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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>
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -07008#include <linux/interrupt.h>
Alan Mayer6859a842008-03-26 16:11:31 -05009#include <asm/irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#include <asm/cputime.h>
11
12/*
13 * 'kernel_stat.h' contains the definitions needed for doing
14 * some kernel statistics (CPU usage, context switches ...),
15 * used by rstatd/perfmeter
16 */
17
18struct cpu_usage_stat {
19 cputime64_t user;
20 cputime64_t nice;
21 cputime64_t system;
22 cputime64_t softirq;
23 cputime64_t irq;
24 cputime64_t idle;
25 cputime64_t iowait;
26 cputime64_t steal;
Laurent Vivier5e84cfd2007-10-15 17:00:19 +020027 cputime64_t guest;
Ryota Ozakice0e7b22009-10-24 01:20:10 +090028 cputime64_t guest_nice;
Linus Torvalds1da177e2005-04-16 15:20:36 -070029};
30
31struct kernel_stat {
32 struct cpu_usage_stat cpustat;
Yinghai Lud7e51e62009-01-07 15:03:13 -080033#ifndef CONFIG_GENERIC_HARDIRQS
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080034 unsigned int irqs[NR_IRQS];
35#endif
KAMEZAWA Hiroyukif2c66cd2010-10-27 15:34:13 -070036 unsigned long irqs_sum;
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -070037 unsigned int softirqs[NR_SOFTIRQS];
Linus Torvalds1da177e2005-04-16 15:20:36 -070038};
39
40DECLARE_PER_CPU(struct kernel_stat, kstat);
41
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)
45
46extern unsigned long long nr_context_switches(void);
47
Yinghai Lud7e51e62009-01-07 15:03:13 -080048#ifndef CONFIG_GENERIC_HARDIRQS
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080049
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +020050struct irq_desc;
Yinghai Lu8c464a42008-08-25 12:41:19 -070051
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +020052static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
53 struct irq_desc *desc)
54{
Eric Dumazet6c9ae002011-01-13 15:45:38 -080055 __this_cpu_inc(kstat.irqs[irq]);
56 __this_cpu_inc(kstat.irqs_sum);
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +020057}
Yinghai Lu8c464a42008-08-25 12:41:19 -070058
Yinghai Lu7f95ec92008-08-19 20:50:09 -070059static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
60{
61 return kstat_cpu(cpu).irqs[irq];
62}
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080063#else
Yinghai Lud52a61c2009-01-22 00:38:56 -080064#include <linux/irq.h>
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080065extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
Eric Dumazet6c9ae002011-01-13 15:45:38 -080066
67#define kstat_incr_irqs_this_cpu(irqno, DESC) \
68do { \
69 __this_cpu_inc(*(DESC)->kstat_irqs); \
70 __this_cpu_inc(kstat.irqs_sum); \
71} while (0)
Yinghai Lud52a61c2009-01-22 00:38:56 -080072
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080073#endif
Yinghai Lu7f95ec92008-08-19 20:50:09 -070074
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -070075static inline void kstat_incr_softirqs_this_cpu(unsigned int irq)
76{
Eric Dumazet6c9ae002011-01-13 15:45:38 -080077 __this_cpu_inc(kstat.softirqs[irq]);
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -070078}
79
80static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
81{
82 return kstat_cpu(cpu).softirqs[irq];
83}
84
Linus Torvalds1da177e2005-04-16 15:20:36 -070085/*
86 * Number of interrupts per specific IRQ source, since bootup
87 */
KAMEZAWA Hiroyuki478735e32010-10-27 15:34:15 -070088#ifndef CONFIG_GENERIC_HARDIRQS
Yinghai Lu7f95ec92008-08-19 20:50:09 -070089static inline unsigned int kstat_irqs(unsigned int irq)
Linus Torvalds1da177e2005-04-16 15:20:36 -070090{
Yinghai Lu7f95ec92008-08-19 20:50:09 -070091 unsigned int sum = 0;
92 int cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
KAMEZAWA Hiroyuki0a945022006-03-28 01:56:37 -080094 for_each_possible_cpu(cpu)
Yinghai Lu7f95ec92008-08-19 20:50:09 -070095 sum += kstat_irqs_cpu(irq, cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -070096
97 return sum;
98}
KAMEZAWA Hiroyuki478735e32010-10-27 15:34:15 -070099#else
100extern unsigned int kstat_irqs(unsigned int irq);
101#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102
KAMEZAWA Hiroyukif2c66cd2010-10-27 15:34:13 -0700103/*
104 * Number of interrupts per cpu, since bootup
105 */
106static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
107{
108 return kstat_cpu(cpu).irqs_sum;
109}
Ingo Molnaraa9c4c02008-12-17 14:10:57 +0100110
111/*
112 * Lock/unlock the current runqueue - to extract task statistics:
113 */
Frank Mayharbb34d922008-09-12 09:54:39 -0700114extern unsigned long long task_delta_exec(struct task_struct *);
Ingo Molnaraa9c4c02008-12-17 14:10:57 +0100115
Martin Schwidefsky457533a2008-12-31 15:11:37 +0100116extern void account_user_time(struct task_struct *, cputime_t, cputime_t);
117extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t);
Martin Schwidefsky79741dd2008-12-31 15:11:38 +0100118extern void account_steal_time(cputime_t);
119extern void account_idle_time(cputime_t);
120
121extern void account_process_tick(struct task_struct *, int user);
122extern void account_steal_ticks(unsigned long ticks);
123extern void account_idle_ticks(unsigned long ticks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124
125#endif /* _LINUX_KERNEL_STAT_H */