All the new ARM CPUs are now SMP capable and most of the new ARM SoCs actually use multiple CPUs. Adding SMP support for an SoC means adding specific code very early during the boot process, but also using new APIs, filling the mandatory SMP operations and dealing with new kind of issues. This talk will cover all the aspects: we will see the mandatory parts to add and some parts that are nice to have. Then we will show how to implement them. And finally we will share our experience on the various issues we encountered through real examples.
Gregory Clement is an embedded Linux engineer and trainer at Free Electrons since 2010. He has 10 years of on the field experience in porting and operating embedded Linux on many hardware architectures. He is currently involved in the integration of Marvell Armada 370/XP SoC support in the mainline Linux kernel, acting as co-maintainer for the mvebu ARM sub-architecture (which includes the orion5x, mv78x00, kirkwood, dove and Armada 370/XP... Read More →