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From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: dev@dpdk.org
Cc: techboard@dpdk.org, Bruce Richardson <bruce.richardson@intel.com>,
 Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>,
 Ruifeng Wang <ruifeng.wang@arm.com>, Jerin Jacob <jerinj@marvell.com>,
 Sunil Kumar Kori <skori@marvell.com>,
 =?UTF-8?q?Mattias=20R=C3=B6nnblom?= <mattias.ronnblom@ericsson.com>,
 Joyce Kong <joyce.kong@arm.com>,
 David Christensen <drc@linux.vnet.ibm.com>,
 Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>,
 David Hunt <david.hunt@intel.com>, Thomas Monjalon <thomas@monjalon.net>,
 David Marchand <david.marchand@redhat.com>,
 Tyler Retzlaff <roretzla@linux.microsoft.com>
Subject: [PATCH 6/6] devtools: forbid new direct use of GCC atomic builtins
Date: Thu, 10 Aug 2023 18:32:01 -0700
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Refrain from using compiler __atomic_xxx builtins DPDK now requires
the use of rte_atomic_<op>_explicit macros when operating on DPDK
atomic variables.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: Morten Brørup <mb@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