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diff --git a/negative-set b/negative-set
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+#!/bin/bash
+#
+# SPDX-License-Identifier: GPL-2.0
+# (c) 2020,2022, Mathieu Poirier <mathieu.poirier@linaro.org>
+#
+# Finds all the commits within the commit range(s) that have not been pack
+# ported to a stable kernel tree.
+#
+# USAGE:
+# $ negative-set <postive.set> <outputfilename.out> <commit range> <commit range> ...
+#
+# INPUT:
+# $1: Output file from the command "positive-set"
+# $2: Name of the ouput file
+# $3: A valid kernel commit range, i.e v5.0..v5.2 or bcf876870b95..65550098c1c4
+#
+
+if [ $# -lt 3 ]; then
+	echo "Script needs at least two arguments"
+	exit 1
+fi
+
+# Make a backup of the output file if it already exists
+if [ -e "$2" ]; then
+	mv $2 $2.bkp
+fi
+
+# Needed by grep command in get-mainline-delta
+touch $2
+
+declare -i count=1
+
+for arg in "$@"; do
+	# Skip over the stable and filename argument
+	if [ $count -lt 3 ]; then
+		count+=1
+		continue
+	fi
+	echo processing $arg
+	git log --no-merges --no-renames --format="%H" $arg | parallel --link get-mainline-feature :::: - ::: $1 ::: $2
+done
+
+exit
+
+