diff options
| -rw-r--r-- | drivers/base/cpu.c | 54 | ||||
| -rw-r--r-- | include/linux/cpu.h | 4 |
2 files changed, 58 insertions, 0 deletions
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 4d8a56406fbb..f829a4c71749 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -363,6 +363,60 @@ struct device *get_cpu_device(unsigned cpu) } EXPORT_SYMBOL_GPL(get_cpu_device); +static void device_create_release(struct device *dev) +{ + kfree(dev); +} + +static struct device * +__cpu_device_create(struct device *parent, void *drvdata, + const struct attribute_group **groups, + const char *fmt, va_list args) +{ + struct device *dev = NULL; + int retval = -ENODEV; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + retval = -ENOMEM; + goto error; + } + + device_initialize(dev); + dev->parent = parent; + dev->groups = groups; + dev->release = device_create_release; + dev_set_drvdata(dev, drvdata); + + retval = kobject_set_name_vargs(&dev->kobj, fmt, args); + if (retval) + goto error; + + retval = device_add(dev); + if (retval) + goto error; + + return dev; + +error: + put_device(dev); + return ERR_PTR(retval); +} + +struct device *cpu_device_create(struct device *parent, void *drvdata, + const struct attribute_group **groups, + const char *fmt, ...) +{ + va_list vargs; + struct device *dev; + + va_start(vargs, fmt); + dev = __cpu_device_create(parent, drvdata, groups, fmt, vargs); + va_end(vargs); + return dev; +} +EXPORT_SYMBOL_GPL(cpu_device_create); + #ifdef CONFIG_GENERIC_CPU_AUTOPROBE static DEVICE_ATTR(modalias, 0444, print_cpu_modalias, NULL); #endif diff --git a/include/linux/cpu.h b/include/linux/cpu.h index b2d9a43012b2..4260e8594bd7 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -19,6 +19,7 @@ struct device; struct device_node; +struct attribute_group; struct cpu { int node_id; /* The node which contains the CPU */ @@ -39,6 +40,9 @@ extern void cpu_remove_dev_attr(struct device_attribute *attr); extern int cpu_add_dev_attr_group(struct attribute_group *attrs); extern void cpu_remove_dev_attr_group(struct attribute_group *attrs); +extern struct device *cpu_device_create(struct device *parent, void *drvdata, + const struct attribute_group **groups, + const char *fmt, ...); #ifdef CONFIG_HOTPLUG_CPU extern void unregister_cpu(struct cpu *cpu); extern ssize_t arch_cpu_probe(const char *, size_t); |