Commit 6a6029b8 authored Mar 14, 2008 by Ingo Molnar

sched: simplify sched_slice()



Use the existing calc_delta_mine() calculation for sched_slice(). This
saves a divide and simplifies the code because we share it with the
other /cfs_rq->load users.

It also improves code size:

      text    data     bss     dec     hex filename
     42659    2740     144   45543    b1e7 sched.o.before
     42093    2740     144   44977    afb1 sched.o.after

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>

parent e22ecef1

kernel/sched_fair.c

+2 −6

Original line number	Diff line number	Diff line
		@@ -283,12 +283,8 @@ static u64 __sched_period(unsigned long nr_running)
		*/
		static u64 sched_slice(struct cfs_rq cfs_rq, struct sched_entity se)
		{
		u64 slice = __sched_period(cfs_rq->nr_running);

		slice *= se->load.weight;
		do_div(slice, cfs_rq->load.weight);

		return slice;
		return calc_delta_mine(__sched_period(cfs_rq->nr_running),
		se->load.weight, &cfs_rq->load);
		}

		/*