Re: [PATCH 2/4] torture: Remove CONFIG_NR_CPUS configuration

From: Paul E. McKenney
Date: Thu Jan 23 2025 - 15:33:23 EST


On Thu, Jan 23, 2025 at 07:58:26PM +0100, Uladzislau Rezki (Sony) wrote:
> This configuration specifies the maximum number of CPUs which
> is set to 8. The problem is that it can not be overwritten for
> something higher.
>
> Remove that configuration for TREE05, so it is possible to run
> the torture test on as many CPUs as many system has.
>
> Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>

You should be able to override this on the kvm.sh command line by
specifying "--kconfig CONFIG_NR_CPUS=128" or whatever number you wish.
For example, see the torture.sh querying the system's number of CPUs
and then specifying it to a number of tests.

Or am I missing something here?

Thanx, Paul

> ---
> tools/testing/selftests/rcutorture/configs/rcu/TREE05 | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE05 b/tools/testing/selftests/rcutorture/configs/rcu/TREE05
> index 9f48c73709ec..d6fbb82e3e6d 100644
> --- a/tools/testing/selftests/rcutorture/configs/rcu/TREE05
> +++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE05
> @@ -1,5 +1,4 @@
> CONFIG_SMP=y
> -CONFIG_NR_CPUS=8
> CONFIG_PREEMPT_NONE=y
> CONFIG_PREEMPT_VOLUNTARY=n
> CONFIG_PREEMPT=n
> --
> 2.39.5
>