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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>
Glauber Costa3292beb2011-11-28 14:45:17 -02009#include <linux/sched.h>
Alan Mayer6859a842008-03-26 16:11:31 -050010#include <asm/irq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <asm/cputime.h>
12
13/*
14 * 'kernel_stat.h' contains the definitions needed for doing
15 * some kernel statistics (CPU usage, context switches ...),
16 * used by rstatd/perfmeter
17 */
18
Glauber Costa3292beb2011-11-28 14:45:17 -020019enum cpu_usage_stat {
20 CPUTIME_USER,
21 CPUTIME_NICE,
22 CPUTIME_SYSTEM,
23 CPUTIME_SOFTIRQ,
24 CPUTIME_IRQ,
25 CPUTIME_IDLE,
26 CPUTIME_IOWAIT,
27 CPUTIME_STEAL,
28 CPUTIME_GUEST,
29 CPUTIME_GUEST_NICE,
30 NR_STATS,
31};
32
33struct kernel_cpustat {
34 u64 cpustat[NR_STATS];
Linus Torvalds1da177e2005-04-16 15:20:36 -070035};
36
37struct kernel_stat {
Yinghai Lud7e51e62009-01-07 15:03:13 -080038#ifndef CONFIG_GENERIC_HARDIRQS
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080039 unsigned int irqs[NR_IRQS];
40#endif
KAMEZAWA Hiroyukif2c66cd2010-10-27 15:34:13 -070041 unsigned long irqs_sum;
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -070042 unsigned int softirqs[NR_SOFTIRQS];
Linus Torvalds1da177e2005-04-16 15:20:36 -070043};
44
45DECLARE_PER_CPU(struct kernel_stat, kstat);
Glauber Costa3292beb2011-11-28 14:45:17 -020046DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat);
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
Linus Torvalds1da177e2005-04-16 15:20:36 -070048/* Must have preemption disabled for this to be meaningful. */
Glauber Costa3292beb2011-11-28 14:45:17 -020049#define kstat_this_cpu (&__get_cpu_var(kstat))
50#define kcpustat_this_cpu (&__get_cpu_var(kernel_cpustat))
51#define kstat_cpu(cpu) per_cpu(kstat, cpu)
52#define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54extern unsigned long long nr_context_switches(void);
55
Yinghai Lud7e51e62009-01-07 15:03:13 -080056#ifndef CONFIG_GENERIC_HARDIRQS
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080057
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +020058struct irq_desc;
Yinghai Lu8c464a42008-08-25 12:41:19 -070059
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +020060static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
61 struct irq_desc *desc)
62{
Eric Dumazet6c9ae002011-01-13 15:45:38 -080063 __this_cpu_inc(kstat.irqs[irq]);
64 __this_cpu_inc(kstat.irqs_sum);
Thomas Gleixnerd6c88a52008-10-15 15:27:23 +020065}
Yinghai Lu8c464a42008-08-25 12:41:19 -070066
Yinghai Lu7f95ec92008-08-19 20:50:09 -070067static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
68{
69 return kstat_cpu(cpu).irqs[irq];
70}
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080071#else
Yinghai Lud52a61c2009-01-22 00:38:56 -080072#include <linux/irq.h>
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080073extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
Eric Dumazet6c9ae002011-01-13 15:45:38 -080074
75#define kstat_incr_irqs_this_cpu(irqno, DESC) \
76do { \
77 __this_cpu_inc(*(DESC)->kstat_irqs); \
78 __this_cpu_inc(kstat.irqs_sum); \
79} while (0)
Yinghai Lud52a61c2009-01-22 00:38:56 -080080
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080081#endif
Yinghai Lu7f95ec92008-08-19 20:50:09 -070082
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -070083static inline void kstat_incr_softirqs_this_cpu(unsigned int irq)
84{
Eric Dumazet6c9ae002011-01-13 15:45:38 -080085 __this_cpu_inc(kstat.softirqs[irq]);
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -070086}
87
88static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
89{
90 return kstat_cpu(cpu).softirqs[irq];
91}
92
Linus Torvalds1da177e2005-04-16 15:20:36 -070093/*
94 * Number of interrupts per specific IRQ source, since bootup
95 */
KAMEZAWA Hiroyuki478735e32010-10-27 15:34:15 -070096#ifndef CONFIG_GENERIC_HARDIRQS
Yinghai Lu7f95ec92008-08-19 20:50:09 -070097static inline unsigned int kstat_irqs(unsigned int irq)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098{
Yinghai Lu7f95ec92008-08-19 20:50:09 -070099 unsigned int sum = 0;
100 int cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
KAMEZAWA Hiroyuki0a945022006-03-28 01:56:37 -0800102 for_each_possible_cpu(cpu)
Yinghai Lu7f95ec92008-08-19 20:50:09 -0700103 sum += kstat_irqs_cpu(irq, cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
105 return sum;
106}
KAMEZAWA Hiroyuki478735e32010-10-27 15:34:15 -0700107#else
108extern unsigned int kstat_irqs(unsigned int irq);
109#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
KAMEZAWA Hiroyukif2c66cd2010-10-27 15:34:13 -0700111/*
112 * Number of interrupts per cpu, since bootup
113 */
114static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
115{
116 return kstat_cpu(cpu).irqs_sum;
117}
Ingo Molnaraa9c4c02008-12-17 14:10:57 +0100118
119/*
120 * Lock/unlock the current runqueue - to extract task statistics:
121 */
Frank Mayharbb34d922008-09-12 09:54:39 -0700122extern unsigned long long task_delta_exec(struct task_struct *);
Ingo Molnaraa9c4c02008-12-17 14:10:57 +0100123
Martin Schwidefsky457533a2008-12-31 15:11:37 +0100124extern void account_user_time(struct task_struct *, cputime_t, cputime_t);
125extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t);
Martin Schwidefsky79741dd2008-12-31 15:11:38 +0100126extern void account_steal_time(cputime_t);
127extern void account_idle_time(cputime_t);
128
129extern void account_process_tick(struct task_struct *, int user);
130extern void account_steal_ticks(unsigned long ticks);
131extern void account_idle_ticks(unsigned long ticks);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132
Frederic Weisbeckerbaa36042012-06-18 17:54:14 +0200133#ifdef CONFIG_VIRT_CPU_ACCOUNTING
Frederic Weisbeckerbf9fae92012-09-08 15:23:11 +0200134extern void vtime_task_switch(struct task_struct *prev);
Frederic Weisbeckera7e1a9e2012-09-08 16:14:02 +0200135extern void vtime_account_system(struct task_struct *tsk);
136extern void vtime_account_idle(struct task_struct *tsk);
Frederic Weisbeckerbaa36042012-06-18 17:54:14 +0200137#else
Frederic Weisbeckerbf9fae92012-09-08 15:23:11 +0200138static inline void vtime_task_switch(struct task_struct *prev) { }
Frederic Weisbeckerbaa36042012-06-18 17:54:14 +0200139#endif
140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141#endif /* _LINUX_KERNEL_STAT_H */