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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _LINUX_KERNEL_STAT_H
2#define _LINUX_KERNEL_STAT_H
3
Linus Torvalds1da177e2005-04-16 15:20:36 -07004#include <linux/smp.h>
5#include <linux/threads.h>
6#include <linux/percpu.h>
Ingo Molnar28ef3582005-11-07 00:59:29 -08007#include <linux/cpumask.h>
Alan Mayer6859a842008-03-26 16:11:31 -05008#include <asm/irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#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
17struct 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;
Laurent Vivier5e84cfd2007-10-15 17:00:19 +020026 cputime64_t guest;
Linus Torvalds1da177e2005-04-16 15:20:36 -070027};
28
29struct kernel_stat {
30 struct cpu_usage_stat cpustat;
Yinghai Lud7e51e62009-01-07 15:03:13 -080031#ifndef CONFIG_GENERIC_HARDIRQS
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080032 unsigned int irqs[NR_IRQS];
33#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070034};
35
36DECLARE_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
42extern unsigned long long nr_context_switches(void);
43
Yinghai Lud7e51e62009-01-07 15:03:13 -080044#ifndef CONFIG_GENERIC_HARDIRQS
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080045#define kstat_irqs_this_cpu(irq) \
46 (kstat_this_cpu.irqs[irq])
47
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +020048struct irq_desc;
Yinghai Lu8c464a42008-08-25 12:41:19 -070049
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +020050static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
51 struct irq_desc *desc)
52{
53 kstat_this_cpu.irqs[irq]++;
54}
Yinghai Lu8c464a42008-08-25 12:41:19 -070055
Yinghai Lu7f95ec92008-08-19 20:50:09 -070056static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
57{
58 return kstat_cpu(cpu).irqs[irq];
59}
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080060#else
Yinghai Lud52a61c2009-01-22 00:38:56 -080061#include <linux/irq.h>
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080062extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
Yinghai Lud52a61c2009-01-22 00:38:56 -080063#define kstat_irqs_this_cpu(DESC) \
64 ((DESC)->kstat_irqs[smp_processor_id()])
65#define kstat_incr_irqs_this_cpu(irqno, DESC) \
66 ((DESC)->kstat_irqs[smp_processor_id()]++)
67
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080068#endif
Yinghai Lu7f95ec92008-08-19 20:50:09 -070069
Linus Torvalds1da177e2005-04-16 15:20:36 -070070/*
71 * Number of interrupts per specific IRQ source, since bootup
72 */
Yinghai Lu7f95ec92008-08-19 20:50:09 -070073static inline unsigned int kstat_irqs(unsigned int irq)
Linus Torvalds1da177e2005-04-16 15:20:36 -070074{
Yinghai Lu7f95ec92008-08-19 20:50:09 -070075 unsigned int sum = 0;
76 int cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
KAMEZAWA Hiroyuki0a945022006-03-28 01:56:37 -080078 for_each_possible_cpu(cpu)
Yinghai Lu7f95ec92008-08-19 20:50:09 -070079 sum += kstat_irqs_cpu(irq, cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
81 return sum;
82}
83
Frank Mayharbb34d922008-09-12 09:54:39 -070084extern unsigned long long task_delta_exec(struct task_struct *);
Martin Schwidefsky457533a2008-12-31 15:11:37 +010085extern void account_user_time(struct task_struct *, cputime_t, cputime_t);
86extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t);
Martin Schwidefsky79741dd2008-12-31 15:11:38 +010087extern void account_steal_time(cputime_t);
88extern void account_idle_time(cputime_t);
89
90extern void account_process_tick(struct task_struct *, int user);
91extern void account_steal_ticks(unsigned long ticks);
92extern void account_idle_ticks(unsigned long ticks);
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
94#endif /* _LINUX_KERNEL_STAT_H */