[dpdk-dev] [PATCH] doc: add note into coding style

[Marko Kovacevic <marko.kovacevic@intel.com>]

Added a note into the coding style to
highlight the use of a bool within a struct

Signed-off-by: Marko Kovacevic <marko.kovacevic@intel.com>
---
 doc/guides/contributing/coding_style.rst | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/doc/guides/contributing/coding_style.rst b/doc/guides/contributing/coding_style.rst
index b1bf0d1..8b1febe 100644
--- a/doc/guides/contributing/coding_style.rst
+++ b/doc/guides/contributing/coding_style.rst
@@ -247,6 +247,15 @@ Structure Declarations
 * Use of the structures should be by separate variable declarations and those declarations must be extern if they are declared in a header file.
 * Externally visible structure definitions should have the structure name prefixed by ``rte_`` to avoid namespace collisions.
 
+.. note::
+
+    Uses of ``bool`` in structures are not preferred as is wastes space and
+    it's also not clear as to what type size the bool is. A preferred use of
+    ``bool`` is mainly as a return type from functions that return true/false,
+    and maybe local variable functions.
+
+    Ref: `LKML <https://lkml.org/lkml/2017/11/21/384>`_
+
 Queues
 ~~~~~~
 
-- 
2.9.5