Re: [PATCH 09/28] hazptrtorture: Add READERS4 and READERS0 torture configs

[Paul E. McKenney]

On Thu, Nov 05, 2026 at 12:54:27AM +0800, Kunwu Chan wrote:
> Add READERS4 and READERS0 configs to cover reader-active and
> reader-free synchronize paths.
> 
> Both use the PREEMPT baseline and hazptr-stack torture type,
> with four readers for READERS4 and no readers for READERS0.
> 
> Signed-off-by: Kunwu Chan <kunwu.chan@xxxxxxxxx>

For these, why not just add '--bootargs "hazptrtorture.nreaders=0"'
to the kvm.sh command line, for example in torture.sh?  Ditto for the
four-readers case.

							Thanx, Paul

> Acked-by: Bradley Morgan <brads@xxxxxxxxxxxxxx>
> ---
>  .../selftests/rcutorture/configs/hazptr/READERS0 | 16 ++++++++++++++++
>  .../rcutorture/configs/hazptr/READERS0.boot      |  2 ++
>  .../selftests/rcutorture/configs/hazptr/READERS4 | 16 ++++++++++++++++
>  .../rcutorture/configs/hazptr/READERS4.boot      |  2 ++
>  4 files changed, 36 insertions(+)
>  create mode 100644 tools/testing/selftests/rcutorture/configs/hazptr/READERS0
>  create mode 100644 tools/testing/selftests/rcutorture/configs/hazptr/READERS0.boot
>  create mode 100644 tools/testing/selftests/rcutorture/configs/hazptr/READERS4
>  create mode 100644 tools/testing/selftests/rcutorture/configs/hazptr/READERS4.boot
> 
> diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/READERS0 b/tools/testing/selftests/rcutorture/configs/hazptr/READERS0
> new file mode 100644
> index 000000000000..c5b12f3bef74
> --- /dev/null
> +++ b/tools/testing/selftests/rcutorture/configs/hazptr/READERS0
> @@ -0,0 +1,16 @@
> +CONFIG_SMP=y
> +CONFIG_NR_CPUS=16
> +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_HOTPLUG_CPU=y
> +CONFIG_SUSPEND=n
> +CONFIG_HIBERNATION=n
> +CONFIG_DEBUG_LOCK_ALLOC=n
> +CONFIG_PROVE_LOCKING=n
> +CONFIG_DEBUG_OBJECTS_RCU_HEAD=n
> +CONFIG_DEBUG_KERNEL=y
> +CONFIG_HAZPTR_DEBUG=y
> diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/READERS0.boot b/tools/testing/selftests/rcutorture/configs/hazptr/READERS0.boot
> new file mode 100644
> index 000000000000..f5564c218902
> --- /dev/null
> +++ b/tools/testing/selftests/rcutorture/configs/hazptr/READERS0.boot
> @@ -0,0 +1,2 @@
> +hazptrtorture.nreaders=0
> +hazptrtorture.torture_type=hazptr-stack
> diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/READERS4 b/tools/testing/selftests/rcutorture/configs/hazptr/READERS4
> new file mode 100644
> index 000000000000..c5b12f3bef74
> --- /dev/null
> +++ b/tools/testing/selftests/rcutorture/configs/hazptr/READERS4
> @@ -0,0 +1,16 @@
> +CONFIG_SMP=y
> +CONFIG_NR_CPUS=16
> +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_HOTPLUG_CPU=y
> +CONFIG_SUSPEND=n
> +CONFIG_HIBERNATION=n
> +CONFIG_DEBUG_LOCK_ALLOC=n
> +CONFIG_PROVE_LOCKING=n
> +CONFIG_DEBUG_OBJECTS_RCU_HEAD=n
> +CONFIG_DEBUG_KERNEL=y
> +CONFIG_HAZPTR_DEBUG=y
> diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/READERS4.boot b/tools/testing/selftests/rcutorture/configs/hazptr/READERS4.boot
> new file mode 100644
> index 000000000000..0d0df3f7dca4
> --- /dev/null
> +++ b/tools/testing/selftests/rcutorture/configs/hazptr/READERS4.boot
> @@ -0,0 +1,2 @@
> +hazptrtorture.nreaders=4
> +hazptrtorture.torture_type=hazptr-stack
> -- 
> 2.43.0
>