Re: [PATCH v2 0/12]

Joel Fernandes
2025-04-02T14:45:38Z

Hello Paul,

On 3/31/2025 5:02 PM, Paul E. McKenney wrote:
> Hello!
>
> The following series improves testing of SRCU-fast and SRCU up/down,
> deprecates SRCU-lite, enables torture.sh to skip non-debug testing,
> and adds testing for Rust's RCU bindings. The Rust RCU patch is very
> much in RFC state, but I am posting it anyway for wider exposure.

I will pull these into a topic branch, thanks. Since 6.15 -rc1 is not yet out, I
will keep it in the topic/integration branch for my testing and then rebase onto
-rc1 for the linux-next testing once -rc1 is out.

Thanks!

- Joel

>
> 1. Make srcu_lockdep.sh check kernel Kconfig.
>
> 2. Make srcu_lockdep.sh check reader-conflict handling.
>
> 3. Split out beginning and end from rcu_torture_one_read().
>
> 4. Make torture.sh --do-rt use CONFIG_PREEMPT_RT.
>
> 5. Add tests for SRCU up/down reader primitives.
>
> 6. Pull rcu_torture_updown() loop body into new function.
>
> 7. Comment invocations of tick_dep_set_task().
>
> 8. Complain if an ->up_read() is delayed more than 10 seconds.
>
> 9. Check for ->up_read() without matching ->down_read().
>
> 10. Deprecate srcu_read_lock_lite() and srcu_read_unlock_lite().
>
> 11. Add --do-{,no-}normal to torture.sh.
>
> 12. Add testing of RCU's Rust bindings to torture.sh. (RFC)
>
> Changes since v1:
>
> o Apply Z Qiang feedback.
>
> o Add SRCU-lite deprecation, torture.sh --do-{,no-}normal, and
> testing of RCU's Rust bindings.
>
> https://lore.kernel.org/all/4bf081c8-9299-4ee3-b337-d5b751cef6be@paulmck-laptop/
>
> Thanx, Paul
>
> ------------------------------------------------------------------------
>
> b/kernel/rcu/rcutorture.c | 124 ++++--
> b/scripts/checkpatch.pl | 2
> b/tools/testing/selftests/rcutorture/bin/srcu_lockdep.sh | 11
> b/tools/testing/selftests/rcutorture/bin/torture.sh | 12
> kernel/rcu/rcutorture.c | 298 ++++++++++++---
> tools/testing/selftests/rcutorture/bin/srcu_lockdep.sh | 31 +
> tools/testing/selftests/rcutorture/bin/torture.sh | 75 +++
> 7 files changed, 457 insertions(+), 96 deletions(-)