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117 lines
2.9 KiB
117 lines
2.9 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_KERNEL_STAT_H |
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#define _LINUX_KERNEL_STAT_H |
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#include <linux/smp.h> |
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#include <linux/threads.h> |
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#include <linux/percpu.h> |
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#include <linux/cpumask.h> |
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#include <linux/interrupt.h> |
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#include <linux/sched.h> |
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#include <linux/vtime.h> |
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#include <asm/irq.h> |
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/* |
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* 'kernel_stat.h' contains the definitions needed for doing |
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* some kernel statistics (CPU usage, context switches ...), |
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* used by rstatd/perfmeter |
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*/ |
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enum cpu_usage_stat { |
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CPUTIME_USER, |
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CPUTIME_NICE, |
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CPUTIME_SYSTEM, |
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CPUTIME_SOFTIRQ, |
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CPUTIME_IRQ, |
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CPUTIME_IDLE, |
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CPUTIME_IOWAIT, |
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CPUTIME_STEAL, |
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CPUTIME_GUEST, |
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CPUTIME_GUEST_NICE, |
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NR_STATS, |
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}; |
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struct kernel_cpustat { |
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u64 cpustat[NR_STATS]; |
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}; |
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struct kernel_stat { |
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unsigned long irqs_sum; |
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unsigned int softirqs[NR_SOFTIRQS]; |
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}; |
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DECLARE_PER_CPU(struct kernel_stat, kstat); |
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DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat); |
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/* Must have preemption disabled for this to be meaningful. */ |
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#define kstat_this_cpu this_cpu_ptr(&kstat) |
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#define kcpustat_this_cpu this_cpu_ptr(&kernel_cpustat) |
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#define kstat_cpu(cpu) per_cpu(kstat, cpu) |
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#define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu) |
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extern unsigned long long nr_context_switches(void); |
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extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); |
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extern void kstat_incr_irq_this_cpu(unsigned int irq); |
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static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) |
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{ |
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__this_cpu_inc(kstat.softirqs[irq]); |
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} |
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static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) |
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{ |
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return kstat_cpu(cpu).softirqs[irq]; |
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} |
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/* |
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* Number of interrupts per specific IRQ source, since bootup |
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*/ |
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extern unsigned int kstat_irqs_usr(unsigned int irq); |
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/* |
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* Number of interrupts per cpu, since bootup |
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*/ |
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static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu) |
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{ |
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return kstat_cpu(cpu).irqs_sum; |
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} |
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN |
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extern u64 kcpustat_field(struct kernel_cpustat *kcpustat, |
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enum cpu_usage_stat usage, int cpu); |
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extern void kcpustat_cpu_fetch(struct kernel_cpustat *dst, int cpu); |
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#else |
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static inline u64 kcpustat_field(struct kernel_cpustat *kcpustat, |
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enum cpu_usage_stat usage, int cpu) |
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{ |
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return kcpustat->cpustat[usage]; |
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} |
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static inline void kcpustat_cpu_fetch(struct kernel_cpustat *dst, int cpu) |
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{ |
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*dst = kcpustat_cpu(cpu); |
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} |
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#endif |
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extern void account_user_time(struct task_struct *, u64); |
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extern void account_guest_time(struct task_struct *, u64); |
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extern void account_system_time(struct task_struct *, int, u64); |
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extern void account_system_index_time(struct task_struct *, u64, |
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enum cpu_usage_stat); |
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extern void account_steal_time(u64); |
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extern void account_idle_time(u64); |
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
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static inline void account_process_tick(struct task_struct *tsk, int user) |
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{ |
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vtime_flush(tsk); |
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} |
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#else |
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extern void account_process_tick(struct task_struct *, int user); |
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#endif |
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extern void account_idle_ticks(unsigned long ticks); |
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#endif /* _LINUX_KERNEL_STAT_H */
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