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sysdev: Convert node driver

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Use sysdev_class attribute arrays in node driver

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

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Andi Kleen 2010-01-05 12:48:03 +01:00 committed by Greg Kroah-Hartman
parent 38457ab3a0
commit e1a7e29a26
1 changed files with 17 additions and 40 deletions
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57
drivers/base/cpu.c
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@ -13,8 +13,11 @@
#include "base.h"
static struct sysdev_class_attribute *cpu_sysdev_class_attrs[];
struct sysdev_class cpu_sysdev_class = {
.name = "cpu",
.attrs = cpu_sysdev_class_attrs,
};
EXPORT_SYMBOL(cpu_sysdev_class);
@ -90,20 +93,6 @@ static ssize_t cpu_release_store(struct class *class, const char *buf,
static CLASS_ATTR(probe, S_IWUSR, NULL, cpu_probe_store);
static CLASS_ATTR(release, S_IWUSR, NULL, cpu_release_store);
int __init cpu_probe_release_init(void)
{
int rc;
rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
&class_attr_probe.attr);
if (!rc)
rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
&class_attr_release.attr);
return rc;
}
device_initcall(cpu_probe_release_init);
#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
#else /* ... !CONFIG_HOTPLUG_CPU */
@ -162,6 +151,7 @@ static ssize_t show_cpus_attr(struct sysdev_class *class,
#define _CPU_ATTR(name, map) \
{ _SYSDEV_CLASS_ATTR(name, 0444, show_cpus_attr, NULL), map }
/* Keep in sync with cpu_sysdev_class_attrs */
static struct cpu_attr cpu_attrs[] = {
_CPU_ATTR(online, &cpu_online_mask),
_CPU_ATTR(possible, &cpu_possible_mask),
@ -212,29 +202,6 @@ static ssize_t print_cpus_offline(struct sysdev_class *class,
}
static SYSDEV_CLASS_ATTR(offline, 0444, print_cpus_offline, NULL);
static struct sysdev_class_attribute *cpu_state_attr[] = {
&cpu_attrs[0].attr,
&cpu_attrs[1].attr,
&cpu_attrs[2].attr,
&attr_kernel_max,
&attr_offline,
};
static int cpu_states_init(void)
{
int i;
int err = 0;
for (i = 0; i < ARRAY_SIZE(cpu_state_attr); i++) {
int ret;
ret = sysdev_class_create_file(&cpu_sysdev_class,
cpu_state_attr[i]);
if (!err)
err = ret;
}
return err;
}
/*
* register_cpu - Setup a sysfs device for a CPU.
* @cpu - cpu->hotpluggable field set to 1 will generate a control file in
@ -280,9 +247,6 @@ int __init cpu_dev_init(void)
int err;
err = sysdev_class_register(&cpu_sysdev_class);
if (!err)
err = cpu_states_init();
#if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
if (!err)
err = sched_create_sysfs_power_savings_entries(&cpu_sysdev_class);
@ -290,3 +254,16 @@ int __init cpu_dev_init(void)
return err;
}
static struct sysdev_class_attribute *cpu_sysdev_class_attrs[] = {
#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
&class_attr_probe.attr,
&class_attr_release.attr,
#endif
&cpu_attrs[0].attr,
&cpu_attrs[1].attr,
&cpu_attrs[2].attr,
&attr_kernel_max,
&attr_offline,
NULL
};