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From: Greg Kroah-Hartman on 2 Mar 2010 19:00
From: Andi Kleen <andi(a)firstfloor.org>

Using the new attribute argument convert the node driver class
attributes to carry the node state. Then use a shared function to do
what a lot of individual functions did before.

Signed-off-by: Andi Kleen <ak(a)linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>
---
drivers/base/node.c | 65 ++++++++++++++------------------------------------
1 files changed, 18 insertions(+), 47 deletions(-)

diff --git a/drivers/base/node.c b/drivers/base/node.c
index 85c9d30..aa8bc4b 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -544,59 +544,29 @@ static ssize_t print_nodes_state(enum node_states state, char *buf)
return n;
}

-static ssize_t print_nodes_possible(struct sysdev_class *class,
- struct sysdev_class_attribute *attr, char *buf)
-{
- return print_nodes_state(N_POSSIBLE, buf);
-}
-
-static ssize_t print_nodes_online(struct sysdev_class *class,
- struct sysdev_class_attribute *attr,
- char *buf)
-{
- return print_nodes_state(N_ONLINE, buf);
-}
-
-static ssize_t print_nodes_has_normal_memory(struct sysdev_class *class,
- struct sysdev_class_attribute *attr,
- char *buf)
-{
- return print_nodes_state(N_NORMAL_MEMORY, buf);
-}
-
-static ssize_t print_nodes_has_cpu(struct sysdev_class *class,
- struct sysdev_class_attribute *attr,
- char *buf)
-{
- return print_nodes_state(N_CPU, buf);
-}
-
-static SYSDEV_CLASS_ATTR(possible, 0444, print_nodes_possible, NULL);
-static SYSDEV_CLASS_ATTR(online, 0444, print_nodes_online, NULL);
-static SYSDEV_CLASS_ATTR(has_normal_memory, 0444, print_nodes_has_normal_memory,
- NULL);
-static SYSDEV_CLASS_ATTR(has_cpu, 0444, print_nodes_has_cpu, NULL);
+struct node_attr {
+ struct sysdev_class_attribute attr;
+ enum node_states state;
+};

-#ifdef CONFIG_HIGHMEM
-static ssize_t print_nodes_has_high_memory(struct sysdev_class *class,
- struct sysdev_class_attribute *attr,
- char *buf)
+static ssize_t show_node_state(struct sysdev_class *class,
+ struct sysdev_class_attribute *attr, char *buf)
{
- return print_nodes_state(N_HIGH_MEMORY, buf);
+ struct node_attr *na = container_of(attr, struct node_attr, attr);
+ return print_nodes_state(na->state, buf);
}

-static SYSDEV_CLASS_ATTR(has_high_memory, 0444, print_nodes_has_high_memory,
- NULL);
-#endif
+#define _NODE_ATTR(name, state) \
+ { _SYSDEV_CLASS_ATTR(name, 0444, show_node_state, NULL), state }

-struct sysdev_class_attribute *node_state_attr[] = {
- &attr_possible,
- &attr_online,
- &attr_has_normal_memory,
+static struct node_attr node_state_attr[] = {
+ _NODE_ATTR(possible, N_POSSIBLE),
+ _NODE_ATTR(online, N_ONLINE),
+ _NODE_ATTR(has_normal_memory, N_NORMAL_MEMORY),
+ _NODE_ATTR(has_cpu, N_CPU),
#ifdef CONFIG_HIGHMEM
- &attr_has_high_memory,
+ _NODE_ATTR(has_high_memory, N_HIGH_MEMORY),
#endif
- &attr_has_cpu,
};

static int node_states_init(void)
@@ -604,9 +574,10 @@ 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]);
+ ret = sysdev_class_create_file(&node_class, &node_state_attr[i].attr);
if (!err)
err = ret;
}
--
1.7.0.1

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Prev: [PATCH 07/36] serial: imx: fix NULL dereference Oops when pdata == NULL
Next: [PATCH 32/62] x86: move hp-wmi's probe function to .devinit.text