#ifndef _LINUX_KERNEL_STAT_H #define _LINUX_KERNEL_STAT_H #include <linux/smp.h> #include <linux/threads.h> #include <linux/percpu.h> #include <linux/cpumask.h> #include <linux/interrupt.h> #include <asm/irq.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; #ifndef CONFIG_GENERIC_HARDIRQS unsigned int irqs[NR_IRQS]; #endif unsigned int softirqs[NR_SOFTIRQS]; }; 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); #ifndef CONFIG_GENERIC_HARDIRQS #define kstat_irqs_this_cpu(irq) \ (kstat_this_cpu.irqs[irq]) struct irq_desc; static inline void kstat_incr_irqs_this_cpu(unsigned int irq, struct irq_desc *desc) { kstat_this_cpu.irqs[irq]++; } static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu) { return kstat_cpu(cpu).irqs[irq]; } #else #include <linux/irq.h> extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); #define kstat_irqs_this_cpu(DESC) \ ((DESC)->kstat_irqs[smp_processor_id()]) #define kstat_incr_irqs_this_cpu(irqno, DESC) \ ((DESC)->kstat_irqs[smp_processor_id()]++) #endif static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) { kstat_this_cpu.softirqs[irq]++; } static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) { return kstat_cpu(cpu).softirqs[irq]; } /* * Number of interrupts per specific IRQ source, since bootup */ static inline unsigned int kstat_irqs(unsigned int irq) { unsigned int sum = 0; int cpu; for_each_possible_cpu(cpu) sum += kstat_irqs_cpu(irq, cpu); return sum; } /* * Lock/unlock the current runqueue - to extract task statistics: */ extern unsigned long long task_delta_exec(struct task_struct *); extern void account_user_time(struct task_struct *, cputime_t, cputime_t); extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); extern void account_steal_time(cputime_t); extern void account_idle_time(cputime_t); extern void account_process_tick(struct task_struct *, int user); extern void account_steal_ticks(unsigned long ticks); extern void account_idle_ticks(unsigned long ticks); #endif /* _LINUX_KERNEL_STAT_H */