1 #ifndef _LINUX_KERNEL_STAT_H
2 #define _LINUX_KERNEL_STAT_H
5 #include <linux/threads.h>
6 #include <linux/percpu.h>
7 #include <linux/cpumask.h>
9 #include <asm/cputime.h>
12 * 'kernel_stat.h' contains the definitions needed for doing
13 * some kernel statistics (CPU usage, context switches ...),
14 * used by rstatd/perfmeter
17 struct cpu_usage_stat {
30 struct cpu_usage_stat cpustat;
31 #ifdef CONFIG_HAVE_DYN_ARRAY
34 unsigned int irqs[NR_IRQS];
38 DECLARE_PER_CPU(struct kernel_stat, kstat);
40 #define kstat_cpu(cpu) per_cpu(kstat, cpu)
41 /* Must have preemption disabled for this to be meaningful. */
42 #define kstat_this_cpu __get_cpu_var(kstat)
44 extern unsigned long long nr_context_switches(void);
47 * Number of interrupts per specific IRQ source, since bootup
49 static inline int kstat_irqs(int irq)
53 for_each_possible_cpu(cpu)
54 sum += kstat_cpu(cpu).irqs[irq];
59 extern void account_user_time(struct task_struct *, cputime_t);
60 extern void account_user_time_scaled(struct task_struct *, cputime_t);
61 extern void account_system_time(struct task_struct *, int, cputime_t);
62 extern void account_system_time_scaled(struct task_struct *, cputime_t);
63 extern void account_steal_time(struct task_struct *, cputime_t);
65 #endif /* _LINUX_KERNEL_STAT_H */