Merge branch 'non-rcu/next' of https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git

7 files changed, 83 insertions, 3 deletions

diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 65b04b832733..32c319997638 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -91,7 +91,7 @@ usage () {
 	echo "       --remote"
 	echo "       --results absolute-pathname"
 	echo "       --shutdown-grace seconds"
-	echo "       --torture lock|rcu|rcuscale|refscale|scf|X*"
+	echo "       --torture hazptr|lock|rcu|rcuscale|refscale|scf|X*"
 	echo "       --trust-make"
 	exit 1
 }
@@ -256,9 +256,9 @@ do
 		shift
 		;;
 	--torture)
-		checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\|rcuscale\|refscale\|scf\|X.*\)$' '^--'
+		checkarg --torture "(suite name)" "$#" "$2" '^\(hazptr\|lock\|rcu\|rcuscale\|refscale\|scf\|X.*\)$' '^--'
 		TORTURE_SUITE=$2
-		TORTURE_MOD="`echo $TORTURE_SUITE | sed -e 's/^\(lock\|rcu\|scf\)$/\1torture/'`"
+		TORTURE_MOD="`echo $TORTURE_SUITE | sed -e 's/^\(hazptr\|lock\|rcu\|scf\)$/\1torture/'`"
 		shift
 		if test "$TORTURE_SUITE" = rcuscale || test "$TORTURE_SUITE" = refscale
 		then
diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/CFLIST b/tools/testing/selftests/rcutorture/configs/hazptr/CFLIST
new file mode 100644
index 000000000000..4d62eb4a39f9
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/hazptr/CFLIST
@@ -0,0 +1,2 @@
+NOPREEMPT
+PREEMPT
diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/CFcommon b/tools/testing/selftests/rcutorture/configs/hazptr/CFcommon
new file mode 100644
index 000000000000..c440d227007d
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/hazptr/CFcommon
@@ -0,0 +1,2 @@
+CONFIG_HAZPTR_TORTURE_TEST=y
+CONFIG_PRINTK_TIME=y
diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/NOPREEMPT b/tools/testing/selftests/rcutorture/configs/hazptr/NOPREEMPT
new file mode 100644
index 000000000000..405941f3b50f
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/hazptr/NOPREEMPT
@@ -0,0 +1,19 @@
+CONFIG_SMP=y
+CONFIG_NR_CPUS=16
+CONFIG_PREEMPT_LAZY=y
+CONFIG_PREEMPT_NONE=n
+CONFIG_PREEMPT_VOLUNTARY=n
+CONFIG_PREEMPT=n
+CONFIG_PREEMPT_DYNAMIC=n
+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_KPROBES=n
+CONFIG_FTRACE=n
+CONFIG_DEBUG_KERNEL=y
+CONFIG_HAZPTR_DEBUG=y
diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/NOPREEMPT.boot b/tools/testing/selftests/rcutorture/configs/hazptr/NOPREEMPT.boot
new file mode 100644
index 000000000000..1d09a6446080
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/hazptr/NOPREEMPT.boot
@@ -0,0 +1 @@
+hazptrtorture.torture_type=hazptr-stack
diff --git a/tools/testing/selftests/rcutorture/configs/hazptr/PREEMPT b/tools/testing/selftests/rcutorture/configs/hazptr/PREEMPT
new file mode 100644
index 000000000000..c5b12f3bef74
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/hazptr/PREEMPT
@@ -0,0 +1,16 @@
+CONFIG_SMP=y
+CONFIG_NR_CPUS=16
+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/ver_functions.sh b/tools/testing/selftests/rcutorture/configs/hazptr/ver_functions.sh
new file mode 100644
index 000000000000..a28ea2f292e4
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/hazptr/ver_functions.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Kernel-version-dependent shell functions for the rest of the scripts.
+#
+# Claude created this file, and I quote:
+#
+#	"I created [this file] modeled on the lock torture
+#	version. It defines per_version_boot_params to pass
+#	hazptrtorture.shutdown_secs=$3, hazptrtorture.stat_interval=15,
+#	hazptrtorture.verbose=1, and optional CPU-hotplug parameters to
+#	the kernel command line."
+#
+# I therefore kept locktorture's ver_functions.sh copyright notice:
+#
+# Copyright (C) Meta Platforms, Inc. and affiliates.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+# hazptrtorture_param_onoff bootparam-string config-file
+#
+# Adds onoff hazptrtorture module parameters to kernels having it.
+hazptrtorture_param_onoff () {
+	if ! bootparam_hotplug_cpu "$1" && configfrag_hotplug_cpu "$2"
+	then
+		echo CPU-hotplug kernel, adding hazptrtorture onoff. 1>&2
+		echo hazptrtorture.onoff_interval=3 hazptrtorture.onoff_holdoff=30
+	fi
+}
+
+# per_version_boot_params bootparam-string config-file seconds
+#
+# Adds per-version torture-module parameters to kernels supporting them.
+per_version_boot_params () {
+	echo	`hazptrtorture_param_onoff "$1" "$2"` \
+		hazptrtorture.stat_interval=15 \
+		hazptrtorture.shutdown_secs=$3 \
+		hazptrtorture.verbose=1 \
+		$1
+}