hash: add lock-free r/w concurrency

[dpdk.git] / doc / guides / rel_notes / release_18_11.rst

diff --git a/doc/guides/rel_notes/release_18_11.rst b/doc/guides/rel_notes/release_18_11.rst
index 771295df2c040dbc8197b37792fbae074ba59116..b35484055f9e692d247c4727ed8e6c1fcbbfe111 100644 (file)
--- a/doc/guides/rel_notes/release_18_11.rst
+++ b/doc/guides/rel_notes/release_18_11.rst
@@ -190,6 +190,12 @@ New Features
   collisions.  In addition, the internal hashing algorithm was changed to use
   partial-key hashing to improve memory efficiency and lookup performance.
 
+* **Added lock free reader/writer concurrency to hash library (rte_hash).**
+
+  Lock free reader/writer concurrency prevents the readers from getting
+  blocked due to a pre-empted writer thread. This allows the hash library
+  to be used in scenarios where the writer thread runs on control plane.
+
 * **Added Traffic Pattern Aware Power Control Library**
 
   Added an experimental library. This extend Power Library and provide