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authorFrederic Weisbecker <fweisbec@gmail.com>2012-11-13 17:20:55 +0400
committerFrederic Weisbecker <fweisbec@gmail.com>2013-01-27 22:23:31 +0400
commit6fac4829ce0ef9b7f24369086ce5f0e9f38d37bc (patch)
tree44da712b66d778c2fd701f9c96b00e108530e1a9 /include/linux/tsacct_kern.h
parent3f4724ea85b7d9055a9976fa8f30b471bdfbca93 (diff)
downloadlinux-6fac4829ce0ef9b7f24369086ce5f0e9f38d37bc.tar.xz
cputime: Use accessors to read task cputime stats
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>
Diffstat (limited to 'include/linux/tsacct_kern.h')
-rw-r--r--include/linux/tsacct_kern.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/tsacct_kern.h b/include/linux/tsacct_kern.h
index 44893e5ec8f7..3251965bf4cc 100644
--- a/include/linux/tsacct_kern.h
+++ b/include/linux/tsacct_kern.h
@@ -23,12 +23,15 @@ static inline void bacct_add_tsk(struct user_namespace *user_ns,
#ifdef CONFIG_TASK_XACCT
extern void xacct_add_tsk(struct taskstats *stats, struct task_struct *p);
extern void acct_update_integrals(struct task_struct *tsk);
+extern void acct_account_cputime(struct task_struct *tsk);
extern void acct_clear_integrals(struct task_struct *tsk);
#else
static inline void xacct_add_tsk(struct taskstats *stats, struct task_struct *p)
{}
static inline void acct_update_integrals(struct task_struct *tsk)
{}
+static inline void acct_account_cputime(struct task_struct *tsk)
+{}
static inline void acct_clear_integrals(struct task_struct *tsk)
{}
#endif /* CONFIG_TASK_XACCT */