[PATCH v4 01/30] cocci/rte_memcpy: add script to eliminate fixed size rte_memcpy

[Stephen Hemminger]

Rte_memcpy should not be used for the simple case of copying
a fix size structure because it is slower and will hide problems
from code analysis tools. Coverity, fortify and other analyzers
special case memcpy().

Gcc (and Clang) are smart enough to inline copies which
will be faster.

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 devtools/cocci/rte_memcpy.cocci | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 devtools/cocci/rte_memcpy.cocci

diff --git a/devtools/cocci/rte_memcpy.cocci b/devtools/cocci/rte_memcpy.cocci
new file mode 100644
index 0000000000..fa1038fc06
--- /dev/null
+++ b/devtools/cocci/rte_memcpy.cocci
@@ -0,0 +1,11 @@
+//
+// rte_memcpy should not be used for simple fixed size structure
+// because compiler's are smart enough to inline these.
+//
+@@
+expression src, dst; constant size;
+@@
+(
+- rte_memcpy(dst, src, size)
++ memcpy(dst, src, size)
+)
-- 
2.43.0