Contributors: 37
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Gleixner |
323 |
35.65% |
14 |
22.95% |
| Paul E. McKenney |
47 |
5.19% |
1 |
1.64% |
| Sudeep Holla |
43 |
4.75% |
2 |
3.28% |
| Rafael J. Wysocki |
41 |
4.53% |
2 |
3.28% |
| Christian Krafft |
34 |
3.75% |
1 |
1.64% |
| Andrew Morton |
33 |
3.64% |
4 |
6.56% |
| Rusty Russell |
31 |
3.42% |
4 |
6.56% |
| Oleg Nesterov |
29 |
3.20% |
1 |
1.64% |
| Toshi Kani |
24 |
2.65% |
1 |
1.64% |
| Nathan Fontenot |
22 |
2.43% |
1 |
1.64% |
| David S. Miller |
21 |
2.32% |
1 |
1.64% |
| Ashok Raj |
20 |
2.21% |
3 |
4.92% |
| Andi Kleen |
19 |
2.10% |
1 |
1.64% |
| Konrad Rzeszutek Wilk |
19 |
2.10% |
1 |
1.64% |
| Waiman Long |
19 |
2.10% |
1 |
1.64% |
| James Morse |
18 |
1.99% |
1 |
1.64% |
| Jiri Kosina |
17 |
1.88% |
1 |
1.64% |
| Srivatsa S. Bhat |
16 |
1.77% |
1 |
1.64% |
| Ingo Molnar |
16 |
1.77% |
2 |
3.28% |
| Américo Wang |
16 |
1.77% |
1 |
1.64% |
| Len Brown |
14 |
1.55% |
1 |
1.64% |
| Chris Metcalf |
13 |
1.43% |
1 |
1.64% |
| Kay Sievers |
12 |
1.32% |
1 |
1.64% |
| Patrick Mochel |
9 |
0.99% |
1 |
1.64% |
| Peter Zijlstra |
8 |
0.88% |
1 |
1.64% |
| Manfred Spraul |
8 |
0.88% |
1 |
1.64% |
| Josh Triplett |
8 |
0.88% |
1 |
1.64% |
| Anton Vorontsov |
7 |
0.77% |
1 |
1.64% |
| Nicolas Iooss |
4 |
0.44% |
1 |
1.64% |
| Jonathan Corbet |
3 |
0.33% |
1 |
1.64% |
| Kamezawa Hiroyuki |
3 |
0.33% |
1 |
1.64% |
| Paul Gortmaker |
3 |
0.33% |
1 |
1.64% |
| Suresh B. Siddha |
2 |
0.22% |
1 |
1.64% |
| Linus Torvalds |
1 |
0.11% |
1 |
1.64% |
| Robert P. J. Day |
1 |
0.11% |
1 |
1.64% |
| Greg Kroah-Hartman |
1 |
0.11% |
1 |
1.64% |
| Gautham R. Shenoy |
1 |
0.11% |
1 |
1.64% |
| Total |
906 |
|
61 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* include/linux/cpu.h - generic cpu definition
*
* This is mainly for topological representation. We define the
* basic 'struct cpu' here, which can be embedded in per-arch
* definitions of processors.
*
* Basic handling of the devices is done in drivers/base/cpu.c
*
* CPUs are exported via sysfs in the devices/system/cpu
* directory.
*/
#ifndef _LINUX_CPU_H_
#define _LINUX_CPU_H_
#include <linux/node.h>
#include <linux/compiler.h>
#include <linux/cpumask.h>
#include <linux/cpuhotplug.h>
struct device;
struct device_node;
struct attribute_group;
struct cpu {
int node_id; /* The node which contains the CPU */
int hotpluggable; /* creates sysfs control file if hotpluggable */
struct device dev;
};
extern void boot_cpu_init(void);
extern void boot_cpu_hotplug_init(void);
extern void cpu_init(void);
extern void trap_init(void);
extern int register_cpu(struct cpu *cpu, int num);
extern struct device *get_cpu_device(unsigned cpu);
extern bool cpu_is_hotpluggable(unsigned cpu);
extern bool arch_match_cpu_phys_id(int cpu, u64 phys_id);
extern bool arch_find_n_match_cpu_physical_id(struct device_node *cpun,
int cpu, unsigned int *thread);
extern int cpu_add_dev_attr(struct device_attribute *attr);
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 ssize_t cpu_show_meltdown(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_spectre_v1(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_spectre_v2(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_spec_store_bypass(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_l1tf(struct device *dev,
struct device_attribute *attr, char *buf);
extern __printf(4, 5)
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);
extern ssize_t arch_cpu_release(const char *, size_t);
#endif
/*
* These states are not related to the core CPU hotplug mechanism. They are
* used by various (sub)architectures to track internal state
*/
