sched: remove stat_gran

remove the stat_gran code - it was disabled by default and it causes
unnecessary overhead.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 1 insertions, 4 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index ae1544f0a20d..d4dabfcc776c 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -829,7 +829,7 @@ static void update_curr_load(struct rq *rq)
          * Stagger updates to ls->delta_fair. Very frequent updates
          * can be expensive.
          */
-        if (ls->delta_stat >= sysctl_sched_stat_granularity)
+        if (ls->delta_stat)
                 __update_curr_load(rq, ls);
 }
 
@@ -1588,9 +1588,6 @@ static void __sched_fork(struct task_struct *p)
         p->se.exec_start                = 0;
         p->se.sum_exec_runtime          = 0;
         p->se.prev_sum_exec_runtime     = 0;
-        p->se.delta_exec                = 0;
-        p->se.delta_fair_run            = 0;
-        p->se.delta_fair_sleep          = 0;
         p->se.wait_runtime              = 0;
         p->se.sleep_start_fair          = 0;