netdev - Re: [PATCH RFC 0/6] r8169: disable ASPM during NAPI poll

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Date:   Wed, 1 Mar 2023 14:50:43 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     Heiner Kallweit <hkallweit1@...il.com>
Cc:     Paolo Abeni <pabeni@...hat.com>, Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Realtek linux nic maintainers <nic_swsd@...ltek.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH RFC 0/6] r8169: disable ASPM during NAPI poll

On Sun, Feb 26, 2023 at 5:43 AM Heiner Kallweit <hkallweit1@...il.com> wrote:
>
> This is a rework of ideas from Kai-Heng on how to avoid the known
> ASPM issues whilst still allowing for a maximum of ASPM-related power
> savings. As a prerequisite some locking is added first.
>
> This change affects a bigger number of supported chip versions,
> therefore this series comes as RFC first for further testing.

Thanks for the series.

Tested-by: Kai-Heng Feng <kai.heng.feng@...onical.com>

>
> Heiner Kallweit (6):
>   r8169: use spinlock to protect mac ocp register access
>   r8169: use spinlock to protect access to registers Config2 and Config5
>   r8169: enable cfg9346 config register access in atomic context
>   r8169: prepare rtl_hw_aspm_clkreq_enable for usage in atomic context
>   r8169: disable ASPM during NAPI poll
>   r8169: remove ASPM restrictions now that ASPM is disabled during NAPI
>     poll
>
>  drivers/net/ethernet/realtek/r8169_main.c | 145 +++++++++++++++-------
>  1 file changed, 100 insertions(+), 45 deletions(-)
>
> --
> 2.39.2
>