LoongArch: Document that byte and short atomics are implemented with LL/SC

[urcu.git] / include / urcu / uatomic / loongarch.h

diff --git a/include/urcu/uatomic/loongarch.h b/include/urcu/uatomic/loongarch.h
index f41302a274920dd2534756727880ddf0905f3821..dcf9e935fd44f229819b2128d25944aa26363491 100644 (file)
--- a/include/urcu/uatomic/loongarch.h
+++ b/include/urcu/uatomic/loongarch.h
@@ -32,6 +32,11 @@
 extern "C" {
 #endif
 
+/*
+ * LoongArch implements byte and short atomics with LL/SC instructions,
+ * which retry if the cache line is modified concurrently between LL and
+ * SC.
+ */
 #define UATOMIC_HAS_ATOMIC_BYTE
 #define UATOMIC_HAS_ATOMIC_SHORT