From 0e939e434a254224907cc379a0e7039984221500 Mon Sep 17 00:00:00 2001
From: Matthew Macy <mmacy@freebsd.org>
Date: Wed, 16 Oct 2019 18:37:31 -0700
Subject: [PATCH] Move linux specific mmp module_param_call handler to platform
 code

Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #9465
---
 module/os/linux/zfs/Makefile.in |  1 +
 module/os/linux/zfs/mmp_os.c    | 46 +++++++++++++++++++++++++++++++++
 module/zfs/mmp.c                | 28 --------------------
 3 files changed, 47 insertions(+), 28 deletions(-)
 create mode 100644 module/os/linux/zfs/mmp_os.c

diff --git a/module/os/linux/zfs/Makefile.in b/module/os/linux/zfs/Makefile.in
index ade6a20e9..e6cad2da4 100644
--- a/module/os/linux/zfs/Makefile.in
+++ b/module/os/linux/zfs/Makefile.in
@@ -10,6 +10,7 @@ endif
 ccflags-y += -I@abs_top_srcdir@/module/os/linux/zfs
 
 $(MODULE)-objs += ../os/linux/zfs/abd.o
+$(MODULE)-objs += ../os/linux/zfs/mmp_os.o
 $(MODULE)-objs += ../os/linux/zfs/policy.o
 $(MODULE)-objs += ../os/linux/zfs/trace.o
 $(MODULE)-objs += ../os/linux/zfs/qat.o
diff --git a/module/os/linux/zfs/mmp_os.c b/module/os/linux/zfs/mmp_os.c
new file mode 100644
index 000000000..b63f164b6
--- /dev/null
+++ b/module/os/linux/zfs/mmp_os.c
@@ -0,0 +1,46 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2017 by Lawrence Livermore National Security, LLC.
+ */
+
+#include <sys/zfs_context.h>
+#include <sys/mmp.h>
+
+static int
+param_set_multihost_interval(const char *val, zfs_kernel_param_t *kp)
+{
+	int ret;
+
+	ret = param_set_ulong(val, kp);
+	if (ret < 0)
+		return (ret);
+
+	if (spa_mode_global != 0)
+		mmp_signal_all_threads();
+
+	return (ret);
+}
+
+module_param_call(zfs_multihost_interval, param_set_multihost_interval,
+    param_get_ulong, &zfs_multihost_interval, 0644);
+MODULE_PARM_DESC(zfs_multihost_interval,
+	"Milliseconds between mmp writes to each leaf");
diff --git a/module/zfs/mmp.c b/module/zfs/mmp.c
index ae8d6b1a0..f1a30f877 100644
--- a/module/zfs/mmp.c
+++ b/module/zfs/mmp.c
@@ -716,36 +716,8 @@ mmp_signal_all_threads(void)
 	mutex_exit(&spa_namespace_lock);
 }
 
-#if defined(_KERNEL)
-
-static int
-param_set_multihost_interval(const char *val, zfs_kernel_param_t *kp)
-{
-	int ret;
-
-	ret = param_set_ulong(val, kp);
-	if (ret < 0)
-		return (ret);
-
-	if (spa_mode_global != 0)
-		mmp_signal_all_threads();
-
-	return (ret);
-}
-
-#endif
-
-/* BEGIN CSTYLED */
-#if defined(_KERNEL)
-module_param_call(zfs_multihost_interval, param_set_multihost_interval,
-    param_get_ulong, &zfs_multihost_interval, 0644);
-MODULE_PARM_DESC(zfs_multihost_interval,
-	"Milliseconds between mmp writes to each leaf");
-#endif
-
 ZFS_MODULE_PARAM(zfs_multihost, zfs_multihost_, fail_intervals, UINT, ZMOD_RW,
 	"Max allowed period without a successful mmp write");
 
 ZFS_MODULE_PARAM(zfs_multihost, zfs_multihost_, import_intervals, UINT, ZMOD_RW,
 	"Number of zfs_multihost_interval periods to wait for activity");
-/* END CSTYLED */