[Bug 97017] [SKL GT3e guc bisected] ~10% performance drop in most benchmarks

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97017

Sagar Kamble <sagar.a.kamble at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEEDINFO                    |RESOLVED

--- Comment #33 from Sagar Kamble <sagar.a.kamble at intel.com> ---
Although the fix from GuC perspective is not merged, other patch that is making
Host RPS handle erroneous adjustment properly is merged from
https://patchwork.freedesktop.org/series/18252/.

Specifically following patch is helping resolve the issue that is merged in
drm-tip:
7e79a68 drm/i915: Set adjustment to zero on Up/Down interrupts if freq is
already max/min

With current available GuC firmware 6.1 for SKL I could verify this fix for
workloads. Scores for 3 runs:

default:
glb_egypt_fixedtime = 129.0 <= 130.0 <= 131.0
gfxbench3_alu_offscreen = 287.9 <= 288.0 <= 288.1

with guc enabled
glb_egypt_fixedtime = 130.0 <= 130.0 <= 130.0
gfxbench3_alu_offscreen = 287.9 <= 288.2 <= 289.5

with fix reverted
glb_egypt_fixedtime = 119.0 <= 119.0 <= 120.0
gfxbench3_alu_offscreen = 254.5 <= 254.5 <= 254.5

If this bug is not gated by GuC submission enabling we can close this.
Hence I am marking this as resolved. Kindly correct if this needs to changed.

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