1 #ifndef _LINUX_KERNEL_VTIME_H
2 #define _LINUX_KERNEL_VTIME_H
4 #include <linux/context_tracking_state.h>
5 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
13 * vtime_accounting_cpu_enabled() definitions/declarations
15 #if defined(CONFIG_VIRT_CPU_ACCOUNTING_NATIVE)
16 static inline bool vtime_accounting_cpu_enabled(void) { return true; }
17 #elif defined(CONFIG_VIRT_CPU_ACCOUNTING_GEN)
19 * Checks if vtime is enabled on some CPU. Cputime readers want to be careful
20 * in that case and compute the tickless cputime.
21 * For now vtime state is tied to context tracking. We might want to decouple
22 * those later if necessary.
24 static inline bool vtime_accounting_enabled(void)
26 return context_tracking_is_enabled();
29 static inline bool vtime_accounting_cpu_enabled(void)
31 if (vtime_accounting_enabled()) {
32 if (context_tracking_cpu_is_enabled())
38 #else /* !CONFIG_VIRT_CPU_ACCOUNTING */
39 static inline bool vtime_accounting_cpu_enabled(void) { return false; }
46 #ifdef CONFIG_VIRT_CPU_ACCOUNTING
48 #ifdef __ARCH_HAS_VTIME_TASK_SWITCH
49 extern void vtime_task_switch(struct task_struct *prev);
51 extern void vtime_common_task_switch(struct task_struct *prev);
52 static inline void vtime_task_switch(struct task_struct *prev)
54 if (vtime_accounting_cpu_enabled())
55 vtime_common_task_switch(prev);
57 #endif /* __ARCH_HAS_VTIME_TASK_SWITCH */
59 extern void vtime_account_system(struct task_struct *tsk);
60 extern void vtime_account_idle(struct task_struct *tsk);
62 #else /* !CONFIG_VIRT_CPU_ACCOUNTING */
64 static inline void vtime_task_switch(struct task_struct *prev) { }
65 static inline void vtime_account_system(struct task_struct *tsk) { }
66 #endif /* !CONFIG_VIRT_CPU_ACCOUNTING */
68 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
69 extern void arch_vtime_task_switch(struct task_struct *tsk);
70 extern void vtime_account_user(struct task_struct *tsk);
71 extern void vtime_user_enter(struct task_struct *tsk);
73 static inline void vtime_user_exit(struct task_struct *tsk)
75 vtime_account_user(tsk);
78 extern void vtime_guest_enter(struct task_struct *tsk);
79 extern void vtime_guest_exit(struct task_struct *tsk);
80 extern void vtime_init_idle(struct task_struct *tsk, int cpu);
81 #else /* !CONFIG_VIRT_CPU_ACCOUNTING_GEN */
82 static inline void vtime_account_user(struct task_struct *tsk) { }
83 static inline void vtime_user_enter(struct task_struct *tsk) { }
84 static inline void vtime_user_exit(struct task_struct *tsk) { }
85 static inline void vtime_guest_enter(struct task_struct *tsk) { }
86 static inline void vtime_guest_exit(struct task_struct *tsk) { }
87 static inline void vtime_init_idle(struct task_struct *tsk, int cpu) { }
90 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
91 extern void vtime_account_irq_enter(struct task_struct *tsk);
92 static inline void vtime_account_irq_exit(struct task_struct *tsk)
94 /* On hard|softirq exit we always account to hard|softirq cputime */
95 vtime_account_system(tsk);
97 extern void vtime_flush(struct task_struct *tsk);
98 #else /* !CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
99 static inline void vtime_account_irq_enter(struct task_struct *tsk) { }
100 static inline void vtime_account_irq_exit(struct task_struct *tsk) { }
101 static inline void vtime_flush(struct task_struct *tsk) { }
105 #ifdef CONFIG_IRQ_TIME_ACCOUNTING
106 extern void irqtime_account_irq(struct task_struct *tsk);
108 static inline void irqtime_account_irq(struct task_struct *tsk) { }
111 static inline void account_irq_enter_time(struct task_struct *tsk)
113 vtime_account_irq_enter(tsk);
114 irqtime_account_irq(tsk);
117 static inline void account_irq_exit_time(struct task_struct *tsk)
119 vtime_account_irq_exit(tsk);
120 irqtime_account_irq(tsk);
123 #endif /* _LINUX_KERNEL_VTIME_H */