linux-kernel - [PATCH 7/7] xen: simplify sysctl registration for balloon

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Message-Id: <20230302204612.782387-8-mcgrof@kernel.org>
Date:   Thu,  2 Mar 2023 12:46:12 -0800
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     ebiederm@...ssion.com, keescook@...omium.org, yzaikin@...gle.com,
        jejb@...ux.ibm.com, martin.petersen@...cle.com, minyard@....org,
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        gregkh@...uxfoundation.org, jirislaby@...nel.org, jgross@...e.com,
        sstabellini@...nel.org, oleksandr_tyshchenko@...m.com,
        xen-devel@...ts.xenproject.org
Cc:     j.granados@...sung.com, zhangpeng362@...wei.com,
        tangmeng@...ontech.com, willy@...radead.org, nixiaoming@...wei.com,
        sujiaxun@...ontech.com, patches@...ts.linux.dev,
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        linux-kernel@...r.kernel.org, Luis Chamberlain <mcgrof@...nel.org>
Subject: [PATCH 7/7] xen: simplify sysctl registration for balloon

register_sysctl_table() is a deprecated compatibility wrapper.
register_sysctl_init() can do the directory creation for you so just
use that.

Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 drivers/xen/balloon.c | 20 +-------------------
 1 file changed, 1 insertion(+), 19 deletions(-)

diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 617a7f4f07a8..586a1673459e 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -97,24 +97,6 @@ static struct ctl_table balloon_table[] = {
 	{ }
 };
 
-static struct ctl_table balloon_root[] = {
-	{
-		.procname	= "balloon",
-		.mode		= 0555,
-		.child		= balloon_table,
-	},
-	{ }
-};
-
-static struct ctl_table xen_root[] = {
-	{
-		.procname	= "xen",
-		.mode		= 0555,
-		.child		= balloon_root,
-	},
-	{ }
-};
-
 #else
 #define xen_hotplug_unpopulated 0
 #endif
@@ -747,7 +729,7 @@ static int __init balloon_init(void)
 #ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
 	set_online_page_callback(&xen_online_page);
 	register_memory_notifier(&xen_memory_nb);
-	register_sysctl_table(xen_root);
+	register_sysctl_init("xen/balloon", balloon_table);
 #endif
 
 	balloon_add_regions();
-- 
2.39.1