Hello!

This series makes a few small updates to make rcutorture run better
on arm64 servers.  Remaining issues include TREE07 .config issues
that are addressed by Mark Rutland's porting of PREEMPT_LAZY to arm64
and by upcoming work to handle the fact that arm64 kernels cannot be
built with CONFIG_SMP=n.  In the meantime, the CONFIG_SMP=n issue can
be worked around by explictly specifying the TREE01, TREE02, TREE03,
TREE04, TREE05, TREE07, SRCU-L, SRCU-N, SRCU-P, TASKS01, TASKS03, RUDE01,
TRACE01, and TRACE02 scenarios, preferably in a script.  (But if you
want typing practice, don't let me stand in your way!)

1.	Check for "Call trace:" as well as "Call Trace:".

2.	Reduce TREE01 CPU overcommit.

3.	Remove MAXSMP and CPUMASK_OFFSTACK from TREE01.

						Thanx, Paul

------------------------------------------------------------------------

 bin/console-badness.sh  |    2 +-
 bin/parse-console.sh    |    2 +-
 configs/rcu/TREE01      |    2 --
 configs/rcu/TREE01.boot |    2 +-
 4 files changed, 3 insertions(+), 5 deletions(-)

On 5/8/2025 7:42 PM, Paul E. McKenney wrote:
> Hello!
> 
> This series makes a few small updates to make rcutorture run better
> on arm64 servers.  Remaining issues include TREE07 .config issues
> that are addressed by Mark Rutland's porting of PREEMPT_LAZY to arm64
> and by upcoming work to handle the fact that arm64 kernels cannot be
> built with CONFIG_SMP=n.  In the meantime, the CONFIG_SMP=n issue can
> be worked around by explictly specifying the TREE01, TREE02, TREE03,
> TREE04, TREE05, TREE07, SRCU-L, SRCU-N, SRCU-P, TASKS01, TASKS03, RUDE01,
> TRACE01, and TRACE02 scenarios, preferably in a script.  (But if you
> want typing practice, don't let me stand in your way!)
> 
> 1.	Check for "Call trace:" as well as "Call Trace:".
> 
> 2.	Reduce TREE01 CPU overcommit.
> 
> 3.	Remove MAXSMP and CPUMASK_OFFSTACK from TREE01.
> 
Tested-by: Joel Fernandes <joelagnelf@nvidia.com>

Applied for 6.16, thanks!

 - Joel

On 5/8/2025 7:42 PM, Paul E. McKenney wrote:
> Hello!
> 
> This series makes a few small updates to make rcutorture run better
> on arm64 servers.  Remaining issues include TREE07 .config issues
> that are addressed by Mark Rutland's porting of PREEMPT_LAZY to arm64
> and by upcoming work to handle the fact that arm64 kernels cannot be
> built with CONFIG_SMP=n.  In the meantime, the CONFIG_SMP=n issue can
> be worked around by explictly specifying the TREE01, TREE02, TREE03,
> TREE04, TREE05, TREE07, SRCU-L, SRCU-N, SRCU-P, TASKS01, TASKS03, RUDE01,
> TRACE01, and TRACE02 scenarios, preferably in a script.  (But if you
> want typing practice, don't let me stand in your way!)
> 
> 1.	Check for "Call trace:" as well as "Call Trace:".
> 
> 2.	Reduce TREE01 CPU overcommit.
> 
> 3.	Remove MAXSMP and CPUMASK_OFFSTACK from TREE01.
> 

These I will take for 6.16 and run some tests, since we're seeing these issues
on ARM. But let me know if you want to delay to 6.17. Thanks!

On Fri, May 09, 2025 at 09:18:00AM -0400, Joel Fernandes wrote:
> 
> 
> On 5/8/2025 7:42 PM, Paul E. McKenney wrote:
> > Hello!
> > 
> > This series makes a few small updates to make rcutorture run better
> > on arm64 servers.  Remaining issues include TREE07 .config issues
> > that are addressed by Mark Rutland's porting of PREEMPT_LAZY to arm64
> > and by upcoming work to handle the fact that arm64 kernels cannot be
> > built with CONFIG_SMP=n.  In the meantime, the CONFIG_SMP=n issue can
> > be worked around by explictly specifying the TREE01, TREE02, TREE03,
> > TREE04, TREE05, TREE07, SRCU-L, SRCU-N, SRCU-P, TASKS01, TASKS03, RUDE01,
> > TRACE01, and TRACE02 scenarios, preferably in a script.  (But if you
> > want typing practice, don't let me stand in your way!)
> > 
> > 1.	Check for "Call trace:" as well as "Call Trace:".
> > 
> > 2.	Reduce TREE01 CPU overcommit.
> > 
> > 3.	Remove MAXSMP and CPUMASK_OFFSTACK from TREE01.
> > 
> 
> These I will take for 6.16 and run some tests, since we're seeing these issues
> on ARM. But let me know if you want to delay to 6.17. Thanks!

Your decision on both sets makes a lot of sense to me, v6.16 for the
simple ARM-related ones and v6.17 for the less-important and more-complex
series.

							Thanx, Paul