Contributors: 31
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Frédéric Weisbecker |
426 |
45.95% |
19 |
24.68% |
| Glauber de Oliveira Costa |
51 |
5.50% |
2 |
2.60% |
| Zhen Lei |
48 |
5.18% |
3 |
3.90% |
| Linus Torvalds (pre-git) |
43 |
4.64% |
11 |
14.29% |
| Keika Kobayashi |
41 |
4.42% |
1 |
1.30% |
| Andrew Morton |
39 |
4.21% |
3 |
3.90% |
| Heiko Carstens |
35 |
3.78% |
1 |
1.30% |
| Martin Schwidefsky |
32 |
3.45% |
2 |
2.60% |
| Bitao Hu |
29 |
3.13% |
1 |
1.30% |
| Yinghai Lu |
25 |
2.70% |
3 |
3.90% |
| Thomas Gleixner |
22 |
2.37% |
8 |
10.39% |
| Roland McGrath |
20 |
2.16% |
1 |
1.30% |
| Kamezawa Hiroyuki |
20 |
2.16% |
2 |
2.60% |
| Venkatesh Pallipadi |
19 |
2.05% |
1 |
1.30% |
| Josh Don |
15 |
1.62% |
1 |
1.30% |
| Ingo Molnar |
14 |
1.51% |
2 |
2.60% |
| Michael Neuling |
11 |
1.19% |
1 |
1.30% |
| Linus Torvalds |
7 |
0.76% |
1 |
1.30% |
| Rusty Russell |
5 |
0.54% |
2 |
2.60% |
| Alan Mayer |
4 |
0.43% |
1 |
1.30% |
| Eric Dumazet |
4 |
0.43% |
1 |
1.30% |
| Sean Christopherson |
3 |
0.32% |
1 |
1.30% |
| Alexey Dobriyan |
3 |
0.32% |
1 |
1.30% |
| Peter Zijlstra |
2 |
0.22% |
1 |
1.30% |
| Arjan van de Ven |
2 |
0.22% |
1 |
1.30% |
| Christoph Lameter |
2 |
0.22% |
1 |
1.30% |
| Paul Mackerras |
1 |
0.11% |
1 |
1.30% |
| Srivatsa Vaddagiri |
1 |
0.11% |
1 |
1.30% |
| Ryota Ozaki |
1 |
0.11% |
1 |
1.30% |
| Greg Kroah-Hartman |
1 |
0.11% |
1 |
1.30% |
| Dhaval Giani |
1 |
0.11% |
1 |
1.30% |
| Total |
927 |
|
77 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_KERNEL_STAT_H
#define _LINUX_KERNEL_STAT_H
#include <linux/smp.h>
#include <linux/threads.h>
#include <linux/percpu.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/vtime.h>
#include <asm/irq.h>
/*
* 'kernel_stat.h' contains the definitions needed for doing
* some kernel statistics (CPU usage, context switches ...),
* used by rstatd/perfmeter
*/
enum cpu_usage_stat {
CPUTIME_USER,
CPUTIME_NICE,
CPUTIME_SYSTEM,
CPUTIME_SOFTIRQ,
CPUTIME_IRQ,
CPUTIME_IDLE,
CPUTIME_IOWAIT,
CPUTIME_STEAL,
CPUTIME_GUEST,
CPUTIME_GUEST_NICE,
#ifdef CONFIG_SCHED_CORE
CPUTIME_FORCEIDLE,
#endif
NR_STATS,
};
struct kernel_cpustat {
#ifdef CONFIG_NO_HZ_COMMON
bool idle_dyntick;
bool idle_elapse;
seqcount_t idle_sleeptime_seq;
u64 idle_entrytime;
u64 idle_stealtime[2];
#endif
u64 cpustat[NR_STATS];
};
struct kernel_stat {
unsigned long irqs_sum;
unsigned int softirqs[NR_SOFTIRQS];
};
DECLARE_PER_CPU(struct kernel_stat, kstat);
DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat);
/* Must have preemption disabled for this to be meaningful. */
#define kstat_this_cpu this_cpu_ptr(&kstat)
#define kcpustat_this_cpu this_cpu_ptr(&kernel_cpustat)
#define kstat_cpu(cpu) per_cpu(kstat, cpu)
#define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu)
extern unsigned long long nr_context_switches_cpu(int cpu);
extern unsigned long long nr_context_switches(void);
extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
extern void kstat_incr_irq_this_cpu(unsigned int irq);
static inline void kstat_incr_softirqs_this_cpu(unsigned int irq)
{
__this_cpu_inc(kstat.softirqs[irq]);
}
static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
{
return kstat_cpu(cpu).softirqs[irq];
}
static inline unsigned int kstat_cpu_softirqs_sum(int cpu)
{
int i;
unsigned int sum = 0;
for (i = 0; i < NR_SOFTIRQS; i++)
sum += kstat_softirqs_cpu(i, cpu);
return sum;
}
#ifdef CONFIG_GENERIC_IRQ_STAT_SNAPSHOT
extern void kstat_snapshot_irqs(void);
extern unsigned int kstat_get_irq_since_snapshot(unsigned int irq);
#else
static inline void kstat_snapshot_irqs(void) { }
