From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759758AbbA2L31 (ORCPT ); Thu, 29 Jan 2015 06:29:27 -0500 Received: from cantor2.suse.de ([195.135.220.15]:56105 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753638AbbA2L30 (ORCPT ); Thu, 29 Jan 2015 06:29:26 -0500 From: Takashi Iwai To: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org Subject: [PATCH] drivers/base/node: Avoid manual device_create_file() calls Date: Thu, 29 Jan 2015 12:29:22 +0100 Message-Id: <1422530962-2460-1-git-send-email-tiwai@suse.de> X-Mailer: git-send-email 2.2.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Instead of manual calls of multiple device_create_file() and device_remove_file(), use the static attribute groups assigned to the new device. This also fixes the possible races, too. Signed-off-by: Takashi Iwai --- drivers/base/node.c | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) diff --git a/drivers/base/node.c b/drivers/base/node.c index a3b82e9c7f20..6ce1d4343cf0 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -200,6 +200,25 @@ static ssize_t node_read_distance(struct device *dev, } static DEVICE_ATTR(distance, S_IRUGO, node_read_distance, NULL); +static struct attribute *node_dev_attrs[] = { + &dev_attr_cpumap.attr, + &dev_attr_cpulist.attr, + &dev_attr_meminfo.attr, + &dev_attr_numastat.attr, + &dev_attr_distance.attr, + &dev_attr_vmstat.attr, + NULL +}; + +static struct attribute_group node_dev_attr_group = { + .attrs = node_dev_attrs, +}; + +static const struct attribute_group *node_dev_attr_groups[] = { + &node_dev_attr_group, + NULL +}; + #ifdef CONFIG_HUGETLBFS /* * hugetlbfs per node attributes registration interface: @@ -273,16 +292,10 @@ static int register_node(struct node *node, int num, struct node *parent) node->dev.id = num; node->dev.bus = &node_subsys; node->dev.release = node_device_release; + node->dev.groups = node_dev_attr_groups; error = device_register(&node->dev); if (!error){ - device_create_file(&node->dev, &dev_attr_cpumap); - device_create_file(&node->dev, &dev_attr_cpulist); - device_create_file(&node->dev, &dev_attr_meminfo); - device_create_file(&node->dev, &dev_attr_numastat); - device_create_file(&node->dev, &dev_attr_distance); - device_create_file(&node->dev, &dev_attr_vmstat); - hugetlb_register_node(node); compaction_register_node(node); @@ -299,13 +312,6 @@ static int register_node(struct node *node, int num, struct node *parent) */ void unregister_node(struct node *node) { - device_remove_file(&node->dev, &dev_attr_cpumap); - device_remove_file(&node->dev, &dev_attr_cpulist); - device_remove_file(&node->dev, &dev_attr_meminfo); - device_remove_file(&node->dev, &dev_attr_numastat); - device_remove_file(&node->dev, &dev_attr_distance); - device_remove_file(&node->dev, &dev_attr_vmstat); - hugetlb_unregister_node(node); /* no-op, if memoryless node */ device_unregister(&node->dev); -- 2.2.2