1 #ifndef _LINUX_KERNEL_VTIME_H 2 #define _LINUX_KERNEL_VTIME_H 3 4 struct task_struct; 5 6 #ifdef CONFIG_VIRT_CPU_ACCOUNTING 7 extern void vtime_task_switch(struct task_struct *prev); 8 extern void vtime_account_system(struct task_struct *tsk); 9 extern void vtime_account_idle(struct task_struct *tsk); 10 extern void vtime_account_user(struct task_struct *tsk); 11 extern void vtime_account_irq_enter(struct task_struct *tsk); 12 13 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE 14 static inline bool vtime_accounting_enabled(void) { return true; } 15 #endif 16 17 #else /* !CONFIG_VIRT_CPU_ACCOUNTING */ 18 19 static inline void vtime_task_switch(struct task_struct *prev) { } 20 static inline void vtime_account_system(struct task_struct *tsk) { } 21 static inline void vtime_account_user(struct task_struct *tsk) { } 22 static inline void vtime_account_irq_enter(struct task_struct *tsk) { } 23 static inline bool vtime_accounting_enabled(void) { return false; } 24 #endif 25 26 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN 27 extern void arch_vtime_task_switch(struct task_struct *tsk); 28 extern void vtime_account_irq_exit(struct task_struct *tsk); 29 extern bool vtime_accounting_enabled(void); 30 extern void vtime_user_enter(struct task_struct *tsk); 31 static inline void vtime_user_exit(struct task_struct *tsk) 32 { 33 vtime_account_user(tsk); 34 } 35 extern void vtime_guest_enter(struct task_struct *tsk); 36 extern void vtime_guest_exit(struct task_struct *tsk); 37 extern void vtime_init_idle(struct task_struct *tsk, int cpu); 38 #else 39 static inline void vtime_account_irq_exit(struct task_struct *tsk) 40 { 41 /* On hard|softirq exit we always account to hard|softirq cputime */ 42 vtime_account_system(tsk); 43 } 44 static inline void vtime_user_enter(struct task_struct *tsk) { } 45 static inline void vtime_user_exit(struct task_struct *tsk) { } 46 static inline void vtime_guest_enter(struct task_struct *tsk) { } 47 static inline void vtime_guest_exit(struct task_struct *tsk) { } 48 static inline void vtime_init_idle(struct task_struct *tsk, int cpu) { } 49 #endif 50 51 #ifdef CONFIG_IRQ_TIME_ACCOUNTING 52 extern void irqtime_account_irq(struct task_struct *tsk); 53 #else 54 static inline void irqtime_account_irq(struct task_struct *tsk) { } 55 #endif 56 57 static inline void account_irq_enter_time(struct task_struct *tsk) 58 { 59 vtime_account_irq_enter(tsk); 60 irqtime_account_irq(tsk); 61 } 62 63 static inline void account_irq_exit_time(struct task_struct *tsk) 64 { 65 vtime_account_irq_exit(tsk); 66 irqtime_account_irq(tsk); 67 } 68 69 #endif /* _LINUX_KERNEL_VTIME_H */ 70