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authorLinus Torvalds <torvalds@linux-foundation.org>2018-10-23 13:08:53 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2018-10-23 13:08:53 +0100
commit0200fbdd431519d730b5d399a12840ec832b27cc (patch)
tree2b58f9e24b61b00e0550f106c95bfabc3b52cfdd /tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus
parentde3fbb2aa802a267dee2213ae7d5a1e19eb4294a (diff)
parent01a14bda11add9dcd4a59200f13834d634559935 (diff)
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking and misc x86 updates from Ingo Molnar: "Lots of changes in this cycle - in part because locking/core attracted a number of related x86 low level work which was easier to handle in a single tree: - Linux Kernel Memory Consistency Model updates (Alan Stern, Paul E. McKenney, Andrea Parri) - lockdep scalability improvements and micro-optimizations (Waiman Long) - rwsem improvements (Waiman Long) - spinlock micro-optimization (Matthew Wilcox) - qspinlocks: Provide a liveness guarantee (more fairness) on x86. (Peter Zijlstra) - Add support for relative references in jump tables on arm64, x86 and s390 to optimize jump labels (Ard Biesheuvel, Heiko Carstens) - Be a lot less permissive on weird (kernel address) uaccess faults on x86: BUG() when uaccess helpers fault on kernel addresses (Jann Horn) - macrofy x86 asm statements to un-confuse the GCC inliner. (Nadav Amit) - ... and a handful of other smaller changes as well" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (57 commits) locking/lockdep: Make global debug_locks* variables read-mostly locking/lockdep: Fix debug_locks off performance problem locking/pvqspinlock: Extend node size when pvqspinlock is configured locking/qspinlock_stat: Count instances of nested lock slowpaths locking/qspinlock, x86: Provide liveness guarantee x86/asm: 'Simplify' GEN_*_RMWcc() macros locking/qspinlock: Rework some comments locking/qspinlock: Re-order code locking/lockdep: Remove duplicated 'lock_class_ops' percpu array x86/defconfig: Enable CONFIG_USB_XHCI_HCD=y futex: Replace spin_is_locked() with lockdep locking/lockdep: Make class->ops a percpu counter and move it under CONFIG_DEBUG_LOCKDEP=y x86/jump-labels: Macrofy inline assembly code to work around GCC inlining bugs x86/cpufeature: Macrofy inline assembly code to work around GCC inlining bugs x86/extable: Macrofy inline assembly code to work around GCC inlining bugs x86/paravirt: Work around GCC inlining bugs when compiling paravirt ops x86/bug: Macrofy the BUG table section handling, to work around GCC inlining bugs x86/alternatives: Macrofy lock prefixes to work around GCC inlining bugs x86/refcount: Work around GCC inlining bug x86/objtool: Use asm macros to work around GCC inlining bugs ...
Diffstat (limited to 'tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus')
-rw-r--r--tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus7
1 files changed, 3 insertions, 4 deletions
diff --git a/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus b/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus
index 0f749e419b34..094d58df7789 100644
--- a/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus
+++ b/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus
@@ -1,11 +1,10 @@
C ISA2+pooncelock+pooncelock+pombonce
(*
- * Result: Sometimes
+ * Result: Never
*
- * This test shows that the ordering provided by a lock-protected S
- * litmus test (P0() and P1()) are not visible to external process P2().
- * This is likely to change soon.
+ * This test shows that write-write ordering provided by locks
+ * (in P0() and P1()) is visible to external process P2().
*)
{}

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