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
52 static inline void kstat_incr_irqs_this_cpu(unsigned int irq
,
53 struct irq_desc
*desc
)
55 __this_cpu_inc(kstat
.irqs
[irq
]);
56 __this_cpu_inc(kstat
.irqs_sum
);
59 static inline unsigned int kstat_irqs_cpu(unsigned int irq
, int cpu
)
61 return kstat_cpu(cpu
).irqs
[irq
];
64 #include <linux/irq.h>
65 extern unsigned int kstat_irqs_cpu(unsigned int irq
, int cpu
);
67 #define kstat_incr_irqs_this_cpu(irqno, DESC) \
69 __this_cpu_inc(*(DESC)->kstat_irqs); \
70 __this_cpu_inc(kstat.irqs_sum); \
75 static inline void kstat_incr_softirqs_this_cpu(unsigned int irq
)
77 __this_cpu_inc(kstat
.softirqs
[irq
]);
80 static inline unsigned int kstat_softirqs_cpu(unsigned int irq
, int cpu
)
82 return kstat_cpu(cpu
).softirqs
[irq
];
86 * Number of interrupts per specific IRQ source, since bootup
88 #ifndef CONFIG_GENERIC_HARDIRQS
89 static inline unsigned int kstat_irqs(unsigned int irq
)
94 for_each_possible_cpu(cpu
)
95 sum
+= kstat_irqs_cpu(irq
, cpu
);
100 extern unsigned int kstat_irqs(unsigned int irq
);
104 * Number of interrupts per cpu, since bootup
106 static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu
)
108 return kstat_cpu(cpu
).irqs_sum
;
112 * Lock/unlock the current runqueue - to extract task statistics:
114 extern unsigned long long task_delta_exec(struct task_struct
*);
116 extern void account_user_time(struct task_struct
*, cputime_t
, cputime_t
);
117 extern void account_system_time(struct task_struct
*, int, cputime_t
, cputime_t
);
118 extern void account_steal_time(cputime_t
);
119 extern void account_idle_time(cputime_t
);
121 extern void account_process_tick(struct task_struct
*, int user
);
122 extern void account_steal_ticks(unsigned long ticks
);
123 extern void account_idle_ticks(unsigned long ticks
);
125 #endif /* _LINUX_KERNEL_STAT_H */
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