AMDGPU Has More WattMan Improvements & Power Profiling For Linux 4.17
Written by Michael Larabel in Radeon on 8 March 2018 at 05:26 AM EST. 5 Comments
More new material has been submitted to DRM-Next for AMDGPU feature improvements in Linux 4.17.

At the end of February was the first batch of AMDGPU updates for Linux 4.17 that included initial WattMan support, gamma / color management work for DC, various other AMDGPU DC display improvements, and other alterations.

Yesterday Alex Deucher sent in the second batch of feature updates to DRM-Next that is primarily centered on more AMDGPU enhancements. This latest batch includes more work around the WattMan-like functionality for fine-granted clock and voltage controls as well as more power profile infrastructure for context-based dynamic power management.

This batch also includes fixes for SR-IOV support, an iomem debugging interface for use with the UMR debugger, PowerPlay clean-ups, more DC display code fixes, TTM memory management improvements, and other code clean-ups and improvements.

The complete list of changes for this second feature pull for AMDGPU/Radeon Linux 4.17 can be found on amd-gfx. We'll see if a third feature pull makes it in time for Linux 4.17 prior to the DRM-Next feature cut-off this month.

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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