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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/linux/kernel_stat.h
1 #ifndef _LINUX_KERNEL_STAT_H
2 #define _LINUX_KERNEL_STAT_H
6 #include <linux/threads.h>
7 #include <linux/percpu.h>
8 #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
{
29 struct cpu_usage_stat cpustat
;
30 unsigned int irqs
[NR_IRQS
];
33 DECLARE_PER_CPU(struct kernel_stat
, kstat
);
35 #define kstat_cpu(cpu) per_cpu(kstat, cpu)
36 /* Must have preemption disabled for this to be meaningful. */
37 #define kstat_this_cpu __get_cpu_var(kstat)
39 extern unsigned long long nr_context_switches(void);
42 * Number of interrupts per specific IRQ source, since bootup
44 static inline int kstat_irqs(int irq
)
48 for_each_possible_cpu(cpu
)
49 sum
+= kstat_cpu(cpu
).irqs
[irq
];
54 extern void account_user_time(struct task_struct
*, cputime_t
);
55 extern void account_system_time(struct task_struct
*, int, cputime_t
);
56 extern void account_steal_time(struct task_struct
*, cputime_t
);
58 #endif /* _LINUX_KERNEL_STAT_H */