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 #ifndef CONFIG_SPARSE_IRQ
32 unsigned int irqs[NR_IRQS];
36 DECLARE_PER_CPU(struct kernel_stat, kstat);
38 #define kstat_cpu(cpu) per_cpu(kstat, cpu)
39 /* Must have preemption disabled for this to be meaningful. */
40 #define kstat_this_cpu __get_cpu_var(kstat)
42 extern unsigned long long nr_context_switches(void);
44 #ifndef CONFIG_SPARSE_IRQ
45 #define kstat_irqs_this_cpu(irq) \
46 (kstat_this_cpu.irqs[irq])
50 static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
51 struct irq_desc *desc)
53 kstat_this_cpu.irqs[irq]++;
58 #ifndef CONFIG_SPARSE_IRQ
59 static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
61 return kstat_cpu(cpu).irqs[irq];
64 extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
68 * Number of interrupts per specific IRQ source, since bootup
70 static inline unsigned int kstat_irqs(unsigned int irq)
75 for_each_possible_cpu(cpu)
76 sum += kstat_irqs_cpu(irq, cpu);
81 extern unsigned long long task_delta_exec(struct task_struct *);
82 extern void account_user_time(struct task_struct *, cputime_t, cputime_t);
83 extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t);
84 extern void account_steal_time(cputime_t);
85 extern void account_idle_time(cputime_t);
87 extern void account_process_tick(struct task_struct *, int user);
88 extern void account_steal_ticks(unsigned long ticks);
89 extern void account_idle_ticks(unsigned long ticks);
91 #endif /* _LINUX_KERNEL_STAT_H */