Operating System Project 2

Introduction

A safer OOM-killer for Android kernel with very low overhead

Course and project information are provided in handout. Implementation details are explained in project report.

• Baseline

  • Implement a custom system call which can set memory limits for UIDs
  • Define a global variable to store UID and RSS information
  • Implement a naive OOM-killertriggered by __alloc_page_nodemask (not included in this version)

• Bonus

  • Implement a OOM-killer triggerd by timer
  • Allow users to exceed memory limits for a pre-set time period

• Something More!

  • Support using make menueconfig to add Yimin's OOM-killer feature in GUI
  • Make timer dynamic to further decrease overhead
  • Support passive detection of changes of UIDs using tracepoints to reduce the overhead of OOM-killer to the limit

Special Thanks

To my inspiring and gifted classmates @Alex Chi @Bugen Zhao