#define CPU_ONLINE 0x0002 /* CPU is up */
#define CPU_UP_PREPARE 0x0003 /* CPU coming up */
#define CPU_DEAD 0x0007 /* CPU dead */
#define CPU_DEAD_FROZEN 0x0008 /* CPU timed out on unplug */
#define CPU_POST_DEAD 0x0009 /* CPU successfully unplugged */
#define CPU_BROKEN 0x000B /* CPU did not die properly */
#ifdef CONFIG_SMP
extern bool cpuhp_tasks_frozen;
int cpu_up(unsigned int cpu);
void notify_cpu_starting(unsigned int cpu);
extern void cpu_maps_update_begin(void);
extern void cpu_maps_update_done(void);
#else /* CONFIG_SMP */
#define cpuhp_tasks_frozen 0
static inline void cpu_maps_update_begin(void)
{
}
static inline void cpu_maps_update_done(void)
{
}
#endif /* CONFIG_SMP */
extern struct bus_type cpu_subsys;
#ifdef CONFIG_HOTPLUG_CPU
extern void cpus_write_lock(void);
extern void cpus_write_unlock(void);
extern void cpus_read_lock(void);
extern void cpus_read_unlock(void);
extern int cpus_read_trylock(void);
extern void lockdep_assert_cpus_held(void);
extern void cpu_hotplug_disable(void);
extern void cpu_hotplug_enable(void);
void clear_tasks_mm_cpumask(int cpu);
int cpu_down(unsigned int cpu);
#else /* CONFIG_HOTPLUG_CPU */
static inline void cpus_write_lock(void) { }
static inline void cpus_write_unlock(void) { }
static inline void cpus_read_lock(void) { }
static inline void cpus_read_unlock(void) { }
static inline int cpus_read_trylock(void) { return true; }
static inline void lockdep_assert_cpus_held(void) { }
static inline void cpu_hotplug_disable(void) { }
static inline void cpu_hotplug_enable(void) { }
#endif /* !CONFIG_HOTPLUG_CPU */
/* Wrappers which go away once all code is converted */
static inline void cpu_hotplug_begin(void) { cpus_write_lock(); }
static inline void cpu_hotplug_done(void) { cpus_write_unlock(); }
static inline void get_online_cpus(void) { cpus_read_lock(); }
static inline void put_online_cpus(void) { cpus_read_unlock(); }
#ifdef CONFIG_PM_SLEEP_SMP
extern int freeze_secondary_cpus(int primary);
static inline int disable_nonboot_cpus(void)
{
return freeze_secondary_cpus(0);
}
extern void enable_nonboot_cpus(void);
#else /* !CONFIG_PM_SLEEP_SMP */
static inline int disable_nonboot_cpus(void) { return 0; }
static inline void enable_nonboot_cpus(void) {}
#endif /* !CONFIG_PM_SLEEP_SMP */
void cpu_startup_entry(enum cpuhp_state state);
void cpu_idle_poll_ctrl(bool enable);
/* Attach to any functions which should be considered cpuidle. */
#define __cpuidle __attribute__((__section__(".cpuidle.text")))
bool cpu_in_idle(unsigned long pc);
void arch_cpu_idle(void);
void arch_cpu_idle_prepare(void);
void arch_cpu_idle_enter(void);
void arch_cpu_idle_exit(void);
void arch_cpu_idle_dead(void);
int cpu_report_state(int cpu);
int cpu_check_up_prepare(int cpu);
void cpu_set_state_online(int cpu);
void play_idle(unsigned long duration_ms);
#ifdef CONFIG_HOTPLUG_CPU
bool cpu_wait_death(unsigned int cpu, int seconds);
bool cpu_report_death(void);
void cpuhp_report_idle_dead(void);
#else
static inline void cpuhp_report_idle_dead(void) { }
#endif /* #ifdef CONFIG_HOTPLUG_CPU */
enum cpuhp_smt_control {
CPU_SMT_ENABLED,
CPU_SMT_DISABLED,
CPU_SMT_FORCE_DISABLED,
CPU_SMT_NOT_SUPPORTED,
};
#if defined(CONFIG_SMP) && defined(CONFIG_HOTPLUG_SMT)
extern enum cpuhp_smt_control cpu_smt_control;
extern void cpu_smt_disable(bool force);
extern void cpu_smt_check_topology_early(void);
extern void cpu_smt_check_topology(void);
#else
# define cpu_smt_control (CPU_SMT_ENABLED)
static inline void cpu_smt_disable(bool force) { }
static inline void cpu_smt_check_topology_early(void) { }
static inline void cpu_smt_check_topology(void) { }
#endif
#endif /* _LINUX_CPU_H_ */