[PATCH 1/4] rcutorture: Update due to x86 not supporting none/voluntary preemption

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From: "Paul E. McKenney" <paulmck@kernel.org>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com,
	rostedt@goodmis.org, "Paul E. McKenney" <paulmck@kernel.org>
Subject: [PATCH 1/4] rcutorture: Update due to x86 not supporting none/voluntary preemption
Date: Tue,  3 Mar 2026 15:59:00 -0800	[thread overview]
Message-ID: <20260303235903.1967409-1-paulmck@kernel.org> (raw)
In-Reply-To: <2011d452-3c72-432a-af77-810238e80e6a@paulmck-laptop>

As of v7.0-rc1, architectures that support preemption, including x86 and
arm64, no longer support CONFIG_PREEMPT_NONE or CONFIG_PREEMPT_VOLUNTARY.
Attempting to build kernels with these two Kconfig options results in
.config errors.  This commit therefore switches such rcutorture scenarios
to CONFIG_PREEMPT_LAZY.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 tools/testing/selftests/rcutorture/configs/rcu/SRCU-N  | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/SRCU-T  | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/SRCU-U  | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/TASKS02 | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/TINY01  | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/TINY02  | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/TRACE01 | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/TREE04  | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/TREE05  | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/TREE06  | 3 ++-
 tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL | 3 ++-
 11 files changed, 22 insertions(+), 11 deletions(-)

diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N
index 07f5e0a70ae70..90797c9e9410e 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N
@@ -2,7 +2,8 @@ CONFIG_RCU_TRACE=n
 CONFIG_SMP=y
 CONFIG_NR_CPUS=4
 CONFIG_HOTPLUG_CPU=y
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 #CHECK#CONFIG_RCU_EXPERT=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-T b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-T
index c70cf0405f248..06e4d1030279c 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-T
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-T
@@ -1,5 +1,6 @@
 CONFIG_SMP=n
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_PREEMPT_DYNAMIC=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-U b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-U
index bc9eeabaa1b18..540fa4ee6b1ba 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-U
+++ b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-U
@@ -1,5 +1,6 @@
 CONFIG_SMP=n
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_PREEMPT_DYNAMIC=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TASKS02 b/tools/testing/selftests/rcutorture/configs/rcu/TASKS02
index 2f9fcffff5ae3..dd2bd4e08da4e 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TASKS02
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TASKS02
@@ -1,5 +1,6 @@
 CONFIG_SMP=n
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_PREEMPT_DYNAMIC=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TINY01 b/tools/testing/selftests/rcutorture/configs/rcu/TINY01
index bd5ed7b0da5f0..37be5468c9d9f 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TINY01
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TINY01
@@ -1,5 +1,6 @@
 CONFIG_SMP=n
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_PREEMPT_DYNAMIC=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TINY02 b/tools/testing/selftests/rcutorture/configs/rcu/TINY02
index 30439f6fc20e6..be8860342ef71 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TINY02
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TINY02
@@ -1,5 +1,6 @@
 CONFIG_SMP=n
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_PREEMPT_DYNAMIC=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TRACE01 b/tools/testing/selftests/rcutorture/configs/rcu/TRACE01
index 18efab346381a..8fb124c28f283 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TRACE01
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TRACE01
@@ -1,7 +1,8 @@
 CONFIG_SMP=y
 CONFIG_NR_CPUS=5
 CONFIG_HOTPLUG_CPU=y
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_PREEMPT_DYNAMIC=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE04 b/tools/testing/selftests/rcutorture/configs/rcu/TREE04
index f49fda1c88811..f9d54ddc73a20 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TREE04
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE04
@@ -1,7 +1,8 @@
 CONFIG_SMP=y
 CONFIG_NR_CPUS=8
+CONFIG_PREEMPT_LAZY=y
 CONFIG_PREEMPT_NONE=n
-CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_PREEMPT_DYNAMIC=n
 CONFIG_PREEMPT_LAZY=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE05 b/tools/testing/selftests/rcutorture/configs/rcu/TREE05
index 0513aa33c32c4..93a17fe050bd4 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TREE05
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE05
@@ -1,6 +1,7 @@
 CONFIG_SMP=y
 CONFIG_NR_CPUS=8
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_PREEMPT_LAZY=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE06 b/tools/testing/selftests/rcutorture/configs/rcu/TREE06
index bfd88c46dbd73..73a8945780abd 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TREE06
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE06
@@ -1,6 +1,7 @@
 CONFIG_SMP=y
 CONFIG_NR_CPUS=8
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_PREEMPT_LAZY=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL b/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL
index 5d546efa68e83..d18cfbd606220 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL
+++ b/tools/testing/selftests/rcutorture/configs/rcu/TRIVIAL
@@ -1,6 +1,7 @@
 CONFIG_SMP=y
 CONFIG_NR_CPUS=8
-CONFIG_PREEMPT_NONE=y
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
 CONFIG_PREEMPT_VOLUNTARY=n
 CONFIG_PREEMPT=n
 CONFIG_HZ_PERIODIC=n
-- 
2.40.1

next prev parent reply	other threads:[~2026-03-03 23:59 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-03 23:58 [PATCH 0/4] rcu: Fix lazy-preemption regression in torture-test suites Paul E. McKenney
2026-03-03 23:59 ` Paul E. McKenney [this message]
2026-03-04 17:26   ` [PATCH v2 1/4] rcutorture: Update due to x86 not supporting none/voluntary preemption Paul E. McKenney
2026-03-05  0:01     ` [PATCH v3 " Paul E. McKenney
2026-03-05 17:53       ` Joel Fernandes
2026-03-05 19:08         ` Paul E. McKenney
2026-03-05 18:22       ` Boqun Feng
2026-03-05 19:06         ` Paul E. McKenney
2026-03-05 19:59           ` Boqun Feng
2026-03-05 20:11             ` Paul E. McKenney
2026-03-05 21:08               ` Boqun Feng
2026-03-05 23:24                 ` Paul E. McKenney
2026-03-03 23:59 ` [PATCH 2/4] rcuscale: " Paul E. McKenney
2026-03-03 23:59 ` [PATCH 3/4] refscale: " Paul E. McKenney
2026-03-03 23:59 ` [PATCH 4/4] scftorture: " Paul E. McKenney
2026-03-05 21:29 ` [PATCH 0/4] rcu: Fix lazy-preemption regression in torture-test suites Boqun Feng

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