[PATCH 2/2] devtools: forbid use of builtin helpers for bit count

[David Marchand]

Now that DPDK provides some bit count operations, flag it to avoid
reintroducing __builtin_*.

Signed-off-by: David Marchand <david.march...@redhat.com>
---
 devtools/checkpatches.sh | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/devtools/checkpatches.sh b/devtools/checkpatches.sh
index 43f5e36a18..55fabc5458 100755
--- a/devtools/checkpatches.sh
+++ b/devtools/checkpatches.sh
@@ -127,6 +127,14 @@ check_forbidden_additions() { # <patch>
                -f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
                "$1" || res=1
 
+       # forbid use of non abstracted bit count operations
+       awk -v FOLDERS="lib drivers app examples" \
+               -v 
EXPRESSIONS='\\<__builtin_(clz|clzll|ctz|ctzll|popcount|popcountll)\\>' \
+               -v RET_ON_FAIL=1 \
+               -v MESSAGE='Using __builtin helpers for bit count operations' \
+               -f $(dirname $(readlink -f $0))/check-forbidden-tokens.awk \
+               "$1" || res=1
+
        # forbid use of experimental build flag except in examples
        awk -v FOLDERS='lib drivers app' \
                -v EXPRESSIONS='-DALLOW_EXPERIMENTAL_API 
allow_experimental_apis' \
-- 
2.41.0