[PATCH v4 2/4] devtools: forbid use of GCC atomic builtins

[Tyler Retzlaff]

Refrain from using compiler __atomic_xxx builtins DPDK now uses standard
C11 atomics atomic_xxx.

Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
Acked-by: Morten Brørup <mb at smartsharesystems.com>
---
 devtools/checkpatches.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/devtools/checkpatches.sh b/devtools/checkpatches.sh
index 43f5e36..a32f02e 100755
--- a/devtools/checkpatches.sh
+++ b/devtools/checkpatches.sh
@@ -102,6 +102,14 @@ check_forbidden_additions() { # <patch>
 		-f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
 		"$1" || res=1
 
+	# refrain from using compiler __atomic_xxx builtins
+	awk -v FOLDERS="lib drivers app examples" \
+		-v EXPRESSIONS="__atomic_.*\\\(" \
+		-v RET_ON_FAIL=1 \
+		-v MESSAGE='Using __atomic_xxx builtins' \
+		-f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
+		"$1" || res=1
+
 	# refrain from using compiler __atomic_thread_fence()
 	# It should be avoided on x86 for SMP case.
 	awk -v FOLDERS="lib drivers app examples" \
-- 
1.8.3.1