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authorMorten Rasmussen <Morten.Rasmussen@arm.com>2012-06-29 16:46:34 +0100
committerViresh Kumar <viresh.kumar@linaro.org>2012-07-25 10:03:58 +0100
commitb32ad183db527a60b39e989b5b7e1576d5b80a66 (patch)
tree789c3891eaea61610e8fea843209e51a322ba674
parentb6afcf140b944908f7debec8a9fe186d214c07c7 (diff)
sched: entity load-tracking load_avg_ratio
load_avg_contrib includes task load.weight and therefore not the pure tracked load of the task. This patch adds load_avg_ratio, which does not include the task load.weight. Signed-off-by: Morten Rasmussen <Morten.Rasmussen@arm.com>
-rw-r--r--include/linux/sched.h1
-rw-r--r--kernel/sched/fair.c3
2 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 2b22d81c6b1d..c30a799227d9 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1140,6 +1140,7 @@ struct sched_avg {
u64 last_runnable_update;
s64 decay_count;
unsigned long load_avg_contrib;
+ unsigned long load_avg_ratio;
u32 usage_avg_sum;
};
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 989540007748..97760898376c 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1175,7 +1175,8 @@ static inline void __update_task_entity_contrib(struct sched_entity *se)
trace_sched_task_load_contrib(task_of(se), se->avg.load_avg_contrib);
contrib = se->avg.runnable_avg_sum * scale_load_down(1024);
contrib /= (se->avg.runnable_avg_period + 1);
- trace_sched_task_runnable_ratio(task_of(se), scale_load(contrib));
+ se->avg.load_avg_ratio = scale_load(contrib);
+ trace_sched_task_runnable_ratio(task_of(se), se->avg.load_avg_ratio);
contrib = se->avg.usage_avg_sum * scale_load_down(1024);
contrib /= (se->avg.runnable_avg_period + 1);
trace_sched_task_usage_ratio(task_of(se), scale_load(contrib));