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From: Greg KH <gregkh@linuxfoundation.org>
To: Kalyan Thota <kalyan_t@codeaurora.org>
Cc: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org,
	freedreno@lists.freedesktop.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, robdclark@gmail.com,
	dianders@chromium.org, mkrishn@codeaurora.org,
	saiprakash.ranjan@codeaurora.org, rnayak@codeaurora.org,
	stable@vger.kernel.org
Subject: Re: [v3] drm/msm/disp/dpu1: add safe lut config in dpu driver
Date: Wed, 4 Aug 2021 11:10:06 +0200	[thread overview]
Message-ID: <YQpZbosqlBo9EkG6@kroah.com> (raw)
In-Reply-To: <1628064990-6990-1-git-send-email-kalyan_t@codeaurora.org>

On Wed, Aug 04, 2021 at 01:16:30AM -0700, Kalyan Thota wrote:
> Add safe lut configuration for all the targets in dpu
> driver as per QOS recommendation.
> 
> Issue reported on SC7280:
> 
> With wait-for-safe feature in smmu enabled, RT client
> buffer levels are checked to be safe before smmu invalidation.
> Since display was always set to unsafe it was delaying the
> invalidaiton process thus impacting the performance on NRT clients
> such as eMMC and NVMe.
> 
> Validated this change on SC7280, With this change eMMC performance
> has improved significantly.
> 
> Changes in v1:
> - Add fixes tag (Sai)
> - CC stable kernel (Dimtry)
> 
> Changes in v2:
> - Correct fixes tag with appropriate hash (stephen)
> 
> Fixes: 591e34a091d1 (drm/msm/disp/dpu1: add support for display
> for SC7280 target)
> Signed-off-by: Kalyan Thota <kalyan_t@codeaurora.org>
> Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> (sc7280, sc7180)
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 5 +++++
>  1 file changed, 5 insertions(+)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>

      reply	other threads:[~2021-08-04  9:10 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-04  8:16 Kalyan Thota
2021-08-04  9:10 ` Greg KH [this message]

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