coccinelle: add coccinelle support

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

coccinelle/run-coccinelle.sh

@@ -0,0 +1,27 @@
+#!/bin/bash -e
+
+top="$(git rev-parse --show-toplevel)"
+files="$(git ls-files ':/*.[ch]')"
+args=
+
+case "$1" in
+        -i)
+                args="$args --in-place"
+                shift
+                ;;
+esac
+
+if ! parallel -h >/dev/null; then
+        echo 'Please install GNU parallel (package "parallel")'
+        exit 1
+fi
+
+for SCRIPT in ${@-$top/coccinelle/*.cocci} ; do
+        echo "--x-- Processing $SCRIPT --x--"
+        TMPFILE=`mktemp`
+        echo "+ spatch --sp-file $SCRIPT $args ..."
+        parallel --halt now,fail=1 --keep-order --noswap --max-args=20 \
+                 spatch --sp-file $SCRIPT $args ::: $files \
+                 2>"$TMPFILE" || cat "$TMPFILE"
+        echo -e "--x-- Processed $SCRIPT --x--\n"
+done