tests: Add scripts to allow parallel execution of tests in VMs

"parallel-vm.sh <number of VMs> [arguments..]" can now be used to run
multiple VMs in parallel to speed up full test cycle significantly. In
addition, the "--split srv/total" argument used in this design would
also make it possible to split this to multiple servers to speed up
testing.

Signed-off-by: Jouni Malinen <j@w1.fi>

tests/hwsim/vm/parallel-vm.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+
+cd "$(dirname $0)"
+
+NUM=$1
+if [ -z "$NUM" ]; then
+    echo "usage: $0 <num servers> [params..]"
+    exit 1
+fi
+shift
+
+LOGS=/tmp/hwsim-test-logs
+mkdir -p $LOGS
+DATE=$(date +%s)
+
+for i in `seq 1 $NUM`; do
+    echo "Starting virtual machine $i/$NUM"
+    ./vm-run.sh --ext srv.$i --split $i/$NUM $* >> $LOGS/parallel-$DATE.srv.$i 2>&1 &
+done
+
+echo "Waiting for virtual machines to complete testing"
+wait
+echo "Testing completed"
+
+echo -n "PASS count: "
+grep ^PASS $LOGS/parallel-$DATE.srv.* | wc -l
+cat $LOGS/parallel-$DATE.srv.* | grep FAIL | sort