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Peter Anvin" , Paolo Bonzini , Wanpeng Li , Vitaly Kuznetsov , Andy Lutomirski , Peter Zijlstra , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Andrew Morton , Uladzislau Rezki , Christoph Hellwig , Lorenzo Stoakes , Josh Poimboeuf , Jason Baron , Kees Cook , Sami Tolvanen , Ard Biesheuvel , Nicholas Piggin , Juerg Haefliger , Nicolas Saenz Julienne , "Kirill A. Shutemov" , Nadav Amit , Dan Carpenter , Chuang Wang , Yang Jihong , Petr Mladek , "Jason A. Donenfeld" , Song Liu , Julian Pidancet , Tom Lendacky , Dionna Glaze , Thomas =?utf-8?Q?Wei=C3=9Fschuh?= , Juri Lelli , Daniel Bristot de Oliveira , Marcelo Tosatti , Yair Podemsky Subject: Re: [RFC PATCH v2 17/20] rcutorture: Add a test config to torture test low RCU_DYNTICKS width In-Reply-To: <7d2fdbb7-e574-40e8-8561-40a3873abc88@paulmck-laptop> References: <20230720163056.2564824-1-vschneid@redhat.com> <20230720163056.2564824-18-vschneid@redhat.com> <24b55289-1c35-41cc-9ad3-baa957f1c9cb@paulmck-laptop> <5143d0a9-bc02-4b9a-8613-2383bfdee35c@paulmck-laptop> <7d2fdbb7-e574-40e8-8561-40a3873abc88@paulmck-laptop> Date: Fri, 21 Jul 2023 16:08:04 +0100 Message-ID: MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 0766BC0026 X-Stat-Signature: j1t5m7tirund6p9j6wucfyycgpwfpeng X-HE-Tag: 1689952096-585372 X-HE-Meta: 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 +pE2UX3F zCNWeswuXIAzpP7NiiisMUhTq9U5WEqKuWvlCFtEIZ5bZmK2o9p3Ve/j9uq35pQ0KbMP6fJFWemYHfXVAiOV7t1tKbMym4jYEEYvFd9hhZys62+64UnO37P7cfXYwlw//xIZNQXdUUgelz0x5eF49y30aVrIkU39MY2nFT0ahGCwnZrrEmtQmr+vf5DS1cNq1jylrsagoXmPhc6XVdKmqn+PA9+AM5d4QCmcQOVTEGAu/9LxA2AHdgBMXh/UFhOpxA62OWtkWnguomhWOqNq9msZ374xy5xVW/i35d1oTYNDzZOnzz+QL0NJwOVOq1EQb6t9f+K8O1E87xfxxsXA+0pX7k6imybGHfBmzU9YDsfTEZpRf1araqA/Or9dfxbTPeoOadghrxG1hnJA= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 21/07/23 07:07, Paul E. McKenney wrote: > On Fri, Jul 21, 2023 at 08:58:53AM +0100, Valentin Schneider wrote: >> On 20/07/23 21:00, Paul E. McKenney wrote: >> > On Thu, Jul 20, 2023 at 12:53:05PM -0700, Paul E. McKenney wrote: >> >> On Thu, Jul 20, 2023 at 05:30:53PM +0100, Valentin Schneider wrote: >> >> > diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE11 b/tools/testing/selftests/rcutorture/configs/rcu/TREE11 >> >> > new file mode 100644 >> >> > index 0000000000000..aa7274efd9819 >> >> > --- /dev/null >> >> > +++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE11 >> >> > @@ -0,0 +1,19 @@ >> >> > +CONFIG_SMP=y >> >> > +CONFIG_NR_CPUS=8 >> >> > +CONFIG_PREEMPT_NONE=n >> >> > +CONFIG_PREEMPT_VOLUNTARY=y >> >> > +CONFIG_PREEMPT=n >> >> > +CONFIG_PREEMPT_DYNAMIC=n >> >> > +#CHECK#CONFIG_TREE_RCU=y >> >> > +CONFIG_HZ_PERIODIC=n >> >> > +CONFIG_NO_HZ_IDLE=n >> >> > +CONFIG_NO_HZ_FULL=y >> >> > +CONFIG_RCU_TRACE=y >> >> > +CONFIG_RCU_FANOUT=4 >> >> > +CONFIG_RCU_FANOUT_LEAF=3 >> >> > +CONFIG_DEBUG_LOCK_ALLOC=n >> >> > +CONFIG_DEBUG_OBJECTS_RCU_HEAD=n >> >> > +CONFIG_RCU_EXPERT=y >> >> > +CONFIG_RCU_EQS_DEBUG=y >> >> > +CONFIG_RCU_LAZY=y >> >> > +CONFIG_RCU_DYNTICKS_BITS=2 >> >> >> >> Why not just add this last line to the existing TREE04 scenario? >> >> That would ensure that it gets tested regularly without extending the >> >> time required to run a full set of rcutorture tests. >> > >> > Please see below for the version of this patch that I am running overnight >> > tests with. Does this one work for you? >> >> Yep that's fine with me. I only went with a separate test file as wasn't >> sure how new test options should be handled (merged into existing tests vs >> new tests created), and didn't want to negatively impact TREE04 or >> TREE06. If merging into TREE04 is preferred, then I'll do just that and >> carry this path moving forwards. > > Things worked fine for this one-hour-per-scenario test run on my laptop, Many thanks for testing! > except for the CONFIG_SMP=n runs, which all got build errors like the > following. > Harumph, yes !SMP (and !CONTEXT_TRACKING_WORK) doesn't compile nicely, I'll fix that for v3.