[Feature]Northpeak driver enabled on SKL Intel® Trace Hub

[XiongZhang]

The North Peak hardware is a set of functional blocks whose primary purpose is to enable external customers, as well as internal validation teams, to debug Intel Architecture (IA) based systems using off-the-shelf third-party debug tools in addition to internal tools. This is an important distinction; North Peak is not merely intended for hardware debug or software debug, but full system debug. This includes debugging hardware and software as they interact and produce complex system behavior. Because North Peak is intended to be utilized by third-party debug tools, it is the first architecture that aligns Intel products with industry standard debug methods and tools, with the express purpose of enabling third-party vendors to develop debug tools and support for IA products.
the released document: https://software.intel.com/en-us/intel-platform-analysis-library

Schedule:
kernel: 4.4

[XiongZhang (xiong-y-zhang)]

Code has been submitted to LKML:
https://lkml.org/lkml/2015/3/7/98

[Leann Ogasawara (leannogasawara)]

Shall we retarget this to the 16.04 release?

[Keve Gabbert (keve-a-gabbert)]

yes, development is targeting 4.4 kernel.

[XiongZhang (xiong-y-zhang)]

Implemented in 4.4 kernel
73061da intel_th: Check for NULL instead of ERR_PTR
ed39268 intel_th: Fix integer mismatch warnings
14cdbf0 intel_th: Add PTI output driver
ba82664 intel_th: Add Memory Storage Unit driver
f04e449 intel_th: Add Software Trace Hub driver
b27a6a3 intel_th: Add Global Trace Hub driver
2b0b16d intel_th: Add pci glue layer for Intel(R) Trace Hub
39f4034 intel_th: Add driver infrastructure for Intel(R) Trace Hub devices
1c09057 stm class: Select configfs
0df771d stm class: Mark src::link __rcu
e3e5a3d stm class: stm_console: Add kernel-console-over-stm driver
2c41538 stm class: dummy_stm: Add dummy driver for testing stm class
7bd1d40 stm class: Introduce an abstraction for System Trace Module devices"