[PATCH 5.15 1/2] torture: Avoid torture-test reboot loops

[Joel Fernandes (Google)]

From: "Paul E. McKenney" <paulmck@xxxxxxxxxx>

[ Upstream commit 10f84c2cfb5045e37d78cb5d4c8e8321e06ae18f ]

Currently, the various torture tests sometimes react to an early-boot
bug by rebooting.  This is almost always counterproductive, needlessly
consuming CPU time and bloating the console log.  This commit therefore
adds the "-no-reboot" argument to qemu so that reboot requests will
cause qemu to exit.

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
Signed-off-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
---
 tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
index f4c8055dbf7a..c57be9563214 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
@@ -9,9 +9,10 @@
 #
 # Usage: kvm-test-1-run.sh config resdir seconds qemu-args boot_args_in
 #
-# qemu-args defaults to "-enable-kvm -nographic", along with arguments
-#			specifying the number of CPUs and other options
-#			generated from the underlying CPU architecture.
+# qemu-args defaults to "-enable-kvm -nographic -no-reboot", along with
+#			arguments specifying the number of CPUs and
+#			other options generated from the underlying
+#			CPU architecture.
 # boot_args_in defaults to value returned by the per_version_boot_params
 #			shell function.
 #
@@ -141,7 +142,7 @@ then
 fi
 
 # Generate -smp qemu argument.
-qemu_args="-enable-kvm -nographic $qemu_args"
+qemu_args="-enable-kvm -nographic -no-reboot $qemu_args"
 cpu_count=`configNR_CPUS.sh $resdir/ConfigFragment`
 cpu_count=`configfrag_boot_cpus "$boot_args_in" "$config_template" "$cpu_count"`
 if test "$cpu_count" -gt "$TORTURE_ALLOTED_CPUS"
-- 
2.42.0.rc1.204.g551eb34607-goog