Contributors: 63
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Gleixner |
216 |
19.15% |
12 |
9.68% |
| Andi Kleen |
66 |
5.85% |
4 |
3.23% |
| Nicholas Piggin |
54 |
4.79% |
3 |
2.42% |
| Andrew Morton |
51 |
4.52% |
8 |
6.45% |
| David Kaplan |
50 |
4.43% |
1 |
0.81% |
| Sudeep Holla |
47 |
4.17% |
4 |
3.23% |
| Ashok Raj |
43 |
3.81% |
3 |
2.42% |
| Kay Sievers |
38 |
3.37% |
2 |
1.61% |
| Rafael J. Wysocki |
37 |
3.28% |
5 |
4.03% |
| Pawan Gupta |
36 |
3.19% |
5 |
4.03% |
| Qais Yousef |
32 |
2.84% |
6 |
4.84% |
| Nathan Fontenot |
31 |
2.75% |
1 |
0.81% |
| Rusty Russell |
30 |
2.66% |
5 |
4.03% |
| Sean Christopherson |
27 |
2.39% |
1 |
0.81% |
| Christian Krafft |
26 |
2.30% |
1 |
0.81% |
| Rik Van Riel |
26 |
2.30% |
2 |
1.61% |
| Mike Travis |
24 |
2.13% |
1 |
0.81% |
| Patrick Mochel |
22 |
1.95% |
2 |
1.61% |
| Josh Poimboeuf |
21 |
1.86% |
2 |
1.61% |
| Vivek Goyal |
18 |
1.60% |
1 |
0.81% |
| Gautham R. Shenoy |
17 |
1.51% |
2 |
1.61% |
| Linus Torvalds (pre-git) |
14 |
1.24% |
4 |
3.23% |
| Len Brown |
13 |
1.15% |
1 |
0.81% |
| David S. Miller |
13 |
1.15% |
1 |
0.81% |
| Oleg Nesterov |
12 |
1.06% |
1 |
0.81% |
| Josh Triplett |
9 |
0.80% |
1 |
0.81% |
| Daniel Lezcano |
9 |
0.80% |
1 |
0.81% |
| Liu Shuo |
8 |
0.71% |
1 |
0.81% |
| Andy Grover |
8 |
0.71% |
1 |
0.81% |
| Benjamin Herrenschmidt |
8 |
0.71% |
1 |
0.81% |
| Chris Metcalf |
8 |
0.71% |
1 |
0.81% |
| Jiri Kosina |
7 |
0.62% |
1 |
0.81% |
| Russell King |
7 |
0.62% |
3 |
2.42% |
| Vineela Tummalapalli |
6 |
0.53% |
1 |
0.81% |
| Tyler Hicks |
6 |
0.53% |
1 |
0.81% |
| Paul E. McKenney |
6 |
0.53% |
1 |
0.81% |
| James Morse |
6 |
0.53% |
2 |
1.61% |
| Ingo Molnar |
5 |
0.44% |
2 |
1.61% |
| Ben Hutchings |
5 |
0.44% |
1 |
0.81% |
| Toshi Kani |
5 |
0.44% |
1 |
0.81% |
| Nico Pitre |
5 |
0.44% |
1 |
0.81% |
| Borislav Petkov |
4 |
0.35% |
2 |
1.61% |
| Greg Kroah-Hartman |
4 |
0.35% |
3 |
2.42% |
| Igor Mammedov |
4 |
0.35% |
1 |
0.81% |
| Pavel Machek |
3 |
0.27% |
1 |
0.81% |
| Tony Luck |
3 |
0.27% |
1 |
0.81% |
| Arnd Bergmann |
3 |
0.27% |
1 |
0.81% |
| Jonathan Corbet |
3 |
0.27% |
1 |
0.81% |
| Konrad Rzeszutek Wilk |
3 |
0.27% |
1 |
0.81% |
| Michael Ellerman |
3 |
0.27% |
1 |
0.81% |
| Alexandre Chartre |
3 |
0.27% |
1 |
0.81% |
| Kamezawa Hiroyuki |
3 |
0.27% |
1 |
0.81% |
| Joe Perches |
3 |
0.27% |
1 |
0.81% |
| Charlie Jenkins |
3 |
0.27% |
1 |
0.81% |
| Dave Hansen |
3 |
0.27% |
1 |
0.81% |
| Peter Zijlstra |
2 |
0.18% |
2 |
1.61% |
| Suresh B. Siddha |
2 |
0.18% |
1 |
0.81% |
| Manfred Spraul |
2 |
0.18% |
1 |
0.81% |
| Guenter Roeck |
1 |
0.09% |
1 |
0.81% |
| Nicolas Iooss |
1 |
0.09% |
1 |
0.81% |
| Linus Torvalds |
1 |
0.09% |
1 |
0.81% |
| Zijun Hu |
1 |
0.09% |
1 |
0.81% |
| Robert P. J. Day |
1 |
0.09% |
1 |
0.81% |
| Total |
1128 |
|
124 |
|
/* 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/cpuhotplug.h>
#include <linux/cpuhplock.h>
#include <linux/cpu_smt.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 ssize_t cpu_show_mds(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_tsx_async_abort(struct device *dev,
struct device_attribute *attr,
char *buf);
extern ssize_t cpu_show_itlb_multihit(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_srbds(struct device *dev, struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_mmio_stale_data(struct device *dev,
struct device_attribute *attr,
char *buf);
