[mirror_ubuntu-zesty-kernel.git] / include / linux / kernel_stat.h

#ifndef _LINUX_KERNEL_STAT_H
#define _LINUX_KERNEL_STAT_H

#include <linux/smp.h>
#include <linux/threads.h>
#include <linux/percpu.h>
#include <linux/cpumask.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/vtime.h>
#include <asm/irq.h>
#include <linux/cputime.h>

/*
 * 'kernel_stat.h' contains the definitions needed for doing
 * some kernel statistics (CPU usage, context switches ...),
 * used by rstatd/perfmeter
 */

enum cpu_usage_stat {
	CPUTIME_USER,
	CPUTIME_NICE,
	CPUTIME_SYSTEM,
	CPUTIME_SOFTIRQ,
	CPUTIME_IRQ,
	CPUTIME_IDLE,
	CPUTIME_IOWAIT,
	CPUTIME_STEAL,
	CPUTIME_GUEST,
	CPUTIME_GUEST_NICE,
	NR_STATS,
};

struct kernel_cpustat {
	u64 cpustat[NR_STATS];
};

struct kernel_stat {
	unsigned long irqs_sum;
	unsigned int softirqs[NR_SOFTIRQS];
};

DECLARE_PER_CPU(struct kernel_stat, kstat);
DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat);

/* Must have preemption disabled for this to be meaningful. */
#define kstat_this_cpu (&__get_cpu_var(kstat))
#define kcpustat_this_cpu (&__get_cpu_var(kernel_cpustat))
#define kstat_cpu(cpu) per_cpu(kstat, cpu)
#define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu)

extern unsigned long long nr_context_switches(void);

extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
extern void kstat_incr_irq_this_cpu(unsigned int irq);

static inline void kstat_incr_softirqs_this_cpu(unsigned int irq)
{
	__this_cpu_inc(kstat.softirqs[irq]);
}

static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
{
       return kstat_cpu(cpu).softirqs[irq];
}

/*
 * Number of interrupts per specific IRQ source, since bootup
 */
extern unsigned int kstat_irqs(unsigned int irq);

/*
 * Number of interrupts per cpu, since bootup
 */
static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
{
	return kstat_cpu(cpu).irqs_sum;
}

/*
 * Lock/unlock the current runqueue - to extract task statistics:
 */
extern unsigned long long task_delta_exec(struct task_struct *);

extern void account_user_time(struct task_struct *, cputime_t, cputime_t);
extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t);
extern void account_steal_time(cputime_t);
extern void account_idle_time(cputime_t);

#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
static inline void account_process_tick(struct task_struct *tsk, int user)
{
	vtime_account_user(tsk);
}
#else
extern void account_process_tick(struct task_struct *, int user);
#endif

extern void account_steal_ticks(unsigned long ticks);
extern void account_idle_ticks(unsigned long ticks);

#endif /* _LINUX_KERNEL_STAT_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_KERNEL_STAT_H
	2	#define _LINUX_KERNEL_STAT_H
	3
1da177e4 LT	4	#include <linux/smp.h>
	5	#include <linux/threads.h>
	6	#include <linux/percpu.h>
28ef3584	7	#include <linux/cpumask.h>
aa0ce5bb	8	#include <linux/interrupt.h>
3292beb3	9	#include <linux/sched.h>
dcbf832e	10	#include <linux/vtime.h>
6859a840	11	#include <asm/irq.h>
bfc3f028	12	#include <linux/cputime.h>
1da177e4 LT	13
	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
3292beb3 GC	20	enum 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
	34	struct kernel_cpustat {
	35	u64 cpustat[NR_STATS];
1da177e4 LT	36	};
	37
	38	struct kernel_stat {
f2c66cd8	39	unsigned long irqs_sum;
aa0ce5bb	40	unsigned int softirqs[NR_SOFTIRQS];
1da177e4 LT	41	};
	42
	43	DECLARE_PER_CPU(struct kernel_stat, kstat);
3292beb3	44	DECLARE_PER_CPU(struct kernel_cpustat, kernel_cpustat);
1da177e4	45
1da177e4	46	/* Must have preemption disabled for this to be meaningful. */
3292beb3 GC	47	#define kstat_this_cpu (&__get_cpu_var(kstat))
	48	#define kcpustat_this_cpu (&__get_cpu_var(kernel_cpustat))
	49	#define kstat_cpu(cpu) per_cpu(kstat, cpu)
	50	#define kcpustat_cpu(cpu) per_cpu(kernel_cpustat, cpu)
1da177e4 LT	51
	52	extern unsigned long long nr_context_switches(void);
	53
0b8f1efa	54	extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
792d0018	55	extern void kstat_incr_irq_this_cpu(unsigned int irq);
d52a61c0	56
aa0ce5bb KK	57	static inline void kstat_incr_softirqs_this_cpu(unsigned int irq)
aa0ce5bb KK	58	{
6c9ae009	59	__this_cpu_inc(kstat.softirqs[irq]);
aa0ce5bb KK	60	}
	61
	62	static inline unsigned int kstat_softirqs_cpu(unsigned int irq, int cpu)
	63	{
	64	return kstat_cpu(cpu).softirqs[irq];
	65	}
	66
1da177e4 LT	67	/*
	68	* Number of interrupts per specific IRQ source, since bootup
	69	*/
478735e3	70	extern unsigned int kstat_irqs(unsigned int irq);
1da177e4	71
f2c66cd8 KH	72	/*
	73	* Number of interrupts per cpu, since bootup
	74	*/
	75	static inline unsigned int kstat_cpu_irqs_sum(unsigned int cpu)
	76	{
	77	return kstat_cpu(cpu).irqs_sum;
	78	}
aa9c4c0f IM	79
	80	/*
	81	* Lock/unlock the current runqueue - to extract task statistics:
	82	*/
bb34d92f	83	extern unsigned long long task_delta_exec(struct task_struct *);
aa9c4c0f	84
457533a7 MS	85	extern void account_user_time(struct task_struct *, cputime_t, cputime_t);
457533a7 MS	86	extern void account_system_time(struct task_struct *, int, cputime_t, cputime_t);
79741dd3 MS	87	extern void account_steal_time(cputime_t);
	88	extern void account_idle_time(cputime_t);
	89
abf917cd	90	#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
bcebdf84 FW	91	static inline void account_process_tick(struct task_struct *tsk, int user)
	92	{
	93	vtime_account_user(tsk);
	94	}
	95	#else
79741dd3	96	extern void account_process_tick(struct task_struct *, int user);
bcebdf84 FW	97	#endif
bcebdf84 FW	98
79741dd3 MS	99	extern void account_steal_ticks(unsigned long ticks);
79741dd3 MS	100	extern void account_idle_ticks(unsigned long ticks);
1da177e4 LT	101
1da177e4 LT	102	#endif /* _LINUX_KERNEL_STAT_H */