static inline unsigned int kstat_get_irq_since_snapshot(unsigned int irq) { return 0; }
#endif
/*
* Number of interrupts per specific IRQ source, since bootup
*/
extern unsigned int kstat_irqs_usr(unsigned int irq);
/*
* Number of interrupts per cpu, since bootup
*/
static inline unsigned long kstat_cpu_irqs_sum(unsigned int cpu)
{
return kstat_cpu(cpu).irqs_sum;
}
#ifdef CONFIG_NO_HZ_COMMON
#ifdef CONFIG_HAVE_VIRT_CPU_ACCOUNTING_IDLE
static inline void kcpustat_dyntick_start(u64 now) { }
static inline void kcpustat_dyntick_stop(u64 now) { }
static inline void kcpustat_irq_enter(u64 now) { }
static inline void kcpustat_irq_exit(u64 now) { }
static inline bool kcpustat_idle_dyntick(void) { return false; }
extern u64 arch_kcpustat_field_idle(int cpu);
extern u64 arch_kcpustat_field_iowait(int cpu);
static inline u64 kcpustat_field_idle(int cpu)
{
return arch_kcpustat_field_idle(cpu);
}
static inline u64 kcpustat_field_iowait(int cpu)
{
return arch_kcpustat_field_iowait(cpu);
}
#else /* !CONFIG_HAVE_VIRT_CPU_ACCOUNTING_IDLE */
extern void kcpustat_dyntick_start(u64 now);
extern void kcpustat_dyntick_stop(u64 now);
extern void kcpustat_irq_enter(u64 now);
extern void kcpustat_irq_exit(u64 now);
extern u64 kcpustat_field_idle(int cpu);
extern u64 kcpustat_field_iowait(int cpu);
static inline bool kcpustat_idle_dyntick(void)
{
return __this_cpu_read(kernel_cpustat.idle_dyntick);
}
#endif /* !CONFIG_HAVE_VIRT_CPU_ACCOUNTING_IDLE */
#else
static inline u64 kcpustat_field_idle(int cpu)
{
return kcpustat_cpu(cpu).cpustat[CPUTIME_IDLE];
}
static inline u64 kcpustat_field_iowait(int cpu)
{
return kcpustat_cpu(cpu).cpustat[CPUTIME_IOWAIT];
}
static inline bool kcpustat_idle_dyntick(void)
{
return false;
}
#endif /* CONFIG_NO_HZ_COMMON */
extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time);
extern u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time);
/* Fetch cputime values when vtime is disabled on a CPU */
static inline u64 kcpustat_field_default(enum cpu_usage_stat usage, int cpu)
{
if (usage == CPUTIME_IDLE)
return kcpustat_field_idle(cpu);
if (usage == CPUTIME_IOWAIT)
return kcpustat_field_iowait(cpu);
return kcpustat_cpu(cpu).cpustat[usage];
}
static inline void kcpustat_cpu_fetch_default(struct kernel_cpustat *dst, int cpu)
{
*dst = kcpustat_cpu(cpu);
dst->cpustat[CPUTIME_IDLE] = kcpustat_field_idle(cpu);
dst->cpustat[CPUTIME_IOWAIT] = kcpustat_field_iowait(cpu);
}
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
extern u64 kcpustat_field(enum cpu_usage_stat usage, int cpu);
extern void kcpustat_cpu_fetch(struct kernel_cpustat *dst, int cpu);
#else
static inline u64 kcpustat_field(enum cpu_usage_stat usage, int cpu)
{
return kcpustat_field_default(usage, cpu);
}
static inline void kcpustat_cpu_fetch(struct kernel_cpustat *dst, int cpu)
{
kcpustat_cpu_fetch_default(dst, cpu);
}
#endif /* !CONFIG_VIRT_CPU_ACCOUNTING_GEN */
extern void account_user_time(struct task_struct *, u64);
extern void account_guest_time(struct task_struct *, u64);
extern void account_system_time(struct task_struct *, int, u64);
extern void account_system_index_time(struct task_struct *, u64,
enum cpu_usage_stat);
extern void account_steal_time(u64);
extern void account_idle_time(u64);
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
static inline void account_process_tick(struct task_struct *tsk, int user)
{
if (!kcpustat_idle_dyntick())
vtime_flush(tsk);
}
#else
extern void account_process_tick(struct task_struct *, int user);
#endif
#ifdef CONFIG_SCHED_CORE
extern void __account_forceidle_time(struct task_struct *tsk, u64 delta);
#endif
#endif /* _LINUX_KERNEL_STAT_H */