1#ifndef _LINUX_KERNEL_STAT_H 2#define _LINUX_KERNEL_STAT_H 3 4#include <linux/smp.h> 5#include <linux/threads.h> 6#include <linux/percpu.h> 7#include <linux/cpumask.h> 8#include <linux/interrupt.h> 9#include <linux/sched.h> 10#include <linux/vtime.h> 11#include <asm/irq.h> 12#include <linux/cputime.h> 13 14/* 15 * 'kernel_stat.h' contains the definitions needed for doing 16 * some kernel statistics (CPU usage, context switches ...), 17 * used by rstatd/perfmeter 18 */ 19 20enum cpu_usage_stat { 21 CPUTIME_USER, 22 CPUTIME_NICE, 23 CPUTIME_SYSTEM, 24 CPUTIME_SOFTIRQ, 25 CPUTIME_IRQ, 26 CPUTIME_IDLE, 27 CPUTIME_IOWAIT, 28 CPUTIME_STEAL, 29 CPUTIME_GUEST, 30 CPUTIME_GUEST_NICE, 31 NR_STATS, 32}; 33 34struct kernel_cpustat { 35 u64 cpustat[NR_STATS]; 36}; 37 38struct kernel_stat { 39 unsigned long irqs_sum; 40 unsigned int softirqs[NR_SOFTIRQS]; 41}; 42 43DECLARE_PER_CPU(struct kernel_stat, kstat); 44DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat); 45 46/* Must have preemption disabled for this to be meaningful. */ 47#define kstat_this_cpu this_cpu_ptr(&kstat) 48#define kcpustat_this_cpu this_cpu_ptr(&kernel_cpustat) 49#define kstat_cpu(cpu) per_cpu(kstat, cpu) 50#define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu) 51 52extern unsigned long long nr_context_switches(void); 53 54extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu); 55extern void kstat_incr_irq_this_cpu(unsigned int irq); 56 57static inline void kstat_incr_softirqs_this_cpu(unsigned int irq) 58{ 59 __this_cpu_inc(kstat.softirqs[irq]); 60} 61 62static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu) 63{ 64 return kstat_cpu(cpu).softirqs[irq]; 65} 66 67/* 68 * Number of interrupts per specific IRQ source, since bootup 69 */ 70extern unsigned int kstat_irqs(unsigned int irq); 71extern unsigned int kstat_irqs_usr(unsigned int irq); 72 73/* 74 * Number of interrupts per cpu, since bootup 75 */ 76static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu) 77{ 78 return kstat_cpu(cpu).irqs_sum; 79} 80 81extern void account_user_time(struct task_struct *, cputime_t, cputime_t); 82extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t); 83extern void account_steal_time(cputime_t); 84extern void account_idle_time(cputime_t); 85 86#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE 87static inline void account_process_tick(struct task_struct *tsk, int user) 88{ 89 vtime_account_user(tsk); 90} 91#else 92extern void account_process_tick(struct task_struct *, int user); 93#endif 94 95extern void account_steal_ticks(unsigned long ticks); 96extern void account_idle_ticks(unsigned long ticks); 97 98#endif /* _LINUX_KERNEL_STAT_H */ 99