diff options
| author | Joonwoo Park <joonwoop@codeaurora.org> | 2016-06-17 15:15:04 -0700 |
|---|---|---|
| committer | Kyle Yan <kyan@codeaurora.org> | 2016-06-21 15:11:21 -0700 |
| commit | c876c09f5817c12b9162cf2389be730e94c35d75 (patch) | |
| tree | ff50e0681ba6fec2acb01dddaafa7d941f61fda4 /kernel/sched/debug.c | |
| parent | 47c31979a1a96ee9dba1ebc43d0f04a6e7f5ee19 (diff) | |
sched: kill unnecessary divisions on fast path
The max_possible_efficiency and CPU's efficiency are fixed values which
are determined at cluster allocation time. Avoid division on the fast
by using precomputed scale factor.
Also update_cpu_busy_time() doesn't need to know how many full windows
have elapsed. Thus replace unneeded division with simple comparison.
Change-Id: I2be1aad3fb9b895e4f0917d05bd8eade985bbccf
Suggested-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Diffstat (limited to 'kernel/sched/debug.c')
| -rw-r--r-- | kernel/sched/debug.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index 469640a0a626..d1c0ef4bf07d 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -326,6 +326,7 @@ do { \ P(cluster->efficiency); P(cluster->cur_freq); P(cluster->max_freq); + P(cluster->exec_scale_factor); #endif #ifdef CONFIG_SCHED_HMP P(hmp_stats.nr_big_tasks); |