The torture.sh --do-rt command-line parameter is intended to mimic -rt
kernels. Now that CONFIG_PREEMPT_RT is upstream, this commit makes this
mimicking more precise.
Note that testing of RCU priority boosting is disabled in favor
of forward-progress testing of RCU callbacks. If it turns out to be
possible to make kernels built with CONFIG_PREEMPT_RT=y to tolerate
testing of both, both will be enabled.
Signed-off-by: Paul E. McKenney <paul...@kernel.org>
Cc: Sebastian Andrzej Siewior <bige...@linutronix.de>
---
tools/testing/selftests/rcutorture/bin/torture.sh | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/rcutorture/bin/torture.sh
b/tools/testing/selftests/rcutorture/bin/torture.sh
index 0447c4a00cc4d..9cabe505585ea 100755
--- a/tools/testing/selftests/rcutorture/bin/torture.sh
+++ b/tools/testing/selftests/rcutorture/bin/torture.sh
@@ -448,13 +448,17 @@ fi
if test "$do_rt" = "yes"
then
+ # In both runs, disable testing of RCU priority boosting because
+ # -rt doesn't like its interaction with testing of callback
+ # flooding.
+
# With all post-boot grace periods forced to normal.
- torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1
torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000
rcupdate.rcu_normal=1"
- torture_set "rcurttorture"
tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration
"$duration_rcutorture" --configs "TREE03" --trust-make
+ torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1
torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000
rcutorture.test_boost=0 rcupdate.rcu_normal=1"
+ torture_set "rcurttorture"
tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration
"$duration_rcutorture" --configs "TREE03" --kconfig "CONFIG_PREEMPT_LAZY=n
CONFIG_PREEMPT_RT=y CONFIG_EXPERT=y" --trust-make
# With all post-boot grace periods forced to expedited.
- torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1
torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000
rcupdate.rcu_expedited=1"
- torture_set "rcurttorture-exp"
tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration
"$duration_rcutorture" --configs "TREE03" --trust-make
+ torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1
torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000
rcutorture.test_boost=0 rcupdate.rcu_expedited=1"
+ torture_set "rcurttorture-exp"
tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration
"$duration_rcutorture" --configs "TREE03" --kconfig "CONFIG_PREEMPT_LAZY=n
CONFIG_PREEMPT_RT=y CONFIG_EXPERT=y" --trust-make
fi
if test "$do_srcu_lockdep" = "yes"
--
2.40.1
