tree 010aee67a5f0616a7b5478fe1809316f685de39c
parent 24742ac1a6a7f88da3b608d2cfd62629d1cff9cd
author Puthikorn Voravootivat <puthik@google.com> 1602775465 -0700
committer Commit Bot <commit-bot@chromium.org> 1607729532 +0000

power_status: Fix weighted average calculation

In incremental stat, time_in_state sysfs file
contains log since boot. When calculating weighted
average, data before test start need to be subtracted.

BUG=b:170955211
TEST=power_Speedometer2 on lazor

Change-Id: I5716d03818d7f2460cfc6f4c6fb568befadccefe
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2476353
Reviewed-by: Mengqi Guo <mqg@chromium.org>
Tested-by: Puthikorn Voravootivat <puthik@chromium.org>
Commit-Queue: Puthikorn Voravootivat <puthik@chromium.org>