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authorPaul E. McKenney <paulmck@kernel.org>2025-11-16 06:07:41 +0300
committerJoel Fernandes <joelagnelf@nvidia.com>2026-03-30 22:48:13 +0300
commitc6f4e552e1eae4a5726230254108213b085e1ae3 (patch)
treefdc2b13626bcb2968747219901970cc7084d3e3b /tools/testing/selftests
parent7aaa8047eafd0bd628065b15757d9b48c5f9c07d (diff)
downloadlinux-c6f4e552e1eae4a5726230254108213b085e1ae3.tar.xz
rcutorture: Add a textbook-style trivial preemptible RCU
This commit adds a trivial textbook implementation of preemptible RCU to rcutorture ("torture_type=trivial-preempt"), similar in spirit to the existing "torture_type=trivial" textbook implementation of non-preemptible RCU. Neither trivial RCU implementation has any value for production use, and are intended only to keep Paul honest in his introductory writings and presentations. [ paulmck: Apply kernel test robot feedback. ] Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Diffstat (limited to 'tools/testing/selftests')
-rw-r--r--tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL-PREEMPT12
-rw-r--r--tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL-PREEMPT.boot3
2 files changed, 15 insertions, 0 deletions
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL-PREEMPT b/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL-PREEMPT
new file mode 100644
index 000000000000..8230b14bfe68
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL-PREEMPT
@@ -0,0 +1,12 @@
+CONFIG_SMP=y
+CONFIG_NR_CPUS=8
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=y
+CONFIG_HZ_PERIODIC=n
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NO_HZ_FULL=n
+CONFIG_DEBUG_LOCK_ALLOC=n
+CONFIG_DEBUG_OBJECTS_RCU_HEAD=n
+CONFIG_RCU_EXPERT=y
+CONFIG_TRIVIAL_PREEMPT_RCU=y
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL-PREEMPT.boot b/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL-PREEMPT.boot
new file mode 100644
index 000000000000..299cd3a12df6
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL-PREEMPT.boot
@@ -0,0 +1,3 @@
+rcutorture.torture_type=trivial-preempt
+rcutorture.onoff_interval=0
+rcutorture.shuffle_interval=0