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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, Christoph Hellwig <hch@infradead.org>,
	"Paul E. McKenney" <paulmck@kernel.org>
Subject: [PATCH v2 2/5] rcutorture: Remove SRCU-lite scenarios
Date: Tue,  1 Jul 2025 17:23:27 -0700	[thread overview]
Message-ID: <20250702002330.1074433-2-paulmck@kernel.org> (raw)
In-Reply-To: <2994ade2-bd06-4ba7-bcc9-be4d0d15ea0c@paulmck-laptop>

This commit prepares for the removal of SRCU-Lite by removing the SRCU-L
rcutorture scenario that tests it.

Both SRCU-lite and SRCU-fast provide faster readers by dropping the
smp_mb() call from their lock and unlock primitives, but incur a pair
of added RCU grace periods during the SRCU grace period.  There is a
trivial mapping from the SRCU-lite API to that of SRCU-fast, so there
should be no transition issues.

[ paulmck: Apply Christoph Hellwig feedback. ]

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 tools/testing/selftests/rcutorture/configs/rcu/CFLIST  |  1 -
 tools/testing/selftests/rcutorture/configs/rcu/SRCU-L  | 10 ----------
 .../selftests/rcutorture/configs/rcu/SRCU-L.boot       |  3 ---
 3 files changed, 14 deletions(-)
 delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-L
 delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-L.boot

diff --git a/tools/testing/selftests/rcutorture/configs/rcu/CFLIST b/tools/testing/selftests/rcutorture/configs/rcu/CFLIST
index 45f572570a8c3..98b6175e5aa09 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/CFLIST
+++ b/tools/testing/selftests/rcutorture/configs/rcu/CFLIST
@@ -5,7 +5,6 @@ TREE04
 TREE05
 TREE07
 TREE09
-SRCU-L
 SRCU-N
 SRCU-P
 SRCU-T
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L
deleted file mode 100644
index 3b4fa8dbef8a9..0000000000000
--- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L
+++ /dev/null
@@ -1,10 +0,0 @@
-CONFIG_RCU_TRACE=n
-CONFIG_SMP=y
-CONFIG_NR_CPUS=6
-CONFIG_HOTPLUG_CPU=y
-CONFIG_PREEMPT_NONE=y
-CONFIG_PREEMPT_VOLUNTARY=n
-CONFIG_PREEMPT=n
-#CHECK#CONFIG_RCU_EXPERT=n
-CONFIG_KPROBES=n
-CONFIG_FTRACE=n
diff --git a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L.boot b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L.boot
deleted file mode 100644
index 0207b3138c5be..0000000000000
--- a/tools/testing/selftests/rcutorture/configs/rcu/SRCU-L.boot
+++ /dev/null
@@ -1,3 +0,0 @@
-rcutorture.torture_type=srcu
-rcutorture.reader_flavor=0x4
-rcutorture.fwd_progress=3
-- 
2.40.1


  parent reply	other threads:[~2025-07-02  0:23 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-24 16:13 [PATCH 0/5] Remove SRCU-lite in favor of SRCU-fast Paul E. McKenney
2025-06-24 16:13 ` [PATCH 1/5] torture: Remove support for SRCU-lite Paul E. McKenney
2025-06-25 12:05   ` Christoph Hellwig
2025-06-26 10:54     ` Paul E. McKenney
2025-06-26 11:03       ` Christoph Hellwig
2025-06-26 14:37         ` Paul E. McKenney
2025-06-24 16:13 ` [PATCH 2/5] rcutorture: Remove SRCU-lite scenarios Paul E. McKenney
2025-06-24 16:13 ` [PATCH 3/5] rcutorture: Remove support for SRCU-lite Paul E. McKenney
2025-06-24 16:13 ` [PATCH 4/5] srcu: Remove SRCU-lite implementation Paul E. McKenney
2025-06-24 16:14 ` [PATCH 5/5] checkpatch: Remove SRCU-lite deprecation Paul E. McKenney
2025-07-02  0:23 ` [PATCH v2 0/5] Remove SRCU-lite in favor of SRCU-fast Paul E. McKenney
2025-07-02  0:23   ` [PATCH v2 1/5] torture: Remove support for SRCU-lite Paul E. McKenney
2025-07-02  0:23   ` Paul E. McKenney [this message]
2025-07-02  0:23   ` [PATCH v2 3/5] rcutorture: " Paul E. McKenney
2025-07-02  0:23   ` [PATCH v2 4/5] srcu: Remove SRCU-lite implementation Paul E. McKenney
2025-07-02  0:23   ` [PATCH v2 5/5] checkpatch: Remove SRCU-lite deprecation Paul E. McKenney

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