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rcutorture: Add NOCB01 config for RCU_LAZY torture testing

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Add new rcutorture config NOCB01 that enables CONFIG_RCU_LAZY combined
with CONFIG_RCU_NOCB_CPU to exercise the lazy callback code paths in
the NOCB implementation.

This config exercises lazy callback paths not covered by other configs,
including lazy-only wake and lazy defer logic.

This config is not added to CFLIST to avoid increasing the default
test duration; it can be run explicitly when lazy callback testing
is needed.

Acked-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
This commit is contained in:
Joel Fernandes 2026-01-05 03:42:41 -05:00
parent ad6ef775cb
commit 18a6770f1f
2 changed files with 23 additions and 0 deletions
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21
tools/testing/selftests/rcutorture/configs/rcu/NOCB01 Normal file
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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
CONFIG_RCU_LAZY=y

2
tools/testing/selftests/rcutorture/configs/rcu/NOCB01.boot Normal file
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rcupdate.rcu_self_test=1
rcu_nocbs=all