extern ssize_t cpu_show_retbleed(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_spec_rstack_overflow(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_gds(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_reg_file_data_sampling(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_ghostwrite(struct device *dev, struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_old_microcode(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_indirect_target_selection(struct device *dev,
struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_tsa(struct device *dev, struct device_attribute *attr, char *buf);
extern ssize_t cpu_show_vmscape(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, ...);
extern bool arch_cpu_is_hotpluggable(int cpu);
extern int arch_register_cpu(int cpu);
extern void arch_unregister_cpu(int cpu);
#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
#ifdef CONFIG_GENERIC_CPU_DEVICES
DECLARE_PER_CPU(struct cpu, cpu_devices);
#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 add_cpu(unsigned int cpu);
int cpu_device_up(struct device *dev);
void notify_cpu_starting(unsigned int cpu);
extern void cpu_maps_update_begin(void);
extern void cpu_maps_update_done(void);
int bringup_hibernate_cpu(unsigned int sleep_cpu);
void bringup_nonboot_cpus(unsigned int max_cpus);
int arch_cpu_rescan_dead_smt_siblings(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)
{
}
static inline int add_cpu(unsigned int cpu) { return 0;}
static inline int arch_cpu_rescan_dead_smt_siblings(void) { return 0; }
#endif /* CONFIG_SMP */
extern const struct bus_type cpu_subsys;
#ifdef CONFIG_PM_SLEEP_SMP
extern int freeze_secondary_cpus(int primary);
extern void thaw_secondary_cpus(void);
static inline int suspend_disable_secondary_cpus(void)
{
int cpu = 0;
if (IS_ENABLED(CONFIG_PM_SLEEP_SMP_NONZERO_CPU))
cpu = -1;
return freeze_secondary_cpus(cpu);
}
static inline void suspend_enable_secondary_cpus(void)
{
thaw_secondary_cpus();
}
#else /* !CONFIG_PM_SLEEP_SMP */
static inline void thaw_secondary_cpus(void) {}
static inline int suspend_disable_secondary_cpus(void) { return 0; }
static inline void suspend_enable_secondary_cpus(void) { }
#endif /* !CONFIG_PM_SLEEP_SMP */
void __noreturn cpu_startup_entry(enum cpuhp_state state);
void cpu_idle_poll_ctrl(bool enable);
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_tick_broadcast_enter(void);
void arch_tick_broadcast_exit(void);
void __noreturn arch_cpu_idle_dead(void);
#ifdef CONFIG_ARCH_HAS_CPU_FINALIZE_INIT
void arch_cpu_finalize_init(void);
#else
static inline void arch_cpu_finalize_init(void) { }
#endif
void play_idle_precise(u64 duration_ns, u64 latency_ns);
#ifdef CONFIG_HOTPLUG_CPU
void cpuhp_report_idle_dead(void);
#else
static inline void cpuhp_report_idle_dead(void) { }
#endif /* #ifdef CONFIG_HOTPLUG_CPU */
enum cpu_attack_vectors {
CPU_MITIGATE_USER_KERNEL,
CPU_MITIGATE_USER_USER,
CPU_MITIGATE_GUEST_HOST,
CPU_MITIGATE_GUEST_GUEST,
NR_CPU_ATTACK_VECTORS,
};
enum smt_mitigations {
SMT_MITIGATIONS_OFF,
SMT_MITIGATIONS_AUTO,
SMT_MITIGATIONS_ON,
};
#ifdef CONFIG_CPU_MITIGATIONS
extern bool cpu_mitigations_off(void);
extern bool cpu_mitigations_auto_nosmt(void);
extern bool cpu_attack_vector_mitigated(enum cpu_attack_vectors v);
extern enum smt_mitigations smt_mitigations;
#else
static inline bool cpu_mitigations_off(void)
{
return true;
}
static inline bool cpu_mitigations_auto_nosmt(void)
{
return false;
}
static inline bool cpu_attack_vector_mitigated(enum cpu_attack_vectors v)
{
return false;
}
#define smt_mitigations SMT_MITIGATIONS_OFF
#endif
#endif /* _LINUX_CPU_H_ */