From: Joel Fernandes <joelagnelf@nvidia.com>
To: linux-kernel@vger.kernel.org,
"Paul E. McKenney" <paulmck@kernel.org>,
Josh Triplett <josh@joshtriplett.org>,
Steven Rostedt <rostedt@goodmis.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Shuah Khan <shuah@kernel.org>
Cc: rcu@vger.kernel.org, Joel Fernandes <joelagnelf@nvidia.com>,
linux-kselftest@vger.kernel.org
Subject: [PATCH -next v1 12/16] rcutorture: Add NOCB02 config for nocb poll mode testing
Date: Tue, 17 Mar 2026 17:22:13 -0400 [thread overview]
Message-ID: <20260317212217.1527644-13-joelagnelf@nvidia.com> (raw)
In-Reply-To: <20260317212217.1527644-1-joelagnelf@nvidia.com>
Add new rcutorture config NOCB02 that enables rcu_nocb_poll boot
parameter combined with CONFIG_RCU_NOCB_CPU to exercise the polling
mode code paths in the NOCB implementation.
This config exercises poll-mode paths not covered by other configs,
where callback invocation uses active polling instead of kthread
wakeups.
This config is not added to CFLIST to avoid increasing the default
test duration; it can be run explicitly when poll-mode testing
is needed.
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
---
.../selftests/rcutorture/configs/rcu/NOCB02 | 20 +++++++++++++++++++
.../rcutorture/configs/rcu/NOCB02.boot | 3 +++
2 files changed, 23 insertions(+)
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/NOCB02
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/NOCB02.boot
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/NOCB02 b/tools/testing/selftests/rcutorture/configs/rcu/NOCB02
new file mode 100644
index 000000000000..4c2b8cd6d8fd
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/NOCB02
@@ -0,0 +1,20 @@
+CONFIG_SMP=y
+CONFIG_NR_CPUS=8
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=y
+#CHECK#CONFIG_PREEMPT_RCU=y
+CONFIG_HZ_PERIODIC=n
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NO_HZ_FULL=n
+CONFIG_RCU_TRACE=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_RCU_FANOUT=3
+CONFIG_RCU_FANOUT_LEAF=2
+CONFIG_RCU_NOCB_CPU=y
+CONFIG_DEBUG_LOCK_ALLOC=n
+CONFIG_PROVE_LOCKING=n
+CONFIG_RCU_BOOST=n
+CONFIG_DEBUG_OBJECTS_RCU_HEAD=n
+CONFIG_RCU_EXPERT=y
+CONFIG_RCU_EQS_DEBUG=y
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/NOCB02.boot b/tools/testing/selftests/rcutorture/configs/rcu/NOCB02.boot
new file mode 100644
index 000000000000..c212ae299b0b
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/NOCB02.boot
@@ -0,0 +1,3 @@
+rcupdate.rcu_self_test=1
+rcu_nocbs=all
+rcu_nocb_poll
--
2.34.1
next prev parent reply other threads:[~2026-03-17 21:23 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-17 21:22 [PATCH -next v1 00/16] Candidate patches for the v7.1 merge window Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 01/16] rcutorture: Add a textbook-style trivial preemptible RCU Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 02/16] kvm-check-branches.sh: Remove in favor of kvm-series.sh Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 03/16] torture: Make hangs more visible in torture.sh output Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 04/16] torture: Print informative message for test without recheck file Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 05/16] rcutorture: Fix numeric "test" comparison in srcu_lockdep.sh Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 06/16] refscale: Ditch ref_scale_shutdown in favor of torture_shutdown_init() Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 07/16] rcuscale: Ditch rcu_scale_shutdown " Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 08/16] srcu: Fix SRCU read flavor macro comments Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 09/16] srcu: Fix s/they disables/they disable/ typo in srcu_read_unlock_fast() Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 10/16] rcu-tasks: Document that RCU Tasks Trace grace periods now imply RCU grace periods Joel Fernandes
2026-03-18 11:04 ` Frederic Weisbecker
2026-03-18 12:15 ` Frederic Weisbecker
2026-03-17 21:22 ` [PATCH -next v1 11/16] rcutorture: Add NOCB01 config for RCU_LAZY torture testing Joel Fernandes
2026-03-17 21:22 ` Joel Fernandes [this message]
2026-03-17 21:22 ` [PATCH -next v1 13/16] rcu-tasks: Remove unnecessary smp_store_release() in cblist_init_generic() Joel Fernandes
2026-03-18 10:57 ` Frederic Weisbecker
2026-03-17 21:22 ` [PATCH -next v1 14/16] rcu/nocb: Consolidate rcu_nocb_cpu_offload/deoffload functions Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 15/16] rcu/nocb: Extract nocb_bypass_needs_flush() to reduce duplication Joel Fernandes
2026-03-17 21:22 ` [PATCH -next v1 16/16] torture: Avoid modulo-zero error in torture_hrtimeout_ns() Joel Fernandes
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