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Fri, 02 Oct 2026 10:11:44 -0700 (PDT) From: Kunwu Chan To: paulmck@kernel.org, corbet@lwn.net, mingo@redhat.com, frederic@kernel.org, neeraj.upadhyay@kernel.org, josh@joshtriplett.org, urezki@gmail.com, dave@stgolabs.net, lianux.mm@gmail.com Cc: stern@rowland.harvard.edu, parri.andrea@gmail.com, will@kernel.org, peterz@infradead.org, boqun@kernel.org, npiggin@gmail.com, dhowells@redhat.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr, akiyks@gmail.com, dlustig@nvidia.com, joelagnelf@nvidia.com, skhan@linuxfoundation.org, rdunlap@infradead.org, longman@redhat.com, rostedt@goodmis.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, qiang.zhang@linux.dev, kunwu.chan@gmail.com, brads@mainlining.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, lkmm@lists.linux.dev, linux-doc@vger.kernel.org, rcu@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH RFC v2 14/15] hazptrtorture: add 128- and 256-CPU configs Date: Sat, 3 Oct 2026 01:08:46 +0800 Message-ID: <20261002170847.3653663-15-kunwu.chan@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261002170847.3653663-1-kunwu.chan@gmail.com> References: <20261002170847.3653663-1-kunwu.chan@gmail.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add CPU128 and CPU256 configs for hazptr-stack torture testing. These configs exercise the shared-scan path at larger CPU counts. Signed-off-by: Kunwu Chan --- .../selftests/rcutorture/configs/hazptr/CFLIST | 2 ++ .../selftests/rcutorture/configs/hazptr/CPU128 | 16 ++++++++++++++++ .../rcutorture/configs/hazptr/CPU128.boot | 1 + .../selftests/rcutorture/configs/hazptr/CPU256 | 16 ++++++++++++++++ .../rcutorture/configs/hazptr/CPU256.boot | 1 + 5 files changed, 36 insertions(+) create mode 100644 tools/testing/selftests/rcutorture/configs/hazptr/CPU128 create mode 100644 tools/testing/selftests/rcutorture/configs/hazptr/CPU128.boot create mode 100644 tools/testing/selftests/rcutorture/configs/hazptr/CPU256 create mode 100644 tools/testing/selftests/rcutorture/configs/hazptr/CPU256.boot diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/CFLIST b/tools/testing/selftests/rcutorture/configs/hazptr/CFLIST index 1826be30c066..90ef09b0e654 100644 --- a/tools/testing/selftests/rcutorture/configs/hazptr/CFLIST +++ b/tools/testing/selftests/rcutorture/configs/hazptr/CFLIST @@ -4,3 +4,5 @@ READERS0 READERS4 SLOWPATH LOCKDEP +CPU128 +CPU256 diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/CPU128 b/tools/testing/selftests/rcutorture/configs/hazptr/CPU128 new file mode 100644 index 000000000000..079b463607e8 --- /dev/null +++ b/tools/testing/selftests/rcutorture/configs/hazptr/CPU128 @@ -0,0 +1,16 @@ +CONFIG_SMP=y +CONFIG_NR_CPUS=128 +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/CPU128.boot b/tools/testing/selftests/rcutorture/configs/hazptr/CPU128.boot new file mode 100644 index 000000000000..1d09a6446080 --- /dev/null +++ b/tools/testing/selftests/rcutorture/configs/hazptr/CPU128.boot @@ -0,0 +1 @@ +hazptrtorture.torture_type=hazptr-stack diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/CPU256 b/tools/testing/selftests/rcutorture/configs/hazptr/CPU256 new file mode 100644 index 000000000000..b00a984977f3 --- /dev/null +++ b/tools/testing/selftests/rcutorture/configs/hazptr/CPU256 @@ -0,0 +1,16 @@ +CONFIG_SMP=y +CONFIG_NR_CPUS=256 +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/CPU256.boot b/tools/testing/selftests/rcutorture/configs/hazptr/CPU256.boot new file mode 100644 index 000000000000..1d09a6446080 --- /dev/null +++ b/tools/testing/selftests/rcutorture/configs/hazptr/CPU256.boot @@ -0,0 +1 @@ +hazptrtorture.torture_type=hazptr-stack -- 2.43.0