Re: [PATCH] drm/i915: Park faster to alleviate kept forcewake

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Quoting Mika Kuoppala (2020-01-29 13:39:12)
> To avoid context corruption on some gens, we need to hold forcewake
> for long periods of time. This leads to increased energy expenditure
> for mostly idle workloads.
> 
> To combat the increased power consumption, park GPU more hastily.
> 
> As the HW isn't so quick to end up in rc6, this software mechanism
> supplements it. So we can apply it, across all gens.
> 
> Suggested-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Testcase: igt/i915_pm_rc6_residency/rc6-idle
> References: "Add RC6 CTX corruption WA"
> Cc: Stable <stable@xxxxxxxxxxxxxxx>    # v4.19+
> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>

Seems to work and play nice with the older style of locking,
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
-Chris



[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux