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>
8 #include <linux/interrupt.h>
10 #include <asm/cputime.h>
13 * 'kernel_stat.h' contains the definitions needed for doing
14 * some kernel statistics (CPU usage, context switches ...),
15 * used by rstatd/perfmeter
18 struct cpu_usage_stat {
28 cputime64_t guest_nice;
32 struct cpu_usage_stat cpustat;
33 #ifndef CONFIG_GENERIC_HARDIRQS
34 unsigned int irqs[NR_IRQS];
36 unsigned long irqs_sum;
37 unsigned int softirqs[NR_SOFTIRQS];
40 DECLARE_PER_CPU(struct kernel_stat, kstat);
42 #define kstat_cpu(cpu) per_cpu(kstat, cpu)
43 /* Must have preemption disabled for this to be meaningful. */
44 #define kstat_this_cpu __get_cpu_var(kstat)
46 extern unsigned long long nr_context_switches(void);
48 #ifndef CONFIG_GENERIC_HARDIRQS
49 #define kstat_irqs_this_cpu(irq) \
50 (kstat_this_cpu.irqs[irq])
54 static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
55 struct irq_desc *desc)
57 kstat_this_cpu.irqs[irq]++;
58 kstat_this_cpu.irqs_sum++;
61 static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
63 return kstat_cpu(cpu).irqs[irq];
66 #include <linux/irq.h>
67 extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
68 #define kstat_irqs_this_cpu(DESC) \
69 ((DESC)->kstat_irqs[smp_processor_id()])
70 #define kstat_incr_irqs_this_cpu(irqno, DESC) do {\
71 ((DESC)->kstat_irqs[smp_processor_id()]++);\
72 kstat_this_cpu.irqs_sum++; } while (0)
76 static inline void kstat_incr_softirqs_this_cpu(unsigned int irq)
78 kstat_this_cpu.softirqs[irq]++;
81 static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
83 return kstat_cpu(cpu).softirqs[irq];
87 * Number of interrupts per specific IRQ source, since bootup
89 #ifndef CONFIG_GENERIC_HARDIRQS
90 static inline unsigned int kstat_irqs(unsigned int irq)
95 for_each_possible_cpu(cpu)
96 sum += kstat_irqs_cpu(irq, cpu);
101 extern unsigned int kstat_irqs(unsigned int irq);
105 * Number of interrupts per cpu, since bootup
107 static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
109 return kstat_cpu(cpu).irqs_sum;
113 * Lock/unlock the current runqueue - to extract task statistics:
115 extern unsigned long long task_delta_exec(struct task_struct *);
117 extern void account_user_time(struct task_struct *, cputime_t, cputime_t);
118 extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t);
119 extern void account_steal_time(cputime_t);
120 extern void account_idle_time(cputime_t);
122 extern void account_process_tick(struct task_struct *, int user);
123 extern void account_steal_ticks(unsigned long ticks);
124 extern void account_idle_ticks(unsigned long ticks);
126 #endif /* _LINUX_KERNEL_STAT_H */