142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
#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 <asm/irq.h>
|
|
#include <asm/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 {
|
|
#ifndef CONFIG_GENERIC_HARDIRQS
|
|
unsigned int irqs[NR_IRQS];
|
|
#endif
|
|
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);
|
|
|
|
#ifndef CONFIG_GENERIC_HARDIRQS
|
|
|
|
struct irq_desc;
|
|
|
|
static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
|
|
struct irq_desc *desc)
|
|
{
|
|
__this_cpu_inc(kstat.irqs[irq]);
|
|
__this_cpu_inc(kstat.irqs_sum);
|
|
}
|
|
|
|
static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
|
|
{
|
|
return kstat_cpu(cpu).irqs[irq];
|
|
}
|
|
#else
|
|
#include <linux/irq.h>
|
|
extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
|
|
|
|
#define kstat_incr_irqs_this_cpu(irqno, DESC) \
|
|
do { \
|
|
__this_cpu_inc(*(DESC)->kstat_irqs); \
|
|
__this_cpu_inc(kstat.irqs_sum); \
|
|
} while (0)
|
|
|
|
#endif
|
|
|
|
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
|
|
*/
|
|
#ifndef CONFIG_GENERIC_HARDIRQS
|
|
static inline unsigned int kstat_irqs(unsigned int irq)
|
|
{
|
|
unsigned int sum = 0;
|
|
int cpu;
|
|
|
|
for_each_possible_cpu(cpu)
|
|
sum += kstat_irqs_cpu(irq, cpu);
|
|
|
|
return sum;
|
|
}
|
|
#else
|
|
extern unsigned int kstat_irqs(unsigned int irq);
|
|
#endif
|
|
|
|
/*
|
|
* 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);
|
|
|
|
extern void account_process_tick(struct task_struct *, int user);
|
|
extern void account_steal_ticks(unsigned long ticks);
|
|
extern void account_idle_ticks(unsigned long ticks);
|
|
|
|
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
|
|
extern void vtime_task_switch(struct task_struct *prev);
|
|
extern void vtime_account_system(struct task_struct *tsk);
|
|
extern void vtime_account_idle(struct task_struct *tsk);
|
|
#else
|
|
static inline void vtime_task_switch(struct task_struct *prev) { }
|
|
#endif
|
|
|
|
#endif /* _LINUX_KERNEL_STAT_H */
|