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Index: sys/compat/linuxkpi/common/include/linux/stop_machine.h
===================================================================
--- /dev/null
+++ sys/compat/linuxkpi/common/include/linux/stop_machine.h
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 2022 Beckhoff Automation GmbH & Co. KG
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#ifndef _LINUXKPI_LINUX_STOP_MACHINE_H_
+#define _LINUXKPI_LINUX_STOP_MACHINE_H_
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/proc.h>
+#include <sys/sched.h>
+
+#include <linux/cpu.h>
+#include <linux/smp.h>
+#include <linux/list.h>
+
+typedef int (*cpu_stop_fn_t)(void *arg);
+
+static inline int
+stop_machine(cpu_stop_fn_t fn, void *data, void *dummy)
+{
+ int ret;
+
+ sched_pin();
+ ret = fn(data);
+ sched_unpin();
+ return (ret);
+}
+
+#endif /* _LINUXKPI_LINUX_STOP_MACHINE_H_ */

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