X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=init%2FKconfig;h=8fa4f758821a694b09b2ddb42ee94c69a90345a7;hb=81f250e1cf8048e4780e46d5219b0e7f943a336b;hp=2d9b83104dcf715197f1a84d34b892783ff79fe2;hpb=596fa9e6efddd5297fe577b345e0710404608e06;p=firefly-linux-kernel-4.4.55.git

diff --git a/init/Kconfig b/init/Kconfig
index 2d9b83104dcf..8fa4f758821a 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1365,6 +1365,14 @@ config FUTEX
 	  support for "fast userspace mutexes".  The resulting kernel may not
 	  run glibc-based applications correctly.
 
+config HAVE_FUTEX_CMPXCHG
+	bool
+	depends on FUTEX
+	help
+	  Architectures should select this if futex_atomic_cmpxchg_inatomic()
+	  is implemented and always working. This removes a couple of runtime
+	  checks.
+
 config EPOLL
 	bool "Enable eventpoll support" if EXPERT
 	default y