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authorTakashi Iwai <tiwai@suse.de>2015-01-29 12:29:22 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-03-25 13:42:55 +0100
commit3c9b8aaf95bb4de3d8ac9fd83d4aca2c97bd9f2a (patch)
tree652b38a29be128c42ed64dda883728baaad008a0 /drivers/base
parent07afb6ace3bde4ffdce26befa6b2f38c5d708dd0 (diff)
downloadop-kernel-dev-3c9b8aaf95bb4de3d8ac9fd83d4aca2c97bd9f2a.zip
op-kernel-dev-3c9b8aaf95bb4de3d8ac9fd83d4aca2c97bd9f2a.tar.gz
drivers/base/node: Avoid manual device_create_file() calls
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 <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/node.c34
1 files changed, 20 insertions, 14 deletions
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 36fabe43..06dce51 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);
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