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Monday, April 4 • 10:40am - 11:30am
Digitalization of Kernel Diversion from the Upstream - Hisao Munakata, Renesas Electronics

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In 2011 the LTSI-project was launched to identify and reduce duplicate work being done by vendors. We are now 4.5 years into the process and we wanted to see how well we are doing and specifically have the following questions answered:

  • are we closer to mainline (Linus' repository) than before?
  • are patches actively upstreamed and do they reach Linus' repository?
  • what are the closest repositories and revisions?
  • is upstreaming consistent, or are we merging code dumps and then diverging again?

To answer these questions we enhanced the techniques powering the original Yaminabe project (the research that prompted us to start LTSI). These new methods allow us to make comparisons of source code to a Git forest (all branches in many Git trees).

In this talk we will explain the techniques that are used, the design decisions that we made and results we obtained using these methods and what they mean and (hopefully) answer the questions that we asked ourselves.

avatar for Hisao Munakata

Hisao Munakata

executive manager, Renesas
Munakata leads upstream kernel development team in Renesas to encourage developer to send more patched to the upstream. Also he actively works for Linux Foundation CE working. Automotive Grade Linux and other Linux Foundation project for the long time. He did various presentation, keynote and BoFs at various Linux Foundation and other conferences.

Monday April 4, 2016 10:40am - 11:30am
Harbor Ballroom I

Attendees (21)