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perfcounters: fix task clock counter

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Impact: fix per task clock counter precision

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-12-17 14:10:57 +01:00
parent 7671581f16
commit aa9c4c0f96
4 changed files with 120 additions and 24 deletions
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8
include/linux/kernel_stat.h
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@ -66,7 +66,15 @@ static inline unsigned int kstat_irqs(unsigned int irq)
return sum;
}
/*
* Lock/unlock the current runqueue - to extract task statistics:
*/
extern void curr_rq_lock_irq_save(unsigned long *flags);
extern void curr_rq_unlock_irq_restore(unsigned long *flags);
extern unsigned long long __task_delta_exec(struct task_struct *tsk, int update);
extern unsigned long long task_delta_exec(struct task_struct *);
extern void account_user_time(struct task_struct *, cputime_t);
extern void account_user_time_scaled(struct task_struct *, cputime_t);
extern void account_system_time(struct task_struct *, int, cputime_t);