1#ifndef _LINUX_KERNEL_VTIME_H 2#define _LINUX_KERNEL_VTIME_H 3 4#include <linux/context_tracking_state.h> 5#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE 6#include <asm/vtime.h> 7#endif 8 9 10struct task_struct; 11 12/* 13 * vtime_accounting_enabled() definitions/declarations 14 */ 15#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE 16static inline bool vtime_accounting_enabled(void) { return true; } 17#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */ 18 19#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN 20static inline bool vtime_accounting_enabled(void) 21{ 22 if (context_tracking_is_enabled()) { 23 if (context_tracking_cpu_is_enabled()) 24 return true; 25 } 26 27 return false; 28} 29#endif /* CONFIG_VIRT_CPU_ACCOUNTING_GEN */ 30 31#ifndef CONFIG_VIRT_CPU_ACCOUNTING 32static inline bool vtime_accounting_enabled(void) { return false; } 33#endif /* !CONFIG_VIRT_CPU_ACCOUNTING */ 34 35 36/* 37 * Common vtime APIs 38 */ 39#ifdef CONFIG_VIRT_CPU_ACCOUNTING 40 41#ifdef __ARCH_HAS_VTIME_TASK_SWITCH 42extern void vtime_task_switch(struct task_struct *prev); 43#else 44extern void vtime_common_task_switch(struct task_struct *prev); 45static inline void vtime_task_switch(struct task_struct *prev) 46{ 47 if (vtime_accounting_enabled()) 48 vtime_common_task_switch(prev); 49} 50#endif /* __ARCH_HAS_VTIME_TASK_SWITCH */ 51 52extern void vtime_account_system(struct task_struct *tsk); 53extern void vtime_account_idle(struct task_struct *tsk); 54extern void vtime_account_user(struct task_struct *tsk); 55 56#ifdef __ARCH_HAS_VTIME_ACCOUNT 57extern void vtime_account_irq_enter(struct task_struct *tsk); 58#else 59extern void vtime_common_account_irq_enter(struct task_struct *tsk); 60static inline void vtime_account_irq_enter(struct task_struct *tsk) 61{ 62 if (vtime_accounting_enabled()) 63 vtime_common_account_irq_enter(tsk); 64} 65#endif /* __ARCH_HAS_VTIME_ACCOUNT */ 66 67#else /* !CONFIG_VIRT_CPU_ACCOUNTING */ 68 69static inline void vtime_task_switch(struct task_struct *prev) { } 70static inline void vtime_account_system(struct task_struct *tsk) { } 71static inline void vtime_account_user(struct task_struct *tsk) { } 72static inline void vtime_account_irq_enter(struct task_struct *tsk) { } 73#endif /* !CONFIG_VIRT_CPU_ACCOUNTING */ 74 75#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN 76extern void arch_vtime_task_switch(struct task_struct *tsk); 77extern void vtime_gen_account_irq_exit(struct task_struct *tsk); 78 79static inline void vtime_account_irq_exit(struct task_struct *tsk) 80{ 81 if (vtime_accounting_enabled()) 82 vtime_gen_account_irq_exit(tsk); 83} 84 85extern void vtime_user_enter(struct task_struct *tsk); 86 87static inline void vtime_user_exit(struct task_struct *tsk) 88{ 89 vtime_account_user(tsk); 90} 91extern void vtime_guest_enter(struct task_struct *tsk); 92extern void vtime_guest_exit(struct task_struct *tsk); 93extern void vtime_init_idle(struct task_struct *tsk, int cpu); 94#else /* !CONFIG_VIRT_CPU_ACCOUNTING_GEN */ 95static inline void vtime_account_irq_exit(struct task_struct *tsk) 96{ 97 /* On hard|softirq exit we always account to hard|softirq cputime */ 98 vtime_account_system(tsk); 99} 100static inline void vtime_user_enter(struct task_struct *tsk) { } 101static inline void vtime_user_exit(struct task_struct *tsk) { } 102static inline void vtime_guest_enter(struct task_struct *tsk) { } 103static inline void vtime_guest_exit(struct task_struct *tsk) { } 104static inline void vtime_init_idle(struct task_struct *tsk, int cpu) { } 105#endif 106 107#ifdef CONFIG_IRQ_TIME_ACCOUNTING 108extern void irqtime_account_irq(struct task_struct *tsk); 109#else 110static inline void irqtime_account_irq(struct task_struct *tsk) { } 111#endif 112 113static inline void account_irq_enter_time(struct task_struct *tsk) 114{ 115 vtime_account_irq_enter(tsk); 116 irqtime_account_irq(tsk); 117} 118 119static inline void account_irq_exit_time(struct task_struct *tsk) 120{ 121 vtime_account_irq_exit(tsk); 122 irqtime_account_irq(tsk); 123} 124 125#endif /* _LINUX_KERNEL_VTIME_H */ 126