on Linux available since 2.6.38
Reviewed-by: iveresov, ysr
Contributed-by: aph@redhat.com

Summary: The change avoids generating relocation info entry for the staging area patching stub on systems that don't support movw/movt instructions
Reviewed-by: bdelsart

Reviewed-by: kvn, jrose, twisti

Summary: It introduces non-product cmd line parameter G1DummyRegionsPerGC which indicates how many "dummy" regions to allocate at the end of each GC. This allows the G1 heap to grow artificially and makes concurrent marking cycles more frequent irrespective of what the application that is running is doing. The dummy regions will be found totally empty during cleanup so this parameter can also be used to stress the concurrent cleanup operation.
Reviewed-by: brutisso, johnc