share_pool: Remove redundant sysctl_share_pool_hugepage_enable

ascend inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4EUVI
CVE: NA

-------------------------------------------------

sysctl_share_pool_hugepage_enable is no longer used.
Signed-off-by: NTang Yizhou <tangyizhou@huawei.com>
Reviewed-by: NDing Tianhong <dingtianhong@huawei.com>
Reviewed-by: NKefeng  Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

kernel/sysctl.c

@@ -1779,16 +1779,6 @@ static struct ctl_table vm_table[] = {
 		.extra1		= &zero,
 		.extra2		= &one,
 	},
-	{
-		/* 0: disable, 1: enable */
-		.procname	= "share_pool_hugepage_enable",
-		.data		= &sysctl_share_pool_hugepage_enable,
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= &zero,
-		.extra2		= &one,
-	},
 	{
 		/* 0: map_unlock, 1: map_lock */
 		.procname	= "share_pool_map_lock_enable",

mm/share_pool.c

@@ -220,8 +220,6 @@ static DEFINE_SPINLOCK(sp_area_lock);
 static struct rb_root sp_area_root = RB_ROOT;
 static bool host_svm_sp_enable = false;
 
-int sysctl_share_pool_hugepage_enable = 1;
-
 static unsigned long spa_size(struct sp_area *spa)
 {
 	return spa->real_size;