1 #ifndef _LINUX_KERNEL_STAT_H
2 #define _LINUX_KERNEL_STAT_H
3
4 #include <linux/smp.h>
5 #include <linux/threads.h>
6 #include <linux/percpu.h>
7 #include <linux/cpumask.h>
8 #include <asm/irq.h>
9 #include <asm/cputime.h>
10
11 /*
12 * 'kernel_stat.h' contains the definitions needed for doing
13 * some kernel statistics (CPU usage, context switches ...),
14 * used by rstatd/perfmeter
15 */
16
17 struct cpu_usage_stat {
18 cputime64_t user;
19 cputime64_t nice;
20 cputime64_t system;
21 cputime64_t softirq;
22 cputime64_t irq;
23 cputime64_t idle;
24 cputime64_t iowait;
25 cputime64_t steal;
26 cputime64_t guest;
27 };
28
29 struct kernel_stat {
30 struct cpu_usage_stat cpustat;
31 #ifndef CONFIG_SPARSE_IRQ
32 unsigned int irqs[NR_IRQS];
33 #endif
34 };
35
36 DECLARE_PER_CPU(struct kernel_stat, kstat);
37
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)
41
42 extern unsigned long long nr_context_switches(void);
43
44 #ifndef CONFIG_SPARSE_IRQ
45 #define kstat_irqs_this_cpu(irq) \
46 (kstat_this_cpu.irqs[irq])
47
48 struct irq_desc;
49
kstat_incr_irqs_this_cpu(unsigned int irq,struct irq_desc * desc)50 static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
51 struct irq_desc *desc)
52 {
53 kstat_this_cpu.irqs[irq]++;
54 }
55 #endif
56
57
58 #ifndef CONFIG_SPARSE_IRQ
kstat_irqs_cpu(unsigned int irq,int cpu)59 static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
60 {
61 return kstat_cpu(cpu).irqs[irq];
62 }
63 #else
64 extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
65 #endif
66
67 /*
68 * Number of interrupts per specific IRQ source, since bootup
69 */
kstat_irqs(unsigned int irq)70 static inline unsigned int kstat_irqs(unsigned int irq)
71 {
72 unsigned int sum = 0;
73 int cpu;
74
75 for_each_possible_cpu(cpu)
76 sum += kstat_irqs_cpu(irq, cpu);
77
78 return sum;
79 }
80
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);
86
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);
90
91 #endif /* _LINUX_KERNEL_STAT_H */
92