Release 4.14 drivers/base/topology.c
/*
* driver/base/topology.c - Populate sysfs with cpu topology information
*
* Written by: Zhang Yanmin, Intel Corporation
*
* Copyright (C) 2006, Intel Corp.
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yanmin Zhang | 17 | 53.12% | 1 | 25.00% |
| Heiko Carstens | 10 | 31.25% | 1 | 25.00% |
| Kay Sievers | 4 | 12.50% | 1 | 25.00% |
| Akinobu Mita | 1 | 3.12% | 1 | 25.00% |
| Total | 32 | 100.00% | 4 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yanmin Zhang | 18 | 52.94% | 1 | 25.00% |
| Heiko Carstens | 10 | 29.41% | 1 | 25.00% |
| Kay Sievers | 4 | 11.76% | 1 | 25.00% |
| Sebastian Andrzej Siewior | 2 | 5.88% | 1 | 25.00% |
| Total | 34 | 100.00% | 4 | 100.00% |
static int topology_sysfs_init(void)
{
return cpuhp_setup_state(CPUHP_TOPOLOGY_PREPARE,
"base/topology:prepare", topology_add_dev,
topology_remove_dev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yanmin Zhang | 11 | 55.00% | 1 | 33.33% |
| Sebastian Andrzej Siewior | 7 | 35.00% | 1 | 33.33% |
| Heiko Carstens | 2 | 10.00% | 1 | 33.33% |
| Total | 20 | 100.00% | 3 | 100.00% |
device_initcall(topology_sysfs_init);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yanmin Zhang | 141 | 37.60% | 1 | 6.67% |
| Heiko Carstens | 121 | 32.27% | 3 | 20.00% |
| Sudeep Holla | 34 | 9.07% | 1 | 6.67% |
| Ben Hutchings | 24 | 6.40% | 1 | 6.67% |
| Mike Travis | 22 | 5.87% | 2 | 13.33% |
| Kay Sievers | 17 | 4.53% | 1 | 6.67% |
| Sebastian Andrzej Siewior | 9 | 2.40% | 1 | 6.67% |
| David S. Miller | 3 | 0.80% | 1 | 6.67% |
| Rusty Russell | 1 | 0.27% | 1 | 6.67% |
| Bartosz Golaszewski | 1 | 0.27% | 1 | 6.67% |
| Arvind Yadav | 1 | 0.27% | 1 | 6.67% |
| Akinobu Mita | 1 | 0.27% | 1 | 6.67% |
| Total | 375 | 100.00% | 15 | 100.00% |
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