#ifndef _LINUX_KERNEL_STAT_H #define _LINUX_KERNEL_STAT_H #include <asm/irq.h> #include <linux/smp.h> #include <linux/threads.h> #include <linux/percpu.h> #include <linux/cpumask.h> #include <asm/cputime.h> /* * 'kernel_stat.h' contains the definitions needed for doing * some kernel statistics (CPU usage, context switches ...), * used by rstatd/perfmeter */ struct cpu_usage_stat { cputime64_t user; cputime64_t nice; cputime64_t system; cputime64_t softirq; cputime64_t irq; cputime64_t idle; cputime64_t iowait; cputime64_t steal; cputime64_t guest; }; struct kernel_stat { struct cpu_usage_stat cpustat; unsigned int irqs[NR_IRQS]; }; DECLARE_PER_CPU(struct kernel_stat, kstat); #define kstat_cpu(cpu) per_cpu(kstat, cpu) /* Must have preemption disabled for this to be meaningful. */ #define kstat_this_cpu __get_cpu_var(kstat) extern unsigned long long nr_context_switches(void); /* * Number of interrupts per specific IRQ source, since bootup */ static inline int kstat_irqs(int irq) { int cpu, sum = 0; for_each_possible_cpu(cpu) sum += kstat_cpu(cpu).irqs[irq]; return sum; } extern void account_user_time(struct task_struct *, cputime_t); extern void account_system_time(struct task_struct *, int, cputime_t); extern void account_steal_time(struct task_struct *, cputime_t); #endif /* _LINUX_KERNEL_STAT_H */