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dmi-id: Use dynamic sysfs attributes

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We can use sysfs attributes with an extra parameter for dmi id
attributes. This makes it possible to use the same callback function
for all attributes, reducing the binary size significantly (-18% on
x86_64.)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Lennart Poettering <mzxreary@0pointer.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jean Delvare 2007-08-13 11:24:33 +02:00 committed by Greg Kroah-Hartman
parent 990e53f880
commit 6374475661
1 changed files with 26 additions and 12 deletions
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36
drivers/firmware/dmi-id.c
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@ -13,21 +13,35 @@
#include <linux/device.h>
#include <linux/autoconf.h>
struct dmi_device_attribute{
struct device_attribute dev_attr;
int field;
};
#define to_dmi_dev_attr(_dev_attr) \
container_of(_dev_attr, struct dmi_device_attribute, dev_attr)
#define DEFINE_DMI_ATTR(_name, _mode, _show) \
static struct device_attribute sys_dmi_##_name##_attr = \
__ATTR(_name, _mode, _show, NULL);
static ssize_t sys_dmi_field_show(struct device *dev,
struct device_attribute *attr,
char *page)
{
int field = to_dmi_dev_attr(attr)->field;
ssize_t len;
len = scnprintf(page, PAGE_SIZE, "%s\n", dmi_get_system_info(field));
page[len-1] = '\n';
return len;
}
#define DMI_ATTR(_name, _mode, _show, _field) \
{ .dev_attr = __ATTR(_name, _mode, _show, NULL), \
.field = _field }
#define DEFINE_DMI_ATTR_WITH_SHOW(_name, _mode, _field) \
static ssize_t sys_dmi_##_name##_show(struct device *dev, \
struct device_attribute *attr, \
char *page) \
{ \
ssize_t len; \
len = scnprintf(page, PAGE_SIZE, "%s\n", dmi_get_system_info(_field)); \
page[len-1] = '\n'; \
return len; \
} \
DEFINE_DMI_ATTR(_name, _mode, sys_dmi_##_name##_show);
static struct dmi_device_attribute sys_dmi_##_name##_attr = \
DMI_ATTR(_name, _mode, sys_dmi_field_show, _field);
DEFINE_DMI_ATTR_WITH_SHOW(bios_vendor, 0444, DMI_BIOS_VENDOR);
DEFINE_DMI_ATTR_WITH_SHOW(bios_version, 0444, DMI_BIOS_VERSION);
@ -160,7 +174,7 @@ static struct device *dmi_dev;
#define ADD_DMI_ATTR(_name, _field) \
if (dmi_get_system_info(_field)) \
sys_dmi_attributes[i++] = & sys_dmi_##_name##_attr.attr;
sys_dmi_attributes[i++] = &sys_dmi_##_name##_attr.dev_attr.attr;
extern int dmi_available;