linux/drivers/base/topology.c
Greg Kroah-Hartman 3282570990 driver core: Remove redundant license text
Now that the SPDX tag is in all driver core files, that identifies the
license in a specific and legally-defined manner.  So the extra GPL text
wording can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text.  And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "Luis R. Rodriguez" <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-07 18:36:44 +01:00

122 lines
3.2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* driver/base/topology.c - Populate sysfs with cpu topology information
*
* Written by: Zhang Yanmin, Intel Corporation
*
* Copyright (C) 2006, Intel Corp.
*
* All rights reserved.
*/
#include <linux/mm.h>
#include <linux/cpu.h>
#include <linux/module.h>
#include <linux/hardirq.h>
#include <linux/topology.h>
#define define_id_show_func(name) \
static ssize_t name##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
return sprintf(buf, "%d\n", topology_##name(dev->id)); \
}
#define define_siblings_show_map(name, mask) \
static ssize_t name##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
return cpumap_print_to_pagebuf(false, buf, topology_##mask(dev->id));\
}
#define define_siblings_show_list(name, mask) \
static ssize_t name##_list_show(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return cpumap_print_to_pagebuf(true, buf, topology_##mask(dev->id));\
}
#define define_siblings_show_func(name, mask) \
define_siblings_show_map(name, mask); \
define_siblings_show_list(name, mask)
define_id_show_func(physical_package_id);
static DEVICE_ATTR_RO(physical_package_id);
define_id_show_func(core_id);
static DEVICE_ATTR_RO(core_id);
define_siblings_show_func(thread_siblings, sibling_cpumask);
static DEVICE_ATTR_RO(thread_siblings);
static DEVICE_ATTR_RO(thread_siblings_list);
define_siblings_show_func(core_siblings, core_cpumask);
static DEVICE_ATTR_RO(core_siblings);
static DEVICE_ATTR_RO(core_siblings_list);
#ifdef CONFIG_SCHED_BOOK
define_id_show_func(book_id);
static DEVICE_ATTR_RO(book_id);
define_siblings_show_func(book_siblings, book_cpumask);
static DEVICE_ATTR_RO(book_siblings);
static DEVICE_ATTR_RO(book_siblings_list);
#endif
#ifdef CONFIG_SCHED_DRAWER
define_id_show_func(drawer_id);
static DEVICE_ATTR_RO(drawer_id);
define_siblings_show_func(drawer_siblings, drawer_cpumask);
static DEVICE_ATTR_RO(drawer_siblings);
static DEVICE_ATTR_RO(drawer_siblings_list);
#endif
static struct attribute *default_attrs[] = {
&dev_attr_physical_package_id.attr,
&dev_attr_core_id.attr,
&dev_attr_thread_siblings.attr,
&dev_attr_thread_siblings_list.attr,
&dev_attr_core_siblings.attr,
&dev_attr_core_siblings_list.attr,
#ifdef CONFIG_SCHED_BOOK
&dev_attr_book_id.attr,
&dev_attr_book_siblings.attr,
&dev_attr_book_siblings_list.attr,
#endif
#ifdef CONFIG_SCHED_DRAWER
&dev_attr_drawer_id.attr,
&dev_attr_drawer_siblings.attr,
&dev_attr_drawer_siblings_list.attr,
#endif
NULL
};
static const struct attribute_group topology_attr_group = {
.attrs = default_attrs,
.name = "topology"
};
/* Add/Remove cpu_topology interface for CPU device */
static int topology_add_dev(unsigned int cpu)
{
struct device *dev = get_cpu_device(cpu);
return sysfs_create_group(&dev->kobj, &topology_attr_group);
}
static int topology_remove_dev(unsigned int cpu)
{
struct device *dev = get_cpu_device(cpu);
sysfs_remove_group(&dev->kobj, &topology_attr_group);
return 0;
}
static int topology_sysfs_init(void)
{
return cpuhp_setup_state(CPUHP_TOPOLOGY_PREPARE,
"base/topology:prepare", topology_add_dev,
topology_remove_dev);
}
device_initcall(topology_sysfs_init);