forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
#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_cpu_enabled() 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_cpu_enabled(void) { return true; }
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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_is_enabled();
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}
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static inline bool vtime_accounting_cpu_enabled(void)
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{
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if (vtime_accounting_enabled()) {
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if (context_tracking_cpu_is_enabled())
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return true;
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}
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return false;
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}
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#else /* !CONFIG_VIRT_CPU_ACCOUNTING */
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static inline bool vtime_accounting_cpu_enabled(void) { return false; }
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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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#ifdef __ARCH_HAS_VTIME_TASK_SWITCH
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extern void vtime_task_switch(struct task_struct *prev);
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#else
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extern void vtime_common_task_switch(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_cpu_enabled())
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vtime_common_task_switch(prev);
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}
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#endif /* __ARCH_HAS_VTIME_TASK_SWITCH */
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extern void vtime_account_system(struct task_struct *tsk);
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extern void vtime_account_idle(struct task_struct *tsk);
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extern void vtime_account_user(struct task_struct *tsk);
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#else /* !CONFIG_VIRT_CPU_ACCOUNTING */
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static inline void vtime_task_switch(struct task_struct *prev) { }
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static inline void vtime_account_system(struct task_struct *tsk) { }
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static inline void vtime_account_user(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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static inline void vtime_user_exit(struct task_struct *tsk)
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{
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vtime_account_user(tsk);
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}
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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_enter(struct task_struct *tsk);
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static inline void vtime_account_irq_exit(struct task_struct *tsk)
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{
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/* On hard|softirq exit we always account to hard|softirq cputime */
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vtime_account_system(tsk);
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}
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#else /* !CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
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static inline void vtime_account_irq_enter(struct task_struct *tsk) { }
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static inline void vtime_account_irq_exit(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);
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#else
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static inline void irqtime_account_irq(struct task_struct *tsk) { }
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#endif
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static inline void account_irq_enter_time(struct task_struct *tsk)
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{
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vtime_account_irq_enter(tsk);
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irqtime_account_irq(tsk);
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}
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static inline void account_irq_exit_time(struct task_struct *tsk)
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{
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vtime_account_irq_exit(tsk);
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irqtime_account_irq(tsk);
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}
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#endif /* _LINUX_KERNEL_VTIME_H */
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