55dbdcfa05
vtime_accounting_enabled() checks if vtime is running on the current CPU and is as such a misnomer. Lets rename it to a function that reflect its locality. We are going to need the current name for a function that tells if vtime runs at all on some CPU. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: Christoph Lameter <cl@linux.com> Cc: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul E . McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1447948054-28668-6-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
126 lines
3.7 KiB
C
126 lines
3.7 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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#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
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static inline bool vtime_accounting_cpu_enabled(void) { return true; }
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#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
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#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
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static inline bool vtime_accounting_cpu_enabled(void)
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{
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if (context_tracking_is_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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#endif /* CONFIG_VIRT_CPU_ACCOUNTING_GEN */
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#ifndef CONFIG_VIRT_CPU_ACCOUNTING
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static inline bool vtime_accounting_cpu_enabled(void) { return false; }
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#endif /* !CONFIG_VIRT_CPU_ACCOUNTING */
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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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#ifdef __ARCH_HAS_VTIME_ACCOUNT
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extern void vtime_account_irq_enter(struct task_struct *tsk);
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#else
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extern void vtime_common_account_irq_enter(struct task_struct *tsk);
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static inline void vtime_account_irq_enter(struct task_struct *tsk)
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{
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if (vtime_accounting_cpu_enabled())
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vtime_common_account_irq_enter(tsk);
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}
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#endif /* __ARCH_HAS_VTIME_ACCOUNT */
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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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static inline void vtime_account_irq_enter(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_gen_account_irq_exit(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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if (vtime_accounting_cpu_enabled())
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vtime_gen_account_irq_exit(tsk);
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}
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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_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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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_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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