oprofilefs_create_...() do not need superblock argument

same story as with oprofilefs_mkdir()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
index 99131435..50d86c0 100644
--- a/arch/x86/oprofile/op_model_amd.c
+++ b/arch/x86/oprofile/op_model_amd.c
@@ -480,25 +480,25 @@
 
 	if (ibs_caps & IBS_CAPS_FETCHSAM) {
 		dir = oprofilefs_mkdir(root, "ibs_fetch");
-		oprofilefs_create_ulong(root->d_sb, dir, "enable",
+		oprofilefs_create_ulong(dir, "enable",
 					&ibs_config.fetch_enabled);
-		oprofilefs_create_ulong(root->d_sb, dir, "max_count",
+		oprofilefs_create_ulong(dir, "max_count",
 					&ibs_config.max_cnt_fetch);
-		oprofilefs_create_ulong(root->d_sb, dir, "rand_enable",
+		oprofilefs_create_ulong(dir, "rand_enable",
 					&ibs_config.rand_en);
 	}
 
 	if (ibs_caps & IBS_CAPS_OPSAM) {
 		dir = oprofilefs_mkdir(root, "ibs_op");
-		oprofilefs_create_ulong(root->d_sb, dir, "enable",
+		oprofilefs_create_ulong(dir, "enable",
 					&ibs_config.op_enabled);
-		oprofilefs_create_ulong(root->d_sb, dir, "max_count",
+		oprofilefs_create_ulong(dir, "max_count",
 					&ibs_config.max_cnt_op);
 		if (ibs_caps & IBS_CAPS_OPCNT)
-			oprofilefs_create_ulong(root->d_sb, dir, "dispatched_ops",
+			oprofilefs_create_ulong(dir, "dispatched_ops",
 						&ibs_config.dispatched_ops);
 		if (ibs_caps & IBS_CAPS_BRNTRGT)
-			oprofilefs_create_ulong(root->d_sb, dir, "branch_target",
+			oprofilefs_create_ulong(dir, "branch_target",
 						&ibs_config.branch_target);
 	}