Commit f2a21ce1 authored Jul 23, 2014 by Srivatsa Vaddagiri Committed by Steve Muckle Jul 28, 2014

sched: window-stats: Fix incorrect calculation of partial_demand



When using MAX_POLICY, partial_demand is calculated incorrectly as 0.
Fix this by picking maximum of previous 4 windows and most recent
sample.

Change-Id: I27850a510746a63b5382c84761920fc021b876c5
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>

parent 5c351b80

kernel/sched/core.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -1145,9 +1145,14 @@ update_history(struct rq rq, struct task_struct p, u32 runtime, int samples,
		return;

		if (!new_window) {
		for (ridx = 0; ridx < RAVG_HIST_SIZE - 1; ++ridx)
		for (ridx = 0; ridx < RAVG_HIST_SIZE - 1; ++ridx) {
		sum += hist[ridx];
		if (hist[ridx] > max)
		max = hist[ridx];
		}
		sum += runtime;
		if (runtime > max)
		max = runtime;
		goto compute_demand;
		}