cputime: Move thread_group_cputime() to sched code

thread_group_cputime() is a general cputime API that is not only
used by posix cpu timer. Let's move this helper to sched code.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>

1 files changed, 0 insertions, 24 deletions

diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index 125cb67daa21..d73840271dce 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -217,30 +217,6 @@ static int cpu_clock_sample(const clockid_t which_clock, struct task_struct *p,
         return 0;
 }
 
-void thread_group_cputime(struct task_struct *tsk, struct task_cputime *times)
-{
-        struct signal_struct *sig = tsk->signal;
-        struct task_struct *t;
-
-        times->utime = sig->utime;
-        times->stime = sig->stime;
-        times->sum_exec_runtime = sig->sum_sched_runtime;
-
-        rcu_read_lock();
-        /* make sure we can trust tsk->thread_group list */
-        if (!likely(pid_alive(tsk)))
-                goto out;
-
-        t = tsk;
-        do {
-                times->utime += t->utime;
-                times->stime += t->stime;
-                times->sum_exec_runtime += task_sched_runtime(t);
-        } while_each_thread(tsk, t);
-out:
-        rcu_read_unlock();
-}
-
 static void update_gt_cputime(struct task_cputime *a, struct task_cputime *b)
 {
         if (b->utime > a->utime)