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128 lines
4.0 KiB
128 lines
4.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_KERNEL_VTIME_H |
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#define _LINUX_KERNEL_VTIME_H |
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#include <linux/context_tracking_state.h> |
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
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#include <asm/vtime.h> |
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#endif |
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struct task_struct; |
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/* |
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* vtime_accounting_enabled_this_cpu() definitions/declarations |
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*/ |
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#if defined(CONFIG_VIRT_CPU_ACCOUNTING_NATIVE) |
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static inline bool vtime_accounting_enabled_this_cpu(void) { return true; } |
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extern void vtime_task_switch(struct task_struct *prev); |
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#elif defined(CONFIG_VIRT_CPU_ACCOUNTING_GEN) |
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/* |
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* Checks if vtime is enabled on some CPU. Cputime readers want to be careful |
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* in that case and compute the tickless cputime. |
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* For now vtime state is tied to context tracking. We might want to decouple |
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* those later if necessary. |
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*/ |
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static inline bool vtime_accounting_enabled(void) |
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{ |
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return context_tracking_enabled(); |
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} |
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static inline bool vtime_accounting_enabled_cpu(int cpu) |
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{ |
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return context_tracking_enabled_cpu(cpu); |
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} |
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static inline bool vtime_accounting_enabled_this_cpu(void) |
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{ |
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return context_tracking_enabled_this_cpu(); |
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} |
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extern void vtime_task_switch_generic(struct task_struct *prev); |
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static inline void vtime_task_switch(struct task_struct *prev) |
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{ |
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if (vtime_accounting_enabled_this_cpu()) |
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vtime_task_switch_generic(prev); |
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} |
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#else /* !CONFIG_VIRT_CPU_ACCOUNTING */ |
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static inline bool vtime_accounting_enabled_cpu(int cpu) {return false; } |
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static inline bool vtime_accounting_enabled_this_cpu(void) { return false; } |
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static inline void vtime_task_switch(struct task_struct *prev) { } |
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#endif |
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/* |
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* Common vtime APIs |
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*/ |
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING |
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extern void vtime_account_kernel(struct task_struct *tsk); |
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extern void vtime_account_idle(struct task_struct *tsk); |
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#else /* !CONFIG_VIRT_CPU_ACCOUNTING */ |
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static inline void vtime_account_kernel(struct task_struct *tsk) { } |
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#endif /* !CONFIG_VIRT_CPU_ACCOUNTING */ |
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN |
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extern void arch_vtime_task_switch(struct task_struct *tsk); |
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extern void vtime_user_enter(struct task_struct *tsk); |
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extern void vtime_user_exit(struct task_struct *tsk); |
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extern void vtime_guest_enter(struct task_struct *tsk); |
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extern void vtime_guest_exit(struct task_struct *tsk); |
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extern void vtime_init_idle(struct task_struct *tsk, int cpu); |
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#else /* !CONFIG_VIRT_CPU_ACCOUNTING_GEN */ |
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static inline void vtime_user_enter(struct task_struct *tsk) { } |
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static inline void vtime_user_exit(struct task_struct *tsk) { } |
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static inline void vtime_guest_enter(struct task_struct *tsk) { } |
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static inline void vtime_guest_exit(struct task_struct *tsk) { } |
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static inline void vtime_init_idle(struct task_struct *tsk, int cpu) { } |
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#endif |
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
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extern void vtime_account_irq(struct task_struct *tsk, unsigned int offset); |
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extern void vtime_account_softirq(struct task_struct *tsk); |
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extern void vtime_account_hardirq(struct task_struct *tsk); |
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extern void vtime_flush(struct task_struct *tsk); |
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#else /* !CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */ |
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static inline void vtime_account_irq(struct task_struct *tsk, unsigned int offset) { } |
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static inline void vtime_account_softirq(struct task_struct *tsk) { } |
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static inline void vtime_account_hardirq(struct task_struct *tsk) { } |
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static inline void vtime_flush(struct task_struct *tsk) { } |
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#endif |
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#ifdef CONFIG_IRQ_TIME_ACCOUNTING |
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extern void irqtime_account_irq(struct task_struct *tsk, unsigned int offset); |
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#else |
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static inline void irqtime_account_irq(struct task_struct *tsk, unsigned int offset) { } |
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#endif |
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static inline void account_softirq_enter(struct task_struct *tsk) |
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{ |
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vtime_account_irq(tsk, SOFTIRQ_OFFSET); |
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irqtime_account_irq(tsk, SOFTIRQ_OFFSET); |
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} |
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static inline void account_softirq_exit(struct task_struct *tsk) |
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{ |
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vtime_account_softirq(tsk); |
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irqtime_account_irq(tsk, 0); |
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} |
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static inline void account_hardirq_enter(struct task_struct *tsk) |
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{ |
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vtime_account_irq(tsk, HARDIRQ_OFFSET); |
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irqtime_account_irq(tsk, HARDIRQ_OFFSET); |
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} |
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static inline void account_hardirq_exit(struct task_struct *tsk) |
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{ |
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vtime_account_hardirq(tsk); |
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irqtime_account_irq(tsk, 0); |
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} |
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#endif /* _LINUX_KERNEL_VTIME_H */
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