linux-kernel - Re: [PATCH] ath10k: disable cpuidle during downloading firmware.

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Date:   Thu, 7 Nov 2019 12:16:45 +0800
From:   Ikjoon Jang <ikjn@...omium.org>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     ath10k@...ts.infradead.org, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        "David S . Miller" <davem@...emloft.net>
Subject: Re: [PATCH] ath10k: disable cpuidle during downloading firmware.

On Thu, Nov 7, 2019 at 2:23 AM Kalle Valo <kvalo@...eaurora.org> wrote:
>
> Ikjoon Jang <ikjn@...omium.org> writes:
>
> > Downloading ath10k firmware needs a large number of IOs and
> > cpuidle's miss predictions make it worse. In the worst case,
> > resume time can be three times longer than the average on sdio.
> >
> > This patch disables cpuidle during firmware downloading by
> > applying PM_QOS_CPU_DMA_LATENCY in ath10k_download_fw().
> >
> > Signed-off-by: Ikjoon Jang <ikjn@...omium.org>
>
> On what hardware and firmware versions did you test this? I'll add that
> to the commit log.
>
> https://wireless.wiki.kernel.org/en/users/drivers/ath10k/submittingpatches#guidelines

Thank you for sharing it.
It's QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00029
on ARMv8 multi cluster platform.

>
> --
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches