Re: [Powertop] [PATCH] Fix timer and work perf events timestamp tracing

On Wed, Sep 5, 2012 at 3:52 PM, Rajagopal Venkat rajagopal.venkat@linaro.org wrote:

Incorrect timer and work perf events timestamp tracing is one of the reason for reporting usage over 100%. This patch will resolve the issue by

• rejecting the events for which entry timestamp is not recorded.

Currently these events exit timestamp itself is considered as usage period resulting in over 100% usage.

• clearing event timestamps from global map at the end of each

measurement to avoid collision with earlier recorded timestamps.

Tried it few times on Panda Board.

Tested-by: Viresh Kumar viresh.kumar@linaro.org