[PATCH] drm/amd/pm: Activate a more aggressive DPM policy while there's heavy load.

[Ernst Sjöstrand]

Is this really a patch for kernel.org? Seems like a hack for Stadia or
something. (And the patch description is not very good...)

This should really be made into a generic solution.

Regards
//Ernst

Den tis 27 okt. 2020 kl 07:38 skrev Li, Xin (Justin) <Xin2.Li at amd.com>:

> [AMD Official Use Only - Internal Distribution Only]
>
> Fix performace drop while streaming Doom
>
> Signed-off-by: Li, Xin (Justin) <Xin2.Li at amd.com>
> Signed-off-by: Zhao, Jiange <Jiange.Zhao at amd.com>
> ---
>  drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
> b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
> index eab9768029c1..5287ac4e8364 100644
> --- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
> +++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
> @@ -125,6 +125,20 @@ static int pp_hw_init(void *handle)
>
>          ret = hwmgr_hw_init(hwmgr);
>
> +       if (adev->pdev->device == 0x6860 && adev->pdev->revision == 0x07) {
> +               long param[5];
> +
> +               param[0] = 5;  // busy_set_point
> +               param[1] = 60; // FPS
> +               param[2] = 0;  // use_rlc_busy
> +               param[3] = 3;  // min_active_level
> +               param[4] = PP_SMC_POWER_PROFILE_CUSTOM;
> +
> +               mutex_lock(&hwmgr->smu_lock);
> +               ret = hwmgr->hwmgr_func->set_power_profile_mode(hwmgr,
> param, 4);
> +               mutex_unlock(&hwmgr->smu_lock);
> +       }
> +
>          if (ret)
>                  pr_err("powerplay hw init failed\n");
>
> --
> 2.24.3 (Apple Git-128)
>
>
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