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Subject[PATCH] [7/12] SYSDEV: Use sysdev_class attribute arrays in node driver
Date

Convert the node driver to sysdev_class attribute arrays. This
greatly cleans up the code and remove a lot of code.

Saves ~150 bytes of code on x86-64.

Signed-off-by: Andi Kleen <ak@linux.intel.com>

---
drivers/base/node.c | 31 ++++++++++++++++---------------
1 file changed, 16 insertions(+), 15 deletions(-)

Index: linux-2.6.33-rc2-ak/drivers/base/node.c
===================================================================
--- linux-2.6.33-rc2-ak.orig/drivers/base/node.c
+++ linux-2.6.33-rc2-ak/drivers/base/node.c
@@ -16,8 +16,11 @@
#include <linux/device.h>
#include <linux/swap.h>

+static struct sysdev_class_attribute *node_state_attrs[];
+
static struct sysdev_class node_class = {
.name = "node",
+ .attrs = node_state_attrs,
};


@@ -569,29 +572,27 @@ static struct node_attr node_state_attr[
#endif
};

-static int node_states_init(void)
-{
- int i;
- int err = 0;
-
- BUILD_BUG_ON(ARRAY_SIZE(node_state_attr) != NR_NODE_STATES);
- for (i = 0; i < NR_NODE_STATES; i++) {
- int ret;
- ret = sysdev_class_create_file(&node_class, &node_state_attr[i].attr);
- if (!err)
- err = ret;
- }
- return err;
-}
+static struct sysdev_class_attribute *node_state_attrs[] = {
+ &node_state_attr[0].attr,
+ &node_state_attr[1].attr,
+ &node_state_attr[2].attr,
+ &node_state_attr[3].attr,
+#ifdef CONFIG_HIGHMEM
+ &node_state_attr[4].attr,
+#endif
+ NULL
+};

#define NODE_CALLBACK_PRI 2 /* lower than SLAB */
static int __init register_node_type(void)
{
int ret;

+ BUILD_BUG_ON(ARRAY_SIZE(node_state_attr) != NR_NODE_STATES);
+ BUILD_BUG_ON(ARRAY_SIZE(node_state_attrs)-1 != NR_NODE_STATES);
+
ret = sysdev_class_register(&node_class);
if (!ret) {
- ret = node_states_init();
hotplug_memory_notifier(node_memory_callback,
NODE_CALLBACK_PRI);
}

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