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

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Message-ID: <87y2ws3lvh.fsf@kamboji.qca.qualcomm.com>
Date:   Wed, 06 Nov 2019 20:22:58 +0200
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Ikjoon Jang <ikjn@...omium.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.

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

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