| | 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 | |
| | 10 | struct task_struct; |
| | 11 | |
| | 12 | /* |
| | 13 | * vtime_accounting_enabled() definitions/declarations |
| | 14 | */ |
| | 15 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
| | 16 | static inline bool vtime_accounting_enabled(void) { return true; } |
| | 17 | #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */ |
| | 18 | |
| | 19 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN |
| | 20 | static inline bool vtime_accounting_enabled(void) |
| | 21 | { |
| | 22 | if (static_key_false(&context_tracking_enabled)) { |
| | 23 | if (context_tracking_active()) |
| | 24 | return true; |
| | 25 | } |
| | 26 | |
| | 27 | return false; |
| | 28 | } |
| | 29 | #endif /* CONFIG_VIRT_CPU_ACCOUNTING_GEN */ |
| | 30 | |
| | 31 | #ifndef CONFIG_VIRT_CPU_ACCOUNTING |
| | 32 | static 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 |
| | 42 | extern void vtime_task_switch(struct task_struct *prev); |
| | 43 | #else |
| | 44 | extern void vtime_common_task_switch(struct task_struct *prev); |
| | 45 | static 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 | |
| | 52 | extern void vtime_account_system(struct task_struct *tsk); |
| | 53 | extern void vtime_account_idle(struct task_struct *tsk); |
| | 54 | extern void vtime_account_user(struct task_struct *tsk); |
| | 55 | |
| | 56 | #ifdef __ARCH_HAS_VTIME_ACCOUNT |
| | 57 | extern void vtime_account_irq_enter(struct task_struct *tsk); |
| | 58 | #else |
| | 59 | extern void vtime_common_account_irq_enter(struct task_struct *tsk); |
| | 60 | static 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 | |
| | 69 | static inline void vtime_task_switch(struct task_struct *prev) { } |
| | 70 | static inline void vtime_account_system(struct task_struct *tsk) { } |
| | 71 | static inline void vtime_account_user(struct task_struct *tsk) { } |
| | 72 | static inline void vtime_account_irq_enter(struct task_struct *tsk) { } |
| | 73 | #endif /* !CONFIG_VIRT_CPU_ACCOUNTING */ |
| | 74 | |
| | 75 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN |
| | 76 | extern void arch_vtime_task_switch(struct task_struct *tsk); |
| | 77 | extern void vtime_gen_account_irq_exit(struct task_struct *tsk); |
| | 78 | |
| | 79 | static 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 | |
| | 85 | extern void vtime_user_enter(struct task_struct *tsk); |
| | 86 | |
| | 87 | static inline void vtime_user_exit(struct task_struct *tsk) |
| | 88 | { |
| | 89 | vtime_account_user(tsk); |
| | 90 | } |
| | 91 | extern void vtime_guest_enter(struct task_struct *tsk); |
| | 92 | extern void vtime_guest_exit(struct task_struct *tsk); |
| | 93 | extern void vtime_init_idle(struct task_struct *tsk, int cpu); |
| | 94 | #else /* !CONFIG_VIRT_CPU_ACCOUNTING_GEN */ |
| | 95 | static 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 | } |
| | 100 | static inline void vtime_user_enter(struct task_struct *tsk) { } |
| | 101 | static inline void vtime_user_exit(struct task_struct *tsk) { } |
| | 102 | static inline void vtime_guest_enter(struct task_struct *tsk) { } |
| | 103 | static inline void vtime_guest_exit(struct task_struct *tsk) { } |
| | 104 | static inline void vtime_init_idle(struct task_struct *tsk, int cpu) { } |
| | 105 | #endif |
| | 106 | |
| | 107 | #ifdef CONFIG_IRQ_TIME_ACCOUNTING |
| | 108 | extern void irqtime_account_irq(struct task_struct *tsk); |
| | 109 | #else |
| | 110 | static inline void irqtime_account_irq(struct task_struct *tsk) { } |
| | 111 | #endif |
| | 112 | |
| | 113 | static inline void account_irq_enter_time(struct task_struct *tsk) |
| | 114 | { |
| | 115 | vtime_account_irq_enter(tsk); |
| | 116 | irqtime_account_irq(tsk); |
| | 117 | } |
| | 118 | |
| | 119 | static 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 */ |
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