6fac4829ce
This is in preparation for the full dynticks feature. While remotely reading the cputime of a task running in a full dynticks CPU, we'll need to do some extra-computation. This way we can account the time it spent tickless in userspace since its last cputime snapshot. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de>
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/*
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* tsacct_kern.h - kernel header for system accounting over taskstats interface
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*
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* Copyright (C) Jay Lan SGI
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*/
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#ifndef _LINUX_TSACCT_KERN_H
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#define _LINUX_TSACCT_KERN_H
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#include <linux/taskstats.h>
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#ifdef CONFIG_TASKSTATS
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extern void bacct_add_tsk(struct user_namespace *user_ns,
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struct pid_namespace *pid_ns,
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struct taskstats *stats, struct task_struct *tsk);
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#else
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static inline void bacct_add_tsk(struct user_namespace *user_ns,
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struct pid_namespace *pid_ns,
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struct taskstats *stats, struct task_struct *tsk)
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{}
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#endif /* CONFIG_TASKSTATS */
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#ifdef CONFIG_TASK_XACCT
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extern void xacct_add_tsk(struct taskstats *stats, struct task_struct *p);
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extern void acct_update_integrals(struct task_struct *tsk);
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extern void acct_account_cputime(struct task_struct *tsk);
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extern void acct_clear_integrals(struct task_struct *tsk);
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#else
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static inline void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
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{}
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static inline void acct_update_integrals(struct task_struct *tsk)
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{}
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static inline void acct_account_cputime(struct task_struct *tsk)
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{}
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static inline void acct_clear_integrals(struct task_struct *tsk)
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{}
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#endif /* CONFIG_TASK_XACCT */
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#endif
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