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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>
Frederic Weisbeckerdcbf8322012-10-05 23:07:19 +020010#include <linux/vtime.h>
Alan Mayer6859a842008-03-26 16:11:31 -050011#include <asm/irq.h>
Frederic Weisbeckerbfc3f022014-03-05 16:33:42 +010012#include <linux/cputime.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013
14/*
15 * 'kernel_stat.h' contains the definitions needed for doing
16 * some kernel statistics (CPU usage, context switches ...),
17 * used by rstatd/perfmeter
18 */
19
Glauber Costa3292beb2011-11-28 14:45:17 -020020enum cpu_usage_stat {
21 CPUTIME_USER,
22 CPUTIME_NICE,
23 CPUTIME_SYSTEM,
24 CPUTIME_SOFTIRQ,
25 CPUTIME_IRQ,
26 CPUTIME_IDLE,
27 CPUTIME_IOWAIT,
28 CPUTIME_STEAL,
29 CPUTIME_GUEST,
30 CPUTIME_GUEST_NICE,
31 NR_STATS,
32};
33
34struct kernel_cpustat {
35 u64 cpustat[NR_STATS];
Linus Torvalds1da177e2005-04-16 15:20:36 -070036};
37
38struct kernel_stat {
KAMEZAWA Hiroyukif2c66cd2010-10-27 15:34:13 -070039 unsigned long irqs_sum;
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -070040 unsigned int softirqs[NR_SOFTIRQS];
Linus Torvalds1da177e2005-04-16 15:20:36 -070041};
42
43DECLARE_PER_CPU(struct kernel_stat, kstat);
Glauber Costa3292beb2011-11-28 14:45:17 -020044DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat);
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
Linus Torvalds1da177e2005-04-16 15:20:36 -070046/* Must have preemption disabled for this to be meaningful. */
Christoph Lameter4a32fea2014-08-17 12:30:27 -050047#define kstat_this_cpu this_cpu_ptr(&kstat)
48#define kcpustat_this_cpu this_cpu_ptr(&kernel_cpustat)
Glauber Costa3292beb2011-11-28 14:45:17 -020049#define kstat_cpu(cpu) per_cpu(kstat, cpu)
50#define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
52extern unsigned long long nr_context_switches(void);
53
Yinghai Lu0b8f1ef2008-12-05 18:58:31 -080054extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
Thomas Gleixner792d0012014-02-23 21:40:14 +000055extern void kstat_incr_irq_this_cpu(unsigned int irq);
Yinghai Lud52a61c2009-01-22 00:38:56 -080056
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -070057static inline void kstat_incr_softirqs_this_cpu(unsigned int irq)
58{
Eric Dumazet6c9ae002011-01-13 15:45:38 -080059 __this_cpu_inc(kstat.softirqs[irq]);
Keika Kobayashiaa0ce5b2009-06-17 16:25:52 -070060}
61
62static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
63{
64 return kstat_cpu(cpu).softirqs[irq];
65}
66
Linus Torvalds1da177e2005-04-16 15:20:36 -070067/*
68 * Number of interrupts per specific IRQ source, since bootup
69 */
KAMEZAWA Hiroyuki478735e32010-10-27 15:34:15 -070070extern unsigned int kstat_irqs(unsigned int irq);
Thomas Gleixnerc291ee62014-12-11 23:01:41 +010071extern unsigned int kstat_irqs_usr(unsigned int irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
KAMEZAWA Hiroyukif2c66cd2010-10-27 15:34:13 -070073/*
74 * Number of interrupts per cpu, since bootup
75 */
76static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
77{
78 return kstat_cpu(cpu).irqs_sum;
79}
Ingo Molnaraa9c4c02008-12-17 14:10:57 +010080
Martin Schwidefsky457533a2008-12-31 15:11:37 +010081extern void account_user_time(struct task_struct *, cputime_t, cputime_t);
82extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t);
Martin Schwidefsky79741dd2008-12-31 15:11:38 +010083extern void account_steal_time(cputime_t);
84extern void account_idle_time(cputime_t);
85
Frederic Weisbeckerabf917c2012-07-25 07:56:04 +020086#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
Frederic Weisbeckerbcebdf82012-11-13 23:51:06 +010087static inline void account_process_tick(struct task_struct *tsk, int user)
88{
89 vtime_account_user(tsk);
90}
91#else
Martin Schwidefsky79741dd2008-12-31 15:11:38 +010092extern void account_process_tick(struct task_struct *, int user);
Frederic Weisbeckerbcebdf82012-11-13 23:51:06 +010093#endif
94
Martin Schwidefsky79741dd2008-12-31 15:11:38 +010095extern void account_steal_ticks(unsigned long ticks);
96extern void account_idle_ticks(unsigned long ticks);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097
Linus Torvalds1da177e2005-04-16 15:20:36 -070098#endif /* _LINUX_KERNEL_STAT_H */