From: Zhouyi Zhou <zhouzhouyi@xxxxxxxxx>
Currently, default time between rcu torture forward-progress tests is 60HZ,
Under this configuration, false positive caused by __stack_chk_fail [1] is
difficult to reproduce (needs average 5*420 seconds for SRCU-P),
which means one has to invoke [2] 5 times in average to make [1] appear.
With time between rcu torture forward-progress tests be 1 HZ, above
phenomenon will be reproduced within 3 minutes, which means we can
reproduce [1] everytime we invoke [2].
Although [1] is a false positive, this change will make possible future
true bugs easier to be discovered.
[1] Link: https://lore.kernel.org/lkml/CAABZP2yS5=ZUwEZQ7iHkV0wDm_HgO8K-TeAhyJrZhavzKDa44Q@xxxxxxxxxxxxxx/T/
[2] tools/testing/selftests/rcutorture/bin/torture.sh
Tested in PPC VM of Opensource Lab of Oregon State Univerisity.
Signed-off-by: Zhouyi Zhou <zhouzhouyi@xxxxxxxxx>
---
tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot | 1 +
tools/testing/selftests/rcutorture/configs/rcu/SRCU-P.boot | 1 +
tools/testing/selftests/rcutorture/configs/rcu/TRACE02.boot | 1 +
tools/testing/selftests/rcutorture/configs/rcu/TREE02.boot | 1 +
tools/testing/selftests/rcutorture/configs/rcu/TREE10.boot | 1 +
5 files changed, 5 insertions(+)
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot
index ce0694fd9b92..982582bff041 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N.boot
@@ -1,2 +1,3 @@
rcutorture.torture_type=srcu
rcutorture.fwd_progress=3
+rcutorture.fwd_progress_holdoff=1
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P.boot b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P.boot
index 2db39f298d18..18f5d7361d8a 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P.boot
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P.boot
@@ -1,4 +1,5 @@
rcutorture.torture_type=srcud
rcupdate.rcu_self_test=1
rcutorture.fwd_progress=3
+rcutorture.fwd_progress_holdoff=1
srcutree.big_cpu_lim=5
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TRACE02.boot b/tools/testing/selftests/rcutorture/configs/rcu/TRACE02.boot
index c70b5db6c2ae..b86bc7df7603 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TRACE02.boot
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TRACE02.boot
@@ -1,2 +1,3 @@
rcutorture.torture_type=tasks-tracing
rcutorture.fwd_progress=2
+rcutorture.fwd_progress_holdoff=1
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE02.boot b/tools/testing/selftests/rcutorture/configs/rcu/TREE02.boot
index dd914fa8f690..933302f885df 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TREE02.boot
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE02.boot
@@ -1 +1,2 @@
rcutorture.fwd_progress=2
+rcutorture.fwd_progress_holdoff=1
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE10.boot b/tools/testing/selftests/rcutorture/configs/rcu/TREE10.boot
index dd914fa8f690..933302f885df 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TREE10.boot
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE10.boot
@@ -1 +1,2 @@
rcutorture.fwd_progress=2
+rcutorture.fwd_progress_holdoff=1
--
2.34.1
