Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/memory-model/scripts/runlitmushist.sh b/tools/memory-model/scripts/runlitmushist.sh
new file mode 100755
index 0000000..6ed376f
--- /dev/null
+++ b/tools/memory-model/scripts/runlitmushist.sh
@@ -0,0 +1,87 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Runs the C-language litmus tests specified on standard input, using up
+# to the specified number of CPUs (defaulting to all of them) and placing
+# the results in the specified directory (defaulting to the same place
+# the litmus test came from).
+#
+# sh runlitmushist.sh
+#
+# Run from the Linux kernel tools/memory-model directory.
+# This script uses environment variables produced by parseargs.sh.
+#
+# Copyright IBM Corporation, 2018
+#
+# Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
+
+T=/tmp/runlitmushist.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+if test -d litmus
+then
+ :
+else
+ echo Directory \"litmus\" missing, aborting run.
+ exit 1
+fi
+
+# Prefixes for per-CPU scripts
+for ((i=0;i<$LKMM_JOBS;i++))
+do
+ echo dir="$LKMM_DESTDIR" > $T/$i.sh
+ echo T=$T >> $T/$i.sh
+ echo herdoptions=\"$LKMM_HERD_OPTIONS\" >> $T/$i.sh
+ cat << '___EOF___' >> $T/$i.sh
+ runtest () {
+ echo ' ... ' /usr/bin/time $LKMM_TIMEOUT_CMD herd7 $herdoptions $1 '>' $dir/$1.out '2>&1'
+ if /usr/bin/time $LKMM_TIMEOUT_CMD herd7 $herdoptions $1 > $dir/$1.out 2>&1
+ then
+ if ! grep -q '^Observation ' $dir/$1.out
+ then
+ echo ' !!! Herd failed, no Observation:' $1
+ fi
+ else
+ exitcode=$?
+ if test "$exitcode" -eq 124
+ then
+ exitmsg="timed out"
+ else
+ exitmsg="failed, exit code $exitcode"
+ fi
+ echo ' !!! Herd' ${exitmsg}: $1
+ fi
+ }
+___EOF___
+done
+
+awk -v q="'" -v b='\\' '
+{
+ print "echo `grep " q "^P[0-9]" b "+(" q " " $0 " | tail -1 | sed -e " q "s/^P" b "([0-9]" b "+" b ")(.*$/" b "1/" q "` " $0
+}' | bash |
+sort -k1n |
+awk -v ncpu=$LKMM_JOBS -v t=$T '
+{
+ print "runtest " $2 >> t "/" NR % ncpu ".sh";
+}
+
+END {
+ for (i = 0; i < ncpu; i++) {
+ print "sh " t "/" i ".sh > " t "/" i ".sh.out 2>&1 &";
+ close(t "/" i ".sh");
+ }
+ print "wait";
+}' | sh
+cat $T/*.sh.out
+if grep -q '!!!' $T/*.sh.out
+then
+ echo ' ---' Summary: 1>&2
+ grep '!!!' $T/*.sh.out 1>&2
+ nfail="`grep '!!!' $T/*.sh.out | wc -l`"
+ echo 'Number of failed herd7 runs (e.g., timeout): ' $nfail 1>&2
+ exit 1
+else
+ echo All runs completed successfully. 1>&2
+ exit 0
+fi