From 2735664021d9b4b6089bd008a3ed8a0e04a5dd38 Mon Sep 17 00:00:00 2001
From: Srivatsa Vaddagiri <vatsa@codeaurora.org>
Date: Thu, 12 Jun 2014 12:21:52 -0700
Subject: sched: Use historical load for freq governor input

Historical load maintained per task can be used to influence cpu
frequency better. For example, when a heavy demand task wakes up after
prolonged sleep, we could use the historical load information to alert
cpufreq governor about the need to raise cpu frequency. This patch
changes CPU busy statistics to be aggregation of historical task
demand. Also task's historical load (as defined by
sysctl_sched_window_stats_policy) is add to cpu's busy statistics
(rq->curr_runnable_sum) whenever it executes on a cpu.

Change-Id: I2b66136f138b147ba19083b9b044c4feb20d9b57
Signed-off-by: Srivatsa Vaddagiri <vatsa@codeaurora.org>
[rameezmustafa@codeaurora.org]: Port to msm-3.18]
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org
---
 include/linux/sched.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'include/linux')

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 2d2a94575eaa..f9e099e741e1 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1269,7 +1269,7 @@ struct ravg {
 	 * sum_history (empty windows are ignored in sum_history).
 	 */
 	u64 mark_start;
-	u32 sum, demand, prev_window;
+	u32 sum, demand, prev_window, partial_demand;
 	u32 sum_history[RAVG_HIST_SIZE];
 };
 
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