X-Git-Url: http://git.samba.org/samba.git/?p=sfrench%2Fcifs-2.6.git;a=blobdiff_plain;f=arch%2FKconfig;h=1aafb4efbb51dfea8c5639f2bd68379c930825d4;hp=596f0e66e69f61797829da46b1e846ceffcc8642;hb=44ccba3f7b230af1bd7ebe173cbf5803df1df486;hpb=ad05e6ca7b5fcf15ff178da662035ec7718f938c

diff --git a/arch/Kconfig b/arch/Kconfig
index 596f0e66e69f..1aafb4efbb51 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -940,6 +940,18 @@ config STRICT_MODULE_RWX
 config ARCH_WANT_RELAX_ORDER
 	bool
 
+config ARCH_HAS_REFCOUNT
+	bool
+	help
+	  An architecture selects this when it has implemented refcount_t
+	  using open coded assembly primitives that provide an optimized
+	  refcount_t implementation, possibly at the expense of some full
+	  refcount state checks of CONFIG_REFCOUNT_FULL=y.
+
+	  The refcount overflow check behavior, however, must be retained.
+	  Catching overflows is the primary security concern for protecting
+	  against bugs in reference counts.
+
 config REFCOUNT_FULL
 	bool "Perform full reference count validation at the expense of speed"
 	help