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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222/* 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_SNAPSHOTextern void kstat_snapshot_irqs(void);extern unsigned int kstat_get_irq_since_snapshot(unsigned int irq);#elsestatic 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 */
#elsestatic 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_GENextern u64 kcpustat_field(enum cpu_usage_stat usage, int cpu);extern void kcpustat_cpu_fetch(struct kernel_cpustat *dst, int cpu);#elsestatic 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_NATIVEstatic inline void account_process_tick(struct task_struct *tsk, int user){ if (!kcpustat_idle_dyntick()) vtime_flush(tsk);}#elseextern void account_process_tick(struct task_struct *, int user);#endif
#ifdef CONFIG_SCHED_COREextern void __account_forceidle_time(struct task_struct *tsk, u64 delta);#endif
#endif /* _LINUX_KERNEL_STAT_H */