Open Source Practice of LG Electronics Hyo Jun Im Software Platform - PowerPoint PPT Presentation

Open Source Practice of LG Electronics Hyo Jun Im Software Platform Laboratory, LG Electronics

Introduction to LG Electronics LG Electronics is a global leader and technology innovator in consumer electronics, mobile communications and home appliances.

Overview This presentation covers both the open source compliance and open source engagement Compliance ��������� �� Engagement

Open Source Compliance How LG Electronics built the open source compliance process from scratch.

Steps for Building Up Open Source Compliance Process | Kick-starting open source compliance | Raising awareness | Setting up the process | Filling holes in the process | Efficient open source compliance

Kick-starting Open Source Compliance | Challenges > Lack of knowledge on open source compliance > Lack of verification tools | What we did > Just rushed into writing the open source software notice in the user manual > Manual open source identification and verification | What we got > Basic knowledge of popular open source licenses > Need for automated verification tools > Knowledge on practical issues with open source compliance

Raising Awareness | Introduction to relevant lawsuit case | Online / Offline training | Escalation of the open source compliance issues to management | Help from outside experts

Industry Lawsuit Case • 2006 Set the precedent that the sale of a product can be prohibited • 2007 Distributors can be held responsible, and lawsuits filed against them • 2008 Similar to the case with Skype Forced to give TVs to charity organizations as well as pay a penalty • 2010

Online Training

Setting up the Process | Verification Tool | Getting the open source compliance process into the product development process | Engagement from the legal department | Corporate-wide standard rules and processes | Monitoring | Training of the people involved in open source compliance

Internal Workshop

Monthly Newsletters and Documents

Internal Information Site

Filling Holes in the Process | 3 rd party software | OEM / ODM products | Conflict with the business | Non-Linux products | Organizations left out of the process � � � � Need one focal point in charge of open source compliance

Efficient Open Source Compliance | Distribution Site | Verification Automation | Accumulating knowledge and claims

Open Source Distribution Site http://opensource.lge.com � ����������������������������������������������� � �����������������������������������������������������

Open Source Compliance Process in General | Linux Foundation’s recommended compliance process ����������������������������������������������������������������������������� ���������������� ���!���"������������

LGE’s Open Source Compliance Process | Outline commonly used corporate process | Business units optimize the process to fit their specific needs

Recent Issues | Ambiguous licenses | Errors in the original open source software | Non-Linux products � � Direct communication with customers and community is important � � � � Just answer the phone! (quote by Professor Eben Moglen) � �

Open Source Engagement How LG Electronics is engaged in open source development.

Steps for Open Source Engagement | Encouraging engineers | Getting consensus from management | Dealing with fragmentation

Encouraging Engineers | Motivating engineers > Engineers can learn a lot from kernel experts worldwide > Individuals (not companies) are appreciated from the community > Less burden on maintaining | Rewarding contributors > Acknowledge by the boss or organization > Open Source Newbie Award

Getting Consensus from Management | Highlight the short-term and practical benefits | Appealing corporate-wide benefits from open source engagement > Capability building for essential open source software > Low maintenance cost > Catching up with the latest version of the open source > Reviews by gurus improve software quality | Persuading management > Talk with the specific numbers and cases > Getting help from outside experts

Dealing with the Fragmentation | Causes of fragmentation > Different source of original open source > Fragmentation by individual developers > Fragmentation by different organizations | Dealing with fragmentation > No magic bullet > Active information sharing among developers > Maintaining list of patches rather than whole tree > Internal open source repository > Upstreaming

Android Case ���������� ������������ ���������� ��������� �������� ������ ��������������� � LTSI is the initiative to reduce fragmentation � � �

Open Source Repository | Internal open source repository > Internal source tree for open source software > Patches made by each product team are merged into the repository > Staging area for candidate patches to be submitted to community Open Open Open Open ���������� source source source source Open Open Open Open Open Open Open Open Open Open Open Open source source source source source source source source source source source source ������� � ������� � ������� �

Case Study: SCSI Subsystem | Problem description > Kernel panic on sudden detach of USB storage device in TV > Caused by the race condition in SCSI subsystem | Working with the community > Developed a simple patch and applied to the product > Submitted the patch to LKML > Bart Van Assche further developed the patch (with 9 patches) > Zhuang, Jin Can of Intel fixed a potential problem with the patch | Getting benefits from community > Later on, we found another kernel panic on sudden detach of USB device > By applying the community patch, we fixed the problem!!

LG’s Kernel Contributions | LG Electronics is actively contributing to Linux kernel since 2012 > Some full-time Linux contributors | Contributions are focused on the core kernel > mm: vrange, per-process reclaim, slub, zram improvements, … > perf: perf trace, event group view, ftrace integration, … Kernel version 3.4 3.5 3.6 3.7 3.8 28 52 47 98 46 Contributions (0.2%) (0.4%) (0.4%) (0.8%) (0.3%) Core kernel 27 48 41 97 42 contributions * (1.7%) (3.0%) (3.4%) (5.3%) (2.7%) * core kernel: kernel mm tools fs * core kernel: kernel mm tools fs * core kernel: kernel mm tools fs * core kernel: kernel mm tools fs

Issues with Linux Contribution | Time difference | Language barrier | Time-to-market | Alignment with business | Explaining embedded-specific issues to the community

Thank You! | Thank you, kernel community > for making such a great OS and enabling us to make innovative products > for reviewing patches and giving us valuable feedback > for steadily maintaining kernel with high quality | Thank you, Linux Foundation > for your effort to protect and grow Linux > for holding various events for kernel developers > for giving us insight on the value of open source