blob: ad54c846911b91a169b903f7b1f6fee24d4320a2 [file] [log] [blame]
#include <linux/smp.h>
#include <linux/threads.h>
#include <linux/percpu.h>
#include <linux/cpumask.h>
#include <linux/interrupt.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
struct cpu_usage_stat {
cputime64_t user;
cputime64_t nice;
cputime64_t system;
cputime64_t softirq;
cputime64_t irq;
cputime64_t idle;
cputime64_t iowait;
cputime64_t steal;
cputime64_t guest;
cputime64_t guest_nice;
struct kernel_stat {
struct cpu_usage_stat cpustat;
unsigned int irqs[NR_IRQS];
unsigned long irqs_sum;
unsigned int softirqs[NR_SOFTIRQS];
DECLARE_PER_CPU(struct kernel_stat, kstat);
#define kstat_cpu(cpu) per_cpu(kstat, cpu)
/* Must have preemption disabled for this to be meaningful. */
#define kstat_this_cpu __get_cpu_var(kstat)
extern unsigned long long nr_context_switches(void);
#define kstat_irqs_this_cpu(irq) \
struct irq_desc;
static inline void kstat_incr_irqs_this_cpu(unsigned int irq,
struct irq_desc *desc)
static inline unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
return kstat_cpu(cpu).irqs[irq];
#include <linux/irq.h>
extern unsigned int kstat_irqs_cpu(unsigned int irq, int cpu);
#define kstat_irqs_this_cpu(DESC) \
#define kstat_incr_irqs_this_cpu(irqno, DESC) do {\
kstat_this_cpu.irqs_sum++; } while (0)
static inline void kstat_incr_softirqs_this_cpu(unsigned int 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
static inline unsigned int kstat_irqs(unsigned int irq)
unsigned int sum = 0;
int cpu;
sum += kstat_irqs_cpu(irq, cpu);
return sum;
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);
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);
#endif /* _LINUX_KERNEL_STAT_H */