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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2012-11-13 14:20:55 +0100 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2013-01-27 19:23:31 +0100 |
| commit | 6fac4829ce0ef9b7f24369086ce5f0e9f38d37bc (patch) | |
| tree | 44da712b66d778c2fd701f9c96b00e108530e1a9 /include/linux/sched.h | |
| parent | 3f4724ea85b7d9055a9976fa8f30b471bdfbca93 (diff) | |
| download | linux-3.10-6fac4829ce0ef9b7f24369086ce5f0e9f38d37bc.tar.gz linux-3.10-6fac4829ce0ef9b7f24369086ce5f0e9f38d37bc.tar.bz2 linux-3.10-6fac4829ce0ef9b7f24369086ce5f0e9f38d37bc.zip | |
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/sched.h')
| -rw-r--r-- | include/linux/sched.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 6fc8f45de4e..a9c608b6154 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1792,6 +1792,29 @@ static inline void put_task_struct(struct task_struct *t) __put_task_struct(t); } +static inline cputime_t task_gtime(struct task_struct *t) +{ + return t->gtime; +} + +static inline void task_cputime(struct task_struct *t, + cputime_t *utime, cputime_t *stime) +{ + if (utime) + *utime = t->utime; + if (stime) + *stime = t->stime; +} + +static inline void task_cputime_scaled(struct task_struct *t, + cputime_t *utimescaled, + cputime_t *stimescaled) +{ + if (utimescaled) + *utimescaled = t->utimescaled; + if (stimescaled) + *stimescaled = t->stimescaled; +} extern void task_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st); extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut, cputime_t *st); |