root/include/linux/vtime.h

INCLUDED FROM

DEFINITIONS

1. vtime_accounting_enabled
2. vtime_accounting_enabled
3. vtime_accounting_enabled
4. vtime_task_switch
5. vtime_account_irq_enter
6. vtime_task_switch
7. vtime_account_system
8. vtime_account_user
9. vtime_account_irq_enter
10. vtime_account_irq_exit
11. vtime_user_exit
12. vtime_account_irq_exit
13. vtime_user_enter
14. vtime_user_exit
15. vtime_guest_enter
16. vtime_guest_exit
17. vtime_init_idle
18. irqtime_account_irq
19. account_irq_enter_time
20. account_irq_exit_time

#ifndef _LINUX_KERNEL_VTIME_H
#define _LINUX_KERNEL_VTIME_H

#include <linux/context_tracking_state.h>
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
#include <asm/vtime.h>
#endif


struct task_struct;

/*
 * vtime_accounting_enabled() definitions/declarations
 */
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
static inline bool vtime_accounting_enabled(void) { return true; }
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */

#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
static inline bool vtime_accounting_enabled(void)
{
        if (context_tracking_is_enabled()) {
                if (context_tracking_cpu_is_enabled())
                        return true;
        }

        return false;
}
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_GEN */

#ifndef CONFIG_VIRT_CPU_ACCOUNTING
static inline bool vtime_accounting_enabled(void) { return false; }
#endif /* !CONFIG_VIRT_CPU_ACCOUNTING */


/*
 * Common vtime APIs
 */
#ifdef CONFIG_VIRT_CPU_ACCOUNTING

#ifdef __ARCH_HAS_VTIME_TASK_SWITCH
extern void vtime_task_switch(struct task_struct *prev);
#else
extern void vtime_common_task_switch(struct task_struct *prev);
static inline void vtime_task_switch(struct task_struct *prev)
{
        if (vtime_accounting_enabled())
                vtime_common_task_switch(prev);
}
#endif /* __ARCH_HAS_VTIME_TASK_SWITCH */

extern void vtime_account_system(struct task_struct *tsk);
extern void vtime_account_idle(struct task_struct *tsk);
extern void vtime_account_user(struct task_struct *tsk);

#ifdef __ARCH_HAS_VTIME_ACCOUNT
extern void vtime_account_irq_enter(struct task_struct *tsk);
#else
extern void vtime_common_account_irq_enter(struct task_struct *tsk);
static inline void vtime_account_irq_enter(struct task_struct *tsk)
{
        if (vtime_accounting_enabled())
                vtime_common_account_irq_enter(tsk);
}
#endif /* __ARCH_HAS_VTIME_ACCOUNT */

#else /* !CONFIG_VIRT_CPU_ACCOUNTING */

static inline void vtime_task_switch(struct task_struct *prev) { }
static inline void vtime_account_system(struct task_struct *tsk) { }
static inline void vtime_account_user(struct task_struct *tsk) { }
static inline void vtime_account_irq_enter(struct task_struct *tsk) { }
#endif /* !CONFIG_VIRT_CPU_ACCOUNTING */

#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
extern void arch_vtime_task_switch(struct task_struct *tsk);
extern void vtime_gen_account_irq_exit(struct task_struct *tsk);

static inline void vtime_account_irq_exit(struct task_struct *tsk)
{
        if (vtime_accounting_enabled())
                vtime_gen_account_irq_exit(tsk);
}

extern void vtime_user_enter(struct task_struct *tsk);

static inline void vtime_user_exit(struct task_struct *tsk)
{
        vtime_account_user(tsk);
}
extern void vtime_guest_enter(struct task_struct *tsk);
extern void vtime_guest_exit(struct task_struct *tsk);
extern void vtime_init_idle(struct task_struct *tsk, int cpu);
#else /* !CONFIG_VIRT_CPU_ACCOUNTING_GEN  */
static inline void vtime_account_irq_exit(struct task_struct *tsk)
{
        /* On hard|softirq exit we always account to hard|softirq cputime */
        vtime_account_system(tsk);
}
static inline void vtime_user_enter(struct task_struct *tsk) { }
static inline void vtime_user_exit(struct task_struct *tsk) { }
static inline void vtime_guest_enter(struct task_struct *tsk) { }
static inline void vtime_guest_exit(struct task_struct *tsk) { }
static inline void vtime_init_idle(struct task_struct *tsk, int cpu) { }
#endif

#ifdef CONFIG_IRQ_TIME_ACCOUNTING
extern void irqtime_account_irq(struct task_struct *tsk);
#else
static inline void irqtime_account_irq(struct task_struct *tsk) { }
#endif

static inline void account_irq_enter_time(struct task_struct *tsk)
{
        vtime_account_irq_enter(tsk);
        irqtime_account_irq(tsk);
}

static inline void account_irq_exit_time(struct task_struct *tsk)
{
        vtime_account_irq_exit(tsk);
        irqtime_account_irq(tsk);
}

#endif /* _LINUX_KERNEL_VTIME_H */